Alert archive / Wyoming / Winter Storm Warnings in 2021
Winter Storm Warning 5, NWS Riverton, WY
NWS Riverton, WY issued this winter storm warning at Feb 25, 2021, 2:52 AM MST for 4 counties in Wyoming. It took effect at Feb 25, 2021, 9:00 PM MST. It was in force for 33 hr. No storm report in the archive falls inside the area while it was in force.
The area
The counties it named.
The facts
- Issued
- Feb 25, 2021, 2:52 AM MST (09:52 UTC)
- In effect from
- Feb 25, 2021, 9:00 PM MST
- Expired
- Feb 27, 2021, 6:00 AM MST
- In force
- 33 hr
- Issued by
- NWS Riverton, WY
Counties Fremont County, WY, Lincoln County, WY, Sublette County, WY, Teton County, WY
The radar
The Riverton/Lander radar (KRIW), 120 km from the middle of the area, began a volume at 09:54 UTC, the scan nearest the moment this went out.
Open the radar archive at this moment
The archived warnings, watches and discussions in force at that minute are drawn over the scan, this one among them.
The nearest sounding before it
Riverton, WY (KRIW), launched 00:00Z, 9.9 hours before the alert went out and 126 km from the middle of its area. This is the routine balloon launch nearest before it, the air the forecaster had in hand, not a measurement taken for the alert.
- Mixed-layer CAPE
- 0 J/kg
- Mixed-layer CIN
- No buoyant parcel
- Mixed-layer LCL
- 1869 m above ground
- 0-6 km bulk shear
- 56 kt
- 0-1 km storm-relative helicity
- 65 m²/s²
- 0-3 km storm-relative helicity
- 99 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
511 WWUS45 KRIW 250952 WSWRIW URGENT - WINTER WEATHER MESSAGE National Weather Service Riverton WY 252 AM MST Thu Feb 25 2021 ...Accumulating snow returns to far western Wyoming Tonight... .A storm will bring significant snow across far western Wyoming, including Yellowstone National Park, tonight through early Saturday morning. Strong, gusty winds, along with periods of heavy snow, will occur Friday. WYZ013-023-260100- /O.UPG.KRIW.WW.Y.0015.210226T0400Z-210227T1300Z/ /O.NEW.KRIW.WS.W.0005.210226T0400Z-210227T1300Z/ Jackson Hole-Star Valley- Including the cities of Jackson, Afton, Alpine, Star Valley Ranch, and Thayne 252 AM MST Thu Feb 25 2021 ...WINTER STORM WARNING IN EFFECT FROM 9 PM THIS EVENING TO 6 AM MST SATURDAY... * WHAT...Heavy snow expected. Total snow accumulations of 5 to 8 inches. South winds gusting up to 30 mph will occur in the Jackson Valley this afternoon, before the snow starts. Winds will decrease tonight, increasing again Friday. Winds gusting as high as 35 mph will be widespread Friday afternoon. * WHERE...Jackson Hole and Star Valley. * WHEN...From 9 PM this evening to 6 AM MST Saturday. * IMPACTS...Travel could be very difficult. Areas of blowing snow could significantly reduce visibility. The hazardous conditions could impact the morning and evening commutes. * ADDITIONAL DETAILS...Skiers and snowmobilers can easily become disoriented and lost due to severely reduced visibility. PRECAUTIONARY/PREPAREDNESS ACTIONS... If you must travel, keep an extra flashlight, food, and water in your vehicle in case of an emergency. Please monitor the Bridger-Teton Avalanche Center at JHAVALANCHE.ORG, if your plans include travel into the back country. The latest road conditions for the state you are calling from can be obtained by calling 5 1 1. && $$ WYZ012-024-260100- /O.UPG.KRIW.WW.Y.0015.210226T0400Z-210227T1300Z/ /O.NEW.KRIW.WS.W.0005.210226T0400Z-210227T1300Z/ Teton and Gros Ventre Mountains-Salt River and Wyoming Ranges- 252 AM MST Thu Feb 25 2021 ...WINTER STORM WARNING IN EFFECT FROM 9 PM THIS EVENING TO 6 AM MST SATURDAY... * WHAT...Heavy snow expected. Total snow accumulations of 10 to 16 inches. Winds gusting up to 40 mph tonight, increasing as high as 55 mph during the day Friday. * WHERE...Teton and Gros Ventre