A brief strong wind event occurred the morning of 13 November in WYZ110 and 116 of southeast Wyoming.
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The episode as NWS CYS wrote it up.
A brief strong wind event occurred the morning of 13 November in WYZ110 and 116 of southeast Wyoming.
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 Nov 13, 4:32 AM MST, 3 hours 42 minutes earlier. Its key messages:
Area Forecast Discussion National Weather Service Cheyenne WY 432 AM MST Wed Nov 13 2024 .KEY MESSAGES... - Windy conditions will occur especially Wednesday and Thursday afternoons for the wind prone locations of southeast Wyoming such as Arlington, Bordeaux and the I-80 Summit. - An active pattern continues through the middle of next week, but precipitation chances will be limited. Expect occasionally windy conditions and a modest cold front Saturday, followed by a more potent cold front Monday/Tuesday. && .SHORT TERM /THROUGH THURSDAY NIGHT/... Issued at 324 AM MST Wed Nov 13 2024 Precipitation is diminishing across the forecast area early this morning as the upper-level trough quickly exits to the east. A few webcams by Arlington and the Interstate 80 summit show a few lingering snow showers, but these too should dissipate by daybreak, leaving mostly sunny but breezy conditions for the rest of the day. The main weather concern for today will be elevated to potentially high winds across the usual southeast Wyoming wind prones. With the exiting trough to the east and high pressure to the west, a decent MSLP gradient will set up along and west of the Laramie Range. Winds aloft will respond, maxing out around 50 kts over the wind prones, albeit briefly. Subsidence is strong enough that some of these winds could make it down to the surface. However, other parameters like CAG-CPR 700 mb height gradients are rather weak with values around 45 meters. This likely will lead to elevated winds, or brief gusts to 60 MPH in the wind prones. Decided to hold off on any high wind headlines at this time. In-house guidance has been suggesting high winds over the Interstate 80 summit all night, but the strongest observed gust so far has been around 55 MPH at one site. Surrounding sites to this observation have been 10 to 15 MPH weaker. Mixing during the day will likely make these winds stronger, however, the most likely outcome for winds today will be isolated and brief gusts to 60 MPH in the wind prone areas. Areas outside of the wind prones can also expect a blustery day, especially for those in southeast Wyoming. The wind will help add to the chill today. Being post frontal, cooler high temperatures are also expected. Most locations will be near to slightly below average for mid-November. Luckily, drier conditions and mostly sunny skies are expected. Shallow ridging over the center of the country on Thursday will lead to a rapid warm up. 700 mb temperatures of 0C to +4C will lead to above average high temperatures in the upper 50s and low 60s for areas east of the Laramie Range. Unfortunately, breezy conditions will persist throughout the day Thursday with near zonal flow aloft, as well as the CWA sitting in the exit region of a 250 mb jet. However, conditions will remain dry and sunny thanks to the upper- level ridging. && .LONG TERM /FRIDAY THROUGH TUESDAY/... Issued at 324 AM MST Wed Nov 13 2024 No major changes were made to the long term forecast with this update. An active synoptic weather pattern is anticipated, but it is looking fairly difficult to get much precipitation out of any individual storm system. Picking up on Friday, mild air remains over the area with southwest flow aloft ahead of the next trough moving across the Great Basin area. Temperatures aloft remain fairly warm Friday, but slightly more cloud cover and southerly surface winds over the High Plains are likely to result in a cooler day than Thursday. As with the last several synoptic troughs to move across the west, this one is expected to split once again. The northern piece passes through Friday night into Saturday, leading to cooler temperatures and breezy conditions Saturday. Meanwhile, the southern piece of the trough will drift across the far SW US or NW Mexico through the weekend, largely out of the picture until early next week. Breezy to windy conditions should continue into Sunday, with a chance for a marginal high wind event in the wind prone areas. Subtle ridging will try to rebound around the closed low to the south on Sunday, pushing 700-mb temperatures back up to 0 to -2C and highs to near normal values for Sunday. By the early part of next week, the southern closed low will begin to eject eastward into the central Plains. Almost every ensemble member now shows the upper level low track a bit too far east to give much in the way of precipitation to our area. Meanwhile, another more potent trough dives down from the northwest, poised to absorb the closed low and become a larger and colder upper level low over the central CONUS by midweek. There is some uncertainty for Monday's forecast owing to the timing of each system, as well as in the precipitation front associated with both the southern closed low and approaching northern shortwave trough. As with the last system, there is some possibility ensembles are under-dispersed with the track of the closed low ejection, so maintained low end PoPs for the entire area Monday into Monday night. There is fairly high confidence that Tuesday will be another very cold day. Ensemble median 700-mb temperatures plummet to around -13C by Tuesday afternoon, supporting highs some 10-15F colder than average once again. Northwest winds will add to the chill, and will have another chance for marginal high winds especially in the I-80 summit area. && .AVIATION /12Z TAFS THROUGH 12Z THURSDAY/... Issued at 428 AM MST Wed Nov 13 2024 VFR conditions expected for the forecast period. Drier air is moving into the area this morning, which should bring low clouds and vicinity shower activity to an end within the next few hours. After that, the main aviation concern will be gusty northwest winds at all terminals with widespread gusts to around 30 knots expected. Winds will ease around sunset and turn more southwest overnight as high level cloud cover increases. && .CYS WATCHES/WARNINGS/ADVISORIES... WY...Winter Weather Advisory until 8 AM MST this morning for WYZ112. NE...None. && SHORT TERM...SF LONG TERM...MN AVIATION...MN
Hazardous Weather Outlook National Weather Service Cheyenne WY 247 AM MST Wed Nov 13 2024 NEZ002-003-019>021-054-055-095-096-WYZ101>119-141000- 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-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- 247 AM MST Wed Nov 13 2024 This hazardous weather outlook is for portions of panhandle Nebraska...east central Wyoming...south central Wyoming and southeast Wyoming. .DAY ONE...TODAY Breezy to windy conditions are expected today. Strongest winds will be in the southeast Wyoming wind prones where winds could occasionally gust up to 60 MPH. .DAYS TWO THROUGH SEVEN...THURSDAY THROUGH MONDAY 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.
WYDOT sensor Foote Creek (WY22) located 3 miles northwest of Arlington on Interstate 80 reported this peak wind gust.
WYDOT weather sensor Vedauwoo (VDW) reported this peak wind gust.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Wyoming in 2024Every state in 2024This day in weather historyWarnings in Wyoming, November 2024
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: 1216443, 1216442.