Strong low levels winds mixed to the surface and brought high winds near Clark. The maximum wind gust reported was 67 mph at the site to the south-southwest of Clark.
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The episode as NWS RIW wrote it up.
Strong low levels winds mixed to the surface and brought high winds near Clark. The maximum wind gust reported was 67 mph at the site to the south-southwest of Clark.
The local office's own words before the first event, 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 the first event at Nov 23, 10:10 PM MST, 1 hour 5 minutes earlier.
Area Forecast Discussion National Weather Service Riverton WY 1010 PM MST Sat Nov 23 2019 .SHORT TERM...(This evening through Sunday night) Issued at 206 PM MST Sat Nov 23 2019 Mild and dry conditions continue for most of the area this afternoon, except for the persistent fog in the lower Wind River basin, which are in turn holding temps still in the 20s. Cold pool will remain in the basin overnight, bringing lows down into the teens. Most of the remainder of the region will see lows in the upper 20s to mid 30s. Still expecting a significant wind event for the Cody Foothills overnight, with winds for northern Park County reaching 55 to 60 mph overnight into tomorrow morning. A shortwave in the NW flow aloft will sweep across the region Sunday night, bringing a round of snow showers to the NW mountain ranges. This will be aided by more westerly winds, which will be more favorable for orographic lift. .LONG TERM...(Monday through Saturday) Issued at 333 PM MST Sat Nov 23 2019 Cold air drops into the area on Monday while scattered snow showers continue, but winds will finally decrease. Western mountains will be hit hardest through the day Monday. Monday into Tuesday PoPs will decrease across the area; the western mountains will have the highest PoPs while other areas will dry out. However, this will be a short lived reprieve as the stronger system of the week moves in. The next system is a trough dropping down the west coast Tuesday night into Wednesday. It sets up a SW flow across the region, funneling moisture and snow showers over the area. Because of the prevailing southwesterly flow, western and southern WY will take the brunt of the system initially. Then, the cold front associated with this system will slide through the state on Thursday helping to spread showers to eastern areas. Activity will continue through Friday as the trough is expected to deepen and the low move eastward. If model timing is correct, drier conditions should move in on Saturday. High temperatures through the week will be in the 20s and 30s and lows in the teens to single digits with some of the coldest spots possibly seeing below zero temperatures. Also, gusty winds will develop in the afternoons, especially over the southern wind corridor and along the mountain ranges. && .AVIATION...(For the 06Z TAFS through 06Z Monday) Issued at 1000 PM MST Sat Nov 23 2019 West of the continental divide...KRKS, KJAC, KBPI, KPNA Terminal sites. Local fog with IFR conditions will occur around the KBPI airport overnight. VFR conditions will occur at the terminal sites through the period. The exception will be the KJAC airport after 00Z, when some snow and MVFR conditions will develop and continue through 06Z Monday. Snow will occur in the western mountains late Sunday afternoon through Sunday night with MVFR/IFR conditions and some mountain obscuration. Windy conditions at KRKS will continue through the period. East of the continental divide...KCPR, KLND, KRIW, KCOD, KWRL Terminal sites. VFR conditions will prevail at KCOD and KWRL through 01Z. Then scattered snow showers with MVFR conditions will develop in northern WY potentially impacting the sites. KLND and KRIW will see VFR conditions through the forecast period. KCPR will see VFR conditions through the period along with a gusty wind through at least 00Z Monday. && .FIRE WEATHER... Issued AT 206 PM MST Sat Nov 23 2019 Windy conditions expected tonight and tomorrow for a large part of the state, with the highest winds for 289 and 280, along with the Cody Foothills 276. Some winds in 276 could reach 50 mph during the morning tomorrow. A cold front sweeps across the area later Sunday, with increasing chances for snow Sunday night into Monday. && .RIW WATCHES/WARNINGS/ADVISORIES... High Wind Warning from 11 PM MST this evening through Sunday morning for WYZ003. && SHORT TERM...Straub LONG TERM...Bourque AVIATION...AR FIRE WEATHER...Straub
Hazardous Weather Outlook National Weather Service Riverton WY 704 PM MST Sat Nov 23 2019 WYZ001>020-022>030-241330- 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- 704 PM MST Sat Nov 23 2019 ...High Wind Warning from 11 PM tonight through Sunday Morning for the Cody Foothills... This Hazardous Weather Outlook is for Western and Central Wyoming. .DAY ONE...Tonight Strong to locally high wind speeds and gusts will occur across the Cody Foothills tonight into Sunday morning. .DAYS TWO THROUGH SEVEN...Sunday through Friday. Sunday night and Monday...A storm system will move through the area bringing more cold and snow. Light to moderate amounts of snow are possible. The best chance of snow will be over the west and northwest Sunday night, and then across central and southern areas Monday and Monday night. Wednesday and Thursday...Another storm system impacting the area with potential for more snowfall mainly over the west. .SPOTTER INFORMATION STATEMENT... Weather spotters are encouraged to report significant weather conditions according to standard operating procedures. Team Riverton
The national radar mosaic for the moment the first event began.
1 high wind. Local standard time, as filed.
The wind sensor south of Clark gusted over 58 mph for several hours, with a maximum wind gust of 67 mph.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Wyoming in 2019Every state in 2019This day in weather historyWarnings in Wyoming, November 2019
NOAA National Centers for Environmental Information, Storm Events Database, compiled from the National Weather Service’s monthly Storm Data. Complete through 2026-06; NCEI adds each month about 75 days after it ends and revises past years a few times a year. Rebuilt 2026-09-24. Each event’s entry at NCEI: 861724.