Alert archive / Kansas / Severe Thunderstorm Warnings in 2010

Severe Thunderstorm Warning 28, NWS Topeka, KS

April 6, 20104 counties in Kansas

NWS Topeka, KS issued this severe thunderstorm warning at Apr 6, 2010, 8:03 PM CDT for 4 counties in Kansas. It was in force for 28 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 6, 2010, 8:03 PM CDT (01:03 UTC)
Expired: Apr 6, 2010, 8:31 PM CDT
In force: 28 min
Issued by: NWS Topeka, KS
Area: Storm-based polygon
Hail: 1.0 in
Wind: 60.0 mph

Counties Anderson County, KS, Coffey County, KS, Franklin County, KS, Osage County, KS

The radar

The Topeka radar (KTWX), 90 km from the middle of the area, began a volume at 01:02 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 6, 2:08 PM CDT	Severe Thunderstorm Watch	SPC	8 hr

The nearest sounding before it

Topeka, KS (KTOP), launched 00:00Z, 1.1 hours before the alert went out and 66 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: 1914 m above ground
0-6 km bulk shear: 46 kt
0-1 km storm-relative helicity: 39 m²/s²
0-3 km storm-relative helicity: 238 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 6, 3:11 PM CDT, 4 hours 52 minutes earlier.

Area forecast discussion, Apr 6, 3:11 PM CDT, 4 hours 52 minutes before

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Hazardous weather outlook, Apr 6, 4:55 PM CDT, 3 hours 8 minutes before

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In the hours before

Local storm report, Apr 6, 4:46 PM CDT, 3 hours 17 minutes before

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Local storm report, Apr 6, 4:47 PM CDT, 3 hours 16 minutes before

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Local storm report, Apr 6, 5:09 PM CDT, 2 hours 54 minutes before

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Special weather statement, Apr 6, 5:53 PM CDT, 2 hours 10 minutes before

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Local storm report, Apr 6, 6:10 PM CDT, 1 hour 53 minutes before

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Local storm report, Apr 6, 6:58 PM CDT, 1 hour 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 6, 7:28 PM CDT	Severe Thunderstorm Warning	TOP	Anderson, Coffey, Franklin, Osage	47 min
Apr 6, 7:41 PM CDT	Severe Thunderstorm Warning	TOP	Coffey, Lyon	49 min
Apr 6, 8:44 PM CDT	Severe Thunderstorm Warning	TOP	Anderson, Coffey	46 min
Apr 6, 8:56 PM CDT	Areal Flood Advisory	TOP	Anderson, Franklin	2 hr
Apr 6, 9:10 PM CDT	Severe Thunderstorm Warning	TOP	Anderson	17 min
Apr 6, 10:41 PM CDT	Areal Flood Advisory	TOP	Coffey	2 hr

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.