Alert archive / Wyoming / Severe Thunderstorm Warnings in 2024

Severe Thunderstorm Warning 3, NWS Riverton, WY

June 21, 2024Hot Springs County, Washakie County, Wyoming

NWS Riverton, WY issued this severe thunderstorm warning at Jun 21, 2024, 2:08 PM MDT for Hot Springs County, Washakie County, Wyoming. It was in force for 52 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
Jun 21, 2024, 2:08 PM MDT (20:08 UTC)
Expired
Jun 21, 2024, 3:00 PM MDT
In force
52 min
Issued by
NWS Riverton, WY
Area
Storm-based polygon
Tornado
Possible
Hail
1.25 in
Wind
60.0 mph

Counties Hot Springs County, WY, Washakie County, WY

The radar

The Riverton/Lander radar (KRIW), 89 km from the middle of the area, began a volume at 20:07 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 watch it was issued in

The SPC watch in force over the same counties when this warning went out.

IssuedProductOfficeLasted
Jun 21, 1:27 PM MDTSevere Thunderstorm WatchSPC8 hr

The nearest sounding before it

Rapid City, SD (KUNR), launched 12:00Z, 8.1 hours before the alert went out and 416 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.

Skew-T log-pSkew-T log-p diagram, Rapid City, SD at 12:00Z on 2024-06-21Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 joules per kilogram.LCL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Rapid City, SD at 12:00Z on 2024-06-21The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 10 square meters per square second.1939587897Sfc1 km3 km6 km9 kmRMLM
The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.
Mixed-layer CAPE
0 J/kg
Mixed-layer CIN
No buoyant parcel
Mixed-layer LCL
769 m above ground
0-6 km bulk shear
18 kt
0-1 km storm-relative helicity
10 m²/s²
0-3 km storm-relative helicity
14 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The office that day

Everything else NWS Riverton, WY issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Jun 21, 11:59 AM MDTSpecial Weather StatementRIWSweetwater31 min
Jun 21, 1:01 PM MDTSpecial Weather StatementRIWSweetwater29 min
Jun 21, 1:19 PM MDTSpecial Weather StatementRIW26 min
Jun 21, 1:22 PM MDTSpecial Weather StatementRIW38 min
Jun 21, 1:39 PM MDTSpecial Weather StatementRIWSweetwater36 min
Jun 21, 1:54 PM MDTSpecial Weather StatementRIWHot Springs51 min
Jun 21, 2:15 PM MDTSpecial Weather StatementRIW30 min
Jun 21, 3:00 PM MDTSpecial Weather StatementRIWFremont45 min
Jun 21, 3:00 PM MDTSpecial Weather StatementRIWHot Springs30 min
Jun 21, 3:01 PM MDTSpecial Weather StatementRIWHot Springs44 min
Jun 21, 3:12 PM MDTSpecial Weather StatementRIWFremont33 min
Jun 21, 3:16 PM MDTSpecial Weather StatementRIWFremont44 min
Jun 21, 3:29 PM MDTSpecial Weather StatementRIWNatrona31 min
Jun 21, 3:48 PM MDTSpecial Weather StatementRIW42 min
Jun 21, 3:51 PM MDTSpecial Weather StatementRIWWashakie39 min
Jun 21, 4:13 PM MDTSpecial Weather StatementRIWJohnson32 min
Jun 21, 4:27 PM MDTSpecial Weather StatementRIWNatrona33 min
Jun 21, 4:31 PM MDTSpecial Weather StatementRIWJohnson29 min
Jun 21, 5:59 PM MDTSpecial Weather StatementRIWJohnson31 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.