Thunderstorms began early in the morning on the 6th, continued most of the day and into the early morning hours of the 7th. An upper level low pressure remained anchored over Colorado during this time period. Surface low pressure was located over southeast Colorado, with a dryline extending south along the Oklahoma and Texas panhandle border. Outflow boundaries were also present from previous thunderstorm activity. These boundaries were important in the formation of thunderstorms throughout the day. Moisture was in abundance that day, along with very strong instability. Wind shear remained quite favorable for supercell thunderstorms. Most of the thunderstorms began over the northwest half of Oklahoma, but moved south and east into the morning and afternoon hours of the 7th.  Large hail, high winds, and tornadoes were common, with flooding rains also present.  One small supercell thunderstorm developed east of the main thunderstorm area during the evening and produced two small tornadoes as it moved to the north. Two other tornadoes occurred in the early morning hours as thunderstorms moving northeast into central Oklahoma interacted with gust front boundaries from previous thunderstorms.

Tornado in OKLAHOMA, OKLAHOMA
From 07-MAY-07 01:32:00 to 07-MAY-07 01:33:00 (CST-6)
Location: FOREST PARK
Tornado F-scale: EF0
Property damage: 25.00K
Crop damage: 0.00K
Reported by: NWS Storm Survey

This tornado occurred within the city limits of Oklahoma City.  A narrow path of considerable tree damage was found from just northwest of the intersection of NE 36th Street and Martin Luther King Avenue to just east of the intersection of Interstate 35 and NE 50th Street, including a swath about 30 yards wide across Lincoln Park Golf Course.  Damage consisted of numerous small to medium branches broken off trees, as well as numerous large rotted branches. A number of small trees in wet soil were also pushed over along this path.  Minor shingle damage was noted to a home just east of I-35 and NE 50th Street, and minor gutter damage was noted to a large metal building just to the southwest of the house. A couple of wooden fences were pushed over and a small canopy was torn near the start of the path. However other structures in or near the path showed little discernible damage. Monetary damages were estimated.

Hail in CADDO, OKLAHOMA
From 07-MAY-07 00:00:00 to 07-MAY-07 00:00:00 (CST-6)
Location: GRACEMONT
Magnitude: 0.88 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Hail in STEPHENS, OKLAHOMA
From 07-MAY-07 00:45:00 to 07-MAY-07 00:45:00 (CST-6)
Location: DUNCAN
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Hail in OKLAHOMA, OKLAHOMA
From 07-MAY-07 01:33:00 to 07-MAY-07 01:33:00 (CST-6)
Location: OKLAHOMA CITY
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Reported near Oklahoma City Community College at 74th and South May Avenue.

Hail in BRYAN, OKLAHOMA
From 07-MAY-07 09:02:00 to 07-MAY-07 09:02:00 (CST-6)
Location: BLUE
Magnitude: 0.75 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: County Official

Hail in BECKHAM, OKLAHOMA
From 06-MAY-07 17:15:00 to 06-MAY-07 17:15:00 (CST-6)
Location: CARTER
Magnitude: 0.75 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: COOP Observer

Hail in CUSTER, OKLAHOMA
From 06-MAY-07 17:33:00 to 06-MAY-07 17:33:00 (CST-6)
Location: FOSS RES DAM
Magnitude: 1.75 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Broadcast Media

Hail in WOODS, OKLAHOMA
From 06-MAY-07 15:35:00 to 06-MAY-07 15:35:00 (CST-6)
Location: FREEDOM
Magnitude: 0.75 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Hail in WOODWARD, OKLAHOMA
From 06-MAY-07 15:35:00 to 06-MAY-07 15:35:00 (CST-6)
Location: MOORELAND
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Lightning in MCCLAIN, OKLAHOMA
From 07-MAY-07 05:30:00 to 07-MAY-07 05:30:00 (CST-6)
Location: BLANCHARD
Property damage: 30.00K
Crop damage: 0.00K
Reported by: Newspaper

A house fire was started after a direct lightning strike. No injuries were reported.

