Alert archive / Kansas / Flash Flood Warnings in 2026

Flash Flood Warning 21, NWS Topeka, KS

June 9, 20264 counties in Kansas

NWS Topeka, KS issued this flash flood warning at Jun 9, 2026, 12:14 AM CDT for 4 counties in Kansas. It was in force for 6 hr. No storm report in the archive falls inside the area while it was in force.

The area

The outline as issued.

The facts

Issued
Jun 9, 2026, 12:14 AM CDT (05:14 UTC)
Expired
Jun 9, 2026, 6:31 AM CDT
In force
6 hr
Issued by
NWS Topeka, KS
Area
Storm-based polygon
Flood severity
None

Counties Pottawatomie County, KS, Riley County, KS, Shawnee County, KS, Wabaunsee County, KS

The radar

The Topeka radar (KTWX), 25 km from the middle of the area, began a volume at 05:16 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 00:00Z, 5.2 hours before the alert went out and 67 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 2026-06-09Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 2597 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 2026-06-09The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 46 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
2597 J/kg
Mixed-layer CIN
-19 J/kg
Mixed-layer LCL
661 m above ground
0-6 km bulk shear
26 kt
0-1 km storm-relative helicity
46 m²/s²
0-3 km storm-relative helicity
52 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.2

Open this sounding in Storm Lab

The text

As transmitted.

322 
WGUS53 KTOP 090514
FFWTOP
KSC149-161-177-197-090915-
/O.NEW.KTOP.FF.W.0021.260609T0514Z-260609T0915Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
Flash Flood Warning
National Weather Service Topeka KS
1214 AM CDT Tue Jun 9 2026

The National Weather Service in Topeka has issued a

* Flash Flood Warning for...
  West Central Shawnee County in east central Kansas...
  Northern Wabaunsee County in east central Kansas...
  Southern Pottawatomie County in northeastern Kansas...
  Southeastern Riley County in northeastern Kansas...

* Until 415 AM CDT.

* At 1213 AM CDT, emergency management reported thunderstorms 
  producing heavy rain across the warned area. Between 2 and 3.5 
  inches of rain have fallen. Additional rainfall amounts of 1 to 2 
  inches are possible in the warned area. Flash flooding is already 
  occurring in Wamego as reported by the emergency manager.

  HAZARD...Flash flooding caused by thunderstorms.

  SOURCE...Emergency management.

  IMPACT...Flash flooding of small creeks and streams, urban
           areas, highways, streets and underpasses as well as
           other poor drainage and low-lying areas.

* Some locations that will experience flash flooding include...
  Wamego, Rossville, St. Marys, St. George, Maple Hill, McFarland, 
  Paxico, Belvue, Louisville and Willard.

This includes Interstate 70 between mile markers 316 and 350.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Turn around, don't drown when encountering flooded roads. Most flood 
deaths occur in vehicles.

Be especially cautious at night when it is harder to recognize the 
dangers of flooding.

Be aware of your surroundings and do not drive on flooded roads.

Please report observed flooding to local emergency services or law 
enforcement and request they pass this information to the National 
Weather Service when you can do so safely.

&&

LAT...LON 3926 9665 3932 9651 3930 9633 3926 9609
      3919 9600 3904 9585 3904 9617 3905 9650
      3907 9650 3922 9649 3924 9651 3926 9663

FLASH FLOOD...OBSERVED

$$

101
2 follow-up statements
136 
WGUS53 KTOP 090859 RRG
FFWTOP
KSC149-161-177-197-091200-
/O.EXT.KTOP.FF.W.0021.000000T0000Z-260609T1200Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
Flash Flood Warning
National Weather Service Topeka KS
359 AM CDT Tue Jun 9 2026

The National Weather Service in Topeka has extended the

* Flash Flood Warning for...
  West Central Shawnee County in east central Kansas...
  Northern Wabaunsee County in east central Kansas...
  Southern Pottawatomie County in northeastern Kansas...
  Southeastern Riley County in northeastern Kansas...

* Until 700 AM CDT.

