Blizzard Warning 1, NWS Denver/Boulder, CO

585 
WWUS45 KBOU 031851
WSWBOU

URGENT - WINTER WEATHER MESSAGE
National Weather Service Denver CO
1151 AM MST Mon Mar 3 2025

COZ041-040500-
/O.UPG.KBOU.WS.W.0005.250304T0300Z-250304T1900Z/
/O.EXB.KBOU.BZ.W.0001.250304T0700Z-250304T2100Z/
Elbert/Central and East Douglas Counties Above 6000 Feet-
Including the cities of Kiowa, Elbert, Larkspur, Castle Rock, and
Fondis
1151 AM MST Mon Mar 3 2025

...BLIZZARD WARNING IN EFFECT FROM MIDNIGHT TONIGHT TO 2 PM MST 
TUESDAY...

* WHAT...Blizzard conditions expected. Total snow accumulations 
  between 4 and 10 inches. Winds gusting as high as 60 mph.

* WHERE...Castle Rock.

* WHEN...From midnight tonight to 2 PM MST Tuesday.

* IMPACTS...Travel is expected to become very difficult to 
  impossible due to heavy snowfall, drifting snow, and low 
  visibility. Road closures will be possible. Conditions will be 
  worst from late tonight into Tuesday morning.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Consider avoiding travel during this storm. If you must travel, have 
a winter survival kit with you. If you get stranded, stay with your 
vehicle. The latest road conditions for Colorado can be obtained by 
calling 5 1 1 or by going to www.cotrip.org.

For the latest travel conditions from the Colorado Department of 
Transportation, including road conditions, road closures, and 
traction laws in effect, go to cotrip.org.

&&

$$

COZ045-040500-
/O.UPG.KBOU.WS.A.0003.250304T0300Z-250305T0000Z/
/O.EXB.KBOU.BZ.W.0001.250304T0700Z-250304T2100Z/
Central and East Adams and Arapahoe Counties-
Including the cities of Leader, Byers, Deer Trail, and Bennett
1151 AM MST Mon Mar 3 2025

...BLIZZARD WARNING IN EFFECT FROM MIDNIGHT TONIGHT TO 2 PM MST 
TUESDAY...

* WHAT...Blizzard conditions expected. Total snow accumulations 2 to 
  8 inches. Winds gusting as high as 60 mph.

* WHERE...Byers.

* WHEN...From midnight tonight to 2 PM MST Tuesday.

* IMPACTS...Travel is expected to become very difficult to 
  impossible due to heavy snowfall, drifting snow, and low 
  visibility. Road closures will be possible.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Make alternate travel plans as road closures are likely. If you must 
travel, have a winter survival kit with you. If you get stranded, 
stay with your vehicle. The latest road conditions for Colorado can 
be obtained by calling 5 1 1 or by going to www.cotrip.org.

For the latest travel conditions from the Colorado Department of 
Transportation, including road conditions, road closures, and 
traction laws in effect, go to cotrip.org.

&&

$$

COZ046-049-040500-
/O.CON.KBOU.BZ.W.0001.250304T0600Z-250305T0000Z/
North and Northeast Elbert County Below 6000 Feet/North Lincoln
County-Washington County-
Including the cities of Limon, Cope, Last Chance, Hugo, Akron,
Agate, Otis, and Matheson
1151 AM MST Mon Mar 3 2025

...BLIZZARD WARNING REMAINS IN EFFECT FROM 11 PM THIS EVENING TO 5 
PM MST TUESDAY...

* WHAT...Blizzard conditions expected. Total snow accumulations 
  between 2 and 10 inches, heaviest around I-70 and US 36. Winds 
  gusting as high as 65 mph.

* WHERE...Limon, and Akron.

* WHEN...From 11 PM this evening to 5 PM MST Tuesday.

* IMPACTS...Travel is expected to become very difficult to 
  impossible due to heavy snowfall, drifting snow, and low 
  visibility. Road closures are likely.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Alter your travel plans. Heavy snowfall, blowing snow, and poor 
visibility are expected to make travel very difficult to impossible. 
If travel is absolutely necessary, take a winter storm kit along 
with you, including such items as tire chains, booster cables, 
flashlight, shovel, blankets and extra clothing. Also take water, a 
first aid kit, required medications, and anything else that would 
help you survive in case you become stranded. If you become 
stranded, stay with your vehicle and wait for help to arrive.

