Alert archive / Kansas / Flash Flood Warnings in 2026

Flash Flood Warning 32, NWS Topeka, KS

June 13, 2026Marshall County, Washington County, Kansas

NWS Topeka, KS issued this flash flood warning at Jun 13, 2026, 5:43 PM CDT for Marshall County, Washington County, Kansas. It was in force for 4 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 13, 2026, 5:43 PM CDT (22:43 UTC)
Expired: Jun 13, 2026, 9:45 PM CDT
In force: 4 hr
Issued by: NWS Topeka, KS
Area: Storm-based polygon
Flood severity: None

Counties Marshall County, KS, Washington County, KS

The radar

The Topeka radar (KTWX), 106 km from the middle of the area, began a volume at 22:44 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.

Did it verify

Not verified. The Iowa Environmental Mesonet's Cow found no qualifying storm report inside this flash flood warning while it was in force. That is not proof nothing happened: reports are thin where few people live.

Cow counts a report within 15 km of the polygon while the warning was in force: a tornado for a tornado warning; hail of 1 inch or more, a gust of 58 mph or more or wind damage for a severe thunderstorm warning; a flash flood report for a flash flood warning.

The text

As transmitted.

020 
WGUS53 KTOP 132243
FFWTOP
KSC117-201-140245-
/O.NEW.KTOP.FF.W.0032.260613T2243Z-260614T0245Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
Flash Flood Warning
National Weather Service Topeka KS
543 PM CDT Sat Jun 13 2026

The National Weather Service in Topeka has issued a

* Flash Flood Warning for...
  East Central Washington County in north central Kansas...
  Northwestern Marshall County in northeastern Kansas...

* Until 945 PM CDT.

* At 543 PM CDT, Doppler radar indicated thunderstorms producing 
  heavy rain across the warned area. Between 2 and 2.5 inches of 
  rain have fallen. Additional rainfall amounts of 2 to 2.5 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...
  Marysville, Hanover and Bremen.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 3995 9687 3995 9651 3974 9650 3974 9688

FLASH FLOOD...RADAR INDICATED

$$

BD

1 follow-up statement

541 
WGUS73 KTOP 140240
FFSTOP

Flash Flood Statement
National Weather Service Topeka KS
940 PM CDT Sat Jun 13 2026

KSC117-201-140250-
/O.EXP.KTOP.FF.W.0032.000000T0000Z-260614T0245Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Marshall KS-Washington KS-
940 PM CDT Sat Jun 13 2026

...FLASH FLOOD WARNING WILL EXPIRE AT 945 PM CDT THIS EVENING FOR 
EAST CENTRAL WASHINGTON AND NORTHWESTERN MARSHALL COUNTIES...

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

&&

LAT...LON 3995 9687 3995 9651 3974 9650 3974 9688

$$

BD

What forecasters said that day

The local office's own words before this flash flood 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 flash flood warning went out at Jun 13, 12:50 PM CDT, 4 hours 53 minutes earlier. Its key messages:

Scattered severe storms remain likely as a cold front tracks southeast late this afternoon and evening across northeast Kansas. Large hail, damaging wind gusts from 70-80 mph, and a few tornadoes are possible with the strongest storms.
Antecedent soil moisture from previous rainfall and forecast rain amounts from 2 to 4 inches are expected to cause areas of localized flash flooding this evening. A Flood Watch remains in effect through Sunday morning over portions of east central Kansas.
Below normal temperatures and relief from the humidity arrives on Sunday-Monday with highs in the 70s and overnight lows in the 50s.
As the moisture returns Wednesday-Thursday, upper air pattern becomes more unsettled as shower and thunderstorm chances return to the region.

Area forecast discussion, Jun 13, 12:50 PM CDT, 4 hours 53 minutes before

Area Forecast Discussion
National Weather Service Topeka KS
1250 PM CDT Sat Jun 13 2026

.KEY MESSAGES...

