258
WWUS45 KBOU 041916
WSWBOU
URGENT - WINTER WEATHER MESSAGE
NATIONAL WEATHER SERVICE DENVER CO
116 PM MDT MON MAY 4 2026
COZ034-036-050800-
/O.UPG.KBOU.WS.A.0003.260505T1200Z-260506T2100Z/
/O.EXB.KBOU.WS.W.0005.260505T1800Z-260506T2100Z/
SOUTH AND SOUTHEAST GRAND/WEST CENTRAL AND SOUTHWEST
BOULDER/GILPIN/CLEAR CREEK/SUMMIT/NORTH AND WEST PARK COUNTIES
ABOVE 9000 FEET-JEFFERSON AND WEST DOUGLAS COUNTIES ABOVE
6000 FEET/GILPIN/CLEAR CREEK/NORTHEAST PARK COUNTIES BELOW
9000 FEET-
INCLUDING THE CITIES OF EVERGREEN, WINTER PARK, EISENHOWER TUNNEL,
WILLIAMS FORK MOUNTAINS, CENTRAL CITY, BAILEY, IDAHO SPRINGS, MOUNT
BLUE SKY, WESTCREEK, EAST SLOPES MOSQUITO RANGE, BERTHOUD PASS, EAST
SLOPES SOUTHERN GORE RANGE, GEORGETOWN, INDIAN PEAKS, BRECKENRIDGE,
AND KENOSHA MOUNTAINS
116 PM MDT MON MAY 4 2026
...WINTER STORM WARNING IN EFFECT FROM NOON TUESDAY TO 3 PM MDT
WEDNESDAY...
* WHAT...HEAVY SNOW EXPECTED. TOTAL SNOW ACCUMULATIONS BETWEEN 6 AND
18 INCHES, WITH THE HEAVIEST SNOWFALL FAVORED ALONG AND NORTH OF
I-70.
* WHERE...THE MOUNTAINS OF SUMMIT COUNTY, THE MOSQUITO RANGE, THE
INDIAN PEAKS WILDERNESS, AND THE SOUTHERN FRONT RANGE FOOTHILLS.
* WHEN...FROM NOON TUESDAY TO 3 PM MDT WEDNESDAY. HEAVIEST TUESDAY
NIGHT INTO WEDNESDAY MORNING.
* IMPACTS...HEAVY SNOW WILL ACCUMULATE ON TREE BRANCHES AND
POWERLINES, POSSIBLY CAUSING THEM TO BREAK AND LEAD TO POWER
OUTAGES. TRAVEL COULD BE VERY DIFFICULT. THE HAZARDOUS CONDITIONS
WILL IMPACT THE TUESDAY EVENING AND WEDNESDAY MORNING COMMUTES.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
MONITOR THE LATEST FORECASTS FOR UPDATES ON THIS APPROACHING STORM.
IF YOU MUST TRAVEL, KEEP AN EXTRA FLASHLIGHT, FOOD, AND WATER IN YOUR
VEHICLE IN CASE OF AN EMERGENCY. THE LATEST ROAD CONDITIONS FOR
COLORADO CAN BE OBTAINED BY CALLING 5 1 1 OR BY GOING TO
WWW.COTRIP.ORG.
COZ033-035-050800-
/O.CON.KBOU.WS.W.0005.260505T0600Z-260506T2100Z/
SOUTH AND EAST JACKSON/LARIMER/NORTH AND NORTHEAST
GRAND/NORTHWEST BOULDER COUNTIES ABOVE 9000 FEET-LARIMER AND
BOULDER COUNTIES BETWEEN 6000 AND 9000 FEET-
INCLUDING THE CITIES OF ROCKY MOUNTAIN NATIONAL PARK, CAMERON PASS,
ESTES PARK, NEDERLAND, WILLOW CREEK PASS, RED FEATHER LAKES, LARAMIE
AND MEDICINE BOW MOUNTAINS, GLENDEVEY, AND RABBIT EARS RANGE
116 PM MDT MON MAY 4 2026
...WINTER STORM WARNING REMAINS IN EFFECT FROM MIDNIGHT TONIGHT TO 3
PM MDT WEDNESDAY...
