Winter Storm Warning 5, NWS Denver/Boulder, CO

331 
WWUS45 KBOU 200323
WSWBOU

URGENT - WINTER WEATHER MESSAGE
National Weather Service Denver CO
923 PM MDT Thu Apr 19 2018

...HEAVY SNOW EXPECTED IN THE MOUNTAINS FRIDAY AND FRIDAY NIGHT...

.A spring storm system is expected to move across Colorado Friday
and Friday night. The Colorado mountains will see the highest 
impact from this storm with snow expected to become heavy at times
Friday afternoon and evening. Embedded thunderstorms during the 
afternoon may help produce the heavier snow amounts. Snow levels
will gradually lower through the Front Range Foothills Friday
night. Light to moderate snow will continue falling through late 
Friday night as the storm progresses eastward. The storm is 
expected to be moving out of the state Saturday morning, with 
precipitation in the mountains decreasing to scattered snow 
showers.

COZ033-034-201200-
/O.CON.KBOU.WS.W.0005.180420T1200Z-180421T1800Z/
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
923 PM MDT Thu Apr 19 2018

...WINTER STORM WARNING REMAINS IN EFFECT FROM 6 AM FRIDAY TO
NOON MDT SATURDAY...

* WHAT...Heavy snow expected. Total snow accumulations of 6 to 12
  inches, with localized amounts up to 16 inches, are expected.
  Embedded thunderstorms will produce bursts of very heavy
  snowfall Friday afternoon into early Friday evening. 

* 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 AM Friday to noon MDT Saturday.

* ADDITIONAL DETAILS...Plan on difficult travel conditions, 
  including during the evening commute on Friday. Expect 
  significant reductions in visibility at times.

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.

&&

$$

COZ031-201200-
/O.CON.KBOU.WW.Y.0024.180420T1200Z-180421T1800Z/
Rabbit Ears Pass-
Including the cities of East Slopes Park and Northern Gore
Ranges, Gore Pass, and Rabbit Ears Pass
923 PM MDT Thu Apr 19 2018

...WINTER WEATHER ADVISORY REMAINS IN EFFECT FROM 6 AM FRIDAY TO
NOON MDT SATURDAY...

* WHAT...Snow expected. Total snow accumulations of 4 to 8 
  inches, with localized amounts up to 11 inches, are expected.

* WHERE...Rabbit Ears Pass.

* WHEN...From 6 AM Friday to noon MDT Saturday.

* ADDITIONAL DETAILS...Plan on difficult travel conditions, 
  including during the evening commute on Friday. Expect reduced 
  visibilities at times.

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.

&&

$$

COZ035-036-201200-
/O.CON.KBOU.WW.Y.0024.180420T1200Z-180421T1800Z/
The Northern Front Range Foothills-
The Southern Front Range Foothills-
Including the cities of Estes Park, Glendevey, Nederland, 
Red Feather Lakes, Bailey, Central City, Evergreen, Georgetown, 
Idaho Springs, and Westcreek
923 PM MDT Thu Apr 19 2018

...WINTER WEATHER ADVISORY REMAINS IN EFFECT FROM 6 AM FRIDAY TO
NOON MDT SATURDAY...

* WHAT...Snow expected. Total snow accumulations of 3 to 7 
  inches, with localized amounts up to 10 inches, are expected. 
  Rain and snow will develop Friday and become heavier Friday 
  afternoon and evening. The snow level will lower from around 
  7500-8000 feet Friday afternoon down to 6000 feet Friday 
  evening. 

* WHERE...The Northern Front Range Foothills and The Southern 
  Front Range Foothills.

* WHEN...From 6 AM Friday to noon MDT Saturday.

* ADDITIONAL DETAILS...Plan on slippery road conditions, 
  including during the evening commute on Friday. Expect reduced 
  visibilities at times.

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.

&&

$$

314 
WWUS45 KBOU 201032
WSWBOU

URGENT - WINTER WEATHER MESSAGE
National Weather Service Denver CO
432 AM MDT Fri Apr 20 2018

...SNOW IN THE MOUNTAINS THROUGH TONIGHT...