For the latest travel conditions from the Colorado Department of 
Transportation, including road conditions, road closures, and 
traction laws in effect, go to cotrip.org.

&&

$$

COZ050-051-040500-
/O.CON.KBOU.BZ.W.0001.250304T0900Z-250305T0000Z/
Sedgwick County-Phillips County-
Including the cities of Amherst, Ovid, Holyoke, Sedgwick,
Julesburg, and Haxtun
1151 AM MST Mon Mar 3 2025

...BLIZZARD WARNING REMAINS IN EFFECT FROM 2 AM TO 5 PM MST 
TUESDAY...

* WHAT...Blizzard conditions expected. Total snow accumulations 
  between 2 and 8 inches, with the heaviest amounts in Phillips 
  County. Winds gusting as high as 65 mph.

* WHERE...Julesburg, and Holyoke.

* WHEN...From 2 AM to 5 PM MST Tuesday.

* IMPACTS...Travel is expected to become very difficult to 
  impossible due to heavy snowfall, drifting snow, and low 
  visibility. Road closures will be possible.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Alter your travel plans. Heavy snowfall, blowing snow, and poor 
visibility are expected to make travel very difficult to impossible. 
If travel is absolutely necessary, take a winter storm kit along 
with you, including such items as tire chains, booster cables, 
flashlight, shovel, blankets and extra clothing. Also take water, a 
first aid kit, required medications, and anything else that would 
help you survive in case you become stranded. If you become 
stranded, stay with your vehicle and wait for help to arrive.

For the latest travel conditions from the Colorado Department of 
Transportation, including road conditions, road closures, and 
traction laws in effect, go to cotrip.org.

&&

$$

COZ033-034-040500-
/O.CON.KBOU.WS.W.0005.250303T2200Z-250305T0000Z/
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-
Including the cities of Eisenhower Tunnel, Rabbit Ears Range,
Indian Peaks, Cameron Pass, Williams Fork Mountains, Willow Creek
Pass, Berthoud Pass, Winter Park, Laramie and Medicine Bow
Mountains, East Slopes Mosquito Range, Kenosha Mountains, East
Slopes Southern Gore Range, Breckenridge, Rocky Mountain National
Park, and Mount Blue Sky
1151 AM MST Mon Mar 3 2025

...WINTER STORM WARNING REMAINS IN EFFECT FROM 3 PM THIS AFTERNOON 
TO 5 PM MST TUESDAY...

* WHAT...Heavy snow expected. Total snow accumulations between 8 and 
  16 inches. Winds gusting as high as 65 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 3 PM this afternoon to 5 PM MST Tuesday.

* IMPACTS...Snow and ice covered roads will make travel hazardous, 
  with the possibility of very difficult travel.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Consider altering travel plans during the storm. Travel is expected 
to become very difficult. If you must travel, take a winter storm 
kit along with you, including such items as tire chains, booster 
cables, flashlight, shovel, blankets and extra clothing. Also take 
water, a first aid kit, and anything else that would help you 
survive in case you become stranded.

For the latest travel conditions from the Colorado Department of 
Transportation, including road conditions, road closures, and 
traction laws in effect, go to cotrip.org.

&&

$$

COZ047-040500-
/O.UPG.KBOU.WS.A.0003.250304T0300Z-250305T0000Z/
/O.EXB.KBOU.WW.Y.0015.250304T0600Z-250304T2100Z/
Southeast Elbert County Below 6000 Feet/South Lincoln County-
Including the cities of Karval, Forder, Punkin Center, and Kutch
1151 AM MST Mon Mar 3 2025

...WINTER WEATHER ADVISORY IN EFFECT FROM 11 PM THIS EVENING TO 2 PM 
MST TUESDAY...

* WHAT...Snow expected. Total snow accumulations 1 to 6 inches, 
  lightest south of highway 94. Winds gusting as high as 70 mph.

* WHERE...Southern Lincoln County.

* WHEN...From 11 PM this evening to 2 PM MST Tuesday.

