Alert archive / Kansas / Tornado Warnings in 2026

Tornado Warning 48, NWS Topeka, KS

June 1, 2026Anderson County, Coffey County, Kansas

NWS Topeka, KS issued this tornado warning at Jun 1, 2026, 12:04 AM CDT for Anderson County, Coffey County, Kansas. It was in force for 8 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
Jun 1, 2026, 12:04 AM CDT (05:04 UTC)
Expired
Jun 1, 2026, 12:12 AM CDT
In force
8 min
Issued by
NWS Topeka, KS
Area
Storm-based polygon
Tornado
Observed
Hail
1.75 in

Counties Anderson County, KS, Coffey County, KS

The radar

The Topeka radar (KTWX), 112 km from the middle of the area, began a volume at 05:09 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 tornado 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 watch it was issued in

The SPC watch in force over the same counties when this warning went out.

IssuedProductOfficeLasted
May 31, 8:53 PM CDTSevere Thunderstorm WatchSPC8 hr

The nearest sounding before it

Topeka, KS (KTOP), launched 00:00Z, 5.1 hours before the alert went out and 101 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 00:00Z on 2026-06-01Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 3361 joules per kilogram.LCLLFCEL10008507005003002001001 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 00:00Z on 2026-06-01The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 86 square meters per square second.193958Sfc1 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
3361 J/kg
Mixed-layer CIN
-3 J/kg
Mixed-layer LCL
898 m above ground
0-6 km bulk shear
44 kt
0-1 km storm-relative helicity
86 m²/s²
0-3 km storm-relative helicity
147 m²/s²
Significant tornado parameter
2.2
Supercell composite
10.3

Open this sounding in Storm Lab

The text

As transmitted.

754 
WFUS53 KTOP 010504
TORTOP
KSC003-031-010530-
/O.NEW.KTOP.TO.W.0048.260601T0504Z-260601T0530Z/

BULLETIN - EAS ACTIVATION REQUESTED
Tornado Warning
National Weather Service Topeka KS
1204 AM CDT Mon Jun 1 2026

The National Weather Service in Topeka has issued a

* Tornado Warning for...
  Southwestern Anderson County in east central Kansas...
  Southeastern Coffey County in east central Kansas...

* Until 1230 AM CDT.

* At 1203 AM CDT, a confirmed tornado was located near Le Roy, moving
  east at 25 mph.

  HAZARD...Damaging tornado and golf ball size hail.

  SOURCE...Emergency management confirmed tornado near Oxen at 
           1204am.

  IMPACT...Flying debris will be dangerous to those caught without 
           shelter. Mobile homes will be damaged or destroyed. 
           Damage to roofs, windows, and vehicles will occur.  Tree 
           damage is likely.

* Locations impacted include...
  Le Roy.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

To repeat, a tornado is on the ground. TAKE COVER NOW! Move to a
basement or an interior room on the lowest floor of a sturdy
building. Avoid windows. If you are outdoors, in a mobile home, or in
a vehicle, move to the closest substantial shelter and protect
yourself from flying debris.

&&

LAT...LON 3814 9575 3812 9548 3804 9547 3804 9577
TIME...MOT...LOC 0503Z 278DEG 20KT 3805 9568 

TORNADO...OBSERVED
MAX HAIL SIZE...1.75 IN

$$

Griesemer
1 follow-up statement
224 
WWUS53 KTOP 010512
SVSTOP

Severe Weather Statement
National Weather Service Topeka KS
1212 AM CDT Mon Jun 1 2026

KSC003-031-010522-
/O.CAN.KTOP.TO.W.0048.000000T0000Z-260601T0530Z/
Anderson-Coffey-
1212 AM CDT Mon Jun 1 2026

...THE TORNADO WARNING FOR SOUTHWESTERN ANDERSON AND SOUTHEASTERN
COFFEY COUNTIES IS CANCELLED...

The tornado threat has diminished and the Tornado Warning has been
cancelled. However, large hail and damaging winds remain likely and a
Severe Thunderstorm Warning remains in effect for the area.

A Severe Thunderstorm Watch remains in effect until 400 AM CDT for
east central Kansas.

&&

LAT...LON 3814 9575 3812 9548 3804 9547 3804 9577
TIME...MOT...LOC 0510Z 278DEG 20KT 3804 9561 

$$

Griesemer

What forecasters said that day

The local office's own words before this tornado 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 tornado warning went out at May 31, 6:18 PM CDT, 5 hours 46 minutes earlier. Its key messages:

  • -A conditional threat for severe storms continues this evening, however, some uncertainty exists in whether storms develop. -Best chances for storms early week will be in central KS. Chances increase eastward later in the week. -Hot and humid to start the week, slightly cooler midweek.
Area forecast discussion, May 31, 6:18 PM CDT, 5 hours 46 minutes before
Area Forecast Discussion
National Weather Service Topeka KS
618 PM CDT Sun May 31 2026

.KEY MESSAGES...

-A conditional threat for severe storms continues this evening,
 however, some uncertainty exists in whether storms develop.

-Best chances for storms early week will be in central KS. Chances
 increase eastward later in the week.

