Alert archive / Texas / Tornado Warnings in 2010

Tornado Warning 26, NWS Fort Worth, TX

September 7, 2010Wise County, Texas

NWS Fort Worth, TX issued this tornado warning at Sep 7, 2010, 4:18 PM CDT for Wise County, Texas. It was in force for 27 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 7, 2010, 4:18 PM CDT (21:18 UTC)
Expired: Sep 7, 2010, 4:45 PM CDT
In force: 27 min
Issued by: NWS Fort Worth, TX
Area: Storm-based polygon

County Wise County, TX

The radar

The Dallas/Ft Worth radar (KFWS), 79 km from the middle of the area, began a volume at 21:18 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
Sep 7, 12:12 PM CDT	Tornado Watch	SPC	8 hr

The nearest sounding before it

Fort Worth, TX (KFWD), launched 12:00Z, 9.3 hours before the alert went out and 55 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: 1740 J/kg
Mixed-layer CIN: -12 J/kg
Mixed-layer LCL: 531 m above ground
0-6 km bulk shear: 13 kt
0-1 km storm-relative helicity: -27 m²/s²
0-3 km storm-relative helicity: 41 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 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 Sep 7, 3:55 PM CDT, 23 minutes earlier.

Area forecast discussion, Sep 7, 3:55 PM CDT, 23 minutes before

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Hazardous weather outlook, Sep 7, 3:47 PM CDT, 31 minutes before

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE FORT WORTH TX
347 PM CDT TUE SEP 7 2010

TXZ091>095-100>107-115>123-129>135-141>148-156>162-174-175-081215-
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-
347 PM CDT TUE SEP 7 2010

THIS HAZARDOUS WEATHER OUTLOOK IS FOR NORTH TEXAS.

.DAY ONE...TONIGHT.
A FLASH FLOOD WATCH IS IN EFFECT FOR AREAS WEST OF A HEARNE TO
ENNIS TO SHERMAN LINE. THE REMNANTS OF TROPICAL STORM HERMINE
WILL NEAR NORTH TEXAS AND BRING HEAVY RAINFALL TO THE REGION.

ISOLATED TORNADOES WILL BE POSSIBLE ACROSS MUCH OF NORTH TEXAS
THROUGH THIS EVENING WITH THE STRONGER CONVECTION.

.DAYS TWO THROUGH SEVEN...WEDNESDAY THROUGH MONDAY.
THE FLASH FLOOD WATCH WILL REMAIN IN EFFECT FOR AREAS WEST OF A
HEARNE TO ENNIS TO SHERMAN LINE THROUGH 7 AM THURSDAY AS THE
REMNANTS OF TROPICAL STORM HERMINE PASS WEST OF THE REGION. STORM
TOTAL RAINFALL WILL AVERAGE 3 TO 5 INCHES IN THE WATCH
AREA...WITH ISOLATED TOTALS IN EXCESS OF 6 INCHES.

THE THREAT OF ISOLATED TORNADOES WILL CONTINUE ACROSS ALL OF
NORTH TEXAS WEDNESDAY WITH THE STRONGER CONVECTION.

A COLD FRONT WILL APPROACH NORTH TEXAS THIS COMING WEEKEND...WITH
THUNDERSTORM CHANCES AREAWIDE SATURDAY AND SATURDAY NIGHT.

.SPOTTER INFORMATION STATEMENT...
SPOTTER ACTIVATION WILL LIKELY BE REQUESTED THROUGH THIS EVENING
FOR POTENTIAL TORNADOES. ACTIVATION MAY ALSO BE REQUESTED THROUGH
TONIGHT FOR POTENTIAL FLOODING.

In the hours before

Special weather statement, Sep 7, 11:40 AM CDT, 4 hours 38 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE FORT WORTH TX
1140 AM CDT TUE SEP 7 2010

TXZ175-071715-
ROBERTSON TX-
1140 AM CDT TUE SEP 7 2010

...SIGNIFICANT WEATHER ADVISORY FOR...
  CENTRAL ROBERTSON COUNTY

AT 1140 AM CDT...NATIONAL WEATHER SERVICE METEOROLOGISTS DETECTED A
STRONG THUNDERSTORM 10 MILES EAST OF HEARNE...MOVING NORTH AT 30 MPH.

THIS STORM HAS HAD SOME ROTATION OVER THE LAST HALF HOUR.  TROPICAL
THUNDERSTORMS CAN MANY TIMES PRODUCE WEAK TORNADOES WITH LITTLE
WARNING.  WIND GUSTS TO 50 MPH ARE POSSIBLE WITH THIS STORM.

IF THIS STORM INTENSIFIES...A SEVERE WEATHER WARNING MAY BE NEEDED.

LAT...LON 3110 9667 3118 9638 3092 9634 3085 9641
      3075 9645 3074 9646 3073 9652
TIME...MOT...LOC 1640Z 169DEG 25KT 3084 9643

DUNN

The office that day

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

Issued	Product	Office	Counties	Lasted
Sep 7, 6:41 AM CDT	Areal Flood Advisory	FWD	Hill	2 hr
Sep 7, 8:04 AM CDT	Areal Flood Advisory	FWD	Erath	3 hr
Sep 7, 8:10 AM CDT	Areal Flood Advisory	FWD	Bosque	3 hr
Sep 7, 8:14 AM CDT	Areal Flood Advisory	FWD	Hood, Somervell	3 hr
Sep 7, 8:17 AM CDT	Areal Flood Advisory	FWD	Bosque	3 hr
Sep 7, 8:49 AM CDT	Areal Flood Advisory	FWD	Collin, Dallas, Denton, Hill, Johnson, Parker and 2 more	3 hr
Sep 7, 9:45 AM CDT	Areal Flood Advisory	FWD	Bell, Coryell, Milam	3 hr
Sep 7, 11:21 AM CDT	Areal Flood Advisory	FWD	Bosque, Falls, Hamilton, McLennan, Milam, Robertson	3 hr
Sep 7, 11:40 AM CDT	Special Weather Statement	FWD	Robertson	35 min
Sep 7, 1:11 PM CDT	Areal Flood Advisory	FWD	Hill, Hood, Johnson, Somervell	2 hr
Sep 7, 2:51 PM CDT	Tornado Warning	FWD	Johnson, Tarrant	24 min
Sep 7, 3:24 PM CDT	Tornado Warning	FWD	Collin	36 min
Sep 7, 3:26 PM CDT	Areal Flood Advisory	FWD	Dallas, Parker, Tarrant	3 hr
Sep 7, 3:46 PM CDT	Areal Flood Advisory	FWD	Collin, Denton, Wise	3 hr
Sep 7, 4:57 PM CDT	Flash Flood Warning	FWD	Delta, Lamar	2 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.