054
WWUS45 KBOU 050552
WSWBOU

URGENT - WINTER WEATHER MESSAGE
National Weather Service Denver CO
1152 PM MDT Mon May 4 2026

COZ038>041-051800-
/O.UPG.KBOU.WS.A.0003.260506T0200Z-260506T2100Z/
/O.EXB.KBOU.WS.W.0005.260506T0200Z-260506T2100Z/
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-
Including the cities of Castle Rock, Loveland, Denver International
Airport, Nunn, Larkspur, Hereford, City of Denver, Highlands Ranch,
Elbert, Boulder, Longmont, Parker, Arvada, Fondis, Brighton, Aurora,
Kiowa, Lakewood, Fort Collins, Golden, and Littleton
1152 PM MDT Mon May 4 2026

...WINTER STORM WARNING IN EFFECT FROM 8 PM TUESDAY TO 3 PM MDT
WEDNESDAY...

* WHAT...Heavy snow expected. Total snow accumulations between 4 and
  8 inches with locally up to 12 inches near the foothills and across
  the Palmer Divide.

* WHERE...Fort Collins, Boulder and the western suburbs of Denver,
  Denver, and Castle Rock.

* WHEN...From 8 PM Tuesday to 3 PM MDT Wednesday.

* IMPACTS...Heavy wet snow will accumulate on tree branches and
  powerlines, possibly causing them to break and lead to power
  outages. Despite lesser accumulations on roadways, slick and
  hazardous conditions are still possible for the Wednesday morning
  commute.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

If you must travel, keep an extra flashlight, food, and water in your
vehicle in case of an emergency. The latest road conditions for
Colorado can be obtained by calling 5 1 1 or by going to
www.cotrip.org.

&&

$$

COZ033-035-051800-
/O.CON.KBOU.WS.W.0005.260505T0600Z-260506T2100Z/
South and East Jackson/Larimer/North and Northeast
Grand/Northwest Boulder Counties Above 9000 Feet-Larimer and
Boulder Counties Between 6000 and 9000 Feet-
Including the cities of Rabbit Ears Range, Glendevey, Estes Park,
Rocky Mountain National Park, Cameron Pass, Nederland, Laramie and
Medicine Bow Mountains, Willow Creek Pass, and Red Feather Lakes
1152 PM MDT Mon May 4 2026

...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 3 PM MDT WEDNESDAY...

* WHAT...Heavy snow expected. Total snow accumulations between 10 and
  24 inches, heaviest above 8,000 feet. Isolated totals up to 30
  inches possible across the higher mountains in Boulder and Larimer
  counties.

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

* WHEN...Until 3 PM MDT Wednesday.

* IMPACTS...Heavy snow will accumulate on tree branches and
  powerlines, possibly causing them to break and lead to power
  outages. Travel could be very difficult at times, especially
  Tuesday afternoon through Wednesday morning which will affect the
  evening commute Tuesday and the morning commute on Wednesday.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

If you must travel, keep an extra flashlight, food, and water in your
vehicle in case of an emergency. The latest road conditions for
Colorado can be obtained by calling 5 1 1 or by going to
www.cotrip.org.

&&

$$

COZ034-036-051800-
/O.CON.KBOU.WS.W.0005.260505T1800Z-260506T2100Z/
South and Southeast Grand/West Central and Southwest
Boulder/Gilpin/Clear Creek/Summit/North and West Park Counties
Above 9000 Feet-Jefferson and West Douglas Counties Above
6000 Feet/Gilpin/Clear Creek/Northeast Park Counties Below
9000 Feet-
Including the cities of Central City, East Slopes Southern Gore
Range, Williams Fork Mountains, Evergreen, Idaho Springs, Bailey,
Eisenhower Tunnel, Mount Blue Sky, Kenosha Mountains, Indian Peaks,
Westcreek, Georgetown, Breckenridge, Winter Park, East Slopes
Mosquito Range, and Berthoud Pass
1152 PM MDT Mon May 4 2026

...WINTER STORM WARNING REMAINS IN EFFECT FROM NOON TUESDAY TO 3 PM
MDT WEDNESDAY...

