Alert archive / Texas / Severe Thunderstorm Warnings in 2003

Severe Thunderstorm Warning 407, NWS Fort Worth, TX

November 17, 2003Denton County, Texas

NWS Fort Worth, TX issued this severe thunderstorm warning at Nov 17, 2003, 2:13 PM CST for Denton County, Texas. It was in force for 32 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 17, 2003, 2:13 PM CST (20:13 UTC)
Expired: Nov 17, 2003, 2:45 PM CST
In force: 32 min
Issued by: NWS Fort Worth, TX
Area: Counties, with a storm outline in the text

County Denton County, TX

The radar

The Dallas/Ft Worth radar (KFWS), 72 km from the middle of the area, began a volume at 20:17 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 watch it was issued in

The SPC watch in force over the same counties when this warning went out.

Issued	Product	Office	Lasted
Nov 17, 12:20 PM CST	Tornado Watch	SPC	6 hr

The nearest sounding before it

Fort Worth, TX (KFWD), launched 12:00Z, 8.2 hours before the alert went out and 45 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: 1175 J/kg
Mixed-layer CIN: -13 J/kg
Mixed-layer LCL: 571 m above ground
0-6 km bulk shear: 35 kt
0-1 km storm-relative helicity: 153 m²/s²
0-3 km storm-relative helicity: 88 m²/s²
Significant tornado parameter: 0.6
Supercell composite: 3.1

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 Fort Worth, TX wrote its last area forecast discussion before this severe thunderstorm warning went out at Nov 17, 11:15 AM CST, 2 hours 58 minutes earlier.

Area forecast discussion, Nov 17, 11:15 AM CST, 2 hours 58 minutes before

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Hazardous weather outlook, Nov 17, 9:00 AM CST, 5 hours 13 minutes before

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In the hours before

Special weather statement, Nov 17, 12:30 PM CST, 1 hour 43 minutes before

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Local storm report, Nov 17, 12:58 PM CST, 1 hour 15 minutes before

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Special weather statement, Nov 17, 1:10 PM CST, 1 hour 3 minutes before

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Local storm report, Nov 17, 1:22 PM CST, 51 minutes before

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Special weather statement, Nov 17, 1:48 PM CST, 25 minutes before

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Special weather statement, Nov 17, 2:05 PM CST, 8 minutes before

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The office that day

Everything else NWS Fort Worth, TX issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Nov 17, 7:02 AM CST	Severe Thunderstorm Warning	FWD	Freestone, Limestone, Navarro	58 min
Nov 17, 12:11 PM CST	Severe Thunderstorm Warning	FWD	Erath, Hood, Palo Pinto, Parker	64 min

Nearby

Severe Thunderstorm Warnings in Texas, 2003 Every severe thunderstorm warning in 2003

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.