Alert archive / Texas / Tornado Warnings in 2010

Tornado Warning 53, NWS Fort Worth, TX

October 24, 2010Henderson County, Texas

NWS Fort Worth, TX issued this tornado warning at Oct 24, 2010, 9:46 PM CDT for Henderson County, Texas. It was in force for 14 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 24, 2010, 9:46 PM CDT (02:46 UTC)
Expired: Oct 24, 2010, 10:00 PM CDT
In force: 14 min
Issued by: NWS Fort Worth, TX
Area: Storm-based polygon

County Henderson County, TX

The radar

The Shreveport radar (KSHV), 157 km from the middle of the area, began a volume at 02:47 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.

Did it verify

Not verified. The Iowa Environmental Mesonet's Cow found no qualifying storm report inside this tornado warning while it was in force. That is not proof nothing happened: reports are thin where few people live.

Cow counts a report within 15 km of the polygon while the warning was in force: a tornado for a tornado warning; hail of 1 inch or more, a gust of 58 mph or more or wind damage for a severe thunderstorm warning; a flash flood report for a flash flood warning.

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, 2.8 hours before the alert went out and 166 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

The text

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

811 
WFUS54 KFWD 250246
TORFWD
TXC213-250300-
/O.NEW.KFWD.TO.W.0053.101025T0246Z-101025T0300Z/

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE FORT WORTH TX
946 PM CDT SUN OCT 24 2010

THE NATIONAL WEATHER SERVICE IN FORT WORTH HAS ISSUED A

* TORNADO WARNING FOR...
  NORTHEASTERN HENDERSON COUNTY IN NORTHEAST TEXAS...

* UNTIL 1000 PM CDT

* AT 946 PM CDT...NATIONAL WEATHER SERVICE METEOROLOGISTS DETECTED A
  DEVELOPING TORNADO 4 MILES SOUTHWEST OF CHANDLER...MOVING EAST 
AT   40 MPH.  IF YOU ARE IN THE TOWN OF CHANDLER TAKE COVER 
IMMEDIATELY!

* THE TORNADO WILL CLOSE TO CHANDLER BY 950 PM CDT.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

EVACUATE MOBILE HOMES FOR A STORM SHELTER OR PERMANENT BUILDING. IF
NO SHELTER IS AVAILABLE...LIE FLAT IN THE NEAREST DITCH AND COVER
YOUR HEAD.

A TORNADO WATCH REMAINS IN EFFECT UNTIL 1000 PM CDT SUNDAY EVENING
FOR EASTERN TEXAS.

&&

LAT...LON 3224 9547 3220 9546 3217 9546 3216 9548
      3219 9563 3236 9560 3236 9544 3228 9544
TIME...MOT...LOC 0246Z 277DEG 33KT 3227 9550

$$


CAVANAUGH

1 follow-up statement

230 
WWUS54 KFWD 250259
SVSFWD

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE FORT WORTH TX
959 PM CDT SUN OCT 24 2010

TXC213-250309-
/O.EXP.KFWD.TO.W.0053.000000T0000Z-101025T0300Z/
HENDERSON TX-
959 PM CDT SUN OCT 24 2010

...THE TORNADO WARNING FOR NORTHEASTERN HENDERSON COUNTY EXPIRES AT
1000 PM CDT...

AT 959 PM CDT THE SEVERE THUNDERSTORM THAT PROMPTED THE TORNADO
WARNING HAS EXITED THE WARNED AREA AND THE WARNING EXPIRED.

A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 400 AM CDT MONDAY
MORNING FOR NORTHEASTERN TEXAS.

LAT...LON 3224 9547 3220 9546 3217 9546 3216 9548
      3219 9563 3236 9560 3236 9544 3228 9544
TIME...MOT...LOC 0259Z 277DEG 33KT 3225 9536

$$


CAVANAUGH

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, 7:35 PM CDT, 2 hours 11 minutes earlier.