Mountains and Salt River and Wyoming Ranges. * WHEN...From 9 PM this evening to 6 AM MST Saturday. * IMPACTS...Travel could be very difficult, especially over Teton, Togwotee and Salt River Passes. Areas of blowing snow could significantly reduce visibility. The hazardous conditions could impact the morning and evening commute. * ADDITIONAL DETAILS...Skiers and snowmobilers can easily become disoriented and lost due to severely reduced visibility. PRECAUTIONARY/PREPAREDNESS ACTIONS... If you must travel, keep an extra flashlight, food, and water in your vehicle in case of an emergency. Please monitor the Bridger-Teton Avalanche Center at JHAVALANCHE.ORG, if your plans include travel into the back country. The latest road conditions for the state you are calling from can be obtained by calling 5 1 1. && $$ WYZ001-260100- /O.NEW.KRIW.WW.Y.0016.210226T0100Z-210227T0600Z/ Yellowstone National Park- Including the cities of Lake, Mammoth, and Old Faithful 252 AM MST Thu Feb 25 2021 ...WINTER WEATHER ADVISORY IN EFFECT FROM 6 PM THIS EVENING TO 11 PM MST FRIDAY... * WHAT...Snow expected. Total snow accumulations of 4 to 8 inches; 1 to 3 inches on the north end near Mammoth; 8 to 12 inches near the South Entrance and Pitchstone/Madison Plateaus. Winds gusting as high as 50 mph, as the snow begins to fall this evening. Winds gusting as high as 40 mph Friday afternoon. * WHERE...Yellowstone National Park. * WHEN...From 6 PM this evening to 11 PM MST Friday. * IMPACTS...Expect very difficult travel. * ADDITIONAL DETAILS...Snowmobilers can easily become disoriented and lost due to severely reduced visibility. PRECAUTIONARY/PREPAREDNESS ACTIONS... Slow down and use caution while traveling. The latest road conditions for the state you are calling from can be obtained by calling 5 1 1. && $$ WYZ025-260100- /O.NEW.KRIW.WW.Y.0016.210226T0600Z-210227T1300Z/ Upper Green River Basin Foothills- Including the city of Pinedale 252 AM MST Thu Feb 25 2021 ...WINTER WEATHER ADVISORY IN EFFECT FROM 11 PM THIS EVENING TO 6 AM MST SATURDAY... * WHAT...Snow expected. Total snow accumulations of 4 to 6 inches near Hoback and Bondurant; 1 to 2 inches near Pinedale. Winds gusting as high as 35 mph during the day Friday. * WHERE...Upper Green River Basin Foothills. * WHEN...From 11 PM this evening to 6 AM MST Saturday. * IMPACTS...Travel could be very difficult. Areas of blowing snow could significantly reduce visibility. The hazardous conditions could impact the morning and evening commutes. * ADDITIONAL DETAILS...Skiers and snowmobilers can easily become disoriented and lost due to severely reduced visibility. PRECAUTIONARY/PREPAREDNESS ACTIONS... Slow down and use caution while traveling. The latest road conditions for the state you are calling from can be obtained by calling 5 1 1. && $$ For more information from the National Weather Service visit http://weather.gov/riw
7 follow-up statements
809 WWUS45 KRIW 252246 WSWRIW URGENT - WINTER WEATHER MESSAGE National Weather Service Riverton WY 346 PM MST Thu Feb 25 2021 ...Accumulating snow returns to far western Wyoming Tonight... .A storm will bring significant snow across far western Wyoming, including Yellowstone National Park, tonight through early Saturday morning. Strong, gusty winds, along with periods of heavy snow, will occur Friday. WYZ012-024-261215- /O.CON.KRIW.WS.W.0005.210226T0400Z-210227T1300Z/ Teton and Gros Ventre Mountains-Salt River and Wyoming Ranges- 346 PM MST Thu Feb 25 2021 ...WINTER STORM WARNING REMAINS IN EFFECT FROM 9 PM THIS EVENING TO 6 AM MST SATURDAY... * WHAT...Heavy snow expected. Total snow accumulations of 10 to 16 inches. Winds gusting up to 40 mph tonight, increasing as high as 55 mph during the day Friday. * WHERE...Teton and Gros Ventre Mountains and Salt River and