* At 358 AM CDT, emergency management reported thunderstorms 
  producing heavy rain across the warned area. Between 2 and 3.5 
  inches of rain have fallen. Additional rainfall amounts of 1 to 2 
  inches are possible in the warned area. Flash flooding is already 
  occurring.

  HAZARD...Flash flooding caused by thunderstorms.

  SOURCE...Emergency management reported.

  IMPACT...Flash flooding of small creeks and streams, urban
           areas, highways, streets and underpasses as well as
           other poor drainage and low-lying areas.

* Some locations that will experience flash flooding include...
  Wamego, Rossville, St. Marys, St. George, Maple Hill, McFarland, 
  Paxico, Belvue, Louisville and Willard.

This includes Interstate 70 between mile markers 316 and 350.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Turn around, don't drown when encountering flooded roads. Most flood 
deaths occur in vehicles.

Be especially cautious at night when it is harder to recognize the 
dangers of flooding.

Be aware of your surroundings and do not drive on flooded roads.

Please report observed flooding to local emergency services or law 
enforcement and request they pass this information to the National 
Weather Service when you can do so safely.

&&

LAT...LON 3926 9665 3932 9651 3930 9633 3926 9609
      3919 9600 3904 9585 3904 9617 3905 9650
      3907 9650 3922 9649 3924 9651 3926 9663

FLASH FLOOD...OBSERVED

$$

101
462 
WGUS73 KTOP 091131 RRG
FFSTOP

Flash Flood Statement
National Weather Service Topeka KS
631 AM CDT Tue Jun 9 2026

KSC149-161-177-197-091141-
/O.CAN.KTOP.FF.W.0021.000000T0000Z-260609T1200Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Pottawatomie KS-Riley KS-Shawnee KS-Wabaunsee KS-
631 AM CDT Tue Jun 9 2026

...FLASH FLOOD WARNING IS CANCELLED FOR WEST CENTRAL SHAWNEE, 
NORTHERN WABAUNSEE, SOUTHERN POTTAWATOMIE AND SOUTHEASTERN RILEY 
COUNTIES...

This Warning has been replaced by an Areal Flood Warning Please 
continue to heed remaining road closures.

A Flood Watch remains in effect until 700 AM CDT for portions of 
central, east central, north central, and northeast Kansas.

&&

LAT...LON 3926 9665 3932 9651 3930 9633 3926 9609
      3919 9600 3904 9585 3904 9617 3905 9650
      3907 9650 3922 9649 3924 9651 3926 9663

