Flash Flood Warning 10, NWS Kansas City, MO

269 
WGUS73 KEAX 271049
FFSEAX

Flash Flood Statement
National Weather Service Kansas City/Pleasant Hill MO
549 AM CDT Mon Apr 27 2026

KSC091-209-MOC047-095-165-271500-
/O.CON.KEAX.FF.W.0010.000000T0000Z-260427T1500Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Johnson KS-Wyandotte KS-Clay MO-Jackson MO-Platte MO-
549 AM CDT Mon Apr 27 2026

...FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 10 AM CDT THIS 
MORNING FOR NORTHEASTERN JOHNSON COUNTY IN EAST CENTRAL KANSAS, 
WYANDOTTE COUNTY IN NORTHEASTERN KANSAS AND CLAY, CENTRAL JACKSON 
AND PLATTE COUNTIES IN WEST CENTRAL MISSOURI...

At 549 AM CDT, emergency management reported flash flooding across 
the warned area. Between 1 and 3 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 heavy rain.

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...
  Kansas City, Overland Park, Olathe, Independence, Lee's Summit, 
  Shawnee, Blue Springs, Lenexa, Leavenworth, Leawood, Raytown, 
  Liberty, Gladstone, Prairie Village, Lansing, Excelsior Springs, 
  Merriam, Mission, Smithville and Kearney.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 3945 9421 3898 9424 3897 9496 3898 9496
      3900 9493 3900 9492 3898 9492 3899 9491
      3920 9490 3920 9478 3921 9482 3922 9484
      3926 9483 3930 9490 3935 9491 3938 9488
      3939 9489 3939 9494 3942 9497 3945 9497

FLASH FLOOD...OBSERVED

$$

CMS

011 
WGUS73 KEAX 271135
FFSEAX

Flash Flood Statement
National Weather Service Kansas City/Pleasant Hill MO
635 AM CDT Mon Apr 27 2026

KSC091-209-MOC047-095-165-271500-
/O.CON.KEAX.FF.W.0010.000000T0000Z-260427T1500Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Johnson KS-Wyandotte KS-Clay MO-Jackson MO-Platte MO-
635 AM CDT Mon Apr 27 2026

...FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 10 AM CDT THIS 
MORNING FOR NORTHEASTERN JOHNSON COUNTY IN EAST CENTRAL KANSAS, 
WYANDOTTE COUNTY IN NORTHEASTERN KANSAS AND CLAY, CENTRAL JACKSON 
AND PLATTE COUNTIES IN WEST CENTRAL MISSOURI...

At 635 AM CDT, local law enforcement reported flash flooding across 
the warned area. Multiple roads are closed in Parkville and 
Riverside. Several water rescues are ongoing in Kansas City. Flash 
flooding is already occurring.

HAZARD...Flash flooding caused by heavy rain.

SOURCE...Law enforcement 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...
  Kansas City, Overland Park, Olathe, Independence, Lee's Summit, 
  Shawnee, Blue Springs, Lenexa, Leavenworth, Leawood, Raytown, 
  Liberty, Gladstone, Prairie Village, Lansing, Excelsior Springs, 
  Merriam, Mission, Smithville and Kearney.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

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

&&

LAT...LON 3945 9421 3898 9424 3897 9496 3898 9496
      3900 9493 3900 9492 3898 9492 3899 9491
      3920 9490 3920 9478 3921 9482 3922 9484
      3926 9483 3930 9490 3935 9491 3938 9488
      3939 9489 3939 9494 3942 9497 3945 9497

FLASH FLOOD...OBSERVED

$$

CMS

366 
WGUS73 KEAX 271453
FFSEAX

Flash Flood Statement
National Weather Service Kansas City/Pleasant Hill MO
953 AM CDT Mon Apr 27 2026

KSC091-209-MOC047-095-165-271503-
/O.CAN.KEAX.FF.W.0010.000000T0000Z-260427T1500Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Johnson KS-Wyandotte KS-Clay MO-Jackson MO-Platte MO-
953 AM CDT Mon Apr 27 2026

...FLASH FLOOD WARNING FOR NORTHEASTERN JOHNSON COUNTY IN EAST 
CENTRAL KANSAS, WYANDOTTE COUNTY IN NORTHEASTERN KANSAS AND CLAY, 
CENTRAL JACKSON AND PLATTE COUNTIES IN WEST CENTRAL MISSOURI HAS 
BEEN REPLACED WITH A FLOOD WARNING...