- Scattered severe storms remain likely as a cold front tracks
southeast late this afternoon and evening across northeast Kansas.
Large hail, damaging wind gusts from 70-80 mph, and a few tornadoes
are possible with the strongest storms.

- Antecedent soil moisture from previous rainfall and forecast rain
amounts from 2 to 4 inches are expected to cause areas of localized
flash flooding this evening.  A Flood Watch remains in effect
through Sunday morning over portions of east central Kansas.

- Below normal temperatures and relief from the humidity arrives on
Sunday-Monday with highs in the 70s and overnight lows in the 50s.

- As the moisture returns Wednesday-Thursday, upper air pattern
becomes more unsettled as shower and thunderstorm chances return to
the region.

&&

.DISCUSSION...
Issued at 1248 PM CDT Sat Jun 13 2026

Mid level water vapor imagery this afternoon exhibits several
embedded vort maxes coming off the CO Rockies ahead of the main
upper trough axis entering the western high plains this evening.
Warm front has lifted through the forecast area where dewpoints have
increased into the low 70s. The morning's MCV over southeast Kansas
has complicated the forecast for this afternoon and evening,
resulting in a delay in richer low level moisture and warmer temps
advecting northward by mid afternoon. In addition, a secondary MCS
over southeast Nebraska has pushed an outflow boundary through
northeast Kansas, providing a potential focus for storm development
as early as 1-2 PM. In terms of the cold front, lack of stronger
convergence and slower timing of the boundary on some of the CAMs
has led to uncertainty in coverage/location of severe storms this
afternoon and evening. Environment in vicinity of the front and just
ahead of remains conducive for severe storms given that MLCAPE
quickly increases above 2500 J/KG between 3-9 PM while effective
shear is adequate at 35-40 kts. Current thinking is for isolated
storm initiation to occur near a remnant outflow boundary as early
as 1 PM, becoming more scattered in coverage between 5-9 PM as the
front progresses southeast. Initially, large hail and damaging wind
gusts are the primary hazards. Sfc winds back slightly to the
southeast by early evening, increasing low level SRH and the
potential for a few tornadoes with any supercells, especially near
any residual boundaries. Further into the evening, brief spin up
tornadoes along the leading edge of the MCS are possible as 0-3 KM
bulk shear vectors increase to around 30 kts with the LLJ.

In terms of flooding, sparser coverage of convection may limit the
widespread threat for flooding. However as storms congeal into a
cluster/line, PWAT values increase above 2 inches while moisture
convergence enhances towards east central Kansas. Rainfall rates of
2-3 inches/hr still seem reasonable, however may be more localized
depending on the coverage of storms. Decided to not make any changes
to the Flood Watch at this time, progged to end by 6 AM Sunday,
perhaps earlier in the morning as storms clear out.

The MCS is expected to exit southeast overnight behind the front, as
a much cooler and drier airmass overspreads the region on Sunday.
Under mostly cloudy skies, highs Sunday will struggle to reach the
middle 70s with north winds around 10 mph. Lows to start the work
week Monday are in the 50s before temps begin to gradually warm back
into the 80s by Tuesday. Longwave upper trough dives into the
Midwest next week, shifting winds to the northwest in the region.
Embedded perturbations coming off the high plains may develop an
overnight MCS Tuesday evening towards central KS. Another front
dropping southward in the Wednesday-Thursday timeframe may also be
the impetus for stronger thunderstorms before high pressure takes
over once again at the end of the work week.

&&

.AVIATION /18Z TAFS THROUGH 18Z SUNDAY/...
Issued at 1216 PM CDT Sat Jun 13 2026

VFR at terminals as focus remains on fropa and timing of storms forming
along the boundary. Latest guidance is slower with the progression of
the front and trends in storm coverage have decreased so overall confidence
is lower than average in impacts at terminals. Have kept the Prob30 mention
at this time for TSRA in the 00-04Z time frame. Additional showers and
isolated thunder may be possible behind the front through 08Z so added
a mention of VCSH. north winds behind the front were also increased with gusts
in upwards of 30 kts.

