Alert archive / Kansas / Special Weather Statements in 2026

Special Weather Statement, NWS Topeka, KS

August 5, 2026Lyon County, Kansas

NWS Topeka, KS issued this special weather statement at Aug 5, 2026, 11:13 PM CDT for Lyon County, Kansas. It was in force for 32 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
Aug 5, 2026, 11:13 PM CDT (04:13 UTC)
Expired
Aug 5, 2026, 11:45 PM CDT
In force
32 min
Issued by
NWS Topeka, KS
Hail
0.88 in
Wind
30

County Lyon County, KS

The radar

The Topeka radar (KTWX), 52 km from the middle of the area, began a volume at 04:17 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.

The nearest sounding before it

Topeka, KS (KTOP), launched 00:00Z, 4.2 hours before the alert went out and 78 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 2026-08-06Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1331 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 2026-08-06The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 59 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
1331 J/kg
Mixed-layer CIN
-142 J/kg
Mixed-layer LCL
691 m above ground
0-6 km bulk shear
47 kt
0-1 km storm-relative helicity
59 m²/s²
0-3 km storm-relative helicity
307 m²/s²
Significant tornado parameter
0.2
Supercell composite
1.8

Open this sounding in Storm Lab

The text

As transmitted.

992 
WWUS83 KTOP 060413
SPSTOP

Special Weather Statement
National Weather Service Topeka KS
1113 PM CDT Wed Aug 5 2026
 
KSZ037-054-060445-
Lyon-Morris-
1113 PM CDT Wed Aug 5 2026

...A STRONG THUNDERSTORM WILL IMPACT SOUTHEASTERN MORRIS AND
NORTHWESTERN LYON COUNTIES THROUGH 1145 PM CDT...

At 1113 PM CDT, Doppler radar was tracking a strong thunderstorm over
Dunlap, moving east at 20 mph.

HAZARD...Nickel size hail.

SOURCE...Radar indicated.

IMPACT...Hail damage to outdoor objects and vegetation is possible.

Locations impacted include...
Emporia, Americus, Allen, Bushong, and Dunlap.

This includes the following highways...
 Interstate 35 between mile markers 128 and 132.
 Kansas Turnpike between mile markers 127 and 136.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

If outdoors, consider seeking shelter inside a building. 

&&

LAT...LON 3846 9635 3852 9635 3852 9647 3868 9644
      3871 9612 3838 9615
TIME...MOT...LOC 0413Z 275DEG 18KT 3858 9634 

MAX HAIL SIZE...0.88 IN
MAX WIND GUST...<30 MPH

$$

What forecasters said that day

The local office's own words before this special weather statement 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 special weather statement went out at Aug 5, 6:41 PM CDT, 4 hours 32 minutes earlier. Its key messages:

  • Showers and storms - an isolated severe storm or two tonight - remain in the forecast through Friday.
  • Heat builds once again into and through this weekend lasting into early next week.
Area forecast discussion, Aug 5, 6:41 PM CDT, 4 hours 32 minutes before
Area Forecast Discussion
National Weather Service Topeka KS
641 PM CDT Wed Aug 5 2026

.KEY MESSAGES...

- Showers and storms - an isolated severe storm or two tonight -
remain in the forecast through Friday.

- Heat builds once again into and through this weekend lasting
into early next week.

&&

.DISCUSSION...
Issued at 230 PM CDT Wed Aug 5 2026

The primary upper level features remain slow to evolve over the
CONUS with a broad cyclonic flow regime in place stretching from the
Great Lakes back through the northern Rockies. Over the Desert
Southwest a weak anticyclone remains with subtropical moist plume
noted across northern Mexico into the Baja region. Across the local
area, a weak modified frontal boundary has very slowly been being
pushed southeast across the area by a weak upper level shortwave
rounding the base of the broader cyclonic flow.

This frontal zone remain the focus for much of the next 12 to 18 hrs
across the area. A few breaks in the clouds have resulted this
afternoon and overall the low ceilings have lifted through the day
with general warming of the BL and then also slightly drier air
slowly being advected into the area from Nebraska well behind the
front. This should remain the trend into the overnight period.
However, a few strong to possibly a severe storm or two may be
possible over mainly east-central areas but one or two could form
along I-70 this evening into early overnight over central Kansas
areas once the LLJ becomes active. Overall, forecast soundings do
have some steep mid-level lapse rates and the shear within the layer
of instability could support a few strong storms that persist long
enough to develop hail that cold be around quarter size. Wind may
become a hazard with early storms but appears to be an overall low
risk. Brief heavy rain mainly over east-central areas may cause
areal flooding if storms are slow moving enough. At this point, not
expecting major flooding issues but not zero risk either with PW
values approaching 2 inches at across parts of east-central into far
northeast Kansas areas. This overall threat generally lasts from
this evening through part of the overnight period before the LLJ
veers and storms should then focus south and east of the area.

