Alert archive / Texas / Special Weather Statements in 2011

Special Weather Statement, NWS Fort Worth, TX

August 24, 2011Hopkins County, Texas

NWS Fort Worth, TX issued this special weather statement at Aug 24, 2011, 3:02 PM CDT for Hopkins County, Texas. It was in force for 28 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: Aug 24, 2011, 3:02 PM CDT (20:02 UTC)
Expired: Aug 24, 2011, 3:30 PM CDT
In force: 28 min
Issued by: NWS Fort Worth, TX

County Hopkins County, TX

The radar

The Shreveport radar (KSHV), 169 km from the middle of the area, began a volume at 20:02 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 nearest sounding before it

Fort Worth, TX (KFWD), launched 12:00Z, 8.0 hours before the alert went out and 168 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: 414 J/kg
Mixed-layer CIN: -265 J/kg
Mixed-layer LCL: 2082 m above ground
0-6 km bulk shear: 21 kt
0-1 km storm-relative helicity: -51 m²/s²
0-3 km storm-relative helicity: -5 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.1

Open this sounding in Storm Lab

The text

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

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What forecasters said that day

The local office's own words before this special weather statement 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 special weather statement went out at Aug 24, 11:59 AM CDT, 3 hours 3 minutes earlier.

Area forecast discussion, Aug 24, 11:59 AM CDT, 3 hours 3 minutes before

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Hazardous weather outlook, Aug 24, 11:05 AM CDT, 3 hours 57 minutes before

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In the hours before

Special weather statement, Aug 24, 3:02 PM CDT, 0 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE FORT WORTH TX
302 PM CDT WED AUG 24 2011

TXZ107-242030-
HOPKINS TX-
302 PM CDT WED AUG 24 2011

...SIGNIFICANT WEATHER ADVISORY FOR...
  HOPKINS COUNTY

AT 300 PM CDT...NATIONAL WEATHER SERVICE METEOROLOGISTS DETECTED A
STRONG THUNDERSTORM 25 MILES EAST OF SULPHUR SPRINGS MOVING
SOUTHWEST AT 15 MPH.  A STRONG OUTFLOW BOUNDARY WILL MOVE INTO
HOPKINS COUNTY OVER THE NEXT 15 MINUTES.  GUSTY EAST WINDS TO 45 MPH
ARE LIKELY AS THIS OUTFLOW BOUNDARY MOVES THROUGH.

LAT...LON 3296 9531 3295 9566 3298 9567 3299 9586
      3305 9587 3337 9531 3313 9530 3297 9530
TIME...MOT...LOC 2000Z 180DEG 0KT 3276 9518

DUNN

The office that day

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

Issued	Product	Office	Counties	Lasted
Aug 23, 7:35 PM CDT	Special Weather Statement	FWD	Lamar	25 min
Aug 23, 8:02 PM CDT	Special Weather Statement	FWD	Rains	28 min
Aug 24, 3:27 PM CDT	Special Weather Statement	FWD	Hopkins, Rains, Van Zandt	33 min
Aug 24, 3:43 PM CDT	Special Weather Statement	FWD	Anderson, Henderson	32 min
Aug 24, 4:03 PM CDT	Special Weather Statement	FWD	Delta, Fannin, Hopkins, Hunt, Lamar, Rains	27 min
Aug 24, 4:14 PM CDT	Severe Thunderstorm Warning	FWD	Rains, Van Zandt	61 min
Aug 24, 4:19 PM CDT	Special Weather Statement	FWD	Anderson, Henderson	26 min
Aug 24, 4:36 PM CDT	Severe Thunderstorm Warning	FWD	Hunt	54 min
Aug 24, 5:07 PM CDT	Special Weather Statement	FWD	Kaufman	23 min
Aug 24, 5:29 PM CDT	Special Weather Statement	FWD	Kaufman	31 min
Aug 24, 5:50 PM CDT	Special Weather Statement	FWD	Collin, Dallas, Denton, Ellis, Grayson, Hill and 5 more	40 min
Aug 24, 6:30 PM CDT	Special Weather Statement	FWD	Cooke, Dallas, Denton, Ellis, Falls, Grayson and 7 more	30 min
Aug 24, 6:57 PM CDT	Special Weather Statement	FWD	Bosque, Cooke, Falls, Hood, McLennan, Milam and 4 more	63 min

Nearby

Special Weather Statements in Texas, 2011 Every special weather statement in 2011

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.