Area forecast discussion, Oct 24, 7:35 PM CDT, 2 hours 11 minutes before

AREA FORECAST DISCUSSION...UPDATED
NATIONAL WEATHER SERVICE FORT WORTH TX
735 PM CDT SUN OCT 24 2010

.UPDATE...
WILL BE CLEARING SOME OF THE COUNTIES FROM THE WESTERN EXTENT OF
WW707. HAVE ADJUSTED POPS AND WEATHER GRIDS ACCORDINGLY.

82/JLD

&&

.AVIATION...
DRYLINE HAS PUSHED THROUGH THE METROPLEX WITH SOUTHWEST WINDS
PREVAILING. THE DRYLINE WILL NOT CROSS KACT BUT THE WINDS WILL
SHIFT TO THE SOUTHWEST IN THE NEXT HOUR OR TWO. SOUTH-SOUTHWEST
TO SOUTHWEST WINDS WILL PREVAIL ACROSS THE REGION OVERNIGHT.
CROSSWIND PROBLEMS ARE LIKELY TO OCCUR MONDAY AFTERNOON WITH THE
SPEEDS INCREASING TO 20G30KT.

82/JLD

&&

.PREV UPDATE...
.UPDATE...
ADDED DELTA...FANNIN...AND LAMAR TO TORNADO WATCH 707. UPDATED
PRODUCTS WILL BE OUT SHORTLY.

82/JLD

&&

.PREV DISCUSSION... /ISSUED 341 PM CDT SUN OCT 24 2010/

THROUGH TONIGHT...

TORNADO WATCH NUMBER 707 IS IN EFFECT FOR AREAS ALONG A DFW TO
HILLSBORO TO KILLEEN LINE WHERE SOME ENHANCED CUMULUS HAS
DEVELOPED BASED ON 1930Z VISIBLE SATELLITE IMAGERY. JUST EAST OF
THIS AREA OF ENHANCED CUMULUS LOCALLY CALCULATED PARAMETERS
INDICATE AN ENVIRONMENT WITH 2500 J/GK OF MIXED LAYER CAPE AND 0-6
KM BULK SHEAR OF 45 KTS. IF STORMS ARE ABLE TO DEVELOP ALONG THIS
LINE THERE IS A GOOD CHANCE THAT THEY WILL QUICKLY EVOLVE INTO
SUPERCELLS CAPABLE OF PRODUCING VERY LARGE HAIL AND DAMAGING
OUTFLOW WINDS. LOW LEVEL WINDS REMAIN VEERED OUT OF THE SOUTHWEST
AHEAD OF THIS LINE...AND DEW POINT DEPRESSIONS ARE ON THE ORDER OF
15 TO 20 DEG F...SO THE TORNADO POTENTIAL IS NOT HIGH.
HOWEVER...SUPERCELLS ARE LARGE AND STRONG ENOUGH FEATURES TO HAVE
A SUBSTANTIAL IMPACT ON THE LOW LEVEL ENVIRONMENT...SO ISOLATED
TORNADOES CANNOT BE RULED OUT.

THE SHORTWAVE TROUGH THAT IS CURRENTLY MOVING OVER THE FORECAST
AREA IS EXPECTED TO PROVIDE LARGE SCALE FORCING FOR ASCENT OVER
THE EASTERN HALF OF THE CWA THRU THE REMAINDER OF THE AFTERNOON
HRS. THIS FEATURE IS EXPECTED TO MOVE OFF TO THE EAST BY 03Z AND
LARGE SCALE FORCING FOR SUBSIDENCE IS EXPECTED TO MOVE OVER THE
AREA IN ITS WAKE. EXPECT THAT WHATEVER TSTM ACTIVITY DEVELOPS WILL
EITHER MOVE OFF QUICKLY TO THE NORTHEAST OR DISSIPATE A COUPLE OF
HOURS AFTER SUNSET.