Wyoming Ranges. * WHEN...From 9 PM this evening to 6 AM MST Saturday. * IMPACTS...Travel could be very difficult, especially over Teton, Togwotee and Salt River Passes. Areas of blowing snow could significantly reduce visibility. The hazardous conditions could impact the morning and evening commute. PRECAUTIONARY/PREPAREDNESS ACTIONS... If you must travel, keep an extra flashlight, food, and water in your vehicle in case of an emergency. The latest road conditions for the state you are calling from can be obtained by calling 5 1 1. && $$ WYZ013-023-261215- /O.CON.KRIW.WS.W.0005.210226T0400Z-210227T1300Z/ Jackson Hole-Star Valley- Including the cities of Jackson, Afton, Alpine, Star Valley Ranch, and Thayne 346 PM MST Thu Feb 25 2021 ...WINTER STORM WARNING REMAINS IN EFFECT FROM 9 PM THIS EVENING TO 6 AM MST SATURDAY... * WHAT...Heavy snow expected. Total snow accumulations of 5 to 8 inches. South winds gusting up to 30 mph will occur in the Jackson Valley this afternoon, before the snow starts. Winds will decrease tonight, increasing again Friday. Winds gusting as high as 35 mph will be widespread Friday afternoon. * WHERE...Jackson Hole and Star Valley. * WHEN...From 9 PM this evening to 6 AM MST Saturday. * IMPACTS...Travel could be very difficult. Areas of blowing snow could significantly reduce visibility. The hazardous conditions could impact the morning and evening commutes. PRECAUTIONARY/PREPAREDNESS ACTIONS... If you must travel, keep an extra flashlight, food, and water in your vehicle in case of an emergency. The latest road conditions for the state you are calling from can be obtained by calling 5 1 1. && $$ WYZ001-261215- /O.CON.KRIW.WW.Y.0016.210226T0100Z-210227T0600Z/ Yellowstone National Park- Including the cities of Lake, Mammoth, and Old Faithful 346 PM MST Thu Feb 25 2021 ...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 11 PM MST FRIDAY... * WHAT...Snow expected. Total snow accumulations of 4 to 8 inches; 1 to 3 inches on the north end near Mammoth; 8 to 12 inches near the South Entrance and Pitchstone/Madison Plateaus. Winds gusting as high as 50 mph, as the snow begins to fall this evening. Winds gusting as high as 40 mph Friday afternoon. * WHERE...Yellowstone National Park. * WHEN...From 6 PM this evening to 11 PM MST Friday. * IMPACTS...Expect very difficult travel. PRECAUTIONARY/PREPAREDNESS ACTIONS... Slow down and use caution while traveling. The latest road conditions for the state you are calling from can be obtained by calling 5 1 1. && $$ WYZ025-261215- /O.CON.KRIW.WW.Y.0016.210226T0600Z-210227T1300Z/ Upper Green River Basin Foothills- Including the city of Pinedale 346 PM MST Thu Feb 25 2021 ...WINTER WEATHER ADVISORY REMAINS IN EFFECT FROM 11 PM THIS EVENING TO 6 AM MST SATURDAY... * WHAT...Snow expected. Total snow accumulations of 4 to 6 inches near Hoback and Bondurant; 1 to 2 inches near Pinedale. Winds gusting as high as 35 mph during the day Friday. * WHERE...Upper Green River Basin Foothills. * WHEN...From 11 PM this evening to 6 AM MST Saturday. * IMPACTS...Travel could be very difficult. Areas of blowing snow could significantly reduce visibility. The hazardous conditions could impact the morning and evening commutes. PRECAUTIONARY/PREPAREDNESS ACTIONS... Slow down and use caution while traveling. The latest road conditions for the state you are calling from can be obtained by calling 5 1 1. && $$ For more information from the National Weather Service visit http://weather.gov/riw
