Alert archive / Texas / Severe Thunderstorm Warnings in 2004

Severe Thunderstorm Warning 281, NWS San Angelo, TX

November 20, 2004McCulloch County, Texas

NWS San Angelo, TX issued this severe thunderstorm warning at Nov 20, 2004, 3:17 PM CST for McCulloch County, Texas. It was in force for 58 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: Nov 20, 2004, 3:17 PM CST (21:17 UTC)
Expired: Nov 20, 2004, 4:15 PM CST
In force: 58 min
Issued by: NWS San Angelo, TX
Area: Counties, with a storm outline in the text

County McCulloch County, TX

The radar

The San Angelo radar (KSJT), 110 km from the middle of the area, began a volume at 21:20 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

Fort Worth, TX (KFWD), launched 12:00Z, 9.3 hours before the alert went out and 266 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: 36 J/kg
Mixed-layer CIN: -119 J/kg
Mixed-layer LCL: 895 m above ground
0-6 km bulk shear: 48 kt
0-1 km storm-relative helicity: 35 m²/s²
0-3 km storm-relative helicity: 91 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 San Angelo, TX wrote its last area forecast discussion before this severe thunderstorm warning went out at Nov 20, 2:17 PM CST, 1 hour earlier.

Area forecast discussion, Nov 20, 2:17 PM CST, 1 hour before

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Hazardous weather outlook, Nov 20, 2:37 PM CST, 40 minutes before

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In the hours before

Local storm report, Nov 20, 2:12 PM CST, 1 hour 5 minutes before

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Local storm report, Nov 20, 3:02 PM CST, 15 minutes before

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Special weather statement, Nov 20, 3:06 PM CST, 11 minutes before

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The office that day

Everything else NWS San Angelo, TX issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Nov 20, 1:51 PM CST	Severe Thunderstorm Warning	SJT	Schleicher	24 min
Nov 20, 1:58 PM CST	Severe Thunderstorm Warning	SJT	San Saba	37 min
Nov 20, 2:19 PM CST	Severe Thunderstorm Warning	SJT	Concho	56 min

Nearby

Severe Thunderstorm Warnings in Texas, 2004 Every severe thunderstorm warning in 2004

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.