Alert archive / Kansas / Severe Thunderstorm Warnings in 2009

Severe Thunderstorm Warning 121, NWS Wichita, KS

May 12, 2009Montgomery County, Kansas

NWS Wichita, KS issued this severe thunderstorm warning at May 12, 2009, 2:36 PM CDT for Montgomery County, Kansas. It was in force for 22 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 12, 2009, 2:36 PM CDT (19:36 UTC)
Expired: May 12, 2009, 2:58 PM CDT
In force: 22 min
Issued by: NWS Wichita, KS
Area: Storm-based polygon

County Montgomery County, KS

The radar

The Tulsa radar (KINX), 114 km from the middle of the area, began a volume at 19:37 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, 7.6 hours before the alert went out and 167 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: 1 J/kg
Mixed-layer CIN: No buoyant parcel
Mixed-layer LCL: 498 m above ground
0-6 km bulk shear: 31 kt
0-1 km storm-relative helicity: 136 m²/s²
0-3 km storm-relative helicity: 253 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.3

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 12, 1:07 PM CDT, 1 hour 29 minutes earlier.

Area forecast discussion, May 12, 1:07 PM CDT, 1 hour 29 minutes before

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Hazardous weather outlook, May 12, 11:26 AM CDT, 3 hours 10 minutes before

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In the hours before

Special weather statement, May 12, 2:05 PM CDT, 31 minutes before

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Local storm report, May 12, 2:07 PM CDT, 29 minutes before

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Local storm report, May 12, 2:15 PM CDT, 21 minutes before

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Local storm report, May 12, 2:20 PM CDT, 16 minutes before

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Special weather statement, May 12, 2:27 PM CDT, 9 minutes before

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Local storm report, May 12, 2:31 PM CDT, 5 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
May 12, 9:47 AM CDT	Severe Thunderstorm Warning	ICT	Sumner	58 min
May 12, 10:58 AM CDT	Severe Thunderstorm Warning	ICT	Cowley	21 min
May 12, 11:16 AM CDT	Areal Flood Warning	ICT	Cowley	4 hr
May 12, 11:48 AM CDT	Severe Thunderstorm Warning	ICT	Chautauqua, Cowley, Elk	42 min
May 12, 12:09 PM CDT	Severe Thunderstorm Warning	ICT	Butler	37 min
May 12, 12:19 PM CDT	Areal Flood Warning	ICT	Butler	5 hr
May 12, 1:15 PM CDT	Areal Flood Warning	ICT	Chautauqua, Elk	5 hr
May 12, 1:41 PM CDT	Severe Thunderstorm Warning	ICT	Chautauqua	23 min
May 12, 2:50 PM CDT	Areal Flood Warning	ICT	Montgomery	18 hr
May 12, 3:49 PM CDT	Flood Watch	ICT	Allen, Butler, Chase, Chautauqua, Cowley, Elk and 6 more	31 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.