Alert archive / Wyoming / Winter Storm Warnings in 2017
Winter Storm Warning 21, NWS Riverton, WY
NWS Riverton, WY issued this winter storm warning at Nov 15, 2017, 1:13 PM MST for 4 counties in Wyoming. It took effect at Nov 16, 2017, 12:00 AM MST. It was in force for 41 hr. 17 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 15, 2017, 1:13 PM MST (20:13 UTC)
- In effect from
- Nov 16, 2017, 12:00 AM MST
- Expired
- Nov 17, 2017, 5:00 PM MST
- In force
- 41 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 20:10 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 16, 4:00 PM MST | SNOW 4.3 | 32 Nne Driggs, WY | GRASSY LAKE SNOTEL 7265 MSL. 22-HOUR TOTAL. |
| Nov 16, 4:00 PM MST | HEAVY SNOW 8 | 10 Ene Driggs, WY | GRAND TARGHEE SNOTEL 9260 MSL. 22-HOUR TOTAL. |
| Nov 16, 4:00 PM MST | HEAVY SNOW 9 | 17 Se Driggs, WY | PHILIPS BENCH SNOTEL 8200 MSL. 22-HOUR TOTAL. |
| Nov 17, 9:47 AM MST | HEAVY SNOW 9 | 11 N Dubois, WY | BURROUGHS CREEK SNOTEL |
| Nov 17, 10:31 AM MST | SNOW 5 | 22 N Cora, WY | KENDALL RANGER STATION SNOTEL |
| Nov 17, 10:33 AM MST | HEAVY SNOW 15 | 18 W Lander, WY | HOBBS PARK SNOTEL |
| Nov 17, 10:34 AM MST | HEAVY SNOW 13 | 7 Nw Atlantic City, WY | SOUTH PASS SNOTEL |
| Nov 17, 10:36 AM MST | SNOW 4 | 12 Sw Lander, WY | TOWNSEND CREEK SNOTEL |
| Nov 17, 10:37 AM MST | SNOW 4 | 8 Se Afton, WY | COTTONWOOD CREEK SNOTEL |
| Nov 17, 10:37 AM MST | HEAVY SNOW 7 | 26 N Kemmerer, WY | HAMS FORK SNOTEL |
| Nov 17, 10:37 AM MST | HEAVY SNOW 13 | 36 N Kemmerer, WY | INDIAN CREEK SNOTEL |
| Nov 17, 10:39 AM MST | HEAVY SNOW 6 | 21 W Big Piney, WY | SNIDER BASIN SNOTEL |
| Nov 17, 10:39 AM MST | HEAVY SNOW 13 | 17 E Afton, WY | TRIPLE PEAK SNOTEL |
| Nov 17, 10:39 AM MST | HEAVY SNOW 15 | 19 Se Afton, WY | SPRING CREEK DIVIDE SNOTEL |
| Nov 17, 10:40 AM MST | HEAVY SNOW 7 | 12 Ese Bondurant, WY | EAST RIM DIVIDE SNOTEL |
| Nov 17, 10:40 AM MST | HEAVY SNOW 10 | 8 Ne Afton, WY | WILLOW CREEK SNOTEL |
| Nov 17, 11:17 AM MST | SNOW 4 | 1 S Jackson, WY | SNOW KING SKI AREA |
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, 8.2 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
- 1884 m above ground
- 0-6 km bulk shear
- 54 kt
- 0-1 km storm-relative helicity
- 90 m²/s²
- 0-3 km storm-relative helicity
- 184 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
782 WWUS45 KRIW 152013 WSWRIW URGENT - WINTER WEATHER MESSAGE National Weather Service Riverton WY 113 PM MST Wed Nov 15 2017 ...Heavy Snow in the Tetons and Gros Ventre Ranges late tonight through Friday... ...Moderate to heavy snow in much of the western mountains Thursday through Friday... ...Heavy snow possible in the Star Valley late Thursday night through Friday... .A storm system will impact the west from later tonight through Friday. Expect snow in the mountains and a mix of rain and snow in the valleys through Thursday. A cold front will move in Thursday night, dropping snow levels and bring the heaviest period of snow of the storm for Thursday night and Friday. The snow will be accompanied by gusty winds with areas of blowing snow. WYZ012-161200- /O.UPG.KRIW.WS.A.0025.171116T0700Z-171117T1900Z/ /O.NEW.KRIW.WS.W.0021.171116T0700Z-171118T0000Z/ Teton and Gros Ventre Mountains- 113 PM MST Wed Nov 15 2017 ...WINTER STORM WARNING IN EFFECT FROM MIDNIGHT TONIGHT TO 5 PM MST FRIDAY... * WHAT...Heavy snow expected. Travel will be very difficult to impossible, including during the evening commute on Thursday. Total snow accumulations of 1 to 2 feet, with locally higher amounts on the west side of the Tetons, are expected. * WHERE...Teton and Gros Ventre Mountains. * WHEN...Midnight to 5 PM Friday. The heaviest snow from this storm will likely be Thursday night into at least Friday morning when snowfall rates over an inch per hour are quite possible. * ADDITIONAL DETAILS...Be prepared for significant reductions in visibility at times. Travel over Teton Pass will become increasing worse as this system develops. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Winter Storm Warning for snow means severe winter weather conditions are expected. 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. $$ WYZ001-161200- /O.NEW.KRIW.WW.Y.0042.171116T0700Z-171118T0000Z/ Yellowstone National Park- Including the cities of Lake, Mammoth, and Old Faithful 113 PM MST Wed Nov 15 2017 ...WINTER WEATHER ADVISORY IN EFFECT FROM MIDNIGHT TONIGHT TO 5 PM MST FRIDAY... * WHAT...Snow expected. Plan on difficult travel conditions, including during the evening commute on Thursday. Total snow accumulations of 3 to 9 inches on the valley floor, with localized amounts up to 18 inches in the southwest mountains, are expected. * WHERE...Yellowstone National Park. * WHEN...Midnight to 5 PM Friday. * ADDITIONAL DETAILS...Be prepared for reduced visibilities at times. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Winter Weather Advisory for snow means periods of snow will cause primarily travel difficulties. Be prepared for snow covered roads and limited visibilities, and use caution while driving. The latest road conditions for the state you are calling from can be obtained by calling 5 1 1. $$ WYZ002-161200- /O.NEW.KRIW.WW.Y.0042.171116T1200Z-171118T0000Z/ Absaroka Mountains- 113 PM MST Wed Nov 15 2017 ...WINTER WEATHER ADVISORY IN EFFECT FROM 5 AM THURSDAY TO 5 PM MST FRIDAY... * WHAT...Snow expected. Plan on difficult travel conditions, including during the evening commute on Thursday. Damage to trees and power lines is possible. Total snow accumulations of 3 to 9 inches, with localized amounts up to 19 inches in the southwest mountains, are expected. * WHERE...Absaroka Mountains. * WHEN...5 AM Thursday to 5 PM Friday. * ADDITIONAL DETAILS...Be prepared for reduced visibilities at times. Snow levels will be in the 7000 to 8000 foot range Thursday but lower to the valley floor Thursday night. The main threat of snow through Thursday will be in the far western and southwest mountains. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Winter Weather Advisory for snow means periods of snow will cause primarily travel difficulties. Be prepared for snow covered roads and limited visibilities, and use caution while driving. The latest road conditions for the state you are calling from can be obtained by calling 5 1 1. $$ WYZ024-161200- /O.NEW.KRIW.WS.A.0026.171116T1200Z-171118T0000Z/ Salt River and Wyoming Ranges- 113 PM MST Wed Nov 15 2017 ...WINTER STORM WATCH IN EFFECT FROM LATE TONIGHT THROUGH FRIDAY AFTERNOON... * WHAT...Heavy snow possible. Plan on difficult travel conditions. Total snow accumulations of 8 to 16 inches, with localized amounts up to 19 inches, are possible. * WHERE...Salt River and Wyoming Ranges. * WHEN...From late tonight through Friday afternoon. * ADDITIONAL DETAILS...Significant reductions in visibility are possible. The heaviest snowfall rates are expected Thursday night into Friday when snow could fall at an inch per hour or more. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Winter Storm Watch means there is potential for significant snow, sleet or ice accumulations that may impact travel. Continue to monitor the latest forecasts. $$ WYZ014-161200- /O.NEW.KRIW.WS.A.0026.171116T1200Z-171118T0000Z/ Wind River Mountains West- 113 PM MST Wed Nov 15 2017 ...WINTER STORM WATCH IN EFFECT FROM LATE TONIGHT THROUGH FRIDAY AFTERNOON... * WHAT...Heavy snow possible. Plan on difficult travel conditions, including during the evening commute on Thursday. Tree branches could fall as well. Total snow accumulations of 1 to 2 feet are expected on the north half of the range including around Togwotee Pass with only 3 to 5 inches towards South Pass. In fact, South Pass will see mostly rain until Thursday night. * WHERE...Wind River Mountains West. * WHEN...From late tonight through Friday afternoon. * ADDITIONAL DETAILS...Significant reductions in visibility are possible. The heaviest snowfall rates are expected Thursday night and Friday. Togwotee Pass will likely see severely reduced visibility at times and increasingly snow covered roads as the storm wears on Thursday night into Friday. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Winter Storm Watch means there is potential for significant snow, sleet or ice accumulations that may impact travel. Continue to monitor the latest forecasts. $$ WYZ023-161200- /O.NEW.KRIW.WS.A.0026.171117T0700Z-171118T0000Z/ Star Valley- Including the cities of Afton, Alpine, Star Valley Ranch, and Thayne 113 PM MST Wed Nov 15 2017 ...WINTER STORM WATCH IN EFFECT FROM LATE THURSDAY NIGHT THROUGH FRIDAY AFTERNOON... * WHAT...Heavy snow possible. Plan on difficult travel conditions. Total snow accumulations of 3 to 6 inches are possible with higher amounts quite possible towards Alpine. * WHERE...Star Valley. * WHEN...From late Thursday night through Friday afternoon. * ADDITIONAL DETAILS...Significant reductions in visibility are possible. Most of the area will see rain developing tonight and continuing through Thursday. A strong cold front will push through Thursday night changing the rain over to snow. The snow could be quite heavy at times late Thursday night into Friday. The northern part of the valley could see snowfall rates of an inch an hour. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Winter Storm Watch means there is potential for significant snow, sleet or ice accumulations that may impact travel. Continue to monitor the latest forecasts. $$ For more information from the National Weather Service visit http://weather.gov/riw
6 follow-up statements
436 WWUS45 KRIW 160840 WSWRIW URGENT - WINTER WEATHER MESSAGE National Weather Service Riverton WY 140 AM MST Thu Nov 16 2017 ...Heavy Snow in the many of the western mountains through Friday... ...Heavy snow possible in the Star Valley late tonight through Friday... .A storm system will impact the west through Friday. Expect snow in the mountains and a mix of rain and snow in the valleys through this evening. A cold front will move in tonight, dropping snow levels and bring the heaviest period of snow of the storm for Thursday night and Friday morning. The snow will be accompanied by gusty winds with areas of blowing snow. WYZ024-162200- /O.UPG.KRIW.WS.A.0026.171116T1200Z-171118T0000Z/ /O.EXB.KRIW.WS.W.0021.171116T1200Z-171118T0000Z/ Salt River and Wyoming Ranges- 140 AM MST Thu Nov 16 2017 ...WINTER STORM WARNING IN EFFECT FROM 5 AM EARLY THIS MORNING TO 5 PM MST FRIDAY... * WHAT...Periods of snow developing today and continuing through Friday. The heaviest snow is expected late tonight and early Friday. Total accumulations of 8 to 16 inches. * WHERE...Salt River and Wyoming Ranges. * WHEN...5 AM today to 5 PM Friday. The heaviest snow is expected late tonight and early Friday. * ADDITIONAL DETAILS...Be prepared for significant reductions in visibility at times. Travel over Salt Pass will become increasing worse as this system develops. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Winter Storm Warning for snow and blowing snow means severe winter weather conditions are expected. 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. $$ WYZ014-162200- /O.UPG.KRIW.WS.A.0026.171116T1200Z-171118T0000Z/ /O.EXB.KRIW.WS.W.0021.171116T1200Z-171118T0000Z/ Wind River Mountains West- 140 AM MST Thu Nov 16 2017 ...WINTER STORM WARNING IN EFFECT FROM 5 AM EARLY THIS MORNING TO 5 PM MST FRIDAY... * WHAT...Periods of snow developing today and continuing through Friday. Total accumulations of 8 to 16 inches. However, amounts will be lighter around South Pass. * WHERE...West slopes of the Wind River Mountains. * WHEN...This morning through Friday. The heaviest snow is expected late tonight and early Friday. * ADDITIONAL DETAILS...Be prepared for significant reductions in visibility at times. Travel will become difficult as this system develops. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Winter Storm Warning for snow and blowing snow means severe winter weather conditions are expected. If you must travel, keep an extra flashlight, food and water in your vehicle in case of an emergency. The latest road conditions for the state you are calling from can be obtained by calling 5 1 1. $$ WYZ012-162200- /O.CON.KRIW.WS.W.0021.000000T0000Z-171118T0000Z/ Teton and Gros Ventre Mountains- 140 AM MST Thu Nov 16 2017 ...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 5 PM MST FRIDAY... * WHAT...Periods of snow continuing. Travel will be very difficult at times; especially during the evening commute on Thursday. Total snow accumulations of 1 to 2 feet. * WHERE...Teton and Gros Ventre Mountains. * WHEN...Through Friday. The heaviest snow from this storm will likely be Thursday night into at least Friday morning when snowfall rates over an inch per hour are quite possible. * ADDITIONAL DETAILS...Be prepared for significant reductions in visibility at times. Travel over Teton and Togwotee passes will become increasing worse as this system develops. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Winter Storm Warning for snow and blowing snow means severe winter weather conditions are occurring. 