Alert archive / Kansas / Severe Thunderstorm Warnings in 2023
Severe Thunderstorm Warning 257, NWS Topeka, KS
NWS Topeka, KS issued this severe thunderstorm warning at Sep 21, 2023, 6:34 PM CDT for Lyon County, Kansas. It was in force for 10 min. No storm report in the archive falls inside the area while it was in force.
The area
The counties it named.
The facts
- Issued
- Sep 21, 2023, 6:34 PM CDT (23:34 UTC)
- Expired
- Sep 21, 2023, 6:44 PM CDT
- In force
- 10 min
- Issued by
- NWS Topeka, KS
- Area
- Storm-based polygon
- Hail
- 1.0 in
- Wind
- 60.0 mph
County Lyon County, KS
The radar
The Topeka radar (KTWX), 61 km from the middle of the area, began a volume at 23:35 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 12:00Z, 11.6 hours before the alert went out and 75 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.
- Mixed-layer CAPE
- 458 J/kg
- Mixed-layer CIN
- -232 J/kg
- Mixed-layer LCL
- 804 m above ground
- 0-6 km bulk shear
- 22 kt
- 0-1 km storm-relative helicity
- 21 m²/s²
- 0-3 km storm-relative helicity
- 90 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- -0.0
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 Sep 21, 2:52 PM CDT, 3 hours 42 minutes earlier.
Area forecast discussion, Sep 21, 2:52 PM CDT, 3 hours 42 minutes before
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</html>Hazardous weather outlook, Sep 21, 2:55 PM CDT, 3 hours 39 minutes before
Hazardous Weather Outlook National Weather Service Topeka KS 255 PM CDT Thu Sep 21 2023 KSZ008>012-020>024-026-034>040-054>056-058-059-222000- Republic-Washington-Marshall-Nemaha-Brown-Cloud-Clay-Riley- Pottawatomie-Jackson-Jefferson-Ottawa-Dickinson-Geary-Morris- Wabaunsee-Shawnee-Douglas-Lyon-Osage-Franklin-Coffey-Anderson- 255 PM CDT Thu Sep 21 2023 This Hazardous Weather Outlook is for central Kansas, east central Kansas, north central Kansas and northeast Kansas. .DAY ONE...This afternoon and tonight. Scattered thunderstorms are likely this evening into Friday morning, initially across north central Kansas this evening before spreading east after midnight. Widespread severe weather is not expected, but some storms could produce small hail and gusty winds. .DAYS TWO THROUGH SEVEN...Friday through Wednesday. Thunderstorms are again likely Saturday, particularly across northeast and east-central Kansas. Some of these storms could be severe, so stay tuned for future details. .SPOTTER INFORMATION STATEMENT... Spotter activation is not expected at this time. && More detailed information can be found at: www.weather.gov/media/top/DssPacket.pdf
In the hours before
Special weather statement, Sep 21, 4:27 PM CDT, 2 hours 7 minutes before
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<h1 id="headline">This service is currently unavailable.</h1>
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</html>Special weather statement, Sep 21, 4:34 PM CDT, 2 hours before
Special Weather Statement
National Weather Service Topeka KS
434 PM CDT Thu Sep 21 2023
KSZ008-212215-
Republic-
434 PM CDT Thu Sep 21 2023
...Strong thunderstorms will impact portions of central Republic
County through 515 PM CDT...
At 433 PM CDT, Doppler radar was tracking strong thunderstorms along
a line extending from 3 miles west of Republic to 5 miles east of
Norway. Movement was northeast at 20 mph.
HAZARD...Wind gusts up to 50 mph and nickel size hail.
SOURCE...Radar indicated.
IMPACT...Gusty winds could knock down tree limbs and blow around
unsecured objects. Minor damage to outdoor objects is
possible.
Locations impacted include...
Belleville, Scandia, Republic and Munden.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
If outdoors, consider seeking shelter inside a building.
Torrential rainfall is also occurring with these storms and may lead
to localized flooding. Do not drive your vehicle through flooded
roadways.
