Alert archive / Texas / Severe Thunderstorm Warnings in 2008

Severe Thunderstorm Warning 294, NWS Fort Worth, TX

May 13, 2008Dallas County, Texas

NWS Fort Worth, TX issued this severe thunderstorm warning at May 13, 2008, 1:52 PM CDT for Dallas County, Texas. It was in force for 34 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: May 13, 2008, 1:52 PM CDT (18:52 UTC)
Expired: May 13, 2008, 2:26 PM CDT
In force: 34 min
Issued by: NWS Fort Worth, TX
Area: Storm-based polygon

County Dallas County, TX

The radar

The Dallas/Ft Worth radar (KFWS), 54 km from the middle of the area, began a volume at 18:55 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

Norman, OK (KOUN), launched 12:00Z, 6.9 hours before the alert went out and 279 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: 847 J/kg
Mixed-layer CIN: -518 J/kg
Mixed-layer LCL: 564 m above ground
0-6 km bulk shear: 34 kt
0-1 km storm-relative helicity: 636 m²/s²
0-3 km storm-relative helicity: 580 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 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 May 13, 11:14 AM CDT, 2 hours 38 minutes earlier.

Area forecast discussion, May 13, 11:14 AM CDT, 2 hours 38 minutes before

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Hazardous weather outlook, May 13, 11:55 AM CDT, 1 hour 57 minutes before

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In the hours before

Special weather statement, May 13, 8:50 AM CDT, 5 hours 2 minutes before

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Special weather statement, May 13, 9:19 AM CDT, 4 hours 33 minutes before

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Special weather statement, May 13, 9:44 AM CDT, 4 hours 8 minutes before

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Special weather statement, May 13, 1:17 PM CDT, 35 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE FORT WORTH TX
117 PM CDT TUE MAY 13 2008

TXZ133-131845-
JOHNSON TX-
117 PM CDT TUE MAY 13 2008

...SIGNIFICANT WEATHER ADVISORY FOR...
  JOHNSON COUNTY

AT 117 PM CDT...NATIONAL WEATHER SERVICE METEOROLOGISTS DETECTED A
STRONG THUNDERSTORM 10 MILES SOUTH OF CLEBURNE...MOVING NORTHEAST AT
52 MPH.

CITIES IN THE PATH OF THIS STORM INCLUDE ALVARADO...CLEBURNE...
GRANDVIEW...KEENE AND VENUS.

DIME SIZE HAIL AND WIND GUSTS TO 50 MPH CAN BE EXPECTED FROM THIS
STORM.

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

LAT...LON 3231 9755 3256 9710 3229 9708 3225 9716
      3226 9718 3222 9733 3221 9735 3220 9744
      3218 9748
TIME...MOT...LOC 1817Z 239DEG 45KT 3224 9737

DUNN

Special weather statement, May 13, 1:30 PM CDT, 22 minutes before

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Local storm report, May 13, 1:49 PM CDT, 3 minutes before

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The office that day

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

Issued	Product	Office	Counties	Lasted
May 13, 8:50 AM CDT	Special Weather Statement	FWD	Coryell, Lampasas	25 min
May 13, 9:19 AM CDT	Special Weather Statement	FWD	Mills	26 min
May 13, 9:24 AM CDT	Severe Thunderstorm Warning	FWD	Mills	34 min
May 13, 9:44 AM CDT	Special Weather Statement	FWD	Hamilton	31 min
May 13, 1:17 PM CDT	Special Weather Statement	FWD	Johnson	28 min
May 13, 1:27 PM CDT	Severe Thunderstorm Warning	FWD	Ellis, Johnson	48 min
May 13, 1:30 PM CDT	Special Weather Statement	FWD	Dallas	30 min
May 13, 2:00 PM CDT	Severe Thunderstorm Warning	FWD	Kaufman, Rockwall	31 min
May 13, 2:15 PM CDT	Special Weather Statement	FWD	Hunt	30 min
May 13, 4:56 PM CDT	Special Weather Statement	FWD	Henderson	34 min
May 13, 5:16 PM CDT	Severe Thunderstorm Warning	FWD	Van Zandt	29 min
May 13, 6:01 PM CDT	Special Weather Statement	FWD	Young	29 min
May 13, 6:30 PM CDT	Severe Thunderstorm Warning	FWD	Young	60 min

Nearby

Severe Thunderstorm Warnings in Texas, 2008 Every severe thunderstorm warning in 2008

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.