Alert archive / Nebraska / Severe Thunderstorm Warnings in 2026

Severe Thunderstorm Warning 263, NWS Hastings, NE

August 18, 2026Fillmore County, York County, Nebraska

NWS Hastings, NE issued this severe thunderstorm warning at Aug 18, 2026, 1:45 AM CDT for Fillmore County, York County, Nebraska. It was in force for 30 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 18, 2026, 1:45 AM CDT (06:45 UTC)
Expired
Aug 18, 2026, 2:15 AM CDT
In force
30 min
Issued by
NWS Hastings, NE
Area
Storm-based polygon
Hail
0.75 in
Wind
60.0 mph

Counties Fillmore County, NE, York County, NE

The radar

The Grand Island radar (KUEX), 83 km from the middle of the area, began a volume at 06:47 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
Aug 17, 8:32 PM CDTSevere Thunderstorm WatchSPC7 hr

The nearest sounding before it

N. Platte/Lee Bi, NE (KLBF), launched 00:00Z, 6.8 hours before the alert went out and 257 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, N. Platte/Lee Bi, NE at 00:00Z on 2026-08-18Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 2080 joules per kilogram.LCLEL10008507005003002001001 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, N. Platte/Lee Bi, NE at 00:00Z on 2026-08-18The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -13 square meters per square second.19395878Sfc1 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
2080 J/kg
Mixed-layer CIN
-5 J/kg
Mixed-layer LCL
2076 m above ground
0-6 km bulk shear
33 kt
0-1 km storm-relative helicity
-13 m²/s²
0-3 km storm-relative helicity
116 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 Hastings, NE wrote its last area forecast discussion before this severe thunderstorm warning went out at Aug 18, 12:46 AM CDT, 59 minutes earlier.

Area forecast discussion, Aug 18, 12:46 AM CDT, 59 minutes before
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Hazardous weather outlook, Aug 17, 8:15 PM CDT, 5 hours 30 minutes before
Hazardous Weather Outlook
National Weather Service Hastings NE
815 PM CDT Mon Aug 17 2026

KSZ005>007-017>019-NEZ039>041-046>049-060>064-072>077-082>087-
181200-
Phillips-Smith-Jewell-Rooks-Osborne-Mitchell-Valley-Greeley-Nance-
Sherman-Howard-Merrick-Polk-Dawson-Buffalo-Hall-Hamilton-York-
Gosper-Phelps-Kearney-Adams-Clay-Fillmore-Furnas-Harlan-Franklin-
Webster-Nuckolls-Thayer-
815 PM CDT Mon Aug 17 2026

This Hazardous Weather Outlook is for south central Nebraska and
portions of north central Kansas.

.DAY ONE...Tonight.

Scattered thunderstorms are expected to arrive from the north and
northwest this evening into tonight. Some of these may be severe
with hail to the size of ping pong balls and wind gusts over 60
MPH. This threat is primarily in south-central Nebraska, and most
of Kansas is expected to remain dry through tonight. The main
timeframe for severe weather is through 2am.

.DAYS TWO THROUGH SEVEN...Tuesday through Sunday.

A few isolated storms are possible on Tuesday afternoon through
Tuesday night, although many areas will remain dry. If storms
develop, a few could become severe with wind gusts to 60 MPH and
hail to the size of ping pong balls.

Heat index values may also reach 100 degrees in southern parts of
Rooks, Osborne and Mitchell Counties Tuesday afternoon.

Another round of thunderstorms is expected Wednesday into
Wednesday evening, and a few of these could become strong to
severe.

Off and on chances for thunderstorms continue Thursday through
Sunday.

&&

More information may be obtained at the following web page:
   https://www.weather.gov/hastings

In the hours before

Local storm report, Aug 18, 1:04 AM CDT, 41 minutes before
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Local storm report, Aug 18, 1:06 AM CDT, 39 minutes before
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Local storm report, Aug 18, 1:08 AM CDT, 37 minutes before
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Local storm report, Aug 18, 1:10 AM CDT, 35 minutes before
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Local storm report, Aug 18, 1:43 AM CDT, 2 minutes before
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Local storm report, Aug 18, 1:44 AM CDT, 1 minute before
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The office that day

Everything else NWS Hastings, NE issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Aug 17, 7:52 PM CDTSevere Thunderstorm WarningGIDGreeley, Valley38 min
Aug 17, 8:24 PM CDTSevere Thunderstorm Warning Considerable damage threatGIDGreeley, Valley51 min
Aug 17, 8:47 PM CDTTornado WarningGIDGreeley, Valley28 min
Aug 17, 9:07 PM CDTTornado WarningGIDGreeley, Valley19 min
Aug 17, 9:10 PM CDTSpecial Weather StatementGIDDawson50 min
Aug 17, 9:24 PM CDTSevere Thunderstorm Warning Considerable damage threatGIDGreeley, Howard, Sherman, Valley51 min
Aug 17, 9:27 PM CDTAreal Flood AdvisoryGIDValley81 min
Aug 17, 10:11 PM CDTSpecial Weather StatementGIDHoward34 min
Aug 17, 10:30 PM CDTSpecial Weather StatementGIDGreeley, Nance30 min
Aug 17, 10:59 PM CDTSevere Thunderstorm WarningGIDGreeley16 min
Aug 17, 11:38 PM CDTSpecial Weather StatementGIDGreeley, Valley52 min
Aug 18, 12:08 AM CDTSevere Thunderstorm WarningGIDGreeley, Howard, Sherman, Valley52 min
Aug 18, 12:32 AM CDTSevere Thunderstorm WarningGIDBuffalo, Hall, Hamilton, Howard, Merrick, Nance and 1 more43 min
Aug 18, 1:06 AM CDTSevere Thunderstorm Warning Considerable damage threatGIDAdams, Clay, Fillmore, Hall, Hamilton, Merrick and 1 more39 min
Aug 18, 1:25 AM CDTSevere Thunderstorm WarningGIDPolk, York35 min
Aug 18, 2:55 AM CDTSpecial Weather StatementGIDYork50 min
Aug 18, 4:15 AM CDTAreal Flood AdvisoryGIDGreeley, Valley4 hr
Aug 18, 5:19 AM CDTAreal Flood AdvisoryGIDHoward, Merrick, Nance3 hr
Aug 18, 7:12 AM CDTAreal Flood WarningGIDGreeley, Howard, Nance, Valley10 hr
Aug 18, 5:06 PM CDTAreal Flood WarningGIDGreeley, Valley16 hr

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.