Alert archive / Colorado / Winter Storm Warnings in 2019

Winter Storm Warning 8, NWS Denver/Boulder, CO

March 12, 201912 counties in Colorado

NWS Denver/Boulder, CO issued this winter storm warning at Mar 12, 2019, 10:55 AM MDT for 12 counties in Colorado. It took effect at Mar 12, 2019, 6:00 PM MDT. It was in force for 27 hr. 60 reports came from inside the area while it was in force.

The area

The counties it named, with what was reported inside it.

The facts

Issued
Mar 12, 2019, 10:55 AM MDT (16:55 UTC)
In effect from
Mar 12, 2019, 6:00 PM MDT
Expired
Mar 13, 2019, 8:40 PM MDT
In force
27 hr
Issued by
NWS Denver/Boulder, CO

Counties Boulder County, CO, Broomfield County, CO, Clear Creek County, CO, Douglas County, CO, Gilpin County, CO, Grand County, CO, Jackson County, CO, Jefferson County, CO, Larimer County, CO, Park County, CO, Summit County, CO, Weld County, CO

The radar

The Denver radar (KFTG), 82 km from the middle of the area, began a volume at 16:58 UTC, the scan nearest the moment this went out.

Open the radar archive at this moment

The archived warnings, watches and discussions in force at that minute are drawn over the scan, this one among them.

What was reported inside it

TimeReportWhereRemark
Mar 12, 9:00 PM MDTSNOW 5.22 Se Breckenridge, COCORRECTS PREVIOUS SNOW REPORT FROM 2 SE BRECKENRIDGE.
Mar 13, 12:06 AM MDTSNOW 3.32 E Sunshine, CO
Mar 13, 12:11 AM MDTSNOW 7.12 Se Breckenridge, CO
Mar 13, 12:14 AM MDTSNOW 7.52 E Estes Park, CO
Mar 13, 12:17 AM MDTSNOW 12.54 Ne Nederland, CO
Mar 13, 12:37 AM MDTSNOW 12.81 N Genesee, CO
Mar 13, 12:44 AM MDTSNOW 4.13 S Castle Pines, CO
Mar 13, 8:00 AM MDTSNOW 4.73 W Jamestown, CO
Mar 13, 8:08 AM MDTSNOW 5.22 Se Breckenridge, CO
Mar 13, 8:22 AM MDTSNOW 34 S Brookvale, CO
Mar 13, 8:30 AM MDTSNOW 53 Sw Fairplay, COCOCORAHS STATION CO-PK-78, 2 WSW FAIRPLAY.
Mar 13, 8:34 AM MDTSNOW 3.52 E Estes Park, CO
Mar 13, 8:35 AM MDTSNOW 3.81 N Genesee, CO
Mar 13, 8:58 AM MDTSNOW 54 Ne Nederland, CO
Mar 13, 9:00 AM MDTSNOW 5.55 W Aspen Park, COCOCORAHS STATION CO-JF-386, CONIFER 5.2 WNW.
Mar 13, 9:34 AM MDTSNOW 53 N Shaffers Crossing, CO
Mar 13, 9:48 AM MDTSNOW 64 Se Pinecliffe, CO
Mar 13, 10:10 AM MDTSNOW 62 E Estes Park, CO
Mar 13, 10:30 AM MDTSNOW 9.63 W Jamestown, CO
Mar 13, 10:31 AM MDTSNOW 71 S Crescent Village, CO
Mar 13, 10:35 AM MDTSNOW 6.81 N Genesee, CO
Mar 13, 10:38 AM MDTSNOW 83 Ne Aspen Springs, CO
Mar 13, 10:52 AM MDTSNOW 9.24 Se Pinecliffe, CO
Mar 13, 11:00 AM MDTSNOW 74 S Long'S Peak, COMESONET STATION WLBC2, 3 S LONG'S PEAK.
Mar 13, 11:01 AM MDTSNOW 1.62 E Sunshine, CO
Mar 13, 11:20 AM MDTSNOW 2.63 S Castle Pines, CO
Mar 13, 11:27 AM MDTSNOW 103 N Shaffers Crossing, CO
Mar 13, 11:30 AM MDTSNOW 7Estes Park, CO
Mar 13, 11:37 AM MDTSNOW 9.31 N Genesee, CO
Mar 13, 11:41 AM MDTSNOW 1.52 N Longmont, CO
Mar 13, 11:42 AM MDTSNOW 6.51 Ne Brookvale, CO
Mar 13, 12:00 PM MDTSNOW 22 W Longmont, CO
Mar 13, 12:00 PM MDTSNOW 4.5Arvada 5.2 Wnw, CO4.5 INCHES IN THE PAST 2 HOURS.
Mar 13, 12:06 PM MDTSNOW 3.32 E Sunshine, CO
Mar 13, 12:11 PM MDTSNOW 1.92 Se Breckenridge, CO1.9 INCHES SINCE 8 AM MARCH 13,2019.
Mar 13, 12:14 PM MDTSNOW 7.52 E Estes Park, CO
Mar 13, 12:14 PM MDTSNOW 10.71 W Aspen Springs, CO
Mar 13, 12:18 PM MDTSNOW 7.41 Ne Evergreen, CO
Mar 13, 12:19 PM MDTSNOW 11.72 N Aspen Park, CO
Mar 13, 12:21 PM MDTSNOW 13.53 W Jamestown, CO
Mar 13, 12:30 PM MDTSNOW 21 W Wheat Ridge, COBLOWING AND DRIFTING SNOW. PEAK WIND GUST - N37MPH SO FAR.
Mar 13, 12:37 PM MDTSNOW 12.81 N Genesee, CO
Mar 13, 12:42 PM MDTSNOW 81.8 N Evergreen, CO
Mar 13, 12:44 PM MDTSNOW 4.13 S Castle Pines, CO
Mar 13, 12:52 PM MDTSNOW 31 Nw Broomfield, CO
Mar 13, 12:57 PM MDTSNOW 141 S Crescent Village, CO
Mar 13, 1:00 PM MDTSNOW 16.53 W Jamestown, CO
Mar 13, 1:02 PM MDTSNOW 63 Ne Castle Rock, CO
Mar 13, 1:08 PM MDTSNOW 31 Ne Parker, COCORRECTS PREVIOUS SNOW REPORT FROM 1 NE PARKER. SUSTAINED WIND OF 30+ MPH WITH GUSTS OVER 50+, 3 INCHES OF SNOW WITH DRIFTS OF 12+ IN.
Mar 13, 1:08 PM MDTSNOW 31 Ne Parker, COSUSTAINED WIND OF 30+ MPH WITH GUSTS OVER 50+, 3 INCHES OF SNOW WITH DRIFTS OF 12+ IN.
Mar 13, 1:46 PM MDTSNOW 17.54 Ne Nederland, CO
Mar 13, 2:00 PM MDTSNOW 3.2Fort Collins, CO
Mar 13, 2:04 PM MDTSNOW 32 N Longmont, COTOUGH MEASUREMENT; AVERAGED 1.5 INCHES IN LOWEST AREAS WITH 4.5 INCHES IN HIGHEST FOR 3.0 INCH REPORT.
Mar 13, 2:08 PM MDTSNOW 173 N Shaffers Crossing, CO
Mar 13, 2:15 PM MDTSNOW 2.21 Nw Niwot, CO
Mar 13, 2:19 PM MDTSNOW 14.91 W Aspen Springs, CO
Mar 13, 2:21 PM MDTSNOW 6.33 S Castle Pines, CO
Mar 13, 2:22 PM MDTSNOW 41 S Lafayette, CO
Mar 13, 2:22 PM MDTSNOW 154 S Brookvale, CO
Mar 13, 2:23 PM MDTSNOW 32 S Erie, CODRIFTING SNOW MAKING IT HARD TO MEASURE.

Local storm reports filed while the alert was in force, from inside its polygon or its counties.

The nearest sounding before it

Denver, CO (KDEN), launched 12:00Z, 4.9 hours before the alert went out and 193 km from the middle of its area. This is the routine balloon launch nearest before it, the air the forecaster had in hand, not a measurement taken for the alert.

Skew-T log-pSkew-T log-p diagram, Denver, CO at 12:00Z on 2019-03-12Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 joules per kilogram.LCL10008507005003002001001 km2 km3 km6 km9 km12 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Denver, CO at 12:00Z on 2019-03-12The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 86 square meters per square second.1939587897Sfc1 km3 km6 km9 kmRMLM
The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.
Mixed-layer CAPE
0 J/kg
Mixed-layer CIN
No buoyant parcel
Mixed-layer LCL
1783 m above ground
0-6 km bulk shear
45 kt
0-1 km storm-relative helicity
86 m²/s²
0-3 km storm-relative helicity
89 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted.

198 
WWUS45 KBOU 121655 CCA
WSWBOU

URGENT - WINTER WEATHER MESSAGE...CORRECTED
National Weather Service Denver CO
1055 AM MDT Tue Mar 12 2019

...Blizzard expected to develop over portions of northeast
Colorado Wednesday afternoon and Wednesday night...

.Heavy snow and very strong winds will develop over most of
northeast Colorado Wednesday afternoon and Wednesday night.
Blizzard conditions are likely to develop along and east of the 
I- 25 Corridor where the heaviest snow is expected to fall. Power 
outages and wind damage will also be possible as winds gust to 
between 60 and 70 mph will be possible.

West of the I-25 Urban Corridor, heavy snow and gusty winds will 
also be possible, with significant travel impacts. Rain is 
expected to develop Tuesday night, and then change to snow late 
Wednesday morning and may become heavy at times with wind gusts
from 40 to 60 mph.

Mountain areas will also see more accumulating snowfall during
this period.

COZ033-034-130045-
/O.UPG.KBOU.WS.A.0006.190313T1200Z-190314T0600Z/
/O.NEW.KBOU.WS.W.0008.190313T0000Z-190314T1800Z/
Rocky Mountain National Park and the Medicine Bow Range-
The Mountains of Summit County, the Mosquito Range, and the
Indian Peaks-
Including the cities of Cameron Pass, 
Laramie and Medicine Bow Mountains, Rabbit Ears Range, 
Rocky Mountain National Park, Willow Creek Pass, Berthoud Pass, 
Breckenridge, East Slopes Mosquito Range, 
East Slopes Southern Gore Range, Eisenhower Tunnel, Indian Peaks,
Kenosha Mountains, Mount Evans, Williams Fork Mountains, 
and Winter Park
1055 AM MDT Tue Mar 12 2019

...WINTER STORM WARNING IN EFFECT FROM 6 PM THIS EVENING TO NOON
MDT THURSDAY...

* WHAT...Heavy snow expected. Total snow accumulations of 11 to 
  20 inches expected. Winds gusting as high as 45 mph.

* WHERE...Rocky Mountain National Park and the Medicine Bow 
  Range and The Mountains of Summit County, the Mosquito Range, 
  and the Indian Peaks.

* WHEN...From 6 PM this evening to noon MDT Thursday.

* ADDITIONAL DETAILS...Travel could be very difficult to 
  impossible. Patchy blowing snow could significantly reduce 
  visibility. The hazardous conditions could impact the morning 
  or evening commute. Gusty winds could bring down tree 
  branches. The cold wind chills as low as 20 below zero could 
  cause frostbite on exposed skin in as little as 30 minutes.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Winter Storm Warning for snow means severe winter weather
conditions will make travel very hazardous or impossible. If you
must travel, keep an extra flashlight, food and water in your
vehicle in case of an emergency. 

The latest road conditions for the state you are calling from can
be obtained by calling 5 1 1.

&&

$$

COZ035-130045-
/O.UPG.KBOU.WS.A.0006.190313T1200Z-190314T0600Z/
/O.NEW.KBOU.WS.W.0008.190313T0300Z-190314T1200Z/
The Northern Front Range Foothills-
Including the cities of Estes Park, Glendevey, Nederland, 
and Red Feather Lakes
1055 AM MDT Tue Mar 12 2019

...WINTER STORM WARNING IN EFFECT FROM 9 PM THIS EVENING TO 6 AM
MDT THURSDAY...

* WHAT...Heavy snow expected. Total snow accumulations of 8 to 
  16 inches expected. Winds gusting as high as 65 mph.

* WHERE...The Northern Front Range Foothills.

* WHEN...From 9 PM this evening to 6 AM MDT Thursday.

* ADDITIONAL DETAILS...Travel could be very difficult. Areas of 
  blowing snow could significantly reduce visibility. The 
  hazardous conditions could impact the morning or evening 
  commute. Very strong winds could cause extensive tree damage.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Winter Storm Warning for snow means severe winter weather
conditions will make travel very hazardous or impossible. If you
must travel, keep an extra flashlight, food and water in your
vehicle in case of an emergency. 