&&

.TOP WATCHES/WARNINGS/ADVISORIES...
Flood Watch through Sunday morning for KSZ026-KSZ038-KSZ039-KSZ040-
KSZ054-KSZ055-KSZ056-KSZ058-KSZ059.

&&

DISCUSSION...Prieto
AVIATION...Prieto

Hazardous weather outlook, Jun 13, 12:52 PM CDT, 4 hours 51 minutes before

Hazardous Weather Outlook
National Weather Service Topeka KS
1252 PM CDT Sat Jun 13 2026

KSZ008>012-020>024-034>037-141800-
Republic-Washington-Marshall-Nemaha-Brown-Cloud-Clay-Riley-
Pottawatomie-Jackson-Ottawa-Dickinson-Geary-Morris-
1252 PM CDT Sat Jun 13 2026

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

.DAY ONE...This afternoon and tonight.

Severe thunderstorms are possible across the entire area this
afternoon and evening, with the greatest potential in northeast
and east central Kansas. Large hail, damaging winds, and heavy
rainfall that could lead to flooding are the main hazards. A
tornado or two is possible.

.DAYS TWO THROUGH SEVEN...Sunday through Friday.

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

KSZ026-038>040-054>056-058-059-141800-
Jefferson-Wabaunsee-Shawnee-Douglas-Lyon-Osage-Franklin-Coffey-
Anderson-
1252 PM CDT Sat Jun 13 2026

...FLOOD WATCH REMAINS IN EFFECT THROUGH SUNDAY MORNING...

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

.DAY ONE...This afternoon and tonight.

Severe thunderstorms are possible across the entire area this
afternoon and evening, with the greatest potential in northeast
and east central Kansas. Large hail, damaging winds, and heavy
rainfall that could lead to flooding are the main hazards. A
tornado or two is possible. A Flood Watch is in effect for parts
of northeast and east central Kansas.

.DAYS TWO THROUGH SEVEN...Sunday through Friday.

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

Local storm report, Jun 13, 5:18 PM CDT, 25 minutes before

Preliminary Local Storm Report
National Weather Service Topeka KS
518 PM CDT Sat Jun 13 2026

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

0507 PM     Hail             Belleville              39.82N 97.64W
06/13/2026  E1.00 Inch       Republic           KS   Public

&&

Local storm report, Jun 13, 5:27 PM CDT, 16 minutes before

Preliminary Local Storm Report
National Weather Service Topeka KS
527 PM CDT Sat Jun 13 2026

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

0523 PM     Hail             4 SSE Bremen            39.84N 96.76W
06/13/2026  E1.00 Inch       Marshall           KS   Emergency Mngr

&&

CP

Local storm report, Jun 13, 5:34 PM CDT, 9 minutes before

Preliminary Local Storm Report
National Weather Service Topeka KS
534 PM CDT Sat Jun 13 2026

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

0532 PM     Hail             6 WSW Clyde             39.57N 97.52W
06/13/2026  M1.75 Inch       Cloud              KS   Law Enforcement

            Sheriffs office relayed report of golf ball
            size hail on Highway 9 west of Clyde.
            Location estimated from radar.

&&

DR

Local storm report, Jun 13, 5:35 PM CDT, 8 minutes before

Preliminary Local Storm Report
National Weather Service Topeka KS
535 PM CDT Sat Jun 13 2026

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

0533 PM     Hail             1 S Marysville          39.83N 96.65W
06/13/2026  E1.00 Inch       Marshall           KS   Emergency Mngr

            Also 50-60 mph winds.

&&

CP

Local storm report, Jun 13, 5:36 PM CDT, 7 minutes before

Preliminary Local Storm Report
National Weather Service Topeka KS
536 PM CDT Sat Jun 13 2026

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

0533 PM     Tstm Wnd Gst     1 S Marysville          39.83N 96.65W
06/13/2026  E60 MPH          Marshall           KS   Emergency Mngr

            Also with 1 inch hail.

