Alert archive / Wyoming / Severe Thunderstorm Warnings in 2023

Severe Thunderstorm Warning 373, NWS Cheyenne, WY

August 27, 2023Albany County, Wyoming

NWS Cheyenne, WY issued this severe thunderstorm warning at Aug 27, 2023, 3:55 PM MDT for Albany County, Wyoming. It was in force for 39 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: Aug 27, 2023, 3:55 PM MDT (21:55 UTC)
Expired: Aug 27, 2023, 4:34 PM MDT
In force: 39 min
Issued by: NWS Cheyenne, WY
Area: Storm-based polygon
Hail: 1.5 in
Wind: 60.0 mph

County Albany County, WY

The radar

The Cheyenne radar (KCYS), 95 km from the middle of the area, began a volume at 21:55 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

Grand Junction, CO (KGJT), launched 12:00Z, 9.9 hours before the alert went out and 366 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-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

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: 21 J/kg
Mixed-layer CIN: -241 J/kg
Mixed-layer LCL: 1815 m above ground
0-6 km bulk shear: 16 kt
0-1 km storm-relative helicity: 43 m²/s²
0-3 km storm-relative helicity: 62 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The office that day

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

Issued	Product	Office	Counties	Lasted
Aug 27, 11:38 AM MDT	Special Weather Statement	CYS	Platte	37 min
Aug 27, 12:08 PM MDT	Severe Thunderstorm Warning	CYS	Albany, Platte	37 min
Aug 27, 2:15 PM MDT	Special Weather Statement	CYS	Albany	30 min
Aug 27, 2:45 PM MDT	Special Weather Statement	CYS	Albany	30 min
Aug 27, 2:57 PM MDT	Special Weather Statement	CYS	Albany	48 min
Aug 27, 3:50 PM MDT	Special Weather Statement	CYS		40 min
Aug 27, 4:21 PM MDT	Severe Thunderstorm Warning	CYS	Converse	24 min
Aug 27, 4:33 PM MDT	Special Weather Statement	CYS		57 min
Aug 27, 5:32 PM MDT	Special Weather Statement	CYS	Converse	43 min
Aug 27, 4:37 PM MDT	Special Weather Statement	CYS	Kimball	23 min

Nearby

Severe Thunderstorm Warnings in Wyoming, 2023 Every severe thunderstorm warning in 2023

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.