A brief period of high winds developed near Bordeaux. Occasional gusts of 55 to 65 mph were observed.
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The episode as NWS CYS wrote it up.
A brief period of high winds developed near Bordeaux. Occasional gusts of 55 to 65 mph were observed.
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 Cheyenne, WY wrote its last area forecast discussion before the first event at Feb 16, 6:53 PM MST, 3 hours 37 minutes earlier.
Area Forecast Discussion National Weather Service Cheyenne WY 653 PM MST Thu Feb 16 2017 .UPDATE... Issued at 645 PM MST Thu Feb 16 2017 Latest water vapor loop was showing a fairly distinct shortwave moving through Idaho and Western Montana. This feature is progged to continue pushing northeast and then slide east into the northern Plains tonight into tomorrow. As this shortwave, approaches the area, this will allow for the lee surface trof to develop tonight along and east of the Laramie Range. This will cause the low level pressure gradient to increase and result in stronger wind speeds between 850-750 mb in Central Wyoming. Models are progging the 850-750mb wind speeds to increase around 50 to 55kts around 06z and then slowly taper off after daybreak as the shortwave pushes east. As a result, we are planning on issuing a high wind warning for Bordeaux tonight between 03z-12z. Later shifts may need to extend this warning, depending if the gradient weakens towards daybreak or not. For now, the 03z-12z timeframe looks to be best time for this gap effect. && .SHORT TERM...(Late this afternoon through Saturday night) Issued at 300 PM MST Thu Feb 16 2017 Afternoon water vapor loop depicted a high amplitude upper ridge over the northern Rockies and high plains. Strong subsidence and very dry aloft was producing generally sunny skies. A surface trough along the I-25 corridor in southeast WY was generating locally gusty winds between Cheyenne and Douglas, especially near Bordeaux. Unseasonably mild to warm temperatures were the rule east of the Laramie Range due to the downslope winds. A number of locations exceeded their daily record high temperature for February 16. The high temperature thus far at Cheyenne has been 69, only two degrees shy of the month's all-time record high set in 1962. Relative humidities ranged from 4 percent at Cheyenne to 12 percent at Kimball. 12Z/18Z short range model guidance is in good agreement progging the upper ridge to shift east across the north/central Great Plains and Midwest through Friday. Meanwhile, a shortwave trough will track northeast from the Great Basin into the northern Rockies by Friday morning. This trough will keep the pressure gradient fairly tight across portions of southeast WY tonight, especially between Cheyenne and Wheatland. Sustained wind speeds between 35 and 40 mph with gusts to 50 mph will be possible tonight. Friday will be cooler as a weak Pacific cold front passes through. High temperatures will still average 10-15 degrees above seasonal normals. Models continue to bring advect some Pacific moisture into southern WY late Friday, with light orographic precipitation, mainly in the form of snow for the higher elevations of Carbon County. Generally dry and mild conditions are forecast Saturday as upper ridge builds over the Great Plains. Light snow will be possible over the Snowy/Sierra Madre ranges Saturday night with weak orographic lift and moisture. It will be breezy at times, mainly over the mountains and high valleys with southwest winds gusting to 30 mph. .LONG TERM...