Alert archive / Kansas / Severe Thunderstorm Warnings in 2026

Severe Thunderstorm Warning 199, NWS Topeka, KS

May 18, 20265 counties in Kansas

NWS Topeka, KS issued this severe thunderstorm warning at May 18, 2026, 12:23 AM CDT for 5 counties in Kansas. It was in force for 37 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 18, 2026, 12:23 AM CDT (05:23 UTC)
Expired
May 18, 2026, 1:00 AM CDT
In force
37 min
Issued by
NWS Topeka, KS
Area
Storm-based polygon
Hail
0.75 in
Wind
60.0 mph

Counties Clay County, KS, Dickinson County, KS, Geary County, KS, Morris County, KS, Riley County, KS

The radar

The Topeka radar (KTWX), 57 km from the middle of the area, began a volume at 05:27 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.

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 17, 5:57 PM CDT, 6 hours 26 minutes earlier.

Area forecast discussion, May 17, 5:57 PM CDT, 6 hours 26 minutes before
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Hazardous weather outlook, May 17, 3:26 PM CDT, 8 hours 57 minutes before
Hazardous Weather Outlook
National Weather Service Topeka KS
326 PM CDT Sun May 17 2026

KSZ008>012-020>024-026-034>040-054>056-058-059-182030-
Republic-Washington-Marshall-Nemaha-Brown-Cloud-Clay-Riley-
Pottawatomie-Jackson-Jefferson-Ottawa-Dickinson-Geary-Morris-
Wabaunsee-Shawnee-Douglas-Lyon-Osage-Franklin-Coffey-Anderson-
326 PM CDT Sun May 17 2026

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

.DAY ONE...This Afternoon and Tonight

Gusty south winds from 20 to 30 mph with gusts up to 45 mph
through early evening.

Scattered severe storms are possible after 5 PM across north central
Kansas. These storms may form into a line as they move east southeast
this evening. Very large hail, damaging wind gusts, and a few
tornadoes are the main hazards. Localized flooding is also a
concern if storms train over areas that received heavy rain the
previous evening.

A Flood Watch remains in effect from 7 PM this evening through 7
AM Tuesday morning for areas along and north of I-70. Widespread
rainfall totals of 2-4 inches are expected with locally higher
amounts could lead to flooding.

.DAYS TWO THROUGH SEVEN...Monday through Saturday

Gusty south winds return across the Flint Hills Monday morning and
afternoon with sustained winds of 20-30 mph and gusts upwards of
45 mph into the early evening. A Wind Advisory remains in effect
for Dickinson, Morris, Lyon, Geary and Wabaunsee counties from 9
AM to 9 PM Monday.

The greatest chance for severe weather is still shaping up to be
Monday afternoon and Monday night. There is good confidence in
storms developing over north central KS by the early evening and
move across all of northeast and east-central Kansas through the
night. Storms will be capable of producing tornadoes, very large
hail, damaging winds and flash flooding. People should be prepared
for thunderstorms impacting the area.

A Flood Watch remains in effect from 7 PM this evening through 7
AM Tuesday morning for areas along and north of I-70. Widespread
rainfall totals of 2-4 inches are expected with locally higher
amounts could lead to flooding.

.SPOTTER INFORMATION STATEMENT...

Spotter activation will not be needed.

In the hours before

Local storm report, May 17, 9:31 PM CDT, 2 hours 52 minutes before
Preliminary Local Storm Report
National Weather Service Topeka KS
931 PM CDT Sun May 17 2026

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

0929 PM     Hail             Tescott                 39.01N 97.88W
05/17/2026  M1.75 Inch       Ottawa             KS   Trained Spotter

&&

ng
Local storm report, May 17, 9:38 PM CDT, 2 hours 45 minutes before
Preliminary Local Storm Report
National Weather Service Topeka KS
938 PM CDT Sun May 17 2026

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

0935 PM     Hail             4 NE Minneapolis        39.16N 97.67W
05/17/2026  M1.00 Inch       Ottawa             KS   Public

&&

ng
Local storm report, May 17, 9:58 PM CDT, 2 hours 25 minutes before
Preliminary Local Storm Report
National Weather Service Topeka KS
958 PM CDT Sun May 17 2026

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

0948 PM     Flash Flood      1 WSW Minneapolis       39.12N 97.72W
05/17/2026                   Ottawa             KS   Emergency Mngr

            6-8 inches of water flowing over roads that
            typically flood with heavy rains.