* IMPACTS...Plan on slippery road conditions. Widespread blowing 
  snow could significantly reduce visibility.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Slow down and use caution while traveling. The latest road 
conditions for Colorado can be obtained by calling 5 1 1 or by going 
to www.cotrip.org.

&&

$$

COZ042-048-040500-
/O.UPG.KBOU.WS.A.0003.250304T0600Z-250305T0000Z/
/O.EXB.KBOU.WW.Y.0015.250304T0700Z-250304T2100Z/
Northeast Weld County-Logan County-
Including the cities of Briggsdale, Grover, Stoneham, Raymer,
Merino, Peetz, Crook, Pawnee Buttes, and Sterling
1151 AM MST Mon Mar 3 2025

...WINTER WEATHER ADVISORY IN EFFECT FROM MIDNIGHT TONIGHT TO 2 PM 
MST TUESDAY...

* WHAT...Snow expected. Total snow accumulations 1 to 4 inches. 
  Winds gusting as high as 65 mph.

* WHERE...Briggsdale, and Sterling.

* WHEN...From midnight tonight to 2 PM MST Tuesday.

* IMPACTS...Plan on slippery road conditions. Areas of blowing snow 
  could significantly reduce visibility. Near blizzard conditions 
  are possible in areas with enough snowfall.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Slow down and use caution while traveling. The latest road 
conditions for Colorado can be obtained by calling 5 1 1 or by going 
to www.cotrip.org.

&&

$$

COZ031-040500-
/O.CON.KBOU.WW.Y.0015.000000T0000Z-250305T0000Z/
West Jackson and West Grand Counties Above 9000 Feet-
Including the cities of Mt Zirkel
1151 AM MST Mon Mar 3 2025

...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 5 PM MST 
TUESDAY...

* WHAT...Snow expected. Total snow accumulations between 4 and 10 
  inches. Winds gusting as high as 50 mph.

* WHERE...Rabbit Ears Pass.

* WHEN...Until 5 PM MST Tuesday.

* IMPACTS...Travel could be very difficult.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Slow down and use caution while traveling. The latest road 
conditions for Colorado can be obtained by calling 5 1 1 or by going 
to www.cotrip.org.

&&

$$

For more information from the National Weather Service, visit 
https://weather.gov/bou

Gimmestad

888 
WWUS45 KBOU 040453
WSWBOU

URGENT - WINTER WEATHER MESSAGE
National Weather Service Denver CO
953 PM MST Mon Mar 3 2025

COZ046-049-041300-
/O.CON.KBOU.BZ.W.0001.250304T0600Z-250305T0000Z/
North and Northeast Elbert County Below 6000 Feet/North Lincoln
County-Washington County-
Including the cities of Akron, Last Chance, Otis, Limon,
Matheson, Agate, Hugo, and Cope
953 PM MST Mon Mar 3 2025

...BLIZZARD WARNING REMAINS IN EFFECT UNTIL 5 PM MST TUESDAY...

* WHAT...Blizzard conditions expected. Total snow accumulations 
  between 2 and 8 inches. Winds gusting as high as 70 mph.

* WHERE...Limon, and Akron.

* WHEN...Until 5 PM MST Tuesday.

* IMPACTS...Travel is expected to become very difficult to 
  impossible due to heavy snowfall, drifting snow, and low 
  visibility. Road closures will be possible.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Alter your travel plans. Heavy snowfall, blowing snow, and poor 
visibility are expected to make travel very difficult to impossible. 
If travel is absolutely necessary, take a winter storm kit along 
with you, including such items as tire chains, booster cables, 
flashlight, shovel, blankets and extra clothing. Also take water, a 
first aid kit, required medications, and anything else that would 
help you survive in case you become stranded. If you become 
stranded, stay with your vehicle and wait for help to arrive.

For the latest travel conditions from the Colorado Department of 
Transportation, including road conditions, road closures, and 
traction laws in effect, go to cotrip.org.