673 WWUS45 KRIW 260845 WSWRIW URGENT - WINTER WEATHER MESSAGE National Weather Service Riverton WY 145 AM MST Fri Feb 26 2021 ...Accumulating snow returns to western Wyoming... .A storm will bring significant snow across far western Wyoming, including Yellowstone National Park through early Saturday morning. Strong, gusty winds, along with periods of heavy snow, will occur Friday. WYZ012-024-270000- /O.CON.KRIW.WS.W.0005.000000T0000Z-210227T1300Z/ Teton and Gros Ventre Mountains-Salt River and Wyoming Ranges- 145 AM MST Fri Feb 26 2021 ...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 6 AM MST SATURDAY... * WHAT...Heavy snow expected. Total snow accumulations of 10 to 16 inches. Winds gusting up to 40 mph tonight, increasing as high as 55 mph during the day Friday. * WHERE...Teton and Gros Ventre Mountains and Salt River and Wyoming Ranges. * WHEN...Through 6 AM MST Saturday. * IMPACTS...Travel could be very difficult, especially over Teton, Togwotee and Salt River Passes. Areas of blowing snow could significantly reduce visibility. The hazardous conditions could impact the morning and evening commute. PRECAUTIONARY/PREPAREDNESS ACTIONS... If you must travel, keep an extra flashlight, food, and water in your vehicle in case of an emergency. The latest road conditions for the state you are calling from can be obtained by calling 5 1 1. && $$ WYZ013-023-270000- /O.CON.KRIW.WS.W.0005.000000T0000Z-210227T1300Z/ Jackson Hole-Star Valley- Including the cities of Jackson, Afton, Alpine, Star Valley Ranch, and Thayne 145 AM MST Fri Feb 26 2021 ...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 6 AM MST SATURDAY... * WHAT...Heavy snow expected. Total snow accumulations of 4 to 8 inches. Winds gusting as high as 35 mph. * WHERE...Jackson Hole and Star Valley. * WHEN...Through 6 AM MST Saturday. * IMPACTS...Travel could be very difficult. Areas of blowing snow could significantly reduce visibility. The hazardous conditions could impact the morning and evening commutes. PRECAUTIONARY/PREPAREDNESS ACTIONS... If you must travel, keep an extra flashlight, food, and water in your vehicle in case of an emergency. The latest road conditions for the state you are calling from can be obtained by calling 5 1 1. && $$ WYZ001-270000- /O.CON.KRIW.WW.Y.0016.000000T0000Z-210227T0600Z/ Yellowstone National Park- Including the cities of Lake, Mammoth, and Old Faithful 145 AM MST Fri Feb 26 2021 ...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 11 PM MST THIS EVENING... * WHAT...Snow expected. Total snow accumulations of 4 to 8 inches; 1 to 3 inches on the north end near Mammoth; 8 to 12 inches near the South Entrance and Pitchstone/Madison Plateaus. Winds gusting as high as 40 mph. * WHERE...Yellowstone National Park. * WHEN...Through 11 PM MST Friday. * IMPACTS...Expect very difficult travel. PRECAUTIONARY/PREPAREDNESS ACTIONS... Slow down and use caution while traveling. The latest road conditions for the state you are calling from can be obtained by calling 5 1 1. && $$ WYZ025-270000- /O.CON.KRIW.WW.Y.0016.000000T0000Z-210227T1300Z/ Upper Green River Basin Foothills- Including the city of Pinedale 145 AM MST Fri Feb 26 2021 ...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 6 AM MST SATURDAY... * WHAT...Snow expected. Total snow accumulations of 4 to 6 inches near Hoback and Bondurant; 1 to 2 inches near Pinedale. Winds gusting as high as 35 mph during the day Friday. * WHERE...Upper Green River Basin Foothills. * WHEN...Through 6 AM MST Saturday. * IMPACTS...Travel could be very difficult. Areas of blowing snow could significantly reduce visibility. The hazardous conditions could impact the morning and evening commutes. PRECAUTIONARY/PREPAREDNESS ACTIONS... Slow down and use caution while traveling. The latest road conditions for the state you are calling from can be obtained by calling 5 1 1. && $$ For more information from the National Weather Service visit http://weather.gov/riw
