Alert archive / Kansas / Severe Thunderstorm Warnings in 2007

Severe Thunderstorm Warning 171, NWS Wichita, KS

October 21, 2007Woodson County, Kansas

NWS Wichita, KS issued this severe thunderstorm warning at Oct 21, 2007, 10:30 PM CDT for Woodson County, Kansas. It was in force for 12 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 21, 2007, 10:30 PM CDT (03:30 UTC)
Expired: Oct 21, 2007, 10:42 PM CDT
In force: 12 min
Issued by: NWS Wichita, KS
Area: Storm-based polygon

County Woodson County, KS

The radar

The Topeka radar (KTWX), 131 km from the middle of the area, began a volume at 03:34 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 00:00Z, 3.5 hours before the alert went out and 209 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: 1120 m above ground
0-6 km bulk shear: 95 kt
0-1 km storm-relative helicity: -67 m²/s²
0-3 km storm-relative helicity: 118 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.2

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 Oct 21, 6:29 PM CDT, 4 hours 1 minute earlier.

Area forecast discussion, Oct 21, 6:29 PM CDT, 4 hours 1 minute before

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Hazardous weather outlook, Oct 21, 6:56 PM CDT, 3 hours 34 minutes before

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  <main class="wrap">
    <section class="card" role="status" aria-live="polite">
      <div class="status" id="status">Temporary Notice</div>
      <h1 id="headline">This service is currently unavailable.</h1>
      <p id="message1">
        The site you requested is temporarily down for maintenance or an unexpected outage.
      </p>
      <p id="message2">
        Please try again in a few minutes.
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The office that day

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

Issued	Product	Office	Counties	Lasted
Oct 22, 2:47 PM CDT	Frost Advisory	ICT	Barton, Ellsworth, Lincoln, McPherson, Reno, Rice and 2 more	18 hr

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.