ON MONDAY...A VERY POWERFUL UPPER LEVEL LOW PRESSURE SYSTEM WILL
MOVE INTO THE CENTRAL PLAINS BY MONDAY AFTERNOON. THE GFS FORECAST
FOR H500 HEIGHTS RANKS AS 3 STANDARD DEVIATIONS BELOW NORMAL BASED
ON HPC/S STANDARDIZED ANOMALIES PAGE. THIS WILL LEAD TO DEEP/RAPID
CYCLOGENESIS NEAR THE SURFACE ACROSS THE CENTRAL AND NORTHERN
PLAINS STATES. OVER THE SOUTHERN PLAINS THE RAPIDLY DEEPENING
CYCLONE WILL INCREASE THE PRESSURE GRADIENT ACROSS THE REGION
BRINGING SOUTHWESTERLY WINDS UP TO 20 TO 25 MPH WITH GUSTS TO 35
MPH MONDAY AFTERNOON. WILL HAVE TO MONITOR FOR POTENTIAL WIND
ADVISORY CRITERIA MONDAY AFTERNOON...HOWEVER THIS WOULD BE MORE OF
A CONCERN IF THE DEEPENING CYCLONE WERE A LITTLE CLOSER TO THE
SOUTHERN PLAINS. THE BIGGEST CONCERN APPEARS TO BE FIRE WEATHER
FOR MONDAY AFTERNOON. THE DRYLINE IS EXPECTED TO REMAIN NEARLY
STATIONARY BY TOMORROW AFTERNOON. THE DRYLINE IS EXPECTED TO
REMAIN ORIENTED ALONG A DFW TO KILLEEN LINE. WEST OF THE DRYLINE
AFTERNOON RH VALUES ARE EXPECTED TO DIP BELOW 30 PERCENT. LOW
AFTERNOON RH VALUES COMBINED WITH STRONG SOUTHERLY WINDS WILL
CREATE HIGH OR VERY HIGH FIRE DANGER CONDITIONS FOR LOCATIONS
PRIMARILY WEST OF INTERSTATE 35 TOMORROW AFTERNOON. DUE TO RECENT
RAINFALL...FUELS ARE NOT EXPECTED TO BURN EASILY...THEREFORE NO
FIRE WEATHER WATCH OR WARNING WILL BE ISSUED WITH THIS FORECAST
PACKAGE.

EAST OF THE DRYLINE...DEW POINTS ARE EXPECTED TO REMAIN IN THE
LOWER TO MID 60S. THUNDERSTORMS ARE NOT EXPECTED LARGELY BECAUSE
OF WARM AIR IN THE MID TO UPPER LEVELS OF THE TROPOSPHERE
PROVIDING A STOUT CAP FOR ANY POTENTIAL TSTM INITIATION. BECAUSE
OF THE LOW LEVEL MOISTURE REMAINING IN PLACE FIRE DANGER WILL BE
LOWER EAST OF THE DRYLINE DESPITE SIMILAR LOW LEVEL WIND
INTENSITY.

MONDAY NIGHT...AS THE POWERFUL UPPER LEVEL LOW PRESSURE SYSTEM
MOVES NORTHEAST OUT OF THE PLAINS IT WILL SEND A STRONG COLD FRONT
SOUTH THRU THE SOUTHERN PLAINS. THIS FRONT LOOKS TO MOVE THRU MUCH
OF NORTH TX JUST BEFORE SUNRISE TUESDAY MORNING. MAINTAINED LOW
CHANCE FOR THUNDERSTORMS IN FAR NORTHEAST CORNER OF THE CWA WHERE
BETTER LOW LVL MOISTURE WITH SOME MEAGER UPPER LVL SUPPORT EXISTS.
OTHERWISE THE FRONT IS EXPECTED TO MOVE THRU THE AREA WITHOUT
CAUSING MUCH IN THE WAY OF PRECIPITATION TO DEVELOP.