-Hot and humid to start the week, slightly cooler midweek.

&&

.DISCUSSION...
Issued at 148 PM CDT Sun May 31 2026

The main focus in the short-term is on the potential for severe
thunderstorms this evening. Looking at the synoptic pattern,
southwest flow persists aloft with an H5 trough axis across the
Northern Plains. Water vapor isn't showing much in the way of
shortwaves within the southwest flow as of midday. At the surface
low pressure is over northern Oklahoma and southern Kansas early
this afternoon. Instability has been building in the wake of this
morning's thunderstorm activity, although cloud cover is hampering
temps/dew points and associated instability a bit. The cloud cover
could continue to be a factor. However, most models agree on a quick
increase in instability into the evening with over 3000 J/kg of
MLCAPE in eastern KS by 21/22Z. The 18Z TOP RAOB still shows a cap
with 14C at 750mb. RAP forecast soundings show a similar cap, but
erode it by around 01/02Z. Some CAMs show storm initiation in our
southeastern counties around that same timeframe. Have kept POPs
only around 30 percent given uncertainty that remains on a forcing
mechanism and whether the cap can be overcome. If storms do develop,
there should be enough instability and deep layer shear to support
supercells with a damaging wind and hail risk. Backed sfc and low
level winds would also aid in a tornado risk with both RAP and HRRR
forecast soundings showing over 100 m2/s2 of 0-1km SRH and over 200
m2/s2 of 0-3km SRH.

Monday looks hot and humid with highs reaching the upper 80s and low
90s. Most of the day should be dry but chances for storms will begin
increasing again Monday night and early Tuesday, mainly in central
KS where models show impacts from a shortwave H5 trough. A mid-level
ridge will build over the area early in the week and a sfc ridge
will move in from the northeast midweek. That set up should keep the
main axis of storms in central KS until the upper ridge advances
eastward as an upper trough moves across the far northern CONUS.
Shortwaves aloft can be tough to predict several days in advance,
but in general, POPs will increase eastward late in the week as that
ridge pushes east. The 12Z run of long range models continue to show
a storm system moving over KS next weekend, which would keep rain
chances around. Temperature-wise, a slight cool down is expected
through midweek due to the sfc ridge nudging in from the east.

&&

.AVIATION /00Z TAFS THROUGH 00Z MONDAY/...
Issued at 618 PM CDT Sun May 31 2026

Main short-term aviation concern will be thunderstorm development
across east-central KS this evening that may impact KTOP and KFOE.
Kept mention at PROB30 as coverage in storms will remain isolated to
scattered in nature. Following storms this evening, model guidance
continues to be confident in fog development as clear skies build in
across the TAF locations. Ensemble guidance depicts areas further
west, such as KMHK, will see the best chances for visibilities under
1SM (60%+ chances). Areas further east may dip into MVFR and high-
end IFR status, but confidence in dense fog this far east at KTOP
and KFOE is low at this time. Fog should clear off a few hours after
sunrise Monday morning with mostly clear skies and light winds the
remainder of the TAF.

&&

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

&&

DISCUSSION...Teefey
AVIATION...Griesemer
Hazardous weather outlook, May 31, 1:58 PM CDT, 10 hours 6 minutes before
Hazardous Weather Outlook
National Weather Service Topeka KS
158 PM CDT Sun May 31 2026

KSZ008>012-020>024-026-034>040-054>056-058-059-011900-
Republic-Washington-Marshall-Nemaha-Brown-Cloud-Clay-Riley-
Pottawatomie-Jackson-Jefferson-Ottawa-Dickinson-Geary-Morris-
Wabaunsee-Shawnee-Douglas-Lyon-Osage-Franklin-Coffey-Anderson-
158 PM CDT Sun May 31 2026

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

.DAY ONE...This afternoon and tonight.

A few thunderstorms may develop in eastern Kansas this evening. Any
storm that develops could produce damaging wind, and large hail. A
tornado could also occur.

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

There is a slight chance for a few additional storms Monday
evening and night. These storms could produce some gusty winds or
small hail, primarily in central Kansas.

&&

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

In the hours before

Local storm report, May 31, 9:05 PM CDT, 2 hours 59 minutes before
Preliminary Local Storm Report
National Weather Service Topeka KS
905 PM CDT Sun May 31 2026

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

0904 PM     Hail             3 SW Olpe               38.23N 96.21W
05/31/2026  E1.75 Inch       Lyon               KS   Emergency Mngr

&&
Local storm report, May 31, 11:05 PM CDT, 59 minutes before
Preliminary Local Storm Report
National Weather Service Topeka KS
1105 PM CDT Sun May 31 2026

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

1050 PM     Hail             3 E Gridley             38.10N 95.84W
05/31/2026  M2.25 Inch       Coffey             KS   Public

            Resent. Report from mPING: Hen Egg+ (2.25
            in.).

&&
Local storm report, May 31, 11:14 PM CDT, 50 minutes before
Preliminary Local Storm Report
National Weather Service Topeka KS
1114 PM CDT Sun May 31 2026

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

1102 PM     Hail             5 WSW Emporia           38.38N 96.26W
05/31/2026  M1.00 Inch       Lyon               KS   Storm Chaser

            Spotter network report.

