Alert archive / Kansas / Flash Flood Warnings in 2026
Flash Flood Warning 13, NWS Topeka, KS
NWS Topeka, KS issued this flash flood warning at Jun 4, 2026, 6:05 PM CDT for Clay County, Pottawatomie County, Riley County, Kansas. It was in force for 4 hr. 3 reports came from inside the area while it was in force.
The area
The outline as issued, with what was reported inside it.
The facts
- Issued
- Jun 4, 2026, 6:05 PM CDT (23:05 UTC)
- Expired
- Jun 4, 2026, 10:15 PM CDT
- In force
- 4 hr
- Issued by
- NWS Topeka, KS
- Area
- Storm-based polygon
- Flood severity
- None
Counties Clay County, KS, Pottawatomie County, KS, Riley County, KS
The radar
The Topeka radar (KTWX), 64 km from the middle of the area, began a volume at 23:04 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 was reported inside it
| Time | Report | Where | Remark |
|---|---|---|---|
| Jun 4, 7:03 PM CDT | FLASH FLOOD | 2 Se Leonardville, KS | Falcon Road closed from Barton Road to Madison Road. |
| Jun 4, 7:24 PM CDT | FLASH FLOOD | 1 Nnw Randolph, KS | Highway 77 closed north of Randolph due to flooding. |
| Jun 4, 7:57 PM CDT | FLASH FLOOD | Olsburg, KS | Reports from the EM of numerous roads under water. |
Local storm reports filed while the alert was in force, from inside its polygon or its counties.
The nearest sounding before it
Topeka, KS (KTOP), launched 12:00Z, 11.1 hours before the alert went out and 109 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.
- Mixed-layer CAPE
- 140 J/kg
- Mixed-layer CIN
- -55 J/kg
- Mixed-layer LCL
- 917 m above ground
- 0-6 km bulk shear
- 19 kt
- 0-1 km storm-relative helicity
- 40 m²/s²
- 0-3 km storm-relative helicity
- 55 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
583
WGUS53 KTOP 042305
FFWTOP
KSC027-149-161-050315-
/O.NEW.KTOP.FF.W.0013.260604T2305Z-260605T0315Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
BULLETIN - EAS ACTIVATION REQUESTED
Flash Flood Warning
National Weather Service Topeka KS
605 PM CDT Thu Jun 4 2026
The National Weather Service in Topeka has issued a
* Flash Flood Warning for...
Southeastern Clay County in north central Kansas...
West Central Pottawatomie County in northeastern Kansas...
Northwestern Riley County in northeastern Kansas...
* Until 1015 PM CDT.
* At 604 PM CDT, Doppler radar indicated thunderstorms producing
heavy rain across the warned area. Between 1.5 and 3.5 inches of
rain have fallen. The expected rainfall rate is 2 to 3 inches in 1
hour. Additional rainfall amounts of 1 to 3 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...
Wakefield, Riley, Leonardville, Olsburg, Randolph and Tuttle Creek
Lake.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Turn around, don't drown when encountering flooded roads. Most flood
deaths occur in vehicles.
&&
LAT...LON 3946 9691 3945 9672 3943 9650 3929 9672
3923 9683 3922 9707
FLASH FLOOD...RADAR INDICATED
EXPECTED RAINFALL RATE...2-3 INCHES IN 1 HOUR
$$
CP1 follow-up statement
799
WGUS73 KTOP 050155
FFSTOP
Flash Flood Statement
National Weather Service Topeka KS
855 PM CDT Thu Jun 4 2026
KSC027-149-161-050315-
/O.CON.KTOP.FF.W.0013.000000T0000Z-260605T0315Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Clay KS-Pottawatomie KS-Riley KS-
855 PM CDT Thu Jun 4 2026
...FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 1015 PM CDT THIS
EVENING FOR SOUTHEASTERN CLAY, WEST CENTRAL POTTAWATOMIE AND
NORTHWESTERN RILEY COUNTIES...
