Alert archive / Wyoming / Blizzard Warnings in 2019
Blizzard Warning 1, NWS Riverton, WY
NWS Riverton, WY issued this blizzard warning at Nov 28, 2019, 4:39 PM MST for Johnson County, Wyoming. It took effect at Nov 29, 2019, 2:00 PM MST. It was in force for 28 hr. 12 reports came from inside the area while it was in force.
The area
The counties it named, with what was reported inside it.
The facts
- Issued
- Nov 28, 2019, 4:39 PM MST (23:39 UTC)
- In effect from
- Nov 29, 2019, 2:00 PM MST
- Expired
- Nov 30, 2019, 6:00 PM MST
- In force
- 28 hr
- Issued by
- NWS Riverton, WY
County Johnson County, WY
The radar
The Riverton/Lander radar (KRIW), 187 km from the middle of the area, began a volume at 23:43 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.
What was reported inside it
| Time | Report | Where | Remark |
|---|---|---|---|
| Nov 30, 7:00 AM MST | SNOW 2 | 5 Ssw Buffalo, WY | COCORAHS STATION WY-JN-14 BUFFALO 4 SSW. |
| Nov 30, 7:00 AM MST | SNOW 5 | 13 Sse Buffalo, WY | COCORAHS STATION WY-JN-33 BUFFALO 13 SSE. |
| Nov 30, 10:52 AM MST | SNOW 4 | 27 Nw Buffalo, WY | LITTLE GOOSE SNOTEL |
| Nov 30, 10:52 AM MST | SNOW 4 | 27 Nw Buffalo, WY | LITTLE GOOSE SNOTEL. |
| Nov 30, 10:52 AM MST | SNOW 5 | 17 W Buffalo, WY | CLOUD PEAK RESERVOIR SNOTEL |
| Nov 30, 10:52 AM MST | SNOW 5 | 17 W Buffalo, WY | CLOUD PEAK RESERVOIR SNOTEL. |
| Nov 30, 10:52 AM MST | HEAVY SNOW 6 | 14 Wnw Mayoworth, WY | BEAR TRAP MEADOW SNOTEL |
| Nov 30, 10:52 AM MST | HEAVY SNOW 6 | 14 Wnw Mayoworth, WY | BEAR TRAP MEADOW SNOTEL. |
| Nov 30, 11:31 AM MST | SNOW 5 | 13 Sse Buffalo, WY | . |
| Nov 30, 11:31 AM MST | SNOW 5 | 13 Sse Buffalo, WY | |
| Nov 30, 11:32 AM MST | SNOW 5 | 17 Nnw Kaycee, WY | . |
| Nov 30, 11:32 AM MST | SNOW 5 | 17 Nnw Kaycee, WY |
Local storm reports filed while the alert was in force, from inside its polygon or its counties.
The nearest sounding before it
Riverton, WY (KRIW), launched 12:00Z, 11.7 hours before the alert went out and 182 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
- 1069 m above ground
- 0-6 km bulk shear
- 95 kt
- 0-1 km storm-relative helicity
- 500 m²/s²
- 0-3 km storm-relative helicity
- 470 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
975 WWUS45 KRIW 282339 WSWRIW URGENT - WINTER WEATHER MESSAGE National Weather Service Riverton WY 439 PM MST Thu Nov 28 2019 ...Major Winter Storm Impacting Western and Central Wyoming this long Thanksgiving Holiday Weekend... .A major storm will track east across the Great Basin through Friday, and then reform and strengthen just east of the Rockies later Friday through Saturday. Snow is expected to become heavier and more widespread later tonight over the west and southwest. The snow will move from west to east Friday into Friday night, as the storm intensifies. Moderate to heavy snow is expected across many areas. Strong winds are also expected, especially for Johnson County Friday night and Saturday where a blizzard warning is in effect. WYZ010-011-291315- /O.UPG.KRIW.WS.A.0014.191129T2100Z-191201T0100Z/ /O.NEW.KRIW.BZ.W.0001.191129T2100Z-191201T0100Z/ Northeast Johnson County-Southeast Johnson County- Including the cities of Buffalo and Kaycee 439 PM MST Thu Nov 28 2019 ...BLIZZARD WARNING IN EFFECT FROM 2 PM FRIDAY TO 6 PM MST SATURDAY... * WHAT...Blizzard conditions expected. Total snow accumulations of 6 to 9 inches. Winds gusting as high as 60 mph. * WHERE...Johnson County. * WHEN...From 2 PM Friday to 6 PM MST Saturday. * IMPACTS...Travel will be very difficult to impossible. Widespread blowing snow will significantly reduce visibility to near zero. * ADDITIONAL DETAILS...The snow will be mixed with freezing drizzle at the onset of the event Friday afternoon. This could result in a hidden layer of ice beneath the snow covered roads, making travel extremely hazardous. Interstates 25 and 90 will be severely impacted by this storm. PRECAUTIONARY/PREPAREDNESS ACTIONS... Travel should be restricted to emergencies only. If you must travel, have a winter survival kit with you. If you get stranded, stay with your vehicle. The latest road conditions for the state you are calling from can be obtained by calling 5 1 1. && $$ WYZ012>016-024-025-291315- /O.UPG.KRIW.WS.A.0014.191129T0700Z-191130T1300Z/ /O.NEW.KRIW.WS.W.0015.191129T0700Z-191130T1300Z/ Teton and Gros Ventre Mountains-Jackson Hole- Wind River Mountains West-Wind River Mountains East- Upper Wind River Basin-Salt River and Wyoming Ranges- Upper Green River Basin Foothills- Including the cities of Jackson, Dubois, and Pinedale 439 PM MST Thu Nov 28 2019 ...WINTER STORM WARNING IN EFFECT FROM MIDNIGHT TONIGHT TO 6 AM MST SATURDAY... * WHAT...Periods of snow, heavy at times. Total snow accumulations of 4 to 8 inches in the lower elevations, and 10 to 20 inches in the mountains. Isolated 2 feet of snow is possible in the mountains. * WHERE...Jackson Hole, the Upper Green River Basin Foothills including Pinedale, the Upper Wind River Basin including Dubois, the Teton and Gros Ventre Mountains, Salt and Wyoming Mountains, and the Wind River Mountains. * WHEN...From midnight tonight to 6 AM Saturday. * IMPACTS...Travel will be very difficult to impossible. Blowing snow will significantly reduce visibility to near zero at times including over South Pass. PRECAUTIONARY/PREPAREDNESS ACTIONS... If you must travel, keep an extra flashlight, food, and water in your vehicle in case of an emergency. The latest road conditions for the state you are calling from can be obtained by calling 5 1 1. && $$ WYZ003>007-017-018-291315- /O.UPG.KRIW.WS.A.0014.191129T1300Z-191130T1600Z/ /O.NEW.KRIW.WS.W.0015.191129T1300Z-191130T1600Z/ Cody Foothills-North Big Horn Basin-Southwest Big Horn Basin- Southeast Big Horn Basin-Owl Creek and Bridger Mountains- Wind River Basin-Lander Foothills- Including the cities of Clark, Cody, Meeteetse, Basin, Greybull, Lovell, Powell, Shell, Thermopolis, Ten Sleep, Worland, Riverton, Shoshoni, and Lander 439 PM MST Thu Nov 28 2019 ...WINTER STORM WARNING IN EFFECT FROM 6 AM FRIDAY TO 9 AM MST SATURDAY... * WHAT...Heavy snow expected. Total snow accumulations of 4 to 10 inches. Winds gusting as high as 35 mph. * WHERE...Portions of central and north central Wyoming. * WHEN...From 6 AM Friday to 9 AM MST Saturday. * IMPACTS...Travel could be very difficult. Blowing snow will 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. && $$ WYZ008-009-291315- /O.UPG.KRIW.WS.A.0014.191129T2100Z-191201T0100Z/ /O.NEW.KRIW.WS.W.0015.191129T2100Z-191201T0100Z/ Bighorn Mountains West-Bighorn Mountains Southeast- 439 PM MST Thu Nov 28 2019 ...WINTER STORM WARNING IN EFFECT FROM 2 PM FRIDAY TO 6 PM MST SATURDAY... * WHAT...Heavy snow expected. Total snow accumulations of 8 to 14 inches. Winds gusting as high as 50 to 60 mph in exposed areas. * WHERE...Bighorn Mountains. * WHEN...From 2 PM Friday to 6 PM MST Saturday. * IMPACTS...Travel will be very difficult to impossible. Blowing snow will significantly reduce visibility. * ADDITIONAL DETAILS...Powder River and Granite Pass will likely receive 10 to 12 inches of snow. Elevations above 10000 feet could see up to 20 inches of snow. PRECAUTIONARY/PREPAREDNESS ACTIONS... If you must travel, keep an extra flashlight, food, and water in your vehicle in case of an emergency. The latest road conditions for the state you are calling from can be obtained by calling 5 1 1. && $$ WYZ020-022-291315- /O.UPG.KRIW.WS.A.0014.191129T2100Z-191201T0100Z/ /O.NEW.KRIW.WS.W.0015.191129T2100Z-191201T0100Z/ Natrona County Lower Elevations-Casper Mountain- Including the city of Casper 439 PM MST Thu Nov 28 2019 ...WINTER STORM WARNING IN EFFECT FROM 2 PM FRIDAY TO 6 PM MST SATURDAY... * WHAT...Periods of snow, heavy at times. Total snow accumulations of 5 to 10 inches across the lower elevations, and 10 to 18 inches on Casper Mountain. * WHERE...Natrona County including Casper and Casper Mountain. * WHEN...From 2 PM Friday to 6 PM MST Saturday. * IMPACTS...Travel will be very difficult. Blowing snow will significantly reduce visibility. * ADDITIONAL DETAILS...The snow will be mixed with freezing drizzle at the onset of the event Friday afternoon. This could result in a hidden layer of ice beneath the snow covered roads, making travel extremely hazardous. Travel on Interstate 25 as well as on Highways 26 and 220 will become extremely difficult. 