981  
WWUS45 KBOU 180308  
WSWBOU  
 
URGENT - WINTER WEATHER MESSAGE  
NATIONAL WEATHER SERVICE DENVER CO  
908 PM MDT THU APR 17 2025  
 
COZ031-033-034-181215-  
/O.CON.KBOU.WW.Y.0022.000000T0000Z-250419T1200Z/  
WEST JACKSON AND WEST GRAND COUNTIES ABOVE 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-  
INCLUDING THE CITIES OF CAMERON PASS, INDIAN PEAKS, EAST SLOPES  
SOUTHERN GORE RANGE, BRECKENRIDGE, ROCKY MOUNTAIN NATIONAL PARK,  
BERTHOUD PASS, EAST SLOPES MOSQUITO RANGE, RABBIT EARS RANGE,  
EISENHOWER TUNNEL, MT ZIRKEL, LARAMIE AND MEDICINE BOW MOUNTAINS,  
WILLOW CREEK PASS, WINTER PARK, WILLIAMS FORK MOUNTAINS, KENOSHA  
MOUNTAINS, AND MOUNT BLUE SKY  
908 PM MDT THU APR 17 2025  
 
...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 6 AM MDT  
SATURDAY...  
 
* WHAT...SNOW EXPECTED. TOTAL SNOW ACCUMULATIONS BETWEEN 6 AND 12  
INCHES. WINDS GUSTING AS HIGH AS 40 MPH.  
 
* WHERE...RABBIT EARS PASS, 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 AM MDT SATURDAY.  
 
* 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.  
 

 
 

 
 
COZ035-036-181215-  
/O.CON.KBOU.WW.Y.0022.250418T1000Z-250419T1200Z/  
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-  
INCLUDING THE CITIES OF GEORGETOWN, GLENDEVEY, IDAHO SPRINGS, RED  
FEATHER LAKES, NEDERLAND, ESTES PARK, EVERGREEN, WESTCREEK,  
BAILEY, AND CENTRAL CITY  
908 PM MDT THU APR 17 2025  
 
...WINTER WEATHER ADVISORY REMAINS IN EFFECT FROM 4 AM FRIDAY TO 6  
AM MDT SATURDAY...  
 
* WHAT...SNOW EXPECTED. TOTAL SNOW ACCUMULATIONS BETWEEN 4 AND 10  
INCHES.  
 
* WHERE...THE NORTHERN FRONT RANGE FOOTHILLS, AND THE SOUTHERN FRONT  
RANGE FOOTHILLS.  
 
* WHEN...FROM 4 AM FRIDAY TO 6 AM MDT SATURDAY.  
 
* 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.  
 
ROADS WILL BE SLICK RESULTING IN SLOW AND HAZARDOUS TRAVEL. ALLOW  
EXTRA TIME TO REACH YOUR DESTINATION.  
 

 
 

 
 
COZ037-181215-  
/O.CON.KBOU.WW.Y.0022.250418T1500Z-250419T1200Z/  
CENTRAL AND SOUTHEAST PARK COUNTY-  
INCLUDING THE CITIES OF HARTSEL, SOUTH PARK, FAIRPLAY, AND LAKE  
GEORGE  
908 PM MDT THU APR 17 2025  
 
...WINTER WEATHER ADVISORY REMAINS IN EFFECT FROM 9 AM FRIDAY TO 6  
AM MDT SATURDAY...  
 
* WHAT...SNOW EXPECTED. TOTAL SNOW ACCUMULATIONS BETWEEN 4 AND 8  
INCHES.  
 
* WHERE...SOUTH PARK.  
 
* WHEN...FROM 9 AM FRIDAY TO 6 AM MDT SATURDAY.  
 
* 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.  
 
ROADS WILL BE SLICK RESULTING IN SLOW AND HAZARDOUS TRAVEL. ALLOW  
EXTRA TIME TO REACH YOUR DESTINATION.  
 

 
 

 
 
COZ041-181215-  
/O.CON.KBOU.WW.Y.0022.250418T2100Z-250419T1800Z/  
ELBERT/CENTRAL AND EAST DOUGLAS COUNTIES ABOVE 6000 FEET-  
INCLUDING THE CITIES OF ELBERT, FONDIS, KIOWA, LARKSPUR, AND  
CASTLE ROCK  
908 PM MDT THU APR 17 2025  
 
...WINTER WEATHER ADVISORY REMAINS IN EFFECT FROM 3 PM FRIDAY TO  
NOON MDT SATURDAY...  
 
* WHAT...SNOW EXPECTED. TOTAL SNOW ACCUMULATIONS BETWEEN 3 AND 7  
INCHES.  
 
* WHERE...CASTLE ROCK.  
 
* WHEN...FROM 3 PM FRIDAY TO NOON MDT SATURDAY.  
 
* IMPACTS...PLAN ON SLIPPERY ROAD CONDITIONS. THE HAZARDOUS  
CONDITIONS WILL IMPACT THE FRIDAY EVENING COMMUTE.  
 
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  
 
RPK  
 
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