633 WWUS45 KRIW 262230 WSWRIW URGENT - WINTER WEATHER MESSAGE National Weather Service Riverton WY 330 PM MST Fri Feb 26 2021 ...Accumulating snow returns to western Wyoming... .A storm will continue to bring significant snow across far western Wyoming, including Yellowstone National Park, through early Saturday morning. Strong and gusty winds, along with periods of heavy snow, will continue through the night tonight. WYZ012-024-270615- /O.CON.KRIW.WS.W.0005.000000T0000Z-210227T1300Z/ Teton and Gros Ventre Mountains-Salt River and Wyoming Ranges- 330 PM MST Fri Feb 26 2021 ...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 6 AM MST SATURDAY... * WHAT...Heavy snow. Additional snow accumulations of 4 to 8 inches. * WHERE...Teton and Gros Ventre Mountains and Salt River and Wyoming Ranges. * WHEN...Until 6 AM MST Saturday. * IMPACTS...Travel could be very difficult, especially over Teton, Togwotee and Salt River Passes. Areas of blowing snow could significantly reduce visibility. The hazardous conditions could impact the morning and evening commute. PRECAUTIONARY/PREPAREDNESS ACTIONS... If you must travel, keep an extra flashlight, food, and water in your vehicle in case of an emergency. The latest road conditions for the state you are calling from can be obtained by calling 5 1 1. && $$ WYZ013-023-270615- /O.CON.KRIW.WS.W.0005.000000T0000Z-210227T1300Z/ Jackson Hole-Star Valley- Including the cities of Jackson, Afton, Alpine, Star Valley Ranch, and Thayne 330 PM MST Fri Feb 26 2021 ...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 6 AM MST SATURDAY... * WHAT...Heavy snow. Additional snow accumulations of 1 to 3 inches. * WHERE...Jackson Hole and Star Valley. * WHEN...Until 6 AM MST Saturday. * IMPACTS...Travel could be very difficult. Areas of blowing snow could significantly reduce visibility. The hazardous conditions could impact the morning and evening commutes. PRECAUTIONARY/PREPAREDNESS ACTIONS... If you must travel, keep an extra flashlight, food, and water in your vehicle in case of an emergency. The latest road conditions for the state you are calling from can be obtained by calling 5 1 1. && $$ WYZ001-270600- /O.CON.KRIW.WW.Y.0016.000000T0000Z-210227T0600Z/ Yellowstone National Park- Including the cities of Lake, Mammoth, and Old Faithful 330 PM MST Fri Feb 26 2021 ...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 11 PM MST THIS EVENING... * WHAT...Snow. Additional snow accumulations of 1 to 3 inches. Winds gusting as high as 35 mph. * WHERE...Yellowstone National Park. * WHEN...Until 11 PM MST this evening. * IMPACTS...Expect very difficult travel. PRECAUTIONARY/PREPAREDNESS ACTIONS... Slow down and use caution while traveling. The latest road conditions for the state you are calling from can be obtained by calling 5 1 1. && $$ WYZ025-270615- /O.CON.KRIW.WW.Y.0016.000000T0000Z-210227T1300Z/ Upper Green River Basin Foothills- Including the city of Pinedale 330 PM MST Fri Feb 26 2021 ...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 6 AM MST SATURDAY... * WHAT...Snow. Additional snow accumulations of up to two inches. * WHERE...Upper Green River Basin Foothills. * WHEN...Until 6 AM MST Saturday. * IMPACTS...Travel could be very difficult. Areas of blowing snow could significantly reduce visibility. The hazardous conditions could impact the morning and evening commutes. PRECAUTIONARY/PREPAREDNESS ACTIONS... Slow down and use caution while traveling. The latest road conditions for the state you are calling from can be obtained by calling 5 1 1. && $$ For more information from the National Weather Service visit http://weather.gov/riw
