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A combination of a tight pressure gradient, very strong winds aloft and favorable atmospheric conditions resulted in strong winds on Tuesday December 8th and Wednesday the 9th. The most widepsread high wind event occurred along a cold front that swept across the area Wednesday afternoon and evening.  The strong wind caused some blow overs near Lander and Casper.  Very little snowfall occurred Tuesday or Wednesday.



Semi Blown over near Lander around 430 PM on December 9th Click to enlarge
A semi blown over 6 miles southeast of Lander on Highway 287 (courtesy of County 10)
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  Radar velocity loop showing 50 knot or 58+ mph winds (blue colors = strong inbound winds) coming toward Riverton between 8 PM and 830 PM -  Click to Enlarge


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Wind Map - Click to enlarge
County Location Wind Gust (mph)
Big Horn Cowley Airport 55
Big Horn Greybull Airport 49
County Location Wind Gust (mph)
Fremont Lander Airport 68
Fremont 7 SW Muddy Gap 68
Fremont Beaver Rim 67
Fremont Riverton Airport 64
Fremont Red Canyon 64
Fremont 10 W Fort Washakie 62
Fremont 3 NNW Hudson 59
Fremont 7 NW Lander 59
Fremont 10 N Dubois 56
Fremont Crowheart 49
Fremont 2 ESE South Pass City 48
Fremont Jeffrey City 48
Fremont Dubois Airport 48
County Location Wind Gust (mph)
Hot Springs Thermopolis 65
Hot Springs 10 S Meeteetse 56
County Location Wind Gust (mph)
Johnson 7 SW Barnum 69
Johnson Buffalo Airport 60
Johnson 2 NW Mayoworth 58
Johnson 14 NNW Buffalo 55
Johnson 7 NE Buffalo 51
Johnson 30 ESE Buffalo 46
County Location Wind Gust (mph)
Lincoln Mount Coffin 116
Lincoln Kemmerer Airport 54
Lincoln Cokeville 50
County Location Wind Gust (mph)
Natrona Casper - Outer Drive 69
Natrona 16 S Hiland 66
Natrona Hiland 52
Natrona Casper Airport 48
Natrona Twenty Mile Hill 48
County Location Wind Gust (mph)
Park 5 WNW Clark 103
Park Chief Joseph 96
Park 8 SSW Clark 70
Park Cody 64
Park 10 WNW Cody 61
Park 20 SW Cody 60
Park Powell Airport 53
Park Crandall Creek 52
Park Meeteetse 50
Park 3 E Pahaska 48
County Location Wind Gust (mph)
Sublette 21 W Big Piney 66
Sublette Big Piney Airport 62
Sublette Pinedale Airport 46
County Location Wind Gust (mph)
Sweetwater Rock Springs Airport 56
Sweetwater Farson 52
Sweetwater Green River 52
Sweetwater 15 SE Rock Springs 48
Sweetwater Continental Divide 45
County Location Wind Gust (mph)
Teton Jackson Hole - Summit 71
Teton 4 N Moose 55
Teton Jackson Airport 40
County Location Wind Gust (mph)
Washakie 15 SSW Big Trails 47




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