REMAINDER OF THE WEEK...REST OF THE FORECAST REMAINS ON TRACK.
WEAK FRONTAL BOUNDARY CONTINUES TO LOOK LIKE IT WILL MOVE SOUTH
THRU THE REGION WEDNESDAY NIGHT. WITH MOST OF THE LOW LVL MOISTURE
SCOURED OUT SOUTH OF THE REGION DUE TO MONDAY NIGHT/S COLD
FRONT...ONLY A FEW RAIN SHOWERS ARE EXPECTED TO DEVELOP WEDNESDAY
NIGHT AS THIS FRONT MOVES THRU THE AREA. OTHERWISE THE REMAINDER
OF THE FORECAST REMAINS DRY WITHOUT ANY LARGE STORM SYSTEMS
PROGGED TO MOVE INTO THE REGION.

CAVANAUGH

&&

.PRELIMINARY POINT TEMPS/POPS...
DALLAS-FT. WORTH, TX  64  90  57  79  57 /  10   5  10   5   5
WACO, TX              66  90  61  83  56 /  10   5   5   5   5
PARIS, TX             61  88  58  77  53 /  30   5  20  10   5
DENTON, TX            59  88  53  78  53 /  10   5  10   5   5
MCKINNEY, TX          58  87  54  77  53 /  10   5  10   5   5
DALLAS, TX            64  89  60  78  58 /  10   5  10   5   5
TERRELL, TX           64  88  60  80  54 /  20   5  10  10   5
CORSICANA, TX         66  87  63  83  57 /  20   5  10   5   5
TEMPLE, TX            66  88  64  84  57 /  20   5   5   5   5
MINERAL WELLS, TX     54  91  52  79  54 /  10   5   5   5   5

&&

.FWD WATCHES/WARNINGS/ADVISORIES...
NONE.

&&

58/82

Hazardous weather outlook, Oct 24, 2:45 PM CDT, 7 hours 1 minute 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, 7:33 PM CDT, 2 hours 13 minutes before

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

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

0727 PM     TSTM WND GST     CAYUGA                  31.95N  95.97W
10/24/2010  E70 MPH          ANDERSON           TX   EMERGENCY MNGR

            60 TO 70 MPH WIND GUST REPORTED IN THE BETHANY-CAYUGA
            AREA

Local storm report, Oct 24, 7:39 PM CDT, 2 hours 7 minutes before

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

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

0733 PM     HAIL             BOIS D ARC              31.95N  95.75W
10/24/2010  E1.00 INCH       ANDERSON           TX   TRAINED SPOTTER

            QUARTER SIZE HAIL REPORTED AT ACR 460 AND FM 860

Local storm report, Oct 24, 7:44 PM CDT, 2 hours 2 minutes before

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

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

0741 PM     HAIL             BRADFORD                31.98N  95.77W
10/24/2010  E1.75 INCH       ANDERSON           TX   EMERGENCY MNGR

            GOLFBALL HAIL IN BRADFORD

Local storm report, Oct 24, 8:04 PM CDT, 1 hour 42 minutes before

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

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

0801 PM     HAIL             4 N BRUSHY CREEK        32.01N  95.67W
10/24/2010  E1.00 INCH       ANDERSON           TX   EMERGENCY MNGR

            QUARTER HAIL NEAR FOSTERVILLE

Local storm report, Oct 24, 8:15 PM CDT, 1 hour 31 minutes before

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

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

0812 PM     HAIL             2 S FRANKSTON           32.02N  95.50W
10/24/2010  E1.75 INCH       ANDERSON           TX   TRAINED SPOTTER

            SPOTTER REPORTS GOLFBALL HAIL 2 MILES SOUTH OF FRANKSTON
            ON HWY 155

Local storm report, Oct 24, 8:26 PM CDT, 1 hour 20 minutes before

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

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

0823 PM     HAIL             BERRYVILLE              32.09N  95.47W
10/24/2010  E0.88 INCH       HENDERSON          TX   UNKNOWN

            WFO SHV RELAYED A REPORT OF NICKEL HAIL IN BERRYVILLE

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, 7:20 PM CDT	Tornado Warning	FWD	Anderson, Henderson	40 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 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.