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. $$ WYZ015-162200- /O.EXA.KRIW.WW.Y.0042.171116T1200Z-171118T0000Z/ Wind River Mountains East- 140 AM MST Thu Nov 16 2017 ...WINTER WEATHER ADVISORY IN EFFECT FROM 5 AM EARLY THIS MORNING TO 5 PM MST FRIDAY... * WHAT...Periods of snow developing today. Total snow accumulations of 6 to 10 inches; with lighter amounts around South Pass. * WHERE...Wind River Mountains East. * WHEN...This morning through Friday. The heaviest snow is expected later Thursday night and Friday. * ADDITIONAL DETAILS...Be prepared for reduced visibilities at times as well as snow covered roads. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Winter Weather Advisory for snow and blowing snow means periods of snow and blowing snow will cause primarily travel difficulties. Be prepared for snow covered roads and limited visibilities, and use caution while driving. The latest road conditions for the state you are calling from can be obtained by calling 5 1 1. $$ WYZ001-162200- /O.CON.KRIW.WW.Y.0042.000000T0000Z-171118T0000Z/ Yellowstone National Park- Including the cities of Lake, Mammoth, and Old Faithful 140 AM MST Thu Nov 16 2017 ...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 5 PM MST FRIDAY... * WHAT...Periods of snow continuing; mixing with rain at times in the lower elevations today. Total snow accumulations of 3 to 9 inches on the valley floor, with localized amounts up to 18 inches in the southwest mountains, are expected. * WHERE...Yellowstone National Park. * WHEN...Through Friday. * ADDITIONAL DETAILS...Be prepared for reduced visibilities at times. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Winter Weather Advisory for snow and blowing snow means periods of snow and blowing snow will cause primarily travel difficulties. Be prepared for snow covered roads and limited visibilities, and use caution while driving. The latest road conditions for the state you are calling from can be obtained by calling 5 1 1. $$ WYZ002-162200- /O.CON.KRIW.WW.Y.0042.171116T1200Z-171118T0000Z/ Absaroka Mountains- 140 AM MST Thu Nov 16 2017 ...WINTER WEATHER ADVISORY REMAINS IN EFFECT FROM 5 AM EARLY THIS MORNING TO 5 PM MST FRIDAY... * WHAT...Periods of snow expected. Plan on difficult travel conditions. Total snow accumulations of 6 to 10 inches, with locally higher amounts in the southwest. * WHERE...Absaroka Mountains. * WHEN...Today through Friday. * ADDITIONAL DETAILS...Be prepared for reduced visibilities at times. Snow levels will be in the 7000 to 8000 foot range today but lower to the valley floors tonight. The main threat of snow today will be in the far western and southwest mountains. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Winter Weather Advisory for snow and blowing snow means periods of snow and blowing snow will cause primarily travel difficulties. Be prepared for snow covered roads and limited visibilities, and use caution while driving. The latest road conditions for the state you are calling from can be obtained by calling 5 1 1. $$ WYZ023-162200- /O.CON.KRIW.WS.A.0026.171117T0700Z-171118T0000Z/ Star Valley- Including the cities of Afton, Alpine, Star Valley Ranch, and Thayne 140 AM MST Thu Nov 16 2017 ...WINTER STORM WATCH REMAINS IN EFFECT FROM LATE TONIGHT THROUGH FRIDAY AFTERNOON... * WHAT...Heavy snow possible. Plan on difficult travel conditions. Total snow accumulations of 3 to 6 inches are possible with higher amounts possible towards Alpine. * WHERE...Star Valley. * WHEN...From late tonight through Friday afternoon. The heaviest snow is expected late tonight into Friday. * ADDITIONAL DETAILS...Significant reductions in visibility are possible. Mainly rain today will change to snow late tonight. The northern part of the valley could see snowfall rates of an inch an hour. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Winter Storm Watch means there is potential for significant snow, sleet or ice accumulations that may impact travel. Continue to monitor the latest forecasts. $$ For more information from the National Weather Service visit http://weather.gov/riw
041 WWUS45 KRIW 161436 WSWRIW URGENT - WINTER WEATHER MESSAGE National Weather Service Riverton WY 736 AM MST Thu Nov 16 2017 ...Heavy Snow in the many of the western mountains through Friday... ...Heavy snow possible in the Star Valley late tonight through Friday... .A storm system will impact the west through Friday. Expect snow in the mountains and a mix of rain and snow in the valleys through this evening. A cold front will move in tonight, dropping snow levels and bring the heaviest period of snow of the storm for Thursday night and Friday morning. The snow will be accompanied by gusty winds with areas of blowing snow. WYZ012-162300- /O.CON.KRIW.WS.W.0021.000000T0000Z-171118T0000Z/ Teton and Gros Ventre Mountains- 736 AM MST Thu Nov 16 2017 ...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 5 PM MST FRIDAY... * WHAT...Periods of snow continuing. Travel will be very difficult at times; especially during the evening commute on Thursday. Total snow accumulations of 1 to 2 feet with higher amounts quite possible on the west side of the Tetons. As of 5 am this morning, 7 inches of snow had already fallen above 8000 feet. * WHERE...Teton and Gros Ventre Mountains. * WHEN...Through Friday. The heaviest snow from this storm will likely be Thursday night into at least Friday morning when snowfall rates over an inch per hour are quite possible. * ADDITIONAL DETAILS...Be prepared for significant reductions in visibility at times. Travel over Teton and Togwotee passes will become increasing worse as this system develops. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Winter Storm Warning for snow and blowing snow means severe winter weather conditions are occurring. If you must travel, keep an extra flashlight, food and water in your vehicle in case of an emergency. The latest road conditions for the state you are calling from can be obtained by calling 5 1 1. $$ WYZ024-162300- /O.CON.KRIW.WS.W.0021.000000T0000Z-171118T0000Z/ Salt River and Wyoming Ranges- 736 AM MST Thu Nov 16 2017 ...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 5 PM MST FRIDAY... * WHAT...Periods of snow developing today and continuing through Friday. The heaviest snow is expected late tonight and early Friday. Total accumulations of 8 to 16 inches with local amounts up to 2 feet. As of 5 am this morning, 1 to 4 inches of snow had already fallen across much of the area. * WHERE...Salt River and Wyoming Ranges. * WHEN...5 AM today to 5 PM Friday. The heaviest snow is expected late tonight and early Friday. * ADDITIONAL DETAILS...Be prepared for significant reductions in visibility at times. Travel over Salt Pass will become increasing worse as this system develops. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Winter Storm Warning for snow and blowing snow means severe winter weather conditions are occurring. 