* WHAT...Heavy snow expected. Total snow accumulations between 6 and
  18 inches, with the heaviest snowfall favored along and north of
  I-70.

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

* WHEN...From noon Tuesday to 3 PM MDT Wednesday.

* IMPACTS...Heavy snow will accumulate on tree branches and
  powerlines, possibly causing them to break and lead to power
  outages. Travel could be very difficult to impossible. The
  hazardous conditions will impact the Tuesday evening and Wednesday
  morning commutes.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

If you must travel, keep an extra flashlight, food, and water in your
vehicle in case of an emergency. The latest road conditions for
Colorado can be obtained by calling 5 1 1 or by going to
www.cotrip.org.

&&

$$

COZ042-044-049-051800-
/O.EXA.KBOU.WW.Y.0017.260506T0200Z-260506T2100Z/
Northeast Weld County-Morgan County-Washington County-
Including the cities of Goodrich, Brush, Briggsdale, Otis, Fort
Morgan, Akron, Last Chance, Wiggins, Stoneham, Grover, Pawnee Buttes,
Raymer, and Cope
1152 PM MDT Mon May 4 2026

...WINTER WEATHER ADVISORY IN EFFECT FROM 8 PM TUESDAY TO 3 PM MDT
WEDNESDAY...

* WHAT...Wet snow expected. Total snow accumulations between 3 and 5
  inches.

* WHERE...Briggsdale, Fort Morgan, and Akron.

* WHEN...From 8 PM Tuesday to 3 PM MDT Wednesday.

* IMPACTS...Plan on slippery road conditions especially late Tuesday
  night through Wednesday morning.

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.

&&

$$

COZ031-051800-
/O.CON.KBOU.WW.Y.0017.260505T1800Z-260506T1800Z/
West Jackson and West Grand Counties Above 9000 Feet-
Including the cities of Mt Zirkel
1152 PM MDT Mon May 4 2026

...WINTER WEATHER ADVISORY REMAINS IN EFFECT FROM NOON TUESDAY TO
NOON MDT WEDNESDAY...

* WHAT...Snow expected. Total snow accumulations between 6 and 14
  inches. Winds gusting as high as 35 mph.

* WHERE...Rabbit Ears Pass.

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

* IMPACTS...Travel could be difficult at times, especially Tuesday
  night.

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.

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

&&

$$

COZ030-032-037-043-045-046-051800-
/O.CON.KBOU.WW.Y.0017.260506T0200Z-260506T2100Z/
Jackson County Below 9000 Feet-Grand and Summit Counties Below
9000 Feet-Central and Southeast Park County-Central and South
Weld County-Central and East Adams and Arapahoe Counties-North
and Northeast Elbert County Below 6000 Feet/North Lincoln County-
Including the cities of Fort Lupton, Spicer, Agate, North Park,
Walden, Byers, Hartsel, Hugo, Fairplay, Granby, Limon, Leader, Hot
Sulphur Springs, Grand Lake, South Park, Gould, Fraser, Kremmling,
Bennett, Matheson, Lake George, Rand, Greeley, Dillon, Eaton, Roggen,
and Deer Trail
1152 PM MDT Mon May 4 2026

...WINTER WEATHER ADVISORY REMAINS IN EFFECT FROM 8 PM TUESDAY TO 3
PM MDT WEDNESDAY...

* WHAT...Snow expected. Total snow accumulations between 3 and 7
  inches, with heavier amounts possible across Park County.

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

* WHEN...From 8 PM Tuesday to 3 PM MDT Wednesday.

* IMPACTS...Plan on slippery road conditions, which may impact the
  Wednesday morning commute. The heavy and wet nature of the snow may
  lead to damage to tree limbs.

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

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