Alert archive / Texas / Severe Thunderstorm Warnings in 2011

Severe Thunderstorm Warning 519, NWS Fort Worth, TX

September 26, 2011Freestone County, Navarro County, Texas

NWS Fort Worth, TX issued this severe thunderstorm warning at Sep 26, 2011, 10:38 PM CDT for Freestone County, Navarro County, Texas. It was in force for 52 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: Sep 26, 2011, 10:38 PM CDT (03:38 UTC)
Expired: Sep 26, 2011, 11:30 PM CDT
In force: 52 min
Issued by: NWS Fort Worth, TX
Area: Storm-based polygon

Counties Freestone County, TX, Navarro County, TX

The nearest sounding before it

Fort Worth, TX (KFWD), launched 00:00Z, 3.6 hours before the alert went out and 141 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: 1008 J/kg
Mixed-layer CIN: -351 J/kg
Mixed-layer LCL: 1949 m above ground
0-6 km bulk shear: 21 kt
0-1 km storm-relative helicity: 129 m²/s²
0-3 km storm-relative helicity: 260 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 Sep 26, 9:44 PM CDT, 54 minutes earlier.

Area forecast discussion, Sep 26, 9:44 PM CDT, 54 minutes before

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Hazardous weather outlook, Sep 26, 2:39 PM CDT, 7 hours 59 minutes before

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE FORT WORTH TX
239 PM CDT MON SEP 26 2011

TXZ091>095-100>107-115>123-129>135-141>148-156>162-174-175-271200-
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-
239 PM CDT MON SEP 26 2011

THIS HAZARDOUS WEATHER OUTLOOK IS FOR NORTH TEXAS.

.DAY ONE...THROUGH TONIGHT.

THERE IS A SLIGHT CHANCE OF THUNDERSTORMS SOUTHEAST OF A
COMANCHE...GLEN ROSE...WAXAHACHIE...GREENVILLE LINE TONIGHT.
STRONGER STORMS THIS EVENING MAY PRODUCE WIND GUSTS TO
50 MPH...FREQUENT LIGHTNING...AND SMALL HAIL.

.DAYS TWO THROUGH SEVEN...TUESDAY THROUGH SUNDAY.

A SLIGHT CHANCE OF THUNDERSTORMS WILL CONTINUE EAST OF A BONHAM TO
ATHENS LINE TUESDAY MORNING.

A SLIGHT CHANCE OF THUNDERSTORMS CONTINUES ACROSS AREAS ROUGHLY
SOUTH OF INTERSTATE 20 TUESDAY AFTERNOON THROUGH WEDNESDAY
NIGHT...THEN AGAIN SOUTHWEST OF A BOWIE...FORT WORTH...FAIRFIELD
LINE THURSDAY NIGHT. SEVERE WEATHER IS NOT EXPECTED.

.SPOTTER INFORMATION STATEMENT...
LIMITED SPOTTER ACTIVATION MAY BE REQUESTED ROUGHLY SOUTH OF
INTERSTATE 20 THIS EVENING.

05/

In the hours before

Local storm report, Sep 26, 8:22 PM CDT, 2 hours 16 minutes before

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Local storm report, Sep 26, 8:24 PM CDT, 2 hours 14 minutes before

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Special weather statement, Sep 26, 8:33 PM CDT, 2 hours 5 minutes before

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Local storm report, Sep 26, 9:05 PM CDT, 1 hour 33 minutes before

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Special weather statement, Sep 26, 9:35 PM CDT, 1 hour 3 minutes before

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Special weather statement, Sep 26, 10:27 PM CDT, 11 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
Sep 26, 7:15 PM CDT	Special Weather Statement	FWD	Bell	30 min
Sep 26, 7:36 PM CDT	Severe Thunderstorm Warning	FWD	Bell	54 min
Sep 26, 7:45 PM CDT	Special Weather Statement	FWD	Bosque	60 min
Sep 26, 8:03 PM CDT	Severe Thunderstorm Warning	FWD	Bell, Falls, Milam	57 min
Sep 26, 8:33 PM CDT	Special Weather Statement	FWD	Bosque	27 min
Sep 26, 8:46 PM CDT	Severe Thunderstorm Warning	FWD	Bosque, Hill	59 min
Sep 26, 9:35 PM CDT	Special Weather Statement	FWD	Hill	25 min
Sep 26, 10:27 PM CDT	Special Weather Statement	FWD	Navarro	33 min
Sep 26, 11:24 PM CDT	Special Weather Statement	FWD	Anderson, Henderson	36 min
Sep 27, 3:48 PM CDT	Special Weather Statement	FWD	Lampasas	27 min
Sep 27, 3:51 PM CDT	Severe Thunderstorm Warning	FWD	Lampasas	34 min

Nearby

Severe Thunderstorm Warnings in Texas, 2011 Every severe thunderstorm warning in 2011

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.