Periodic high gap winds developed between Chugwater and Wheatland.
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Deaths and injuries are direct and indirect together, as the offices filed them. Damage is property and crops in the dollars of the year, not adjusted for inflation, and only where an office estimated it.
The episode as NWS CYS wrote it up.
Periodic high gap winds developed between Chugwater and Wheatland.
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 Jan 17, 10:44 AM MST, 6 minutes earlier.
Area Forecast Discussion National Weather Service Cheyenne WY 1044 AM MST Tue Jan 17 2017 .UPDATE... Issued at 928 AM MST Tue Jan 17 2017 We sent out a quick update to lower wind speeds in Arlington this afternoon. The high wind speeds near Bordeaux are a result of stronger winds around 750mb upstream blowing through the gap just west of Bordeaux. This in combination with the good pressure falls to the northeast of the forecast area should keep the wind speeds fairly steady around Bordeaux this afternoon. && .SHORT TERM...(Today through Thursday) Issued at 245 AM MST Tue Jan 17 2017 Forecast concerns in the short term deal with fog and winds. Long term...could be seeing a significant snow event for beginning of next week. Currently...1038mb surface high over western Wyoming this morning. Skies pretty much clear over southeast Wyoming and Nebraska Panhandle. This has lead to some pretty cold temperatures over our western zones. Rawlins and Laramie down to 1 below zero, Saratoga down to 2 below zero. Patchy dense fog being reported at Laramie. Looks pretty confined, so have held off on a Dense Fog Advisory for the time being. If it becomes more widespread, may need to issue one later though. Dry day today with the surface high dominating the weather. High should stay in place for next 24 hours or so with upper ridge axis passing overhead tonight into Wednesday morning. Did go with persistence and brought fog back into the Laramie Valley tonight. Winds on the increase Wednesday afternoon into Thursday. Craig to Casper gradients on both the GFS and NAM climb to 50mtrs by 18Z Wednesday at 850mbs. So the wind prone areas likely to see gusts to +50MPH...especially the Bordeaux area. Looks pretty warm for Wednesday as well with 700mb temperatures climbing to +6C. Should see highs east of the Laramie Range in the 50s. .LONG TERM...(Thursday Night through Tuesday) Issued at 245 AM MST Tue Jan 17 2017 By Thursday night models show a series of shortwaves working northeast across Wyoming into western Nebraska with increasing midlevel winds around 40 kts. Increased midlevel winds with increasing moisture tap from the southwest will spell increasing chances for orographic snow in the Sierra Madre and Snowy Ranges initially for the early weekend...but remaining dry farther east onto the plains. By late Monday both the GFS and ECMWF are showing a low pressure system deepening across eastern colorado...tracking east northeast into southern Nebraska through Tuesday. Both the GFS and ECMWF are fairly progressive with the track of the low so major snowfall totals don't appear likely given the current projections, but several inches of snowfall over a 12 hour period certainly possible if the models are right. This far out forecast changes for early next week are likely, either way. Just something to take note of for now. && .AVIATION...(For the 18Z TAFS through 18Z Wednesday afternoon) Issued at 1044 AM MST Tue Jan 17 2017 Stratus has cleared at KLAR this morning, with VFR conditions expected through today. Continue to think stratus/fog will return tonight in the Laramie Valley within light winds and a moist boundary layer, so maintained VLIFR TAF for KLAR after 04Z, continuing during the overnight period. VFR conditions are expected at the remaining terminals with breezy conditions mainly at KRWL this afternoon. && .FIRE WEATHER... Issued at 245 AM MST Tue Jan 17 2017 Drier weather pattern for this week with increasing winds for the wind prone areas of southeast Wyoming. By Wednesday, the wind prone areas could be seeing gusts to 50 MPH that could persist into Thursday. With existing snowpack though, fire weather concerns will be minor. Looks like a pretty widespread snow event for next Monday and Tuesday is possible across the area. && .CYS WATCHES/WARNINGS/ADVISORIES... WY...None. NE...None. && UPDATE...REC SHORT TERM...GCC LONG TERM...JG AVIATION...RJM FIRE WEATHER...GCC
HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE CHEYENNE WY 313 AM MST TUE JAN 17 2017 NEZ002-003-019>021-054-055-095-096-181015- DAWES-BOX BUTTE-SCOTTS BLUFF-BANNER-MORRILL-KIMBALL-CHEYENNE- NORTH SIOUX-SOUTH SIOUX- 313 AM MST TUE JAN 17 2017 THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF WESTERN NEBRASKA. .DAY ONE...TODAY AND TONIGHT NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME. .DAYS TWO THROUGH SEVEN...WEDNESDAY THROUGH MONDAY THE PROBABILITY FOR WIDESPREAD HAZARDOUS WEATHER IS LOW. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION WILL NOT BE NEEDED. WYZ101>119-181015- CONVERSE COUNTY LOWER ELEVATIONS-NIOBRARA COUNTY- NORTH LARAMIE RANGE-FERRIS/SEMINOE/SHIRLEY MOUNTAINS- SHIRLEY BASIN-CENTRAL LARAMIE RANGE AND SOUTHWEST PLATTE COUNTY- EAST PLATTE COUNTY-GOSHEN COUNTY-CENTRAL CARBON COUNTY- NORTH SNOWY RANGE FOOTHILLS-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- 313 AM MST TUE JAN 17 2017 THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF EAST CENTRAL WYOMING...SOUTH CENTRAL WYOMING AND SOUTHEAST WYOMING. .DAY ONE...TODAY AND TONIGHT PATCHY DENSE FOG WILL CONTINUE FOR PARTS OF THE LARAMIE VALLEY THROUGH LATE MORNING BEFORE LIFTING. MOTORISTS TRAVELING THROUGH THE LARAMIE VALLEY THIS MORNING SHOULD PLAN TO ENCOUNTER PATCHY DENSE FOG AND BE PREPARED FOR SLOWER TRAVEL. OTHERWISE, NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME. .DAYS TWO THROUGH SEVEN...WEDNESDAY THROUGH MONDAY WINDS WILL INCREASE WEDNESDAY INTO THURSDAY ACROSS SOUTHEAST WYOMING. PORTIONS OF INTERSTATE 80 BETWEEN LARAMIE AND RAWLINS AS WELL AS ALONG INTERSTATE 25 BETWEEN CHUGWATER AND WHEATLAND WILL SEE PERIODS OF WIND GUSTS TO NEAR 50 MPH DURING THE MID-WEEK TIMEFRAME. WINDS THIS STRONG CAN POSE A HAZARD TO THOSE IN LIGHTWEIGHT HIGH PROFILE VEHICLES. OTHERWISE, THE PROBABILITY FOR WIDESPREAD HAZARDOUS WEATHER IS LOW. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION WILL NOT BE NEEDED.
The national radar mosaic for the moment the first event began.
2 high wind. Local standard time, as filed.
The WYDOT sensor at Bordeaux measured sustained winds of 40 mph or higher.
The WYDOT sensor at Bordeaux measured sustained winds of 40 mph or higher, with a peak gust of 58 mph at 18/1235 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, January 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: 677150, 677151.