The latest road conditions for the state you are calling from can
be obtained by calling 5 1 1.

&&

$$

COZ036-038-039-130045-
/O.UPG.KBOU.WS.A.0006.190313T1800Z-190314T0600Z/
/O.NEW.KBOU.WS.W.0008.190313T1600Z-190314T0600Z/
The Southern Front Range Foothills-Fort Collins-
Boulder and the western suburbs of Denver-
Including the cities of Bailey, Central City, Evergreen, 
Georgetown, Idaho Springs, Westcreek, Fort Collins, Hereford, 
Loveland, Nunn, Arvada, Boulder, Golden, Lakewood, and Longmont
1055 AM MDT Tue Mar 12 2019

...WINTER STORM WARNING IN EFFECT FROM 10 AM WEDNESDAY TO
MIDNIGHT MDT WEDNESDAY NIGHT...

* WHAT...Heavy snow and blowing snow expected. Total snow 
  accumulations of 3 to 7 inches expected. Winds gusting as high 
  as 60 mph.

* WHERE...The Southern Front Range Foothills, Fort Collins and 
  Boulder and the western suburbs of Denver.

* WHEN...From 10 AM Wednesday to midnight MDT Wednesday night.

* ADDITIONAL DETAILS...Plan on slippery road conditions. Patchy 
  blowing snow could significantly reduce visibility. The 
  hazardous conditions could impact the evening commute. Very 
  strong winds could cause extensive tree damage.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Winter Storm Warning for snow means severe winter weather
conditions will make travel very hazardous or impossible. If you
must travel, keep an extra flashlight, food and water in your
vehicle in case of an emergency. 

The latest road conditions for the state you are calling from can
be obtained by calling 5 1 1.

&&

$$

COZ040-043-130045-
/O.UPG.KBOU.WS.A.0006.190313T1800Z-190314T0600Z/
/O.EXB.KBOU.BZ.W.0003.190313T1600Z-190314T0600Z/
Denver-Greeley-
Including the cities of Aurora, Brighton, City of Denver, 
Denver International Airport, Highlands Ranch, Littleton, Parker,
Eaton, Fort Lupton, Greeley, and Roggen
1055 AM MDT Tue Mar 12 2019

...BLIZZARD WARNING IN EFFECT FROM 10 AM WEDNESDAY TO MIDNIGHT
MDT WEDNESDAY NIGHT...

* WHAT...Blizzard conditions expected. Total snow accumulations of
  5 to 8 inches expected. Winds gusting as high as 60 mph.

* WHERE...Denver and Greeley.

* WHEN...From 10 AM Wednesday to midnight MDT Wednesday night.

* ADDITIONAL DETAILS...Plan on slippery road conditions. Areas of
  blowing snow will reduce visibility to near zero at times. The 
  hazardous conditions will impact the evening commute. Very 
  strong winds could cause extensive tree damage.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Blizzard Warning means severe winter weather conditions are
expected or occurring. Falling and blowing snow with strong winds
and poor visibilities are likely. This will lead to whiteout
conditions, making travel extremely dangerous. Do not travel. If
you must travel, have a winter survival kit with you. If you get
stranded, stay with your vehicle. 

The latest road conditions for the state you are calling from can
be obtained by calling 5 1 1.

&&

$$

COZ042-044>046-048>051-130045-
/O.EXT.KBOU.BZ.W.0003.190313T1800Z-190314T1800Z/
Briggsdale-Fort Morgan-Byers-Limon-Sterling-Akron-Julesburg-
Holyoke-
Including the cities of Briggsdale, Grover, Pawnee Buttes, 
Raymer, Stoneham, Brush, Fort Morgan, Goodrich, Wiggins, Bennett,
Byers, Deer Trail, Leader, Agate, Hugo, Limon, Matheson, Crook, 
Merino, Sterling, Peetz, Akron, Cope, Last Chance, Otis, 
Julesburg, Ovid, Sedgwick, Amherst, Haxtun, and Holyoke
1055 AM MDT Tue Mar 12 2019

...BLIZZARD WARNING NOW IN EFFECT FROM NOON WEDNESDAY TO NOON MDT
THURSDAY...

* WHAT...Blizzard conditions expected. Total snow accumulations 
  of 6 to 12 inches expected. Winds gusting as high as 75 mph.

* WHERE...Portions of east central and northeast Colorado.

* WHEN...From noon Wednesday to noon MDT Thursday.

* ADDITIONAL DETAILS...Travel will be very difficult. Widespread 
  blowing snow will reduce visibility to near zero at times. The 
  hazardous conditions will impact the evening commute. Very 
  strong winds could cause extensive tree damage.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Blizzard Warning means severe winter weather conditions are
expected or occurring. Falling and blowing snow with strong winds
and poor visibilities are likely. This will lead to whiteout
conditions, making travel extremely dangerous. Do not travel. If
you must travel, have a winter survival kit with you. If you get
stranded, stay with your vehicle.

The latest road conditions for the state you are calling from can
be obtained by calling 5 1 1.

&&

$$

COZ041-130045-
/O.EXT.KBOU.BZ.W.0003.190313T1600Z-190314T0600Z/
Castle Rock-
Including the cities of Castle Rock, Elbert, Fondis, Kiowa, 
and Larkspur
1055 AM MDT Tue Mar 12 2019

...BLIZZARD WARNING NOW IN EFFECT FROM 10 AM WEDNESDAY TO
MIDNIGHT MDT WEDNESDAY NIGHT...

* WHAT...Blizzard conditions expected. Total snow accumulations of
  6 to 12 inches expected. Winds gusting as high as 70 mph.

* WHERE...Portions of east central and northeast Colorado.

* WHEN...From 10 AM Wednesday to midnight MDT Wednesday night.

* ADDITIONAL DETAILS...Travel will be very difficult. Widespread 
  blowing snow will reduce visibility to near zero at times. The 
  hazardous conditions will impact the evening commute. Very 
  strong winds could cause extensive tree damage.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Blizzard Warning means severe winter weather conditions are
expected or occurring. Falling and blowing snow with strong winds
and poor visibilities are likely. This will lead to whiteout
conditions, making travel extremely dangerous. Do not travel. If
you must travel, have a winter survival kit with you. If you get
stranded, stay with your vehicle.

The latest road conditions for the state you are calling from can
be obtained by calling 5 1 1.

&&

$$
6 follow-up statements
035 
WWUS45 KBOU 130249
WSWBOU

URGENT - WINTER WEATHER MESSAGE
National Weather Service Denver CO
849 PM MDT Tue Mar 12 2019

...POTENT WINTER STORM CONTINUING TO ORGANIZE AND TAKING AIM AT 
EASTERN COLORADO...

.Satellite imagery and the latest computer forecast models
continue showing a very strong storm system developing over
Colorado in the next 24 hours. Scattered showers and a few
embedded thunderstorms have been moving over northeastern Colorado
this evening and snow shower activity has been on the increase
over the mountains. By Wednesday morning, a rapidly deepening low
pressure area is forecast to be located over southeast Colorado.
Rain is expected to be falling across the northeast plains by
sunrise. A cold front will move over the northeast plains between
8 AM and noon, changing precipitation over to snow and drastically increasing
the winds as cold air moves in from the north. Blizzard conditions
are expected to spread across northeast Colorado through the
afternoon as snow intensities increase and strong winds produce 
poor visibilities in blowing and drifting snow. The most hazardous
conditions will be from the I-25 corridor eastward. Blizzard
conditions are expected to persist overnight. 

West of the I-25 Urban Corridor, winds will be a little less than
out on the plains, but moderate to heavy snow will combine with
the winds to produce significant travel impacts during the
afternoon and evening. 

Mountain areas will also see more accumulating snowfall overnight
and Wednesday.

COZ042-044>046-048>051-131300-
/O.CON.KBOU.BZ.W.0003.190313T1800Z-190314T1800Z/
Briggsdale-Fort Morgan-Byers-Limon-Sterling-Akron-Julesburg-
Holyoke-
Including the cities of Briggsdale, Grover, Pawnee Buttes, 
Raymer, Stoneham, Brush, Fort Morgan, Goodrich, Wiggins, Bennett,
Byers, Deer Trail, Leader, Agate, Hugo, Limon, Matheson, Crook, 
Merino, Sterling, Peetz, Akron, Cope, Last Chance, Otis, 
Julesburg, Ovid, Sedgwick, Amherst, Haxtun, and Holyoke
849 PM MDT Tue Mar 12 2019

...BLIZZARD WARNING REMAINS IN EFFECT FROM NOON WEDNESDAY TO NOON
MDT THURSDAY...

* WHAT...Blizzard conditions expected. Total snow accumulations of
  6 to 12 inches expected. North winds gusting as high as 75 mph.

* WHERE...Most of east central and northeast Colorado.

* WHEN...From noon Wednesday to noon MDT Thursday.

* ADDITIONAL DETAILS...Travel could be very difficult Wednesday
  afternoon and Wednesday night. Widespread blowing snow will
  significantly reduce visibility. The hazardous conditions could
  impact Wednesday evening's commute and the Thursday morning
  drive time. Very strong winds could cause extensive tree damage,
  scattered power outages and road closures.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Blizzard Warning means severe winter weather conditions are
expected or occurring. Falling and blowing snow with strong winds
and poor visibilities are likely. This will lead to whiteout
conditions, making travel extremely dangerous. Do not travel. If
you must travel, have a winter survival kit with you. If you get
stranded, stay with your vehicle. 

The latest road conditions for the state you are calling from can
be obtained by calling 5 1 1.

&&

$$

COZ040-041-043-131300-
/O.CON.KBOU.BZ.W.0003.190313T1600Z-190314T0600Z/
Denver-Castle Rock-Greeley-
Including the cities of Aurora, Brighton, City of Denver, 
Denver International Airport, Highlands Ranch, Littleton, Parker,
Castle Rock, Elbert, Fondis, Kiowa, Larkspur, Eaton, Fort Lupton,
Greeley, and Roggen
849 PM MDT Tue Mar 12 2019

...BLIZZARD WARNING REMAINS IN EFFECT FROM 10 AM WEDNESDAY TO
MIDNIGHT MDT WEDNESDAY NIGHT...

* WHAT...Blizzard conditions expected. Total snow accumulations of
  5 to 8 inches expected with up to 12 inches on the Palmer
  Divide. North winds gusting as high as 70 mph.

* WHERE...The Front Range Urban Corridor from Greeley to Denver
  and Castle Rock.

* WHEN...From 10 AM Wednesday to midnight MDT Wednesday night.

* ADDITIONAL DETAILS...Travel could be very difficult. Widespread
  blowing snow could significantly reduce visibility. The
  hazardous conditions could impact Wednesday evening's commute.
  Very strong winds could cause extensive tree damage, scattered
  power outages and road closures.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Blizzard Warning means severe winter weather conditions are
expected or occurring. Falling and blowing snow with strong winds
and poor visibilities are likely. This will lead to whiteout
conditions, making travel extremely dangerous. Do not travel. If
you must travel, have a winter survival kit with you. If you get
stranded, stay with your vehicle. 

The latest road conditions for the state you are calling from can
be obtained by calling 5 1 1.

&&

$$

COZ033-034-131300-
/O.CON.KBOU.WS.W.0008.000000T0000Z-190314T1800Z/
Rocky Mountain National Park and the Medicine Bow Range-
The Mountains of Summit County, the Mosquito Range, and the
Indian Peaks-
Including the cities of Cameron Pass, 
Laramie and Medicine Bow Mountains, Rabbit Ears Range, 
Rocky Mountain National Park, Willow Creek Pass, Berthoud Pass, 
Breckenridge, East Slopes Mosquito Range, 
East Slopes Southern Gore Range, Eisenhower Tunnel, Indian Peaks,
Kenosha Mountains, Mount Evans, Williams Fork Mountains, 
and Winter Park
849 PM MDT Tue Mar 12 2019

...WINTER STORM WARNING REMAINS IN EFFECT UNTIL NOON MDT
THURSDAY...

* WHAT...Heavy snow. Additional snow accumulations of 10 to 18 
  inches. Winds gusting as high as 45 mph.

* WHERE...The Mountains of Summit County, the Mosquito Range, 
  and the Indian Peaks and Rocky Mountain National Park and the 
  Medicine Bow Range.

* WHEN...Until noon MDT Thursday.

* ADDITIONAL DETAILS...Travel could be very difficult to 
  impossible. Patchy blowing snow could significantly reduce 
  visibility. The hazardous conditions could impact the morning 
  or evening commute. Gusty winds could bring down tree 
  branches. The cold wind chills as low as 25 below zero could 
  cause frostbite on exposed skin in as little as 30 minutes.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Winter Storm Warning for snow means severe winter weather
conditions will make travel very hazardous or impossible. If you
must travel, keep an extra flashlight, food and water in your
vehicle in case of an emergency. 

