Alert archive / Nebraska / Severe Thunderstorm Warnings in 2023

Severe Thunderstorm Warning 313, NWS Cheyenne, WY

July 24, 2023Dawes County, Sioux County, Nebraska

NWS Cheyenne, WY issued this severe thunderstorm warning at Jul 24, 2023, 10:10 PM MDT for Dawes County, Sioux County, Nebraska. It was in force for 50 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 24, 2023, 10:10 PM MDT (04:10 UTC)
Expired: Jul 24, 2023, 11:00 PM MDT
In force: 50 min
Issued by: NWS Cheyenne, WY
Area: Storm-based polygon
Hail: 1.25 in
Wind: 60.0 mph

Counties Dawes County, NE, Sioux County, NE

The radar

The Rapid City radar (KUDX), 176 km from the middle of the area, began a volume at 04:13 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 00:00Z, 4.2 hours before the alert went out and 407 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: 229 J/kg
Mixed-layer CIN: -202 J/kg
Mixed-layer LCL: 2658 m above ground
0-6 km bulk shear: 36 kt
0-1 km storm-relative helicity: -8 m²/s²
0-3 km storm-relative helicity: 144 m²/s²
Significant tornado parameter: 0.0
Supercell composite: -0.1

Open this sounding in Storm Lab

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 24, 9:22 PM MDT, 48 minutes earlier.

Area forecast discussion, Jul 24, 9:22 PM MDT, 48 minutes before

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In the hours before

Special weather statement, Jul 24, 7:32 PM MDT, 2 hours 38 minutes before

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Special weather statement, Jul 24, 7:40 PM MDT, 2 hours 30 minutes before

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Special weather statement, Jul 24, 8:01 PM MDT, 2 hours 9 minutes before

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Special weather statement, Jul 24, 8:50 PM MDT, 1 hour 20 minutes before

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      <h1 id="headline">This service is currently unavailable.</h1>
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Special weather statement, Jul 24, 9:47 PM MDT, 23 minutes before

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The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 24, 7:32 PM MDT	Special Weather Statement	CYS	Converse	43 min
Jul 24, 7:40 PM MDT	Special Weather Statement	CYS	Platte	50 min
Jul 24, 7:44 PM MDT	Severe Thunderstorm Warning	CYS	Goshen, Niobrara, Platte	46 min
Jul 24, 8:01 PM MDT	Special Weather Statement	CYS	Converse	44 min
Jul 24, 8:50 PM MDT	Special Weather Statement	CYS	Niobrara	25 min
Jul 24, 9:47 PM MDT	Special Weather Statement	CYS	Sioux	43 min
Jul 24, 10:30 PM MDT	Special Weather Statement	CYS	Dawes	30 min
Jul 24, 11:00 PM MDT	Special Weather Statement	CYS	Dawes	30 min

Nearby

Severe Thunderstorm Warnings in Nebraska, 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.