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. $$ WYZ014-162300- /O.CON.KRIW.WS.W.0021.000000T0000Z-171118T0000Z/ Wind River Mountains West- 736 AM MST Thu Nov 16 2017 ...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 5 PM MST FRIDAY... * WHAT...Periods of snow developing today and continuing through Friday. Total accumulations of 8 to 16 inches with up to 2 feet on the northern part of the range. However, amounts will be lighter around South Pass where only 3 to 5 inches is expected. As of 5 am this morning, the northern part of the range has already seen 3 to 4 inches of new snow. * WHERE...West slopes of the Wind River Mountains. * WHEN...This morning through Friday. The heaviest snow is expected late tonight and early Friday. * ADDITIONAL DETAILS...Be prepared for significant reductions in visibility at times. Travel will become difficult as this system develops. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Winter Storm Warning for snow and blowing snow means severe winter weather conditions are occurring. If you must travel, keep an extra flashlight, food and water in your vehicle in case of an emergency. The latest road conditions for the state you are calling from can be obtained by calling 5 1 1. $$ WYZ001-162300- /O.CON.KRIW.WW.Y.0042.000000T0000Z-171118T0000Z/ Yellowstone National Park- Including the cities of Lake, Mammoth, and Old Faithful 736 AM MST Thu Nov 16 2017 ...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 5 PM MST FRIDAY... * WHAT...Periods of snow continuing; mixing with rain at times in the lower elevations today. Total snow accumulations of 3 to 9 inches on the valley floor, with localized amounts up to 18 inches in the southwest mountains, are expected. As of 5 am, 4 to 7 inches of new snow had already fallen in the mountains. * WHERE...Yellowstone National Park. * WHEN...Through Friday. * ADDITIONAL DETAILS...Be prepared for reduced visibilities at times. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Winter Weather Advisory for snow and blowing snow means periods of snow and blowing snow will cause primarily travel difficulties. Be prepared for snow covered roads and limited visibilities, and use caution while driving. The latest road conditions for the state you are calling from can be obtained by calling 5 1 1. $$ WYZ002-162300- /O.CON.KRIW.WW.Y.0042.000000T0000Z-171118T0000Z/ Absaroka Mountains- 736 AM MST Thu Nov 16 2017 ...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 5 PM MST FRIDAY... * WHAT...Periods of snow expected. Plan on difficult travel conditions. Total snow accumulations of 3 to 10 inches, with over 18 inches expected in the southwest mountains. As of 5 am, 2 to 5 inches had already fallen in the far west and southwest part of the Absaroka range. * WHERE...Absaroka Mountains. * WHEN...Today through Friday. * ADDITIONAL DETAILS...Be prepared for reduced visibilities at times. Snow levels will be in the 7000 to 8000 foot range today but lower to the valley floors tonight. The main threat of snow today will be in the far western and southwest mountains. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Winter Weather Advisory for snow and blowing snow means periods of snow and blowing snow will cause primarily travel difficulties. Be prepared for snow covered roads and limited visibilities, and use caution while driving. The latest road conditions for the state you are calling from can be obtained by calling 5 1 1. $$ WYZ015-162300- /O.CON.KRIW.WW.Y.0042.000000T0000Z-171118T0000Z/ Wind River Mountains East- 736 AM MST Thu Nov 16 2017 ...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 5 PM MST FRIDAY... * WHAT...Periods of snow developing today. Total snow accumulations of 6 to 10 inches; with lighter amounts around South Pass where only 3 to 5 inches is expected. * WHERE...Wind River Mountains East. * WHEN...This morning through Friday. The heaviest snow is expected later Thursday night and Friday. * ADDITIONAL DETAILS...Be prepared for reduced visibilities at times as well as snow covered roads. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Winter Weather Advisory for snow and blowing snow means periods of snow and blowing snow will cause primarily travel difficulties. Be prepared for snow covered roads and limited visibilities, and use caution while driving. The latest road conditions for the state you are calling from can be obtained by calling 5 1 1. $$ WYZ023-162300- /O.CON.KRIW.WS.A.0026.171117T0700Z-171118T0000Z/ Star Valley- Including the cities of Afton, Alpine, Star Valley Ranch, and Thayne 736 AM MST Thu Nov 16 2017 ...WINTER STORM WATCH REMAINS IN EFFECT FROM LATE TONIGHT THROUGH FRIDAY AFTERNOON... * WHAT...Heavy snow possible. Plan on difficult travel conditions. Total snow accumulations of 3 to 6 inches are possible with higher amounts possible towards Alpine. * WHERE...Star Valley. * WHEN...From late tonight through Friday afternoon. The heaviest snow is expected late tonight into Friday. * ADDITIONAL DETAILS...Significant reductions in visibility are possible. Mainly rain today will change to snow late tonight. The northern part of the valley could see snowfall rates of an inch an hour. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Winter Storm Watch means there is potential for significant snow, sleet or ice accumulations that may impact travel. Continue to monitor the latest forecasts. $$ For more information from the National Weather Service visit http://weather.gov/riw
207 WWUS45 KRIW 161959 WSWRIW URGENT - WINTER WEATHER MESSAGE National Weather Service Riverton WY 1259 PM MST Thu Nov 16 2017 ...Heavy Snow in the many of the western mountains through at least Friday afternoon... ...Heavy snow in the Star Valley late tonight through Friday afternoon... ...Periods of snow developing in the Jackson Valley late tonight through Friday afternoon... .A strong storm system will impact the west through at least late Friday afternoon. Expect snow in the mountains and a mix of rain and snow in the valleys through this evening. A cold front will move in tonight, dropping snow levels and bring the heaviest period of snow of the storm for Thursday night and Friday. The snow will be accompanied by gusty winds with areas of blowing snow. WYZ023-171100- /O.UPG.KRIW.WS.A.0026.171117T0700Z-171118T0000Z/ /O.EXB.KRIW.WS.W.0021.171117T0700Z-171118T0000Z/ Star Valley- Including the cities of Afton, Alpine, Star Valley Ranch, and Thayne 1259 PM MST Thu Nov 16 2017 ...WINTER STORM WARNING IN EFFECT FROM MIDNIGHT TONIGHT TO 5 PM MST FRIDAY... * WHAT...Rain will change to snow after midnight with periods of heavy snow showers from early Friday through late Friday afternoon. Snowfall rates could be around an inch per hour on Friday. The northern part of the Star Valley will likely see the heavier snow amounts, especially around Alpine and along the west slope of the foothills. Snowfall amounts will vary from 4 to 8 inches with locally higher amounts. The snow will be accompanied by strong southwest wind 20 to 30 mph and gusty. * WHERE...Star Valley. * WHEN...Midnight to 5 PM Friday. * ADDITIONAL DETAILS...Be prepared for significant reductions in visibility at times. Travel will become difficult as this system develops. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Winter Storm Warning for snow means severe winter weather conditions are expected. 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. $$ WYZ012-171100- /O.CON.KRIW.WS.W.0021.000000T0000Z-171118T0000Z/ Teton and Gros Ventre Mountains- 1259 PM MST Thu Nov 16 2017 ...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 5 PM MST FRIDAY... * WHAT...Periods of snow continuing. Travel will be very difficult at times; especially during the evening commute on Thursday. Total snow accumulations of 1 to 2 feet with higher amounts quite possible on the west side of the Tetons. As of 11 am this morning, 6 to 12 inches of snow had already fallen above 8000 feet. * WHERE...Teton and Gros Ventre Mountains. * WHEN...Through Friday. The heaviest snow from this storm will be tonight through Friday when heavy snow showers are expected. An isolated thunderstorm is even possible Friday. Snowfall rates of 1 to 2 inches per hour will likely occur at times. * ADDITIONAL DETAILS...Be prepared for significant reductions in visibility at times. Travel over Teton and Togwotee passes will become increasing worse as this system develops. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Winter Storm Warning for snow and blowing snow means severe winter weather conditions are occurring. If you must travel, keep an extra flashlight, food and water in your vehicle in case of an emergency. The latest road conditions for the state you are calling from can be obtained by calling 5 1 1. $$ WYZ024-171100- /O.CON.KRIW.WS.W.0021.000000T0000Z-171118T0000Z/ Salt River and Wyoming Ranges- 1259 PM MST Thu Nov 16 2017 ...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 5 PM MST FRIDAY... * WHAT...Periods of snow continuing through Friday. The heaviest snow is expected late tonight through Friday. Total accumulations of 10 to 20 inches with local amounts up to 2 feet. As of 11 am this morning, 3 to 7 inches of snow had already fallen across much of the area. * WHERE...Salt River and Wyoming Ranges. * WHEN...Through 5 PM Friday. The heaviest snow is expected late tonight through Friday afternoon when snowfall rates in excess of an inch per hours will occur at times. An isolated thunderstorm is even possible Friday. * ADDITIONAL DETAILS...Be prepared for significant reductions in visibility at times. Travel over Salt Pass will become increasing worse as this system develops. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Winter Storm Warning for snow and blowing snow means severe winter weather conditions are occurring. 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. $$ WYZ014-171100- /O.CON.KRIW.WS.W.0021.000000T0000Z-171118T0000Z/ Wind River Mountains West- 1259 PM MST Thu Nov 16 2017 ...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 5 PM MST FRIDAY... * WHAT...Periods of snow developing today and continuing through Friday. Total accumulations of 8 to 16 inches with up to 2 feet on the northern part of the range. However, amounts will be lighter around South Pass where only 3 to 5 inches is expected. As of 11 am this morning, the northern part of the range has already seen 4 to 8 inches of new snow. * WHERE...West slopes of the Wind River Mountains. * WHEN...Through Friday afternoon. The heaviest snow is expected late tonight through Friday afternoon when snowfall rates over an inch per hour are expected at times. * ADDITIONAL DETAILS...Be prepared for significant reductions in visibility at times. Travel will become difficult as this system develops. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Winter Storm Warning for snow and blowing snow means severe winter weather conditions are occurring. If you must travel, keep an extra flashlight, food and water in your vehicle in case of an emergency. The latest road conditions for the state you are calling from can be obtained by calling 5 1 1. $$ WYZ013-171100- /O.EXB.KRIW.WW.Y.0042.171117T0700Z-171118T0000Z/ Jackson Hole- Including the city of Jackson 1259 PM MST Thu Nov 16 2017 ...WINTER WEATHER ADVISORY IN EFFECT FROM MIDNIGHT TONIGHT TO 5 PM MST FRIDAY... * WHAT...Rain will change to snow after midnight with periods of snow through about sunset Friday. Some heavy snow showers are expected on Friday with even an isolated thunderstorm possible in the area. Snowfall amounts will vary from 3 to 6 inches with the higher amounts generally in the northern part of the valley and near the mountains. * WHERE...Jackson Hole. * WHEN...Midnight to 5 PM Friday. * ADDITIONAL DETAILS...Be prepared for reduced visibilities at times as well as snow covered roads. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Winter Weather Advisory for snow means periods of snow will cause primarily travel difficulties. Be prepared for snow covered roads and limited visibilities, and use caution while driving. The latest road conditions for the state you are calling from can be obtained by calling 5 1 1. $$ WYZ001-171100- /O.CON.KRIW.WW.Y.0042.000000T0000Z-171118T0000Z/ Yellowstone National Park- Including the cities of Lake, Mammoth, and Old Faithful 1259 PM MST Thu Nov 16 2017 ...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 5 PM MST FRIDAY... * WHAT...Periods of snow continuing; mixing with rain at times in the lower elevations until this evening. Total snow accumulations of 3 to 9 inches on the valley floor, with localized amounts up to 18 inches in the southwest mountains, are expected. As of 11 am, 4 to 8 inches of new snow had already fallen in the mountains. * WHERE...Yellowstone National Park. * WHEN...Through Friday afternoon. * ADDITIONAL DETAILS...Be prepared for reduced visibilities at times. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Winter Weather Advisory for snow and blowing snow means periods of snow and blowing snow will cause primarily travel difficulties. Be prepared for snow covered roads and limited visibilities, and use caution while driving. The latest road conditions for the state you are calling from can be obtained by calling 5 1 1. $$ WYZ002-171100- /O.CON.KRIW.WW.Y.0042.000000T0000Z-171118T0000Z/ Absaroka Mountains- 1259 PM MST Thu Nov 16 2017 ...