666
WWUS45 KRIW 031745
WSWRIW
URGENT - WINTER WEATHER MESSAGE
NATIONAL WEATHER SERVICE RIVERTON WY
1145 AM MDT FRI APR 3 2026
WYZ001-012-014-015-024-031845-
/O.CAN.KRIW.WS.W.0003.000000T0000Z-260404T0000Z/
YELLOWSTONE NATIONAL PARK-TETON AND GROS VENTRE MOUNTAINS-WIND
RIVER MOUNTAINS WEST-WIND RIVER MOUNTAINS EAST-SALT RIVER AND
WYOMING RANGES-
INCLUDING THE CITIES OF MAMMOTH, LAKE, AND OLD FAITHFUL
1145 AM MDT FRI APR 3 2026
..WINTER STORM WARNING IS CANCELLED
SNOW HAS TAPERED OFF ACROSS THE AREA, AND ADDITIONAL ACCUMULATIONS
ARE NOT EXPECTED. THUS THE WINTER STORM WARNING WILL BE CANCELLED AT
THIS TIME.
WYZ002-013-023-031845-
/O.CAN.KRIW.WW.Y.0014.000000T0000Z-260404T0000Z/
ABSAROKA MOUNTAINS-JACKSON HOLE-STAR VALLEY-
INCLUDING THE CITIES OF AFTON, STAR VALLEY RANCH, ALPINE, THAYNE,
AND JACKSON
1145 AM MDT FRI APR 3 2026
..WINTER WEATHER ADVISORY IS CANCELLED
SNOW HAS TAPERED OFF ACROSS THE AREA, AND ADDITIONAL ACCUMULATIONS
ARE NOT EXPECTED. THURS THE WINTER WEATHER ADVISORY WILL BE
CANCELLED AT THIS TIME.
WYZ008-009-040000-
/O.CON.KRIW.WS.W.0003.000000T0000Z-260404T0000Z/
BIGHORN MOUNTAINS WEST-BIGHORN MOUNTAINS SOUTHEAST-
1145 AM MDT FRI APR 3 2026
...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 6 PM MDT THIS
EVENING...
* WHAT...HEAVY SNOW. ADDITIONAL SNOW ACCUMULATIONS UP TO 5 INCHES.
WINDS GUSTING AS HIGH AS 60 MPH.
* WHERE...BIGHORN MOUNTAINS SOUTHEAST AND BIGHORN MOUNTAINS WEST.
* WHEN...UNTIL 6 PM MDT THIS EVENING.
* IMPACTS...TRAVEL COULD BE VERY DIFFICULT, INCLUDING OVER GRANITE
PASS AND POWDER RIVER PASS.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
IF YOU MUST TRAVEL, KEEP AN EXTRA FLASHLIGHT, FOOD, AND WATER IN
YOUR VEHICLE IN CASE OF AN EMERGENCY.
FOR GRAPHICAL DEPICTIONS OF THE SNOWFALL FORECAST, INCLUDING THE
OFFICIAL NWS FORECAST, HIGH END AMOUNTS, AND LOW END AMOUNTS, VISIT
HTTPS://WEATHER.GOV/RIW/WINTER .
FOR WINTER ROAD CONDITIONS FROM THE WYOMING DEPARTMENT OF
TRANSPORTATION, VISIT HTTPS://WYOROAD.INFO .
WYZ010-040000-
/O.CON.KRIW.WS.W.0003.000000T0000Z-260404T0000Z/
NORTHEAST JOHNSON COUNTY-
INCLUDING THE CITIES OF BUFFALO
1145 AM MDT FRI APR 3 2026
...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 6 PM MDT THIS
EVENING...
* WHAT...HEAVY SNOW. ADDITIONAL SNOW ACCUMULATIONS UP TO 3 INCHES.
WINDS GUSTING AS HIGH AS 60 MPH.
* WHERE...NORTHEAST JOHNSON COUNTY.
* WHEN...UNTIL 6 PM MDT THIS EVENING.
* IMPACTS...ROADS, AND ESPECIALLY BRIDGES AND OVERPASSES, WILL
LIKELY BECOME SLICK AND HAZARDOUS, INCLUDING ALONG THE INTERSTATE
90 CORRIDOR. TRAVEL WILL BE DIFFICULT.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
IF YOU MUST TRAVEL, KEEP AN EXTRA FLASHLIGHT, FOOD, AND WATER IN
YOUR VEHICLE IN CASE OF AN EMERGENCY.
