Alert archive / Wyoming / Severe Thunderstorm Warnings in 2024
Severe Thunderstorm Warning 7, NWS Riverton, WY
NWS Riverton, WY issued this severe thunderstorm warning at Jul 1, 2024, 2:17 PM MDT for Hot Springs County, Park County, Washakie County, Wyoming. It was in force for 43 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 1, 2024, 2:17 PM MDT (20:17 UTC)
- Expired
- Jul 1, 2024, 3:00 PM MDT
- In force
- 43 min
- Issued by
- NWS Riverton, WY
- Area
- Storm-based polygon
- Hail
- 1.0 in
- Wind
- 50.0 mph
Counties Hot Springs County, WY, Park County, WY, Washakie County, WY
The radar
The Riverton/Lander radar (KRIW), 109 km from the middle of the area, began a volume at 20:18 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
Riverton, WY (KRIW), launched 12:00Z, 8.3 hours before the alert went out and 110 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
- 318 J/kg
- Mixed-layer CIN
- -275 J/kg
- Mixed-layer LCL
- 1572 m above ground
- 0-6 km bulk shear
- 67 kt
- 0-1 km storm-relative helicity
- 141 m²/s²
- 0-3 km storm-relative helicity
- 306 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.6
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 Riverton, WY wrote its last area forecast discussion before this severe thunderstorm warning went out at Jul 1, 1:52 PM MDT, 25 minutes earlier.
Area forecast discussion, Jul 1, 1:52 PM MDT, 25 minutes before
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</html>Hazardous weather outlook, Jul 1, 1:46 PM MDT, 31 minutes before
Hazardous Weather Outlook National Weather Service Riverton WY 146 PM MDT Mon Jul 1 2024 WYZ001>020-022>030-030000- Yellowstone National Park-Absaroka Mountains-Cody Foothills- North Bighorn Basin-Southwest Bighorn Basin-Southeast Bighorn Basin- Owl Creek and Bridger Mountains-Bighorn Mountains West- Bighorn Mountains Southeast-Northeast Johnson County- Southeast Johnson County-Teton and Gros Ventre Mountains- Jackson Hole-Wind River Mountains West-Wind River Mountains East- Upper Wind River Basin-Wind River Basin-Lander Foothills- Green Mountains and Rattlesnake Range- Natrona County Lower Elevations-Casper Mountain-Star Valley- Salt River and Wyoming Ranges-Upper Green River Basin Foothills- Upper Green River Basin-South Lincoln County- Rock Springs and Green River-Flaming Gorge-East Sweetwater County- 146 PM MDT Mon Jul 1 2024 This Hazardous Weather Outlook is for Western and Central Wyoming. .DAY ONE...This afternoon and tonight. Strong to severe storms are possible, mainly for the Bighorn Basin and Johnson County. Strong sudden wind gusts, large hail, and frequent lightning are the main threats with these storms. .DAYS TWO THROUGH SEVEN...Tuesday through Sunday. Tuesday through Thursday...Shower and thunderstorm chances, mainly for northern Wyoming, continue through midweek. Warm, dry, and breezy conditions across south-central and southwest Wyoming through the week will create critical fire weather conditions where the fuels are cured. .SPOTTER INFORMATION STATEMENT... Weather spotters are encouraged to report significant weather conditions according to Standard Operating Procedures.
In the hours before
Special weather statement, Jul 1, 9:40 AM MDT, 4 hours 37 minutes before
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</html>The office that day
Everything else NWS Riverton, WY issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 1, 7:35 AM MDT | Special Weather Statement | RIW | Big Horn | 25 min |
| Jul 1, 9:40 AM MDT | Special Weather Statement | RIW | Big Horn | 20 min |
| Jul 1, 2:11 PM MDT | Special Weather Statement | RIW | Hot Springs | 34 min |
| Jul 1, 2:37 PM MDT | Special Weather Statement | RIW | Big Horn | 23 min |
| Jul 1, 2:43 PM MDT | Special Weather Statement | RIW | Hot Springs | 32 min |
| Jul 1, 3:00 PM MDT | Special Weather Statement | RIW | Big Horn | 30 min |
| Jul 1, 3:00 PM MDT | Severe Thunderstorm Warning | RIW | Hot Springs, Washakie | 45 min |
| Jul 1, 3:34 PM MDT | Special Weather Statement | RIW | Johnson | 26 min |
| Jul 1, 3:41 PM MDT | Severe Thunderstorm Warning | RIW | Hot Springs, Washakie | 49 min |
| Jul 1, 3:59 PM MDT | Special Weather Statement | RIW | Sheridan | 46 min |
| Jul 1, 4:25 PM MDT | Severe Thunderstorm Warning | RIW | Johnson, Washakie | 35 min |
| Jul 1, 5:04 PM MDT | Special Weather Statement | RIW | Johnson | 26 min |
| Jul 1, 5:26 PM MDT | Severe Thunderstorm Warning | RIW | Natrona | 49 min |
| Jul 1, 5:35 PM MDT | Special Weather Statement | RIW | Johnson | 25 min |
Nearby
Severe Thunderstorm Warnings in Wyoming, 2024Every severe thunderstorm warning in 2024
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.