Alert archive / Texas / Flash Flood Warnings in 2008

Flash Flood Warning 51, NWS Fort Worth, TX

June 25, 2008Collin County, Texas

NWS Fort Worth, TX issued this flash flood warning at Jun 25, 2008, 9:41 PM CDT for Collin County, Texas. It was in force for 95 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 25, 2008, 9:41 PM CDT (02:41 UTC)
Expired: Jun 25, 2008, 11:16 PM CDT
In force: 95 min
Issued by: NWS Fort Worth, TX
Area: Storm-based polygon
Flood severity: None

County Collin County, TX

The radar

The Dallas/Ft Worth radar (KFWS), 97 km from the middle of the area, began a volume at 02:40 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 00:00Z, 2.7 hours before the alert went out and 78 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: 1225 J/kg
Mixed-layer CIN: -5 J/kg
Mixed-layer LCL: 2226 m above ground
0-6 km bulk shear: 10 kt
0-1 km storm-relative helicity: -24 m²/s²
0-3 km storm-relative helicity: 7 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 flash flood 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 flash flood warning went out at Jun 25, 9:31 PM CDT, 10 minutes earlier.

Area forecast discussion, Jun 25, 9:31 PM CDT, 10 minutes before

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Hazardous weather outlook, Jun 25, 3:16 PM CDT, 6 hours 25 minutes before

HAZARDOUS WEATHER OUTLOOK FOR NORTH TEXAS...UPDATED
NATIONAL WEATHER SERVICE FORT WORTH TX
316 PM CDT WED JUN 25 2008

TXZ091>095-100>107-115>123-129>135-141>148-156>162-174-175-261100-
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-
316 PM CDT WED JUN 25 2008

THIS HAZARDOUS WEATHER OUTLOOK IS FOR NORTH TEXAS.

.DAY ONE...THIS AFTERNOON AND TONIGHT.
WIDELY SCATTERED THUNDERSTORMS...A FEW WILL REACH STRONG TO SEVERE
LIMITED THROUGH SUNSET STRONG WITH GUSTY DOWNBURST WINDS...HEAVY
DOWNPOURS...AND CLOUD-TO-GROUND LIGHTNING. SMALL HAIL WILL BE
POSSIBLE AS WELL...AS A WEAK UPPER LEVEL DISTURBANCE DRIFTS ACROSS
WEST-CENTRAL TEXAS. STORMS WILL BE MOST NUMEROUS ACROSS FAR WESTERN
AND SOUTHEAST SECTIONS OF NORTH TEXAS DURING THIS TIME.

ISOLATED THUNDERSTORMS WILL REMAIN POSSIBLE NEAR THE RED RIVER AND
OVER FAR EASTERN NORTH TEXAS THE REMAINDER OF THE OVERNIGHT.
SEVERE WEATHER IS NOT ANTICIPATED.

.DAYS TWO THROUGH SEVEN...THURSDAY THROUGH TUESDAY.
WIDELY SCATTERED THUNDERSTORMS ARE POSSIBLE ACROSS FAR EASTERN
PARTS OF NORTH TEXAS THURSDAY AND THURSDAY EVENING.

WIDELY SCATTERED THUNDERSTORMS ARE EXPECTED OVER SOUTHEAST PARTS
OF NORTH TEXAS BOTH FRIDAY AND SATURDAY...MAINLY IN THE AFTERNOON
AND EARLY EVENING HOURS.

A SLIGHT CHANCE OF THUNDERSTORMS WILL LINGER ACROSS NAMELY THE
EASTERN HALF OF NORTH TEXAS SUNDAY AND MONDAY. NO ORGANIZED SEVERE
WEATHER IS EXPECTED DURING THE EXTENDED PERIOD.

.SPOTTER INFORMATION STATEMENT...
LIMITED SPOTTER ACTIVATION MAY BE NEEDED THROUGH SUNSET FOR
ISOLATED...STRONG STORMS CONTAINING DOWNBURSTS WITH VERY GUSTY WINDS.

05/

In the hours before

Local storm report, Jun 25, 9:06 PM CDT, 35 minutes before

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Local storm report, Jun 25, 9:15 PM CDT, 26 minutes before

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Special weather statement, Jun 25, 9:17 PM CDT, 24 minutes before

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Special weather statement, Jun 25, 9:22 PM CDT, 19 minutes before

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Local storm report, Jun 25, 9:32 PM CDT, 9 minutes before

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Special weather statement, Jun 25, 9:34 PM CDT, 7 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 25, 8:04 PM CDT	Special Weather Statement	FWD	Tarrant	26 min
Jun 25, 8:13 PM CDT	Special Weather Statement	FWD	Collin	32 min
Jun 25, 8:28 PM CDT	Severe Thunderstorm Warning	FWD	Tarrant	62 min
Jun 25, 8:40 PM CDT	Areal Flood Advisory	FWD	Tarrant	2 hr
Jun 25, 8:57 PM CDT	Areal Flood Advisory	FWD	Collin	2 hr
Jun 25, 8:59 PM CDT	Flash Flood Warning	FWD	Tarrant	2 hr
Jun 25, 9:17 PM CDT	Special Weather Statement	FWD	Johnson	28 min
Jun 25, 9:22 PM CDT	Special Weather Statement	FWD	Dallas	53 min
Jun 25, 9:29 PM CDT	Severe Thunderstorm Warning	FWD	Tarrant	12 min
Jun 25, 9:34 PM CDT	Special Weather Statement	FWD	Dallas	26 min
Jun 25, 9:49 PM CDT	Special Weather Statement	FWD	Collin	26 min
Jun 25, 9:57 PM CDT	Severe Thunderstorm Warning	FWD	Collin	27 min
Jun 25, 10:32 PM CDT	Areal Flood Advisory	FWD	Hamilton	118 min
Jun 26, 12:29 AM CDT	Areal Flood Advisory	FWD	Mills	3 hr
Jun 26, 1:08 AM CDT	Areal Flood Advisory	FWD	Hamilton	3 hr

Nearby

Flash Flood Warnings in Texas, 2008 Every flash flood 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.