A brief period of high gap winds developed across the North Snowy Range Foothills.
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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.
A brief period of high gap winds developed across the North Snowy Range Foothills.
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 Mar 2, 10:58 AM MST, 2 minutes earlier.
Area Forecast Discussion National Weather Service Cheyenne WY 1058 AM MST Fri Mar 2 2018 .SHORT TERM...(Today and Saturday night) Issued at 247 AM MST Fri Mar 2 2018 Today...Decent warming trend continues today with southwest flow aloft, limited cloud cover and 700 mb temperatures rising to near -1 Celsius, yielding maximum temperatures in the upper 40s to lower 60s at lower elevations. Brisk 50 to 55 knot winds aloft over Carbon County near 700 mb may help yield 50 knot gusts near Arlington and Elk Mountain, thus will continue the high wind warning there. Tonight...Expect winds to partially decouple at Arlington, thus ending the high wind threat in the early evening. Relatively mild overnight with southwest flow aloft and a warmer than normal airmass in place. Saturday...Slow warming trend continues based on thickness and 700 mb temperature trends, along with limited cloud cover. Progged thicknesses yield maximum temperatures mainly from the middle 50s to upper 60s at lower elevations east of I-25. Saturday night...Next shortwave trough aloft approaches from western Wyoming, producing a slight chance of snow late over far western Carbon County, dry elsewhere. Low temperatures in the 20s at lower elevations. .LONG TERM...(Sunday through Thursday) Issued at 310 AM MST Fri Mar 2 2018 Models are in slightly better agreement with the late weekend Pacific storm system, although they are still having trouble with the specifics as it redevelops across the plains late on Sunday. Models have trended further north with the center of the upper level low before the surface low rapidly intensifies to the east of the forecast area. With the surface low developing far to the east, across Kansas and central Nebraska Sunday evening, widespread accumulating snow is looking less likely. Which is especially true along the I-80 corridor, but strong west to northwest winds are looking more favorable. Continued to increase winds, especially across the wind prone areas and all of the eastern plains late Sunday through Monday of next week. High Wind headlines are possible if this trend continues into the weekend. Another concern that models are indicating is the chance of thunderstorm activity Sunday afternoon ahead of the upper level low/trough axis. With LI's of -1c to -3c along with some moisture along and behind the front, need to keep an eye on this threat since it is getting close to that time of the year. Did not add Tstorms in the forecast quite yet since probabilities are still low and generally under 10 percent. Since the system is rather progressive initially, do not expect much snow accumulation even up north. The mountains may see 6 to 12 inches, with accumulations below 3 inches from Douglas eastward into the northern Nebraska panhandle. Otherwise, expect cooler than average temperatures into Tuesday as the storm system slowly moves eastward. A slow warming trend is still expected by the middle of next week as an upper level ridge axis builds over the northern and central Rockies by Wednesday. Expect highs to return to the 50's to near 60 by Thursday afternoon across the High Plains. && .AVIATION...(For the 18Z TAFS through 18Z Saturday afternoon) Issued at 1057 AM MST Fri Mar 2 2018 VFR prevails with SKC conditions. Strong and gusty winds along and west of the Laramie Range will persist this afternoon, w/ gusts to 45 knots possible at KRWL/KLAR. && .FIRE WEATHER... Issued at 247 AM MST Fri Mar 2 2018 Except for minimum humidities from 15 to 20 percent this afternoon and Saturday afternoon from Laramie to Sidney, no concerns were noted. && .CYS WATCHES/WARNINGS/ADVISORIES... WY...High Wind Warning until 6 PM MST this evening for WYZ110. NE...None. && SHORT TERM...RUBIN LONG TERM...TJT AVIATION...CLH FIRE WEATHER...RUBIN
Hazardous Weather Outlook National Weather Service Cheyenne WY 332 AM MST Fri Mar 2 2018 WYZ101>119-031045- 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- 332 AM MST Fri Mar 2 2018 This hazardous weather outlook is for portions of east central Wyoming...south central Wyoming and southeast Wyoming. .DAY ONE...TODAY AND TONIGHT A High Wind Warning is in effect from 7 am to 6 pm today for Arlington and Elk Mountain and the North Snowy Range Foothills for southwest winds of 35 to 45 mph with gusts to 65 mph. .DAYS TWO THROUGH SEVEN...SATURDAY THROUGH THURSDAY Sunday and Monday will be much colder and windy along with a chance for accumulating snow Sunday and Sunday night. .Spotter information statement... Spotter activation will not be needed. NEZ002-003-019>021-054-055-095-096-031045- Dawes-Box Butte-Scotts Bluff-Banner-Morrill-Kimball-Cheyenne- North Sioux-South Sioux- 332 AM MST Fri Mar 2 2018 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...SATURDAY THROUGH THURSDAY Sunday and Monday will be much colder and windy along with a chance for accumulating snow Sunday and Sunday night. .Spotter information statement... Spotter activation will not be needed. Rubin
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE CHEYENNE WY
1024 AM MST FRI MAR 2 2018
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
1000 AM NON-TSTM WND GST 7 ESE ARLINGTON 41.55N 106.08W
03/02/2018 M62 MPH CARBON WY DEPT OF HIGHWAYS
COOPER COVE WYDOT SENSOR. SUSTAINED AT 39 MPH.
&&
HAMMERThe national radar mosaic for the moment the first event began.
5 high wind. Local standard time, as filed.
The WYDOT sensor at Interstate 80 mile post 249 measured sustained winds of 40 mph or higher.
The WYDOT sensor at Arlington measured peak wind gusts of 58 mph.
The WYDOT sensor at Foote Creek measured sustained winds of 40 mph or higher.
The WYDOT sensor at Cooper Cove measured peak wind gusts of 63 mph.
The WYDOT sensor at Dana Ridge measured peak wind gusts of 58 mph.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Wyoming in 2018Every state in 2018This day in weather historyWarnings in Wyoming, March 2018
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: 747800, 747795, 747798, 747796, 747797.