375
WWUS45 KRIW 180903
WSWRIW
URGENT - WINTER WEATHER MESSAGE
NATIONAL WEATHER SERVICE RIVERTON WY
303 AM MDT FRI APR 18 2025
WYZ003-005-181015-
/O.EXP.KRIW.WS.W.0010.000000T0000Z-250418T0900Z/
CODY FOOTHILLS-SOUTHWEST BIGHORN BASIN-
INCLUDING THE CITIES OF CLARK, THERMOPOLIS, CODY, AND MEETEETSE
303 AM MDT FRI APR 18 2025
..WINTER STORM WARNING HAS EXPIRED
SNOW CONTINUES TO TAPER AND ANY FURTHER SNOW ACCUMULATION WILL BE
MINIMAL. THUS THIS WINTER STORM WARNING WILL BE ALLOWED TO EXPIRE AT
THIS TIME.
WYZ010-011-181800-
/O.CON.KRIW.WS.W.0010.000000T0000Z-250418T1800Z/
NORTHEAST JOHNSON COUNTY-SOUTHEAST JOHNSON COUNTY-
INCLUDING THE CITIES OF BUFFALO AND KAYCEE
303 AM MDT FRI APR 18 2025
..WINTER STORM WARNING REMAINS IN EFFECT UNTIL NOON MDT TODAY
* WHAT...HEAVY SNOW. ADDITIONAL SNOW ACCUMULATIONS UP TO TWO INCHES.
* WHERE...JOHNSON COUNTY.
* WHEN...UNTIL NOON MDT TODAY.
* IMPACTS...PLAN ON SLIPPERY ROAD CONDITIONS ALONG INTERSTATE 25 AND
INTERSTATE 90.
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 .
WYZ015-181800-
/O.CON.KRIW.WS.W.0010.000000T0000Z-250418T1800Z/
WIND RIVER MOUNTAINS EAST-
303 AM MDT FRI APR 18 2025
..WINTER STORM WARNING REMAINS IN EFFECT UNTIL NOON MDT TODAY
* WHAT...HEAVY SNOW. ADDITIONAL SNOW ACCUMULATIONS BETWEEN 3 AND 5
INCHES. WINDS GUSTING AS HIGH AS 55 MPH.
* WHERE...WIND RIVER MOUNTAINS EAST.
* WHEN...UNTIL NOON MDT TODAY.
* IMPACTS...TRAVEL COULD BE VERY DIFFICULT, ESPECIALLY ACROSS SOUTH
PASS. WIDESPREAD BLOWING SNOW COULD SIGNIFICANTLY REDUCE
VISIBILITY.
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 .
WYZ016>019-181800-
/O.CON.KRIW.WS.W.0010.000000T0000Z-250418T1800Z/
UPPER WIND RIVER BASIN-WIND RIVER BASIN-LANDER FOOTHILLS-GREEN
MOUNTAINS AND RATTLESNAKE RANGE-
INCLUDING THE CITIES OF SHOSHONI, LANDER, DUBOIS, RIVERTON, AND
JEFFREY CITY
303 AM MDT FRI APR 18 2025
..WINTER STORM WARNING REMAINS IN EFFECT UNTIL NOON MDT TODAY
* WHAT...HEAVY SNOW. ADDITIONAL SNOW ACCUMULATIONS 3 TO 6 INCHES.
WINDS GUSTING AS HIGH AS 45 MPH.
* WHERE...GREEN MOUNTAINS AND RATTLESNAKE RANGE, LANDER FOOTHILLS,
UPPER WIND RIVER BASIN, AND WIND RIVER BASIN.
* WHEN...UNTIL NOON MDT TODAY.
* IMPACTS...TRAVEL COULD BE DIFFICULT. THE HAZARDOUS CONDITIONS WILL
IMPACT THE FRIDAY MORNING COMMUTE.
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 .
WYZ020-181800-
/O.CON.KRIW.WS.W.0010.000000T0000Z-250418T1800Z/
NATRONA COUNTY LOWER ELEVATIONS-
INCLUDING THE CITIES OF CASPER
303 AM MDT FRI APR 18 2025
..WINTER STORM WARNING REMAINS IN EFFECT UNTIL NOON MDT TODAY
* WHAT...HEAVY SNOW. ADDITIONAL SNOW ACCUMULATIONS BETWEEN 2 AND 4
INCHES. WINDS GUSTING AS HIGH AS 40 MPH.