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. && $$ WYZ023-291315- /O.UPG.KRIW.WS.A.0014.191129T0700Z-191130T1300Z/ /O.NEW.KRIW.WW.Y.0041.191129T0700Z-191130T1300Z/ Star Valley- Including the cities of Afton, Alpine, Star Valley Ranch, and Thayne 439 PM MST Thu Nov 28 2019 ...WINTER WEATHER ADVISORY IN EFFECT FROM MIDNIGHT TONIGHT TO 6 AM MST SATURDAY... * WHAT...Snow expected. Total snow accumulations of 3 to 5 inches. * WHERE...Star Valley. * WHEN...From midnight tonight to 6 AM MST Saturday. * IMPACTS...Travel will be difficult. PRECAUTIONARY/PREPAREDNESS ACTIONS... Slow down and use caution while traveling. The latest road conditions for the state you are calling from can be obtained by calling 5 1 1. && $$ WYZ026-027-291315- /O.UPG.KRIW.WS.A.0014.191129T0700Z-191130T1300Z/ /O.NEW.KRIW.WW.Y.0041.191129T0700Z-191130T1300Z/ Upper Green River Basin-South Lincoln County- Including the cities of La Barge, Big Piney, Farson, Kemmerer, and Cokeville 439 PM MST Thu Nov 28 2019 ...WINTER WEATHER ADVISORY IN EFFECT FROM MIDNIGHT TONIGHT TO 6 AM MST SATURDAY... * WHAT...Snow expected. Total snow accumulations will range from 3 inches in Farson to 5 inches in Big Piney. * WHERE...Upper Green River Basin and South Lincoln County. * WHEN...From midnight tonight to 6 AM MST Saturday. * IMPACTS...Travel will 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. && $$ WYZ019-291315- /O.UPG.KRIW.WS.A.0014.191129T1300Z-191130T1600Z/ /O.NEW.KRIW.WW.Y.0041.191129T1300Z-191130T1600Z/ Green Mountains and Rattlesnake Range- Including the city of Jeffrey City 439 PM MST Thu Nov 28 2019 ...WINTER WEATHER ADVISORY IN EFFECT FROM 6 AM FRIDAY TO 9 AM MST SATURDAY... * WHAT...Snow expected. Total snow accumulations of 3 to 5 inches. Winds gusting as high as 45 mph. * WHERE...Green Mountains and Rattlesnake Range. * WHEN...From 6 AM Friday to 9 AM MST Saturday. * IMPACTS...Plan on slippery road conditions. Considerable blowing snow will significantly reduce visibility. * ADDITIONAL DETAILS...Travel along Highway 287 from Beaver Rim through Sweetwater Station, Jeffrey City and on to Muddy Gap will become especially hazardous due to considerable blowing and drifting snow, which could reduce the visibility to near zero at times. PRECAUTIONARY/PREPAREDNESS ACTIONS... Slow down and use caution while traveling. The latest road conditions for the state you are calling from can be obtained by calling 5 1 1. && $$ WYZ028-029-291315- /O.NEW.KRIW.WW.Y.0041.191129T0700Z-191130T1300Z/ Rock Springs and Green River-Flaming Gorge- Including the cities of Rock Springs and Green River 439 PM MST Thu Nov 28 2019 ...WINTER WEATHER ADVISORY IN EFFECT FROM MIDNIGHT TONIGHT TO 6 AM MST SATURDAY... * WHAT...Snow expected. Total snow accumulations of 2 to 4 inches. Winds gusting as high as 45 mph. * WHERE...Rock Springs and Green River and Flaming Gorge. * WHEN...From midnight tonight to 6 AM MST Saturday. * IMPACTS...Plan on slippery road conditions. * ADDITIONAL DETAILS...Travel along Interstate 80 will become especially hazardous due to considerable blowing and drifting snow, reducing the visibility to near zero at times. 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. && $$ WYZ001-002-291315- /O.NEW.KRIW.WW.Y.0041.191129T0700Z-191130T1300Z/ Yellowstone National Park-Absaroka Mountains- Including the cities of Lake, Mammoth, and Old Faithful 439 PM MST Thu Nov 28 2019 ...WINTER WEATHER ADVISORY IN EFFECT FROM MIDNIGHT TONIGHT TO 6 AM MST SATURDAY... * WHAT...Snow expected. Total snow accumulations of 4 to 11 inches. Winds gusting as high as 35 mph. * WHERE...Yellowstone National Park and Absaroka Mountains. * WHEN...From midnight tonight to 6 AM MST Saturday. * IMPACTS...Travel will be very difficult. Blowing snow will significantly reduce visibility. The hazardous conditions could impact the morning or evening commute. * ADDITIONAL DETAILS...Travel along the Chief Joseph Highway in the eastern Absaroka Mountains could become especially hazardous due to blowing and drifting snow. PRECAUTIONARY/PREPAREDNESS ACTIONS... Slow down and use caution while traveling. The latest road conditions for the state you are calling from can be obtained by calling 5 1 1. && $$ WYZ030-291315- /O.NEW.KRIW.WW.Y.0041.191129T1300Z-191130T1600Z/ East Sweetwater County- Including the city of Wamsutter 439 PM MST Thu Nov 28 2019 ...WINTER WEATHER ADVISORY IN EFFECT FROM 6 AM FRIDAY TO 9 AM MST SATURDAY... * WHAT...Snow expected. Total snow accumulations of 1 to 3 inches. Winds gusting as high as 50 mph. * WHERE...East Sweetwater County. * WHEN...From 6 AM Friday to 9 AM MST Saturday. * IMPACTS...Plan on slippery road conditions. Blowing snow will significantly reduce visibility. The hazardous conditions will impact the morning or evening commute. Gusty winds could bring down tree branches. * ADDITIONAL DETAILS...Travel along Interstate 80 will become especially hazardous due to considerable blowing and drifting snow, reducing the visibility to near zero at times. 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. && $$ For more information from the National Weather Service visit http://weather.gov/riw
7 follow-up statements
742 WWUS45 KRIW 290947 WSWRIW URGENT - WINTER WEATHER MESSAGE National Weather Service Riverton WY 247 AM MST Fri Nov 29 2019 ...Major Winter Storm Impacting Western and Central Wyoming this long Thanksgiving Holiday Weekend... .A storm will effect Wyoming through Saturday. Snow is expected to spread from west to east through tonight. Moderate to heavy snow is expected across many areas. Strong winds are also expected, especially for Johnson County Friday night and Saturday where a blizzard warning is in effect. WYZ010-011-292300- /O.CON.KRIW.BZ.W.0001.191129T2100Z-191201T0100Z/ Northeast Johnson County-Southeast Johnson County- Including the cities of Buffalo and Kaycee 247 AM MST Fri Nov 29 2019 ...BLIZZARD WARNING REMAINS IN EFFECT FROM 2 PM THIS AFTERNOON TO 6 PM MST SATURDAY... * WHAT...Blizzard conditions expected. Total snow accumulations of 6 to 9 inches. Winds gusting as high as 60 mph. * WHERE...Johnson County. * WHEN...From 2 PM Friday to 6 PM MST Saturday. The heaviest snow and most impactful conditions are expected from later tonight and Saturday morning. * IMPACTS...Travel will be very difficult to impossible. Widespread blowing snow will significantly reduce visibility to near zero. * ADDITIONAL DETAILS...The snow will be mixed with freezing drizzle at the onset of the event Friday afternoon. This could result in a hidden layer of ice beneath the snow covered roads, making travel extremely hazardous. Interstates 25 and 90 will be severely impacted by this storm. PRECAUTIONARY/PREPAREDNESS ACTIONS... Travel should be restricted to emergencies only. If you must travel, have a winter survival kit with you. If you get stranded, stay with your vehicle. The latest road conditions for the state you are calling from can be obtained by calling 5 1 1. && $$ WYZ012>016-024-025-292300- /O.CON.KRIW.WS.W.0015.000000T0000Z-191130T1300Z/ Teton and Gros Ventre Mountains-Jackson Hole- Wind River Mountains West-Wind River Mountains East- Upper Wind River Basin-Salt River and Wyoming Ranges- Upper Green River Basin Foothills- Including the cities of Jackson, Dubois, and Pinedale 247 AM MST Fri Nov 29 2019 ...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 6 AM MST SATURDAY... * WHAT...Periods of snow, heavy at times. Total snow accumulations of 4 to 8 inches in the lower elevations, and 10 to 20 inches in the mountains. Isolated 2 feet of snow is possible in the mountains. * WHERE...Jackson Hole, the Upper Green River Basin Foothills including Pinedale, the Upper Wind River Basin including Dubois, the Teton and Gros Ventre Mountains, Salt and Wyoming Mountains, and the Wind River Mountains. * WHEN...From midnight tonight to 6 AM Saturday. * IMPACTS...Travel will be very difficult to impossible. Blowing snow will significantly reduce visibility to near zero at times including over South Pass. 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. && $$ WYZ003>007-017-018-292300- /O.CON.KRIW.WS.W.0015.191129T1300Z-191130T1600Z/ Cody Foothills-North Big Horn Basin-Southwest Big Horn Basin- Southeast Big Horn Basin-Owl Creek and Bridger Mountains- Wind River Basin-Lander Foothills- Including the cities of Clark, Cody, Meeteetse, Basin, Greybull, Lovell, Powell, Shell, Thermopolis, Ten Sleep, Worland, Riverton, Shoshoni, and Lander 247 AM MST Fri Nov 29 2019 ...WINTER STORM WARNING REMAINS IN EFFECT FROM 6 AM THIS MORNING TO 9 AM MST SATURDAY... * WHAT...Heavy snow expected. Total snow accumulations of 4 to 10 inches, with locally higher amounts near Thermopolis and Ten Sleep. Mainly light snow is expected today with up to 2 inches of accumulation, with the heaviest snow expected tonight. Winds gusting as high as 35 mph. * WHERE...Portions of central and north central Wyoming. * WHEN...From 6 AM Friday to 9 AM MST Saturday. * IMPACTS...Travel could be very difficult. Blowing snow will significantly reduce visibility. PRECAUTIONARY/PREPAREDNESS ACTIONS... If you must travel, keep an extra flashlight, food, and water in your vehicle in case of an emergency. The latest road conditions for the state you are calling from can be obtained by calling 5 1 1. && $$ WYZ008-009-292300- /O.CON.KRIW.WS.W.0015.191129T2100Z-191201T0100Z/ Bighorn Mountains West-Bighorn Mountains Southeast- 247 AM MST Fri Nov 29 2019 ...WINTER STORM WARNING REMAINS IN EFFECT FROM 2 PM THIS AFTERNOON TO 6 PM MST SATURDAY... * WHAT...Heavy snow expected. Total snow accumulations of 8 to 16 inches. Winds gusting as high as 50 to 60 mph in exposed areas. * WHERE...Bighorn Mountains. * WHEN...From 2 PM Friday to 6 PM MST Saturday. * IMPACTS...Travel will be very difficult to impossible. Blowing snow will significantly reduce visibility. * ADDITIONAL DETAILS...Powder River and Granite Pass will likely receive 6 to 10 inches of snow. Elevations above 10000 feet could see up to 16 inches of snow. 