At 854 PM CDT, Doppler radar indicated thunderstorms producing heavy
rain across the warned area. Between 1.5 and 3.5 inches of rain have
fallen. The expected rainfall rate is 2 to 3 inches in 1 hour.
Additional rainfall amounts of 1 to 3 inches are possible in the
warned area. Flash flooding is ongoing or expected to begin shortly.
HAZARD...Flash flooding caused by thunderstorms.
SOURCE...Radar.
IMPACT...Flash flooding of small creeks and streams, urban areas,
highways, streets and underpasses as well as other poor
drainage and low-lying areas.
Some locations that will experience flash flooding include...
Wakefield, Riley, Leonardville, Olsburg, Randolph and Tuttle Creek
Lake.
Riley County and Pottawatomie County emergency management officials
report closed roads in portions of these counties.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Turn around, don't drown when encountering flooded roads. Most flood
deaths occur in vehicles.
&&
LAT...LON 3946 9691 3945 9672 3943 9650 3929 9672
3923 9683 3922 9707
FLASH FLOOD...RADAR INDICATED
EXPECTED RAINFALL RATE...2-3 INCHES IN 1 HOUR
$$The office that day
Everything else NWS Topeka, KS issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 3, 9:04 PM CDT | Areal Flood Advisory | TOP | Cloud, Ottawa | 3 hr |
| Jun 3, 10:03 PM CDT | Areal Flood Advisory | TOP | Cloud, Ottawa | 6 hr |
| Jun 4, 12:55 AM CDT | River Flood Warning | TOP | Ottawa | 4 days |
| Jun 4, 3:45 AM CDT | Flood Watch | TOP | Brown, Clay, Cloud, Jackson, Marshall, Nemaha and 5 more | 24 hr |
| Jun 4, 9:23 AM CDT | River Flood Warning | TOP | Ottawa | 20 hr |
| Jun 4, 9:23 AM CDT | River Flood Warning | TOP | Marshall | 69 hr |
| Jun 4, 9:23 AM CDT | River Flood Warning | TOP | Dickinson, Ottawa, Saline | 32 hr |
| Jun 4, 9:23 AM CDT | River Flood Warning | TOP | Clay | 12 hr |
| Jun 4, 9:23 AM CDT | River Flood Warning | TOP | Ottawa, Saline | 12 hr |
| Jun 4, 12:31 PM CDT | Special Weather Statement | TOP | Washington | 29 min |
| Jun 4, 12:38 PM CDT | Areal Flood Advisory | TOP | Republic | 3 hr |
| Jun 4, 3:34 PM CDT | Special Weather Statement | TOP | Wabaunsee | 26 min |
| Jun 4, 3:52 PM CDT | Special Weather Statement | TOP | Jackson | 23 min |
| Jun 4, 3:56 PM CDT | Special Weather Statement | TOP | Nemaha | 34 min |
| Jun 4, 4:04 PM CDT | Special Weather Statement | TOP | Clay | 26 min |
| Jun 4, 4:07 PM CDT | Severe Thunderstorm Warning | TOP | Brown, Jackson, Nemaha | 38 min |
| Jun 4, 4:23 PM CDT | Severe Thunderstorm Warning | TOP | Clay, Marshall, Riley, Washington | 37 min |
| Jun 4, 4:29 PM CDT | Severe Thunderstorm Warning | TOP | Brown | 28 min |
| Jun 4, 4:40 PM CDT | Severe Thunderstorm Warning | TOP | Marshall | 35 min |
| Jun 4, 5:16 PM CDT | Special Weather Statement | TOP | Riley | 29 min |
| Jun 4, 5:20 PM CDT | Tornado Warning | TOP | Pottawatomie, Riley | 10 min |
| Jun 4, 5:35 PM CDT | Special Weather Statement | TOP | Pottawatomie | 25 min |
| Jun 4, 5:47 PM CDT | Areal Flood Advisory | TOP | Clay, Marshall, Pottawatomie, Riley, Washington | 3 hr |
| Jun 4, 6:47 PM CDT | Areal Flood Advisory | TOP | Marshall, Nemaha, Pottawatomie | 3 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; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.