&&

$$

COZ041-045-041300-
/O.CON.KBOU.BZ.W.0001.250304T0700Z-250304T2100Z/
Elbert/Central and East Douglas Counties Above 6000 Feet-Central
and East Adams and Arapahoe Counties-
Including the cities of Elbert, Deer Trail, Castle Rock, Leader,
Larkspur, Fondis, Bennett, Kiowa, and Byers
953 PM MST Mon Mar 3 2025

...BLIZZARD WARNING REMAINS IN EFFECT UNTIL 2 PM MST TUESDAY...

* WHAT...Blizzard conditions expected. Total snow accumulations of 1 
  to 6 inches. Winds gusting as high as 60 mph.

* WHERE...Castle Rock, and Byers.

* WHEN...Until 2 PM MST Tuesday.

* IMPACTS...Travel is expected to become very difficult to 
  impossible due to heavy snowfall, drifting snow, and low 
  visibility. Road closures will be possible. Travel could be very 
  difficult. Widespread blowing snow could significantly reduce 
  visibility. The hazardous conditions will impact the Tuesday 
  morning commute.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Travel should be restricted to emergencies only. If you must travel, 
have a winter survival kit with you. If you get stranded, stay with 
your vehicle. The latest road conditions for Colorado can be 
obtained by calling 5 1 1 or by going to www.cotrip.org.

For the latest travel conditions from the Colorado Department of 
Transportation, including road conditions, road closures, and 
traction laws in effect, go to cotrip.org.

&&

$$

COZ050-051-041300-
/O.CON.KBOU.BZ.W.0001.250304T0900Z-250305T0000Z/
Sedgwick County-Phillips County-
Including the cities of Julesburg, Amherst, Ovid, Holyoke,
Haxtun, and Sedgwick
953 PM MST Mon Mar 3 2025

...BLIZZARD WARNING REMAINS IN EFFECT FROM 2 AM TO 5 PM MST 
TUESDAY...

* WHAT...Blizzard conditions expected. Total snow accumulations 
  between 1 and 4 inches. Winds gusting as high as 60 mph.

* WHERE...Julesburg, and Holyoke.

* WHEN...From 2 AM to 5 PM MST Tuesday.

* IMPACTS...Travel is expected to become very difficult to 
  impossible due to heavy snowfall, drifting snow, and low 
  visibility. Road closures will be possible.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Alter your travel plans. Heavy snowfall, blowing snow, and poor 
visibility are expected to make travel very difficult to impossible. 
If travel is absolutely necessary, take a winter storm kit along 
with you, including such items as tire chains, booster cables, 
flashlight, shovel, blankets and extra clothing. Also take water, a 
first aid kit, required medications, and anything else that would 
help you survive in case you become stranded. If you become 
stranded, stay with your vehicle and wait for help to arrive.

For the latest travel conditions from the Colorado Department of 
Transportation, including road conditions, road closures, and 
traction laws in effect, go to cotrip.org.

&&

$$

COZ033-034-041300-
/O.CON.KBOU.WS.W.0005.000000T0000Z-250305T0000Z/
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-
Including the cities of Laramie and Medicine Bow Mountains,
Willow Creek Pass, East Slopes Mosquito Range, Kenosha Mountains,
Rabbit Ears Range, East Slopes Southern Gore Range, Breckenridge,
Eisenhower Tunnel, Williams Fork Mountains, Mount Blue Sky,
Berthoud Pass, Cameron Pass, Indian Peaks, Rocky Mountain
National Park, and Winter Park
953 PM MST Mon Mar 3 2025

...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 5 PM MST TUESDAY...

* WHAT...Heavy snow. Additional snow accumulations between 2 and 8 
  inches. Winds gusting as high as 60 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...Until 5 PM MST Tuesday.

* IMPACTS...Snow and ice covered roads will make travel hazardous, 
  with the possibility of very difficult travel.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Consider altering travel plans during the storm. Travel is expected 
to become very difficult. If you must travel, take a winter storm 
kit along with you, including such items as tire chains, booster 
cables, flashlight, shovel, blankets and extra clothing. Also take 
water, a first aid kit, and anything else that would help you 
survive in case you become stranded.

For the latest travel conditions from the Colorado Department of 
Transportation, including road conditions, road closures, and 
traction laws in effect, go to cotrip.org.