The latest road conditions for the state you are calling from can
be obtained by calling 5 1 1.

&&

$$

COZ035-131300-
/O.CON.KBOU.WS.W.0008.190313T0300Z-190314T1200Z/
The Northern Front Range Foothills-
Including the cities of Estes Park, Glendevey, Nederland, 
and Red Feather Lakes
849 PM MDT Tue Mar 12 2019

...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 6 AM MDT
THURSDAY...

* WHAT...Heavy snow expected. Total snow accumulations of 8 to 16
  inches expected. North winds gusting as high as 65 mph.

* WHERE...The Northern Front Range Foothills.

* WHEN...Until 6 AM MDT Thursday.

* ADDITIONAL DETAILS...Travel could be very difficult. Areas of 
  blowing snow could significantly reduce visibility. The 
  hazardous conditions could impact the morning or evening 
  commute. Very strong winds could cause extensive tree damage.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Winter Storm Warning for snow means severe winter weather
conditions will make travel very hazardous or impossible. If you
must travel, keep an extra flashlight, food and water in your
vehicle in case of an emergency. 

The latest road conditions for the state you are calling from can
be obtained by calling 5 1 1.

&&

$$

COZ036-038-039-131300-
/O.CON.KBOU.WS.W.0008.190313T1600Z-190314T0600Z/
The Southern Front Range Foothills-Fort Collins-
Boulder and the western suburbs of Denver-
Including the cities of Bailey, Central City, Evergreen, 
Georgetown, Idaho Springs, Westcreek, Fort Collins, Hereford, 
Loveland, Nunn, Arvada, Boulder, Golden, Lakewood, and Longmont
849 PM MDT Tue Mar 12 2019

...WINTER STORM WARNING REMAINS IN EFFECT FROM 10 AM WEDNESDAY TO
MIDNIGHT MDT WEDNESDAY NIGHT...

* WHAT...Moderate to heavy snow expected. Total snow accumulations
  of 4 to 8 inches expected. North winds gusting as high as 75 
  mph.

* WHERE...The Southern Front Range Foothills, Boulder and the 
  western suburbs of Denver and Fort Collins.

* WHEN...From 10 AM Wednesday to midnight MDT Wednesday night.

* ADDITIONAL DETAILS...Travel could be very difficult. 
  Widespread blowing snow could significantly reduce visibility. 
  The hazardous conditions could impact the evening commute. 
  Very strong winds could cause extensive tree damage.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Winter Storm Warning for snow means severe winter weather
conditions will make travel very hazardous or impossible. If you
must travel, keep an extra flashlight, food and water in your
vehicle in case of an emergency. 

The latest road conditions for the state you are calling from can
be obtained by calling 5 1 1.

&&

$$
273 
WWUS45 KBOU 131031
WSWBOU

URGENT - WINTER WEATHER MESSAGE
National Weather Service Denver CO
431 AM MDT Wed Mar 13 2019

...INTENSE WINTER STORM DEVELOPING FOR THE MOUNTAINS AND EASTERN
COLORADO...

.A winter storm centered over southeastern Colorado will rapidly
intensify this morning. This will produce very strong winds and
areas of heavy snow. Rain will change to snow along the Front
Range this morning, with blizzard conditions developing quickly
in the late morning or early afternoon. These conditions will
spread eastward across the plains this afternoon. Near zero
visibilities are expected with wind gusts of up to 80 mph and up
to a foot of snow on the plains east of a line from Greeley to
Denver International Airport. In areas closer to the mountains,
there will be less snow, but a period of very heavy snow and
strong winds is likely during the day today that will likely
create near blizzard conditions for a while. Strong winds will
continue to create blizzard conditions on the plains overnight
tonight. Closer to the mountains, there will be some improvement
but still enough wind for some drifting snow and continued
difficult travel.

Much of the northern Colorado mountains will also see heavy snow
and windy conditions today, especially near the Wyoming border. 

Travelers across the Colorado mountains and eastern plains should
consider canceling travel plans today, as conditions will
deteriorate quickly during the late morning or early afternoon. Be
aware that if you go somewhere this morning, you could become 
stranded or have a very difficult time returning this afternoon.
Road closures can be expected, especially on the eastern plains
and near the Wyoming border, but possibly also along the I-25
corridor during the peak of the storm later today. Residents
should also be prepared for power outages from the very strong
winds.

COZ035-131900-
/O.UPG.KBOU.WS.W.0008.000000T0000Z-190314T1200Z/
/O.EXB.KBOU.BZ.W.0003.190313T1031Z-190314T1200Z/
The Northern Front Range Foothills-
Including the cities of Estes Park, Glendevey, Nederland, 
and Red Feather Lakes
431 AM MDT Wed Mar 13 2019

...BLIZZARD WARNING IN EFFECT UNTIL 6 AM MDT THURSDAY...

* WHAT...Blizzard conditions. Additional snow accumulations of 
  10 to 18 inches. Winds gusting as high as 65 mph.

* WHERE...The Northern Front Range Foothills.

* WHEN...The heaviest snow will be during the day today, with the
  strongest winds this afternoon and evening. Significant drifting
  snow may continue into Thursday.

* ADDITIONAL DETAILS...Travel will be very difficult to
  impossible. Areas of blowing snow could significantly reduce
  visibility. Very strong winds may cause tree damage and power
  outages.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Blizzard Warning means severe winter weather conditions are
expected or occurring. Falling and blowing snow with strong winds
and poor visibilities are likely. This will lead to whiteout
conditions, making travel extremely dangerous. Do not travel. If
you must travel, have a winter survival kit with you. If you get
stranded, stay with your vehicle. 

The latest road conditions for the state you are calling from can
be obtained by calling 5 1 1.

&&

$$

COZ033-131900-
/O.UPG.KBOU.WS.W.0008.000000T0000Z-190314T1800Z/
/O.EXB.KBOU.BZ.W.0003.190313T1031Z-190314T1200Z/
Rocky Mountain National Park and the Medicine Bow Range-
Including the cities of Cameron Pass, 
Laramie and Medicine Bow Mountains, Rabbit Ears Range, 
Rocky Mountain National Park, and Willow Creek Pass
431 AM MDT Wed Mar 13 2019

...BLIZZARD WARNING IN EFFECT UNTIL 6 AM MDT THURSDAY...

* WHAT...Blizzard conditions. Additional snow accumulations of 
  14 to 20 inches. Winds gusting as high as 70 mph.

* WHERE...Rocky Mountain National Park and the Medicine Bow 
  Range.

* WHEN...The heaviest snow will be during the day today, with the
  strongest winds this afternoon and evening.

* ADDITIONAL DETAILS...Travel will be very difficult to
  impossible. Blowing snow could significantly reduce
  visibility. Very strong winds could cause tree damage and power
  outages. The cold wind chills as low as 25 below zero could 
  cause frostbite on exposed skin in as little as 30 minutes.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Blizzard Warning means severe winter weather conditions are
expected or occurring. Falling and blowing snow with strong winds
and poor visibilities are likely. This will lead to whiteout
conditions, making travel extremely dangerous. Do not travel. If
you must travel, have a winter survival kit with you. If you get
stranded, stay with your vehicle. 

The latest road conditions for the state you are calling from can
be obtained by calling 5 1 1.

&&

$$

COZ038-131900-
/O.UPG.KBOU.WS.W.0008.190313T1600Z-190314T0600Z/
/O.EXA.KBOU.BZ.W.0003.190313T1600Z-190314T0600Z/
Fort Collins-
Including the cities of Fort Collins, Hereford, Loveland, 
and Nunn
431 AM MDT Wed Mar 13 2019

...BLIZZARD WARNING IN EFFECT FROM 10 AM THIS MORNING TO MIDNIGHT
MDT TONIGHT...

* WHAT...Blizzard conditions expected. Total snow accumulations of
  5 to 10 inches expected. Winds gusting as high as 75 mph.

* WHERE...Fort Collins.

* WHEN...The heaviest snow will be during the day today, with the
  strongest winds this afternoon and evening. Significant drifting
  snow may continue into Thursday.

* ADDITIONAL DETAILS...Travel will be very difficult or
  impossible. Widespread blowing snow could significantly reduce
  visibility. Very strong winds could cause tree damage and power
  outages.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Blizzard Warning means severe winter weather conditions are
expected or occurring. Falling and blowing snow with strong winds
and poor visibilities are likely. This will lead to whiteout
conditions, making travel extremely dangerous. Do not travel. If
you must travel, have a winter survival kit with you. If you get
stranded, stay with your vehicle. 

The latest road conditions for the state you are calling from can
be obtained by calling 5 1 1.

&&

$$

COZ031-131900-
/O.EXB.KBOU.BZ.W.0003.190313T1031Z-190314T1200Z/
Rabbit Ears Pass-
Including the cities of East Slopes Park and Northern Gore
Ranges, Gore Pass, and Rabbit Ears Pass
431 AM MDT Wed Mar 13 2019

...BLIZZARD WARNING IN EFFECT UNTIL 6 AM MDT THURSDAY...

* WHAT...Blizzard conditions. Additional snow accumulations of 
  10 to 15 inches. Winds gusting as high as 55 mph.

* WHERE...Rabbit Ears Pass.

* WHEN...The heaviest snow and strongest winds will be during the
  day today.

* ADDITIONAL DETAILS...Travel could be very difficult. Blowing
  snow could significantly reduce visibility. Strong winds could 
  cause tree damage. The cold wind chills as low as 20 below zero 
  could cause frostbite on exposed skin in as little as 30 
  minutes.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Blizzard Warning means severe winter weather conditions are
expected or occurring. Falling and blowing snow with strong winds
and poor visibilities are likely. This will lead to whiteout
conditions, making travel extremely dangerous. Do not travel. If
you must travel, have a winter survival kit with you. If you get
stranded, stay with your vehicle. 

The latest road conditions for the state you are calling from can
be obtained by calling 5 1 1.

&&

$$

COZ030-131900-
/O.EXB.KBOU.BZ.W.0003.190313T1031Z-190314T0600Z/
North Park-
Including the cities of Gould, North Park, Rand, Spicer, 
and Walden
431 AM MDT Wed Mar 13 2019

...BLIZZARD WARNING IN EFFECT UNTIL MIDNIGHT MDT TONIGHT...

* WHAT...Blizzard conditions. Additional snow accumulations of 8
  to 12 inches. Winds gusting as high as 40 mph.

* WHERE...North Park.

* WHEN...The heaviest snow and strongest winds will be during the
  day today.

* ADDITIONAL DETAILS...Travel will become very difficult.
  Widespread blowing snow could significantly reduce visibility.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Blizzard Warning means severe winter weather conditions are
expected or occurring. Falling and blowing snow with strong winds
and poor visibilities are likely. This will lead to whiteout
conditions, making travel extremely dangerous. Do not travel. If
you must travel, have a winter survival kit with you. If you get
stranded, stay with your vehicle. 

The latest road conditions for the state you are calling from can
be obtained by calling 5 1 1.

&&

$$

COZ032-131900-
/O.EXB.KBOU.WS.W.0008.000000T0000Z-190314T0300Z/
Grand and Summit Counties Below 9000 Feet-
Including the cities of Dillon, Fraser, Granby, Grand Lake, 
Hot Sulphur Springs, and Kremmling
431 AM MDT Wed Mar 13 2019

...WINTER STORM WARNING IN EFFECT UNTIL 9 PM MDT THIS EVENING...

* WHAT...Heavy snow. Additional snow accumulations of 5 to 10 
  inches. Winds gusting as high as 35 mph.

* WHERE...Grand and Summit Counties Below 9000 Feet.

* WHEN...Until 9 PM MDT this evening.

* ADDITIONAL DETAILS...Travel could be very difficult. Areas of
  blowing snow could significantly reduce visibility.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Winter Storm Warning for snow means severe winter weather
conditions will make travel very hazardous or impossible. If you
must travel, keep an extra flashlight, food and water in your
vehicle in case of an emergency. 

The latest road conditions for the state you are calling from can
be obtained by calling 5 1 1.

&&

$$

COZ040-041-043-131900-
/O.CON.KBOU.BZ.W.0003.190313T1600Z-190314T0600Z/
Denver-Castle Rock-Greeley-
Including the cities of Aurora, Brighton, City of Denver, 
Denver International Airport, Highlands Ranch, Littleton, Parker,
Castle Rock, Elbert, Fondis, Kiowa, Larkspur, Eaton, Fort Lupton,
Greeley, and Roggen
431 AM MDT Wed Mar 13 2019

...BLIZZARD WARNING REMAINS IN EFFECT FROM 10 AM THIS MORNING TO
MIDNIGHT MDT TONIGHT...