* WHAT...HEAVY SNOW EXPECTED. TOTAL SNOW ACCUMULATIONS BETWEEN 10 AND
24 INCHES, HEAVIEST ABOVE 8,000 FEET. ISOLATED TOTALS UP TO 30
INCHES POSSIBLE ACROSS THE HIGHER MOUNTAINS IN BOULDER AND LARIMER
COUNTIES.
* WHERE...ROCKY MOUNTAIN NATIONAL PARK, THE MEDICINE BOW RANGE, AND
THE NORTHERN FRONT RANGE FOOTHILLS, INCLUDING RED FEATHER LAKES,
ESTES PARK, AND NEDERLAND.
* WHEN...FROM MIDNIGHT TONIGHT TO 3 PM MDT WEDNESDAY.
* IMPACTS...HEAVY SNOW WILL ACCUMULATE ON TREE BRANCHES AND
POWERLINES, POSSIBLY CAUSING THEM TO BREAK AND LEAD TO POWER
OUTAGES. TRAVEL COULD BE VERY DIFFICULT AT TIMES, ESPECIALLY LATE
TUESDAY.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
MONITOR THE LATEST FORECASTS FOR UPDATES ON THIS APPROACHING STORM.
IF YOU MUST TRAVEL, KEEP AN EXTRA FLASHLIGHT, FOOD, AND WATER IN YOUR
VEHICLE IN CASE OF AN EMERGENCY. THE LATEST ROAD CONDITIONS FOR
COLORADO CAN BE OBTAINED BY CALLING 5 1 1 OR BY GOING TO
WWW.COTRIP.ORG.
COZ031-050800-
/O.EXB.KBOU.WW.Y.0017.260505T1800Z-260506T1800Z/
WEST JACKSON AND WEST GRAND COUNTIES ABOVE 9000 FEET-
INCLUDING THE CITIES OF MT ZIRKEL
116 PM MDT MON MAY 4 2026
...WINTER WEATHER ADVISORY IN EFFECT FROM NOON TUESDAY TO NOON MDT
WEDNESDAY...
* WHAT...SNOW EXPECTED. TOTAL SNOW ACCUMULATIONS BETWEEN 6 AND 14
INCHES. WINDS GUSTING AS HIGH AS 35 MPH.
* WHERE...RABBIT EARS PASS.
* WHEN...FROM NOON TUESDAY TO NOON MDT WEDNESDAY.
* IMPACTS...TRAVEL COULD BE DIFFICULT AT TIMES, ESPECIALLY TUESDAY
NIGHT.
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.
IF TRAVELING TO THE MOUNTAINS, BE PREPARED FOR WINTER DRIVING
CONDITIONS. CHECK COTRIP.ORG FOR ROAD CLOSURES AND TRACTION LAWS.
COZ030-032-037-043-045-046-050800-
/O.CON.KBOU.WW.Y.0017.260506T0200Z-260506T2100Z/
JACKSON COUNTY BELOW 9000 FEET-GRAND AND SUMMIT COUNTIES BELOW
9000 FEET-CENTRAL AND SOUTHEAST PARK COUNTY-CENTRAL AND SOUTH
WELD COUNTY-CENTRAL AND EAST ADAMS AND ARAPAHOE COUNTIES-NORTH
AND NORTHEAST ELBERT COUNTY BELOW 6000 FEET/NORTH LINCOLN COUNTY-
INCLUDING THE CITIES OF NORTH PARK, KREMMLING, LEADER, GRANBY, AGATE,
WALDEN, HARTSEL, GREELEY, LIMON, SPICER, FRASER, GOULD, HOT SULPHUR
SPRINGS, RAND, ROGGEN, MATHESON, DEER TRAIL, BENNETT, HUGO, BYERS,
FORT LUPTON, FAIRPLAY, GRAND LAKE, LAKE GEORGE, EATON, DILLON, AND
SOUTH PARK
116 PM MDT MON MAY 4 2026
...WINTER WEATHER ADVISORY REMAINS IN EFFECT FROM 8 PM TUESDAY TO 3
PM MDT WEDNESDAY...