$$

101

The office that day

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

IssuedProductOfficeCountiesLasted
Jun 8, 8:15 PM CDTSevere Thunderstorm WarningTOPCloud, Ottawa60 min
Jun 8, 8:41 PM CDTSevere Thunderstorm WarningTOPDickinson, Ottawa49 min
Jun 8, 8:55 PM CDTTornado WarningTOPDickinson50 min
Jun 8, 9:03 PM CDTSevere Thunderstorm Warning Considerable damage threatTOPDickinson57 min
Jun 8, 9:14 PM CDTSevere Thunderstorm Warning Considerable damage threatTOPClay, Cloud, Dickinson, Ottawa46 min
Jun 8, 9:23 PM CDTSevere Thunderstorm Warning Considerable damage threatTOPDickinson40 min
Jun 8, 9:28 PM CDTSevere Thunderstorm Warning Destructive damage threatTOPDickinson47 min
Jun 8, 9:30 PM CDTTornado WarningTOPDickinson26 min
Jun 8, 9:53 PM CDTSevere Thunderstorm Warning Considerable damage threatTOPClay, Dickinson, Geary, Riley52 min
Jun 8, 9:54 PM CDTFlash Flood WarningTOPDickinson, Ottawa9 hr
Jun 8, 9:57 PM CDTAreal Flood AdvisoryTOPClay, Dickinson, Ottawa5 hr
Jun 8, 10:05 PM CDTSevere Thunderstorm Warning Considerable damage threatTOPDickinson, Morris55 min
Jun 8, 10:13 PM CDTSevere Thunderstorm Warning Considerable damage threatTOPGeary, Pottawatomie, Riley, Wabaunsee47 min
Jun 8, 10:23 PM CDTSevere Thunderstorm Warning Considerable damage threatTOPGeary, Morris, Wabaunsee67 min
Jun 8, 10:41 PM CDTTornado WarningTOPMorris20 min
Jun 8, 10:55 PM CDTSevere Thunderstorm Warning Considerable damage threatTOPJackson, Pottawatomie, Shawnee, Wabaunsee66 min
Jun 8, 10:55 PM CDTSevere Thunderstorm Warning Considerable damage threatTOPCoffey, Lyon, Morris, Osage, Shawnee, Wabaunsee65 min
Jun 8, 10:57 PM CDTFlash Flood WarningTOPClay, Dickinson, Geary, Pottawatomie, Riley8 hr
Jun 8, 11:08 PM CDTAreal Flood AdvisoryTOPDickinson, Morris3 hr
Jun 8, 11:17 PM CDTTornado WarningTOPLyon, Osage28 min
Jun 8, 11:42 PM CDTSevere Thunderstorm WarningTOPAnderson, Coffey, Douglas, Franklin, Jackson, Jefferson and 3 more63 min
Jun 8, 11:51 PM CDTRiver Flood WarningTOPDickinson34 hr
Jun 8, 11:53 PM CDTRiver Flood WarningTOPDickinson, Ottawa, Saline4 days
Jun 8, 11:55 PM CDTRiver Flood WarningTOPDickinson63 hr
Jun 8, 11:56 PM CDTRiver Flood WarningTOPOttawa4 days
Jun 8, 11:59 PM CDTAreal Flood WarningTOPDickinson, Geary, Morris, Wabaunsee33 min
Jun 9, 12:07 AM CDTTornado WarningTOPDouglas, Jefferson, Shawnee23 min
Jun 9, 12:22 AM CDTFlash Flood WarningTOPJackson, Jefferson, Shawnee, Wabaunsee6 hr
Jun 9, 12:27 AM CDTFlash Flood Warning Considerable damage threatTOPOttawa6 hr
Jun 9, 12:32 AM CDTFlash Flood WarningTOPDickinson, Geary, Morris, Wabaunsee6 hr
Jun 9, 12:37 AM CDTRiver Flood WarningTOPRiley10 hr
Jun 9, 12:43 AM CDTSevere Thunderstorm Warning Considerable damage threatTOPAnderson, Coffey, Douglas, Franklin, Jefferson, Osage and 1 more32 min
Jun 9, 12:48 AM CDTFlash Flood WarningTOPDouglas, Jefferson6 hr
Jun 9, 12:53 AM CDTRiver Flood WarningTOPShawnee8 hr
Jun 9, 1:22 AM CDTFlash Flood Warning Considerable damage threatTOPShawnee5 hr
Jun 9, 2:08 AM CDTSpecial Weather StatementTOPCloud37 min
Jun 9, 2:17 AM CDTFlash Flood WarningTOPLyon, Morris, Wabaunsee4 hr
Jun 9, 2:24 AM CDTRiver Flood WarningTOPWabaunsee18 hr
Jun 9, 2:48 AM CDTFlash Flood WarningTOPClay, Dickinson, Ottawa4 hr
Jun 9, 3:12 AM CDTAreal Flood AdvisoryTOPClay, Cloud, Pottawatomie, Riley2 hr
Jun 9, 3:27 AM CDTRiver Flood WarningTOPGeary11 hr
Jun 9, 3:27 AM CDTRiver Flood WarningTOPGeary51 hr
Jun 9, 3:37 AM CDTSpecial Weather StatementTOPRiley23 min
Jun 9, 6:23 AM CDTAreal Flood WarningTOPClay, Dickinson, Geary, Morris, Ottawa, Pottawatomie and 2 more6 hr
Jun 9, 12:01 PM CDTAreal Flood WarningTOPDickinson, Ottawa6 hr

Nearby

Flash Flood Warnings in Kansas, 2026Every flash flood 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.