Alert archive / Texas / Severe Thunderstorm Warnings in 2007

Severe Thunderstorm Warning 271, NWS Fort Worth, TX

June 4, 2007Van Zandt County, Texas

NWS Fort Worth, TX issued this severe thunderstorm warning at Jun 4, 2007, 4:57 PM CDT for Van Zandt County, Texas. It was in force for 63 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: Jun 4, 2007, 4:57 PM CDT (21:57 UTC)
Expired: Jun 4, 2007, 6:00 PM CDT
In force: 63 min
Issued by: NWS Fort Worth, TX
Area: Counties, with a storm outline in the text

County Van Zandt County, TX

The radar

The Dallas/Ft Worth radar (KFWS), 137 km from the middle of the area, began a volume at 21:59 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, 10.0 hours before the alert went out and 139 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: 225 J/kg
Mixed-layer CIN: -102 J/kg
Mixed-layer LCL: 1669 m above ground
0-6 km bulk shear: 15 kt
0-1 km storm-relative helicity: -10 m²/s²
0-3 km storm-relative helicity: -10 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 Jun 4, 3:29 PM CDT, 1 hour 28 minutes earlier.

Area forecast discussion, Jun 4, 3:29 PM CDT, 1 hour 28 minutes before

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Hazardous weather outlook, Jun 4, 4:19 PM CDT, 38 minutes before

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In the hours before

Local storm report, Jun 4, 4:24 PM CDT, 33 minutes before

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Special weather statement, Jun 4, 4:30 PM CDT, 27 minutes before

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Special weather statement, Jun 4, 4:34 PM CDT, 23 minutes before

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Special weather statement, Jun 4, 4:42 PM CDT, 15 minutes before

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Special weather statement, Jun 4, 4:49 PM CDT, 8 minutes before

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Special weather statement, Jun 4, 4:57 PM CDT, 0 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
Jun 3, 7:10 PM CDT	Severe Thunderstorm Warning	FWD	Bell	51 min
Jun 4, 1:35 PM CDT	Special Weather Statement	FWD	Burnet	25 min
Jun 4, 2:03 PM CDT	Special Weather Statement	FWD	Lampasas	57 min
Jun 4, 2:20 PM CDT	Special Weather Statement	FWD	Collin, Denton	55 min
Jun 4, 2:26 PM CDT	Special Weather Statement	FWD	Rains	34 min
Jun 4, 2:43 PM CDT	Severe Thunderstorm Warning	FWD	Lampasas	25 min
Jun 4, 2:47 PM CDT	Special Weather Statement	FWD	Tarrant	28 min
Jun 4, 2:52 PM CDT	Severe Thunderstorm Warning	FWD	Dallas, Denton	53 min
Jun 4, 3:05 PM CDT	Special Weather Statement	FWD	Robertson	25 min
Jun 4, 3:15 PM CDT	Special Weather Statement	FWD	Collin, Kaufman, Rockwall	60 min
Jun 4, 3:26 PM CDT	Severe Thunderstorm Warning	FWD	Tarrant	34 min
Jun 4, 3:34 PM CDT	Special Weather Statement	FWD	Rains	26 min
Jun 4, 3:42 PM CDT	Severe Thunderstorm Warning	FWD	Dallas	63 min
Jun 4, 3:46 PM CDT	Severe Thunderstorm Warning	FWD	Collin, Rockwall	59 min
Jun 4, 3:50 PM CDT	Severe Thunderstorm Warning	FWD	Hunt, Rains	55 min
Jun 4, 3:56 PM CDT	Special Weather Statement	FWD	Milam	34 min
Jun 4, 4:14 PM CDT	Severe Thunderstorm Warning	FWD	Milam	46 min
Jun 4, 4:20 PM CDT	Severe Thunderstorm Warning	FWD	Kaufman	55 min
Jun 4, 4:23 PM CDT	Special Weather Statement	FWD	Fannin	67 min
Jun 4, 4:30 PM CDT	Special Weather Statement	FWD	Ellis	30 min
Jun 4, 4:34 PM CDT	Special Weather Statement	FWD	Hopkins	26 min
Jun 4, 4:42 PM CDT	Special Weather Statement	FWD	Delta	33 min
Jun 4, 4:49 PM CDT	Special Weather Statement	FWD	Robertson	56 min
Jun 4, 4:57 PM CDT	Special Weather Statement	FWD	Montague	33 min
Jun 4, 5:00 PM CDT	Severe Thunderstorm Warning	FWD	Milam, Robertson	45 min
Jun 4, 5:05 PM CDT	Special Weather Statement	FWD	Johnson	25 min
Jun 4, 5:09 PM CDT	Severe Thunderstorm Warning	FWD	Dallas, Tarrant	36 min
Jun 4, 5:18 PM CDT	Special Weather Statement	FWD	Grayson	27 min
Jun 4, 5:25 PM CDT	Special Weather Statement	FWD	Ellis	35 min
Jun 4, 5:33 PM CDT	Severe Thunderstorm Warning	FWD	Ellis, Johnson	57 min
Jun 4, 5:48 PM CDT	Special Weather Statement	FWD	Grayson	27 min
Jun 4, 5:58 PM CDT	Special Weather Statement	FWD	Cooke	62 min
Jun 4, 6:32 PM CDT	Special Weather Statement	FWD	Navarro	28 min
Jun 4, 6:34 PM CDT	Special Weather Statement	FWD	Denton	26 min
Jun 4, 6:37 PM CDT	Special Weather Statement	FWD	Jack	23 min

Nearby

Severe Thunderstorm Warnings in Texas, 2007 Every severe thunderstorm warning in 2007

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.