Alert archive / Texas / Severe Thunderstorm Warnings in 2013

Severe Thunderstorm Warning 270, NWS Fort Worth, TX

November 21, 2013Palo Pinto County, Parker County, Texas

NWS Fort Worth, TX issued this severe thunderstorm warning at Nov 21, 2013, 5:55 PM CST for Palo Pinto County, Parker County, Texas. It was in force for 50 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 21, 2013, 5:55 PM CST (23:55 UTC)
Expired: Nov 21, 2013, 6:45 PM CST
In force: 50 min
Issued by: NWS Fort Worth, TX
Area: Storm-based polygon

Counties Palo Pinto County, TX, Parker County, TX

The radar

The Dallas/Ft Worth radar (KFWS), 74 km from the middle of the area, began a volume at 23:56 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, 11.9 hours before the alert went out and 72 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: 19 J/kg
Mixed-layer CIN: -125 J/kg
Mixed-layer LCL: 509 m above ground
0-6 km bulk shear: 43 kt
0-1 km storm-relative helicity: 246 m²/s²
0-3 km storm-relative helicity: 227 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.8

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 21, 4:02 PM CST, 1 hour 53 minutes earlier.

Area forecast discussion, Nov 21, 4:02 PM CST, 1 hour 53 minutes before

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Hazardous weather outlook, Nov 21, 3:31 PM CST, 2 hours 24 minutes before

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In the hours before

Special weather statement, Nov 21, 1:35 PM CST, 4 hours 20 minutes before

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Special weather statement, Nov 21, 2:17 PM CST, 3 hours 38 minutes before

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Special weather statement, Nov 21, 3:30 PM CST, 2 hours 25 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 21, 1:25 PM CST	Tornado Warning	FWD	Limestone	35 min
Nov 21, 1:35 PM CST	Special Weather Statement	FWD	Robertson	25 min
Nov 21, 2:17 PM CST	Special Weather Statement	FWD	Falls	28 min
Nov 21, 3:47 PM CST	Freezing Rain Advisory	FWD	Comanche, Cooke, Eastland, Erath, Hamilton, Hood and 9 more	20 hr
Nov 21, 4:16 PM CST	Severe Thunderstorm Warning	FWD	Palo Pinto, Stephens	59 min
Nov 21, 4:29 PM CST	Areal Flood Advisory	FWD	Robertson	2 hr
Nov 21, 4:46 PM CST	Severe Thunderstorm Warning	FWD	Palo Pinto	29 min
Nov 21, 5:15 PM CST	Severe Thunderstorm Warning	FWD	Jack, Palo Pinto, Parker, Wise	60 min

Nearby

Severe Thunderstorm Warnings in Texas, 2013 Every severe thunderstorm warning in 2013

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.