Alert archive / Kansas / Severe Thunderstorm Warnings in 2026

Severe Thunderstorm Warning 7, NWS Topeka, KS

April 9, 2026Washington County, Kansas

NWS Topeka, KS issued this severe thunderstorm warning at Apr 9, 2026, 9:32 AM CDT for Washington County, Kansas. It was in force for 28 min. No storm report in the archive falls inside the area while it was in force.

The area

The outline as issued.

The facts

Issued
Apr 9, 2026, 9:32 AM CDT (14:32 UTC)
Expired
Apr 9, 2026, 10:00 AM CDT
In force
28 min
Issued by
NWS Topeka, KS
Area
Storm-based polygon
Hail
1.25 in
Wind
50.0 mph

County Washington County, KS

The radar

The Topeka radar (KTWX), 103 km from the middle of the area, began a volume at 14:32 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 severe thunderstorm 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 nearest sounding before it

Topeka, KS (KTOP), launched 12:00Z, 2.5 hours before the alert went out and 143 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 12:00Z on 2026-04-09Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 joules per kilogram.LCL10008507005003002001001 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 12:00Z on 2026-04-09The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 77 square meters per square second.19395878Sfc1 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
0 J/kg
Mixed-layer CIN
No buoyant parcel
Mixed-layer LCL
1733 m above ground
0-6 km bulk shear
34 kt
0-1 km storm-relative helicity
77 m²/s²
0-3 km storm-relative helicity
108 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted.

107 
WUUS53 KTOP 091432
SVRTOP
KSC201-091500-
/O.NEW.KTOP.SV.W.0007.260409T1432Z-260409T1500Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Topeka KS
932 AM CDT Thu Apr 9 2026

The National Weather Service in Topeka has issued a

* Severe Thunderstorm Warning for...
  Southeastern Washington County in north central Kansas...

* Until 1000 AM CDT.

* At 931 AM CDT, a severe thunderstorm was located over Palmer,
  moving east at 35 mph.

  HAZARD...Half dollar size hail.

  SOURCE...Radar indicated.

  IMPACT...Damage to vehicles is expected.

* Locations impacted include...
  Linn, Greenleaf, Barnes, and Palmer.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

For your protection move to an interior room on the lowest floor of a
building.

&&

LAT...LON 3958 9720 3967 9724 3985 9686 3961 9685
TIME...MOT...LOC 1431Z 249DEG 30KT 3964 9715 

HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...1.25 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...<50 MPH

$$

Reese
2 follow-up statements
602 
WWUS53 KTOP 091445
SVSTOP

Severe Weather Statement
National Weather Service Topeka KS
945 AM CDT Thu Apr 9 2026

KSC201-091500-
/O.CON.KTOP.SV.W.0007.000000T0000Z-260409T1500Z/
Washington-
945 AM CDT Thu Apr 9 2026

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 1000 AM CDT
FOR SOUTHEASTERN WASHINGTON COUNTY...

At 944 AM CDT, a severe thunderstorm was located near Greenleaf,
moving east at 35 mph.

HAZARD...Quarter size hail.

SOURCE...Radar indicated.

IMPACT...Damage to vehicles is expected.

Locations impacted include...
Greenleaf and Barnes.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

For your protection move to an interior room on the lowest floor of a
building.

&&

LAT...LON 3962 9706 3970 9707 3981 9686 3974 9686
      3966 9685
TIME...MOT...LOC 1444Z 249DEG 30KT 3968 9701 

HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...1.00 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...<50 MPH

$$

Reese
380 
WWUS53 KTOP 091451
SVSTOP

Severe Weather Statement
National Weather Service Topeka KS
951 AM CDT Thu Apr 9 2026

KSC201-091501-
/O.EXP.KTOP.SV.W.0007.000000T0000Z-260409T1500Z/
Washington-
951 AM CDT Thu Apr 9 2026

...THE SEVERE THUNDERSTORM WARNING FOR SOUTHEASTERN WASHINGTON COUNTY
WILL EXPIRE AT 1000 AM CDT...

The storm which prompted the warning has weakened below severe
limits, and no longer poses an immediate threat to life or property.
Therefore, the warning will be allowed to expire.  However, small
hail is still possible with this thunderstorm.

&&

LAT...LON 3962 9706 3970 9707 3981 9686 3974 9686
      3966 9685
TIME...MOT...LOC 1451Z 249DEG 30KT 3970 9695 

$$

Reese

What forecasters said that day

The local office's own words before this severe thunderstorm 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 severe thunderstorm warning went out at Apr 9, 6:42 AM CDT, 2 hours 50 minutes earlier. Its key messages:

  • A few severe storms may develop late this afternoon into the evening, with hail and damaging winds as the main threats.
  • Cooler temperatures expected Friday with lingering showers and thunderstorms.
  • A washout isn't anticipated this weekend, but we will likely continue to see off and on showers and thunderstorms.
  • Monday and/or Tuesday could present more of a severe weather setup in the area, but plenty of uncertainty exists at this time range.
Area forecast discussion, Apr 9, 6:42 AM CDT, 2 hours 50 minutes before
Area Forecast Discussion
National Weather Service Topeka KS
642 AM CDT Thu Apr 9 2026

.KEY MESSAGES...

