An upper level low pressure system interacted with a moist and unstable airmass over north Texas, resulting in large hail, damaging winds, and flash flooding.

Hail in TARRANT, TEXAS
From 08-MAY-07 21:05:00 to 08-MAY-07 21:05:00 (CST-6)
Location: EULESS
Magnitude: 0.75 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Amateur Radio

On the west side of DFW Airport.

Thunderstorm Wind in YOUNG, TEXAS
From 08-MAY-07 17:55:00 to 08-MAY-07 17:55:00 (CST-6)
Location: OLNEY
Magnitude: 66.00 MG
Property damage: 3.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Power lines were blown down.

Hail in TARRANT, TEXAS
From 08-MAY-07 20:50:00 to 08-MAY-07 20:50:00 (CST-6)
Location: EULESS
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Amateur Radio

Flash Flood in COOKE, TEXAS
From 07-MAY-07 10:00:00 to 07-MAY-07 12:00:00 (CST-6)
Location: GAINESVILLE
Flood cause: Heavy Rain
Property damage: 15.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Several cars were stranded in Gainesville with water halfway up their sides.  Also, Interstate 35 was closed at the Weaver Street exit due to high water.

Hail in WISE, TEXAS
From 07-MAY-07 09:06:00 to 07-MAY-07 09:06:00 (CST-6)
Location: BRIDGEPORT
Magnitude: 0.75 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Law Enforcement

Hail in COOKE, TEXAS
From 07-MAY-07 09:45:00 to 07-MAY-07 09:45:00 (CST-6)
Location: GAINESVILLE
Magnitude: 0.75 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Thunderstorm Wind in WISE, TEXAS
From 07-MAY-07 08:56:00 to 07-MAY-07 08:56:00 (CST-6)
Location: BRIDGEPORT
Magnitude: 52.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Amateur Radio

Hail in DENTON, TEXAS
From 07-MAY-07 18:17:00 to 07-MAY-07 18:17:00 (CST-6)
Location: PONDER
Magnitude: 0.88 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Amateur Radio

Thunderstorm Wind in GRAYSON, TEXAS
From 07-MAY-07 19:41:00 to 07-MAY-07 19:41:00 (CST-6)
Location: SHERMAN
Magnitude: 65.00 EG
Property damage: 20.00K
Crop damage: 0.00K
Reported by: Trained Spotter

A covered parking awning was lifted off its pillars and large limbs were blown down.

Thunderstorm Wind in GRAYSON, TEXAS
From 07-MAY-07 19:35:00 to 07-MAY-07 19:35:00 (CST-6)
Location: SHERMAN
Magnitude: 52.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Amateur Radio

Near Knollwood.

Flash Flood in TARRANT, TEXAS
From 08-MAY-07 03:15:00 to 08-MAY-07 04:30:00 (CST-6)
Location: NORTH RICHLAND HILLS
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Broadcast Media

Street flooding reported in town.

Thunderstorm Wind in EASTLAND, TEXAS
From 07-MAY-07 08:00:00 to 07-MAY-07 08:00:00 (CST-6)
Location: LAKE LEON
Magnitude: 50.00 EG
Property damage: 1.00K
Crop damage: 0.00K
Reported by: Newspaper

Tree damage on the south side of Lake Leon.

Lightning in DALLAS, TEXAS
From 08-MAY-07 09:00:00 to 08-MAY-07 09:00:00 (CST-6)
Location: HIGHLAND PARK
Property damage: 100.00K
Crop damage: 0.00K
Reported by: Newspaper

A 4,500 square-foot building was struck by lightning and caught fire.  Damage was sustained to its roof and second floor.

Thunderstorm Wind in GRAYSON, TEXAS
From 07-MAY-07 19:20:00 to 07-MAY-07 19:20:00 (CST-6)
Location: SOUTHMAYD
Magnitude: 50.00 EG
Property damage: 25.00K
Crop damage: 0.00K
Reported by: Law Enforcement

Roof damage occurred to an elementary school.

Thunderstorm Wind in COOKE, TEXAS
From 07-MAY-07 09:41:00 to 07-MAY-07 09:41:00 (CST-6)
Location: GAINESVILLE
Magnitude: 50.00 EG
Property damage: 3.00K
Crop damage: 0.00K
Reported by: Amateur Radio

Trees and power lines blown down.

Flash Flood in YOUNG, TEXAS
From 09-MAY-07 19:00:00 to 09-MAY-07 21:00:00 (CST-6)
Location: GRAHAM
Flood cause: Heavy Rain
Property damage: 20.00K
Crop damage: 0.00K
Reported by: Newspaper

Several cars were stranded in high water.  Local residents reported some damage due to the high water.

Flash Flood in TARRANT, TEXAS
From 07-MAY-07 18:00:00 to 07-MAY-07 20:00:00 (CST-6)
Location: FT WORTH
Flood cause: Heavy Rain
Property damage: 10.00K
Crop damage: 0.00K
Reported by: Newspaper

Major flooding was reported in South Fort Worth in the Candleridge subdivision.  A community center was opened for residents who needed shelter.

Thunderstorm Wind in WISE, TEXAS
From 07-MAY-07 18:45:00 to 07-MAY-07 18:50:00 (CST-6)
Location: DECATUR
Magnitude: 50.00 EG
Property damage: 15.00K
Crop damage: 0.00K
Reported by: Newspaper

Trees were blown down and uprooted, damaging a pool deck. One trailer home northwest of Decatur had its roof blown off.

Flash Flood in COOKE, TEXAS
From 07-MAY-07 19:06:00 to 07-MAY-07 21:20:00 (CST-6)
Location: GAINESVILLE
Flood cause: Heavy Rain
Property damage: 15.00K
Crop damage: 0.00K
Reported by: Amateur Radio

Barricades needed for the Lake Kiowa area; water flooded at least one home.

Thunderstorm Wind in GRAYSON, TEXAS
From 07-MAY-07 19:30:00 to 07-MAY-07 19:30:00 (CST-6)
Location: SHERMAN MUNI ARPT
Magnitude: 50.00 EG
Property damage: 15.00K
Crop damage: 0.00K
Reported by: Newspaper

Multiple large limbs blown down.  Roof damage to five small buildings at Grayson county airport.

Hail in TARRANT, TEXAS
From 08-MAY-07 01:50:00 to 08-MAY-07 01:55:00 (CST-6)
Location: KELLER
Magnitude: 0.88 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Nickel-size hail fell for five minutes.

Flash Flood in DENTON, TEXAS
From 08-MAY-07 03:00:00 to 08-MAY-07 04:30:00 (CST-6)
Location: DENTON
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Broadcast Media

Old Alton Road in Denton was closed due to flooding as was the Interstate 35 service road in Denton.

Flash Flood in WISE, TEXAS
From 07-MAY-07 19:00:00 to 07-MAY-07 21:15:00 (CST-6)
Location: DECATUR
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Newspaper

Flash flooding of streets in and around the city of Decatur was reported.

Hail in COOKE, TEXAS
From 07-MAY-07 09:17:00 to 07-MAY-07 09:17:00 (CST-6)
Location: GAINESVILLE
Magnitude: 0.75 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: NWS Employee