Alert archive / Kansas / Severe Thunderstorm Warnings in 2009

Severe Thunderstorm Warning 96, NWS Wichita, KS

May 1, 2009Chautauqua County, Kansas

NWS Wichita, KS issued this severe thunderstorm warning at May 1, 2009, 1:09 PM CDT for Chautauqua County, Kansas. It was in force for 23 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: May 1, 2009, 1:09 PM CDT (18:09 UTC)
Expired: May 1, 2009, 1:32 PM CDT
In force: 23 min
Issued by: NWS Wichita, KS
Area: Storm-based polygon

County Chautauqua County, KS

The radar

The Wichita radar (KICT), 120 km from the middle of the area, began a volume at 18:09 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

Lamont, OK (KLMN), launched 12:00Z, 6.2 hours before the alert went out and 125 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: 1247 J/kg
Mixed-layer CIN: -68 J/kg
Mixed-layer LCL: 472 m above ground
0-6 km bulk shear: 36 kt
0-1 km storm-relative helicity: 124 m²/s²
0-3 km storm-relative helicity: 230 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 8.1

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 Wichita, KS wrote its last area forecast discussion before this severe thunderstorm warning went out at May 1, 12:29 PM CDT, 40 minutes earlier.

Area forecast discussion, May 1, 12:29 PM CDT, 40 minutes before

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Hazardous weather outlook, May 1, 10:38 AM CDT, 2 hours 31 minutes before

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In the hours before

Special weather statement, May 1, 10:54 AM CDT, 2 hours 15 minutes before

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Local storm report, May 1, 11:06 AM CDT, 2 hours 3 minutes before

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Local storm report, May 1, 11:27 AM CDT, 1 hour 42 minutes before

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Special weather statement, May 1, 11:47 AM CDT, 1 hour 22 minutes before

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Special weather statement, May 1, 12:44 PM CDT, 25 minutes before

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Special weather statement, May 1, 12:51 PM CDT, 18 minutes before

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The office that day

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

Issued	Product	Office	Counties	Lasted
Apr 30, 11:45 PM CDT	Severe Thunderstorm Warning	ICT	Labette, Montgomery	31 min
May 1, 1:09 AM CDT	Severe Thunderstorm Warning	ICT	Labette	36 min
May 1, 2:22 AM CDT	Flash Flood Warning	ICT	Labette	5 hr
May 1, 7:06 AM CDT	River Flood Warning	ICT	Montgomery, Wilson	14 hr
May 1, 11:06 AM CDT	Severe Thunderstorm Warning	ICT	Cowley	39 min
May 1, 11:57 AM CDT	Areal Flood Warning	ICT	Elk	6 hr
May 1, 12:39 PM CDT	Areal Flood Warning	ICT	Cowley	6 hr
May 1, 2:06 PM CDT	River Flood Warning	ICT	Sumner	24 hr
May 1, 2:10 PM CDT	Areal Flood Warning	ICT	Labette, Montgomery	24 hr

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.