Thursday night and Friday morning could see more chances for showers
and storms with another weak embedded shortwave working through the
upper pattern but the base of the broader trough should shift east
with the better ascent focused east of the general area. Still, a
weak lee trough with nocturnal LLJ may support overnight showers and
embedded storms late Thursday night into early Friday morning.

The heat becomes the focus through the weekend into Monday with the
hottest days trending into Sunday/Monday. Can't rule out later heat
headlines being needed. But right now, generally good agreement in
the western CONUS ridge spreading east into the area appears on
track. Some ensemble data suggest H85 temps from 25-30C range set up
across the area which if no storms end up moving into the area then
expect generally clear enough conditions that insolation and dry
adiabatic mixing will push surface temps to the mid to upper 90s
with dewpoints in low to mid 70s again will yield heat index values
around 103-105F degrees over at least part of the area Sunday and
Monday. Still too much uncertainty in the overall setup due to the
northeastern flank of the broader ridge could be impacted by
nocturnal storm systems moving through portions of the central
Plains into the mid and upper MS Valley regions.

&&

.AVIATION /00Z TAFS THROUGH 00Z FRIDAY/...
Issued at 641 PM CDT Wed Aug 5 2026

Expect some limitations to dominate this forecast, with low ceilings
common. Conditions look to settle into MVFR soon with convective
activity moving off to the east, but confidence is high enough to
increase to TEMPO TSRA around 05Z as the low-level jet sets up. CB
bases look relatively high but IFR impacts in TS are possible.
Stratus should return after convection ends and if it ends earlier
than anticipated, IFR levels could develop. There is some uncertainty
on when VFR conditions will return, though it could be before 00Z
Friday.

&&

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

&&

DISCUSSION...Drake
AVIATION...Poage
Hazardous weather outlook, Aug 5, 2:38 PM CDT, 8 hours 35 minutes before
Hazardous Weather Outlook
National Weather Service Topeka KS
238 PM CDT Wed Aug 5 2026

KSZ008>012-020>024-026-034>040-054>056-058-059-061945-
Republic-Washington-Marshall-Nemaha-Brown-Cloud-Clay-Riley-
Pottawatomie-Jackson-Jefferson-Ottawa-Dickinson-Geary-Morris-
Wabaunsee-Shawnee-Douglas-Lyon-Osage-Franklin-Coffey-Anderson-
238 PM CDT Wed Aug 5 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 strong to severe storms could produce mainly a hail and heavy
rainfall hazard this evening into early Thursday morning.

.DAYS TWO THROUGH SEVEN...Thursday through Tuesday.

Hot and humid conditions setup across the area this weekend with
Sunday into Monday looking to see some of the hottest conditions.

.SPOTTER INFORMATION STATEMENT...

Spotters are encouraged to report rainfall amounts over one inch
to the National Weather Service in Topeka.

&&

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

In the hours before

Special weather statement, Aug 5, 9:30 PM CDT, 1 hour 43 minutes before
Special Weather Statement
National Weather Service Topeka KS
930 PM CDT Wed Aug 5 2026

KSZ054-060300-
Lyon-
930 PM CDT Wed Aug 5 2026

...A STRONG THUNDERSTORM WILL IMPACT SOUTHEASTERN LYON COUNTY THROUGH
1000 PM CDT...

At 929 PM CDT, Doppler radar was tracking a strong thunderstorm near
Madison, moving east at 25 mph.

HAZARD...Nickel size hail.

SOURCE...Radar indicated.

IMPACT...Hail damage to outdoor objects and vegetation is possible.

This storm will remain over mainly rural areas of southeastern Lyon
County.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

If outdoors, consider seeking shelter inside a building.

&&

LAT...LON 3817 9622 3825 9624 3828 9595 3826 9595
      3826 9596 3817 9596
TIME...MOT...LOC 0229Z 261DEG 23KT 3818 9612

MAX HAIL SIZE...0.88 IN
MAX WIND GUST...<30 MPH
Special weather statement, Aug 5, 9:49 PM CDT, 1 hour 24 minutes before
Special Weather Statement
National Weather Service Topeka KS
949 PM CDT Wed Aug 5 2026

KSZ037-060315-
Morris-
949 PM CDT Wed Aug 5 2026

...A STRONG THUNDERSTORM WILL IMPACT SOUTHEASTERN MORRIS COUNTY
THROUGH 1015 PM CDT...

At 948 PM CDT, Doppler radar was tracking a strong thunderstorm 8
miles southeast of Wilsey, moving east at 25 mph.

HAZARD...Nickel size hail.