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. && $$ WYZ020-022-292300- /O.CON.KRIW.WS.W.0015.191129T2100Z-191201T0100Z/ Natrona County Lower Elevations-Casper Mountain- Including the city of Casper 247 AM MST Fri Nov 29 2019 ...WINTER STORM WARNING REMAINS IN EFFECT FROM 2 PM THIS AFTERNOON TO 6 PM MST SATURDAY... * WHAT...Periods of snow, heavy at times. Total snow accumulations of 5 to 10 inches across the lower elevations, and 10 to 15 inches on Casper Mountain. The heaviest snow is expected late tonight into Saturday morning. * WHERE...Natrona County including Casper and Casper Mountain. * WHEN...From 2 PM Friday to 6 PM MST Saturday. * IMPACTS...Travel will be very difficult. Blowing snow will significantly reduce visibility. * ADDITIONAL DETAILS...The snow will be mixed with freezing drizzle at the onset of the event Friday afternoon. This could result in a hidden layer of ice beneath the snow covered roads, making travel extremely hazardous. Travel on Interstate 25 as well as on Highways 26 and 220 will become extremely difficult. PRECAUTIONARY/PREPAREDNESS ACTIONS... If you must travel, keep an extra flashlight, food, and water in your vehicle in case of an emergency. The latest road conditions for the state you are calling from can be obtained by calling 5 1 1. && $$ WYZ023-292300- /O.CON.KRIW.WW.Y.0041.000000T0000Z-191130T1300Z/ Star Valley- Including the cities of Afton, Alpine, Star Valley Ranch, and Thayne 247 AM MST Fri Nov 29 2019 ...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 6 AM MST SATURDAY... * WHAT...Snow expected. Total snow accumulations of 3 to 6 inches. * WHERE...Star Valley. * WHEN...From midnight tonight to 6 AM MST Saturday. * IMPACTS...Travel will 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. && $$ WYZ026-027-292300- /O.CON.KRIW.WW.Y.0041.000000T0000Z-191130T1300Z/ Upper Green River Basin-South Lincoln County- Including the cities of La Barge, Big Piney, Farson, Kemmerer, and Cokeville 247 AM MST Fri Nov 29 2019 ...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 6 AM MST SATURDAY... * WHAT...Snow expected. Total snow accumulations will range from 3 inches in Farson to 5 inches in Big Piney. * WHERE...Upper Green River Basin and South Lincoln County. * WHEN...From midnight tonight to 6 AM MST Saturday. * IMPACTS...Travel will be difficult. PRECAUTIONARY/PREPAREDNESS ACTIONS... Slow down and use caution while traveling. The latest road conditions for the state you are calling from can be obtained by calling 5 1 1. && $$ WYZ028-029-292300- /O.CON.KRIW.WW.Y.0041.000000T0000Z-191130T1300Z/ Rock Springs and Green River-Flaming Gorge- Including the cities of Rock Springs and Green River 247 AM MST Fri Nov 29 2019 ...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 6 AM MST SATURDAY... * WHAT...Snow expected. Total snow accumulations of 2 to 4 inches. Winds gusting as high as 45 mph. * WHERE...Rock Springs and Green River and Flaming Gorge. * WHEN...From midnight tonight to 6 AM MST Saturday. * IMPACTS...Plan on slippery road conditions. * ADDITIONAL DETAILS...Travel along Interstate 80 will become especially hazardous due to considerable blowing and drifting snow, reducing the visibility to near zero at times. 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. && $$ WYZ001-002-292300- /O.CON.KRIW.WW.Y.0041.000000T0000Z-191130T1300Z/ Yellowstone National Park-Absaroka Mountains- Including the cities of Lake, Mammoth, and Old Faithful 247 AM MST Fri Nov 29 2019 ...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 6 AM MST SATURDAY... * WHAT...Snow expected. Total snow accumulations of 6 to 11 inches. Winds gusting as high as 35 mph. * WHERE...Yellowstone National Park and Absaroka Mountains. * WHEN...From midnight tonight to 6 AM MST Saturday. * IMPACTS...Travel will be very difficult. Blowing snow will significantly reduce visibility. The hazardous conditions could impact the morning or evening commute. * ADDITIONAL DETAILS...Travel along the Chief Joseph Highway in the eastern Absaroka Mountains could become especially hazardous due to blowing and drifting snow. PRECAUTIONARY/PREPAREDNESS ACTIONS... Slow down and use caution while traveling. The latest road conditions for the state you are calling from can be obtained by calling 5 1 1. && $$ WYZ019-030-292300- /O.CON.KRIW.WW.Y.0041.191129T1300Z-191130T1600Z/ Green Mountains and Rattlesnake Range-East Sweetwater County- Including the cities of Jeffrey City and Wamsutter 247 AM MST Fri Nov 29 2019 ...WINTER WEATHER ADVISORY REMAINS IN EFFECT FROM 6 AM THIS MORNING TO 9 AM MST SATURDAY... * WHAT...Snow expected. Total snow accumulations of 2 to 5 inches. Winds gusting as high as 50 mph. * WHERE...East Sweetwater County. * WHEN...From 6 AM Friday to 9 AM MST Saturday. * IMPACTS...Plan on slippery road conditions. Blowing snow will significantly reduce visibility. The hazardous conditions will impact the morning or evening commute. Gusty winds could bring down tree branches. * ADDITIONAL DETAILS...Travel along Interstate 80 will become especially hazardous due to considerable blowing and drifting snow, reducing the visibility to near zero at times. 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. && $$ For more information from the National Weather Service visit http://weather.gov/riw
633 WWUS45 KRIW 292149 WSWRIW URGENT - WINTER WEATHER MESSAGE National Weather Service Riverton WY 249 PM MST Fri Nov 29 2019 ...Widespread Snow and Increasing Wind to Impact Western and Central Wyoming through Saturday... .A winter storm will effect Wyoming through Saturday. Snow is expected to spread from west-to-east Friday night. Moderate to heavy snow is likely in many areas from Friday evening until early Saturday morning. Wind speeds will increase early Saturday morning and persist through at least midday Saturday, especially in Johnson County where a blizzard warning is in effect. WYZ010-011-301300- /O.CON.KRIW.BZ.W.0001.000000T0000Z-191201T0100Z/ Northeast Johnson County-Southeast Johnson County- Including the cities of Buffalo and Kaycee 249 PM MST Fri Nov 29 2019 ...BLIZZARD WARNING REMAINS IN EFFECT UNTIL 6 PM MST SATURDAY... * WHAT...Freezing drizzle before blizzard conditions develop. Total snow accumulations 6 to 9 inches. Wind gusts 40 to 60 mph. * WHERE...Johnson County. * WHEN...Until 6 PM MST Saturday. * IMPACTS...Travel will be very difficult to impossible. Widespread blowing snow will significantly reduce visibility to near zero. * ADDITIONAL DETAILS...Freezing drizzle will continue into Friday evening, especially across southern Johnson County. This could result in a hidden layer of ice beneath the snow covered roads, making travel extremely hazardous. Interstates 25 and 90 will be severely impacted by this storm. Wind gusts will be strongest across the Interstate 90 corridor across northern Johnson County during the day Saturday. PRECAUTIONARY/PREPAREDNESS ACTIONS... Travel should be restricted to emergencies only. If you must travel, have a winter survival kit with you. If you get stranded, stay with your vehicle. The latest road conditions for the state you are calling from can be obtained by calling 5 1 1. && $$ WYZ012>016-024-025-301300- /O.CON.KRIW.WS.W.0015.000000T0000Z-191130T1300Z/ Teton and Gros Ventre Mountains-Jackson Hole- Wind River Mountains West-Wind River Mountains East- Upper Wind River Basin-Salt River and Wyoming Ranges- Upper Green River Basin Foothills- Including the cities of Jackson, Dubois, and Pinedale 249 PM MST Fri Nov 29 2019 ...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 6 AM MST SATURDAY... * WHAT...Periods of snow, heavy at times through Friday evening, before decreasing. Total snow accumulations of 4 to 8 inches in the lower elevations, and 10 to 20 inches in the mountains. Isolated mountain snow accumulations of two feet possible. * WHERE...Jackson Hole, the Upper Green River Basin Foothills including Pinedale, the Upper Wind River Basin including Dubois, the Teton and Gros Ventre Mountains, Salt and Wyoming Mountains, and the Wind River Mountains. * WHEN...Until 6 AM MST Saturday. * IMPACTS...Travel will be very difficult. Blowing snow will significantly reduce visibility to near zero at times over South Pass. 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. && $$ WYZ003>007-017-018-301300- /O.CON.KRIW.WS.W.0015.000000T0000Z-191130T1600Z/ Cody Foothills-North Big Horn Basin-Southwest Big Horn Basin- Southeast Big Horn Basin-Owl Creek and Bridger Mountains- Wind River Basin-Lander Foothills- Including the cities of Clark, Cody, Meeteetse, Basin, Greybull, Lovell, Powell, Shell, Thermopolis, Ten Sleep, Worland, Riverton, Shoshoni, and Lander 249 PM MST Fri Nov 29 2019 ...