Alert archive / Wyoming / Severe Thunderstorm Warnings in 2022
Severe Thunderstorm Warning 105, NWS Cheyenne, WY
NWS Cheyenne, WY issued this severe thunderstorm warning at Jul 29, 2022, 5:45 PM MDT for Goshen County, Niobrara County, Wyoming. It was in force for 45 min. No storm report in the archive falls inside the area while it was in force.
The area
The counties it named.
The facts
- Issued
- Jul 29, 2022, 5:45 PM MDT (23:45 UTC)
- Expired
- Jul 29, 2022, 6:30 PM MDT
- In force
- 45 min
- Issued by
- NWS Cheyenne, WY
- Area
- Storm-based polygon
- Hail
- 1.0 in
- Wind
- 50.0 mph
Counties Goshen County, WY, Niobrara County, WY
The radar
The Cheyenne radar (KCYS), 161 km from the middle of the area, began a volume at 23:46 UTC, the scan nearest the moment this went out.
Open the radar archive at this moment
The archived warnings, watches and discussions in force at that minute are drawn over the scan, this one among them.
The nearest sounding before it
Rapid City, SD (KUNR), launched 12:00Z, 11.8 hours before the alert went out and 208 km from the middle of its area. This is the routine balloon launch nearest before it, the air the forecaster had in hand, not a measurement taken for the alert.
- Mixed-layer CAPE
- 0 J/kg
- Mixed-layer CIN
- No buoyant parcel
- Mixed-layer LCL
- 1782 m above ground
- 0-6 km bulk shear
- 14 kt
- 0-1 km storm-relative helicity
- -26 m²/s²
- 0-3 km storm-relative helicity
- 100 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
What forecasters said that day
The local office's own words before this severe thunderstorm warning went out, 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 this severe thunderstorm warning went out at Jul 29, 2:53 PM MDT, 2 hours 52 minutes earlier.
Area forecast discussion, Jul 29, 2:53 PM MDT, 2 hours 52 minutes before
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Special weather statement, Jul 29, 1:35 PM MDT, 4 hours 10 minutes before
Special Weather Statement National Weather Service Cheyenne WY 135 PM MDT Fri Jul 29 2022 NEZ002-095-292000- Dawes NE-North Sioux NE- 135 PM MDT Fri Jul 29 2022 ...A strong thunderstorm will impact portions of northwestern Dawes and northeastern Sioux Counties through 200 PM MDT... At 135 PM MDT, Doppler radar was tracking a strong thunderstorm 8 miles east of Montrose, or 29 miles west of Chadron. This storm was nearly stationary. HAZARD...Nickel size hail. SOURCE...Radar indicated. IMPACT...Minor damage to outdoor objects is possible. This storm will remain over mainly rural areas of northwestern Dawes and northeastern Sioux Counties. PRECAUTIONARY/PREPAREDNESS ACTIONS... Torrential rainfall is also occurring with this storm and may lead to localized flooding. Do not drive your vehicle through flooded roadways. This storm may intensify, so be certain to monitor local radio stations and available television stations for additional information and possible warnings from the National Weather Service. && LAT...LON 4281 10343 4282 10369 4300 10369 4300 10343 TIME...MOT...LOC 1935Z 272DEG 4KT 4290 10357 MAX HAIL SIZE...0.88 IN MAX WIND GUST...<30 MPH Hammer
Special weather statement, Jul 29, 3:15 PM MDT, 2 hours 30 minutes before
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</html>The office that day
Everything else NWS Cheyenne, WY issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 28, 6:16 PM MDT | Areal Flood Advisory | CYS | Albany, Converse | 119 min |
| Jul 28, 6:33 PM MDT | Special Weather Statement | CYS | Albany | 42 min |
| Jul 28, 6:38 PM MDT | Severe Thunderstorm Warning | CYS | Albany, Carbon | 52 min |
| Jul 28, 7:20 PM MDT | Severe Thunderstorm Warning | CYS | Albany | 55 min |
| Jul 28, 7:48 PM MDT | Flash Flood Warning | CYS | Albany, Carbon | 3 hr |
| Jul 29, 5:32 PM MDT | Special Weather Statement | CYS | Niobrara | 43 min |
| Jul 29, 5:42 PM MDT | Areal Flood Advisory | CYS | Goshen, Niobrara | 3 hr |
| Jul 29, 1:59 PM MDT | Flash Flood Warning | CYS | Dawes, Sioux | 3 hr |
| Jul 29, 2:10 PM MDT | Severe Thunderstorm Warning | CYS | Sioux | 50 min |
| Jul 29, 3:15 PM MDT | Special Weather Statement | CYS | Sioux | 45 min |
| Jul 29, 3:43 PM MDT | Areal Flood Advisory | CYS | Sioux | 3 hr |
| Jul 28, 8:19 PM MDT | Special Weather Statement | CYS | Jackson | 41 min |
Nearby
Severe Thunderstorm Warnings in Wyoming, 2022Every severe thunderstorm warning in 2022
Sources
The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.