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 5 PM MST FRIDAY... * WHAT...Periods of snow expected. Plan on difficult travel conditions. Total snow accumulations of 3 to 10 inches, with over 18 inches expected in the southwest mountains. As of 11 am, 3 to 7 inches had already fallen in the far west and southwest part of the Absaroka range. * WHERE...Absaroka Mountains. * WHEN...Today through Friday. * ADDITIONAL DETAILS...Be prepared for reduced visibilities at times. Snow levels will lower to the valley floors tonight. The main threat of snow today will be in the far western and southwest mountains,spreading to all the area early Friday. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Winter Weather Advisory for snow and blowing snow means periods of snow and blowing snow will cause primarily travel difficulties. Be prepared for snow covered roads and limited visibilities, and use caution while driving. The latest road conditions for the state you are calling from can be obtained by calling 5 1 1. $$ WYZ015-171100- /O.CON.KRIW.WW.Y.0042.000000T0000Z-171118T0000Z/ Wind River Mountains East- 1259 PM MST Thu Nov 16 2017 ...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 5 PM MST FRIDAY... * WHAT...Periods of snow through sunset Friday. Total snow accumulations of 6 to 10 inches; with lighter amounts around South Pass where only 3 to 5 inches is expected. * WHERE...Wind River Mountains East. * WHEN...Through late Friday afternoon. The heaviest snow is expected later tonight and Friday. * ADDITIONAL DETAILS...Be prepared for reduced visibilities at times as well as snow covered roads, including South Pass. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Winter Weather Advisory for snow and blowing snow means periods of snow and blowing snow will cause primarily travel difficulties. Be prepared for snow covered roads and limited visibilities, and use caution while driving. The latest road conditions for the state you are calling from can be obtained by calling 5 1 1. $$ For more information from the National Weather Service visit http://weather.gov/riw
877 WWUS45 KRIW 170818 WSWRIW URGENT - WINTER WEATHER MESSAGE National Weather Service Riverton WY 118 AM MST Fri Nov 17 2017 ...Heavy Snow in the many of the western mountains through this afternoon... ...Moderate to occasionally heavy snow in the Star Valley through this afternoon... ...Periods of snow in the Jackson Valley through this afternoon... .A strong storm system will impact the west through Friday afternoon. Expect periods of moderate to heavy snow in the mountains and a mix of rain and snow in the valleys with snow levels lowering in time for the next heaviest period of snow through this morning. The snow will be accompanied at times by gusty winds with areas of blowing snow. WYZ012-172200- /O.CON.KRIW.WS.W.0021.000000T0000Z-171118T0000Z/ Teton and Gros Ventre Mountains- 118 AM MST Fri Nov 17 2017 ...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 5 PM MST THIS AFTERNOON... * WHAT...Moderate to heavy snow and blowing snow occurring. Plan on difficult travel conditions. Additional snow accumulations of 4 to 8 inches, with localized amounts up to 11 inches, are expected. * WHERE...Teton and Gros Ventre Mountains. * WHEN...Until 5 PM today. * ADDITIONAL DETAILS...Winds gusting as high as 35 mph will cause areas of blowing and drifting snow. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Winter Storm Warning for snow and blowing snow means severe winter weather conditions are occurring. 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. $$ WYZ024-172200- /O.CON.KRIW.WS.W.0021.000000T0000Z-171118T0000Z/ Salt River and Wyoming Ranges- 118 AM MST Fri Nov 17 2017 ...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 5 PM MST THIS AFTERNOON... * WHAT...Moderate to heavy snow and blowing snow occurring. Plan on difficult travel conditions. Additional snow accumulations of 3 to 7 inches, with localized amounts up to 10 inches, are expected. * WHERE...Salt River and Wyoming Ranges. * WHEN...Until 5 PM today. * ADDITIONAL DETAILS...Winds gusting as high as 40 mph will cause areas of blowing and drifting snow. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Winter Storm Warning for snow and blowing snow means severe winter weather conditions are occurring. If you must travel, keep an extra flashlight, food and water in your vehicle in case of an emergency. The latest road conditions for the state you are calling from can be obtained by calling 5 1 1. $$ WYZ014-172200- /O.CON.KRIW.WS.W.0021.000000T0000Z-171118T0000Z/ Wind River Mountains West- 118 AM MST Fri Nov 17 2017 ...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 5 PM MST THIS AFTERNOON... * WHAT...Moderate to heavy snow and blowing snow occurring. Plan on difficult travel conditions. Additional snow accumulations of 3 to 7 inches, with localized amounts up to 9 inches, are expected. * WHERE...Wind River Mountains West. * WHEN...Until 5 PM today. * ADDITIONAL DETAILS...Winds gusting as high as 45 mph will cause areas of blowing and drifting snow. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Winter Storm Warning for snow and blowing snow means severe winter weather conditions are occurring. 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. $$ WYZ023-172200- /O.CON.KRIW.WS.W.0021.000000T0000Z-171118T0000Z/ Star Valley- Including the cities of Afton, Alpine, Star Valley Ranch, and Thayne 118 AM MST Fri Nov 17 2017 ...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 5 PM MST THIS AFTERNOON... * WHAT...Moderate to heavy snow occurring. Plan on difficult travel conditions. Additional snow accumulations of 3 to 6 inches are expected. * WHERE...Star Valley. * WHEN...Until 5 PM today. * ADDITIONAL DETAILS...Be prepared for significant reductions in visibility at times. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Winter Storm Warning for snow means severe winter weather conditions are occurring. If you must travel, keep an extra flashlight, food and water in your vehicle in case of an emergency. The latest road conditions for the state you are calling from can be obtained by calling 5 1 1. $$ WYZ001-172200- /O.CON.KRIW.WW.Y.0042.000000T0000Z-171118T0000Z/ Yellowstone National Park- Including the cities of Lake, Mammoth, and Old Faithful 118 AM MST Fri Nov 17 2017 ...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 5 PM MST THIS AFTERNOON... * WHAT...Snow and blowing snow occurring. Plan on slippery road conditions, including during the morning commute. In addition, some reductions to visibility are expected. Additional snow accumulations of 2 to 5 inches, with localized amounts up to 7 inches, are expected. * WHERE...Yellowstone National Park. * WHEN...Until 5 PM today. * ADDITIONAL DETAILS...Winds gusting as high as 30 mph will cause patchy blowing and drifting snow. