352
WWUS45 KBOU 230922
WSWBOU
URGENT - WINTER WEATHER MESSAGE
NATIONAL WEATHER SERVICE DENVER CO
322 AM MDT TUE SEP 23 2025
COZ033-034-240000-
/O.CON.KBOU.WW.Y.0025.000000T0000Z-250924T0000Z/
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 WILLIAMS FORK MOUNTAINS, WINTER PARK,
INDIAN PEAKS, LARAMIE AND MEDICINE BOW MOUNTAINS, EISENHOWER
TUNNEL, KENOSHA MOUNTAINS, MOUNT BLUE SKY, ROCKY MOUNTAIN
NATIONAL PARK, EAST SLOPES MOSQUITO RANGE, CAMERON PASS, WILLOW
CREEK PASS, EAST SLOPES SOUTHERN GORE RANGE, BRECKENRIDGE, RABBIT
EARS RANGE, AND BERTHOUD PASS
322 AM MDT TUE SEP 23 2025
...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 6 PM MDT THIS
EVENING...
* WHAT...WET SNOW EXPECTED. TOTAL SNOW ACCUMULATIONS 4 TO 10 INCHES
ON HIGH MOUNTAIN PASSES, WITH LOCALLY A FOOT OR MORE ON HIGHEST
PEAKS ALONG THE FRONT RANGE, AND LITTLE OR NO SNOW ACCUMULATION IN
MOUNTAIN VALLEYS INCLUDING THE TOWNS OF SILVERTHORNE AND WINTER
PARK.
* 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 6 PM MDT THIS EVENING.
* IMPACTS...PLAN ON SLIPPERY AND SLUSHY ROAD CONDITIONS OVER THE
HIGH MOUNTAIN PASSES. THE HAZARDOUS CONDITIONS WILL IMPACT THE
TUESDAY MORNING AND EVENING COMMUTES.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
ROADS WILL BE SLICK RESULTING IN SLOW AND HAZARDOUS TRAVEL OVER THE
HIGH MOUNTAIN PASSES. ALLOW EXTRA TIME TO REACH YOUR DESTINATION
SAFELY. FIRST STORMS OF THE SEASON CAN BE THE MOST HAZARDOUS.
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.
FOR MORE INFORMATION FROM THE NATIONAL WEATHER SERVICE, VISIT
HTTPS://WEATHER.GOV/BOU
HIRIS
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