Strong winds reported near Arlington Wyoming 6 April 2023.
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The episode as NWS CYS wrote it up.
Strong winds reported near Arlington Wyoming 6 April 2023.
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 Apr 6, 4:27 AM MST, 2 hours 47 minutes earlier.
Area Forecast Discussion National Weather Service Cheyenne WY 527 AM MDT Thu Apr 6 2023 .SHORT TERM...(Today through Saturday) Issued at 315 AM MDT Thu Apr 6 2023 Upper level trough extending from closed low north of Lake Superior into the northern and central High Plains early this morning will progress east into the Midwest and Ohio Valley through Friday. Likewise, a upper level ridge from British Columbia to California will move across the Intermountain West, Rockies and Great Plains during the next 24 to 48 hours. Lee side surface trough develops along the Laramie Range, with a sprawling ridge to the west. The low level pressure/height gradients increase to 45-55 meters early this morning then gradually decrease this afternoon. NAM12 700mb downward omega peaks between 09Z and 12Z this morning over the central Laramie Range. 700-800mb west-southwest flow peaks around 40 kt this morning. Local RF high wind probabilities at Arlington are 45 percent, and 35-40 percent at Bordeaux. The tighter surface gradient will be positioned between Arlington and Bordeaux. This will be a low-end high wind event with periodic west-southwest wind gusts of 55-65 MPH, especially near Arlington/Elk Mountain along I-80. I-25 near Bordeaux may register gusts up to 55 MPH. The High Wind Warning for the North Snowy Range Foothills will remain in effect from 3 AM through 6 PM MDT this evening. It will be breezy to windy for the majority of the CWA today with 30-40 MPH gusts outside the wind-prone areas. Precipitation chances will be nil through Friday night. A upper level trough is progged to move east across the northern and central Rockies Saturday afternoon. The GFS is trending a bit stronger with this trough and produces light showers along the CO border extending into the far southern Sierra Madre and Laramie Range in the afternoon. Temperatures will begin to moderate today with 700mb temperatures from -8C to -10C. Expect afternoon highs in the 30s and 40s, which are still 10 degrees cooler than average. The warming trend kicks into high gear Friday and Saturday with 700mb temperatures climbing above 0C for much of the plains of southeast WY and NE Panhandle. Highs in the 50s to near 60 Friday will warm to the low to mid 60s Saturday. It will be breezy both days, especially along and west of I-25. .LONG TERM...(Saturday night through Wednesday) Issued at 315 AM MDT Thu Apr 6 2023 No major changes to the long term forecast with this update. We are still on track for a long awaited reprieve from the harsh winter weather that has persisted across Wyoming and western Nebraska this season, with well-above average temperatures and dry conditions likely for the first half of next week. Forecast uncertainty increases somewhat towards the end of the week, when a more active weather pattern may try to resume. Starting on Saturday night, we will have a weak shortwave passing by the area. This will mostly just contribute increased cloud cover, but we may see some snow showers in the mountains, as well as a few possible light rain showers over the plains, but only had confidence to add the former to the official forecast at this time. This activity should clear out by Sunday morning as more sunshine works into the area and a strong ridge begins to establish itself over the Rockies. 700-mb temperatures will continue to climb, from around 0C per the GEFS mean at 00z Sunday, to +8C or even higher by 00Z Tuesday. 500-mb heights could approach 580 dm Monday through Wednesday, supporting a period of well-above average temperatures. Normal highs this time of year are generally around 50F for areas west of the Laramie Range, in the mid 50s for SE Wyoming east of the Laramie Range, and in the upper 50s to low 60s in the Nebraska Panhandle. Forecast highs Sunday are generally 5-10F above this, except areas with deeper snow cover (Rawlins, Lusk, Chadron), that may stay near to slightly below normal. Monday and Tuesday look even warmer as the ridge axis shifts to the east and west to southwest winds aid warm air advection and contribute some additional downslope warming. Tuesday looks like the warmest day of the week, with some areas potentially approaching 20F warmer than normal. While Carbon county may remain in the 50s, most other lower elevation spots should surge to the upper 60s to 70s. We