* WHAT...Blizzard conditions expected. Total snow accumulations of
  6 to 12 inches expected. Winds gusting as high as 70 mph. The
  heaviest snow and strongest winds will be east of Interstate 25.

* WHERE...Greeley, Denver and Castle Rock.

* WHEN...From 10 AM this morning to midnight MDT tonight.

* ADDITIONAL DETAILS...Travel will become very difficult by
  afternoon. Widespread blowing snow could significantly reduce
  visibility. Very strong winds could cause tree damage and power
  outages.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Blizzard Warning means severe winter weather conditions are
expected or occurring. Falling and blowing snow with strong winds
and poor visibilities are likely. This will lead to whiteout
conditions, making travel extremely dangerous. Do not travel. If
you must travel, have a winter survival kit with you. If you get
stranded, stay with your vehicle. 

The latest road conditions for the state you are calling from can
be obtained by calling 5 1 1.

&&

$$

COZ042-044>046-048>051-131900-
/O.CON.KBOU.BZ.W.0003.190313T1800Z-190314T1800Z/
Briggsdale-Fort Morgan-Byers-Limon-Sterling-Akron-Julesburg-
Holyoke-
Including the cities of Briggsdale, Grover, Pawnee Buttes, 
Raymer, Stoneham, Brush, Fort Morgan, Goodrich, Wiggins, Bennett,
Byers, Deer Trail, Leader, Agate, Hugo, Limon, Matheson, Crook, 
Merino, Sterling, Peetz, Akron, Cope, Last Chance, Otis, 
Julesburg, Ovid, Sedgwick, Amherst, Haxtun, and Holyoke
431 AM MDT Wed Mar 13 2019

...BLIZZARD WARNING REMAINS IN EFFECT FROM NOON TODAY TO NOON MDT
THURSDAY...

* WHAT...Blizzard conditions expected. Total snow accumulations of
  6 to 12 inches expected. Winds gusting as high as 80 mph.

* WHERE...The northeast Colorado plains along and north of
  Interstate 70.

* WHEN...Blizzard conditions will develop during the early to mid
  afternoon hours. The heaviest snow will be this afternoon, but
  very strong winds will continue overnight. Significant drifting
  snow will likely continue much of the day Thursday.

* ADDITIONAL DETAILS...Travel will become difficult or impossible.
  Periods of near zero visibility are expected. Very strong winds
  could cause tree damage and power outages.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Blizzard Warning means severe winter weather conditions are
expected or occurring. Falling and blowing snow with strong winds
and poor visibilities are likely. This will lead to whiteout
conditions, making travel extremely dangerous. Do not travel. If
you must travel, have a winter survival kit with you. If you get
stranded, stay with your vehicle. 

The latest road conditions for the state you are calling from can
be obtained by calling 5 1 1.

&&

$$

COZ034-131900-
/O.CON.KBOU.WS.W.0008.000000T0000Z-190314T1800Z/
The Mountains of Summit County, the Mosquito Range, and the
Indian Peaks-
Including the cities of Berthoud Pass, Breckenridge, 
East Slopes Mosquito Range, East Slopes Southern Gore Range, 
Eisenhower Tunnel, Indian Peaks, Kenosha Mountains, Mount Evans, 
Williams Fork Mountains, and Winter Park
431 AM MDT Wed Mar 13 2019

...WINTER STORM WARNING REMAINS IN EFFECT UNTIL NOON MDT
THURSDAY...

* WHAT...Heavy snow. Additional snow accumulations of 9 to 16 
  inches. Winds gusting as high as 60 mph.

* WHERE...The Mountains of Summit County, the Mosquito Range, 
  and the Indian Peaks.

* WHEN...The heaviest snow and strongest winds will be during the
  day today.

* ADDITIONAL DETAILS...Travel could be very difficult to
  impossible. Blowing snow could significantly reduce
  visibility.Strong winds could cause tree damage and power
  outages. The cold wind chills as low as 25 below zero could 
  cause frostbite on exposed skin in as little as 30 minutes.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Winter Storm Warning for snow means severe winter weather
conditions will make travel very hazardous or impossible. If you
must travel, keep an extra flashlight, food and water in your
vehicle in case of an emergency. 

The latest road conditions for the state you are calling from can
be obtained by calling 5 1 1.

&&

$$

COZ036-039-131900-
/O.CON.KBOU.WS.W.0008.190313T1600Z-190314T0600Z/
The Southern Front Range Foothills-
Boulder and the western suburbs of Denver-
Including the cities of Bailey, Central City, Evergreen, 
Georgetown, Idaho Springs, Westcreek, Arvada, Boulder, Golden, 
Lakewood, and Longmont
431 AM MDT Wed Mar 13 2019

...WINTER STORM WARNING REMAINS IN EFFECT FROM 10 AM THIS MORNING
TO MIDNIGHT MDT TONIGHT...

* WHAT...Heavy snow expected. Total snow accumulations of 4 to 10 
  inches expected. Winds gusting as high as 55 mph.

* WHERE...The Southern Front Range Foothills and Boulder and the 
  western suburbs of Denver.

* WHEN...The heaviest snow and strongest winds will be during the
  day today.

* ADDITIONAL DETAILS...Plan on slippery road conditions. Areas of
  blowing snow could significantly reduce visibility. Strong 
  winds could cause tree damage or power outages.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Winter Storm Warning for snow means severe winter weather
conditions will make travel very hazardous or impossible. If you
must travel, keep an extra flashlight, food and water in your
vehicle in case of an emergency. 

The latest road conditions for the state you are calling from can
be obtained by calling 5 1 1.

&&

$$

COZ037-131900-
/O.NEW.KBOU.WW.Y.0018.190313T1031Z-190314T0300Z/
South Park-
Including the cities of Fairplay, Hartsel, Lake George, 
and South Park
431 AM MDT Wed Mar 13 2019

...WINTER WEATHER ADVISORY IN EFFECT UNTIL 9 PM MDT THIS
EVENING...

* WHAT...Snow. Additional snow accumulations of 4 to 6 inches. 
  Winds gusting as high as 50 mph, especially along US 285.

* WHERE...South Park.

* WHEN...Most of the snow will fall this morning, then winds will
  increase this afternoon.

* ADDITIONAL DETAILS...Plan on slippery road conditions. Areas of
  blowing snow could significantly reduce visibility.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Winter Weather Advisory for snow means periods of snow will
cause primarily travel difficulties. Expect snow covered roads
and limited visibilities, and use caution while driving. 

The latest road conditions for the state you are calling from can
be obtained by calling 5 1 1.

&&

$$

Gimmestad/RPK/Danielson
863 
WWUS45 KBOU 131632
WSWBOU

URGENT - WINTER WEATHER MESSAGE
National Weather Service Denver CO
1032 AM MDT Wed Mar 13 2019

...INTENSE WINTER STORM FOR THE MOUNTAINS AND EASTERN COLORADO...

.A winter storm centered over southeastern Colorado will continue
to intensify through this afternoon. This will produce very 
strong winds and areas of heavy snow. Rain has already changed to
snow over the I-25 urban corridor, and rain will change to snow 
over the plains during early to middle afternoon. Blizzard 
conditions will develop quickly through the early afternoon. Near 
zero visibilities are expected with wind gusts of up to 80 mph and
up to a foot of snow on the plains east of a line from Greeley to
Denver International Airport. 

In areas closer to the mountains, there will be less snow, but a 
period of very heavy snow and strong winds is likely during the 
day today that will likely create near blizzard conditions for a 
while. Strong winds will continue to create blizzard conditions on
the plains overnight tonight. Closer to the mountains, there will
be some improvement but still enough wind for some drifting snow 
and continued difficult travel. Much of the northern Colorado 
mountains will also see heavy snow and windy conditions today, 
especially near the Wyoming border.

Travelers across the Colorado mountains and eastern plains should
consider canceling travel plans today, as conditions will
deteriorate quickly during the late morning or early afternoon.
Be aware that if you travel today, you could become stranded or 
have a very difficult time returning this afternoon. Road closures
can be expected, especially on the eastern plains and near the 
Wyoming border, but possibly also along the I- 25 corridor during 
the peak of the storm later today. Residents should also be 
prepared for power outages from the very strong winds.

COZ038-040-041-043-140045-
/O.CON.KBOU.BZ.W.0003.000000T0000Z-190314T0600Z/
Fort Collins-Denver-Castle Rock-Greeley-
Including the cities of Fort Collins, Hereford, Loveland, Nunn, 
Aurora, Brighton, City of Denver, Denver International Airport, 
Highlands Ranch, Littleton, Parker, Castle Rock, Elbert, Fondis, 
Kiowa, Larkspur, Eaton, Fort Lupton, Greeley, and Roggen
1032 AM MDT Wed Mar 13 2019

...BLIZZARD WARNING REMAINS IN EFFECT UNTIL MIDNIGHT MDT
TONIGHT...

* WHAT...Blizzard conditions expected. Total snow accumulations 
  of 6 to 12 inches expected. Winds gusting as high as 70 mph. 
  The heaviest snow and strongest winds will be east of 
  Interstate 25.

* WHERE...Greeley, Denver and Castle Rock.

* WHEN...From 10 AM this morning to midnight MDT tonight.

* ADDITIONAL DETAILS...Travel will become very difficult by 
  afternoon. Widespread blowing snow could significantly reduce 
  visibility. Very strong winds could cause tree damage and 
  power outages.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Blizzard Warning means severe winter weather conditions are
expected or occurring. Falling and blowing snow with strong winds
and poor visibilities are likely. This will lead to whiteout
conditions, making travel extremely dangerous. Do not travel. If
you must travel, have a winter survival kit with you. If you get
stranded, stay with your vehicle.

The latest road conditions for the state you are calling from can
be obtained by calling 5 1 1.

&&

$$

COZ042-044>046-048>051-140045-
/O.CON.KBOU.BZ.W.0003.190313T1800Z-190314T1800Z/
Briggsdale-Fort Morgan-Byers-Limon-Sterling-Akron-Julesburg-
Holyoke-
Including the cities of Briggsdale, Grover, Pawnee Buttes, 
Raymer, Stoneham, Brush, Fort Morgan, Goodrich, Wiggins, Bennett,
Byers, Deer Trail, Leader, Agate, Hugo, Limon, Matheson, Crook, 
Merino, Sterling, Peetz, Akron, Cope, Last Chance, Otis, 
Julesburg, Ovid, Sedgwick, Amherst, Haxtun, and Holyoke
1032 AM MDT Wed Mar 13 2019

...BLIZZARD WARNING REMAINS IN EFFECT UNTIL NOON MDT THURSDAY...

* WHAT...Blizzard conditions expected. Total snow accumulations 
  of 6 to 12 inches expected. Winds gusting as high as 80 mph.

* WHERE...The northeast Colorado plains along and north of 
  Interstate 70.

* WHEN...Blizzard conditions will develop during the early to 
  mid afternoon hours. The heaviest snow will be this afternoon, 
  but very strong winds will continue overnight. Significant 
  drifting snow will likely continue much of the day Thursday.

* ADDITIONAL DETAILS...Travel will become difficult or 
  impossible. Periods of near zero visibility are expected. Very 
  strong winds could cause tree damage and power outages.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Blizzard Warning means severe winter weather conditions are
expected or occurring. Falling and blowing snow with strong winds
and poor visibilities are likely. This will lead to whiteout
conditions, making travel extremely dangerous. Do not travel. If
you must travel, have a winter survival kit with you. If you get
stranded, stay with your vehicle.

The latest road conditions for the state you are calling from can
be obtained by calling 5 1 1.

&&

$$

COZ031-033-035-140045-
/O.CON.KBOU.BZ.W.0003.000000T0000Z-190314T1200Z/
Rabbit Ears Pass-
Rocky Mountain National Park and the Medicine Bow Range-
The Northern Front Range Foothills-
Including the cities of East Slopes Park and Northern Gore
Ranges, Gore Pass, Rabbit Ears Pass, Cameron Pass, 
Laramie and Medicine Bow Mountains, Rabbit Ears Range, 
Rocky Mountain National Park, Willow Creek Pass, Estes Park, 
Glendevey, Nederland, and Red Feather Lakes
1032 AM MDT Wed Mar 13 2019

...BLIZZARD WARNING REMAINS IN EFFECT UNTIL 6 AM MDT THURSDAY...

* WHAT...Blizzard conditions. Additional snow accumulations of 
  10 to 15 inches. Winds gusting as high as 55 mph.

* WHERE...Rabbit Ears Pass.

* WHEN...The heaviest snow and strongest winds will be during 
  the day today.

