390  
WWUS45 KBOU 172033  
WSWBOU  
 
URGENT - WINTER WEATHER MESSAGE  
NATIONAL WEATHER SERVICE DENVER CO  
233 PM MDT SAT MAY 17 2025  
 
COZ031-034-181230-  
/O.NEW.KBOU.WW.Y.0024.250518T1200Z-250519T1200Z/  
WEST JACKSON AND WEST GRAND 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 MT ZIRKEL, KENOSHA MOUNTAINS, WILLIAMS  
FORK MOUNTAINS, BERTHOUD PASS, EAST SLOPES SOUTHERN GORE RANGE,  
EISENHOWER TUNNEL, WINTER PARK, INDIAN PEAKS, EAST SLOPES  
MOSQUITO RANGE, BRECKENRIDGE, AND MOUNT BLUE SKY  
233 PM MDT SAT MAY 17 2025  
 
...WINTER WEATHER ADVISORY IN EFFECT FROM 6 AM SUNDAY TO 6 AM MDT  
MONDAY...  
 
* WHAT...SNOW EXPECTED. TOTAL SNOW ACCUMULATIONS BETWEEN 4 TO 8  
INCHES FOR ELEVATIONS ABOVE 10,000 FEET. WINDS GUSTING AS HIGH AS  
45 MPH.  
 
* WHERE...RABBIT EARS PASS, AND THE MOUNTAINS OF SUMMIT COUNTY, THE  
MOSQUITO RANGE, AND THE INDIAN PEAKS.  
 
* WHEN...FROM 6 AM SUNDAY TO 6 AM MDT MONDAY.  
 
* IMPACTS...SLICK TRAVEL MAY OCCUR OVER THE HIGH MOUNTAIN PASSES.  
 
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  
 
BONNER  
 
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