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 9 AM MST SATURDAY... * WHAT...Snow, moderate to heavy at times Friday night with accumulations of Heavy snow expected. Total snow accumulations of 4 to 8 inches, with locally higher amounts near Thermopolis and Ten Sleep. Northwest wind 20 to 35 mph. * WHERE...Portions of central and north central Wyoming. * WHEN...Until 9 AM MST Saturday. * IMPACTS...Travel could be very difficult. Blowing snow will significantly reduce visibility. The wind will be strongest over the eastern portion of the Bighorn Basin, especially Big Horn County. PRECAUTIONARY/PREPAREDNESS ACTIONS... If you must travel, keep an extra flashlight, food, and water in your vehicle in case of an emergency. The latest road conditions for the state you are calling from can be obtained by calling 5 1 1. && $$ WYZ008-009-301300- /O.CON.KRIW.WS.W.0015.000000T0000Z-191201T0100Z/ Bighorn Mountains West-Bighorn Mountains Southeast- 249 PM MST Fri Nov 29 2019 ...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 6 PM MST SATURDAY... * WHAT...Heavy snow expected. Total snow accumulations of 6 to 10 inches, with up to 14 inches over the southern end of the Bighorn Range. Winds gusting as high as 50 to 60 mph in exposed areas. * WHERE...Bighorn Mountains. * WHEN...Until 6 PM MST Saturday. * IMPACTS...Travel could be very difficult to impossible at times over Powder River Pass and Granite Pass where blowing snow will 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. && $$ WYZ020-022-301300- /O.CON.KRIW.WS.W.0015.000000T0000Z-191201T0100Z/ Natrona County Lower Elevations-Casper Mountain- Including the city of Casper 249 PM MST Fri Nov 29 2019 ...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 6 PM MST SATURDAY... * WHAT...Freezing drizzle across northern Natrona County before snow increases county-wide Friday evening. Total snow accumulations 5 to 10 inches across the lower elevations, and 10 to 15 inches on Casper Mountain. The heaviest snow is expected between Friday evening and sunrise Saturday. Wind becoming northwest 15 to 25 mph early Saturday morning. * WHERE...Natrona County including Casper and Casper Mountain. * WHEN...Until 6 PM MST Saturday. * IMPACTS...Travel will be very difficult. Blowing snow will significantly reduce visibility. * ADDITIONAL DETAILS...Freezing drizzle will continue into Friday evening, especially across northern Natrona County. This could result in a hidden layer of ice beneath the snow covered roads, making travel extremely hazardous. Travel on Interstate 25 as well as on Highways 26 and 220 will become extremely difficult by sunrise Saturday due to the snow and wind. PRECAUTIONARY/PREPAREDNESS ACTIONS... If you must travel, keep an extra flashlight, food, and water in your vehicle in case of an emergency. The latest road conditions for the state you are calling from can be obtained by calling 5 1 1. && $$ WYZ023-301300- /O.CON.KRIW.WW.Y.0041.000000T0000Z-191130T1300Z/ Star Valley- Including the cities of Afton, Alpine, Star Valley Ranch, and Thayne 249 PM MST Fri Nov 29 2019 ...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 6 AM MST SATURDAY... * WHAT...Snow. Additional snow accumulations of 3 to 5 inches, mainly before 11 PM Friday. * WHERE...Star Valley. * WHEN...Until 6 AM MST Saturday. * IMPACTS...Plan on icy and hazardous conditions. 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. && $$ WYZ026-027-301300- /O.CON.KRIW.WW.Y.0041.000000T0000Z-191130T1300Z/ Upper Green River Basin-South Lincoln County- Including the cities of La Barge, Big Piney, Farson, Kemmerer, and Cokeville 249 PM MST Fri Nov 29 2019 ...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 6 AM MST SATURDAY... * WHAT...Snow. Additional snow accumulations of 1 to 3 inches. Wind becoming northwest 15 to 25 mph early Saturday morning. * WHERE...Upper Green River Basin and South Lincoln County. * WHEN...Until 6 AM MST Saturday. * IMPACTS...Plan on icy and hazardous conditions. PRECAUTIONARY/PREPAREDNESS ACTIONS... Slow down and use caution while traveling. The latest road conditions for the state you are calling from can be obtained by calling 5 1 1. && $$ WYZ028-029-301300- /O.CON.KRIW.WW.Y.0041.000000T0000Z-191130T1300Z/ Rock Springs and Green River-Flaming Gorge- Including the cities of Rock Springs and Green River 249 PM MST Fri Nov 29 2019 ...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 6 AM MST SATURDAY... * WHAT...Snow. Additional snow accumulations of 1 to 3 inches. West wind increasing to 30 to 45 mph Friday night. * WHERE...Rock Springs, Green River, and Flaming Gorge. * WHEN...Until 6 AM MST Saturday. * IMPACTS...Plan on icy and slick road conditions. * ADDITIONAL DETAILS...Travel along Interstate 80 will become especially hazardous due to considerable blowing and drifting snow Friday night, reducing the visibility to near zero at times. 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. && $$ WYZ001-002-301300- /O.CON.KRIW.WW.Y.0041.000000T0000Z-191130T1300Z/ Yellowstone National Park-Absaroka Mountains- Including the cities of Lake, Mammoth, and Old Faithful 249 PM MST Fri Nov 29 2019 ...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 6 AM MST SATURDAY... * WHAT...Snow. Additional snow accumulations of 3 to 6 inches. * WHERE...Yellowstone National Park and Absaroka Mountains. * WHEN...Until 6 AM MST Saturday. * IMPACTS...Travel will be very difficult. Blowing snow will significantly reduce visibility. * ADDITIONAL DETAILS...Travel along the Chief Joseph Highway in the eastern Absaroka Mountains could become especially hazardous due to blowing and drifting snow. PRECAUTIONARY/PREPAREDNESS ACTIONS... Slow down and use caution while traveling. The latest road conditions for the state you are calling from can be obtained by calling 5 1 1. && $$ WYZ019-030-301300- /O.CON.KRIW.WW.Y.0041.000000T0000Z-191130T1600Z/ Green Mountains and Rattlesnake Range-East Sweetwater County- Including the cities of Jeffrey City and Wamsutter 249 PM MST Fri Nov 29 2019 ...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 9 AM MST SATURDAY... * WHAT...Snow. Additional snow accumulations of 3 to 5 inches. Northwest wind increasing to 15 to 30 mph Friday night. * WHERE...East Sweetwater County and Areas Around Jeffrey City. * WHEN...Until 9 AM MST Saturday. * IMPACTS...Plan on slippery road conditions. Patchy blowing snow could significantly reduce visibility. The hazardous conditions could impact the evening commute. Gusty winds could bring down tree branches. * ADDITIONAL DETAILS...Travel along Interstate 80 will become especially hazardous due to considerable blowing and drifting snow, reducing the visibility to near zero at times. 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. && $$ For more information from the National Weather Service visit http://weather.gov/riw
070 WWUS45 KRIW 301122 WSWRIW URGENT - WINTER WEATHER MESSAGE National Weather Service Riverton WY 422 AM MST Sat Nov 30 2019 ...Widespread Snow and Increasing Wind to Impact Western and Central Wyoming today... .A winter storm will effect Wyoming through today. Snow will taper off across the west this morning and then end from west to east through the day. Strong winds will continue in northern Wyoming with blizzard conditions remaining likely across Johnson County. WYZ026-028-029-301230- /O.CAN.KRIW.WW.Y.0041.000000T0000Z-191130T1300Z/ Upper Green River Basin-Rock Springs and Green River- Flaming Gorge- Including the cities of La Barge, Big Piney, Farson, Rock Springs, and Green River 422 AM MST Sat Nov 30 2019 ...WINTER WEATHER ADVISORY IS CANCELLED... Steady snow has ended and any further snow showers will leave little or no additional accumulation. Patchy blowing snow will continue to restrict visibility at times. $$ WYZ010-011-301930- /O.CON.KRIW.BZ.W.0001.000000T0000Z-191201T0100Z/ Northeast Johnson County-Southeast Johnson County- Including the cities of Buffalo and Kaycee 422 AM MST Sat Nov 30 2019 ...BLIZZARD WARNING REMAINS IN EFFECT UNTIL 6 PM MST THIS EVENING... * WHAT...Freezing drizzle before blizzard conditions develop. Total snow accumulations 4 to 8 inches. Wind gusts 40 to 60 mph. * WHERE...Johnson County. * WHEN...Until 6 PM MST. * IMPACTS...Travel will be very difficult to impossible. Widespread blowing snow will significantly reduce visibility to near zero. * ADDITIONAL DETAILS...Interstates 25 and 90 will be severely impacted by this storm. Wind gusts will be strongest across the Interstate 90 corridor across northern Johnson County during the day Saturday. PRECAUTIONARY/PREPAREDNESS ACTIONS... Travel should be restricted to emergencies only. If you must travel, have a winter survival kit with you. If you get stranded, stay with your vehicle. The latest road conditions for the state you are calling from can be obtained by calling 5 1 1. && $$ WYZ012>016-024-025-301300- /O.CON.KRIW.WS.W.0015.000000T0000Z-191130T1300Z/ Teton and Gros Ventre Mountains-Jackson Hole- Wind River Mountains West-Wind River Mountains East- Upper Wind River Basin-Salt River and Wyoming Ranges- Upper Green River Basin Foothills- Including the cities of Jackson, Dubois, and Pinedale 422 AM MST Sat Nov 30 2019 ...