Alert archive / Wyoming / Winter Storm Warnings in 2018
Winter Storm Warning 5, NWS Riverton, WY
NWS Riverton, WY issued this winter storm warning at Feb 8, 2018, 2:33 AM MST for 7 counties in Wyoming. It took effect at Feb 8, 2018, 5:00 AM MST. It was in force for 35 hr. No storm report in the archive falls inside the area while it was in force.
The area
The counties it named.
The facts
- Issued
- Feb 8, 2018, 2:33 AM MST (09:33 UTC)
- In effect from
- Feb 8, 2018, 5:00 AM MST
- Expired
- Feb 9, 2018, 4:25 PM MST
- In force
- 35 hr
- Issued by
- NWS Riverton, WY
Counties Big Horn County, WY, Fremont County, WY, Hot Springs County, WY, Johnson County, WY, Natrona County, WY, Park County, WY, Washakie County, WY
The radar
The Riverton/Lander radar (KRIW), 93 km from the middle of the area, began a volume at 09:30 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 forecasters said that day
The local office's own words before this winter storm 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 winter storm warning went out at Feb 7, 10:57 PM MST, 3 hours 36 minutes earlier.
Area forecast discussion, Feb 7, 10:57 PM MST, 3 hours 36 minutes before
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</html>Hazardous weather outlook, Feb 7, 12:28 PM MST, 14 hours 5 minutes before
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</html>In the hours before
Special weather statement, Feb 8, 2:09 AM MST, 24 minutes before
Special Weather Statement National Weather Service Riverton WY 209 AM MST Thu Feb 8 2018 WYZ005>007-082100- Southwest Big Horn Basin-Southeast Big Horn Basin- Owl Creek and Bridger Mountains- Including the cities of Thermopolis and Worland 209 AM MST Thu Feb 8 2018 After a fairly mild day today, a strong arctic cold front will push south across the area tonight and Friday with gusty north wind, snow and sharply falling temperatures. Snowfall amounts of 3 to 5 inches are possible with 6 to 8 inches in the Owl Creek and Bridger Mountains. A period of gusty north wind Thursday night with falling temperatures will create some wind chills of zero to 10 below zero. Many locations will see temperatures dropping below zero Friday night. Stay tuned for the latest statements and forecast for this abrupt change in the weather back to cold and snow. WYZ017-018-082100- Wind River Basin-Lander Foothills- Including the cities of Riverton, Shoshoni, and Lander 209 AM MST Thu Feb 8 2018 After a mild day today, a strong cold front will push south across the area late tonight and Friday with gusty north wind, snow and sharply falling temperatures. Snowfall amounts of 2 to 3 inches are possible with locally higher amounts. A period of gusty north wind late Thursday night and Friday morning with falling temperatures will create some wind chills to near zero. Stay tuned for the latest statements and forecast for this abrupt change in the weather back to cold and snow. WYZ020-022-082100- Natrona County Lower Elevations-Casper Mountain- Including the city of Casper 209 AM MST Thu Feb 8 2018 Strong southwest winds will blow today ahead of a strong cold front which will blast south across the area late Thursday night and Friday. Wind gusts of 40 to 50 mph will be common with localized gusts around 60 mph near Casper Mountain, including Outer Drive. Snow will gradually develop behind this cold front on Friday and continue into early Saturday. Snowfall amounts of 2 to 3 inches are expected Friday and Friday night. A period of gusty north wind of 20 to 30 mph later Thursday night and Friday morning will create wind chills from around zero to 10 below zero. Stay tuned for the latest statements and forecast for this abrupt change in the weather back to cold and snow. WYZ019-082100- Green Mountains and Rattlesnake Range- Including the city of Jeffrey City 209 AM MST Thu Feb 8 2018 Strong southwest winds will blow today ahead of a strong cold front which will blast south across the area late tonight and Friday. Wind gusts of 40 to 50 mph will be common with localized gusts around 60 mph. Snow will gradually develop behind this cold front on Friday and continue into early Saturday. Snowfall amounts of 1 to 3 inches are expected Friday and Friday night with locally higher amounts in the mountains. A period of gusty north wind of 20 to 30 mph later Thursday night and Friday morning will create wind chills from around zero to 10 below zero. Stay tuned for the latest statements and forecast for this abrupt change in the weather back to cold and snow. WYZ014-015-082100- Wind River Mountains West-Wind River Mountains East- 209 AM MST Thu Feb 8 2018 Strong southwest winds will blow along and east of the divide through tonight ahead of an cold front. Wind gusts of 40 to 50 mph will be common with gusts to 60 mph over open areas and exposed ridges. Snow will also become more widespread and spread south down the range Thursday into Thursday night ahead of an arctic cold front. Snowfall amounts between Thursday and early Saturday will likely range from 5 to 10 inches across the north end of the range to 3 to 6 inches on the south end. Stay tuned for the latest statements and forecast for this abrupt change in the weather back to cold and snow. WYZ012-082100- Teton and Gros Ventre Mountains- 209 AM MST Thu Feb 8 2018 Snow will fall across the area at times through Friday. Total snowfall of 5 to 10 inches is expected with locally higher amounts. Gusty west wind today and tonight will create periods of blowing and drifting snow, especially over the exposed locations and ridges. Travellers can expect snow covered roads and reduced visibility over Teton Pass.
The office that day
Everything else NWS Riverton, WY issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Feb 8, 2:33 AM MST | Winter Weather Advisory | RIW | Big Horn, Fremont, Hot Springs, Johnson, Natrona, Park and 3 more | 52 hr |
Nearby
Winter Storm Warnings in Wyoming, 2018Every winter storm warning in 2018
Sources
The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; radar from the NEXRAD Level II archive.