Alert archive / Kansas / Severe Thunderstorm Warnings in 2010
Severe Thunderstorm Warning 239, NWS Topeka, KS
NWS Topeka, KS issued this severe thunderstorm warning at Sep 18, 2010, 10:55 PM CDT for Jefferson County, Kansas. It was in force for 35 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 18, 2010, 10:55 PM CDT (03:55 UTC)
- Expired
- Sep 18, 2010, 11:30 PM CDT
- In force
- 35 min
- Issued by
- NWS Topeka, KS
- Area
- Storm-based polygon
- Hail
- 1.25 in
- Wind
- 60.0 mph
County Jefferson County, KS
The radar
The Topeka radar (KTWX), 78 km from the middle of the area, began a volume at 03:57 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, 3.9 hours before the alert went out and 34 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
- 2603 J/kg
- Mixed-layer CIN
- -59 J/kg
- Mixed-layer LCL
- 1043 m above ground
- 0-6 km bulk shear
- 40 kt
- 0-1 km storm-relative helicity
- 157 m²/s²
- 0-3 km storm-relative helicity
- 248 m²/s²
- Significant tornado parameter
- 0.1
- Supercell composite
- 0.8
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 18, 7:52 PM CDT, 3 hours 3 minutes earlier.
Area forecast discussion, Sep 18, 7:52 PM CDT, 3 hours 3 minutes before
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</html>Hazardous weather outlook, Sep 18, 12:59 PM CDT, 9 hours 56 minutes before
HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE TOPEKA KS 1259 PM CDT SAT SEP 18 2010 KSZ008>012-020>024-026-034>040-054>056-058-059-191800- REPUBLIC-WASHINGTON-MARSHALL-NEMAHA-BROWN-CLOUD-CLAY-RILEY- POTTAWATOMIE-JACKSON-JEFFERSON-OTTAWA-DICKINSON-GEARY-MORRIS- WABAUNSEE-SHAWNEE-DOUGLAS-LYON-OSAGE-FRANKLIN-COFFEY-ANDERSON- 1259 PM CDT SAT SEP 18 2010 THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF EAST CENTRAL KANSAS...NORTH CENTRAL KANSAS AND NORTHEAST KANSAS. .DAY ONE...THIS AFTERNOON AND TONIGHT. THUNDERSTORMS WILL DEVELOP ACROSS THE OUTLOOK AREA THIS AFTERNOON AND EVENING AHEAD OF A SLOW MOVING COLD FRONT. SOME OF THE STORMS MAY BE SEVERE THIS AFTERNOON AND EVENING SOUTH OF A LINE FROM MINNEAPOLIS TO HIAWATHA. LARGE HAIL UP TO THE SIZE OF HALF DOLLARS AND DAMAGING WINDS OF 60 TO 70 MPH WILL BE THE PRIMARY THREATS WITH ANY SEVERE THUNDERSTORMS. AREAS GENERALLY WITHIN 40 MILES OF THE INTERSTATE 70 CORRIDOR WILL ALSO SEE THE POSSIBILITY OF ISOLATED TORNADOES WITH THE STRONGEST THUNDERSTORMS. THUNDERSTORM CHANCES CONTINUE ACROSS NORTHERN KANSAS OVERNIGHT. THIS ACTIVITY SHOULD REMAIN BELOW SEVERE LIMITS AFTER MIDNIGHT... WITH SMALL HAIL POSSIBLE IN THE STRONGEST STORMS. .DAYS TWO THROUGH SEVEN...SUNDAY THROUGH FRIDAY. THUNDERSTORMS WILL AGAIN BE POSSIBLE FROM TUESDAY THROUGH FRIDAY AS A FRONT MOVES BACK AND FORTH ACROSS THE OUTLOOK AREA. .SPOTTER INFORMATION STATEMENT... SPOTTERS MAY BE NEEDED SOUTH OF A LINE FROM MINNEAPOLIS TO HIAWATHA BETWEEN 2PM AND MIDNIGHT.
In the hours before
Local storm report, Sep 18, 6:39 PM CDT, 4 hours 16 minutes before
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</html>Local storm report, Sep 18, 6:45 PM CDT, 4 hours 10 minutes before
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</html>Local storm report, Sep 18, 6:58 PM CDT, 3 hours 57 minutes before
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</html>Local storm report, Sep 18, 7:36 PM CDT, 3 hours 19 minutes before
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</html>Local storm report, Sep 18, 8:08 PM CDT, 2 hours 47 minutes before
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</html>Special weather statement, Sep 18, 10:25 PM CDT, 30 minutes before
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</html>The office that day
Everything else NWS Topeka, KS issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Sep 18, 10:25 PM CDT | Special Weather Statement | TOP | Jefferson | 35 min |
Nearby
Severe Thunderstorm Warnings in Kansas, 2010Every severe thunderstorm warning in 2010
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.