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 6 AM MST EARLY THIS MORNING... * WHAT...Periods of snow, Total snow accumulations of 4 to 8 inches in the lower elevations, and 10 to 20 inches in the mountains. Isolated mountain snow accumulations of two feet possible. * WHERE...Jackson Hole, the Upper Green River Basin Foothills including Pinedale, the Upper Wind River Basin including Dubois, the Teton and Gros Ventre Mountains, Salt and Wyoming Mountains, and the Wind River Mountains. * WHEN...Until 6 AM MST. * IMPACTS...Travel will be very difficult. Blowing snow will significantly reduce visibility to near zero at times over South Pass. PRECAUTIONARY/PREPAREDNESS ACTIONS... If you must travel, keep an extra flashlight, food, and water in your vehicle in case of an emergency. The latest road conditions for the state you are calling from can be obtained by calling 5 1 1. && $$ WYZ003>007-017-018-301600- /O.CON.KRIW.WS.W.0015.000000T0000Z-191130T1600Z/ Cody Foothills-North Big Horn Basin-Southwest Big Horn Basin- Southeast Big Horn Basin-Owl Creek and Bridger Mountains- Wind River Basin-Lander Foothills- Including the cities of Clark, Cody, Meeteetse, Basin, Greybull, Lovell, Powell, Shell, Thermopolis, Ten Sleep, Worland, Riverton, Shoshoni, and Lander 422 AM MST Sat Nov 30 2019 ...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 9 AM MST THIS MORNING... * WHAT...Snow. Total snow accumulations of 4 to 8 inches, with locally higher amounts near Thermopolis and Ten Sleep. Northwest wind 20 to 35 mph. * WHERE...Portions of central and north central Wyoming. * WHEN...Until 9 AM MST. * IMPACTS...Travel could be very difficult. Blowing snow will significantly reduce visibility. The wind will be strongest over the eastern portion of the Bighorn Basin, especially Big Horn County. 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. && $$ WYZ008-009-301930- /O.CON.KRIW.WS.W.0015.000000T0000Z-191201T0100Z/ Bighorn Mountains West-Bighorn Mountains Southeast- 422 AM MST Sat Nov 30 2019 ...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 6 PM MST THIS EVENING... * WHAT...Heavy snow expected. Total snow accumulations of 6 to 10 inches, with up to 14 inches over the southern end of the Bighorn Range. Winds gusting as high as 50 to 60 mph in exposed areas. * WHERE...Bighorn Mountains. * WHEN...Until 6 PM MST. * IMPACTS...Travel could be very difficult to impossible at times over Powder River Pass and Granite Pass where blowing snow will significantly reduce visibility. PRECAUTIONARY/PREPAREDNESS ACTIONS... If you must travel, keep an extra flashlight, food, and water in your vehicle in case of an emergency. The latest road conditions for the state you are calling from can be obtained by calling 5 1 1. && $$ WYZ020-022-301930- /O.CON.KRIW.WS.W.0015.000000T0000Z-191201T0100Z/ Natrona County Lower Elevations-Casper Mountain- Including the city of Casper 422 AM MST Sat Nov 30 2019 ...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 6 PM MST THIS EVENING... * WHAT...Snow, steadiest and heaviest this morning. Total snow accumulations 5 to 10 inches across the lower elevations, and 10 to 15 inches on Casper Mountain. The heaviest snow is expected between Friday evening and sunrise Saturday. Wind becoming northwest 15 to 25 mph early Saturday morning. * WHERE...Natrona County including Casper and Casper Mountain. * WHEN...Until 6 PM MST Saturday. * IMPACTS...Travel will be very difficult. Blowing snow will significantly reduce visibility. * ADDITIONAL DETAILS...Travel on Interstate 25 as well as on Highways 26 and 220 will become extremely difficult. 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. && $$ WYZ023-301300- /O.CON.KRIW.WW.Y.0041.000000T0000Z-191130T1300Z/ Star Valley- Including the cities of Afton, Alpine, Star Valley Ranch, and Thayne 422 AM MST Sat Nov 30 2019 ...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 6 AM MST EARLY THIS MORNING... * WHAT...Snow. A trace to 2 inches of additional accumulation. * WHERE...Star Valley. * WHEN...Until 6 AM MST Saturday. * IMPACTS...Plan on icy and hazardous conditions. PRECAUTIONARY/PREPAREDNESS ACTIONS... Slow down and use caution while traveling. The latest road conditions for the state you are calling from can be obtained by calling 5 1 1. && $$ WYZ027-301300- /O.CON.KRIW.WW.Y.0041.000000T0000Z-191130T1300Z/ South Lincoln County- Including the cities of Kemmerer and Cokeville 422 AM MST Sat Nov 30 2019 ...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 6 AM MST EARLY THIS MORNING... * WHAT...Snow. Additional snow accumulations of a trace to 2 inches. * WHERE...Upper Green River Basin and South Lincoln County. * WHEN...Until 6 AM MST Saturday. * IMPACTS...Plan on icy and hazardous conditions. 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. && $$ WYZ001-002-301300- /O.CON.KRIW.WW.Y.0041.000000T0000Z-191130T1300Z/ Yellowstone National Park-Absaroka Mountains- Including the cities of Lake, Mammoth, and Old Faithful 422 AM MST Sat Nov 30 2019 ...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 6 AM MST EARLY THIS MORNING... * WHAT...Snow. Additional snow accumulations of 1 to 2 inches. * WHERE...Yellowstone National Park and Absaroka Mountains. * WHEN...Until 6 AM MST Saturday. * IMPACTS...Travel will be very difficult. Blowing snow will significantly reduce visibility. * ADDITIONAL DETAILS...Travel along the Chief Joseph Highway in the eastern Absaroka Mountains could become especially hazardous due to blowing and drifting snow. PRECAUTIONARY/PREPAREDNESS ACTIONS... Slow down and use caution while traveling. The latest road conditions for the state you are calling from can be obtained by calling 5 1 1. && $$ WYZ019-030-301600- /O.CON.KRIW.WW.Y.0041.000000T0000Z-191130T1600Z/ Green Mountains and Rattlesnake Range-East Sweetwater County- Including the cities of Jeffrey City and Wamsutter 422 AM MST Sat Nov 30 2019 ...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 9 AM MST THIS MORNING... * WHAT...Snow. Additional snow accumulations of 1 to 3 inches. Northwest wind increasing to 15 to 30 mph. * WHERE...East Sweetwater County and Areas Around Jeffrey City. * WHEN...Until 9 AM MST Saturday. * IMPACTS...Plan on slippery road conditions. Patchy blowing snow could significantly reduce visibility. The hazardous conditions could impact the evening commute. Gusty winds could bring down tree branches. * ADDITIONAL DETAILS...Travel along Interstate 80 will become especially hazardous due to considerable blowing and drifting snow, reducing the visibility to near zero at times. 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. && $$ For more information from the National Weather Service visit http://weather.gov/riw
671 WWUS45 KRIW 301237 WSWRIW URGENT - WINTER WEATHER MESSAGE National Weather Service Riverton WY 537 AM MST Sat Nov 30 2019 ...Widespread Snow and Increasing Wind to Impact Western and Central Wyoming today... .A winter storm will effect Wyoming through today. Snow will taper off across the west this morning and then end from west to east through the day. Strong winds will continue in northern Wyoming with blizzard conditions remaining likely across Johnson County. WYZ012>016-024-025-301345- /O.EXP.KRIW.WS.W.0015.000000T0000Z-191130T1300Z/ Teton and Gros Ventre Mountains-Jackson Hole- Wind River Mountains West-Wind River Mountains East- Upper Wind River Basin-Salt River and Wyoming Ranges- Upper Green River Basin Foothills- Including the cities of Jackson, Dubois, and Pinedale 537 AM MST Sat Nov 30 2019 ...WINTER STORM WARNING WILL EXPIRE AT 6 AM MST EARLY THIS MORNING... The winter storm warning will be allowed to expire. Additional snow showers may bring additional local accumulations of an inch or two, especially in the mountains. Roads will remain slick and snow packed through the morning. $$ WYZ023-301345- /O.EXP.KRIW.WW.Y.0041.000000T0000Z-191130T1300Z/ Star Valley- Including the cities of Afton, Alpine, Star Valley Ranch, and Thayne 537 AM MST Sat Nov 30 2019 ...WINTER WEATHER ADVISORY WILL EXPIRE AT 6 AM MST EARLY THIS MORNING... The winter storm warning will be allowed to expire. Additional snow showers may bring additional local accumulations of an inch or two, especially in the mountains. Roads will remain slick and snow packed through the morning. $$ WYZ027-301345- /O.EXP.KRIW.WW.Y.0041.000000T0000Z-191130T1300Z/ South Lincoln County- Including the cities of Kemmerer and Cokeville 537 AM MST Sat Nov 30 2019 ...WINTER WEATHER ADVISORY WILL EXPIRE AT 6 AM MST EARLY THIS MORNING... The winter storm warning will be allowed to expire. Additional snow showers may bring additional local accumulations of around an inch in spots. Roads will remain slick and snow packed through the morning. $$ WYZ001-002-301345- /O.EXP.KRIW.WW.Y.0041.000000T0000Z-191130T1300Z/ Yellowstone National Park-Absaroka Mountains- Including the cities of Lake, Mammoth, and Old Faithful 537 AM MST Sat Nov 30 2019 ...WINTER WEATHER ADVISORY WILL EXPIRE AT 6 AM MST EARLY THIS MORNING... The winter storm warning will be allowed to expire. Additional snow showers may bring additional local accumulations of an inch or two, especially in the mountains. Roads will remain slick and snow packed through the morning. $$ WYZ010-011-302045- /O.CON.KRIW.BZ.W.0001.000000T0000Z-191201T0100Z/ Northeast Johnson County-Southeast Johnson County- Including the cities of Buffalo and Kaycee 537 AM MST Sat Nov 30 2019 ...BLIZZARD WARNING REMAINS IN EFFECT UNTIL 6 PM MST THIS EVENING... * WHAT...Snow. Total snow accumulations 4 to 8 inches. Wind gusts 40 to 60 mph. * WHERE...Johnson County. * WHEN...Until 6 PM MST. * IMPACTS...Travel will be very difficult to impossible. Widespread blowing snow will significantly reduce visibility to near zero. * ADDITIONAL DETAILS...Interstates 25 and 90 will be severely impacted by this storm. Wind gusts will be strongest across the Interstate 90 corridor across northern Johnson County during the day Saturday. PRECAUTIONARY/PREPAREDNESS ACTIONS... Travel should be restricted to emergencies only. If you must travel, have a winter survival kit with you. If you get stranded, stay with your vehicle. The latest road conditions for the state you are calling from can be obtained by calling 5 1 1. && $$ WYZ003>007-017-018-301600- /O.CON.KRIW.WS.W.0015.000000T0000Z-191130T1600Z/ Cody Foothills-North Big Horn Basin-Southwest Big Horn Basin- Southeast Big Horn Basin-Owl Creek and Bridger Mountains- Wind River Basin-Lander Foothills- Including the cities of Clark, Cody, Meeteetse, Basin, Greybull, Lovell, Powell, Shell, Thermopolis, Ten Sleep, Worland, Riverton, Shoshoni, and Lander 537 AM MST Sat Nov 30 2019 ...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 9 AM MST THIS MORNING... * WHAT...Snow. Total snow accumulations of 4 to 8 inches, with locally higher amounts near Thermopolis and Ten Sleep. Northwest wind 20 to 35 mph. * WHERE...Portions of central and north central Wyoming. * WHEN...Until 9 AM MST. * IMPACTS...Travel could be very difficult. Blowing snow will significantly reduce visibility. The wind will be strongest over the eastern portion of the Bighorn Basin, especially Big Horn County. 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. && $$ WYZ008-009-302045- /O.CON.KRIW.WS.W.0015.000000T0000Z-191201T0100Z/ Bighorn Mountains West-Bighorn Mountains Southeast- 537 AM MST Sat Nov 30 2019 ...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 6 PM MST THIS EVENING... * WHAT...Heavy snow expected. Total snow accumulations of 6 to 10 inches, with up to 14 inches over the southern end of the Bighorn Range. Winds gusting as high as 50 to 60 mph in exposed areas. * WHERE...Bighorn Mountains. * WHEN...Until 6 PM MST. * IMPACTS...Travel could be very difficult to impossible at times over Powder River Pass and Granite Pass where blowing snow will significantly reduce visibility. PRECAUTIONARY/PREPAREDNESS ACTIONS... If you must travel, keep an extra flashlight, food, and water in your vehicle in case of an emergency. The latest road conditions for the state you are calling from can be obtained by calling 5 1 1. && $$ WYZ020-022-302045- /O.CON.KRIW.WS.W.0015.000000T0000Z-191201T0100Z/ Natrona County Lower Elevations-Casper Mountain- Including the city of Casper 537 AM MST Sat Nov 30 2019 ...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 6 PM MST THIS EVENING... * WHAT...Snow, steadiest and heaviest this morning. Total snow accumulations 5 to 10 inches across the lower elevations, and 10 to 15 inches on Casper Mountain. The heaviest snow is expected between Friday evening and sunrise Saturday. Wind becoming northwest 15 to 25 mph early Saturday morning. * WHERE...Natrona County including Casper and Casper Mountain. * WHEN...Until 6 PM MST Saturday. * IMPACTS...Travel will be very difficult. Blowing snow will significantly reduce visibility. * ADDITIONAL DETAILS...Travel on Interstate 25 as well as on Highways 26 and 220 will become extremely difficult. 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. && $$ WYZ019-030-301600- /O.CON.KRIW.WW.Y.0041.000000T0000Z-191130T1600Z/ Green Mountains and Rattlesnake Range-East Sweetwater County- Including the cities of Jeffrey City and Wamsutter 537 AM MST Sat Nov 30 2019 ...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 9 AM MST THIS MORNING... * WHAT...Snow. Additional accumulations of 1 to 3 inches. Northwest wind increasing to 15 to 30 mph. * WHERE...East Sweetwater County and Areas Around Jeffrey City. * WHEN...Until 9 AM MST Saturday. * IMPACTS...Plan on slippery road conditions. Patchy blowing snow could significantly reduce visibility. The hazardous conditions could impact the evening commute. Gusty winds could bring down tree branches. * ADDITIONAL DETAILS...Travel along Interstate 80 will become especially hazardous due to considerable blowing and drifting snow, reducing the visibility to near zero at times. PRECAUTIONARY/PREPAREDNESS ACTIONS... Slow down and use caution while traveling. The latest road conditions for the state you are calling from can be obtained by calling 5 1 1. && $$ For more information from the National Weather Service visit http://weather.gov/riw
648 WWUS45 KRIW 301600 WSWRIW URGENT - WINTER WEATHER MESSAGE National Weather Service Riverton WY 900 AM MST Sat Nov 30 2019 ...Widespread Snow and Increasing Wind to Impact Western and Central Wyoming today... .A winter storm will effect Wyoming through today. Snow will taper off across the west this morning and then end from west to east through the day. Strong winds will continue in northern Wyoming with blizzard conditions remaining likely across portions of Johnson County. WYZ003-004-301700- /O.EXP.KRIW.WS.W.0015.000000T0000Z-191130T1600Z/ Cody Foothills-North Big Horn Basin- Including the cities of Clark, Cody, Meeteetse, Basin, Greybull, Lovell, Powell, and Shell 900 AM MST Sat Nov 30 2019 ...WINTER STORM WARNING WILL EXPIRE AT 9 AM MST THIS MORNING... The storm that delivered the snow to the area yesterday through this morning has exited northeast of the area to the Northern Plains. As a result, the snowfall has diminished over the area, and the winter storm warning for the area has been allowed to expire. $$ WYZ005>007-017-018-301900- /O.EXT.KRIW.WS.W.0015.000000T0000Z-191130T1900Z/ Southwest Big Horn Basin-Southeast Big Horn Basin- Owl Creek and Bridger Mountains-Wind River Basin-Lander Foothills- Including the cities of Thermopolis, Ten Sleep, Worland, Riverton, Shoshoni, and Lander 900 AM MST Sat Nov 30 2019 ...WINTER STORM WARNING NOW IN EFFECT UNTIL NOON MST TODAY... * WHAT...Heavy snow. Additional snow accumulations of up to one inch. Winds gusting as high as 35 mph. * WHERE...Owl Creek and Bridger Mountains, Southwest Big Horn Basin, Southeast Big Horn Basin, Wind River Basin and Lander Foothills. * WHEN...Until noon MST today. * IMPACTS...Plan on slippery road conditions. Patchy blowing snow could significantly reduce visibility. PRECAUTIONARY/PREPAREDNESS ACTIONS... If you must travel, keep an extra flashlight, food, and water in your vehicle in case of an emergency. The latest road conditions for the state you are calling from can be obtained by calling 5 1 1. && $$ WYZ010-011-301900- /O.CON.KRIW.BZ.W.0001.000000T0000Z-191201T0100Z/ Northeast Johnson County-Southeast Johnson County- Including the cities of Buffalo and Kaycee 900 AM MST Sat Nov 30 2019 ...BLIZZARD WARNING REMAINS IN EFFECT UNTIL 6 PM MST THIS EVENING... * WHAT...Occasional blizzard conditions in some areas. Additional snow accumulations of up to two inches. Winds gusting as high as 50 mph. * WHERE...Northeast Johnson County and Southeast Johnson County. * WHEN...Until 6 PM MST this evening. * IMPACTS...Plan on slippery road conditions. Widespread blowing snow could significantly reduce visibility. Gusty winds could bring down tree branches. * ADDITIONAL DETAILS...Interstates 25 and 90 will be severely impacted by this storm. Wind gusts will be strongest across the Interstate 90 corridor across northern Johnson County during the day today. PRECAUTIONARY/PREPAREDNESS ACTIONS... Travel should be restricted to emergencies only. If you must travel, have a winter survival kit with you. If you get stranded, stay with your vehicle. The latest road conditions for the state you are calling from can be obtained by calling 5 1 1. && $$ WYZ008-009-301900- /O.CON.KRIW.WS.W.0015.000000T0000Z-191201T0100Z/ Bighorn Mountains West-Bighorn Mountains Southeast- 900 AM MST Sat Nov 30 2019 ...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 6 PM MST THIS EVENING... * WHAT...Heavy snow. Additional snow accumulations of up to two inches. Winds gusting as high as 55 mph. * WHERE...Bighorn Mountains West and Bighorn Mountains Southeast. * WHEN...Until 6 PM MST this evening. * IMPACTS...Plan on slippery road conditions. Patchy blowing snow could significantly reduce visibility. Strong winds could cause tree damage. The cold wind chills as low as 20 below zero could cause frostbite on exposed skin in as little as 30 minutes. PRECAUTIONARY/PREPAREDNESS ACTIONS... If you must travel, keep an extra flashlight, food, and water in your vehicle in case of an emergency. The latest road conditions for the state you are calling from can be obtained by calling 5 1 1. && $$ WYZ020-022-301900- /O.CON.KRIW.WS.W.0015.000000T0000Z-191201T0100Z/ Natrona County Lower Elevations-Casper Mountain- Including the city of Casper 900 AM MST Sat Nov 30 2019 ...