Alert archive / Texas / Tornado Warnings in 2010

Tornado Warning 51, NWS Fort Worth, TX

October 24, 2010Anderson County, Henderson County, Texas

NWS Fort Worth, TX issued this tornado warning at Oct 24, 2010, 7:20 PM CDT for Anderson County, Henderson County, Texas. It was in force for 40 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: Oct 24, 2010, 7:20 PM CDT (00:20 UTC)
Expired: Oct 24, 2010, 8:00 PM CDT
In force: 40 min
Issued by: NWS Fort Worth, TX
Area: Storm-based polygon

Counties Anderson County, TX, Henderson County, TX

The radar

The Dallas/Ft Worth radar (KFWS), 158 km from the middle of the area, began a volume at 00:21 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
Oct 24, 1:51 PM CDT	Tornado Watch	SPC	8 hr

The nearest sounding before it

Shreveport, LA (KSHV), launched 00:00Z, 0.3 hours before the alert went out and 195 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: 968 J/kg
Mixed-layer CIN: -50 J/kg
Mixed-layer LCL: 1928 m above ground
0-6 km bulk shear: 48 kt
0-1 km storm-relative helicity: 102 m²/s²
0-3 km storm-relative helicity: 228 m²/s²
Significant tornado parameter: 0.1
Supercell composite: 6.9

Open this sounding in Storm Lab

What forecasters said that day

The local office's own words before this tornado 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 tornado warning went out at Oct 24, 6:57 PM CDT, 23 minutes earlier.

Area forecast discussion, Oct 24, 6:57 PM CDT, 23 minutes before

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Hazardous weather outlook, Oct 24, 2:45 PM CDT, 4 hours 35 minutes before

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE FORT WORTH TX
245 PM CDT SUN OCT 24 2010

TXZ091>095-100>107-115>123-129>135-141>148-156>162-174-175-251100-
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-
245 PM CDT SUN OCT 24 2010

THIS HAZARDOUS WEATHER OUTLOOK IS FOR NORTH TEXAS.

.DAY ONE...THIS AFTERNOON AND TONIGHT.
THERE IS A SLIGHT RISK OF SEVERE THUNDERSTORMS THIS AFTERNOON AND
EARLY EVENING...GENERALLY EAST OF THE I-35 CORRIDOR. LARGE HAIL
AND DAMAGING STRAIGHT-LINE WINDS WILL BE THE PRIMARY THREATS.
TORNADIC SUPERCELLS ARE ALSO POSSIBLE. THE SEVERE WEATHER THREAT
WILL DIMINISH FROM WEST TO EAST AFTER SUNSET.

.DAYS TWO THROUGH SEVEN...MONDAY THROUGH SATURDAY.
WIDELY SCATTERED THUNDERSTORMS ARE EXPECTED ACROSS NORTHEAST
TEXAS MONDAY NIGHT AS A COLD FRONT MOVES THROUGH THE AREA.

.SPOTTER INFORMATION STATEMENT...
SPOTTER ACTIVATION WILL LIKELY BE REQUESTED THIS AFTERNOON AND
EVENING...PRIMARILY IN AREAS EAST OF THE I-35 CORRIDOR.

25

In the hours before

Local storm report, Oct 24, 6:32 PM CDT, 48 minutes before

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Local storm report, Oct 24, 6:33 PM CDT, 47 minutes before

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Local storm report, Oct 24, 6:35 PM CDT, 45 minutes before

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Local storm report, Oct 24, 6:54 PM CDT, 26 minutes before

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Local storm report, Oct 24, 6:55 PM CDT, 25 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE FORT WORTH TX
655 PM CDT SUN OCT 24 2010

..TIME..    ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE..    ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0639 PM     HAIL             1 SW POWELL             32.11N  96.34W
10/24/2010  E1.00 INCH       NAVARRO            TX   PUBLIC

            HAIL UP TO QUARTER SIZE WAS REPORTED NEAR POWELL. THE
            REPORT WAS SENT VIA COCORAHS.

Local storm report, Oct 24, 7:04 PM CDT, 16 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE FORT WORTH TX
704 PM CDT SUN OCT 24 2010

..TIME..    ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE..    ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0640 PM     HAIL             EUSTACE                 32.30N  95.98W
10/24/2010  E1.75 INCH       HENDERSON          TX   LAW ENFORCEMENT

The office that day

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

Issued	Product	Office	Counties	Lasted
Oct 24, 7:01 PM CDT	Severe Thunderstorm Warning	FWD	Henderson, Navarro	89 min
Oct 24, 7:56 PM CDT	Tornado Warning	FWD	Anderson	34 min
Oct 24, 8:40 PM CDT	Severe Thunderstorm Warning	FWD	Henderson, Kaufman, Van Zandt	65 min
Oct 24, 9:38 PM CDT	Severe Thunderstorm Warning	FWD	Henderson	37 min
Oct 24, 9:46 PM CDT	Tornado Warning	FWD	Henderson	14 min
Oct 25, 3:51 AM CDT	Wind Advisory	FWD	Anderson, Bell, Bosque, Collin, Comanche, Cooke and 40 more	15 hr

Nearby

Tornado Warnings in Texas, 2010 Every tornado warning in 2010 Tornadoes in 2010

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.