Alert archive / Kansas / Severe Thunderstorm Warnings in 2026

Severe Thunderstorm Warning 153, NWS Topeka, KS

May 5, 2026Coffey County, Lyon County, Osage County, Kansas

NWS Topeka, KS issued this severe thunderstorm warning at May 5, 2026, 12:49 AM CDT for Coffey County, Lyon County, Osage County, Kansas. It was in force for 26 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
May 5, 2026, 12:49 AM CDT (05:49 UTC)
Expired
May 5, 2026, 1:15 AM CDT
In force
26 min
Issued by
NWS Topeka, KS
Area
Storm-based polygon
Hail
0.75 in
Wind
60.0 mph

Counties Coffey County, KS, Lyon County, KS, Osage County, KS

The nearest sounding before it

Topeka, KS (KTOP), launched 00:00Z, 5.8 hours before the alert went out and 65 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 00:00Z on 2026-05-05Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 478 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 00:00Z on 2026-05-05The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 26 square meters per square second.1939587897Sfc1 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
478 J/kg
Mixed-layer CIN
-139 J/kg
Mixed-layer LCL
2528 m above ground
0-6 km bulk shear
37 kt
0-1 km storm-relative helicity
26 m²/s²
0-3 km storm-relative helicity
34 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 Topeka, KS wrote its last area forecast discussion before this severe thunderstorm warning went out at May 5, 12:28 AM CDT, 21 minutes earlier.

Area forecast discussion, May 5, 12:28 AM CDT, 21 minutes before
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Hazardous weather outlook, May 4, 12:47 PM CDT, 12 hours 2 minutes before
Hazardous Weather Outlook
National Weather Service Topeka KS
1247 PM CDT Mon May 4 2026

KSZ008>012-020>024-026-034>040-054>056-058-059-051800-
Republic-Washington-Marshall-Nemaha-Brown-Cloud-Clay-Riley-
Pottawatomie-Jackson-Jefferson-Ottawa-Dickinson-Geary-Morris-
Wabaunsee-Shawnee-Douglas-Lyon-Osage-Franklin-Coffey-Anderson-
1247 PM CDT Mon May 4 2026

This Hazardous Weather Outlook is for central Kansas, east central
Kansas, north central Kansas and northeast Kansas.

.DAY ONE...This afternoon and tonight.

Storm chances increase this evening. A few storms could become
severe with mainly a large hail with damaging wind threat.

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

The probability for widespread hazardous weather is low.

.SPOTTER MESSAGE

Weather spotters are encouraged to relay reports of hail, damaging
wind, tornadoes and flooding.

&&

More detailed information can be found at:
www.weather.gov/media/top/DssPacket.pdf

In the hours before

Special weather statement, May 4, 11:01 PM CDT, 1 hour 48 minutes before
Special Weather Statement
National Weather Service Topeka KS
1101 PM CDT Mon May 4 2026

KSZ036>038-050430-
Wabaunsee-Geary-Morris-
1101 PM CDT Mon May 4 2026

...A STRONG THUNDERSTORM WILL IMPACT SOUTHEASTERN GEARY...
NORTHEASTERN MORRIS AND SOUTHWESTERN WABAUNSEE COUNTIES THROUGH 1130
PM CDT...

At 1101 PM CDT, Doppler radar was tracking a strong thunderstorm near
Parkerville, moving northeast at 25 mph.

HAZARD...Wind gusts up to 40 mph and nickel size hail.

SOURCE...Radar indicated.

IMPACT...Gusty winds could knock down twigs or small limbs and blow
         around objects. Hail damage to outdoor objects and
         vegetation is possible.

Locations impacted include...
White City, Alta Vista, Dwight, and Parkerville.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

If outdoors, consider seeking shelter inside a building.

&&

LAT...LON 3866 9668 3886 9681 3899 9648 3876 9638
TIME...MOT...LOC 0401Z 243DEG 21KT 3879 9668

MAX HAIL SIZE...0.88 IN
MAX WIND GUST...40 MPH

ST
Special weather statement, May 4, 11:30 PM CDT, 1 hour 19 minutes before
Special Weather Statement
National Weather Service Topeka KS
1130 PM CDT Mon May 4 2026

KSZ037-038-054-050500-
Wabaunsee-Lyon-Morris-
1130 PM CDT Mon May 4 2026

...A STRONG THUNDERSTORM WILL IMPACT NORTHEASTERN MORRIS...
SOUTHWESTERN WABAUNSEE AND NORTHWESTERN LYON COUNTIES THROUGH
MIDNIGHT CDT...

At 1130 PM CDT, Doppler radar was tracking a strong thunderstorm 6
miles south of Alta Vista, moving east at 20 mph.

HAZARD...Wind gusts up to 40 mph and pea size hail.

SOURCE...Radar indicated.

IMPACT...Gusty winds could knock down twigs or small limbs and blow
         around objects. Minor damage to vegetation is possible.

Locations impacted include...
Alta Vista and Council Grove Lake.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

If outdoors, consider seeking shelter inside a building.

&&

LAT...LON 3868 9655 3886 9656 3892 9622 3866 9619
TIME...MOT...LOC 0430Z 267DEG 19KT 3878 9646

MAX HAIL SIZE...0.25 IN
MAX WIND GUST...40 MPH

Griesemer
Special weather statement, May 4, 11:50 PM CDT, 59 minutes before
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Special weather statement, May 5, 12:08 AM CDT, 41 minutes before
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Special weather statement, May 5, 12:37 AM CDT, 12 minutes before
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The office that day

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

IssuedProductOfficeCountiesLasted
May 4, 11:01 PM CDTSpecial Weather StatementTOPMorris29 min
May 4, 11:30 PM CDTSpecial Weather StatementTOPWabaunsee30 min
May 4, 11:50 PM CDTSpecial Weather StatementTOPLyon25 min
May 5, 12:08 AM CDTSpecial Weather StatementTOPLyon37 min
May 5, 12:37 AM CDTSpecial Weather StatementTOPCoffey, Osage23 min
May 5, 1:09 AM CDTSpecial Weather StatementTOPAnderson, Coffey36 min
May 5, 2:44 AM CDTSpecial Weather StatementTOPLyon31 min
May 5, 3:13 AM CDTSpecial Weather StatementTOPLyon32 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.