Alert archive / Texas / Severe Thunderstorm Warnings in 2013

Severe Thunderstorm Warning 32, NWS Fort Worth, TX

February 12, 2013Jack County, Palo Pinto County, Texas

NWS Fort Worth, TX issued this severe thunderstorm warning at Feb 12, 2013, 5:49 AM CST for Jack County, Palo Pinto County, Texas. It was in force for 41 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: Feb 12, 2013, 5:49 AM CST (11:49 UTC)
Expired: Feb 12, 2013, 6:30 AM CST
In force: 41 min
Issued by: NWS Fort Worth, TX
Area: Storm-based polygon

Counties Jack County, TX, Palo Pinto County, TX

The radar

The Dallas/Ft Worth radar (KFWS), 100 km from the middle of the area, began a volume at 11:49 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

Midland Regional, TX (KMAF), launched 00:00Z, 11.8 hours before the alert went out and 389 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: 2560 m above ground
0-6 km bulk shear: 85 kt
0-1 km storm-relative helicity: 31 m²/s²
0-3 km storm-relative helicity: 145 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 Fort Worth, TX wrote its last area forecast discussion before this severe thunderstorm warning went out at Feb 12, 5:28 AM CST, 21 minutes earlier.

Area forecast discussion, Feb 12, 5:28 AM CST, 21 minutes before

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Hazardous weather outlook, Feb 12, 2:51 AM CST, 2 hours 58 minutes before

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE FORT WORTH TX
251 AM CST TUE FEB 12 2013

TXZ091>095-100>107-115>123-129>135-141>148-156>162-174-175-130900-
MONTAGUE-COOKE-GRAYSON-FANNIN-LAMAR-YOUNG-JACK-WISE-DENTON-COLLIN-
HUNT-DELTA-HOPKINS-STEPHENS-PALO PINTO-PARKER-TARRANT-DALLAS-
ROCKWALL-KAUFMAN-VAN ZANDT-RAINS-EASTLAND-ERATH-HOOD-SOMERVELL-
JOHNSON-ELLIS-HENDERSON-COMANCHE-MILLS-HAMILTON-BOSQUE-HILL-NAVARRO-
FREESTONE-ANDERSON-LAMPASAS-CORYELL-BELL-MCLENNAN-FALLS-LIMESTONE-
LEON-MILAM-ROBERTSON-
251 AM CST TUE FEB 12 2013

THIS HAZARDOUS WEATHER OUTLOOK IS FOR NORTH TEXAS.

.DAY ONE...TODAY AND TONIGHT.
ISOLATED THUNDERSTORMS ARE EXPECTED TUESDAY MORNING. THE SEVERE
WEATHER THREAT IS LOW.

.DAYS TWO THROUGH SEVEN...WEDNESDAY THROUGH MONDAY.
ON SUNDAY...ELEVATED FIRE WEATHER CONDITIONS ARE EXPECTED DUE TO
LOW RELATIVE HUMIDITIES AND SOUTH WINDS GUSTING INTO THE 20 MPH
RANGE.

.SPOTTER INFORMATION STATEMENT...
SPOTTER ACTIVATION IS NOT EXPECTED AT THIS TIME.

In the hours before

Local storm report, Feb 12, 5:12 AM CST, 37 minutes before

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Special weather statement, Feb 12, 5:30 AM CST, 19 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
Feb 12, 5:30 AM CST	Special Weather Statement	FWD	Palo Pinto	30 min
Feb 12, 5:53 AM CST	Special Weather Statement	FWD	Johnson	37 min
Feb 12, 6:31 AM CST	Special Weather Statement	FWD	Dallas	29 min
Feb 12, 7:12 AM CST	Special Weather Statement	FWD	Van Zandt	33 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.