Alert archive / Nebraska / Severe Thunderstorm Warnings in 2026

Severe Thunderstorm Warning 176, NWS Cheyenne, WY

June 28, 2026Box Butte County, Dawes County, Sioux County, Nebraska

NWS Cheyenne, WY issued this severe thunderstorm warning at Jun 28, 2026, 11:20 PM MDT for Box Butte County, Dawes County, Sioux 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
Jun 28, 2026, 11:20 PM MDT (05:20 UTC)
Expired
Jun 29, 2026, 12:00 AM MDT
In force
40 min
Issued by
NWS Cheyenne, WY
Area
Storm-based polygon
Hail
1.5 in
Wind
60.0 mph

Counties Box Butte County, NE, Dawes County, NE, Sioux County, NE

The radar

The Rapid City radar (KUDX), 188 km from the middle of the area, began a volume at 05:25 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, 5.3 hours before the alert went out and 181 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 00:00Z on 2026-06-29Temperature 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 00:00Z on 2026-06-29The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 53 square meters per square second.1939587897117Sfc1 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
3486 m above ground
0-6 km bulk shear
78 kt
0-1 km storm-relative helicity
53 m²/s²
0-3 km storm-relative helicity
121 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

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 Jun 28, 5:25 PM MDT, 5 hours 55 minutes earlier.

Area forecast discussion, Jun 28, 5:25 PM MDT, 5 hours 55 minutes before
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In the hours before

Special weather statement, Jun 28, 10:27 PM MDT, 53 minutes before
Special Weather Statement
National Weather Service Cheyenne WY
1027 PM MDT Sun Jun 28 2026

NEZ096-WYZ108-290500-
South Sioux NE-Goshen County WY-
1027 PM MDT Sun Jun 28 2026

...A STRONG THUNDERSTORM WILL IMPACT SOUTHWESTERN SIOUX AND EAST
CENTRAL GOSHEN COUNTIES THROUGH 1100 PM MDT...

At 1027 PM MDT, Doppler radar was tracking a strong thunderstorm 9
miles northeast of Henry, or 11 miles east of Torrington, moving
north at 30 mph.

HAZARD...Wind gusts up to 50 mph and half inch hail.

SOURCE...Radar indicated.

IMPACT...Gusty winds could knock down tree limbs and blow around
         unsecured objects. Minor hail damage to vegetation is
         possible.

Locations impacted include...
Agate Fossil Beds National Monument.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

If outdoors, consider seeking shelter inside a building.

&&

LAT...LON 4205 10381 4202 10405 4242 10414 4242 10373
TIME...MOT...LOC 0427Z 170DEG 27KT 4212 10395

MAX HAIL SIZE...0.50 IN
MAX WIND GUST...50 MPH

Zawislak
Special weather statement, Jun 28, 11:02 PM MDT, 18 minutes before
Special Weather Statement
National Weather Service Cheyenne WY
1102 PM MDT Sun Jun 28 2026

NEZ002-003-095-096-290545-
Box Butte NE-Dawes NE-North Sioux NE-South Sioux NE-
1102 PM MDT Sun Jun 28 2026

...A STRONG THUNDERSTORM WILL IMPACT NORTHWESTERN BOX BUTTE...
SOUTHWESTERN DAWES AND SOUTHEASTERN SIOUX COUNTIES THROUGH 1145 PM
MDT...

At 1102 PM MDT, Doppler radar was tracking a strong thunderstorm near
Agate Fossil Beds National Monument, or 28 miles northeast of
Torrington, moving northeast at 40 mph.

HAZARD...Wind gusts up to 50 mph and penny size hail.

SOURCE...Radar indicated.

IMPACT...Gusty winds could knock down tree limbs and blow around
         unsecured objects. Minor hail damage to vegetation is
         possible.

Locations impacted include...
Crawford, Soldier Creek Campground, Agate Fossil Beds National
Monument, Fort Robinson State Park, Belmont, and the south fork burn
scar.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Torrential rainfall is also occurring with this storm and may lead to
localized flooding. Do not drive your vehicle through flooded
roadways.

This storm may intensify, so be certain to monitor local radio
stations and available television stations for additional information
and possible warnings from the National Weather Service.

&&

LAT...LON 4220 10371 4231 10389 4276 10351 4257 10308
TIME...MOT...LOC 0502Z 219DEG 36KT 4232 10374

MAX HAIL SIZE...0.75 IN
MAX WIND GUST...50 MPH

Trudel

The office that day

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

IssuedProductOfficeCountiesLasted
Jun 29, 12:02 AM MDTSevere Thunderstorm WarningCYSGoshen, Niobrara43 min
Jun 29, 3:22 AM MDTRed Flag WarningCYSAlbany, Converse, Goshen, Laramie, Niobrara, Platte18 hr
Jun 29, 12:39 PM MDTHigh Wind WarningCYSAlbany, Carbon, Laramie, Platte5 hr
Jun 29, 1:18 PM MDTFire Weather WatchCYSConverse, Goshen, Niobrara, Platte11 hr
Jun 28, 10:27 PM MDTSpecial Weather StatementCYSSioux33 min
Jun 28, 11:02 PM MDTSpecial Weather StatementCYSSioux43 min
Jun 28, 11:55 PM MDTSpecial Weather StatementCYSSioux50 min
Jun 28, 11:58 PM MDTSevere Thunderstorm Warning Considerable damage threatCYSDawes47 min
Jun 29, 12:44 AM MDTSpecial Weather StatementCYSDawes46 min
Jun 29, 1:08 AM MDTSevere Thunderstorm WarningCYSDawes37 min

Nearby

Severe Thunderstorm Warnings in Nebraska, 2026Every severe thunderstorm warning in 2026

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.