* ADDITIONAL DETAILS...Travel could be very difficult. Blowing 
  snow could significantly reduce visibility. Strong winds could 
  cause tree damage. The cold wind chills as low as 20 below 
  zero could cause frostbite on exposed skin in as little as 30 
  minutes.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Blizzard Warning means severe winter weather conditions are
expected or occurring. Falling and blowing snow with strong winds
and poor visibilities are likely. This will lead to whiteout
conditions, making travel extremely dangerous. Do not travel. If
you must travel, have a winter survival kit with you. If you get
stranded, stay with your vehicle.

The latest road conditions for the state you are calling from can
be obtained by calling 5 1 1.

&&

$$

COZ030-140045-
/O.CON.KBOU.BZ.W.0003.000000T0000Z-190314T0600Z/
North Park-
Including the cities of Gould, North Park, Rand, Spicer, 
and Walden
1032 AM MDT Wed Mar 13 2019

...BLIZZARD WARNING REMAINS IN EFFECT UNTIL MIDNIGHT MDT
TONIGHT...

* WHAT...Blizzard conditions. Additional snow accumulations of 8 
  to 12 inches. Winds gusting as high as 40 mph.

* WHERE...North Park.

* WHEN...The heaviest snow and strongest winds will be during 
  the day today.

* ADDITIONAL DETAILS...Travel will become very difficult. 
  Widespread blowing snow could significantly reduce visibility.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Blizzard Warning means severe winter weather conditions are
expected or occurring. Falling and blowing snow with strong winds
and poor visibilities are likely. This will lead to whiteout
conditions, making travel extremely dangerous. Do not travel. If
you must travel, have a winter survival kit with you. If you get
stranded, stay with your vehicle.

The latest road conditions for the state you are calling from can
be obtained by calling 5 1 1.

&&

$$

COZ034-140045-
/O.CON.KBOU.WS.W.0008.000000T0000Z-190314T1800Z/
The Mountains of Summit County, the Mosquito Range, and the
Indian Peaks-
Including the cities of Berthoud Pass, Breckenridge, 
East Slopes Mosquito Range, East Slopes Southern Gore Range, 
Eisenhower Tunnel, Indian Peaks, Kenosha Mountains, Mount Evans, 
Williams Fork Mountains, and Winter Park
1032 AM MDT Wed Mar 13 2019

...WINTER STORM WARNING REMAINS IN EFFECT UNTIL NOON MDT
THURSDAY...

* WHAT...Heavy snow. Additional snow accumulations of 9 to 16 
  inches. Winds gusting as high as 60 mph.

* WHERE...The Mountains of Summit County, the Mosquito Range, 
  and the Indian Peaks.

* WHEN...The heaviest snow and strongest winds will be during 
  the day today.

* ADDITIONAL DETAILS...Travel could be very difficult to 
  impossible. Blowing snow could significantly reduce 
  visibility.Strong winds could cause tree damage and power 
  outages. The cold wind chills as low as 25 below zero could 
  cause frostbite on exposed skin in as little as 30 minutes.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Winter Storm Warning for snow means severe winter weather
conditions will make travel very hazardous or impossible. If you
must travel, keep an extra flashlight, food and water in your
vehicle in case of an emergency.

The latest road conditions for the state you are calling from can
be obtained by calling 5 1 1.

&&

$$

COZ036-039-140045-
/O.CON.KBOU.WS.W.0008.000000T0000Z-190314T0600Z/
The Southern Front Range Foothills-
Boulder and the western suburbs of Denver-
Including the cities of Bailey, Central City, Evergreen, 
Georgetown, Idaho Springs, Westcreek, Arvada, Boulder, Golden, 
Lakewood, and Longmont
1032 AM MDT Wed Mar 13 2019

...WINTER STORM WARNING REMAINS IN EFFECT UNTIL MIDNIGHT MDT
TONIGHT...

* WHAT...Heavy snow expected. Total snow accumulations of 4 to 
  10 inches expected. Winds gusting as high as 55 mph.

* WHERE...The Southern Front Range Foothills and Boulder and the 
  western suburbs of Denver.

* WHEN...The heaviest snow and strongest winds will be during 
  the day today.

* ADDITIONAL DETAILS...Plan on slippery road conditions. Areas 
  of blowing snow could significantly reduce visibility. Strong 
  winds could cause tree damage or power outages.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Winter Storm Warning for snow means severe winter weather
conditions will make travel very hazardous or impossible. If you
must travel, keep an extra flashlight, food and water in your
vehicle in case of an emergency.

The latest road conditions for the state you are calling from can
be obtained by calling 5 1 1.

&&

$$

COZ032-140045-
/O.CON.KBOU.WS.W.0008.000000T0000Z-190314T0300Z/
Grand and Summit Counties Below 9000 Feet-
Including the cities of Dillon, Fraser, Granby, Grand Lake, 
Hot Sulphur Springs, and Kremmling
1032 AM MDT Wed Mar 13 2019

...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 9 PM MDT THIS
EVENING...

* WHAT...Heavy snow. Additional snow accumulations of 5 to 10 
  inches. Winds gusting as high as 35 mph.

* WHERE...Grand and Summit Counties Below 9000 Feet.

* WHEN...Until 9 PM MDT this evening.

* ADDITIONAL DETAILS...Travel could be very difficult. Areas of 
  blowing snow could significantly reduce visibility.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Winter Storm Warning for snow means severe winter weather
conditions will make travel very hazardous or impossible. If you
must travel, keep an extra flashlight, food and water in your
vehicle in case of an emergency.

The latest road conditions for the state you are calling from can
be obtained by calling 5 1 1.

&&

$$

COZ037-140045-
/O.CON.KBOU.WW.Y.0018.000000T0000Z-190314T0300Z/
South Park-
Including the cities of Fairplay, Hartsel, Lake George, 
and South Park
1032 AM MDT Wed Mar 13 2019

...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 9 PM MDT THIS
EVENING...

* WHAT...Snow. Additional snow accumulations of 4 to 6 inches. 
  Winds gusting as high as 50 mph, especially along US 285.

* WHERE...South Park.

* WHEN...Most of the snow will fall this morning, then winds 
  will increase this afternoon.

* ADDITIONAL DETAILS...Plan on slippery road conditions. Areas 
  of blowing snow could significantly reduce visibility.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Winter Weather Advisory for snow means periods of snow will
cause primarily travel difficulties. Expect snow covered roads
and limited visibilities, and use caution while driving.

The latest road conditions for the state you are calling from can
be obtained by calling 5 1 1.

&&

$$
014 
WWUS45 KBOU 132012
WSWBOU

URGENT - WINTER WEATHER MESSAGE
National Weather Service Denver CO
212 PM MDT Wed Mar 13 2019

...INTENSE WINTER STORM FOR THE MOUNTAINS AND EASTERN COLORADO...

.The powerful winter storm affecting eastern Colorado today has
spread blizzard conditions across northeast Colorado from the
Front Range Foothills eastward to the Kansas border and from the
Wyoming border down to the Palmer Divide. Winds have been gusting
to 65 mph at most locations and up to 80 mph at a few locations. Snowfall
of several inches has also occurred. 

Travel across northeast Colorado has been severely impacted with 
many highways across northeast Colorado closed. Highway closures 
include I-76 northeast of Thornton, I-70 east of Watkins and I-25 
from the Denver Tech Center to the Air Force Academy. I-70 west of
Denver has also been closed from Golden to Idaho Springs. Pena 
Boulevard to Denver Airport has also been closed. 

Power outages have also been scattered across northeast Colorado
with up to 128,000 customers without power. 

The blizzard conditions are expected to continue through the
afternoon. Some improvement is expected this evening as snowfall 
rates decrease and wind speeds begin to come down. 

COZ042-044>046-048>051-140415-
/O.CON.KBOU.BZ.W.0003.000000T0000Z-190314T1800Z/
Briggsdale-Fort Morgan-Byers-Limon-Sterling-Akron-Julesburg-
Holyoke-
Including the cities of Briggsdale, Grover, Pawnee Buttes, 
Raymer, Stoneham, Brush, Fort Morgan, Goodrich, Wiggins, Bennett,
Byers, Deer Trail, Leader, Agate, Hugo, Limon, Matheson, Crook, 
Merino, Sterling, Peetz, Akron, Cope, Last Chance, Otis, 
Julesburg, Ovid, Sedgwick, Amherst, Haxtun, and Holyoke
212 PM MDT Wed Mar 13 2019

...BLIZZARD WARNING REMAINS IN EFFECT UNTIL NOON MDT THURSDAY...

* WHAT...Blizzard conditions. Additional snow accumulations of 5 
  to 7 inches. Winds gusting as high as 80 mph.

* WHERE...Portions of east central and northeast Colorado.

* WHEN...Until noon MDT Thursday.

* ADDITIONAL DETAILS...Travel will be very difficult if not
  impossible. Widespread blowing snow could significantly reduce 
  visibility. The hazardous conditions could impact the morning or
  evening commute. Very strong winds could cause extensive tree 
  damage and power outages.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Blizzard Warning means severe winter weather conditions are
occurring. Falling and blowing snow with strong winds and poor 
visibilities are likely. This will lead to whiteout conditions, 
making travel extremely dangerous. Do not travel. If you must 
travel, have a winter survival kit with you. If you get stranded, 
stay with your vehicle. 

The latest road conditions for the state you are calling from can
be obtained by calling 5 1 1.

&&

$$

COZ038-040-041-043-140415-
/O.CON.KBOU.BZ.W.0003.000000T0000Z-190314T0600Z/
Fort Collins-Denver-Castle Rock-Greeley-
Including the cities of Fort Collins, Hereford, Loveland, Nunn, 
Aurora, Brighton, City of Denver, Denver International Airport, 
Highlands Ranch, Littleton, Parker, Castle Rock, Elbert, Fondis, 
Kiowa, Larkspur, Eaton, Fort Lupton, Greeley, and Roggen
212 PM MDT Wed Mar 13 2019

...BLIZZARD WARNING REMAINS IN EFFECT UNTIL MIDNIGHT MDT
TONIGHT...

* WHAT...Blizzard conditions. Additional snow accumulations of 4
  to 6 inches. Winds gusting as high as 75 mph.

* WHERE...Greeley, Denver, Castle Rock and Fort Collins.

* WHEN...Until midnight MDT tonight.

* ADDITIONAL DETAILS...Plan on slippery road conditions.
  Widespread blowing snow could significantly reduce visibility.
  The hazardous conditions will impact the evening commute. Very
  strong winds could cause extensive tree damage and power outages.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Blizzard Warning means severe winter weather conditions are
occurring. Falling and blowing snow with strong winds and poor 
visibilities are likely. This will lead to whiteout conditions, 
making travel extremely dangerous. Do not travel. If you must 
travel, have a winter survival kit with you. If you get stranded, 
stay with your vehicle. 

The latest road conditions for the state you are calling from can
be obtained by calling 5 1 1.

&&

$$

COZ031-033-035-140415-
/O.CON.KBOU.BZ.W.0003.000000T0000Z-190314T1200Z/
Rabbit Ears Pass-
Rocky Mountain National Park and the Medicine Bow Range-
The Northern Front Range Foothills-
Including the cities of East Slopes Park and Northern Gore
Ranges, Gore Pass, Rabbit Ears Pass, Cameron Pass, 
Laramie and Medicine Bow Mountains, Rabbit Ears Range, 
Rocky Mountain National Park, Willow Creek Pass, Estes Park, 
Glendevey, Nederland, and Red Feather Lakes
212 PM MDT Wed Mar 13 2019

...BLIZZARD WARNING REMAINS IN EFFECT UNTIL 6 AM MDT THURSDAY...

* WHAT...Blizzard conditions. Additional snow accumulations of 5
  to 8 inches. Winds gusting as high as 55 mph.

* WHERE...Rabbit Ears Pass, The Northern Front Range Foothills 
  and Rocky Mountain National Park and the Medicine Bow Range.

* WHEN...Until 6 AM MDT Thursday.

* ADDITIONAL DETAILS...Travel will be very difficult. Areas of
  blowing snow could significantly reduce visibility. The
  hazardous conditions will impact the evening commute. Very 
  strong winds could cause extensive tree damage. The cold wind 
  chills as low as 20 below zero could cause frostbite on exposed 
  skin in as little as 30 minutes.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Blizzard Warning means severe winter weather conditions are
expected or occurring. Falling and blowing snow with strong winds
and poor visibilities are likely. This will lead to whiteout
conditions, making travel extremely dangerous. Do not travel. If
you must travel, have a winter survival kit with you. If you get
stranded, stay with your vehicle. 

The latest road conditions for the state you are calling from can
be obtained by calling 5 1 1.

&&

$$

COZ030-140415-
/O.CON.KBOU.BZ.W.0003.000000T0000Z-190314T0600Z/
North Park-
Including the cities of Gould, North Park, Rand, Spicer, 
and Walden
212 PM MDT Wed Mar 13 2019

...BLIZZARD WARNING REMAINS IN EFFECT UNTIL MIDNIGHT MDT
TONIGHT...