- A few severe storms may develop late this afternoon into the
evening, with hail and damaging winds as the main threats.

- Cooler temperatures expected Friday with lingering showers and
thunderstorms.

- A washout isn't anticipated this weekend, but we will likely
continue to see off and on showers and thunderstorms.

- Monday and/or Tuesday could present more of a severe weather setup
in the area, but plenty of uncertainty exists at this time range.

&&

.DISCUSSION...
Issued at 342 AM CDT Thu Apr 9 2026

Upper air pattern depicts a low moving across southern Ontario while
another larger low spins in the eastern Pacific. At the surface, the
front from yesterday has settled in an east-west orientation near
the I-70 corridor. Some light radar returns have been noted north of
the boundary within an area of elevated instability, but no
lightning has been observed yet. As we go through the morning, CAMs
show some more scattered activity developing in central KS closer to
sunrise and moving across northern KS through the mid to late
morning hours, all while the front lifts north. The boundary looks
to set itself up near the KS/NE border, probably on the NE side, by
this afternoon. It's unclear how much clearing will take place
through the afternoon with guidance varying somewhat on where a few
showers might linger. Even so, there does seem to be decent
agreement on thunderstorms becoming more favorable during the 6-10pm
time frame with better convergence along the front and some weak
perturbations aloft helping to provide upper-level support. The pre-
storm environment has effective shear between 35-45 kts and CAPE up
to 1000-1500 J/kg. Inverted-V soundings and DCAPE up to 1000 J/kg
signal potential for damaging winds, and the instability and shear
parameters would be sufficient for large hail with any supercells
that can develop before storms congeal into a line. Can't entirely
rule out a tornado if a supercell moves along the warm front, but
this scenario seems unlikely given high LCLs. Later into the
evening/night as storms form a line and become less organized, the
severe threat should end. There could still be some locally heavy
rainfall with storm motions being parallel to the front, unless the
front moves south quickly enough to keep storms more progressive.
Based on the latest HREF and its individual members, it would seem
reasonable for locations with storms to see an inch or two of
rainfall, though locally higher amounts may be possible if training
of storms occurs.

Heading into Friday, the front is favored to push mainly south of
the area, which would keep more of the instability and associated
severe risk to our south. That said, some post-frontal showers look
to linger into at least the morning. Coverage does not look
widespread, however, so some dry time can be anticipated during the
day. Temperatures look cooler behind the front and with clouds/rain,
resulting in highs in the upper 50s to mid 60s.

The weekend doesn't have a particular time period where strong
forcing is in play, as any rain chances are driven by weak
perturbations within the southwest flow aloft. This keeps the chance
for storms off and on, and although likely PoPs are forecast
throughout those two days, there should be some breaks in the rain
at times and a washout is not anticipated. The WAA should help
temperatures return to the 70s. Although instability increases,
shear looks weaker so confidence in severe weather is low.

The main Pacific trough comes across the western US early next week.
Depending on the speed of this system and the timing of associated
surface features, this could lead to a better setup for severe
weather in the region Monday or Tuesday. Still plenty of time for
mesoscale details such as these to be worked out in the coming days,
but it will be something to watch.

&&

.AVIATION /12Z TAFS THROUGH 12Z FRIDAY/...
Issued at 632 AM CDT Thu Apr 9 2026

Starting to see an area of showers approach the MHK terminal,
but less confidence in this reaching the Topeka area, so have
accounted for this accordingly in TAFs this morning. From there,
expect southerly winds to increase with 20-25 kt gusts
persisting through the afternoon and early evening.
Thunderstorms are then expected to develop along a front near
the KS/NE border, so have added mention of TS as they track
southeast toward terminals late tonight. Timing of this, as well
as the arrival of MVFR cigs afterwards, could be adjusted in
future issuances. Models also indicate the possibility of cigs
lowering to IFR towards the end of the period, but opted to hold
off on that mention for now.

&&

.TOP WATCHES/WARNINGS/ADVISORIES...
None.

&&

DISCUSSION...Picha
AVIATION...Picha
Hazardous weather outlook, Apr 9, 3:47 AM CDT, 5 hours 45 minutes before
Hazardous Weather Outlook
National Weather Service Topeka KS
347 AM CDT Thu Apr 9 2026

KSZ008>012-020>024-026-034>040-054>056-058-059-100900-
Republic-Washington-Marshall-Nemaha-Brown-Cloud-Clay-Riley-
Pottawatomie-Jackson-Jefferson-Ottawa-Dickinson-Geary-Morris-
Wabaunsee-Shawnee-Douglas-Lyon-Osage-Franklin-Coffey-Anderson-
347 AM CDT Thu Apr 9 2026

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

.DAY ONE...Today and tonight.