&&

CP

Local storm report, Jun 13, 5:41 PM CDT, 2 minutes before

Preliminary Local Storm Report
National Weather Service Topeka KS
541 PM CDT Sat Jun 13 2026

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

0539 PM     Hail             3 WSW Clyde             39.57N 97.45W
06/13/2026  M2.00 Inch       Cloud              KS   Trained Spotter

            Along Highway 9.

&&

DR

The office that day

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

Issued	Product	Office	Counties	Lasted
Jun 13, 3:51 PM CDT	Severe Thunderstorm Warning	TOP	Republic	39 min
Jun 13, 4:10 PM CDT	Severe Thunderstorm Warning	TOP	Washington	35 min
Jun 13, 4:13 PM CDT	Severe Thunderstorm Warning Considerable damage threat	TOP	Republic	47 min
Jun 13, 4:29 PM CDT	Severe Thunderstorm Warning Considerable damage threat	TOP	Republic	46 min
Jun 13, 4:34 PM CDT	Flash Flood Warning	TOP	Republic	4 hr
Jun 13, 4:40 PM CDT	Severe Thunderstorm Warning Considerable damage threat	TOP	Washington	35 min
Jun 13, 4:55 PM CDT	Severe Thunderstorm Warning Considerable damage threat	TOP	Cloud, Republic, Washington	50 min
Jun 13, 5:01 PM CDT	Severe Thunderstorm Warning	TOP	Marshall, Washington	44 min
Jun 13, 5:07 PM CDT	Severe Thunderstorm Warning	TOP	Marshall, Washington	23 min
Jun 13, 5:20 PM CDT	Tornado Warning	TOP	Marshall, Washington	25 min
Jun 13, 5:21 PM CDT	Severe Thunderstorm Warning	TOP	Clay, Cloud, Republic, Washington	39 min
Jun 13, 5:27 PM CDT	Severe Thunderstorm Warning Considerable damage threat	TOP	Marshall, Republic, Washington	33 min
Jun 13, 5:34 PM CDT	Severe Thunderstorm Warning Considerable damage threat	TOP	Marshall, Nemaha	41 min
Jun 13, 5:39 PM CDT	Severe Thunderstorm Warning	TOP	Brown, Nemaha	36 min
Jun 13, 5:40 PM CDT	Severe Thunderstorm Warning Considerable damage threat	TOP	Clay, Washington	50 min
Jun 13, 5:51 PM CDT	Severe Thunderstorm Warning Considerable damage threat	TOP	Clay, Marshall, Pottawatomie, Riley, Washington	24 min
Jun 13, 6:07 PM CDT	Severe Thunderstorm Warning	TOP	Brown, Nemaha	23 min
Jun 13, 6:09 PM CDT	Severe Thunderstorm Warning Considerable damage threat	TOP	Clay, Geary, Marshall, Pottawatomie, Riley, Washington	51 min
Jun 13, 6:11 PM CDT	Severe Thunderstorm Warning Considerable damage threat	TOP	Jackson, Marshall, Nemaha, Pottawatomie	49 min
Jun 13, 6:25 PM CDT	Tornado Warning	TOP	Pottawatomie, Riley	20 min
Jun 13, 6:28 PM CDT	Tornado Warning	TOP	Pottawatomie, Riley	12 min
Jun 13, 6:36 PM CDT	Severe Thunderstorm Warning	TOP	Brown, Jackson, Nemaha, Pottawatomie	39 min
Jun 13, 6:46 PM CDT	Severe Thunderstorm Warning Considerable damage threat	TOP	Geary, Jackson, Pottawatomie, Riley, Shawnee, Wabaunsee	44 min

Nearby

Flash Flood Warnings in Kansas, 2026 Every 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; radar from the NEXRAD Level II archive.