Alert archive / Texas / Severe Thunderstorm Warnings in 2010

Severe Thunderstorm Warning 239, NWS Fort Worth, TX

October 24, 2010Collin County, Fannin County, Hunt County, Texas

NWS Fort Worth, TX issued this severe thunderstorm warning at Oct 24, 2010, 4:35 PM CDT for Collin County, Fannin County, Hunt County, Texas. It was in force for 70 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, 4:35 PM CDT (21:35 UTC)
Expired
Oct 24, 2010, 5:45 PM CDT
In force
70 min
Issued by
NWS Fort Worth, TX
Area
Storm-based polygon

Counties Collin County, TX, Fannin County, TX, Hunt County, TX

The radar

The Dallas/Ft Worth radar (KFWS), 127 km from the middle of the area, began a volume at 21:35 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 24, 1:51 PM CDTTornado WatchSPC8 hr

The nearest sounding before it

Fort Worth, TX (KFWD), launched 12:00Z, 9.6 hours before the alert went out and 110 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 2010-10-24Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1182 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Fort Worth, TX at 12:00Z on 2010-10-24The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 221 square meters per square second.19395878Sfc1 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
1182 J/kg
Mixed-layer CIN
-88 J/kg
Mixed-layer LCL
648 m above ground
0-6 km bulk shear
43 kt
0-1 km storm-relative helicity
221 m²/s²
0-3 km storm-relative helicity
241 m²/s²
Significant tornado parameter
0.9
Supercell composite
6.5

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 Oct 24, 3:41 PM CDT, 54 minutes earlier.

Area forecast discussion, Oct 24, 3:41 PM CDT, 54 minutes before
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Hazardous weather outlook, Oct 24, 2:45 PM CDT, 1 hour 50 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

Special weather statement, Oct 24, 1:30 PM CDT, 3 hours 5 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE FORT WORTH TX
130 PM CDT SUN OCT 24 2010

TXZ107-122-123-241900-
HOPKINS TX-RAINS TX-VAN ZANDT TX-
130 PM CDT SUN OCT 24 2010

...SIGNIFICANT WEATHER ADVISORY FOR...
  SOUTHWESTERN HOPKINS COUNTY
  RAINS COUNTY
  NORTH CENTRAL VAN ZANDT COUNTY

AT 129 PM CDT...NATIONAL WEATHER SERVICE METEOROLOGISTS DETECTED A
STRONG THUNDERSTORM 6 MILES NORTHEAST OF WILLS POINT...MOVING
NORTHEAST AT 25 MPH.

CITIES IN THE PATH OF THIS STORM INCLUDE COMO...EAST TAWAKONI...
EDGEWOOD...EMORY...SULPHUR SPRINGS AND LAKE TAWAKONI STATE PARK.

PENNY-SIZED HAIL AND WIND GUSTS TO 40 MPH CAN BE EXPECTED FROM THIS
STORM.

LAT...LON 3296 9565 3278 9563 3265 9590 3280 9604
      3285 9599 3286 9594 3288 9596 3321 9561
      3297 9537
TIME...MOT...LOC 1829Z 229DEG 22KT 3278 9589
Local storm report, Oct 24, 2:01 PM CDT, 2 hours 34 minutes before
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Local storm report, Oct 24, 2:09 PM CDT, 2 hours 26 minutes before
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Local storm report, Oct 24, 2:35 PM CDT, 2 hours before
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Local storm report, Oct 24, 3:27 PM CDT, 1 hour 8 minutes before
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Special weather statement, Oct 24, 3:55 PM CDT, 40 minutes before
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The office that day

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

IssuedProductOfficeCountiesLasted
Oct 24, 1:30 PM CDTSpecial Weather StatementFWDHopkins, Rains30 min
Oct 24, 1:37 PM CDTSevere Thunderstorm WarningFWDHopkins, Rains53 min
Oct 24, 2:23 PM CDTSevere Thunderstorm WarningFWDHopkins27 min
Oct 24, 3:55 PM CDTSpecial Weather StatementFWDCollin35 min
Oct 24, 4:02 PM CDTSevere Thunderstorm WarningFWDCollin58 min
Oct 24, 4:41 PM CDTSpecial Weather StatementFWDHopkins34 min
Oct 24, 4:48 PM CDTSpecial Weather StatementFWDBell27 min
Oct 24, 4:55 PM CDTSevere Thunderstorm WarningFWDDelta, Hopkins, Lamar20 min
Oct 24, 4:58 PM CDTSevere Thunderstorm WarningFWDFalls, McLennan62 min
Oct 24, 5:04 PM CDTSevere Thunderstorm WarningFWDEllis, Navarro56 min
Oct 24, 5:19 PM CDTSevere Thunderstorm WarningFWDDelta, Hopkins, Hunt, Lamar71 min
Oct 24, 5:25 PM CDTSevere Thunderstorm WarningFWDHunt50 min
Oct 24, 5:38 PM CDTTornado WarningFWDDelta, Hopkins52 min
Oct 24, 5:40 PM CDTTornado WarningFWDEllis, Navarro40 min
Oct 24, 5:45 PM CDTTornado WarningFWDFalls, Limestone45 min
Oct 24, 5:53 PM CDTTornado WarningFWDHopkins, Hunt, Rains37 min
Oct 24, 6:12 PM CDTSevere Thunderstorm WarningFWDNavarro63 min
Oct 24, 6:19 PM CDTSevere Thunderstorm WarningFWDHenderson, Kaufman, Van Zandt86 min
Oct 24, 6:23 PM CDTTornado WarningFWDHopkins37 min
Oct 24, 6:25 PM CDTTornado WarningFWDRains35 min
Oct 24, 6:31 PM CDTTornado WarningFWDNavarro33 min
Oct 24, 6:36 PM CDTSevere Thunderstorm WarningFWDRains, Van Zandt19 min
Oct 24, 6:55 PM CDTSevere Thunderstorm WarningFWDHopkins65 min

Nearby

Severe Thunderstorm Warnings in Texas, 2010Every severe thunderstorm warning 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.