A few strong to severe storms are possible late this afternoon and
evening. Damaging wind gusts and large hail will be the main hazards
with the strongest storms.

.DAYS TWO THROUGH SEVEN...Friday through Wednesday.

The probability for widespread hazardous weather is low.

.SPOTTER MESSAGE

Spotters may be needed this afternoon or tonight.

&&

More detailed information can be found at:
www.weather.gov/media/top/DssPacket.pdf

In the hours before

Special weather statement, Apr 9, 9:08 AM CDT, 24 minutes before
Special Weather Statement
National Weather Service Topeka KS
908 AM CDT Thu Apr 9 2026

KSZ009-020-021-091430-
Clay-Cloud-Washington-
908 AM CDT Thu Apr 9 2026

...A STRONG THUNDERSTORM WILL IMPACT SOUTHWESTERN WASHINGTON...
NORTHWESTERN CLAY AND NORTHEASTERN CLOUD COUNTIES THROUGH 930 AM
CDT...

At 907 AM CDT, Doppler radar was tracking a strong thunderstorm 4
miles northeast of Aurora, moving east at 35 mph.

HAZARD...Penny size hail.

SOURCE...Radar indicated.

IMPACT...Minor hail damage to outdoor objects and vegetation is
         possible.

Locations impacted include...
Clyde, Clifton, Aurora, and Vining.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

If outdoors, consider seeking shelter inside a building.

&&

LAT...LON 3966 9738 3965 9737 3966 9737 3970 9730
      3948 9726 3945 9756 3954 9759
TIME...MOT...LOC 1407Z 253DEG 28KT 3951 9750

MAX HAIL SIZE...0.75 IN
MAX WIND GUST...<30 MPH

Reese
Special weather statement, Apr 9, 9:25 AM CDT, 7 minutes before
Special Weather Statement
National Weather Service Topeka KS
925 AM CDT Thu Apr 9 2026

KSZ009-091500-
Washington-
925 AM CDT Thu Apr 9 2026

...A STRONG THUNDERSTORM WILL IMPACT SOUTHERN WASHINGTON COUNTY
THROUGH 1000 AM CDT...

At 925 AM CDT, Doppler radar was tracking a strong thunderstorm 4
miles west of Palmer, moving east at 35 mph.

HAZARD...Penny size hail.

SOURCE...Radar indicated.

IMPACT...Minor hail damage to outdoor objects and vegetation is
         possible.

Locations impacted include...
Clifton, Linn, Greenleaf, Palmer, and Vining.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

If outdoors, consider seeking shelter inside a building.

&&

LAT...LON 3957 9729 3965 9733 3984 9688 3957 9688
TIME...MOT...LOC 1425Z 250DEG 31KT 3962 9722

MAX HAIL SIZE...0.75 IN
MAX WIND GUST...<30 MPH

Reese

The office that day

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

IssuedProductOfficeCountiesLasted
Apr 9, 9:08 AM CDTSpecial Weather StatementTOPCloud22 min
Apr 9, 9:25 AM CDTSpecial Weather StatementTOPWashington35 min
Apr 9, 4:52 PM CDTSpecial Weather StatementTOPWabaunsee23 min
Apr 9, 5:10 PM CDTSpecial Weather StatementTOPWabaunsee35 min
Apr 9, 5:27 PM CDTSevere Thunderstorm WarningTOPRepublic33 min
Apr 9, 5:51 PM CDTSevere Thunderstorm WarningTOPRepublic, Washington24 min
Apr 9, 5:53 PM CDTSpecial Weather StatementTOPShawnee37 min
Apr 9, 5:57 PM CDTSevere Thunderstorm Warning Considerable damage threatTOPRepublic33 min
Apr 9, 6:14 PM CDTSevere Thunderstorm Warning Considerable damage threatTOPWashington46 min
Apr 9, 6:17 PM CDTSevere Thunderstorm WarningTOPRepublic28 min
Apr 9, 6:27 PM CDTSevere Thunderstorm WarningTOPRepublic33 min
Apr 9, 6:45 PM CDTSevere Thunderstorm Warning Considerable damage threatTOPClay, Cloud, Republic, Washington45 min
Apr 9, 6:49 PM CDTSevere Thunderstorm WarningTOPWashington41 min
Apr 9, 6:54 PM CDTSevere Thunderstorm WarningTOPRepublic, Washington36 min
Apr 9, 6:59 PM CDTSevere Thunderstorm WarningTOPRepublic31 min

Nearby

Severe Thunderstorm Warnings in Kansas, 2026Every severe thunderstorm 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.