.A storm system will move across Colorado from west to east
through tonight. The Colorado mountains will see the highest 
impact from this storm with snow expected to become heavy at times
Friday afternoon and evening. Embedded thunderstorms during the 
afternoon may help produce the heavier snow amounts. The foothills
will see a mixture of rain and snow during the day Friday, with
accumulations above about 7500 feet. The snow levels will 
lower Friday afternoon and evening, bringing a mix of rain and
snow as low as the Denver area overnight. The storm will move out
of the state Saturday morning, with precipitation in the 
mountains decreasing to scattered snow showers.

COZ033-034-201845-
/O.CON.KBOU.WS.W.0005.180420T1200Z-180421T1800Z/
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
432 AM MDT Fri Apr 20 2018

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

* WHAT...Heavy snow expected. Total snow accumulations of 6 to 
  10 inches, with localized amounts up to 15 inches, are 
  expected.

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

* WHEN...Until noon MDT Saturday. The heaviest snow will likely be
  Friday afternoon and evening.

* ADDITIONAL DETAILS...Plan on difficult travel conditions,
  including during the evening commute. Roads will become slushy
  or snowpacked during the periods of heavier snow. Expect 
  significant reductions in visibility at times.

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.

&&

$$

COZ031-201845-
/O.CON.KBOU.WW.Y.0024.180420T1200Z-180421T1800Z/
Rabbit Ears Pass-
Including the cities of East Slopes Park and Northern Gore
Ranges, Gore Pass, and Rabbit Ears Pass
432 AM MDT Fri Apr 20 2018

...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL NOON MDT
SATURDAY...

* WHAT...Snow expected. Total snow accumulations of 4 to 8 
  inches, with localized amounts up to 11 inches, are expected.

* WHERE...Rabbit Ears Pass.

* WHEN...Until noon MDT Saturday. The heaviest snow will likely be
  Friday afternoon and evening.

* ADDITIONAL DETAILS...Plan on difficult travel conditions,
  including during the evening commute. Roads will become slushy
  during the periods of heavier snow. Expect reduced visibilities
  at times.

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.

&&

$$

COZ035-036-201845-
/O.CON.KBOU.WW.Y.0024.180420T1200Z-180421T1800Z/
The Northern Front Range Foothills-
The Southern Front Range Foothills-
Including the cities of Estes Park, Glendevey, Nederland, 
Red Feather Lakes, Bailey, Central City, Evergreen, Georgetown, 
Idaho Springs, and Westcreek
432 AM MDT Fri Apr 20 2018

...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL NOON MDT
SATURDAY...

* WHAT...Snow expected. Total snow accumulations of 2 to 4 inches
  are expected, with up to 8 inches above 7500 feet.

* WHERE...The Northern Front Range Foothills and The Southern 
  Front Range Foothills.

* WHEN...Until noon MDT Saturday. The heaviest snow will likely be
  Friday afternoon and evening.

* ADDITIONAL DETAILS...Plan on slippery road conditions. Roads
  will become slushy during periods of heavier snowfall. Expect 
  reduced visibilities at times.

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/Cooper

585 
WWUS45 KBOU 201829
WSWBOU

URGENT - WINTER WEATHER MESSAGE
National Weather Service Denver CO
1229 PM MDT Fri Apr 20 2018

...SNOW IN THE MOUNTAINS THROUGH TONIGHT...

.A storm system will move across Colorado from west to east
through tonight. The Colorado mountains will see the highest
impact from this storm with snow expected to become heavy at
times this afternoon and evening. Embedded thunderstorms through
the afternoon will help to produce periods of heavier snowfall. 
The foothills will see a mixture of rain and snow during the day,
with accumulations mainly above about 7000 feet. The snow levels 
will lower Friday afternoon and evening, bringing a mix of rain 
and snow as low as the Denver area overnight tonight. The storm 
will move out of the state by late Saturday afternoon, with 
precipitation in the mountains decreasing to scattered snow 
showers.

