470  
WWUS45 KBOU 182050  
WSWBOU  
 
URGENT - WINTER WEATHER MESSAGE  
NATIONAL WEATHER SERVICE DENVER CO  
250 PM MDT SUN MAY 18 2025  
 
COZ031-034-191200-  
/O.CON.KBOU.WW.Y.0024.000000T0000Z-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 MOUNT BLUE SKY, INDIAN PEAKS, EAST SLOPES  
MOSQUITO RANGE, KENOSHA MOUNTAINS, WINTER PARK, EAST SLOPES  
SOUTHERN GORE RANGE, EISENHOWER TUNNEL, WILLIAMS FORK MOUNTAINS,  
MT ZIRKEL, BERTHOUD PASS, AND BRECKENRIDGE  
250 PM MDT SUN MAY 18 2025  
   
..WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 6 AM MDT MONDAY
 
 
* WHAT...SNOW. ADDITIONAL SNOW ACCUMULATIONS UP TO 6 INCHES. WINDS  
GUSTING AS HIGH AS 40 MPH.  
 
* WHERE...RABBIT EARS PASS, AND THE MOUNTAINS OF SUMMIT COUNTY, THE  
MOSQUITO RANGE, AND THE INDIAN PEAKS.  
 
* WHEN...UNTIL 6 AM MDT MONDAY.  
 
* IMPACTS...SLICK TRAVEL CONDITIONS MAY DEVELOP 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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