329  
WWUS75 KBOU 181911  
NPWBOU  
 
URGENT - WEATHER MESSAGE  
NATIONAL WEATHER SERVICE DENVER CO  
1211 PM MST THU DEC 18 2025  
 
COZ050-051-182015-  
/O.EXP.KBOU.HW.W.0009.000000T0000Z-251218T1900Z/  
SEDGWICK COUNTY-PHILLIPS COUNTY-  
INCLUDING THE CITIES OF HOLYOKE, OVID, JULESBURG, HAXTUN, AMHERST,  
AND SEDGWICK  
1211 PM MST THU DEC 18 2025  
   
..HIGH WIND WARNING HAS EXPIRED
 
 
WIND GUSTS ARE SLOWLY DIMINISHING ACROSS THE AREA AND WILL CONTINUE  
TO DECREASE INTO THE REST OF THE AFTERNOON. A RED FLAG WARNING  
REMAINS IN EFFECT UNTIL 5 PM MST.  
 

 
 
COZ033>036-190315-  
/O.CON.KBOU.HW.A.0009.251219T0400Z-251220T0000Z/  
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-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 INDIAN PEAKS, EVERGREEN, BRECKENRIDGE,  
CAMERON PASS, IDAHO SPRINGS, WESTCREEK, EAST SLOPES SOUTHERN GORE  
RANGE, RED FEATHER LAKES, RABBIT EARS RANGE, BAILEY, KENOSHA  
MOUNTAINS, LARAMIE AND MEDICINE BOW MOUNTAINS, CENTRAL CITY, ESTES  
PARK, WINTER PARK, WILLOW CREEK PASS, MOUNT BLUE SKY, WILLIAMS FORK  
MOUNTAINS, EISENHOWER TUNNEL, GLENDEVEY, BERTHOUD PASS, NEDERLAND,  
ROCKY MOUNTAIN NATIONAL PARK, EAST SLOPES MOSQUITO RANGE, AND  
GEORGETOWN  
1211 PM MST THU DEC 18 2025  
 
...HIGH WIND WATCH REMAINS IN EFFECT FROM 9 PM MST THIS EVENING  
THROUGH FRIDAY AFTERNOON...  
 
* WHAT...WEST WINDS 30 TO 40 MPH WITH GUSTS UP TO 100 MPH POSSIBLE.  
 
* WHERE...ROCKY MOUNTAIN NATIONAL PARK AND THE MEDICINE BOW RANGE,  
THE MOUNTAINS OF SUMMIT COUNTY, THE MOSQUITO RANGE, AND THE INDIAN  
PEAKS, THE NORTHERN FRONT RANGE FOOTHILLS, AND THE SOUTHERN FRONT  
RANGE FOOTHILLS.  
 
* WHEN...FROM 9 PM MST THIS EVENING THROUGH FRIDAY AFTERNOON.  
 
* IMPACTS...DAMAGING WINDS MAY BLOW DOWN TREES AND POWER LINES, WITH  
POWER OUTAGES POSSIBLE. TRAVEL WILL BE DIFFICULT, ESPECIALLY FOR  
HIGH PROFILE VEHICLES. STRONG WINDS MAY LEAD TO RAPID FIRE GROWTH  
OF ANY NEW FIRE IN THE LOWER FOOTHILLS.  
 
PRECAUTIONARY/PREPAREDNESS ACTIONS...  
 
MONITOR THE LATEST FORECASTS AND WARNINGS FOR UPDATES.  
 

 
 

 
 
COZ038-039-190315-  
/O.CON.KBOU.HW.A.0009.251219T1800Z-251220T0000Z/  
LARIMER COUNTY BELOW 6000 FEET/NORTHWEST WELD COUNTY-BOULDER AND  
JEFFERSON COUNTIES BELOW 6000 FEET/WEST BROOMFIELD COUNTY-  
INCLUDING THE CITIES OF LONGMONT, HEREFORD, BOULDER, LAKEWOOD, NUNN,  
GOLDEN, FORT COLLINS, LOVELAND, AND ARVADA  
1211 PM MST THU DEC 18 2025  
 
...HIGH WIND WATCH REMAINS IN EFFECT FROM FRIDAY MORNING THROUGH  
FRIDAY AFTERNOON...  
 
* WHAT...WEST WINDS 25 TO 40 MPH WITH GUSTS UP TO 85 MPH, STRONGEST  
NEAR THE BASE OF THE FOOTHILLS.  
 
* WHERE...FORT COLLINS, LONGMONT, BOULDER, AND THE WESTERN SUBURBS OF  
DENVER.  
 
* WHEN...FROM FRIDAY MORNING THROUGH FRIDAY AFTERNOON.  
 
* IMPACTS...DAMAGING WINDS MAY BLOW DOWN TREES AND POWER LINES.  
SCATTERED POWER OUTAGES ARE POSSIBLE. TRAVEL WILL BE DIFFICULT,  
ESPECIALLY FOR HIGH PROFILE VEHICLES. STRONG WINDS WILL LEAD TO  
RAPID FIRE GROWTH OF ANY NEW FIRE.  
 
PRECAUTIONARY/PREPAREDNESS ACTIONS...  
 
MONITOR THE LATEST FORECASTS AND WARNINGS FOR UPDATES.  
 

 
 

 
 
FOR MORE INFORMATION FROM THE NATIONAL WEATHER SERVICE, VISIT  
HTTPS://WEATHER.GOV/BOU  
 
HIRIS  
 
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