&&

$$

COZ031-041300-
/O.CON.KBOU.WW.Y.0015.000000T0000Z-250305T0000Z/
West Jackson and West Grand Counties Above 9000 Feet-
Including the cities of Mt Zirkel
953 PM MST Mon Mar 3 2025

...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 5 PM MST 
TUESDAY...

* WHAT...Snow. Additional snow accumulations between 1 and 3 inches. 
  Winds gusting as high as 40 mph.

* WHERE...Rabbit Ears Pass.

* WHEN...Until 5 PM MST Tuesday.

* IMPACTS...Plan on slippery road conditions.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Slow down and use caution while traveling. The latest road 
conditions for Colorado can be obtained by calling 5 1 1 or by going 
to www.cotrip.org.

&&

$$

COZ047-041300-
/O.CON.KBOU.WW.Y.0015.250304T0600Z-250304T2100Z/
Southeast Elbert County Below 6000 Feet/South Lincoln County-
Including the cities of Kutch, Forder, Punkin Center, and Karval
953 PM MST Mon Mar 3 2025

...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 2 PM MST 
TUESDAY...

* WHAT...Snow expected. Total snow accumulations up to 2. Winds 
  gusting as high as 65 mph.

* WHERE...Southern Lincoln County.

* WHEN...Until 2 PM MST Tuesday.

* IMPACTS...Plan on slippery road conditions. Widespread blowing 
  snow could significantly reduce visibility. Damage to trees and 
  power lines is possible.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Slow down and use caution while traveling. The latest road 
conditions for Colorado can be obtained by calling 5 1 1 or by going 
to www.cotrip.org.

&&

$$

COZ042-048-041300-
/O.CON.KBOU.WW.Y.0015.250304T0700Z-250304T2100Z/
Northeast Weld County-Logan County-
Including the cities of Peetz, Stoneham, Briggsdale, Pawnee
Buttes, Raymer, Merino, Crook, Sterling, and Grover
953 PM MST Mon Mar 3 2025

...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 2 PM MST 
TUESDAY...

* WHAT...Snow expected. Total snow accumulations up to 2 inches. 
  Winds gusting as high as 70 mph.

* WHERE...Briggsdale, and Sterling.

* WHEN...Until 2 PM MST Tuesday.

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

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Slow down and use caution while traveling. The latest road 
conditions for Colorado can be obtained by calling 5 1 1 or by going 
to www.cotrip.org.

&&

$$

For more information from the National Weather Service, visit 
https://weather.gov/bou

Hiris

724 
WWUS45 KBOU 041010
WSWBOU

URGENT - WINTER WEATHER MESSAGE
National Weather Service Denver CO
310 AM MST Tue Mar 4 2025

COZ041-042100-
/O.CAN.KBOU.BZ.W.0001.000000T0000Z-250304T2100Z/
/O.EXB.KBOU.WW.Y.0015.000000T0000Z-250304T2100Z/
Elbert/Central and East Douglas Counties Above 6000 Feet-
Including the cities of Elbert, Castle Rock, Fondis, Kiowa, and
Larkspur
310 AM MST Tue Mar 4 2025

...BLIZZARD WARNING IS CANCELLED...
...WINTER WEATHER ADVISORY IN EFFECT UNTIL 2 PM MST THIS AFTERNOON...

* WHAT...Blowing snow. Additional snow accumulations between up and 
  2 inches. Winds gusting as high as 65 mph will produce areas of 
  blowing and drifting snow.

* WHERE...Castle Rock.

* WHEN...Until 2 PM MST this afternoon.

* IMPACTS...Snow covered roads will make travel hazardous. Snow and 
  blowing snow will reduce visibility to a quarter mile or less.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Roads will be slick resulting in slow and hazardous travel. Allow 
extra time to reach your destination.

&&

$$

COZ046-042100-
/O.CAN.KBOU.BZ.W.0001.000000T0000Z-250305T0000Z/
/O.EXB.KBOU.WW.Y.0015.000000T0000Z-250304T2100Z/
North and Northeast Elbert County Below 6000 Feet/North Lincoln
County-
Including the cities of Hugo, Agate, Matheson, and Limon
310 AM MST Tue Mar 4 2025

...BLIZZARD WARNING IS CANCELLED...
...WINTER WEATHER ADVISORY IN EFFECT UNTIL 2 PM MST THIS AFTERNOON...