SOURCE...Radar indicated.

IMPACT...Hail damage to outdoor objects and vegetation is possible.

Locations impacted include...
Dunlap.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

If outdoors, consider seeking shelter inside a building.

&&

LAT...LON 3852 9668 3858 9668 3865 9635 3852 9636
TIME...MOT...LOC 0248Z 261DEG 22KT 3853 9659

MAX HAIL SIZE...0.88 IN
MAX WIND GUST...<30 MPH
Local storm report, Aug 5, 10:27 PM CDT, 46 minutes before
Preliminary Local Storm Report
National Weather Service Topeka KS
1027 PM CDT Wed Aug 5 2026

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

1024 PM     Hail             3 S Melvern             38.46N 95.63W
08/05/2026  E1.00 Inch       Osage              KS   Trained Spotter

&&

Flanagan
Special weather statement, Aug 5, 10:43 PM CDT, 30 minutes before
Special Weather Statement
National Weather Service Topeka KS
1043 PM CDT Wed Aug 5 2026

KSZ056-058-059-060415-
Coffey-Franklin-Anderson-
1043 PM CDT Wed Aug 5 2026

...A STRONG THUNDERSTORM WILL IMPACT SOUTH CENTRAL FRANKLIN...
NORTHERN ANDERSON AND EAST CENTRAL COFFEY COUNTIES THROUGH 1115 PM
CDT...

At 1043 PM CDT, Doppler radar was tracking a strong thunderstorm 4
miles southwest of Harris, moving northeast at 35 mph.

HAZARD...Strong wind gusts of 50 to 55 mph and penny size hail.

SOURCE...Radar indicated.

IMPACT...Gusty winds could knock down tree limbs and blow around
         unsecured objects. Minor hail damage to outdoor objects and
         vegetation is possible.

Locations impacted include...
Garnett, Richmond, Westphalia, and Harris.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

If outdoors, consider seeking shelter inside a building.

&&

LAT...LON 3814 9550 3829 9562 3847 9529 3826 9512
TIME...MOT...LOC 0343Z 240DEG 31KT 3826 9548

MAX HAIL SIZE...0.75 IN
MAX WIND GUST...55 MPH
Special weather statement, Aug 5, 11:13 PM CDT, 0 minutes before
Special Weather Statement
National Weather Service Topeka KS
1113 PM CDT Wed Aug 5 2026

KSZ037-054-060445-
Lyon-Morris-
1113 PM CDT Wed Aug 5 2026

...A STRONG THUNDERSTORM WILL IMPACT SOUTHEASTERN MORRIS AND
NORTHWESTERN LYON COUNTIES THROUGH 1145 PM CDT...

At 1113 PM CDT, Doppler radar was tracking a strong thunderstorm over
Dunlap, moving east at 20 mph.

HAZARD...Nickel size hail.

SOURCE...Radar indicated.

IMPACT...Hail damage to outdoor objects and vegetation is possible.

Locations impacted include...
Emporia, Americus, Allen, Bushong, and Dunlap.

This includes the following highways...
 Interstate 35 between mile markers 128 and 132.
 Kansas Turnpike between mile markers 127 and 136.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

If outdoors, consider seeking shelter inside a building.

&&

LAT...LON 3846 9635 3852 9635 3852 9647 3868 9644
      3871 9612 3838 9615
TIME...MOT...LOC 0413Z 275DEG 18KT 3858 9634

MAX HAIL SIZE...0.88 IN
MAX WIND GUST...<30 MPH

The office that day

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

IssuedProductOfficeCountiesLasted
Aug 5, 9:30 PM CDTSpecial Weather StatementTOPLyon30 min
Aug 5, 9:49 PM CDTSpecial Weather StatementTOPMorris26 min
Aug 5, 10:19 PM CDTSevere Thunderstorm WarningTOPCoffey, Franklin, Osage26 min
Aug 5, 10:33 PM CDTSevere Thunderstorm WarningTOPLyon, Morris27 min
Aug 5, 10:43 PM CDTSpecial Weather StatementTOPAnderson32 min
Aug 5, 10:52 PM CDTSevere Thunderstorm Warning Considerable damage threatTOPLyon38 min
Aug 5, 11:16 PM CDTSpecial Weather StatementTOPCoffey29 min
Aug 5, 11:25 PM CDTSpecial Weather StatementTOPCoffey35 min
Aug 5, 11:52 PM CDTSpecial Weather StatementTOPLyon23 min
Aug 5, 11:54 PM CDTSpecial Weather StatementTOPAnderson, Coffey36 min
Aug 6, 12:10 AM CDTSevere Thunderstorm WarningTOPAnderson, Coffey24 min

Nearby

Special Weather Statements in Kansas, 2026Every special weather statement 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.