* WHAT...Blizzard conditions. Additional snow accumulations of 3 
  to 5 inches. Winds gusting as high as 40 mph.

* WHERE...North Park.

* WHEN...Until midnight MDT tonight.

* ADDITIONAL DETAILS...Plan on slippery road conditions. 
  Widespread blowing snow could significantly reduce visibility. 
  The hazardous conditions could impact the evening commute.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Blizzard Warning means severe winter weather conditions are
expected or occurring. Falling and blowing snow with strong winds
and poor visibilities are likely. This will lead to whiteout
conditions, making travel extremely dangerous. Do not travel. If
you must travel, have a winter survival kit with you. If you get
stranded, stay with your vehicle. 

The latest road conditions for the state you are calling from can
be obtained by calling 5 1 1.

&&

$$

COZ034-140415-
/O.CON.KBOU.WS.W.0008.000000T0000Z-190314T1800Z/
The Mountains of Summit County, the Mosquito Range, and the
Indian Peaks-
Including the cities of Berthoud Pass, Breckenridge, 
East Slopes Mosquito Range, East Slopes Southern Gore Range, 
Eisenhower Tunnel, Indian Peaks, Kenosha Mountains, Mount Evans, 
Williams Fork Mountains, and Winter Park
212 PM MDT Wed Mar 13 2019

...WINTER STORM WARNING REMAINS IN EFFECT UNTIL NOON MDT
THURSDAY...

* WHAT...Heavy snow. Additional snow accumulations of 4 to 6 
  inches. Winds gusting as high as 60 mph.

* WHERE...The Mountains of Summit County, the Mosquito Range, 
  and the Indian Peaks.

* WHEN...Until noon MDT Thursday.

* ADDITIONAL DETAILS...Plan on slippery road conditions. Patchy
  blowing snow could significantly reduce visibility. The
  hazardous conditions will impact evening commute. Strong winds
  could cause tree damage. Cold wind chills as low as 25 below 
  zero could cause frostbite on exposed skin in as little as 30 
  minutes.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Winter Storm Warning for snow means severe winter weather
conditions will make travel very hazardous or impossible. If you
must travel, keep an extra flashlight, food and water in your
vehicle in case of an emergency. 

The latest road conditions for the state you are calling from can
be obtained by calling 5 1 1.

&&

$$

COZ036-039-140415-
/O.CON.KBOU.WS.W.0008.000000T0000Z-190314T0600Z/
The Southern Front Range Foothills-
Boulder and the western suburbs of Denver-
Including the cities of Bailey, Central City, Evergreen, 
Georgetown, Idaho Springs, Westcreek, Arvada, Boulder, Golden, 
Lakewood, and Longmont
212 PM MDT Wed Mar 13 2019

...WINTER STORM WARNING REMAINS IN EFFECT UNTIL MIDNIGHT MDT
TONIGHT...

* WHAT...moderate to heavy snow. Additional snow accumulations of
  3 to 6 inches. Winds gusting as high as 50 mph.

* WHERE...The Southern Front Range Foothills, Boulder and the 
  western suburbs of Denver.

* WHEN...Until midnight MDT tonight.

* ADDITIONAL DETAILS...Plan on slippery road conditions. Areas of
  blowing snow could significantly reduce visibility. The
  hazardous conditions will impact the evening commute. Gusty
  winds could bring down tree branches and cause scattered power
  outages.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Winter Storm Warning for snow means severe winter weather
conditions will make travel very hazardous or impossible. If you
must travel, keep an extra flashlight, food and water in your
vehicle in case of an emergency. 

The latest road conditions for the state you are calling from can
be obtained by calling 5 1 1.

&&

$$

COZ032-140300-
/O.CON.KBOU.WS.W.0008.000000T0000Z-190314T0300Z/
Grand and Summit Counties Below 9000 Feet-
Including the cities of Dillon, Fraser, Granby, Grand Lake, 
Hot Sulphur Springs, and Kremmling
212 PM MDT Wed Mar 13 2019

...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 9 PM MDT THIS
EVENING...

* WHAT...Moderate to heavy snow. Additional snow accumulations of
  2 to 4 inches. Winds gusting as high as 35 mph.

* WHERE...Grand and Summit Counties Below 9000 Feet.

* WHEN...Until 9 PM MDT this evening.

* ADDITIONAL DETAILS...Plan on slippery road conditions. Areas 
  of blowing snow could significantly reduce visibility. The 
  hazardous conditions could impact the evening commute.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Winter Storm Warning for snow means severe winter weather
conditions will make travel very hazardous or impossible. If you
must travel, keep an extra flashlight, food and water in your
vehicle in case of an emergency. 

The latest road conditions for the state you are calling from can
be obtained by calling 5 1 1.

&&

$$

COZ037-140300-
/O.CON.KBOU.WW.Y.0018.000000T0000Z-190314T0300Z/
South Park-
Including the cities of Fairplay, Hartsel, Lake George, 
and South Park
212 PM MDT Wed Mar 13 2019

...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 9 PM MDT THIS
EVENING...

* WHAT...Snow. Additional snow accumulations up to two inches. 
  Winds gusting as high as 50 mph.

* WHERE...South Park.

* WHEN...Until 9 PM MDT this evening.

* ADDITIONAL DETAILS...Plan on slippery road conditions. Patchy 
  blowing snow could significantly reduce visibility. The 
  hazardous conditions could impact the evening commute. Gusty 
  winds could bring down tree branches.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Winter Weather Advisory for snow means periods of snow will
cause primarily travel difficulties. Expect snow covered roads
and limited visibilities, and use caution while driving. 

The latest road conditions for the state you are calling from can
be obtained by calling 5 1 1.

&&

$$
947 
WWUS45 KBOU 132259
WSWBOU

URGENT - WINTER WEATHER MESSAGE
National Weather Service Denver CO
459 PM MDT Wed Mar 13 2019

...INTENSE WINTER STORM CONTINUES EAST OF THE MOUNTAINS...

.The powerful winter storm affecting eastern Colorado today has
spread blizzard conditions across northeast Colorado from the
Front Range Foothills eastward to the Kansas border and from the
Wyoming border down to the Palmer Divide. Winds have been gusting
to 65 mph at most locations and up to 80 mph at a few locations.
The winds and snow have decreased in the mountains, so blizzard 
warnings have been downgraded to advisories for the night for
continued light snow. The most intense portion of the storm has 
now shifted east of the Interstate 25 corridor. 

Travel across northeast Colorado has been severely impacted with
many highways across northeast Colorado closed. Highway closures
include I-76 northeast of Thornton, I-70 east of Watkins and I-
25 from the Denver Tech Center to the Air Force Academy. I-
70 west of Denver has also been closed from Golden to Idaho
Springs. Pena Boulevard to Denver Airport has also been closed.

Power outages have also been scattered across northeast Colorado
with up to 128,000 customers without power.

The blizzard conditions are expected to continue through the
evening hours across lower elevations. Some improvement is 
expected this evening as snowfall rates decrease and wind speeds 
begin to decrease. 

COZ031-033-140700-
/O.CAN.KBOU.BZ.W.0003.000000T0000Z-190314T1200Z/
/O.EXB.KBOU.WW.Y.0018.000000T0000Z-190314T1200Z/
Rabbit Ears Pass-
Rocky Mountain National Park and the Medicine Bow Range-
Including the cities of East Slopes Park and Northern Gore
Ranges, Gore Pass, Rabbit Ears Pass, Cameron Pass, 
Laramie and Medicine Bow Mountains, Rabbit Ears Range, 
Rocky Mountain National Park, and Willow Creek Pass
459 PM MDT Wed Mar 13 2019

...WINTER WEATHER ADVISORY IN EFFECT UNTIL 6 AM MDT THURSDAY...
...BLIZZARD WARNING IS CANCELLED...

* WHAT...Snow. Additional snow accumulations of 2 to 5 inches.
  Winds gusting as high as 45 mph.

* WHERE...Rabbit Ears Pass and Rocky Mountain National Park and 
  the Medicine Bow Range.

* WHEN...Until 6 AM MDT Thursday.

* ADDITIONAL DETAILS...Plan on slippery road conditions. Patchy 
  blowing snow could significantly reduce visibility. The 
  hazardous conditions could impact the evening commute. Gusty 
  winds could bring down tree branches.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Winter Weather Advisory for snow means periods of snow will
cause primarily travel difficulties. Expect snow covered roads
and limited visibilities, and use caution while driving. 

The latest road conditions for the state you are calling from can
be obtained by calling 5 1 1.

&&

$$

COZ030-140700-
/O.CAN.KBOU.BZ.W.0003.000000T0000Z-190314T0600Z/
/O.EXB.KBOU.WW.Y.0018.000000T0000Z-190314T1200Z/
North Park-
Including the cities of Gould, North Park, Rand, Spicer, 
and Walden
459 PM MDT Wed Mar 13 2019

...WINTER WEATHER ADVISORY IN EFFECT UNTIL 6 AM MDT THURSDAY...
...BLIZZARD WARNING IS CANCELLED...

* WHAT...Snow. Additional snow accumulations of 1 to 2 inches. 
  Winds gusting as high as 35 mph.

* WHERE...North Park.

* WHEN...Until 6 AM MDT Thursday.

* ADDITIONAL DETAILS...Plan on slippery road conditions. Patchy 
  blowing snow could significantly reduce visibility. The 
  hazardous conditions could impact the evening commute. Gusty 
  winds could bring down tree branches.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Winter Weather Advisory for snow means periods of snow will
cause primarily travel difficulties. Expect snow covered roads
and limited visibilities, and use caution while driving. 

The latest road conditions for the state you are calling from can
be obtained by calling 5 1 1.

&&

$$

COZ034-140700-
/O.CAN.KBOU.WS.W.0008.000000T0000Z-190314T1800Z/
/O.EXB.KBOU.WW.Y.0018.000000T0000Z-190314T1200Z/
The Mountains of Summit County, the Mosquito Range, and the
Indian Peaks-
Including the cities of Berthoud Pass, Breckenridge, 
East Slopes Mosquito Range, East Slopes Southern Gore Range, 
Eisenhower Tunnel, Indian Peaks, Kenosha Mountains, Mount Evans, 
Williams Fork Mountains, and Winter Park
459 PM MDT Wed Mar 13 2019

...WINTER WEATHER ADVISORY IN EFFECT UNTIL 6 AM MDT THURSDAY...
...WINTER STORM WARNING IS CANCELLED...

* WHAT...Snow. Additional snow accumulations of 1 to 4 inches.
  Winds gusting as high as 50 mph.

* WHERE...The Mountains of Summit County, the Mosquito Range, 
  and the Indian Peaks.

* WHEN...Until 6 AM MDT Thursday.

* ADDITIONAL DETAILS...Plan on slippery road conditions. Patchy 
  blowing snow could significantly reduce visibility. The 
  hazardous conditions could impact the evening commute. Gusty 
  winds could bring down tree branches.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Winter Weather Advisory for snow means periods of snow will
cause primarily travel difficulties. Expect snow covered roads
and limited visibilities, and use caution while driving. 

The latest road conditions for the state you are calling from can
be obtained by calling 5 1 1.

&&

$$

COZ032-140700-
/O.CAN.KBOU.WS.W.0008.000000T0000Z-190314T0300Z/
/O.EXB.KBOU.WW.Y.0018.000000T0000Z-190314T1200Z/
Grand and Summit Counties Below 9000 Feet-
Including the cities of Dillon, Fraser, Granby, Grand Lake, 
Hot Sulphur Springs, and Kremmling
459 PM MDT Wed Mar 13 2019

...WINTER WEATHER ADVISORY IN EFFECT UNTIL 6 AM MDT THURSDAY...
...WINTER STORM WARNING IS CANCELLED...

* WHAT...Snow. Additional snow accumulations of 1 to 3 inches. 
  Winds gusting as high as 35 mph.

* WHERE...Grand and Summit Counties Below 9000 Feet.

* WHEN...Until 6 AM MDT Thursday.

* ADDITIONAL DETAILS...Plan on slippery road conditions. Patchy 
  blowing snow could significantly reduce visibility. The 
  hazardous conditions could impact the evening commute. Gusty 
  winds could bring down tree branches.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Winter Weather Advisory for snow means periods of snow will
cause primarily travel difficulties. Expect snow covered roads
and limited visibilities, and use caution while driving. 

The latest road conditions for the state you are calling from can
be obtained by calling 5 1 1.

