Alert archive / Kansas / Severe Thunderstorm Warnings in 2009

Severe Thunderstorm Warning 57, NWS Topeka, KS

April 26, 2009Ottawa County, Kansas

NWS Topeka, KS issued this severe thunderstorm warning at Apr 26, 2009, 1:05 PM CDT for Ottawa County, Kansas. It was in force for 40 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: Apr 26, 2009, 1:05 PM CDT (18:05 UTC)
Expired: Apr 26, 2009, 1:45 PM CDT
In force: 40 min
Issued by: NWS Topeka, KS
Area: Storm-based polygon

County Ottawa County, KS

The radar

The Topeka radar (KTWX), 123 km from the middle of the area, began a volume at 18:07 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 watch it was issued in

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

Issued	Product	Office	Lasted
Apr 26, 11:07 AM CDT	Tornado Watch PDS	SPC	7 hr

The nearest sounding before it

Topeka, KS (KTOP), launched 12:00Z, 6.1 hours before the alert went out and 174 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: 0 J/kg
Mixed-layer CIN: No buoyant parcel
Mixed-layer LCL: 2039 m above ground
0-6 km bulk shear: 34 kt
0-1 km storm-relative helicity: 200 m²/s²
0-3 km storm-relative helicity: 301 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 Apr 26, 12:51 PM CDT, 14 minutes earlier.

Area forecast discussion, Apr 26, 12:51 PM CDT, 14 minutes before

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Hazardous weather outlook, Apr 26, 10:03 AM CDT, 3 hours 2 minutes before

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In the hours before

Local storm report, Apr 26, 11:35 AM CDT, 1 hour 30 minutes before

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Special weather statement, Apr 26, 11:56 AM CDT, 1 hour 9 minutes before

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Local storm report, Apr 26, 11:59 AM CDT, 1 hour 6 minutes before

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Local storm report, Apr 26, 12:01 PM CDT, 1 hour 4 minutes before

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Special weather statement, Apr 26, 12:46 PM CDT, 19 minutes before

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Local storm report, Apr 26, 1:00 PM CDT, 5 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
Apr 25, 7:00 PM CDT	Severe Thunderstorm Warning	TOP	Douglas, Osage, Shawnee	45 min
Apr 25, 7:39 PM CDT	Areal Flood Advisory	TOP	Douglas, Jefferson	3 hr
Apr 25, 8:17 PM CDT	Severe Thunderstorm Warning	TOP	Douglas, Jefferson	28 min
Apr 25, 11:48 PM CDT	Severe Thunderstorm Warning	TOP	Republic	42 min
Apr 25, 11:50 PM CDT	High Wind Warning	TOP	Anderson, Coffey, Douglas, Franklin, Lyon, Osage	3 hr
Apr 26, 9:36 AM CDT	Severe Thunderstorm Warning	TOP	Cloud	39 min
Apr 26, 10:15 AM CDT	Severe Thunderstorm Warning	TOP	Cloud	45 min
Apr 26, 10:49 AM CDT	Severe Thunderstorm Warning	TOP	Republic, Washington	56 min
Apr 26, 1:07 PM CDT	Severe Thunderstorm Warning	TOP	Republic, Washington	53 min
Apr 26, 1:42 PM CDT	Severe Thunderstorm Warning	TOP	Cloud, Ottawa	48 min
Apr 26, 1:49 PM CDT	Severe Thunderstorm Warning	TOP	Clay, Washington	26 min
Apr 26, 2:14 PM CDT	Severe Thunderstorm Warning	TOP	Marshall, Washington	46 min
Apr 26, 3:19 PM CDT	Tornado Warning	TOP	Clay, Dickinson, Geary	26 min
Apr 26, 3:50 PM CDT	Flash Flood Warning	TOP	Clay, Marshall, Washington	3 hr
Apr 26, 5:50 PM CDT	Severe Thunderstorm Warning	TOP	Dickinson, Geary, Morris, Riley, Wabaunsee	40 min
Apr 26, 5:58 PM CDT	Severe Thunderstorm Warning	TOP	Pottawatomie, Wabaunsee	27 min
Apr 26, 6:13 PM CDT	Flash Flood Warning	TOP	Dickinson, Geary, Morris	4 hr
Apr 26, 6:38 PM CDT	Severe Thunderstorm Warning	TOP	Jackson, Jefferson, Nemaha, Shawnee	37 min

Nearby

Severe Thunderstorm Warnings in Kansas, 2009 Every severe thunderstorm warning in 2009

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.