(Sunday through Thursday) Issued at 200 PM MST Thu Feb 16 2017 Sunday will be a very nice day with light southerly sfc winds and highs climbing into the 60s yet again for areas to the east of the Laramie Range. A shortwave is progged to move over WY Sunday night and Monday morning. The GFS shows the 850/700 mb CAG-CPR gradient increasing to around 60-65 meters by 12Z Monday, however the other models (ECMWF/Canadian) are not as strong. Thus, would expect a brief period of breezy to windy conditions behind the front, however there is uncertainty on any high winds. With good Pacific moisture streaming into the area and weak orographics, there will likely be a brief period of light snow across the Sierra Madre and Snowy Ranges Sunday night. After a brief cool-down Monday, high temps will be back up into the mid 50s to 60s Tuesday. Although it is still a week out, all the long range models show a closed low developing in the vicinity of western Nebraska by Thursday with widespread rain and snow. && .AVIATION...(For the 00Z TAFS through 00Z Friday evening) Issued at 512 PM MST Thu Feb 16 2017 A weak frontal boundary is expected to pass through areas mainly east of the Laramie Range late tonight into tomorrow morning. Otherwise, VFR conditions will be the rule. && .FIRE WEATHER... Issued at 300 PM MST Thu Feb 16 2017 Elevated fire weather conditions ongoing this afternoon, especially east of the Laramie Range with warm temperatures and relative humidities dropping into single digits and teens. Westerly wind gusts along the Interstate 25 corridor from Chugwater to Wheatland will range from 25 to 35 mph, with gusts to 50 mph near Bordeaux through tonight. Grass fires, if started, will spread rapidly under these conditions. Expect cooler temperatures Friday and Saturday with afternoon humidities from 20 to 30 percent. && .CLIMATE... Issued at 1105 AM MST Thu Feb 16 2017 Unseasonably warm temperatures this afternoon will likely result in record or record-tying highs for February 16: Location Record Forecast High Alliance 68 (1961) 69 Chadron 68 (2011) 68 Scottsbluff 70 (2011) 73 Sidney 70 (2011) 73 Cheyenne 64 (1916) 69 Laramie 57 (1950) 60 Rawlins 50 (2014) 50 && .CYS WATCHES/WARNINGS/ADVISORIES... WY...High Wind Warning until 5 AM MST Friday for WYZ106. NE...None. && UPDATE...REC SHORT TERM...MAJ LONG TERM...ZF AVIATION...REC FIRE WEATHER...MAJ/RJM CLIMATE...MAJ
Hazardous Weather Outlook National Weather Service Cheyenne WY 1028 AM MST Thu Feb 16 2017 NEZ002-003-019>021-054-055-095-096-WYZ101>105-107>109-111>119- 171730- Dawes-Box Butte-Scotts Bluff-Banner-Morrill-Kimball-Cheyenne- North Sioux-South Sioux-Converse County Lower Elevations- Niobrara County-North Laramie Range- Ferris/Seminoe/Shirley Mountains-Shirley Basin-East Platte County- Goshen County-Central Carbon County-Southwest Carbon County- Sierra Madre Range-Upper North Platte River Basin-Snowy Range- Laramie Valley-South Laramie Range-South Laramie Range Foothills- Central Laramie County-East Laramie County- 1028 AM MST Thu Feb 16 2017 This hazardous weather outlook is for portions of western Nebraska...east central Wyoming...south central Wyoming and southeast Wyoming. .DAY ONE...TODAY AND TONIGHT No hazardous weather is expected at this time. .DAYS TWO THROUGH SEVEN...FRIDAY THROUGH WEDNESDAY The probability for widespread hazardous weather is low. .Spotter information statement... Spotter activation will not be needed today or tonight. WYZ106-110-171730- Central Laramie Range and Southwest Platte County- North Snowy Range Foothills- 1028 AM MST Thu Feb 16 2017 This hazardous weather outlook is for portions of south central Wyoming and southeast Wyoming. .DAY ONE...TODAY AND TONIGHT Sustained westerly winds of 30 to 40 mph with gusts to 55 mph will continue through this evening, especially along Interstate 25 between Chugwater and Wheatland. .DAYS TWO THROUGH SEVEN...FRIDAY THROUGH WEDNESDAY The probability for widespread hazardous weather is low. .Spotter information statement... Spotter activation will not be needed today or tonight.
The national radar mosaic for the moment the first event began.
1 high wind. Local standard time, as filed.
A mesonet sensor near Wheatland measured sustained winds of 40 mph or higher, with a peak gust of 64 mph at 16/2315 MST.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Wyoming in 2017Every state in 2017This day in weather historyWarnings in Wyoming, February 2017
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: 683737.