&&

LAT...LON 3945 9421 3898 9424 3897 9496 3898 9496
      3900 9493 3900 9492 3898 9492 3899 9491
      3920 9490 3920 9478 3921 9482 3922 9484
      3926 9483 3930 9490 3935 9491 3938 9488
      3939 9489 3939 9494 3942 9497 3945 9497

$$

73

Area Forecast Discussion
National Weather Service Kansas City/Pleasant Hill MO
358 AM CDT Mon Apr 27 2026

.KEY MESSAGES...

- Severe thunderstorms will persist through the morning across
eastern KS and western MO, with some impact on later storm
development further west.

- Strong/severe storms anticipated to develop further east  during
the afternoon and into the evening, with all severe  hazards
possible.

- Mostly quiet forecast period ahead, with some isolated chances (20-
40%) for showers/storms through the period.

&&

.SHORT TERM /THROUGH TONIGHT/...
Issued at 345 AM CDT Mon Apr 27 2026

Continued convective activity is expected through the overnight
hours into the morning today. From a mesoanalysis perspective,
elevated storm modes have been able to persist through the night
with adequate MLCAPE values (around 1000-1500 J/kg) and ample
environmental shear (50-60 kts) along the left exit region of the
LLJ. An elevated dry layer persists to the southeast of the main
line, with upscale growth occurring more towards the northeast
through time. These storms have a history of producing large hail
and damaging winds further west, which will continue to be the
concern through the overnight period. Current CAM guidance shows
this cluster of storms congealing into a line that will push towards
the southeast during the early morning hours, with consistency
between subsequent iterations of the HRRR through the night and
reflected by the 6z run of the RAP. However, continued mesoanalysis
will be the greater influence on subsequent updates to the forecast
as the event progresses. With this line of storms, there is concern
for flash flooding along a line through the KC Metro. Present PWAT
values over our immediate forecast area reside around 1-1.5 inches,
but our threshold for meeting flash flood guidance for hourly
precipitation is around 1.5 inches, which will easily be
met/exceeded in convective storms. Thus, will be continuing to
monitor the potential for flooding/flash flooding tonight and into
this morning, especially for areas where training precipitation
could occur over the next few hours.

Regarding the remainder of the day today, any lingering shower/storm
activity should gradually exit the area through the afternoon as the
cold front begins to push in with a deepening surface cyclone
lifting from the OK Panhandle towards the northeast. There is some
uncertainty on how current weather will impact storms developing
further west, as current storms would aid in further stabilizing the
atmosphere. Greater confidence in severe activity exists further
towards the east around Kirksville/Macon area, with greater
instability generation during the day and more significant synoptic
forcing along an eroding capping inversion. With any storms that
initiate along the cold frontal boundary, the threat for all severe
hazards exists, with moderate mid- level lapse rates on the order of
7.5-8 degC/km and effective shear around 50-60 kts supporting
organized storm development. Some CAMs try to force activity behind
the passing cold front, but the threat of these storms scaling
upward into severe storms remains lower, as the cold front will
effectively wipe out any favorable storm environment as it passes
through.

&&

.LONG TERM /TUESDAY THROUGH SUNDAY/...
Issued at 345 AM CDT Mon Apr 27 2026

The upper level trough north of the Great Lakes will generate
shortwaves that will invigorate some chance of precipitation through
the remainder of this week, with the chance (30-50%) for
showers/storms south of the US-50 corridor Tuesday
afternoon/evening. Otherwise, weather will remain generally quiet as
we reside under northwest flow with the upper level trough digging
towards the Great Lakes through the period. There is some chance for
additional precipitation chances (10-30%) late Thursday/early
Friday, but general model deviance at this point does not place high
confidence in this outcome. Highs will remain much cooler than in
previous days, with highs forecasted in the low-mid 60s through much
of the forecast period before warming back up near the end of the
forecast period.

&&

.AVIATION /06Z TAFS THROUGH 06Z TUESDAY/...
Issued at 1230 AM CDT Mon Apr 27 2026

Earlier weather has moved out of terminals, but redevelopment to
the west will place terminals under prevailing thunder starting
at 7z through the early morning. Expecting impacts to
visibility and cloud ceilings with storms to MVFR, but could see
visibilities drop to IFR with strongest storms. By 11Z, not
enough confidence in the persistence of thunder at terminals to
warrant a prevailing condition, so placed a PROB30 group to
account for potential of lingering showers/rain through 13z. By
roughly 15-18z, expecting winds to pick up with gusts up to
20-25 kts expected through the afternoon. Cold frontal passage
will shift winds out of the northwest to end the forecast
period, with ceilings gradually clearing out behind the front.