* WHAT...Blowing snow. Additional snow accumulations between up and 
  2 inches. Winds gusting as high as 65 mph will produce areas of 
  blowing and drifting snow.

* WHERE...Limon.

* WHEN...Until 2 PM MST this afternoon.

* IMPACTS...Snow covered roads will make travel hazardous. Snow and 
  blowing snow will reduce visibility to a quarter mile or less.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Roads will be slick resulting in slow and hazardous travel. Allow 
extra time to reach your destination.

&&

$$

COZ045-041115-
/O.CAN.KBOU.BZ.W.0001.000000T0000Z-250304T2100Z/
Central and East Adams and Arapahoe Counties-
Including the cities of Leader, Bennett, Deer Trail, and Byers
310 AM MST Tue Mar 4 2025

...BLIZZARD WARNING IS CANCELLED...

The threat for blizzard conditions has ended. Patchy blowing snow 
will be possible where it snow overnight.

$$

COZ049>051-041115-
/O.CAN.KBOU.BZ.W.0001.000000T0000Z-250305T0000Z/
Washington County-Sedgwick County-Phillips County-
Including the cities of Haxtun, Cope, Last Chance, Otis,
Julesburg, Sedgwick, Amherst, Holyoke, Akron, and Ovid
310 AM MST Tue Mar 4 2025

...BLIZZARD WARNING IS CANCELLED...

The threat for blizzard conditions has ended. Patchy blowing snow 
will be possible where it snow overnight.

$$

COZ033-034-042115-
/O.CAN.KBOU.WS.W.0005.000000T0000Z-250305T0000Z/
/O.EXA.KBOU.WW.Y.0015.000000T0000Z-250305T0000Z/
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-
Including the cities of Rocky Mountain National Park, Eisenhower
Tunnel, Williams Fork Mountains, Mount Blue Sky, Berthoud Pass,
Winter Park, East Slopes Southern Gore Range, Indian Peaks,
Cameron Pass, Breckenridge, Rabbit Ears Range, Laramie and
Medicine Bow Mountains, Willow Creek Pass, East Slopes Mosquito
Range, and Kenosha Mountains
310 AM MST Tue Mar 4 2025

...WINTER STORM WARNING IS CANCELLED...
...WINTER WEATHER ADVISORY IN EFFECT UNTIL 5 PM MST THIS AFTERNOON...

* WHAT...Snow. Additional snow accumulations 2 to 6 inches. Winds 
  gusting as high as 50 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...Until 5 PM MST this afternoon.

* IMPACTS...Snow covered roads will make travel hazardous.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Roads will be slick resulting in slow and hazardous travel. Allow 
extra time to reach your destination.

&&

$$

COZ042-047-048-041115-
/O.CAN.KBOU.WW.Y.0015.000000T0000Z-250304T2100Z/
Northeast Weld County-Southeast Elbert County Below
6000 Feet/South Lincoln County-Logan County-
Including the cities of Crook, Grover, Raymer, Punkin Center,
Stoneham, Merino, Forder, Karval, Peetz, Kutch, Briggsdale,
Sterling, and Pawnee Buttes
310 AM MST Tue Mar 4 2025

...WINTER WEATHER ADVISORY IS CANCELLED...

Strong winds may produce blowing snow, where it snowed overnight. 

$$

COZ031-042115-
/O.CON.KBOU.WW.Y.0015.000000T0000Z-250305T0000Z/
West Jackson and West Grand Counties Above 9000 Feet-
Including the cities of Mt Zirkel
310 AM MST Tue Mar 4 2025

...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 5 PM MST THIS 
AFTERNOON...

* WHAT...Snow. Additional snow accumulations between 2 and 6 inches. 
  Winds gusting as high as 40 mph.

* WHERE...Rabbit Ears Pass.

* WHEN...Until 5 PM MST this afternoon.

* IMPACTS...Snow covered roads will make travel hazardous.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Roads will be slick resulting in slow and hazardous travel. Allow 
extra time to reach your destination.

If traveling to the mountains, be prepared for winter driving 
conditions. Check cotrip.org for road closures and traction laws.