&&

DR
Local storm report, May 31, 11:27 PM CDT, 37 minutes before
Preliminary Local Storm Report
National Weather Service Topeka KS
1127 PM CDT Sun May 31 2026

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

1052 PM     Hail             Gridley                 38.10N 95.88W
05/31/2026  E2.50 Inch       Coffey             KS   Emergency Mngr

            Emergency manager relayed photo of estimated
            tennis ball size hail in Gridley. Time
            estimated from radar.

&&

DR
Local storm report, May 31, 11:28 PM CDT, 36 minutes before
Preliminary Local Storm Report
National Weather Service Topeka KS
1128 PM CDT Sun May 31 2026

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

1126 PM     Hail             6 W Le Roy              38.10N 95.74W
05/31/2026  E1.75 Inch       Coffey             KS   Public

            Report from mPING: Golf Ball (1.75 in.).

&&
Local storm report, May 31, 11:53 PM CDT, 11 minutes before
Preliminary Local Storm Report
National Weather Service Topeka KS
1153 PM CDT Sun May 31 2026

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

1143 PM     Hail             3 N Olpe                38.30N 96.18W
05/31/2026  E1.50 Inch       Lyon               KS   Public

            Report from mPING: Ping Pong Ball (1.50
            in.).

&&

The office that day

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

IssuedProductOfficeCountiesLasted
May 31, 8:33 PM CDTSevere Thunderstorm WarningTOPLyon27 min
May 31, 8:48 PM CDTSevere Thunderstorm WarningTOPLyon27 min
May 31, 8:57 PM CDTSevere Thunderstorm Warning Considerable damage threatTOPLyon48 min
May 31, 9:10 PM CDTSevere Thunderstorm WarningTOPLyon35 min
May 31, 9:28 PM CDTSevere Thunderstorm Warning Considerable damage threatTOPLyon, Osage47 min
May 31, 9:42 PM CDTSevere Thunderstorm WarningTOPLyon33 min
May 31, 10:12 PM CDTSevere Thunderstorm WarningTOPLyon11 min
May 31, 10:18 PM CDTSevere Thunderstorm WarningTOPCoffey27 min
May 31, 10:30 PM CDTSevere Thunderstorm WarningTOPCoffey, Lyon30 min
May 31, 10:39 PM CDTFlash Flood WarningTOPLyon4 hr
May 31, 10:39 PM CDTSevere Thunderstorm Warning Considerable damage threatTOPCoffey51 min
May 31, 10:42 PM CDTTornado WarningTOPCoffey19 min
May 31, 10:47 PM CDTSevere Thunderstorm WarningTOPDickinson25 min
May 31, 10:56 PM CDTSevere Thunderstorm Warning Considerable damage threatTOPCoffey, Lyon49 min
May 31, 11:17 PM CDTAreal Flood AdvisoryTOPLyon62 min
May 31, 11:19 PM CDTSevere Thunderstorm WarningTOPLyon26 min
May 31, 11:19 PM CDTSevere Thunderstorm WarningTOPLyon26 min
May 31, 11:23 PM CDTSevere Thunderstorm Warning Considerable damage threatTOPCoffey52 min
May 31, 11:29 PM CDTSevere Thunderstorm Warning Considerable damage threatTOPCoffey46 min
May 31, 11:40 PM CDTFlash Flood WarningTOPCoffey3 hr
May 31, 11:44 PM CDTTornado WarningTOPCoffey14 min
May 31, 11:47 PM CDTSevere Thunderstorm WarningTOPLyon43 min
Jun 1, 12:09 AM CDTSevere Thunderstorm Warning Considerable damage threatTOPAnderson, Coffey51 min
Jun 1, 12:14 AM CDTSevere Thunderstorm WarningTOPMorris, Wabaunsee31 min
Jun 1, 12:18 AM CDTFlash Flood WarningTOPLyon2 hr
Jun 1, 12:31 AM CDTSevere Thunderstorm WarningTOPLyon, Wabaunsee30 min
Jun 1, 12:33 AM CDTSevere Thunderstorm WarningTOPLyon27 min
Jun 1, 12:37 AM CDTSevere Thunderstorm Warning Considerable damage threatTOPAnderson38 min
Jun 1, 12:40 AM CDTSevere Thunderstorm WarningTOPCoffey13 min
Jun 1, 12:45 AM CDTSevere Thunderstorm WarningTOPWabaunsee30 min
Jun 1, 12:51 AM CDTSevere Thunderstorm WarningTOPJefferson39 min
Jun 1, 1:09 AM CDTSevere Thunderstorm Warning Considerable damage threatTOPPottawatomie, Shawnee, Wabaunsee36 min
Jun 1, 1:27 AM CDTSevere Thunderstorm WarningTOPJefferson17 min
Jun 1, 1:40 AM CDTSevere Thunderstorm WarningTOPJackson, Shawnee35 min
Jun 1, 2:21 AM CDTAreal Flood WarningTOPCoffey, Lyon9 hr

Nearby

Tornado Warnings in Kansas, 2026Every tornado warning in 2026Tornadoes 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.