Alert archive / Kansas / Severe Thunderstorm Warnings in 2010

Severe Thunderstorm Warning 155, NWS Topeka, KS

August 10, 2010Pottawatomie County, Kansas

NWS Topeka, KS issued this severe thunderstorm warning at Aug 10, 2010, 7:45 PM CDT for Pottawatomie County, Kansas. It was in force for 30 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: Aug 10, 2010, 7:45 PM CDT (00:45 UTC)
Expired: Aug 10, 2010, 8:15 PM CDT
In force: 30 min
Issued by: NWS Topeka, KS
Area: Storm-based polygon
Hail: 1.0 in
Wind: 60.0 mph

County Pottawatomie County, KS

The radar

The Topeka radar (KTWX), 44 km from the middle of the area, began a volume at 00:49 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

Omaha, NE (KOAX), launched 00:00Z, 0.8 hours before the alert went out and 216 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-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

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: 4500 J/kg
Mixed-layer CIN: -4 J/kg
Mixed-layer LCL: 1203 m above ground
0-6 km bulk shear: 18 kt
0-1 km storm-relative helicity: 38 m²/s²
0-3 km storm-relative helicity: 126 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

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 Aug 10, 6:44 PM CDT, 1 hour 1 minute earlier.

Area forecast discussion, Aug 10, 6:44 PM CDT, 1 hour 1 minute before

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Hazardous weather outlook, Aug 10, 4:04 PM CDT, 3 hours 41 minutes before

HAZARDOUS WEATHER OUTLOOK...UPDATED
NATIONAL WEATHER SERVICE TOPEKA KS
404 PM CDT TUE AUG 10 2010

KSZ008>012-020>024-026-034>040-054>056-058-059-112115-
REPUBLIC-WASHINGTON-MARSHALL-NEMAHA-BROWN-CLOUD-CLAY-RILEY-
POTTAWATOMIE-JACKSON-JEFFERSON-OTTAWA-DICKINSON-GEARY-MORRIS-
WABAUNSEE-SHAWNEE-DOUGLAS-LYON-OSAGE-FRANKLIN-COFFEY-ANDERSON-
404 PM CDT TUE AUG 10 2010

THIS HAZARDOUS WEATHER OUTLOOK IS FOR EAST CENTRAL...NORTH
CENTRAL AND NORTHEAST KANSAS.

.DAY ONE...TONIGHT

...EXCESSIVE HEAT WARNING REMAINS IN EFFECT THROUGH FRIDAY...

ISOLATED THUNDERSTORMS WILL BE POSSIBLE TONIGHT. ORGANIZED SEVERE STORMS
ARE NOT EXPECTED TONIGHT.

.DAYS TWO THROUGH SEVEN...WEDNESDAY THROUGH MONDAY

HEAT INDICES OF 105 TO 115 WILL PERSIST THROUGH FRIDAY. A COLD
FRONT WILL APPROACH THE AREA FRIDAY AND WILL BRING A CHANCE FOR
THUNDERSTORMS FRIDAY INTO EARLY SATURDAY. IT IS TOO EARLY TO
DETERMINE IF SEVERE WEATHER WILL OCCUR WITH ANY STORMS AHEAD OF
THIS FRONT.

.SPOTTER INFORMATION STATEMENT...

SPOTTER ACTIVATION IS NOT ANTICIPATED TONIGHT.

In the hours before

Special weather statement, Aug 10, 4:38 PM CDT, 3 hours 7 minutes before

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Special weather statement, Aug 10, 5:16 PM CDT, 2 hours 29 minutes before

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Special weather statement, Aug 10, 5:45 PM CDT, 2 hours before

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Special weather statement, Aug 10, 6:28 PM CDT, 1 hour 17 minutes before

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Special weather statement, Aug 10, 6:35 PM CDT, 1 hour 10 minutes before

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Special weather statement, Aug 10, 6:58 PM CDT, 47 minutes before

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The office that day

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

Issued	Product	Office	Counties	Lasted
Aug 10, 8:14 PM CDT	Severe Thunderstorm Warning	TOP	Pottawatomie, Wabaunsee	46 min
Aug 10, 8:33 PM CDT	Severe Thunderstorm Warning	TOP	Wabaunsee	27 min
Aug 10, 8:59 PM CDT	Severe Thunderstorm Warning	TOP	Jackson, Pottawatomie, Shawnee, Wabaunsee	28 min
Aug 11, 4:35 PM CDT	Severe Thunderstorm Warning	TOP	Osage	25 min
Aug 11, 4:50 PM CDT	Severe Thunderstorm Warning	TOP	Douglas, Shawnee	40 min
Aug 11, 4:55 PM CDT	Severe Thunderstorm Warning	TOP	Osage	35 min
Aug 11, 5:09 PM CDT	Severe Thunderstorm Warning	TOP	Geary, Morris, Wabaunsee	36 min
Aug 11, 5:26 PM CDT	Severe Thunderstorm Warning	TOP	Douglas	17 min
Aug 11, 5:29 PM CDT	Severe Thunderstorm Warning	TOP	Douglas, Jefferson, Shawnee	31 min
Aug 11, 6:14 PM CDT	Severe Thunderstorm Warning	TOP	Riley, Wabaunsee	31 min
Aug 11, 6:15 PM CDT	Severe Thunderstorm Warning	TOP	Coffey, Lyon, Osage	45 min
Aug 11, 6:40 PM CDT	Severe Thunderstorm Warning	TOP	Pottawatomie, Shawnee, Wabaunsee	50 min

Nearby

Severe Thunderstorm Warnings in Kansas, 2010 Every 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.