&&

$$

For more information from the National Weather Service, visit 
https://weather.gov/bou

Meier

Area Forecast Discussion
National Weather Service Denver/Boulder CO
1133 PM MST Sun Mar 2 2025

.KEY MESSAGES...

- Winter storm to bring heavy snowfall and very windy conditions
  to the Front Range Mountains and eastern plains Monday night and
  Tuesday.

- Significant travel impacts possible across the North Central
  Mountains starting Monday afternoon and across the eastern
  plains late Monday night and Tuesday due to snow and strong
  winds.

- The next storm system is expected late Thursday and Friday.

&&

.UPDATE...
Issued at 801 PM MST Sun Mar 2 2025

Another quiet evening across the forecast area to end the weekend.
Satellite shows mid/high cloud cover across most of the high
country, which should spread into the plains overnight. Outside
some changes in cloud cover, little other weather of note is
expected through tomorrow morning, and only some minor grid edits
were made in this period.

We continue to watch trends in the early 00z guidance.
Unfortunately, we still appear to be pretty far from a consensus
at this point. The ECMWF and it's ensemble continue to trend
drier/further southeast with the axis of heaviest QPF, while some
00z CAMs are much more bullish with snow potential across the
Palmer Divide and eastern plains. We will hope for better
agreement overnight, but these rapidly deepening storms often come
with a few day-of surprises.

There is better agreement about widespread wind across the plains
Tuesday. With 700mb winds of 50-70kt in a cold air advection
regime we should see pretty widespread gusts of 50-60 mph. Like
the day shift, I did contemplate some High Wind Watches, but
decided to wait and let the night shift take a closer look and try
to capture all of our highlight updates at one time.

&&

.SHORT TERM /Through Monday/...
Issued at 304 PM MST Sun Mar 2 2025

Quiet day today ahead of the incoming storm. We're starting to see
some cloud development over the mountains, but that will probably
fade this evening before we see more significant moisture moving
into the mountains later tonight. A little wind will persist in
most areas, though the low lying cold spots could still cool off
pretty well. Forecast lows look pretty good, though we could see
the coldest spots drop to around 20 on the plains (Limon, between
Greeley/Fort Morgan) with a few single digits in places like
Fraser. Some low clouds are likely near the eastern border.

On Monday clouds will increase over the northern mountains in the
morning, then sag southward with showers breaking out in the
north. Models vary in the intensity of the showers, with some of
the more aggressive small scale models producing over half an inch
of QPF in Larimer county. We trimmed this back a bit, but the
scenario of foothills convection breaking out by mid to late
afternoon seems reasonable. It should be too warm for snow below
6,000 feet until evening, with the possible exception of the
Cheyenne Ridge area. Starting the Front Range Winter Storm Warning
at 3 PM looks about right. We added a Winter Weather Advisory for
the Rabbit Ears Pass area starting at 11 AM, as snowfall will be
earlier and lighter there but still probably impactful with the
snow/wind combination. Forecast temperatures look good for Monday,
with temperatures dropping from the low 60s into the 40s in the
afternoon from Denver northward.

&&

.LONG TERM /Monday night through Sunday/...
Issued at 304 PM MST Sun Mar 2 2025

Monday night and Tuesday a potent spring storm system is expected to
impact portions of North Central and Northeastern Colorado. The
majority of the models are showing a closed 500 MB low tracking from
Southeastern CO. Monday evening into Western Kansas by Tuesday
morning. The storm will first impact the Northern Mountains during
the afternoon hours as ample QG lift, moisture and instability
combines with cold air advection and favorable northwesterly
orographic flow. Many of the models are focusing on the heaviest
snow from Rocky Mountain National Park northwest across the
Medicine Bow Range from mid afternoon through early morning
Tuesday with snowfall rates between 1 and 2 inches per hour
possible. These areas could see total snowfall amounts between 8
and 18 inches with lighter amounts across the remainder of the
high country. The heavy snow combined with strong winds gusting to
60 mph will lead to difficult and dangerous travel.

