Alert archive / Texas / Tornado Warnings in 2012

Tornado Warning 23, NWS Fort Worth, TX

October 13, 2012Montague County, Texas

NWS Fort Worth, TX issued this tornado warning at Oct 13, 2012, 6:20 PM CDT for Montague County, Texas. It was in force for 25 min. No storm report in the archive falls inside the area while it was in force.

The area

The outline as issued.

The facts

Issued
Oct 13, 2012, 6:20 PM CDT (23:20 UTC)
Expired
Oct 13, 2012, 6:45 PM CDT
In force
25 min
Issued by
NWS Fort Worth, TX
Area
Storm-based polygon

County Montague County, TX

The radar

The Dallas/Ft Worth radar (KFWS), 129 km from the middle of the area, began a volume at 23:20 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.

IssuedProductOfficeLasted
Oct 13, 1:00 PM CDTTornado WatchSPC8 hr

The nearest sounding before it

Fort Worth, TX (KFWD), launched 12:00Z, 11.3 hours before the alert went out and 101 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-pSkew-T log-p diagram, Fort Worth, TX at 12:00Z on 2012-10-13Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 184 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Fort Worth, TX at 12:00Z on 2012-10-13The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 202 square meters per square second.193958Sfc1 km3 km6 km9 kmRMLM
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
184 J/kg
Mixed-layer CIN
-330 J/kg
Mixed-layer LCL
732 m above ground
0-6 km bulk shear
25 kt
0-1 km storm-relative helicity
202 m²/s²
0-3 km storm-relative helicity
187 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.2

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

045 
WFUS54 KFWD 132320
TORFWD
TXC337-132345-
/O.NEW.KFWD.TO.W.0023.121013T2320Z-121013T2345Z/

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE FORT WORTH TX
620 PM CDT SAT OCT 13 2012

THE NATIONAL WEATHER SERVICE IN FORT WORTH HAS ISSUED A

* TORNADO WARNING FOR...
  EAST CENTRAL MONTAGUE COUNTY IN NORTH CENTRAL TEXAS...

* UNTIL 645 PM CDT

* AT 620 PM CDT...NATIONAL WEATHER SERVICE METEOROLOGISTS DETECTED A
  SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO 10 MILES WEST OF
  ST. JO...MOVING NORTHEAST AT 50 MPH.

* THE TORNADO WILL BE NEAR...
  ST. JO AROUND 625 PM CDT...

PRECAUTIONARY/PREPAREDNESS ACTIONS...

MOVE TO AN INTERIOR BATHROOM...CLOSET...OR HALLWAY ON THE LOWEST
FLOOR OF YOUR BUILDING. COVER YOURSELF WITH BLANKETS...PILLOWS...OR A
MATTRESS FOR PROTECTION.

&&

LAT...LON 3365 9749 3363 9771 3373 9776 3388 9749
TIME...MOT...LOC 2320Z 242DEG 41KT 3371 9764

$$


CAVANAUGH
1 follow-up statement
775 
WWUS54 KFWD 132341
SVSFWD

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE FORT WORTH TX
641 PM CDT SAT OCT 13 2012

TXC337-132351-
/O.EXP.KFWD.TO.W.0023.000000T0000Z-121013T2345Z/
MONTAGUE TX-
641 PM CDT SAT OCT 13 2012

...THE TORNADO WARNING FOR EAST CENTRAL MONTAGUE COUNTY EXPIRES AT
645 PM CDT...

AT 641 PM CDT THE SEVERE THUNDERSTORM THAT PROMPTED THE TORNADO 
WARNING HAS WEAKENED AND ALSO EXITED THE WARNED AREA. THE WARNING 
WILL BE ALLOWED TO EXPIRE.

RADAR INDICATED THAT HEAVY RAIN...SMALL HAIL...AND GUSTY WINDS WERE 
STILL POSSIBLE FROM THE THUNDERSTORM ACROSS MONTAGUE COUNTY.

LAT...LON 3365 9749 3363 9771 3373 9776 3388 9749
TIME...MOT...LOC 2341Z 242DEG 41KT 3382 9738

$$

The office that day

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

IssuedProductOfficeCountiesLasted
Oct 13, 3:09 PM CDTSpecial Weather StatementFWDYoung36 min
Oct 13, 3:57 PM CDTSpecial Weather StatementFWDYoung33 min
Oct 13, 4:37 PM CDTSevere Thunderstorm WarningFWDYoung38 min
Oct 13, 4:56 PM CDTSpecial Weather StatementFWDMilam34 min
Oct 13, 5:11 PM CDTSevere Thunderstorm WarningFWDJack, Young35 min
Oct 13, 5:51 PM CDTSevere Thunderstorm WarningFWDMontague54 min
Oct 13, 5:59 PM CDTSevere Thunderstorm WarningFWDYoung61 min
Oct 13, 6:25 PM CDTSpecial Weather StatementFWDFreestone35 min
Oct 13, 6:37 PM CDTSevere Thunderstorm WarningFWDCooke53 min
Oct 13, 6:47 PM CDTTornado WarningFWDYoung27 min
Oct 13, 6:54 PM CDTSevere Thunderstorm WarningFWDMontague38 min

Nearby

Tornado Warnings in Texas, 2012Every tornado warning in 2012Tornadoes in 2012

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.