&&

$$

COZ042-044>046-048>051-140700-
/O.CON.KBOU.BZ.W.0003.000000T0000Z-190314T1800Z/
Briggsdale-Fort Morgan-Byers-Limon-Sterling-Akron-Julesburg-
Holyoke-
Including the cities of Briggsdale, Grover, Pawnee Buttes, 
Raymer, Stoneham, Brush, Fort Morgan, Goodrich, Wiggins, Bennett,
Byers, Deer Trail, Leader, Agate, Hugo, Limon, Matheson, Crook, 
Merino, Sterling, Peetz, Akron, Cope, Last Chance, Otis, 
Julesburg, Ovid, Sedgwick, Amherst, Haxtun, and Holyoke
459 PM MDT Wed Mar 13 2019

...BLIZZARD WARNING REMAINS IN EFFECT UNTIL NOON MDT THURSDAY...

* WHAT...Blizzard conditions. Additional snow accumulations of 2
  to 4 inches. Winds gusting as high as 70 mph.

* WHERE...Portions of east central and northeast Colorado.

* WHEN...Until noon MDT Thursday.

* ADDITIONAL DETAILS...Travel will be very difficult if not 
  impossible. Widespread blowing snow could significantly reduce 
  visibility. The hazardous conditions could impact the morning 
  or evening commute. Very strong winds could cause extensive 
  tree damage and power outages.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Blizzard Warning means severe winter weather conditions are
occurring. Falling and blowing snow with strong winds and poor
visibilities are likely. This will lead to whiteout conditions,
making travel extremely dangerous. Do not travel. If you must
travel, have a winter survival kit with you. If you get stranded,
stay with your vehicle.

The latest road conditions for the state you are calling from can
be obtained by calling 5 1 1.

&&

$$

COZ038-040-041-043-140600-
/O.CON.KBOU.BZ.W.0003.000000T0000Z-190314T0600Z/
Fort Collins-Denver-Castle Rock-Greeley-
Including the cities of Fort Collins, Hereford, Loveland, Nunn, 
Aurora, Brighton, City of Denver, Denver International Airport, 
Highlands Ranch, Littleton, Parker, Castle Rock, Elbert, Fondis, 
Kiowa, Larkspur, Eaton, Fort Lupton, Greeley, and Roggen
459 PM MDT Wed Mar 13 2019

...BLIZZARD WARNING REMAINS IN EFFECT UNTIL MIDNIGHT MDT
TONIGHT...

* WHAT...Blizzard conditions. Additional snow accumulations of 1
  to 4 inches. Winds gusting as high as 65 mph.

* WHERE...Greeley, Denver, Castle Rock and Fort Collins.

* WHEN...Until midnight MDT tonight.

* ADDITIONAL DETAILS...Plan on slippery road conditions. 
  Widespread blowing snow could significantly reduce visibility. 
  The hazardous conditions will impact the evening commute. Very 
  strong winds could cause extensive tree damage and power 
  outages.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Blizzard Warning means severe winter weather conditions are
occurring. Falling and blowing snow with strong winds and poor
visibilities are likely. This will lead to whiteout conditions,
making travel extremely dangerous. Do not travel. If you must
travel, have a winter survival kit with you. If you get stranded,
stay with your vehicle.

The latest road conditions for the state you are calling from can
be obtained by calling 5 1 1.

&&

$$

COZ035-140700-
/O.CON.KBOU.BZ.W.0003.000000T0000Z-190314T1200Z/
The Northern Front Range Foothills-
Including the cities of Estes Park, Glendevey, Nederland, 
and Red Feather Lakes
459 PM MDT Wed Mar 13 2019

...BLIZZARD WARNING REMAINS IN EFFECT UNTIL 6 AM MDT THURSDAY...

* WHAT...Blizzard conditions. Additional snow accumulations of 2
  to 4 inches. Winds gusting as high as 55 mph.

* WHERE...Rabbit Ears Pass, The Northern Front Range Foothills 
  and Rocky Mountain National Park and the Medicine Bow Range.

* WHEN...Until 6 AM MDT Thursday.

* ADDITIONAL DETAILS...Travel will be very difficult. Areas of 
  blowing snow could significantly reduce visibility. The 
  hazardous conditions will impact the evening commute. Very 
  strong winds could cause extensive tree damage. The cold wind 
  chills as low as 20 below zero could cause frostbite on 
  exposed skin in as little as 30 minutes.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Blizzard Warning means severe winter weather conditions are
expected or occurring. Falling and blowing snow with strong winds
and poor visibilities are likely. This will lead to whiteout
conditions, making travel extremely dangerous. Do not travel. If
you must travel, have a winter survival kit with you. If you get
stranded, stay with your vehicle.

The latest road conditions for the state you are calling from can
be obtained by calling 5 1 1.

&&

$$

COZ036-039-140600-
/O.CON.KBOU.WS.W.0008.000000T0000Z-190314T0600Z/
The Southern Front Range Foothills-
Boulder and the western suburbs of Denver-
Including the cities of Bailey, Central City, Evergreen, 
Georgetown, Idaho Springs, Westcreek, Arvada, Boulder, Golden, 
Lakewood, and Longmont
459 PM MDT Wed Mar 13 2019

...WINTER STORM WARNING REMAINS IN EFFECT UNTIL MIDNIGHT MDT
TONIGHT...

* WHAT...snow. Additional snow accumulations of 1 to 4 inches. 
  Winds gusting as high as 50 mph.

* WHERE...The Southern Front Range Foothills, Boulder and the 
  western suburbs of Denver.

* WHEN...Until midnight MDT tonight.

* ADDITIONAL DETAILS...Plan on slippery road conditions. Areas 
  of blowing snow could significantly reduce visibility. The 
  hazardous conditions will impact the evening commute. Gusty 
  winds could bring down tree branches and cause scattered power 
  outages.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Winter Storm Warning for snow means severe winter weather
conditions will make travel very hazardous or impossible. If you
must travel, keep an extra flashlight, food and water in your
vehicle in case of an emergency.

The latest road conditions for the state you are calling from can
be obtained by calling 5 1 1.

&&

$$

COZ037-140300-
/O.CON.KBOU.WW.Y.0018.000000T0000Z-190314T0300Z/
South Park-
Including the cities of Fairplay, Hartsel, Lake George, 
and South Park
459 PM MDT Wed Mar 13 2019

...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 9 PM MDT THIS
EVENING...

* WHAT...Snow. Additional snow accumulations up to two inches. 
  Winds gusting as high as 50 mph.

* WHERE...South Park.

* WHEN...Until 9 PM MDT this evening.

* ADDITIONAL DETAILS...Plan on slippery road conditions. Patchy 
  blowing snow could significantly reduce visibility. The 
  hazardous conditions could impact the evening commute. Gusty 
  winds could bring down tree branches.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Winter Weather Advisory for snow means periods of snow will
cause primarily travel difficulties. Expect snow covered roads
and limited visibilities, and use caution while driving.

The latest road conditions for the state you are calling from can
be obtained by calling 5 1 1.

&&

$$
333 
WWUS45 KBOU 140240
WSWBOU

URGENT - WINTER WEATHER MESSAGE
National Weather Service Denver CO
840 PM MDT Wed Mar 13 2019

...INTENSE WINTER STORM CONTINUES OVER THE EASTERN PLAINS AND
PALMER DIVIDE...

.The powerful winter storm that brought blizzard conditions to
much of the area will slowly pull away from the state tonight. As
a result, snow intensity will slowly decrease across the plains
and Palmer Divide area tonight. However, strong winds will
continue east of I-25 and over the Palmer Divide, and that is 
keeping blizzard conditions in place. 

The roaring winds across the plains on Wednesday mostly peaked in
the 60 to 80 mph range. Snowfall amounts have ranged from 2-6 
inches right next to the foothills, to 6 to 20 inches in the 
mountains and foothills, to between 4 and 10 inches across most of
the northeast Colorado plains and Palmer Divide area east of 
I-25.

Travel across northeast Colorado has been severely impacted and many
highways east of Denver remain closed.

Power outages have also been scattered across northeast Colorado,
with at one point up to 200,000 customers without power.

A slow but gradual improvement in conditions can be expected
overnight into early Thursday morning, but travel in some
locations is extremely dangerous. Do not travel unless absolutely
necessary.  

COZ040-140345-
/O.CAN.KBOU.BZ.W.0003.000000T0000Z-190314T0600Z/
Denver-
Including the cities of Aurora, Brighton, City of Denver, 
Denver International Airport, Highlands Ranch, Littleton, 
and Parker
840 PM MDT Wed Mar 13 2019

...BLIZZARD WARNING IS CANCELLED...

Snow has decreased, and any additional snow accumulation tonight
will be less than a half inch. Gusty winds will continue to
produce considerable blowing snow over the eastern third of the
Denver metro area, including DIA and Aurora. 

$$

COZ035-140345-
/O.CAN.KBOU.BZ.W.0003.000000T0000Z-190314T1200Z/
The Northern Front Range Foothills-
Including the cities of Estes Park, Glendevey, Nederland, 
and Red Feather Lakes
840 PM MDT Wed Mar 13 2019

...BLIZZARD WARNING IS CANCELLED...

Snow has decreased, and any additional snow accumulation tonight
will be less than an inch. Gusty winds will continue to produce 
considerable blowing snow in open areas, and some road closures
remain in place near the Wyoming border. 

$$

COZ036-039-140345-
/O.CAN.KBOU.WS.W.0008.000000T0000Z-190314T0600Z/
The Southern Front Range Foothills-
Boulder and the western suburbs of Denver-
Including the cities of Bailey, Central City, Evergreen, 
Georgetown, Idaho Springs, Westcreek, Arvada, Boulder, Golden, 
Lakewood, and Longmont
840 PM MDT Wed Mar 13 2019

...WINTER STORM WARNING IS CANCELLED...

Snow has mostly ended. 

$$

COZ037-140345-
/O.CAN.KBOU.WW.Y.0018.000000T0000Z-190314T0300Z/
South Park-
Including the cities of Fairplay, Hartsel, Lake George, 
and South Park
840 PM MDT Wed Mar 13 2019

...WINTER WEATHER ADVISORY IS CANCELLED...

Snow has mostly ended. 

$$

COZ041-141045-
/O.EXT.KBOU.BZ.W.0003.000000T0000Z-190314T1200Z/
Castle Rock-
Including the cities of Castle Rock, Elbert, Fondis, Kiowa, 
and Larkspur
840 PM MDT Wed Mar 13 2019

...BLIZZARD WARNING NOW IN EFFECT UNTIL 6 AM MDT THURSDAY...

* WHAT...Blizzard conditions. Additional snow accumulations of up
  to two inches. Winds gusting as high as 60 mph.

* WHERE...Castle Rock.

* WHEN...Until 6 AM MDT Thursday.

* ADDITIONAL DETAILS...Numerous roads remain closed. Widespread
  blowing snow could significantly reduce visibility. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Blizzard Warning means severe winter weather conditions are
expected or occurring. Falling and blowing snow with strong winds
and poor visibilities are likely. This will lead to whiteout
conditions, making travel extremely dangerous. Do not travel. If
you must travel, have a winter survival kit with you. If you get
stranded, stay with your vehicle. 

The latest road conditions for the state you are calling from can
be obtained by calling 5 1 1.

&&

$$

COZ042-044>046-048>051-141045-
/O.CON.KBOU.BZ.W.0003.000000T0000Z-190314T1800Z/
Briggsdale-Fort Morgan-Byers-Limon-Sterling-Akron-Julesburg-
Holyoke-
Including the cities of Briggsdale, Grover, Pawnee Buttes, 
Raymer, Stoneham, Brush, Fort Morgan, Goodrich, Wiggins, Bennett,
Byers, Deer Trail, Leader, Agate, Hugo, Limon, Matheson, Crook, 
Merino, Sterling, Peetz, Akron, Cope, Last Chance, Otis, 
Julesburg, Ovid, Sedgwick, Amherst, Haxtun, and Holyoke
840 PM MDT Wed Mar 13 2019

...BLIZZARD WARNING REMAINS IN EFFECT UNTIL NOON MDT THURSDAY...

* WHAT...Blizzard conditions. Additional snow accumulations of up
  to two inches. Winds gusting as high as 60 mph.

* WHERE...Most of east central and northeast plains of Colorado.

* WHEN...Until noon MDT Thursday.

* ADDITIONAL DETAILS...Many roads are closed. Widespread blowing
  snow will significantly reduce visibility. The hazardous
  conditions could impact the morning commute.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Blizzard Warning means severe winter weather conditions are
expected or occurring. Falling and blowing snow with strong winds
and poor visibilities are likely. This will lead to whiteout
conditions, making travel extremely dangerous. Do not travel. If
you must travel, have a winter survival kit with you. If you get
stranded, stay with your vehicle. 

The latest road conditions for the state you are calling from can
be obtained by calling 5 1 1.