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 6 PM MST THIS EVENING... * WHAT...Heavy snow. Additional snow accumulations of 1 to 3 inches. Winds gusting as high as 40 mph. * WHERE...Casper Mountain and Natrona County Lower Elevations. * WHEN...Until 6 PM MST this evening. * IMPACTS...Plan on slippery road conditions. Patchy blowing snow could significantly reduce visibility. * ADDITIONAL DETAILS...Travel on Interstate 25 as well as on Highways 26 and 220 will be extremely difficult. 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. && $$ WYZ019-030-301900- /O.EXT.KRIW.WW.Y.0041.000000T0000Z-191130T1900Z/ Green Mountains and Rattlesnake Range-East Sweetwater County- Including the cities of Jeffrey City and Wamsutter 900 AM MST Sat Nov 30 2019 ...WINTER WEATHER ADVISORY NOW IN EFFECT UNTIL NOON MST TODAY... * WHAT...Snow. Additional snow accumulations of up to one inch. Winds gusting as high as 45 mph. * WHERE...East Sweetwater County and Green Mountains and Rattlesnake Range. * WHEN...Until noon MST today. * IMPACTS...Plan on slippery road conditions. Patchy blowing snow could significantly reduce visibility. PRECAUTIONARY/PREPAREDNESS ACTIONS... Slow down and use caution while traveling. The latest road conditions for the state you are calling from can be obtained by calling 5 1 1. && $$ For more information from the National Weather Service visit http://weather.gov/riw
758 WWUS45 KRIW 301906 WSWRIW URGENT - WINTER WEATHER MESSAGE National Weather Service Riverton WY 1206 PM MST Sat Nov 30 2019 ...Widespread Snow and Wind to continue Impact East Central Wyoming this afternoon... .A winter storm will effect east central Wyoming through this afternoon. Snow will taper off from west to east through this afternoon. Strong winds will continue in northern Wyoming with occasional blizzard conditions remaining likely across portions of Johnson County. WYZ005>007-017-018-302015- /O.EXP.KRIW.WS.W.0015.000000T0000Z-191130T1900Z/ Southwest Big Horn Basin-Southeast Big Horn Basin- Owl Creek and Bridger Mountains-Wind River Basin-Lander Foothills- Including the cities of Thermopolis, Ten Sleep, Worland, Riverton, Shoshoni, and Lander 1206 PM MST Sat Nov 30 2019 ...WINTER STORM WARNING HAS EXPIRED... The storm that delivered the snow to the area yesterday through this morning has exited northeast of the area to the Northern Plains. As a result, the snowfall has diminished over the area, and the winter storm warning for the area has been allowed to expire. $$ WYZ019-030-302015- /O.EXP.KRIW.WW.Y.0041.000000T0000Z-191130T1900Z/ Green Mountains and Rattlesnake Range-East Sweetwater County- Including the cities of Jeffrey City and Wamsutter 1206 PM MST Sat Nov 30 2019 ...WINTER WEATHER ADVISORY HAS EXPIRED... The storm that delivered the snow to the area yesterday through this morning has exited northeast of the area to the Northern Plains. As a result, the snowfall has diminished over the area, and the winter storm warning for the area has been allowed to expire. $$ WYZ010-011-010100- /O.CON.KRIW.BZ.W.0001.000000T0000Z-191201T0100Z/ Northeast Johnson County-Southeast Johnson County- Including the cities of Buffalo and Kaycee 1206 PM MST Sat Nov 30 2019 ...BLIZZARD WARNING REMAINS IN EFFECT UNTIL 6 PM MST THIS EVENING... * WHAT...Blizzard conditions. Additional snow accumulations of up to one inch. Winds gusting as high as 50 mph. * WHERE...Southeast Johnson County and Northeast Johnson County. * WHEN...Until 6 PM MST this evening. * IMPACTS...Plan on slippery road conditions. Areas of blowing snow could significantly reduce visibility. Gusty winds could bring down tree branches. * ADDITIONAL DETAILS...Interstates 25 and 90 will be severely impacted by this storm. Wind gusts will be strongest across the Interstate 90 corridor across northern Johnson County this afternoon. PRECAUTIONARY/PREPAREDNESS ACTIONS... Travel should be restricted to emergencies only. If you must travel, have a winter survival kit with you. If you get stranded, stay with your vehicle. The latest road conditions for the state you are calling from can be obtained by calling 5 1 1. && $$ WYZ008-009-010100- /O.CON.KRIW.WS.W.0015.000000T0000Z-191201T0100Z/ Bighorn Mountains West-Bighorn Mountains Southeast- 1206 PM MST Sat Nov 30 2019 ...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 6 PM MST THIS EVENING... * WHAT...Heavy snow. Additional snow accumulations of up to one inch. Winds gusting as high as 55 mph. * WHERE...Bighorn Mountains West and Bighorn Mountains Southeast. * WHEN...Until 6 PM MST this evening. * IMPACTS...Plan on slippery road conditions. Patchy blowing snow could significantly reduce visibility. Strong winds could cause tree damage. The cold wind chills as low as 20 below zero could cause frostbite on exposed skin in as little as 30 minutes. PRECAUTIONARY/PREPAREDNESS ACTIONS... If you must travel, keep an extra flashlight, food, and water in your vehicle in case of an emergency. The latest road conditions for the state you are calling from can be obtained by calling 5 1 1. && $$ WYZ020-022-010100- /O.CON.KRIW.WS.W.0015.000000T0000Z-191201T0100Z/ Natrona County Lower Elevations-Casper Mountain- Including the city of Casper 1206 PM MST Sat Nov 30 2019 ...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 6 PM MST THIS EVENING... * WHAT...Heavy snow. Additional snow accumulations of up to two inches. Winds gusting as high as 40 mph. * WHERE...Casper Mountain and Natrona County Lower Elevations. * WHEN...Until 6 PM MST this evening. * IMPACTS...Plan on slippery road conditions. Patchy 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. && $$ For more information from the National Weather Service visit http://weather.gov/riw
517 WWUS45 KRIW 302137 WSWRIW URGENT - WINTER WEATHER MESSAGE National Weather Service Riverton WY 237 PM MST Sat Nov 30 2019 ...Widespread Snow and Wind to continue Impact East Central Wyoming this afternoon... .A winter storm will effect east central Wyoming through the rest of this afternoon. Snow will taper off from west to east through the afternoon. Strong winds will continue in northern Wyoming with occasional blizzard conditions remaining likely across portions of Johnson County. WYZ008-009-302245- /O.CAN.KRIW.WS.W.0015.000000T0000Z-191201T0100Z/ Bighorn Mountains West-Bighorn Mountains Southeast- 237 PM MST Sat Nov 30 2019 ...WINTER STORM WARNING IS CANCELLED... The storm that delivered the snow to the area yesterday through this morning has exited northeast of the area to the Northern Plains. As a result, the snowfall has diminished over the area, and the winter storm warning for the area has been allowed to expire. $$ WYZ010-011-010100- /O.CON.KRIW.BZ.W.0001.000000T0000Z-191201T0100Z/ Northeast Johnson County-Southeast Johnson County- Including the cities of Buffalo and Kaycee 237 PM MST Sat Nov 30 2019 ...BLIZZARD WARNING REMAINS IN EFFECT UNTIL 6 PM MST THIS EVENING... * WHAT...Blizzard conditions. Additional snow accumulations of less than an inch, however, drifting of snow will continue. Winds gusting as high as 55 mph. * WHERE...Southeast Johnson County and Northeast Johnson County. * WHEN...Until 6 PM MST this evening. * IMPACTS...Plan on slippery road conditions. Patchy blowing snow could significantly reduce visibility. Strong winds could cause tree damage. * ADDITIONAL DETAILS...Interstates 25 and 90 will be severely impacted by this storm. Wind gusts will be strongest across the Interstate 90 corridor across northern Johnson County this afternoon. PRECAUTIONARY/PREPAREDNESS ACTIONS... Travel should be restricted to emergencies only. If you must travel, have a winter survival kit with you. If you get stranded, stay with your vehicle. The latest road conditions for the state you are calling from can be obtained by calling 5 1 1. && $$ WYZ020-022-010100- /O.CON.KRIW.WS.W.0015.000000T0000Z-191201T0100Z/ Natrona County Lower Elevations-Casper Mountain- Including the city of Casper 237 PM MST Sat Nov 30 2019 ...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 6 PM MST THIS EVENING... * WHAT...Heavy snow. Additional snow accumulations of up to one inch. Winds gusting as high as 40 mph. * WHERE...Casper Mountain and Natrona County Lower Elevations. * WHEN...Until 6 PM MST this evening. * IMPACTS...Plan on slippery road conditions. Blowing snow could significantly reduce visibility. PRECAUTIONARY/PREPAREDNESS ACTIONS... If you must travel, keep an extra flashlight, food, and water in your vehicle in case of an emergency. The latest road conditions for the state you are calling from can be obtained by calling 5 1 1. && $$ For more information from the National Weather Service visit http://weather.gov/riw
What forecasters said that day
The local office's own words before this blizzard warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.
NWS Riverton, WY wrote its last area forecast discussion before this blizzard warning went out at Nov 28, 10:48 AM MST, 5 hours 51 minutes earlier.