may even see some 80s showing up around the North Platte River Valley! While the warmth will be a welcome change to many after the long, harsh 2022-23 winter, we will have to be alert for flood concerns stemming from the rapid melt of the low elevation snowpack. While some high elevation melt is very likely, it probably won't be enough to raise the rivers. But, considering how large some of the valley snowpack is this spring, we could see some ponding and small stream flooding, as well as possibly ice jam concerns Sunday through Wednesday of next week. We may also have to watch for some high wind potential, but the parameter space generally doesn't look favorable for that at this time. Widespread breeziness is likely on Monday and Tuesday though, with elevated winds in the wind prone areas. Looking ahead to the latter part of next week, forecast uncertainty increases considerably. Most models agree that another large Pacific trough will start to work into the northwest on Tuesday, but there is quite a bit of spread in how strong this will be, and how long it will take to track eastward. At the early end, this comes through on Wednesday and we see cooler temperatures and precipitation chances return quickly, but the system could also hold off until the end of the week as shown on a few ensemble members. Details with this are highly uncertain, but it is not out of the question that we end up in the warm sector of a strong upper level low and manage to kick off some afternoon convection Wednesday, Thursday, or Friday. A further south and east track would also mean another round of colder temperatures and frozen precipitation. It is too soon to get into the details, but will be monitoring this period in the coming days. && .AVIATION...(For the 12Z TAFS through 12Z Friday morning) Issued at 525 AM MDT Thu Apr 6 2023 VFR conditions expected for the forecast period, though another brief drop to MVFR CIGs can't be ruled out at Wyoming terminals for the next few hours. Otherwise, mainly clear skies anticipated Thursday with some breezy westerlies gusting to around 25 to 30 knots at times. Winds drop off after sunset once again. && .FIRE WEATHER... Issued at 315 AM MDT Thu Apr 6 2023 Fire weather concerns will be low through the weekend with a shrinking snow pack as temperatures moderate to above seasonal normals. Minimum humidities will gradually lower each day. Gusty winds, low humidity and warm temperatures will lead to elevated fire weather conditions early next week. Chances for measurable precipitation and slightly cooler temperatures will return during the middle and latter part of next week. && .CYS WATCHES/WARNINGS/ADVISORIES... WY...High Wind Warning until 6 PM MDT this evening for WYZ110. NE...None. && SHORT TERM...MAJ LONG TERM...MN AVIATION...MN FIRE WEATHER...MAJ
Hazardous Weather Outlook National Weather Service Cheyenne WY 459 AM MDT Thu Apr 6 2023 NEZ002-003-019>021-054-055-095-096-WYZ101>105-107>109-111>119- 071100- Dawes County-Box Butte County-Scotts Bluff County-Banner County- Morrill County-Kimball County-Cheyenne County- Northern Sioux County-Southern Sioux County- 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- 459 AM MDT Thu Apr 6 2023 This hazardous weather outlook is for portions of panhandle 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 A significant warmup is expected this weekend and early next week, which may lead to rapid melting of low elevation snowpack. .Spotter information statement... Spotter activation will not be required. WYZ106-110-071100- Central Laramie Range and Southwest Platte County- North Snowy Range Foothills- 459 AM MDT Thu Apr 6 2023 This hazardous weather outlook is for portions of south central Wyoming and southeast Wyoming. .DAY ONE...TODAY AND TONIGHT Strong west to southwest winds will develop this morning and gradually diminish this afternoon. Gusts of 55 to 65 MPH are expected. The strong winds will produce blowing and drifting snow. .DAYS TWO THROUGH SEVEN...FRIDAY THROUGH WEDNESDAY The probability for widespread hazardous weather is low. .Spotter information statement... Spotter activation will not be required.
The national radar mosaic for the moment the first event began.
1 high wind. Local standard time, as filed.
WYDOT site County Road 402, 3 miles east southeast of Elk Mountain reported this peak wind gust. Arlington site also reported wind gusts of 58 mph during this time as well.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Wyoming in 2023Every state in 2023This day in weather historyWarnings in Wyoming, April 2023
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: 1079978.