765 WWUS45 KRIW 270410 WSWRIW URGENT - WINTER WEATHER MESSAGE National Weather Service Riverton WY 910 PM MST Fri Feb 26 2021 ...Snow to continue overnight... WYZ012-024-271300- /O.CON.KRIW.WS.W.0005.000000T0000Z-210227T1300Z/ Teton and Gros Ventre Mountains-Salt River and Wyoming Ranges- 910 PM MST Fri Feb 26 2021 ...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 6 AM MST SATURDAY... * WHAT...Periods of snow. New snowfall of 3 to 6 inches overnight. * WHERE...Teton and Gros Ventre Mountains and Salt River and Wyoming Ranges. * WHEN...Until 6 AM MST Saturday. * IMPACTS...Travel could be difficult, especially over Teton, Togwotee and Salt River Passes. Areas of blowing snow could significantly reduce visibility. The hazardous conditions could impact the morning commute. PRECAUTIONARY/PREPAREDNESS ACTIONS... If you must travel, keep an extra flashlight, food, and water in your vehicle in case of an emergency. The latest road conditions for the state you are calling from can be obtained by calling 5 1 1. && $$ WYZ013-023-271300- /O.CON.KRIW.WS.W.0005.000000T0000Z-210227T1300Z/ Jackson Hole-Star Valley- Including the cities of Jackson, Afton, Alpine, Star Valley Ranch, and Thayne 910 PM MST Fri Feb 26 2021 ...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 6 AM MST SATURDAY... * WHAT...Periods of snow. New snow accumulations of 1 to 3 inches overnight. * WHERE...Jackson Hole and Star Valley. * WHEN...Until 6 AM MST Saturday. * IMPACTS...Travel could be difficult. Areas of blowing snow could significantly reduce visibility. The hazardous conditions could impact the morning commute. PRECAUTIONARY/PREPAREDNESS ACTIONS... If you must travel, keep an extra flashlight, food, and water in your vehicle in case of an emergency. The latest road conditions for the state you are calling from can be obtained by calling 5 1 1. && $$ WYZ001-270600- /O.CON.KRIW.WW.Y.0016.000000T0000Z-210227T0600Z/ Yellowstone National Park- Including the cities of Lake, Mammoth, and Old Faithful 910 PM MST Fri Feb 26 2021 ...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 11 PM MST THIS EVENING... * WHAT...Periods of Snow. Additional snow accumulations of 1 to 3 inches tonight. * WHERE...Yellowstone National Park. * WHEN...Until 11 PM MST this evening. * IMPACTS...Expect difficult travel. PRECAUTIONARY/PREPAREDNESS ACTIONS... Slow down and use caution while traveling. The latest road conditions for the state you are calling from can be obtained by calling 5 1 1. && $$ WYZ025-271300- /O.CON.KRIW.WW.Y.0016.000000T0000Z-210227T1300Z/ Upper Green River Basin Foothills- Including the city of Pinedale 910 PM MST Fri Feb 26 2021 ...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 6 AM MST SATURDAY... * WHAT...Periods of Snow. Additional snow accumulations of 1 to 2 inches overnight. * WHERE...Upper Green River Basin Foothills. * WHEN...Until 6 AM MST Saturday. * IMPACTS...Travel could be difficult. The hazardous conditions could impact the morning commute. PRECAUTIONARY/PREPAREDNESS ACTIONS... Slow down and use caution while traveling. The latest road conditions for the state you are calling from can be obtained by calling 5 1 1. && $$ For more information from the National Weather Service visit http://weather.gov/riw
088 WWUS45 KRIW 270548 WSWRIW URGENT - WINTER WEATHER MESSAGE National Weather Service Riverton WY 1048 PM MST Fri Feb 26 2021 ...Snow to continue overnight... WYZ001-270700- /O.EXP.KRIW.WW.Y.0016.000000T0000Z-210227T0600Z/ Yellowstone National Park- Including the cities of Lake, Mammoth, and Old Faithful 1048 PM MST Fri Feb 26 2021 ...WINTER WEATHER ADVISORY WILL EXPIRE AT 11 PM MST THIS EVENING... Some light snow will occur overnight with a few inches possible. $$ WYZ012-024-271300- /O.CON.KRIW.WS.W.0005.000000T0000Z-210227T1300Z/ Teton and Gros Ventre Mountains-Salt River and Wyoming Ranges- 1048 PM MST Fri Feb 26 2021 ...