&&
LAT...LON 4000 9756 3990 9738 3967 9773 3987 9793
4000 9793
TIME...MOT...LOC 2133Z 216DEG 17KT 3991 9788 3972 9767
MAX HAIL SIZE...0.88 IN
MAX WIND GUST...50 MPH
BDSpecial weather statement, Sep 21, 4:51 PM CDT, 1 hour 43 minutes before
Special Weather Statement
National Weather Service Topeka KS
451 PM CDT Thu Sep 21 2023
KSZ008>010-020>022-212230-
Republic-Clay-Cloud-Riley-Washington-Marshall-
451 PM CDT Thu Sep 21 2023
...Strong thunderstorms will impact portions of northwestern Riley,
southeastern Republic, northeastern Clay, Washington, northeastern
Cloud and southwestern Marshall Counties through 530 PM CDT...
At 451 PM CDT, Doppler radar was tracking strong thunderstorms along
a line extending from near Cuba to 7 miles northwest of Green.
Movement was northeast at 30 mph.
HAZARD...Wind gusts up to 50 mph and nickel size hail.
SOURCE...Radar indicated.
IMPACT...Gusty winds could knock down tree limbs and blow around
unsecured objects. Minor damage to outdoor objects is
possible.
Locations impacted include...
Washington, Clyde, Clifton, Linn, Greenleaf, Morganville, Barnes,
Cuba, Morrowville, Palmer, Haddam, Mahaska, Agenda and Vining.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
If outdoors, consider seeking shelter inside a building.
Torrential rainfall is also occurring with these storms and may lead
to localized flooding. Do not drive your vehicle through flooded
roadways.
&&
LAT...LON 4000 9717 3961 9669 3941 9713 3976 9764
4000 9736
TIME...MOT...LOC 2151Z 239DEG 27KT 3979 9742 3952 9707
MAX HAIL SIZE...0.88 IN
MAX WIND GUST...50 MPH
BDSpecial weather statement, Sep 21, 5:02 PM CDT, 1 hour 32 minutes before
Special Weather Statement
National Weather Service Topeka KS
502 PM CDT Thu Sep 21 2023
KSZ037-054-212230-
Lyon-Morris-
502 PM CDT Thu Sep 21 2023
...A strong thunderstorm will impact portions of southeastern Morris
and west central Lyon Counties through 530 PM CDT...
At 502 PM CDT, Doppler radar was tracking a strong thunderstorm 7
miles north of Strong City, moving northeast at 30 mph.
HAZARD...Wind gusts up to 50 mph and nickel size hail.
SOURCE...Radar indicated.
IMPACT...Gusty winds could knock down tree limbs and blow around
unsecured objects. Minor damage to outdoor objects is
possible.
Locations impacted include...
Council Grove, Americus and Dunlap.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
If outdoors, consider seeking shelter inside a building.
Torrential rainfall is also occurring with this storm and may lead to
localized flooding. Do not drive your vehicle through flooded
roadways.
&&
LAT...LON 3852 9635 3852 9659 3858 9661 3871 9642
3849 9623 3845 9635
TIME...MOT...LOC 2202Z 243DEG 24KT 3850 9651
MAX HAIL SIZE...0.88 IN
MAX WIND GUST...50 MPH
BDSpecial weather statement, Sep 21, 5:58 PM CDT, 36 minutes before
Special Weather Statement
National Weather Service Topeka KS
558 PM CDT Thu Sep 21 2023
KSZ037-054-055-058-212330-
Coffey-Lyon-Osage-Morris-
558 PM CDT Thu Sep 21 2023
...Strong thunderstorms will impact portions of southeastern Morris,
southwestern Osage, northwestern Coffey and central Lyon Counties
through 630 PM CDT...
At 557 PM CDT, Doppler radar was tracking strong thunderstorms along
a line extending from near Dunlap to 5 miles southeast of Admire to 3
miles north of Olivet. Movement was northeast at 20 mph.