&&

$$

COZ038-043-140600-
/O.CON.KBOU.BZ.W.0003.000000T0000Z-190314T0600Z/
Fort Collins-Greeley-
Including the cities of Fort Collins, Hereford, Loveland, Nunn, 
Eaton, Fort Lupton, Greeley, and Roggen
840 PM MDT Wed Mar 13 2019

...BLIZZARD WARNING REMAINS IN EFFECT UNTIL MIDNIGHT MDT
TONIGHT...

* WHAT...Blizzard conditions. Additional snow accumulations of up
  to one inch. Winds gusting as high as 50 mph.

* WHERE...Greeley and I-25 near the Wyoming border.

* WHEN...Until midnight MDT tonight.

* ADDITIONAL DETAILS...Some roads remain closed, especially near
  the Wyoming border. Fort Collins and Loveland will see much
  improved weather. Widespread blowing snow could significantly
  reduce visibility

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Blizzard Warning means severe winter weather conditions are
expected or occurring. Falling and blowing snow with strong winds
and poor visibilities are likely. This will lead to whiteout
conditions, making travel extremely dangerous. Do not travel. If
you must travel, have a winter survival kit with you. If you get
stranded, stay with your vehicle. 

The latest road conditions for the state you are calling from can
be obtained by calling 5 1 1.

&&

$$

COZ030>034-141045-
/O.CON.KBOU.WW.Y.0018.000000T0000Z-190314T1200Z/
North Park-Rabbit Ears Pass-
Grand and Summit Counties Below 9000 Feet-
Rocky Mountain National Park and the Medicine Bow Range-
The Mountains of Summit County, the Mosquito Range, and the
Indian Peaks-
Including the cities of Gould, North Park, Rand, Spicer, Walden, 
East Slopes Park and Northern Gore Ranges, Gore Pass, 
Rabbit Ears Pass, Dillon, Fraser, Granby, Grand Lake, 
Hot Sulphur Springs, Kremmling, Cameron Pass, 
Laramie and Medicine Bow Mountains, Rabbit Ears Range, 
Rocky Mountain National Park, Willow Creek Pass, Berthoud Pass, 
Breckenridge, East Slopes Mosquito Range, 
East Slopes Southern Gore Range, Eisenhower Tunnel, Indian Peaks,
Kenosha Mountains, Mount Evans, Williams Fork Mountains, 
and Winter Park
840 PM MDT Wed Mar 13 2019

...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 6 AM MDT
THURSDAY...

* WHAT...Snow. Additional snow accumulations of 1 to 3 inches. 
  Winds gusting as high as 50 mph.

* WHERE...The Mountains of Summit County, the Mosquito Range, 
  and the Indian Peaks, Rabbit Ears Pass, North Park, Rocky 
  Mountain National Park and the Medicine Bow Range and Grand 
  and Summit Counties Below 9000 Feet.

* WHEN...Until 6 AM MDT Thursday.

* ADDITIONAL DETAILS...Plan on slippery road conditions. Patchy
  blowing snow could significantly reduce visibility. The cold 
  wind chills as low as 20 below zero could cause frostbite on 
  exposed skin in as little as 30 minutes.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Winter Weather Advisory for snow means periods of snow will
cause primarily travel difficulties. Expect snow covered roads
and limited visibilities, and use caution while driving. 

The latest road conditions for the state you are calling from can
be obtained by calling 5 1 1.

&&

$$

What forecasters said that day

The local office's own words before this winter storm warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

NWS Denver/Boulder, CO wrote its last area forecast discussion before this winter storm warning went out at Mar 12, 3:32 AM MDT, 7 hours 23 minutes earlier.

Area forecast discussion, Mar 12, 3:32 AM MDT, 7 hours 23 minutes before
Area Forecast Discussion
National Weather Service Denver/Boulder CO
332 AM MDT Tue Mar 12 2019

.SHORT TERM...(Today and tonight)
Issued at 320 AM MDT Tue Mar 12 2019

Today will be the calm before the storm with noticeably warmer
temperatures on the plains this afternoon. The big upcoming storm
is currently spinning over northern Baja with a resultant
southwest flow aloft over Colorado. There is a chunk of moisture
lifting northward over the area with a few showers over southern
and eastern sections of the forecast area this morning. At the
surface there is a light, yet moist south to southeast low level
flow and has resulted in some low clouds/patchy fog over the far
northeast plains.

The upper low will begin to track northeast today and into
central Arizona by early this evening. There will be some increase
in moisture by late in the day but QG ascent is still fairly
weak. The airmass will become slightly unstable and even a few
thunderstorms are possible over the mountains and eastern plains. As
the upper low approaches far south central Colorado later
tonight, moisture and QG ascent will be increasing over much of
Colorado. This will continue to increase chances of precipitation
especially later tonight. 700mb temperatures will remain above
zero on the plains tonight, so any precipitation will fall as
rain. Have delayed the start of the winter storm watch in the
mountains/northern Front Range foothills until 12z Wednesday as
any snowfall tonight will be under 3 inches.

.LONG TERM...(Wednesday through Monday)
Issued at 320 AM MDT Tue Mar 12 2019

A deep trough currently centered over Baja California will move
northeastward onto the central Great Plains by midday Wednesday.
During this time, a coupled jet will setup in the upper levels
with northeast Colorado being under the right entrance region of a
jet over Wyoming and Montana and the left exit region of a jet
over Kansas and Oklahoma. Models show great upper level divergence
and QG ascent from Wednesday morning through Wednesday evening.
At the low to mid levels, warm air advection will help to lower
surface pressures before strong lee cyclogenesis develops late
Tuesday night across southeast Colorado. During the day on
Wednesday, a TROWAL will develop to the northwest side of the
cyclone and this will help bring moderate to heavy precipitation
to north central and northeast Colorado. One feature of note that
is important to the development of this system, is the secondary
trough that is currently off the coast of Oregon. This trough has
colder air associated with it and the injection of this cold air
is critical in that it will help to deepen and amplify the main
trough, further strengthening this storm. It is also important
because it will be the key factor in changing the precip type over
northeast Colorado from rain to snow during the day Wednesday.
One of the biggest question marks with this system is the timing,
location, and strength of this low to mid level cold air. Right
now, it appears the Denver metro and surrounding areas will see
this transition from rain to snow between 15-18Z. If it gets into
north central and northeast Colorado faster than predicted, it
will likely mean that there will be a quicker transition to snow
and, therefore, higher snowfall totals. If it gets into the region
slower, more rain may occur.

To put this storm into perspective, the NAEFS and GEFS both show the
MSLP across southeast Colorado and Kansas to be at the minimum
pressure for all hours in the climate database. The climate
databases include 30-year (NAEFS) and 27-year (GEFS) period of
records. In addition, a tweet from the Dodge City, KS office
mentioned that they will be close to setting an all time record
low surface pressure with at least a 140 year period of record. A
quick look at the SPC sounding climatology page revealed that
Denver (DNR) may set a record low 700-mb height, among other
noteworthy records, depending on the exact track of the low
pressure system. Point being, this storm is quite an anomaly and
forecast models may be subject to more errors and worse forecasts
compared to more normal conditions. It is something to keep in
mind for those forecasting this storm.

With that being said, global models have been consistent with
this storm and are generally in good overall agreement. They
differ on the exact location of the heaviest band of precip but
that may be difficult to forecast until a couple hours before the
event. Convection allowing models also show the potential for very
heavy banding and they disagree on the location the heaviest
bands as well. Some models indicate that there will be a
considerable amount of downslope flow over the foothills and
western urban corridor that will shutoff the snowfall by Wednesday
afternoon. Judging by the position of the low in southeastern
Colorado, it seems fair that this downslope flow will occur so I
have decreased the QPF and snow amounts in this area. With the
uncertainty with regards to the potential for downslope flow and
the slight decrease in snow amounts across the this area, we have
decided to keep the Winter Storm Watch. With the onset of the
snow still over 30 hour out from the time this discussion was
written, there's still enough time to consider more data and
model runs to then make a decision. It is important to note that
this does not change the message. Those expecting to travel during
the late morning through the early evening should expect
dangerous travel conditions and should reconsider travel if
possible. QPF and snowfall amounts were kept roughly the same or
increased from the Palmer Divide to the northeast plains. Blizzard
conditions still appear likely there.

The part of the forecast with the highest confidence is the strong
wind gusts of up to 75 mph that will occur on the eastern plains.
This is due to the tight pressure gradient and strong boundary
layer winds of above 60 knots that will likely be brought down to
the surface in the heaviest snow showers. Sustained winds and
gusts were both increased mainly east of I-25.

Some light snow will linger in the mountains on Thursday but the
rest of the extended forecast will see mainly dry conditions with
below normal temperatures.

&&

.AVIATION...(For the 06Z TAFS through 06Z Tuesday night)
Issued at 320 AM MDT Tue Mar 12 2019

VFR with varying amounts of middle and high level moisture through
the middle of the afternoon. Expect scattered showers to develop
late in the day and through the evening as the upper low moves
closer to Colorado from the southwest. Expect IFR conditions to
develop later tonight as more widespread rain showers develop.

Strong winter storm is expected to the hit the local terminals on
Wednesday. Rain is expected to change to snow 15Z- 17Z Wednesday.
Heavy snow, strong winds, and blowing snow are expected at KDEN
and the Denver area after 18Z Wednesday. An extended period of
visibilities less than a quarter mile are expected Wednesday
afternoon and early evening.

&&

.BOU WATCHES/WARNINGS/ADVISORIES...
Blizzard Warning from noon Wednesday to 6 AM MDT Thursday for
COZ041-042-044>046-048>051.

Winter Storm Watch from Wednesday morning through Wednesday
evening for COZ033>035.

Winter Storm Watch from Wednesday afternoon through Wednesday
evening for COZ036-038>040-043.

High Wind Warning from noon Wednesday to 6 AM MDT Thursday for
COZ047.

&&

SHORT TERM...Entrekin
LONG TERM...Danielson
AVIATION...Entrekin
Hazardous weather outlook, Mar 12, 4:24 AM MDT, 6 hours 31 minutes before
Hazardous Weather Outlook
National Weather Service Denver/Boulder CO
424 AM MDT Tue Mar 12 2019

COZ030>051-131030-
Jackson County Below 9000 Feet-
West Jackson and West Grand Counties Above 9000 Feet-
Grand and Summit Counties Below 9000 Feet-
South and East Jackson/Larimer/North and Northeast Grand/
Northwest Boulder Counties Above 9000 Feet-
South and Southeast Grand/West Central and Southwest Boulder/
Gilpin/Clear Creek/Summit/North and West Park Counties Above
9000 Feet-Larimer and Boulder Counties Between 6000 and 9000 Feet-
Jefferson and West Douglas Counties Above 6000 Feet/Gilpin/Clear
Creek/Northeast Park Counties Below 9000 Feet-
Central and Southeast Park County-
Larimer County Below 6000 Feet/Northwest Weld County-
Boulder And Jefferson Counties Below 6000 Feet/West Broomfield
County-
North Douglas County Below 6000 Feet/Denver/West Adams and
Arapahoe Counties/East Broomfield County-
Elbert/Central and East Douglas Counties Above 6000 Feet-
Northeast Weld County-Central and South Weld County-Morgan County-
Central and East Adams and Arapahoe Counties-
North and Northeast Elbert County Below 6000 Feet/North Lincoln
County-
Southeast Elbert County Below 6000 Feet/South Lincoln County-
Logan County-Washington County-Sedgwick County-Phillips County-
424 AM MDT Tue Mar 12 2019

...Blizzard Conditions likely over the northeast and east central
Plains Wednesday afternoon and Wednesday night...

This hazardous weather outlook is for northeast and north central
Colorado.

.DAY ONE...Today and Tonight

There will be a chance of snow showers in the north central
mountains today and this evening with a slight chance of rain
showers in the foothills, across the Palmer Divide, and over the
near by plains. Any snow accumulation in the mountains will be on
the light side today. An isolated thunderstorm could occur as
well. There will be a gradual increase in shower activity
overnight tonight in advance of the upcoming storm system.
Temperatures will be warm enough for showers to remain as rain
across the plains.

.DAYS TWO THROUGH SEVEN...Wednesday through Monday

A strong storm system with heavy snow and very strong winds will affect
the forecast area Wednesday into Thursday morning. The combination
of the low visibilities in the heavy snow and strong winds will
create blizzard conditions over the plains of eastern Colorado
Wednesday afternoon into Thursday morning. For the urban corridor,
snowfall amounts will be lighter but near blizzard conditions will
still be possible with hazardous travel conditions Wednesday
afternoon and evening. The mountains will see moderate to heavy
snowfall amounts from this system. By mid Thursday into early next
week, dry weather is expected for the forecast area with below
normal temperatures.

.SPOTTER INFORMATION STATEMENT...

Spotter activation will not be needed today or tonight.

Nearby

Winter Storm Warnings in Colorado, 2019Every winter storm warning in 2019

Sources

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.