&&

.EAX WATCHES/WARNINGS/ADVISORIES...
MO...Flood Watch through this evening for MOZ001>008-011>017-
     020>025-028>033-037>040-043>046-053-054.
KS...Flood Watch through this evening for KSZ025-057-060-102>105.

&&

SHORT TERM...SPG
LONG TERM...SPG
AVIATION...SPG

Hazardous Weather Outlook
National Weather Service Kansas City/Pleasant Hill MO
0507 AM CDT Sun Apr 26 2026

KSZ025-057-060-102>105-MOZ001>008-011>017-020>025-028>033-037>040-
043>046-053-054-271007-
Atchison KS-Miami-Linn KS-Doniphan-Leavenworth-Wyandotte-Johnson KS-
Atchison MO-Nodaway-Worth-Gentry-Harrison-Mercer-Putnam-Schuyler-
Holt-Andrew-De Kalb-Daviess-Grundy-Sullivan-Adair-Buchanan-Clinton-
Caldwell-Livingston-Linn MO-Macon-Platte-Clay-Ray-Carroll-Chariton-
Randolph-Jackson-Lafayette-Saline-Howard-Cass-Johnson MO-Pettis-
Cooper-Bates-Henry-
0507 AM CDT Sun Apr 26 2026

This hazardous weather outlook is for northwest...north central and
west central Missouri...as well as extreme eastern Kansas.

.DAY ONE...Through tonight.

Please go to https://weather.gov/media/eax/DssPacket.pdf for more information on
potential weather hazards.

.DAYS TWO THROUGH SEVEN...Monday through Saturday.

Please go to https://weather.gov/media/eax/DssPacket.pdf for more information on
potential weather hazards.

.KEY MESSAGES...

- Conditional Threat for Severe Storms Late Afternoon Sunday

- Strong to Severe Storm Clusters Expected Sunday Evening Through
  Overnight

- Additional Severe Threat Continues Into Monday; Uncertain Evolution

- Flooding Issues Possible With Heavy Rainfall Sunday Night through
  Monday Night

Preliminary Local Storm Report
National Weather Service Kansas City/Pleasant HIll MO
349 AM CDT Mon Apr 27 2026

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

0343 AM     Tstm Wnd Gst     Tonganoxie              39.11N 95.09W
04/27/2026  M70 MPH          Leavenworth        KS   Emergency Mngr

&&

CMS

Preliminary Local Storm Report
National Weather Service Kansas City/Pleasant HIll MO
356 AM CDT Mon Apr 27 2026

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

0355 AM     Hail             1 SE Piper              39.14N 94.85W
04/27/2026  M1.00 Inch       Wyandotte          KS   Public

            Report from mPING: Quarter (1.00 in.).

&&

CMS

Preliminary Local Storm Report
National Weather Service Kansas City/Pleasant HIll MO
400 AM CDT Mon Apr 27 2026

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

0354 AM     Tstm Wnd Gst     2 NNE Lake Waukomis     39.25N 94.63W
04/27/2026  E60 MPH          Platte             MO   Public

            Time estimated from radar.

&&

CMS

Preliminary Local Storm Report
National Weather Service Kansas City/Pleasant HIll MO
401 AM CDT Mon Apr 27 2026

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

0358 AM     Tstm Wnd Gst     1 NNW Maywood           39.14N 94.81W
04/27/2026  M69 MPH          Wyandotte          KS   Local Official

&&

CMS

Preliminary Local Storm Report
National Weather Service Kansas City/Pleasant HIll MO
402 AM CDT Mon Apr 27 2026

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

0358 AM     Hail             1 NNW Maywood           39.14N 94.81W
04/27/2026  M1.00 Inch       Wyandotte          KS   Local Official

&&

CMS

Preliminary Local Storm Report
National Weather Service Kansas City/Pleasant HIll MO
405 AM CDT Mon Apr 27 2026

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

0356 AM     Hail             2 ENE Tonganoxie        39.12N 95.06W
04/27/2026  E1.00 Inch       Leavenworth        KS   Trained Spotter

&&

CMS