FOR GRAPHICAL DEPICTIONS OF THE SNOWFALL FORECAST, INCLUDING THE
OFFICIAL NWS FORECAST, HIGH END AMOUNTS, AND LOW END AMOUNTS, VISIT
HTTPS://WEATHER.GOV/RIW/WINTER .
FOR WINTER ROAD CONDITIONS FROM THE WYOMING DEPARTMENT OF
TRANSPORTATION, VISIT HTTPS://WYOROAD.INFO .
WYZ004-006-032200-
/O.EXT.KRIW.WW.Y.0014.000000T0000Z-260403T2200Z/
NORTH BIGHORN BASIN-SOUTHEAST BIGHORN BASIN-
INCLUDING THE CITIES OF BASIN, TEN SLEEP, LOVELL, GREYBULL,
WORLAND, SHELL, AND POWELL
1145 AM MDT FRI APR 3 2026
...WINTER WEATHER ADVISORY NOW IN EFFECT UNTIL 4 PM MDT THIS
AFTERNOON...
* WHAT...WET SNOW. ADDITIONAL SNOW ACCUMULATIONS UP TO TWO INCH.
WINDS GUSTING AS HIGH AS 50 MPH.
* WHERE...SOUTHEAST BIGHORN BASIN AND NORTH BIGHORN BASIN.
* WHEN...UNTIL 4 PM MDT THIS AFTERNOON.
* IMPACTS...SNOW ACCUMULATIONS WILL REMAIN LIGHT THE REST OF THE
DAY, BUT GUSTY WINDS WILL CONTINUE TO BRING LOWERED VISIBILITY AND
TREACHEROUS CONDITIONS THROUGH THIS AFTERNOON.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
SLOW DOWN AND USE CAUTION WHILE TRAVELING.
FOR GRAPHICAL DEPICTIONS OF THE SNOWFALL FORECAST, INCLUDING THE
OFFICIAL NWS FORECAST, HIGH END AMOUNTS, AND LOW END AMOUNTS, VISIT
HTTPS://WEATHER.GOV/RIW/WINTER .
FOR WINTER ROAD CONDITIONS FROM THE WYOMING DEPARTMENT OF
TRANSPORTATION, VISIT HTTPS://WYOROAD.INFO .
WYZ011-020-022-040000-
/O.CON.KRIW.WW.Y.0014.000000T0000Z-260404T0000Z/
SOUTHEAST JOHNSON COUNTY-NATRONA COUNTY LOWER ELEVATIONS-CASPER
MOUNTAIN-
INCLUDING THE CITIES OF KAYCEE AND CASPER
1145 AM MDT FRI APR 3 2026
...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 6 PM MDT THIS
EVENING...
* WHAT...SNOW. ADDITIONAL SNOW ACCUMULATIONS UP TO 3 INCHES. WINDS
GUSTING AS HIGH AS 45 MPH.
* WHERE...CASPER MOUNTAIN, NATRONA COUNTY LOWER ELEVATIONS, AND
SOUTHEAST JOHNSON COUNTY.
* WHEN...UNTIL 6 PM MDT THIS EVENING.
* IMPACTS...ROADS, AND ESPECIALLY BRIDGES AND OVERPASSES, WILL
REMAIN SLICK AND HAZARDOUS. PLAN ON SLIPPERY ROAD CONDITIONS.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
SLOW DOWN AND USE CAUTION WHILE TRAVELING.
FOR GRAPHICAL DEPICTIONS OF THE SNOWFALL FORECAST, INCLUDING THE
OFFICIAL NWS FORECAST, HIGH END AMOUNTS, AND LOW END AMOUNTS, VISIT
HTTPS://WEATHER.GOV/RIW/WINTER .
FOR WINTER ROAD CONDITIONS FROM THE WYOMING DEPARTMENT OF
TRANSPORTATION, VISIT HTTPS://WYOROAD.INFO .
FOR MORE INFORMATION FROM THE NATIONAL WEATHER SERVICE, VISIT
HTTPS://WEATHER.GOV/RIW/ .
STRAUB
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