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 6 AM MST SATURDAY... * WHAT...Periods of snow. New snowfall of 3 to 6 inches overnight. * WHERE...Teton and Gros Ventre Mountains and Salt River and Wyoming Ranges. * WHEN...Until 6 AM MST Saturday. * IMPACTS...Travel could be difficult, especially over Teton, Togwotee and Salt River Passes. Areas of blowing snow could significantly reduce visibility. The hazardous conditions could impact the morning commute. PRECAUTIONARY/PREPAREDNESS ACTIONS... If you must travel, keep an extra flashlight, food, and water in your vehicle in case of an emergency. The latest road conditions for the state you are calling from can be obtained by calling 5 1 1. && $$ WYZ013-023-271300- /O.CON.KRIW.WS.W.0005.000000T0000Z-210227T1300Z/ Jackson Hole-Star Valley- Including the cities of Jackson, Afton, Alpine, Star Valley Ranch, and Thayne 1048 PM MST Fri Feb 26 2021 ...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 6 AM MST SATURDAY... * WHAT...Periods of snow. New snow accumulations of 1 to 3 inches overnight. * WHERE...Jackson Hole and Star Valley. * WHEN...Until 6 AM MST Saturday. * IMPACTS...Travel could be difficult. Areas of blowing snow could significantly reduce visibility. The hazardous conditions could impact the morning commute. PRECAUTIONARY/PREPAREDNESS ACTIONS... If you must travel, keep an extra flashlight, food, and water in your vehicle in case of an emergency. The latest road conditions for the state you are calling from can be obtained by calling 5 1 1. && $$ WYZ025-271300- /O.CON.KRIW.WW.Y.0016.000000T0000Z-210227T1300Z/ Upper Green River Basin Foothills- Including the city of Pinedale 1048 PM MST Fri Feb 26 2021 ...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 6 AM MST SATURDAY... * WHAT...Periods of Snow. Additional snow accumulations of 1 to 2 inches overnight. * WHERE...Upper Green River Basin Foothills. * WHEN...Until 6 AM MST Saturday. * IMPACTS...Travel could be difficult. The hazardous conditions could impact the morning commute. PRECAUTIONARY/PREPAREDNESS ACTIONS... Slow down and use caution while traveling. The latest road conditions for the state you are calling from can be obtained by calling 5 1 1. && $$ For more information from the National Weather Service visit http://weather.gov/riw
850 WWUS45 KRIW 270746 WSWRIW URGENT - WINTER WEATHER MESSAGE National Weather Service Riverton WY 1246 AM MST Sat Feb 27 2021 ...Snow slowly ending in the west, moving East of the Divide ... WYZ012-024-271300- /O.CON.KRIW.WS.W.0005.000000T0000Z-210227T1300Z/ Teton and Gros Ventre Mountains-Salt River and Wyoming Ranges- 1246 AM MST Sat Feb 27 2021 ...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 6 AM MST EARLY THIS MORNING... * WHAT...Periods of snow. New snowfall of 1 to 3 inches overnight. * WHERE...Teton and Gros Ventre Mountains and Salt River and Wyoming Ranges. * WHEN...Until 6 AM MST Saturday. * IMPACTS...Travel could be difficult, especially over Teton, Togwotee and Salt River Passes. Areas of 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. The latest road conditions for the state you are calling from can be obtained by calling 5 1 1. && $$ WYZ013-023-271300- /O.CON.KRIW.WS.W.0005.000000T0000Z-210227T1300Z/ Jackson Hole-Star Valley- Including the cities of Jackson, Afton, Alpine, Star Valley Ranch, and Thayne 1246 AM MST Sat Feb 27 2021 ...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 6 AM MST EARLY THIS MORNING... * WHAT...Periods of snow. New snow accumulations of an inch or two. * WHERE...Jackson Hole and Star Valley. * WHEN...Until 6 AM MST Saturday. * IMPACTS...Travel could be difficult. Areas of blowing snow could significantly reduce visibility. PRECAUTIONARY/PREPAREDNESS ACTIONS... If you must travel, keep an extra flashlight, food, and water in your vehicle in case of an emergency. The latest road conditions for the state you are calling from can be obtained by calling 5 1 1. && $$ WYZ010-271600- /O.NEW.KRIW.WW.Y.0017.210227T1500Z-210228T0200Z/ Northeast Johnson County- Including the city of Buffalo 1246 AM MST Sat Feb 27 2021 ...WINTER WEATHER ADVISORY IN EFFECT FROM 8 AM THIS MORNING TO 7 PM MST THIS EVENING... * WHAT...Snow expected. Total snow accumulations of 2 to 4 inches. Winds gusting as high as 45 mph. * WHERE...Northeast Johnson County. * WHEN...From 8 AM this morning to 7 PM MST this evening. * IMPACTS...Plan on slippery road conditions. Areas of blowing snow could significantly reduce visibility. PRECAUTIONARY/PREPAREDNESS ACTIONS... Slow down and use caution while traveling. The latest road conditions for the state you are calling from can be obtained by calling 5 1 1. && $$ WYZ025-271300- /O.CON.KRIW.WW.Y.0016.000000T0000Z-210227T1300Z/ Upper Green River Basin Foothills- Including the city of Pinedale 1246 AM MST Sat Feb 27 2021 ...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 6 AM MST EARLY THIS MORNING... * WHAT...Periods of Snow. Additional snow accumulations of an inch or two, mainly near and north of Pinedale. * WHERE...Upper Green River Basin Foothills. * WHEN...Until 6 AM MST Saturday. * IMPACTS...Travel could be difficult. PRECAUTIONARY/PREPAREDNESS ACTIONS... Slow down and use caution while traveling. The latest road conditions for the state you are calling from can be obtained by calling 5 1 1. && $$ For more information from the National Weather Service visit http://weather.gov/riw
763 WWUS45 KRIW 271234 WSWRIW URGENT - WINTER WEATHER MESSAGE National Weather Service Riverton WY 534 AM MST Sat Feb 27 2021 ...Snow ending in the west, moving East of the Divide... WYZ012-024-271345- /O.EXP.KRIW.WS.W.0005.000000T0000Z-210227T1300Z/ Teton and Gros Ventre Mountains-Salt River and Wyoming Ranges- 534 AM MST Sat Feb 27 2021 ...WINTER STORM WARNING WILL EXPIRE AT 6 AM MST EARLY THIS MORNING... Steady snow has ended and only snow showers are expected for the rest of the day. $$ WYZ013-023-271345- /O.EXP.KRIW.WS.W.0005.000000T0000Z-210227T1300Z/ Jackson Hole-Star Valley- Including the cities of Jackson, Afton, Alpine, Star Valley Ranch, and Thayne 534 AM MST Sat Feb 27 2021 ...WINTER STORM WARNING WILL EXPIRE AT 6 AM MST EARLY THIS MORNING... Steady snow has ended and any snow showers today should leave only minor accumulations. $$ WYZ025-271345- /O.EXP.KRIW.WW.Y.0016.000000T0000Z-210227T1300Z/ Upper Green River Basin Foothills- Including the city of Pinedale 534 AM MST Sat Feb 27 2021 ...WINTER WEATHER ADVISORY WILL EXPIRE AT 6 AM MST EARLY THIS MORNING... Steady snow has ended and any snow showers today should leave only minor accumulations. $$ WYZ010-280200- /O.CON.KRIW.WW.Y.0017.210227T1500Z-210228T0200Z/ Northeast Johnson County- Including the city of Buffalo 534 AM MST Sat Feb 27 2021 ...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 7 PM MST THIS EVENING... * WHAT...Snow expected. Total snow accumulations of 2 to 4 inches. Winds gusting as high as 45 mph. * WHERE...Northeast Johnson County. * WHEN...Until 7 PM MST this evening. * IMPACTS...Plan on slippery road conditions. Areas of blowing snow could significantly reduce visibility. PRECAUTIONARY/PREPAREDNESS ACTIONS... Slow down and use caution while traveling. The latest road conditions for the state you are calling from can be obtained by calling 5 1 1. && $$ For more information from the National Weather Service visit http://weather.gov/riw
The office that day
Everything else NWS Riverton, WY issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Feb 25, 2:29 AM MST | High Wind Warning | RIW | Natrona | 19 hr |
| Feb 25, 2:52 AM MST | Winter Weather Advisory | RIW | Park, Sublette, Teton | 51 hr |
Nearby
Winter Storm Warnings in Wyoming, 2021Every winter storm warning in 2021
Sources
The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.