Alert archive / Kansas / Flash Flood Warnings in 2025

Flash Flood Warning 21, NWS Topeka, KS

June 23, 2025Geary County, Riley County, Kansas

NWS Topeka, KS issued this flash flood warning at Jun 23, 2025, 6:04 PM CDT for Geary County, Riley County, Kansas. It was in force for 3 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 23, 2025, 6:04 PM CDT (23:04 UTC)
Expired: Jun 23, 2025, 8:55 PM CDT
In force: 3 hr
Issued by: NWS Topeka, KS
Area: Storm-based polygon
Flood severity: None

Counties Geary County, KS, Riley County, KS

The radar

The Topeka radar (KTWX), 41 km from the middle of the area, began a volume at 23:03 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, 11.1 hours before the alert went out and 90 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-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

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: 796 J/kg
Mixed-layer CIN: -213 J/kg
Mixed-layer LCL: 1115 m above ground
0-6 km bulk shear: 11 kt
0-1 km storm-relative helicity: 250 m²/s²
0-3 km storm-relative helicity: 262 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted.

375 
WGUS53 KTOP 232304
FFWTOP
KSC061-161-240500-
/O.NEW.KTOP.FF.W.0021.250623T2304Z-250624T0500Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
Flash Flood Warning
National Weather Service Topeka KS
604 PM CDT Mon Jun 23 2025

The National Weather Service in Topeka has issued a

* Flash Flood Warning for...
  Northwestern Geary County in east central Kansas...
  Southwestern Riley County in northeastern Kansas...

* Until midnight CDT tonight.

* At 603 PM CDT, Doppler radar indicated thunderstorms producing 
  heavy rain across the warned area. Between 2.5 and 4 inches of 
  rain have fallen. The expected rainfall rate is 1 to 2 inches in 1 
  hour. Additional rainfall amounts of 1 to 2 inches are possible in 
  the warned area. Flash flooding is ongoing or expected to begin 
  shortly.

  HAZARD...Flash flooding caused by thunderstorms.

  SOURCE...Radar.

  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...
  Manhattan, Junction City, Ogden, Grandview Plaza, Milford, Keats 
  and Milford Lake.

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.

&&

LAT...LON 3927 9662 3925 9659 3925 9657 3924 9659
      3923 9658 3924 9656 3921 9655 3921 9654
      3920 9652 3920 9656 3918 9656 3919 9652
      3910 9652 3906 9668 3897 9693 3897 9694
      3900 9696 3918 9696 3928 9671

FLASH FLOOD...RADAR INDICATED
EXPECTED RAINFALL RATE...1-2 INCHES IN 1 HOUR

$$

Jones

1 follow-up statement

688 
WGUS73 KTOP 240155
FFSTOP

Flash Flood Statement
National Weather Service Topeka KS
855 PM CDT Mon Jun 23 2025

KSC061-161-240205-
/O.CAN.KTOP.FF.W.0021.000000T0000Z-250624T0500Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Geary KS-Riley KS-
855 PM CDT Mon Jun 23 2025

...FLASH FLOOD WARNING IS CANCELLED FOR NORTHWESTERN GEARY AND 
SOUTHWESTERN RILEY COUNTIES...

Flood waters have receded. The heavy rain has ended. Flash flooding 
is no longer expected to pose a threat. Please continue to heed 
remaining road closures.

&&

LAT...LON 3927 9662 3925 9659 3925 9657 3924 9659
      3923 9658 3924 9656 3921 9655 3921 9654
      3920 9652 3920 9656 3918 9656 3919 9652
      3910 9652 3906 9668 3897 9693 3897 9694
      3900 9696 3918 9696 3928 9671

$$

Jones

The office that day

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

Issued	Product	Office	Counties	Lasted
Jun 23, 3:21 PM CDT	Special Weather Statement	TOP	Republic	9 min
Jun 23, 3:47 PM CDT	Special Weather Statement	TOP	Geary	28 min
Jun 23, 4:14 PM CDT	Special Weather Statement	TOP	Riley	46 min
Jun 23, 4:17 PM CDT	Special Weather Statement	TOP	Republic	43 min
Jun 23, 4:51 PM CDT	Special Weather Statement	TOP	Geary	24 min
Jun 23, 4:55 PM CDT	Severe Thunderstorm Warning	TOP	Geary, Pottawatomie, Riley, Wabaunsee	35 min
Jun 23, 5:10 PM CDT	Areal Flood Advisory	TOP	Geary, Riley	3 hr
Jun 23, 5:23 PM CDT	Special Weather Statement	TOP	Marshall	37 min
Jun 23, 5:33 PM CDT	Special Weather Statement	TOP	Dickinson	42 min
Jun 23, 5:37 PM CDT	Special Weather Statement	TOP	Wabaunsee	38 min
Jun 23, 6:01 PM CDT	Severe Thunderstorm Warning	TOP	Wabaunsee	14 min

Nearby

Flash Flood Warnings in Kansas, 2025 Every flash flood warning in 2025

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.