Alert archive / Kansas / Severe Thunderstorm Warnings in 2026

Severe Thunderstorm Warning 418, NWS Wichita, KS

September 15, 2026Butler County, Sedgwick County, Kansas

NWS Wichita, KS issued this severe thunderstorm warning at Sep 15, 2026, 3:50 PM CDT for Butler County, Sedgwick County, Kansas. It was in force for 25 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
Sep 15, 2026, 3:50 PM CDT (20:50 UTC)
Expired
Sep 15, 2026, 4:15 PM CDT
In force
25 min
Issued by
NWS Wichita, KS
Area
Storm-based polygon
Damage threat
Considerable
Hail
0.75 in
Wind
70.0 mph

Counties Butler County, KS, Sedgwick County, KS

The radar

The Wichita radar (KICT), 27 km from the middle of the area, began a volume at 20:50 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

Topeka, KS (KTOP), launched 12:00Z, 8.8 hours before the alert went out and 193 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, Topeka, KS at 12:00Z on 2026-09-15Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 192 joules per kilogram.LCLLFCEL10008507005003002001001 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, Topeka, KS at 12:00Z on 2026-09-15The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 367 square meters per square second.193958Sfc1 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
192 J/kg
Mixed-layer CIN
-330 J/kg
Mixed-layer LCL
1769 m above ground
0-6 km bulk shear
30 kt
0-1 km storm-relative helicity
367 m²/s²
0-3 km storm-relative helicity
360 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 Wichita, KS wrote its last area forecast discussion before this severe thunderstorm warning went out at Sep 15, 12:49 PM CDT, 3 hours 1 minute earlier.

Area forecast discussion, Sep 15, 12:49 PM CDT, 3 hours 1 minute before
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Hazardous weather outlook, Sep 15, 2:08 PM CDT, 1 hour 42 minutes before
Hazardous Weather Outlook
National Weather Service Wichita KS
208 PM CDT Tue Sep 15 2026

KSZ032-033-047>053-067>072-082-083-091>096-098>100-161915-
Russell-Lincoln-Barton-Ellsworth-Saline-Rice-McPherson-Marion-Chase-
Reno-Harvey-Butler-Greenwood-Woodson-Allen-Kingman-Sedgwick-Harper-
Sumner-Cowley-Elk-Wilson-Neosho-Chautauqua-Montgomery-Labette-
208 PM CDT Tue Sep 15 2026

This hazardous weather outlook is for portions of central Kansas,
east central Kansas, south central Kansas and southeast Kansas.

.DAY ONE...This Afternoon and Tonight

Scattered showers and storms are expected this afternoon while
lingering into the overnight hours. Some storms could be strong to
marginally severe this afternoon and evening, capable of producing
downbursts with wind gusts between 55 and 65 mph, especially across
south central and parts of central Kansas and the Flint Hills.
Additionally, some storms will produce heavy rain, and this may lead
to localized flooding.

Heat indices will hit or exceed 105 across portions of southeast
Kansas this afternoon. See heat advisory for the latest details.

.DAYS TWO THROUGH SEVEN...Wednesday through Monday

Scattered showers and storms could linger across central Kansas
Wednesday morning. Heavy rain and localized flooding cannot be
ruled out.

Periodic chances for showers and storms will return late Saturday
afternoon through Sunday evening.

.SPOTTER INFORMATION STATEMENT...

Spotter activation is not anticipated this afternoon or tonight.

&&

For a graphical version of this information, see our webpage at:
https://www.weather.gov/erh/ghwo?wfo=ict

In the hours before

Local storm report, Sep 15, 2:18 PM CDT, 1 hour 32 minutes before
Preliminary Local Storm Report
National Weather Service Wichita KS
218 PM CDT Tue Sep 15 2026

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0153 PM     Tstm Wnd Gst     Mcconnell Air Force Bas 37.62N 97.26W
09/15/2026  M59 MPH          Sedgwick           KS   ASOS

&&

MWM
Local storm report, Sep 15, 3:00 PM CDT, 50 minutes before
Preliminary Local Storm Report
National Weather Service Wichita KS
300 PM CDT Tue Sep 15 2026

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0242 PM     Tstm Wnd Gst     Mcconnell Air Force Bas 37.62N 97.26W
09/15/2026  M75 MPH          Sedgwick           KS   ASOS

            Measured at McConnell AFB.

&&

ADK

The office that day

Everything else NWS Wichita, KS issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Sep 15, 2:25 AM CDTHeat AdvisoryICTChautauqua, Labette, Montgomery, Neosho17 hr
Sep 15, 2:35 PM CDTSevere Thunderstorm WarningICTButler, Sedgwick25 min
Sep 15, 2:59 PM CDTSevere Thunderstorm WarningICTButler, Sedgwick31 min
Sep 15, 4:02 PM CDTSevere Thunderstorm WarningICTButler, Cowley, Sedgwick, Sumner28 min
Sep 15, 4:13 PM CDTSevere Thunderstorm WarningICTSedgwick, Sumner32 min
Sep 15, 4:32 PM CDTSevere Thunderstorm WarningICTHarper28 min

Nearby

Severe Thunderstorm Warnings in Kansas, 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.