Now focusing further east across the plains, a strong pressure
gradient on the back side of low will produce strong northerly
winds (45 mph to 65 mph) across portions of the Northeastern
Plains Monday night and Tuesday. Further west, lighter
northwesterly winds are expected across the Front Range Urban
Corridor due to a downsloping flow. This type of scenario is a
favorable environment to produce a deformation zone on the back
side of the low with a heavy band of snow associated with it. At
this time, it's difficult to know the exact location and
progression of the heavier band. However, confidence is highest
that the heavier snow, blizzard conditions and difficult travel
impacts will be from the Palmer Divide east and northeast into
Northern Lincoln and Southern Washington Counties.

Further north across the plains, there is still quite a bit of
uncertainty in snowfall amounts and travel impacts due to model
differences and a later change over from rain to snow. The model
ensembles are showing 1-2" of accumulation from this system,
while some of the deterministic solutions are showing up to 9
inches across our far northeastern Counties. Further west, the
downsloping flow may lead to little or no accumulation across the
northern Front Range Urban Corridor and adjacent plains. However,
the 18Z HRRR which is somewhat stronger and further north with the
upper low, brings the deformation zone further to the west. This
solution is suggesting 5- 10" of snow from Metro Denver into
Southwest Weld County and 6-12" across Northeastern Weld County.
This is the outlier, but not out of the realm of possibility;
especially, since it is March. This storm bears watching as minor
changes in the storm track could have a significant effect in
snowfall totals as well as travel impacts. Stay tuned.

Dry and warmer weather along with lighter winds are expected on
Wednesday as upper level high pressure rebuilds over the Rocky
Mountain Region.

A return to unsettled weather is expected on Thursday into Friday as
the next storm system moves across the forecast area. The mountains
should see another round of snow with this system with some rain and
snow possible across the lower elevations.

Dry and warmer weather is expected by next weekend as upper level
high pressure rebuilds over the state.

&&

.AVIATION /06Z TAFS through 06Z Tuesday/...
Issued at 1130 PM MST Sun Mar 2 2025

Winds look to be due southwesterly at DIA overnight, with normal
diurnal patterns on Monday. Models show a decent front to push
down over the airport around 00Z late Monday afternoon. Winds will
be from 340-350 at 18-25 knots. Gusts from 30-40 knots are
possible. There will be no ceiling issues for the TAF from now
through late Monday afternoon.

&&

.BOU WATCHES/WARNINGS/ADVISORIES...
Winter Weather Advisory from 11 AM Monday to 11 AM MST Tuesday
for COZ031.

Winter Storm Watch from Monday afternoon through Tuesday
afternoon for COZ033-034.

Winter Storm Watch from Monday evening through Tuesday afternoon
for COZ041-045>047-049.

Winter Storm Watch from late Monday night through Tuesday
afternoon for COZ042-048-050-051.

Red Flag Warning from 11 AM to 6 PM MST Monday for COZ247.

&&

UPDATE...Hiris
SHORT TERM...Gimmestad
LONG TERM...JK
AVIATION...RJK

Hazardous Weather Outlook
National Weather Service Denver/Boulder CO
929 AM MST Sun Mar 2 2025

COZ030>051-031630-
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-
929 AM MST Sun Mar 2 2025

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

.DAY ONE...Today and Tonight

No hazardous weather is expected.

.DAYS TWO THROUGH SEVEN...Monday through Saturday

A strong storm will move across the state Monday night and
Tuesday. Precipitation will begin as rain across the lower
elevations and then switch to snow Monday night with all snow by
Tuesday morning. Snowfall forecast for areas along and north of
I-76 is highly uncertain due to the storm track and when the
change over to snow occurs.

Very windy conditions are also expected to develop with this
storm with gusts to 60 mph possible over the eastern plains. The
strong winds and snowfall will produce considerable blowing and
drifting snow with blizzard conditions possible. The worst
conditions are expected to be south of Denver over the Palmer
Divide and also east of Denver on I-70. Travel in these areas may
become very difficult to impossible due to the blowing and
drifting snow.

For the mountains, snow forms Monday afternoon and will possibly
be very heavy late Monday afternoon and evening as the main storm
crosses the state. Snow is expected to continue through Tuesday,
though the intensity is expected to lighten up. Winds to 60 mph
over the higher passes are expected to produce blowing and
drifting snow.

.SPOTTER INFORMATION STATEMENT...

Spotter activation will not be needed today or tonight.