* WHERE...NATRONA COUNTY LOWER ELEVATIONS.
* WHEN...UNTIL NOON MDT TODAY.
* IMPACTS...PLAN ON SLIPPERY ROAD CONDITIONS. THE HAZARDOUS
CONDITIONS COULD IMPACT THE FRIDAY MORNING COMMUTE.
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 .
WYZ022-181800-
/O.CON.KRIW.WS.W.0010.000000T0000Z-250418T1800Z/
CASPER MOUNTAIN-
303 AM MDT FRI APR 18 2025
..WINTER STORM WARNING REMAINS IN EFFECT UNTIL NOON MDT TODAY
* WHAT...HEAVY SNOW. ADDITIONAL SNOW ACCUMULATIONS BETWEEN 3 AND 6
INCHES. WINDS GUSTING AS HIGH AS 40 MPH.
* WHERE...CASPER MOUNTAIN.
* WHEN...UNTIL NOON MDT TODAY.
* IMPACTS...TRAVEL COULD BE DIFFICULT. THE HAZARDOUS CONDITIONS
COULD IMPACT THE FRIDAY MORNING COMMUTE.
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 .
WYZ002-181800-
/O.CON.KRIW.WW.Y.0021.000000T0000Z-250418T1800Z/
ABSAROKA MOUNTAINS-
303 AM MDT FRI APR 18 2025
..WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL NOON MDT TODAY
* WHAT...SNOW. ADDITIONAL SNOW ACCUMULATIONS UP TO 3 INCHES. WINDS
GUSTING AS HIGH AS 35 MPH.
* WHERE...ABSAROKA MOUNTAINS.
* WHEN...UNTIL NOON MDT TODAY.
* IMPACTS...TRAVEL COULD BE DIFFICULT, ESPECIALLY OVER CHIEF JOSEPH
PASS.
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 .
WYZ007>009-181800-
/O.CON.KRIW.WW.Y.0021.000000T0000Z-250418T1800Z/
OWL CREEK AND BRIDGER MOUNTAINS-BIGHORN MOUNTAINS WEST-BIGHORN
MOUNTAINS SOUTHEAST-
303 AM MDT FRI APR 18 2025
..WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL NOON MDT TODAY
* WHAT...SNOW. ADDITIONAL SNOW ACCUMULATIONS 2 TO 5 INCHES. WINDS
GUSTING AS HIGH AS 35 MPH.
* WHERE...OWL CREEK AND BRIDGER MOUNTAINS, BIGHORN MOUNTAINS
SOUTHEAST, AND BIGHORN MOUNTAINS WEST.
* WHEN...UNTIL NOON MDT TODAY.
* IMPACTS...TRAVEL COULD BE VERY DIFFICULT. AREAS OF BLOWING SNOW
COULD SIGNIFICANTLY REDUCE VISIBILITY AT TIMES. THE HAZARDOUS
CONDITIONS COULD IMPACT THE FRIDAY MORNING COMMUTE.
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 .
WYZ030-181800-
/O.CON.KRIW.WW.Y.0021.000000T0000Z-250418T1800Z/
EAST SWEETWATER COUNTY-
INCLUDING THE CITIES OF WAMSUTTER
303 AM MDT FRI APR 18 2025
..WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL NOON MDT TODAY
* WHAT...SNOW. ADDITIONAL SNOW ACCUMULATIONS UP TO 3 INCHES. WINDS
GUSTING AS HIGH AS 45 MPH.
* WHERE...EAST SWEETWATER COUNTY.
* WHEN...UNTIL NOON MDT TODAY.
* IMPACTS...TRAVEL COULD BE DIFFICULT DUE TO FALLING AND BLOWING.
THE HAZARDOUS CONDITIONS COULD IMPACT THE THURSDAY EVENING
COMMUTE, ESPECIALLY ALONG INTERSTATE 80 FROM ROCK SPRINGS EASTWARD.
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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