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Winter Weather Advisory for snow and blowing snow means periods of snow and blowing snow will cause primarily travel difficulties. Be prepared for snow covered roads and limited visibilities, and use caution while driving. The latest road conditions for the state you are calling from can be obtained by calling 5 1 1. $$ WYZ002-172200- /O.CON.KRIW.WW.Y.0042.000000T0000Z-171118T0000Z/ Absaroka Mountains- 118 AM MST Fri Nov 17 2017 ...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 5 PM MST THIS AFTERNOON... * WHAT...Snow and blowing snow occurring. Plan on slippery road conditions. In addition, areas of poor visibility are expected. Additional snow accumulations of 2 to 5 inches, with localized amounts up to 8 inches, are expected. * WHERE...Absaroka Mountains. * WHEN...Until 5 PM today. * ADDITIONAL DETAILS...Winds gusting as high as 40 mph will cause areas of blowing and drifting snow. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Winter Weather Advisory for snow and blowing snow means periods of snow and blowing snow will cause primarily travel difficulties. Be prepared for snow covered roads and limited visibilities, and use caution while driving. The latest road conditions for the state you are calling from can be obtained by calling 5 1 1. $$ WYZ015-172200- /O.CON.KRIW.WW.Y.0042.000000T0000Z-171118T0000Z/ Wind River Mountains East- 118 AM MST Fri Nov 17 2017 ...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 5 PM MST THIS AFTERNOON... * WHAT...Snow and blowing snow occurring. Plan on slippery road conditions. In addition, significant reductions in visibility are expected. Tree branches could fall as well. Additional snow accumulations of 2 to 5 inches, with localized amounts up to 8 inches, are expected. * WHERE...Wind River Mountains East. * WHEN...Until 5 PM today. * ADDITIONAL DETAILS...Winds gusting as high as 50 mph will cause widespread blowing and drifting snow. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Winter Weather Advisory for snow and blowing snow means periods of snow and blowing snow will cause primarily travel difficulties. Be prepared for snow covered roads and limited visibilities, and use caution while driving. The latest road conditions for the state you are calling from can be obtained by calling 5 1 1. $$ WYZ013-172200- /O.CON.KRIW.WW.Y.0042.000000T0000Z-171118T0000Z/ Jackson Hole- Including the city of Jackson 118 AM MST Fri Nov 17 2017 ...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 5 PM MST THIS AFTERNOON... * WHAT...Snow and blowing snow occurring. Plan on difficult travel conditions, including during the evening commute. Additional snow accumulations of 2 to 6 inches are expected. * WHERE...Jackson Hole. * WHEN...Until 5 PM today. * ADDITIONAL DETAILS...Winds gusting as high as 30 mph will cause patchy blowing and drifting snow. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Winter Weather Advisory for snow and blowing snow means periods of snow and blowing snow will cause primarily travel difficulties. Be prepared for snow covered roads and limited visibilities, and use caution while driving. The latest road conditions for the state you are calling from can be obtained by calling 5 1 1. $$ For more information from the National Weather Service visit http://weather.gov/riw
071 WWUS45 KRIW 171722 WSWRIW URGENT - WINTER WEATHER MESSAGE National Weather Service Riverton WY 1022 AM MST Fri Nov 17 2017 ...Snow in the western Wyoming through this afternoon... .A strong Pacific storm system will impact the west through this afternoon. The storm will bring periods of moderate to heavy snow in the mountains and a mix of rain and snow in the valleys. The snow will be accompanied by gusty winds with areas of blowing snow. WYZ012-180000- /O.CON.KRIW.WS.W.0021.000000T0000Z-171118T0000Z/ Teton and Gros Ventre Mountains- 1022 AM MST Fri Nov 17 2017 ...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 5 PM MST THIS AFTERNOON... * WHAT...Moderate to heavy snow and blowing snow occurring. Plan on difficult travel conditions. Additional snow accumulations of 4 to 8 inches, with localized amounts up to 11 inches, are expected. * WHERE...Teton and Gros Ventre Mountains. * WHEN...Until 5 PM today. * ADDITIONAL DETAILS...Winds gusting as high as 35 mph will cause areas of blowing and drifting snow. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Winter Storm Warning for snow and blowing snow means severe winter weather conditions are occurring. 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. $$ WYZ024-180000- /O.CON.KRIW.WS.W.0021.000000T0000Z-171118T0000Z/ Salt River and Wyoming Ranges- 1022 AM MST Fri Nov 17 2017 ...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 5 PM MST THIS AFTERNOON... * WHAT...Moderate to heavy snow and blowing snow occurring. Plan on difficult travel conditions. Additional snow accumulations of 3 to 7 inches, with localized amounts up to 10 inches, are expected. * WHERE...Salt River and Wyoming Ranges. * WHEN...Until 5 PM today. * ADDITIONAL DETAILS...Winds gusting as high as 40 mph will cause areas of blowing and drifting snow. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Winter Storm Warning for snow and blowing snow means severe winter weather conditions are occurring. If you must travel, keep an extra flashlight, food and water in your vehicle in case of an emergency. The latest road conditions for the state you are calling from can be obtained by calling 5 1 1. $$ WYZ014-180000- /O.CON.KRIW.WS.W.0021.000000T0000Z-171118T0000Z/ Wind River Mountains West- 1022 AM MST Fri Nov 17 2017 ...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 5 PM MST THIS AFTERNOON... * WHAT...Moderate to heavy snow and blowing snow occurring. Plan on difficult travel conditions. Additional snow accumulations of 3 to 7 inches, with localized amounts up to 9 inches, are expected. * WHERE...Wind River Mountains West. * WHEN...Until 5 PM today. * ADDITIONAL DETAILS...Winds gusting as high as 45 mph will cause areas of blowing and drifting snow. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Winter Storm Warning for snow and blowing snow means severe winter weather conditions are occurring. 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. $$ WYZ023-180000- /O.CON.KRIW.WS.W.0021.000000T0000Z-171118T0000Z/ Star Valley- Including the cities of Afton, Alpine, Star Valley Ranch, and Thayne 1022 AM MST Fri Nov 17 2017 ...