COZ033-034-210630-
/O.CON.KBOU.WS.W.0005.000000T0000Z-180421T1800Z/
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
1229 PM MDT Fri Apr 20 2018

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

* WHAT...Heavy snow. Snow accumulations of 5 to 9 inches, with 
  localized amounts up to 14 inches, are expected.

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

* WHEN...Until noon MDT Saturday.

* ADDITIONAL DETAILS...Plan on difficult travel conditions, 
  including during the evening commute. Expect significant 
  reductions in visibility at times.

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.

&&

$$

COZ031-210630-
/O.CON.KBOU.WW.Y.0024.000000T0000Z-180421T1800Z/
Rabbit Ears Pass-
Including the cities of East Slopes Park and Northern Gore
Ranges, Gore Pass, and Rabbit Ears Pass
1229 PM MDT Fri Apr 20 2018

...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL NOON MDT
SATURDAY...

* WHAT...Snow. Accumulations of 3 to 7 inches, with localized 
  amounts up to 9 inches, are expected.

* WHERE...Rabbit Ears Pass.

* WHEN...Until noon MDT Saturday.

* ADDITIONAL DETAILS...Plan on slippery road conditions, 
  including during the evening commute. Expect reduced 
  visibilities at times.

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.

&&

$$

COZ035-036-210630-
/O.CON.KBOU.WW.Y.0024.000000T0000Z-180421T1800Z/
The Northern Front Range Foothills-
The Southern Front Range Foothills-
Including the cities of Estes Park, Glendevey, Nederland, 
Red Feather Lakes, Bailey, Central City, Evergreen, Georgetown, 
Idaho Springs, and Westcreek
1229 PM MDT Fri Apr 20 2018

...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL NOON MDT
SATURDAY...

* WHAT...Snow. Accumulations of 3 to 6 inches, with localized 
  amounts up to 8 inches, are expected.

* WHERE...The Northern Front Range Foothills and The Southern 
  Front Range Foothills.

* WHEN...Until noon MDT Saturday.

* ADDITIONAL DETAILS...Plan on slippery road conditions. Expect 
  reduced visibilities at times.

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.

&&

$$

685 
WWUS45 KBOU 210100
WSWBOU

URGENT - WINTER WEATHER MESSAGE
National Weather Service Denver CO
700 PM MDT Fri Apr 20 2018

...SNOW IN THE MOUNTAINS...AND RAIN MIXING WITH OR CHANGING TO
SNOW ON THE PLAINS THROUGH EARLY SATURDAY MORNING...

.A storm system will move across Colorado from west to east
through tonight. The Colorado mountains will see the highest
impact from this storm with snow showers producing heavy snow at
times. The foothills will see a mixture of rain and snow turning
to all snow tonight. On the plains, snow levels will lower to
around 5000 feet late tonight into early Saturday, but any 
accumulation is expected to be on the light side and mostly 
confined to grassy surfaces. The storm will move out of the state 
Saturday afternoon, with precipitation gradually decreasing to 
scattered showers. 

COZ033-034-210900-
/O.CAN.KBOU.WS.W.0005.000000T0000Z-180421T1800Z/
/O.EXA.KBOU.WW.Y.0024.000000T0000Z-180421T1800Z/
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
700 PM MDT Fri Apr 20 2018

...WINTER WEATHER ADVISORY IN EFFECT UNTIL NOON MDT SATURDAY...
...WINTER STORM WARNING IS CANCELLED...

* WHAT...Periods of snow. Additional snow accumulations of 2 to 6
  inches are expected.

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

* WHEN...Until noon MDT Saturday.

* ADDITIONAL DETAILS...Plan on slippery road conditions. Expect 
  reduced visibilities at times.

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.

&&

$$

COZ031-210900-
/O.CON.KBOU.WW.Y.0024.000000T0000Z-180421T1800Z/
Rabbit Ears Pass-
Including the cities of East Slopes Park and Northern Gore
Ranges, Gore Pass, and Rabbit Ears Pass
700 PM MDT Fri Apr 20 2018

...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL NOON MDT
SATURDAY...

* WHAT...Periods of snow. Additional snow accumulations of 1 to 3
  inches are expected.