Area forecast discussion, Nov 28, 10:48 AM MST, 5 hours 51 minutes before
Area Forecast Discussion National Weather Service Riverton WY 1048 AM MST Thu Nov 28 2019 .SHORT TERM...Today through Saturday ...Snow to increase during the Thanksgiving Holiday Weekend... Light snow continues to stream northward along the ID/WY border this morning. The flow aloft is turning more S-N vs SW-NE, as the upper low over CA continues to dig. Snowfall amounts today will be slightly higher than forecasted yesterday, with 2 to 3 inches expected in the lower elevations, from southern Lincoln County to Hoback Junction and the Jackson and Star Valleys. Snowfall amounts in the mountains and portions of Yellowstone will range between 3 and 6 inches. Will reissue the Special Weather Statement for these far western zones. Otherwise, temperatures will remain cold for much of the area today. Gusty S winds will raise temperatures into the upper 30s to near 40 degrees over portions of Sweetwater County to the Continental Divide. Conditions will begin to deteriorate over SW portions this evening, as the first of a series of shortwaves/fronts begin to move over the area. An area of light to moderate snow will move over W Sweetwater and S Lincoln counties this evening, moving N into Sublette County. As this snow moves into Sublette County and the Upper Green River Basin, this will mark the beginning of the storm system to impact this area. Another shortwave associated with an occluded front will then make its way over SW WY by 12Z Friday, bringing snow across far W portions through the rest of the morning as it moves N. By 12Z Friday, a surface low will form along the cold front over far SW WY. The occluded low will be over NE NV. This will keep the focus of the snowfall over areas W of the Divide through the morning Friday. By 18Z, the cold front will continue to progress E into CO. A new surface low will begin to develop, with leeside cyclogenesis forming this low along the CO Front Range by 00Z Saturday. Snow will spread on the E side of the Divide after sunrise Friday morning, becoming widespread over the central basins by the afternoon. A new occluded front will be in place over S-central WY by 00Z Saturday. This will be the main lifting mechanism for the snow E of the Divide Friday night into Saturday. Gusty W to NW winds will then occur during this time behind the cold front. W winds with gusts up to 25 mph will occur over Sweetwater and S Lincoln counties by sunset Friday evening. This will create difficult travel conditions across Interstate 80. Thankfully, snowfall amounts are expected to be very light with 2 to 3 inches. NW winds 20 to 25 with gusts up to 35 mph will occur over N portions of Johnson County and the Bighorn Basin Friday night as well. Near- blizzard conditions will occur over these areas during this time. N Johnson County will be the most likely to have blizzard conditions, as this area is prone to NW winds. The pressure gradient will be tight over E WY by 12Z Saturday, as the surface low deepens to at least 988mb. These conditions could extend to Natrona County, if current model trends have this low deepening even further. The storm track will also play a role in this as well. Overall, 3 to 6 inches of snow is expected across much of the area with locally higher amounts up to 8 inches east of the Divide. 6 to 12 inches will fall in the mountains, with the W mountains getting 7 to 14 inches. .LONG TERM...Saturday night through Wednesday A weak ridge will build over the area in the wake of the winter storm Saturday night. This will keep most of the forecast area dry through Monday. Late Sunday night, a minor wave will bring in some moisture to far western Wyoming. Light snow will fall across the west through Monday, with chances lasting into Tuesday as well. This will include the Tetons and Jackson Valley, but not expecting significant impacts with this system. Beginning Monday, the afternoon temperatures will show a slight warm up, with some locations reaching highs near 40. There will be gusty winds throughout the period, mainly from South Pass to Natrona County and across the eastern Absarokas. && .AVIATION...(For the 18Z TAFS through 18Z Friday afternoon) Issued at 1047 AM MST Thu Nov 28 2019 West of the Continental Divide...KRKS, KJAC, KBPI, KPNA Terminal sites. Light to moderate snow falling at KJAC will decrease early this afternoon. Chance for snow at KPNA and KBPI throughout the afternoon and evening. MVFR/IFR conditions will be possible through Thursday evening with these periods of snow. Mountain obscuration is likely through the entire period. Wind shear conditions are possible at most terminals through late morning Thursday. East of the Continental Divide...KCPR, KLND, KRIW, KCOD, KWRL Terminal sites. Otherwise, mainly VFR conditions for sites until late in the period. KLND has a slight chance for some snow coming off of the Wind River Mountains, but accumulations will be low at the terminal. Clouds will lower through the evening and overnight with snow and isolated MVFR ceilings possible everywhere, except KCPR, with conditions expected to deteriorate after 12z Friday. && .FIRE WEATHER... Light snow will continue across the far west today. Temperatures will remain cold across much of the area, except over zones 279 and 289, where temperatures will rise into the upper 30s to near 40 degrees. This will be due to breezy southerly winds, mixing the cold air out of the area. A major storm system will impact the area Friday and Saturday, with areas of moderate to heavy snow possible. Strong winds will also occur Friday night into Saturday for areas east of the Divide, especially across zone 281. && .RIW WATCHES/WARNINGS/ADVISORIES... Winter Storm Watch from Friday morning through Saturday morning for WYZ003>007-017>019. Winter Storm Watch from late tonight through late Friday night for WYZ012>016-023>027. Winter Storm Watch from Friday afternoon through Saturday afternoon for WYZ008>011-020-022. && SHORT TERM...LaVoie LONG TERM...Swanson AVIATION...Myers FIRE WEATHER...LaVoie
Hazardous weather outlook, Nov 28, 3:59 AM MST, 12 hours 40 minutes before
Hazardous Weather Outlook National Weather Service Riverton WY 359 AM MST Thu Nov 28 2019 WYZ001>020-022>030-291100- Yellowstone National Park-Absaroka Mountains-Cody Foothills- North Big Horn Basin-Southwest Big Horn Basin- Southeast Big Horn Basin-Owl Creek and Bridger Mountains- Bighorn Mountains West-Bighorn Mountains Southeast- Northeast Johnson County-Southeast Johnson County- Teton and Gros Ventre Mountains-Jackson Hole- Wind River Mountains West-Wind River Mountains East- Upper Wind River Basin-Wind River Basin-Lander Foothills- Green Mountains and Rattlesnake Range- Natrona County Lower Elevations-Casper Mountain-Star Valley- Salt River and Wyoming Ranges-Upper Green River Basin Foothills- Upper Green River Basin-South Lincoln County- Rock Springs and Green River-Flaming Gorge-East Sweetwater County- 359 AM MST Thu Nov 28 2019 This Hazardous Weather Outlook is for Western and Central Wyoming. .DAY ONE...Today and tonight. Light snow will continue through the day for the far west and the west slopes of the Wind River Mountains. A fast moving band of snow affects western Sweetwater & southern Lincoln counties this evening. Light snow continues over far western portions, including the Upper Wind River Basin, tonight. Snow amounts are generally expected to be on the lighter side. .DAYS TWO THROUGH SEVEN...Friday through Wednesday. Friday and Saturday...Snowfall intensity increases in the west Friday morning, as a low intensifies and pushes northward. Snow spreads west to east during the day on Friday, becoming widespread across the state. Gusty winds developing during the afternoon, continue into Friday night, over areas east of the Divide and Sweetwater County. Snow ends west to east Friday night and Saturday morning. Blizzard conditions possible across Johnson County Saturday. Monday and Tuesday...Another round of snow is possible for the west. .SPOTTER INFORMATION STATEMENT... Weather spotters are encouraged to report significant weather conditions according to standard operating procedures. Team Riverton
In the hours before
Local storm report, Nov 28, 4:18 PM MST, 21 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE RIVERTON WY
418 PM MST THU NOV 28 2019
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0900 AM SNOW 1 N JACKSON 43.49N 110.76W
11/28/2019 M2.9 INCH TETON WY CO-OP OBSERVER
CO-OP OBSERVER STATION JFSW4 JACKSON.
0818 AM SNOW 1 N LAKE 44.56N 110.40W
11/28/2019 M2.0 INCH TETON WY CO-OP OBSERVER
CO-OP OBSERVER STATION LKYW4 LAKE
YELLOWSTONE.
0800 AM SNOW 3 SSW WILSON 43.47N 110.90W
11/28/2019 M8.0 INCH TETON WY COCORAHS
COCORAHS STATION WY-TT-22 WILSON 3 SSW.
0700 AM SNOW 2 NNE TETON VILLAGE 43.60N 110.80W
11/28/2019 M5.5 INCH TETON WY COCORAHS
COCORAHS STATION WY-TT-15 TETON VILLAGE 2
NE.
0800 AM SNOW 5 NW DANIEL 42.93N 110.13W
11/28/2019 M3.0 INCH SUBLETTE WY CO-OP OBSERVER
CO-OP OBSERVER STATION DANW4 DANIEL.
0700 AM SNOW 6 WNW CORA 42.98N 110.09W
11/28/2019 M5.5 INCH SUBLETTE WY COCORAHS
COCORAHS STATION WY-SL-7 PINEDALE 14 NW.
0600 PM SNOW 1 NNE PINEDALE 42.87N 109.86W
11/27/2019 M1.0 INCH SUBLETTE WY CO-OP OBSERVER
CO-OP OBSERVER STATION PNDW4 PINEDALE 0.6NE.
0800 AM SNOW TOWER JUNCTION 44.92N 110.42W
11/28/2019 M10.0 INCH PARK WY CO-OP OBSERVER
CO-OP OBSERVER STATION TWRW4 TOWER FALLS.
0800 AM SNOW 9 E TOWER JUNCTION 44.90N 110.23W
11/28/2019 M4.0 INCH PARK WY CO-OP OBSERVER
CO-OP OBSERVER STATION LMRW4 LAMAR RANGER
STATION - YNP.
0800 AM SNOW EAST ENTRANCE 44.49N 110.00W
11/28/2019 M2.0 INCH PARK WY CO-OP OBSERVER
CO-OP OBSERVER STATION EYPW4 EAST ENTRANCE -
YNP.
0900 AM SNOW 5 NNE THAYNE 42.98N 110.95W
11/28/2019 M5.0 INCH LINCOLN WY COCORAHS
COCORAHS STATION WY-LN-17 THAYNE 5NNE.
0800 AM SNOW 1 NE AFTON 42.73N 110.92W
11/28/2019 M3.7 INCH LINCOLN WY CO-OP OBSERVER
CO-OP OBSERVER STATION AFOW4 AFTON.
0700 AM SNOW 5 SSE SMOOT 42.55N 110.89W
11/28/2019 M2.0 INCH LINCOLN WY COCORAHS
COCORAHS STATION WY-LN-2 SMOOT 5 SSE.
0700 AM SNOW 1 SSE THAYNE 42.90N 110.98W
11/28/2019 M3.5 INCH LINCOLN WY COCORAHS
COCORAHS STATION WY-LN-18 THAYNE 2SE.
0700 AM SNOW 7 WNW LANDER 42.86N 108.87W
11/28/2019 M0.1 INCH FREMONT WY COCORAHS
COCORAHS STATION WY-FM-37 LANDER 7WNW.
0600 AM SNOW 1 WNW DUBOIS 43.54N 109.66W
11/28/2019 M1.0 INCH FREMONT WY CO-OP OBSERVER
CO-OP OBSERVER STATION DBOW4 DUBOIS.
&&The office that day
Everything else NWS Riverton, WY issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Nov 28, 4:39 PM MST | Winter Storm Warning | RIW | Big Horn, Fremont, Hot Springs, Johnson, Lincoln, Natrona and 4 more | 49 hr |
| Nov 28, 4:39 PM MST | Winter Weather Advisory | RIW | Fremont, Hot Springs, Lincoln, Natrona, Park, Sublette and 2 more | 43 hr |
Nearby
Blizzard Warnings in Wyoming, 2019Every blizzard warning in 2019
Sources
The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.