Alert archive / Texas / Severe Thunderstorm Warnings in 2004

Severe Thunderstorm Warning 329, NWS Fort Worth, TX

July 28, 2004Denton County, Tarrant County, Texas

NWS Fort Worth, TX issued this severe thunderstorm warning at Jul 28, 2004, 4:26 PM CDT for Denton County, Tarrant County, Texas. It was in force for 64 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: Jul 28, 2004, 4:26 PM CDT (21:26 UTC)
Expired: Jul 28, 2004, 5:30 PM CDT
In force: 64 min
Issued by: NWS Fort Worth, TX
Area: Counties, with a storm outline in the text

Counties Denton County, TX, Tarrant County, TX

The radar

The Dallas/Ft Worth radar (KFWS), 47 km from the middle of the area, began a volume at 21:25 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, 9.4 hours before the alert went out and 19 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: 3 J/kg
Mixed-layer CIN: -118 J/kg
Mixed-layer LCL: 904 m above ground
0-6 km bulk shear: 25 kt
0-1 km storm-relative helicity: 90 m²/s²
0-3 km storm-relative helicity: 135 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.1

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 Jul 28, 2:16 PM CDT, 2 hours 10 minutes earlier.

Area forecast discussion, Jul 28, 2:16 PM CDT, 2 hours 10 minutes before

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Hazardous weather outlook, Jul 28, 3:45 PM CDT, 41 minutes before

HAZARDOUS WEATHER OUTLOOK FOR NORTH TEXAS
NATIONAL WEATHER SERVICE FORT WORTH TX
345 PM CDT WED JUL 28 2004

TXZ091>095-100>107-115>123-129>135-141>148-156>162-174-175-291100-
ANDERSON-BELL-BOSQUE-COLLIN-COMANCHE-COOKE-CORYELL-DALLAS-DELTA-
DENTON-EASTLAND-ELLIS-ERATH-FALLS-FANNIN-FREESTONE-GRAYSON-HAMILTON-
HENDERSON-HILL-HOOD-HOPKINS-HUNT-JACK-JOHNSON-KAUFMAN-LAMAR-LAMPASAS-
LEON-LIMESTONE-MCLENNAN-MILAM-MILLS-MONTAGUE-NAVARRO-PALO PINTO-
PARKER-RAINS-ROBERTSON-ROCKWALL-SOMERVELL-STEPHENS-TARRANT-VAN ZANDT-
WISE-YOUNG-
345 PM CDT WED JUL 28 2004

THIS HAZARDOUS WEATHER OUTLOOK IS FOR NORTH TEXAS.

.DAY ONE...
...FLOOD WATCH THROUGH TONIGHT ALONG AND NORTHWEST OF AN EASTLAND...
TO WEATHERFORD...TO ROCKWALL...TO SHERMAN LINE...

THERE IS A CHANCE OF THUNDERSTORMS OVERNIGHT FOR ALL OF NORTH
TEXAS...WITH THUNDERSTORMS LIKELY ALONG AND NORTH OF INTERSTATE 20.
HEAVY RAIN AND CLOUD TO GROUND LIGHTNING WILL BE THE MAIN WEATHER
HAZARDS. A FEW STORMS THIS EVENING MAY PRODUCE WIND GUSTS OF
40 TO 50 MPH.

.DAYS TWO THROUGH SEVEN...
THUNDERSTORMS ARE LIKELY THURSDAY. LOCALLY HEAVY RAIN AND CLOUD
TO GROUND LIGHTNING WILL BE THE MAIN WEATHER HAZARDOUS. THUNDERSTORM
CHANCES WILL DECREASE THURSDAY NIGHT...BUT WILL BE REMAIN AT LEAST
A SLIGHT CHANCE OF THUNDERSTORMS THROUGH SUNDAY. LIGHTNING WILL BE
THE MAIN WEATHER HAZARD FROM THESE STORMS.

.SPOTTER CALL TO ACTION STATEMENT...
SPOTTER ACTIVATION MAY BE REQUESTED THROUGH THURSDAY MORNING FOR
RAINFALL OR FLOODING REPORTS.

In the hours before

Special weather statement, Jul 28, 2:26 PM CDT, 2 hours before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE FORT WORTH TX
226 PM CDT WED JUL 28 2004

TXZ101-102-282015-
JACK-WISE-
226 PM CDT WED JUL 28 2004

...SIGNIFICANT WEATHER UPDATE...

AT 226 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR SHOWED A LINE
OF STRONG THUNDERSTORMS...EXTENDING FROM CUNDIFF...TO THE WESTERN
SHORES OF LAKE BRIDGEPORT...TO PERRIN. THIS LINE OF STORMS IS MOVING
NORTHEAST AT 30 MPH...AND WILL BE MOVING INTO AN INCREASINGLY
UNSTABLE AIRMASS OVER THE NEXT HOUR.

AT THIS TIME...PEA-SIZED HAIL AND WIND GUSTS BETWEEN 40 AND 50 MPH
CAN BE EXPECTED FROM THIS LINE OF STORMS...ALONG WITH FREQUENT CLOUD
TO GROUND LIGHTNING STRIKES AND HEAVY RAINFALL.

ALVORD...BOYD...BRIDGEPORT...CHICO...DECATUR AND VINEYARD ARE
COMMUNITIES IN THE PATH OF THIS STORM.

65/DD

Special weather statement, Jul 28, 3:34 PM CDT, 52 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE FORT WORTH TX
334 PM CDT WED JUL 28 2004

TXZ103-282130-
DENTON-
334 PM CDT WED JUL 28 2004

...SIGNIFICANT WEATHER UPDATE...

AT 334 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR DETECTED A
LINE OF STRONG THUNDERSTORMS...FROM 7 MILES NORTHWEST OF KRUM TO 6
MILES NORTHWEST OF JUSTIN TO 4 MILES NORTHEAST OF PECAN ACRES...OR
ALONG A LINE EXTENDING FROM 8 MILES WEST OF SANGER TO 13 MILES WEST
OF DENTON TO 7 MILES NORTH OF EAGLE MOUNTAIN...MOVING EAST AT 25 MPH.

AT THIS TIME...PEA-SIZED HAIL AND WIND GUSTS BETWEEN 30 AND 40 MPH
CAN BE EXPECTED FROM THIS LINE OF STORMS...ALONG WITH FREQUENT CLOUD
TO GROUND LIGHTNING STRIKES AND HEAVY RAINFALL.

ARGYLE...AUBREY...BARTONVILLE...COPPER CANYON...CORINTH...DENTON...
DOUBLE OAK...FLOWER MOUND...HICKORY CREEK...HIGHLAND VILLAGE...
JUSTIN...KRUGERVILLE...KRUM...LAKE DALLAS...LEWISVILLE...LITTLE
ELM...PILOT POINT...SANGER...SHADY SHORES AND THE COLONY ARE IN THE
PATH OF THIS STORM.

65/DD

The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 28, 8:31 AM CDT	Flash Flood Warning	FWD	Young	3 hr
Jul 28, 11:25 AM CDT	Flash Flood Warning	FWD	Young	3 hr
Jul 28, 1:59 PM CDT	Severe Thunderstorm Warning	FWD	Jack	46 min
Jul 28, 6:48 PM CDT	Flash Flood Warning	FWD	Tarrant	117 min
Jul 28, 6:54 PM CDT	Severe Thunderstorm Warning	FWD	Dallas	51 min

Nearby

Severe Thunderstorm Warnings in Texas, 2004 Every severe thunderstorm warning in 2004

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.