&&

ng
Special weather statement, May 17, 10:25 PM CDT, 1 hour 58 minutes before
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Local storm report, May 17, 10:30 PM CDT, 1 hour 53 minutes before
Preliminary Local Storm Report
National Weather Service Topeka KS
1030 PM CDT Sun May 17 2026

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

0930 PM     Hail             Tescott                 39.01N 97.88W
05/17/2026  M2.00 Inch       Ottawa             KS   Trained Spotter

            Delayed report. Relayed via photos.

&&

JP
Special weather statement, May 17, 10:30 PM CDT, 1 hour 53 minutes before
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The office that day

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

IssuedProductOfficeCountiesLasted
May 17, 7:11 PM CDTSevere Thunderstorm WarningTOPWashington19 min
May 17, 7:30 PM CDTSevere Thunderstorm Warning Considerable damage threatTOPOttawa45 min
May 17, 7:35 PM CDTSevere Thunderstorm WarningTOPWashington40 min
May 17, 7:35 PM CDTSevere Thunderstorm WarningTOPCloud25 min
May 17, 7:38 PM CDTTornado WarningTOPOttawa26 min
May 17, 7:51 PM CDTSevere Thunderstorm WarningTOPCloud, Republic24 min
May 17, 8:03 PM CDTSevere Thunderstorm Warning Considerable damage threatTOPCloud, Ottawa42 min
May 17, 8:05 PM CDTSevere Thunderstorm WarningTOPMarshall, Washington40 min
May 17, 8:10 PM CDTSevere Thunderstorm Warning Considerable damage threatTOPCloud, Republic, Washington35 min
May 17, 8:16 PM CDTSevere Thunderstorm Warning Considerable damage threatTOPOttawa44 min
May 17, 8:16 PM CDTTornado WarningTOPMarshall, Washington29 min
May 17, 8:29 PM CDTSevere Thunderstorm WarningTOPClay, Cloud, Riley, Washington46 min
May 17, 8:41 PM CDTSevere Thunderstorm WarningTOPMarshall, Washington34 min
May 17, 8:56 PM CDTSevere Thunderstorm WarningTOPMarshall, Washington34 min
May 17, 8:57 PM CDTSevere Thunderstorm Warning Considerable damage threatTOPOttawa48 min
May 17, 9:10 PM CDTSevere Thunderstorm WarningTOPMarshall, Washington35 min
May 17, 9:16 PM CDTSevere Thunderstorm WarningTOPClay, Riley29 min
May 17, 9:26 PM CDTSevere Thunderstorm WarningTOPMarshall34 min
May 17, 9:40 PM CDTAreal Flood AdvisoryTOPOttawa99 min
May 17, 9:41 PM CDTSevere Thunderstorm Warning Considerable damage threatTOPClay, Dickinson, Ottawa34 min
May 17, 9:46 PM CDTSevere Thunderstorm WarningTOPMarshall, Nemaha44 min
May 17, 10:13 PM CDTSevere Thunderstorm WarningTOPOttawa18 min
May 17, 10:25 PM CDTSpecial Weather StatementTOPBrown, Nemaha65 min
May 17, 10:30 PM CDTSpecial Weather StatementTOPClay30 min
May 17, 10:56 PM CDTSevere Thunderstorm WarningTOPBrown, Jackson, Nemaha32 min
May 17, 11:19 PM CDTFlash Flood WarningTOPOttawa3 hr
May 17, 11:37 PM CDTSevere Thunderstorm WarningTOPOttawa38 min
May 18, 12:06 AM CDTSevere Thunderstorm WarningTOPDickinson, Ottawa24 min
May 18, 2:37 AM CDTAreal Flood AdvisoryTOPOttawa4 hr
May 18, 4:47 AM CDTRiver Flood WarningTOPOttawa5 hr