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 5 PM MST THIS AFTERNOON... * WHAT...Moderate to heavy snow occurring. Plan on difficult travel conditions. Additional snow accumulations of 3 to 6 inches are expected. * WHERE...Star Valley. * WHEN...Until 5 PM today. * ADDITIONAL DETAILS...Be prepared for significant reductions in visibility at times. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Winter Storm Warning for snow means severe winter weather conditions are occurring. If you must travel, keep an extra flashlight, food and water in your vehicle in case of an emergency. The latest road conditions for the state you are calling from can be obtained by calling 5 1 1. $$ WYZ001-180000- /O.CON.KRIW.WW.Y.0042.000000T0000Z-171118T0000Z/ Yellowstone National Park- Including the cities of Lake, Mammoth, and Old Faithful 1022 AM MST Fri Nov 17 2017 ...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 5 PM MST THIS AFTERNOON... * WHAT...Snow and blowing snow occurring. Plan on slippery road conditions. In addition, some reductions to visibility are expected. Additional snow accumulations of 2 to 5 inches, with localized amounts up to 7 inches, are expected. * WHERE...Yellowstone National Park. * WHEN...Until 5 PM today. * ADDITIONAL DETAILS...Winds gusting as high as 30 mph will cause patchy blowing and drifting snow. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Winter Weather Advisory for snow and blowing snow means periods of snow and blowing snow will cause primarily travel difficulties. Be prepared for snow covered roads and limited visibilities, and use caution while driving. The latest road conditions for the state you are calling from can be obtained by calling 5 1 1. $$ WYZ002-180000- /O.CON.KRIW.WW.Y.0042.000000T0000Z-171118T0000Z/ Absaroka Mountains- 1022 AM MST Fri Nov 17 2017 ...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 5 PM MST THIS AFTERNOON... * WHAT...Snow and blowing snow occurring. Plan on slippery road conditions. In addition, areas of poor visibility are expected. Additional snow accumulations of 2 to 5 inches, with localized amounts up to 8 inches, are expected. * WHERE...Absaroka Mountains. * WHEN...Until 5 PM today. * ADDITIONAL DETAILS...Winds gusting as high as 40 mph will cause areas of blowing and drifting snow. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Winter Weather Advisory for snow and blowing snow means periods of snow and blowing snow will cause primarily travel difficulties. Be prepared for snow covered roads and limited visibilities, and use caution while driving. The latest road conditions for the state you are calling from can be obtained by calling 5 1 1. $$ WYZ015-180000- /O.CON.KRIW.WW.Y.0042.000000T0000Z-171118T0000Z/ Wind River Mountains East- 1022 AM MST Fri Nov 17 2017 ...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 5 PM MST THIS AFTERNOON... * WHAT...Snow and blowing snow occurring. Plan on slippery road conditions. In addition, significant reductions in visibility are expected. Additional snow accumulations of 2 to 5 inches, with localized amounts up to 8 inches, are expected. * WHERE...Wind River Mountains East. * WHEN...Until 5 PM today. * ADDITIONAL DETAILS...Winds gusting as high as 50 mph will cause widespread blowing and drifting snow. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Winter Weather Advisory for snow and blowing snow means periods of snow and blowing snow will cause primarily travel difficulties. Be prepared for snow covered roads and limited visibilities, and use caution while driving. The latest road conditions for the state you are calling from can be obtained by calling 5 1 1. $$ WYZ013-180000- /O.CON.KRIW.WW.Y.0042.000000T0000Z-171118T0000Z/ Jackson Hole- Including the city of Jackson 1022 AM MST Fri Nov 17 2017 ...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 5 PM MST THIS AFTERNOON... * WHAT...Snow and blowing snow occurring. Plan on difficult travel conditions. Additional snow accumulations of 2 to 4 inches is expected. * WHERE...Jackson Hole. * WHEN...Until 5 PM today. * ADDITIONAL DETAILS...Winds gusting as high as 30 mph will cause patchy blowing and drifting snow. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Winter Weather Advisory for snow and blowing snow means periods of snow and blowing snow will cause primarily travel difficulties. Be prepared for snow covered roads and limited visibilities, and use caution while driving. The latest road conditions for the state you are calling from can be obtained by calling 5 1 1. $$ For more information from the National Weather Service visit http://weather.gov/riw
946 WWUS45 KRIW 180012 WSWRIW URGENT - WINTER WEATHER MESSAGE National Weather Service Riverton WY 512 PM MST Fri Nov 17 2017 ...Snow will diminish by later this evening... .Conditions will gradually improve from northwest to southeast across western and central Wyoming this evening. Light snow showers will continue through the evening across portions of the area, but accumulations will be generally less than an inch and mainly over the mountains. WYZ012-014-023-024-180115- /O.EXP.KRIW.WS.W.0021.000000T0000Z-171118T0000Z/ Teton and Gros Ventre Mountains-Wind River Mountains West- Star Valley-Salt River and Wyoming Ranges- Including the cities of Afton, Alpine, Star Valley Ranch, and Thayne 512 PM MST Fri Nov 17 2017 ...WINTER STORM WARNING HAS EXPIRED... Additional snowfall will be limited to an inch or less as snow decreases this evening. Therefore the Winter Storm Warning was allowed to expire at 5 PM MST. $$ WYZ001-002-013-015-180115- /O.EXP.KRIW.WW.Y.0042.000000T0000Z-171118T0000Z/ Yellowstone National Park-Absaroka Mountains-Jackson Hole- Wind River Mountains East- Including the cities of Lake, Mammoth, Old Faithful, and Jackson 512 PM MST Fri Nov 17 2017 ...WINTER WEATHER ADVISORY HAS EXPIRED... Additional snowfall will be limited to an inch or less as snow decreases this evening. Therefore the Winter Weather Advisory was allowed to expire at 5 PM MST. $$ 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 |
|---|---|---|---|---|
| Nov 15, 12:57 AM MST | High Wind Watch | RIW | Fremont, Natrona, Sweetwater | 24 hr |
| Nov 15, 12:57 AM MST | High Wind Warning | RIW | Fremont, Johnson, Natrona, Park, Sweetwater | 46 hr |
| Nov 15, 1:13 PM MST | Winter Storm Watch | RIW | Fremont, Lincoln, Sublette | 24 hr |
| Nov 15, 1:13 PM MST | Winter Weather Advisory | RIW | Fremont, Hot Springs, Lincoln, Park, Sublette, Teton | 52 hr |
| Nov 15, 1:26 PM MST | High Wind Watch | RIW | Fremont | 9 hr |
Nearby
Winter Storm Warnings in Wyoming, 2017Every winter storm warning in 2017
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.