* WHAT...SNOW EXPECTED. TOTAL SNOW ACCUMULATIONS BETWEEN 2 AND 6
INCHES, WITH HEAVIER AMOUNTS POSSIBLE ACROSS PARK COUNTY.
* WHERE...THE HIGH MOUNTAIN VALLEYS, AND PORTIONS OF THE CENTRAL
PLAINS FROM WELD COUNTY SOUTH INTO LINCOLN COUNTY.
* WHEN...FROM 8 PM TUESDAY TO 3 PM MDT WEDNESDAY.
* IMPACTS...PLAN ON SLIPPERY ROAD CONDITIONS, WHICH MAY IMPACT THE
WEDNESDAY MORNING COMMUTE. THE HEAVY AND WET NATURE OF THE SNOW MAY
LEAD TO DAMAGE TO TREE LIMBS.
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.
COZ038>041-050800-
/O.CON.KBOU.WS.A.0003.260506T0200Z-260506T2100Z/
LARIMER COUNTY BELOW 6000 FEET/NORTHWEST WELD COUNTY-BOULDER AND
JEFFERSON COUNTIES BELOW 6000 FEET/WEST BROOMFIELD COUNTY-NORTH
DOUGLAS COUNTY BELOW 6000 FEET/DENVER/WEST ADAMS AND ARAPAHOE
COUNTIES/EAST BROOMFIELD COUNTY-ELBERT/CENTRAL AND EAST DOUGLAS
COUNTIES ABOVE 6000 FEET-
INCLUDING THE CITIES OF GOLDEN, ELBERT, HIGHLANDS RANCH, BRIGHTON,
CITY OF DENVER, LONGMONT, KIOWA, FORT COLLINS, DENVER INTERNATIONAL
AIRPORT, LARKSPUR, LAKEWOOD, LITTLETON, FONDIS, PARKER, ARVADA,
LOVELAND, NUNN, BOULDER, HEREFORD, AURORA, AND CASTLE ROCK
116 PM MDT MON MAY 4 2026
...WINTER STORM WATCH REMAINS IN EFFECT FROM TUESDAY EVENING THROUGH
WEDNESDAY AFTERNOON...
* WHAT...HEAVY SNOW POSSIBLE. TOTAL SNOW ACCUMULATIONS BETWEEN 3 AND
8 INCHES POSSIBLE, HEAVIEST ON COLDER SURFACES AND WEST OF I-25.
* WHERE...FORT COLLINS, BOULDER AND THE WESTERN SUBURBS OF DENVER,
DENVER, AND CASTLE ROCK.
* WHEN...FROM TUESDAY EVENING THROUGH WEDNESDAY AFTERNOON. HEAVIEST
TUESDAY NIGHT INTO WEDNESDAY MORNING.
* IMPACTS...HEAVY WET SNOW WILL ACCUMULATE ON TREE BRANCHES AND
POWERLINES, POSSIBLY CAUSING THEM TO BREAK AND LEAD TO POWER
OUTAGES. DESPITE LESSER ACCUMULATIONS ON ROADWAYS, SLICK AND
HAZARDOUS CONDITIONS ARE STILL POSSIBLE FOR THE WEDNESDAY MORNING
COMMUTE.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
MONITOR THE LATEST FORECASTS FOR UPDATES ON THIS APPROACHING STORM.
FOR MORE INFORMATION FROM THE NATIONAL WEATHER SERVICE, VISIT
HTTPS://WEATHER.GOV/BOU
HIRIS
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