HAZARD...Wind gusts of 50 to 55 mph and nickel size hail.
SOURCE...Radar indicated.
IMPACT...Gusty winds could knock down tree limbs and blow around
unsecured objects. Minor damage to outdoor objects is
possible.
Locations impacted include...
Emporia, Osage City, Lyndon, Lebo, Americus, Reading, Allen, Admire,
Olivet, Bushong, Dunlap, Beto Junction and Melvern Lake.
This includes the following highways...
Interstate 35 between mile markers 128 and 156.
Kansas Turnpike between mile markers 124 and 147.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
If outdoors, consider seeking shelter inside a building.
Torrential rainfall is also occurring with these storms and may lead
to localized flooding. Do not drive your vehicle through flooded
roadways.
&&
LAT...LON 3852 9635 3852 9651 3865 9645 3866 9605
3864 9565 3839 9573 3837 9622 3837 9636
TIME...MOT...LOC 2257Z 211DEG 25KT 3854 9636 3857 9604 3853 9574
MAX HAIL SIZE...0.88 IN
MAX WIND GUST...55 MPH
BDSpecial weather statement, Sep 21, 6:28 PM CDT, 6 minutes before
Special Weather Statement
National Weather Service Topeka KS
628 PM CDT Thu Sep 21 2023
KSZ054>056-220015-
Lyon-Franklin-Osage-
628 PM CDT Thu Sep 21 2023
...Strong thunderstorms will impact portions of northwestern
Franklin, central Osage and northeastern Lyon Counties through 715 PM
CDT...
At 628 PM CDT, Doppler radar was tracking strong thunderstorms along
a line extending from 6 miles northeast of Americus to 5 miles north
of Reading to near Lyndon. Movement was northeast at 10 mph.
HAZARD...Wind gusts up to 50 mph and nickel size hail.
SOURCE...Radar indicated.
IMPACT...Gusty winds could knock down tree limbs and blow around
unsecured objects. Minor damage to outdoor objects is
possible.
Locations impacted include...
Osage City, Lyndon, Pomona, Quenemo, Melvern, Allen, Admire and
Pomona Lake.
This includes Kansas Turnpike between mile markers 137 and 151.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
If outdoors, consider seeking shelter inside a building.
Torrential rainfall is also occurring with these storms and may lead
to localized flooding. Do not drive your vehicle through flooded
roadways.
&&
LAT...LON 3868 9617 3873 9582 3873 9534 3849 9559
3853 9601 3852 9626
TIME...MOT...LOC 2328Z 220DEG 7KT 3856 9618 3859 9596 3860 9567
MAX HAIL SIZE...0.88 IN
MAX WIND GUST...50 MPHThe office that day
Everything else NWS Topeka, KS issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Sep 21, 3:29 PM CDT | Special Weather Statement | TOP | Cloud | 31 min |
| Sep 21, 3:33 PM CDT | Severe Thunderstorm Warning | TOP | Cloud | 27 min |
| Sep 21, 3:50 PM CDT | Special Weather Statement | TOP | Cloud | 25 min |
| Sep 21, 4:12 PM CDT | Special Weather Statement | TOP | Cloud | 48 min |
| Sep 21, 4:27 PM CDT | Special Weather Statement | TOP | Clay | 33 min |
| Sep 21, 4:34 PM CDT | Special Weather Statement | TOP | Republic | 41 min |
| Sep 21, 4:51 PM CDT | Special Weather Statement | TOP | Washington | 39 min |
| Sep 21, 5:02 PM CDT | Special Weather Statement | TOP | Morris | 28 min |
| Sep 21, 5:18 PM CDT | Severe Thunderstorm Warning | TOP | Lyon, Morris | 42 min |
| Sep 21, 5:58 PM CDT | Special Weather Statement | TOP | Lyon | 32 min |
| Sep 21, 6:28 PM CDT | Special Weather Statement | TOP | Osage | 47 min |
Nearby
Severe Thunderstorm Warnings in Kansas, 2023Every severe thunderstorm warning in 2023
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.