Alert archive / Nebraska / Severe Thunderstorm Warnings in 2025

Severe Thunderstorm Warning 248, NWS Cheyenne, WY

July 19, 2025Morrill County, Nebraska

NWS Cheyenne, WY issued this severe thunderstorm warning at Jul 19, 2025, 12:07 AM MDT for Morrill County, Nebraska. It was in force for 40 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 19, 2025, 12:07 AM MDT (06:07 UTC)
Expired: Jul 19, 2025, 12:47 AM MDT
In force: 40 min
Issued by: NWS Cheyenne, WY
Area: Storm-based polygon
Hail: 1.0 in
Wind: 60.0 mph

County Morrill County, NE

The radar

The Cheyenne radar (KCYS), 162 km from the middle of the area, began a volume at 06:10 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 00:00Z, 6.1 hours before the alert went out and 262 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: 366 J/kg
Mixed-layer CIN: -169 J/kg
Mixed-layer LCL: 1832 m above ground
0-6 km bulk shear: 37 kt
0-1 km storm-relative helicity: 23 m²/s²
0-3 km storm-relative helicity: 162 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.9

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 18, 11:56 PM MDT, 11 minutes earlier.

Area forecast discussion, Jul 18, 11:56 PM MDT, 11 minutes before

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Hazardous weather outlook, Jul 18, 2:41 PM MDT, 9 hours 26 minutes before

Hazardous Weather Outlook
National Weather Service Cheyenne WY
241 PM MDT Fri Jul 18 2025

NEZ002-003-019>021-054-055-095-096-WYZ101>119-192045-
Dawes County-Box Butte County-Scotts Bluff County-Banner County-
Morrill County-Kimball County-Cheyenne County-
Northern Sioux County-Southern Sioux County-
Converse County Lower Elevations-Niobrara County-
North Laramie Range-Ferris/Seminoe/Shirley Mountains-
Shirley Basin-Central Laramie Range and Southwest Platte County-
East Platte County-Goshen County-Central Carbon County-
North Snowy Range Foothills-Southwest Carbon County-
Sierra Madre Range-Upper North Platte River Basin-Snowy Range-
Laramie Valley-South Laramie Range-South Laramie Range Foothills-
Central Laramie County-East Laramie County-
241 PM MDT Fri Jul 18 2025

This hazardous weather outlook is for portions of panhandle
Nebraska...east central Wyoming...south central Wyoming and
southeast Wyoming.

.DAY ONE...THIS AFTERNOON AND TONIGHT

Scattered thunderstorms will move eastward in the Wyoming high
plains as well as the Nebraska panhandle. Isolated pea to penny
sized hail and gusty winds to near 60 mph are the primary threats
through 8pm. Please report any severe weather to the NWS.

.DAYS TWO THROUGH SEVEN...SATURDAY THROUGH THURSDAY

A better chance of thunderstorms will exist on Saturday with
storms moving eastward in the Wyoming high plains as well as the
Nebraska panhandle. Hail up to quarter size and gusty winds to
near 60 mph are the primary threats through 9pm, mainly in the
Nebraska panhandle.

.Spotter information statement...
Please report any severe weather to the NWS.

In the hours before

Local storm report, Jul 18, 8:37 PM MDT, 3 hours 30 minutes before

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Special weather statement, Jul 18, 8:44 PM MDT, 3 hours 23 minutes before

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Special weather statement, Jul 18, 9:11 PM MDT, 2 hours 56 minutes before

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Local storm report, Jul 18, 9:53 PM MDT, 2 hours 14 minutes before

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Local storm report, Jul 18, 10:00 PM MDT, 2 hours 7 minutes before

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Local storm report, Jul 18, 10:04 PM MDT, 2 hours 3 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 18, 6:01 PM MDT	Special Weather Statement	CYS	Goshen	44 min
Jul 18, 6:06 PM MDT	Severe Thunderstorm Warning	CYS	Converse, Niobrara	39 min
Jul 18, 6:13 PM MDT	Severe Thunderstorm Warning	CYS	Goshen	32 min
Jul 18, 6:45 PM MDT	Special Weather Statement	CYS	Niobrara	45 min
Jul 18, 7:09 PM MDT	Special Weather Statement	CYS	Niobrara	36 min
Jul 18, 7:18 PM MDT	Areal Flood Advisory	CYS	Goshen	3 hr
Jul 18, 7:22 PM MDT	Severe Thunderstorm Warning Considerable damage threat	CYS	Goshen	23 min
Jul 18, 7:24 PM MDT	Severe Thunderstorm Warning Considerable damage threat	CYS	Niobrara	51 min
Jul 18, 8:11 PM MDT	Special Weather Statement	CYS	Converse	49 min
Jul 18, 8:44 PM MDT	Special Weather Statement	CYS	Niobrara	46 min
Jul 18, 9:11 PM MDT	Special Weather Statement	CYS	Niobrara	34 min
Jul 18, 6:57 PM MDT	Special Weather Statement	CYS	Scotts Bluff	33 min
Jul 18, 7:42 PM MDT	Severe Thunderstorm Warning	CYS	Scotts Bluff	33 min
Jul 18, 7:59 PM MDT	Tornado Warning	CYS	Scotts Bluff	18 min
Jul 18, 8:14 PM MDT	Severe Thunderstorm Warning	CYS	Banner, Morrill, Scotts Bluff	26 min
Jul 18, 11:26 PM MDT	Severe Thunderstorm Warning	CYS	Banner, Morrill	49 min

Nearby

Severe Thunderstorm Warnings in Nebraska, 2025 Every severe thunderstorm warning in 2025

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.