* WHERE...Rabbit Ears Pass.

* WHEN...Until noon MDT Saturday.

* ADDITIONAL DETAILS...Plan on slippery road conditions. Expect 
  reduced visibilities at times.

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.

&&

$$

COZ035-036-210900-
/O.CON.KBOU.WW.Y.0024.000000T0000Z-180421T1800Z/
The Northern Front Range Foothills-
The Southern Front Range Foothills-
Including the cities of Estes Park, Glendevey, Nederland, 
Red Feather Lakes, Bailey, Central City, Evergreen, Georgetown, 
Idaho Springs, and Westcreek
700 PM MDT Fri Apr 20 2018

...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL NOON MDT
SATURDAY...

* WHAT...Periods of snow. Additional snow accumulations of 2 to 5
  inches are expected.

* WHERE...The Northern Front Range Foothills and The Southern 
  Front Range Foothills.

* WHEN...Until noon MDT Saturday.

* ADDITIONAL DETAILS...Plan on slippery road conditions. Expect 
  reduced visibilities at times.

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.

&&

$$

Area Forecast Discussion
National Weather Service Denver/Boulder CO
248 PM MDT Thu Apr 19 2018

.SHORT TERM...(This evening through Friday)
Issued at 237 PM MDT Thu Apr 19 2018

Upper level low over California and Nevada will track east the
next 24 hours and be centered over Colorado Friday afternoon.
Surface low pressure over the Great Basin will continue to bring
gusty south- southeast winds to the eastern plains tonight with
gusts to 45 mph. The gusty winds will result in mild overnight
lows for many places. Models are in good agreement showing the
left exit region of the jet producing an area of showers over far
eastern Colorado late tonight and Friday morning. A second of area
of precipitation is expected over the Central Colorado tonight
due to diffluence aloft ahead of the approaching upper level low.

South-southeast surface winds continue into Friday as the surface
low and upper level low near the region. This will pump moisture
into the area. Clouds will thicken and lower through the day due
to the increasing moisture and lift. Expect QG ascent to bring
rain and snow to much of the area Friday afternoon. Will upgrade
the Winter Storm Watch to a Warning for the mountains. Snowfall
amounts are marginal for warning criteria. However models indicate
airmass over the mountains becomes unstable with CAPE up to 500
J/kg. Because of this, will go with the warning with some areas
seeing a quick round of heavy snow. Tougher call on how much snow
will fall in the foothills. Snow level starts off high, around
8500 feet and lowers during the afternoon. Period of northeast
upslope winds is short and not that strong, so will go with a
Winter Weather Advisory for the the foothills.

.LONG TERM...(Friday night through Thursday)
Issued at 237 PM MDT Thu Apr 19 2018

For Friday night into Saturday the low pressure system will be in
place over Colorado and stacked through 300 mb. At this time
confidence is high that the mountains and higher foothills will see
decent snow accumulations into Saturday evening. However,
temperature profiles on the plains continue to be tricky. Latest GFS
continues to be on the warmer side with the NAM as the outlier on
the cold side. The 00z EC is in the middle so will most likely lean
to this solution. A surface low to the south over NM will move
eastward increasing NE flow over the plains and keeping much of the
NE region under the deformation zone. This set-up combined with the
stacked and slower low progression could keep precipitation falling
into Saturday evening. At this time QPF totals through 18z Saturday
for the Urban corridor and east are between three quarters of a inch
up to an inch on the EC with less over the east side of DIA and
increasing as you go toward the KS border with the help of increased
lift. Wet bulb zero levels show a decreasing trend after 00z Saturday
with the EC dropping between 5800 and 6000 by 12z Saturday. Between
03 and 06z the cold push from the NE will reach back to the
foothills that will help to cool and saturate the column through 300
mb. Models are indicating cold air damming against the northern
foothills that could significantly add to snow amounts in this area
through Saturday morning. By 18z Saturday the low pressure system
will start to transition to the SE over the TX panhandle while
maintaining the def zone over the east and NE portions of the state.
This will continue light to moderate snowfall into the afternoon
hours. As the storm transitions east-southeastward increasing
subsidence behind it with WAA increasing. This will help to clear
out conditions by the later afternoon hours on Saturday helping to
push daytime temperatures on the plains into the upper 40s to low
50s.