May 18, 1:08 PM CDTSevere Thunderstorm WarningTOPCloud, Republic67 min
May 18, 2:02 PM CDTSevere Thunderstorm WarningTOPCloud, Republic, Washington58 min
May 18, 2:05 PM CDTSevere Thunderstorm Warning Considerable damage threatTOPOttawa55 min
May 18, 2:17 PM CDTTornado WarningTOPOttawa43 min
May 18, 2:21 PM CDTTornado WarningTOPCloud, Republic, Washington39 min
May 18, 2:28 PM CDTTornado WarningTOPWashington32 min
May 18, 2:50 PM CDTTornado WarningTOPCloud, Ottawa40 min
May 18, 2:55 PM CDTTornado WarningTOPRepublic, Washington38 min
May 18, 3:08 PM CDTFlash Flood WarningTOPWashington4 hr
May 18, 3:10 PM CDTSevere Thunderstorm WarningTOPCloud, Ottawa35 min
May 18, 3:22 PM CDTTornado WarningTOPClay, Cloud, Washington21 min
May 18, 3:40 PM CDTSevere Thunderstorm WarningTOPClay, Cloud, Ottawa35 min
May 18, 3:42 PM CDTSevere Thunderstorm WarningTOPClay, Cloud, Washington33 min
May 18, 4:02 PM CDTTornado WarningTOPWashington29 min
May 18, 4:04 PM CDTTornado WarningTOPClay, Cloud, Ottawa56 min
May 18, 4:10 PM CDTSevere Thunderstorm WarningTOPClay, Dickinson, Ottawa35 min
May 18, 4:13 PM CDTSevere Thunderstorm WarningTOPMarshall, Nemaha17 min
May 18, 4:28 PM CDTSevere Thunderstorm WarningTOPRepublic32 min
May 18, 4:30 PM CDTTornado WarningTOPClay, Marshall, Riley, Washington45 min
May 18, 4:33 PM CDTTornado WarningTOPClay, Dickinson, Ottawa42 min
May 18, 5:07 PM CDTTornado Warning Tornado observedTOPMarshall, Washington53 min
May 18, 5:11 PM CDTSevere Thunderstorm WarningTOPClay, Dickinson, Geary, Ottawa, Riley49 min
May 18, 5:11 PM CDTTornado WarningTOPClay, Riley, Washington12 min
May 18, 5:15 PM CDTTornado WarningTOPClay, Geary, Riley30 min
May 18, 5:40 PM CDTAreal Flood AdvisoryTOPClay, Marshall, Washington3 hr
May 18, 5:42 PM CDTTornado WarningTOPClay, Pottawatomie, Riley27 min
May 18, 5:43 PM CDTAreal Flood AdvisoryTOPClay3 hr
May 18, 5:51 PM CDTTornado Warning Tornado observedTOPMarshall, Nemaha54 min
May 18, 5:54 PM CDTSevere Thunderstorm WarningTOPClay, Dickinson, Geary, Morris, Riley36 min
May 18, 6:09 PM CDTAreal Flood AdvisoryTOPMarshall3 hr
May 18, 6:21 PM CDTSevere Thunderstorm Warning Considerable damage threatTOPDickinson, Geary, Morris, Pottawatomie, Riley, Wabaunsee24 min
May 18, 6:31 PM CDTSevere Thunderstorm WarningTOPNemaha44 min
May 18, 6:42 PM CDTSevere Thunderstorm Warning Considerable damage threatTOPGeary, Jackson, Nemaha, Pottawatomie, Riley, Shawnee and 1 more48 min
May 18, 6:46 PM CDTAreal Flood AdvisoryTOPGeary, Pottawatomie, Riley3 hr
May 18, 6:49 PM CDTTornado WarningTOPBrown, Nemaha26 min
May 18, 6:52 PM CDTSevere Thunderstorm Warning Destructive damage threatTOPJackson, Pottawatomie, Shawnee, Wabaunsee23 min
May 18, 6:54 PM CDTSevere Thunderstorm Warning Considerable damage threatTOPBrown, Jackson, Nemaha, Pottawatomie36 min
May 18, 6:59 PM CDTSevere Thunderstorm WarningTOPDickinson, Geary, Morris, Wabaunsee46 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; radar from the NEXRAD Level II archive.