Alert archive / Kansas / Severe Thunderstorm Warnings in 2007

Severe Thunderstorm Warning 108, NWS Topeka, KS

October 12, 2007Ottawa County, Kansas

NWS Topeka, KS issued this severe thunderstorm warning at Oct 12, 2007, 4:13 PM CDT for Ottawa County, Kansas. It was in force for 29 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: Oct 12, 2007, 4:13 PM CDT (21:13 UTC)
Expired: Oct 12, 2007, 4:42 PM CDT
In force: 29 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 21:16 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, 9.2 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: 1347 m above ground
0-6 km bulk shear: 20 kt
0-1 km storm-relative helicity: 115 m²/s²
0-3 km storm-relative helicity: 158 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 Oct 12, 3:45 PM CDT, 28 minutes earlier.

Area forecast discussion, Oct 12, 3:45 PM CDT, 28 minutes before

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Hazardous weather outlook, Oct 12, 1:31 PM CDT, 2 hours 42 minutes before

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In the hours before

Special weather statement, Oct 12, 3:43 PM CDT, 30 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
Oct 12, 5:14 PM CDT	Severe Thunderstorm Warning	TOP	Ottawa	46 min

Nearby

Severe Thunderstorm Warnings in Kansas, 2007 Every severe thunderstorm warning in 2007

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.