For Sunday into Monday upper level ridging will increase helping to
warm areas back into the 60s with 70s possible by Monday. By Monday
night a shortwave will skirt over the northern portion of the state
bringing snow to the mountains with a slight chance of rain to the
NE plains by early Tuesday morning. The active NW pattern will
continue through mid week bringing additional chances of
precipitation to the region.

&&

.AVIATION...(For the 18Z TAFS through 18Z Friday afternoon)
Issued at 237 PM MDT Thu Apr 19 2018

VFR conditions will prevail through tonight. Low clouds move in
Friday morning, after 15Z with ceilings falling to 3000 to 6000
feet. Ceilings will continue to lower aftet 18Z, with rain likely.
South-southeast winds will continue through tonight. Wind speeds
will increase late this afternoon and evening, with gusts of 30-40
knots at KDEN/KAPA, 22-08z. Winds will be much weaker at KBJC and
generally be northerly.

&&

.FIRE WEATHER...
Issued at 237 PM MDT Thu Apr 19 2018

Gusty south-southeast winds continue east of I-25 through this
afternoon and tonight. The strongest winds are expected late this
afternoon and this evening. Relative humidities will fall into the
lower to mid teens late this afternoon. Will allow the Red Flag
Warning expire early this evening as relative humidities slowly
climb. However, overnight relative humdity recovery will be poor
tonight due to the windy conditions.

&&

.BOU WATCHES/WARNINGS/ADVISORIES...
Red Flag Warning until 8 PM MDT this evening for COZ214-216-
240>247.

Winter Weather Advisory from 6 AM Friday to noon MDT Saturday
for COZ031-035-036.

Winter Storm Warning from 6 AM Friday to noon MDT Saturday for
COZ033-034.

&&

SHORT TERM...Meier
LONG TERM...Bowen
AVIATION...Meier
FIRE WEATHER...Meier

Hazardous Weather Outlook
National Weather Service Denver/Boulder CO
1115 AM MDT Thu Apr 19 2018

COZ030>051-201715-
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-
1115 AM MDT Thu Apr 19 2018

...Red Flag Warnings 11 am this morning until 8 pm mdt this
evening, Denver Metro area, Palmer Divide, South Park, southern
Foothills and parts of the northeast and east central Plains...

...Winter Storm Watch in effect Friday afternoon through Saturday
morning for the Front Range Mountains and Foothills...

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

.DAY ONE...This Afternoon and Tonight

Strong south winds will develop over the plains today ahead of an
approaching storm system. Gusts of 30 to 40 mph will be common by
midday, with gusts to 50 mph possible. The winds will combine with
low humidities to produce very high fire danger from southeastern
Colorado north to Denver, Greeley, and Fort Morgan. While
humidities will improve this evening, the strong winds will
continue overnight. Scattered rain and snow showers will develop
in the mountains overnight, with some higher mountain areas
receiving a couple inches of snow by morning.

.DAYS TWO THROUGH SEVEN...Friday through Wednesday

A spring storm will move out of Utah and across Colorado Friday
into Saturday. As a result, widespread precipitation is expected
through Saturday morning. Snow, heavy at times will be possible in
the Front Range Mountains and Foothills. Storm totals in those
areas may range from 8 to 12 inches with some areas seeing up to
18 inches by Saturday afternoon, with lesser amounts expected
over the Palmer Divide. Elsewhere across the northeast plains,
rain turning over to a mix of rain and snow then possibly to a
wet snow by late Friday will continue through Saturday morning. At
this time some light accumulation is possible, mostly on grassy
surfaces.

The storm system will exit the region by Saturday afternoon,
followed by a warmer and drier pattern for Sunday and Monday. The
next chance of precipitation for the region will be on Tuesday.

.SPOTTER INFORMATION STATEMENT...

Spotter activation will not be needed today or tonight.