Flash Flood in GRADY, OKLAHOMA
From 07-MAY-07 05:30:00 to 07-MAY-07 05:30:00 (CST-6)
Location: POCASSET
Flood cause: Heavy Rain
Property damage: 8.00K
Crop damage: 0.00K
Reported by: Newspaper

Highway 81 north of Pocasset was closed due to high water. A car drove into flooded street causing car to be washed off the roadway. One injury was reported. Monetary damages were estimated.

Tornado in POTTAWATOMIE, OKLAHOMA
From 07-MAY-07 02:15:00 to 07-MAY-07 02:15:00 (CST-6)
Location: DALE
Tornado F-scale: EF0
Property damage: 8.00K
Crop damage: 0.00K
Reported by: NWS Storm Survey

A tornado occurred briefly about 2 miles west-southwest of Dale. NWS personnel noted some large branches were broken off of a few trees. Monetary damages were estimated.

Thunderstorm Wind in OKLAHOMA, OKLAHOMA
From 07-MAY-07 01:50:00 to 07-MAY-07 01:50:00 (CST-6)
Location: OKLAHOMA CITY
Magnitude: 52.00 EG
Property damage: 20.00K
Crop damage: 0.00K
Reported by: Newspaper

A building was heavily damaged at Ben's Automotive. Several windows were broken and bricks were blown off of a building. An apartment building received minor roof damage. Several large trees were uprooted due to the high winds. Monetary damages were estimated.

Hail in GREER, OKLAHOMA
From 06-MAY-07 19:15:00 to 06-MAY-07 19:15:00 (CST-6)
Location: BRINKMAN
Magnitude: 0.75 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Hail in BECKHAM, OKLAHOMA
From 06-MAY-07 19:23:00 to 06-MAY-07 19:23:00 (CST-6)
Location: ERICK
Magnitude: 0.75 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Thunderstorm Wind in GRADY, OKLAHOMA
From 07-MAY-07 01:15:00 to 07-MAY-07 01:15:00 (CST-6)
Location: CHICKASHA
Magnitude: 52.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Thunderstorm Wind in CLEVELAND, OKLAHOMA
From 07-MAY-07 01:45:00 to 07-MAY-07 01:45:00 (CST-6)
Location: NORMAN
Magnitude: 52.00 EG
Property damage: 4.00K
Crop damage: 0.00K
Reported by: NWS Employee

Large trees were blown down. Some large Bradford Pear trees snapped at the base. Reported near 96th and St. HWY 9. Monetary damages were estimated.

Flash Flood in OKLAHOMA, OKLAHOMA
From 07-MAY-07 06:30:00 to 07-MAY-07 06:30:00 (CST-6)
Location: HARRAH
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: County Official

NE 50th and Harrah Road were closed due to high water.

Hail in WOODS, OKLAHOMA
From 06-MAY-07 14:50:00 to 06-MAY-07 14:50:00 (CST-6)
Location: CAMP HOUSTON
Magnitude: 0.88 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Hail in WOODWARD, OKLAHOMA
From 06-MAY-07 15:08:00 to 06-MAY-07 15:08:00 (CST-6)
Location: WOODWARD
Magnitude: 0.75 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Amateur Radio

Hail in HARMON, OKLAHOMA
From 06-MAY-07 16:15:00 to 06-MAY-07 16:15:00 (CST-6)
Location: HOLLIS
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Hail in HARMON, OKLAHOMA
From 06-MAY-07 17:11:00 to 06-MAY-07 17:11:00 (CST-6)
Location: MADGE
Magnitude: 0.75 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Tornado in SEMINOLE, OKLAHOMA
From 06-MAY-07 20:38:00 to 06-MAY-07 20:38:00 (CST-6)
Location: LITTLE
Tornado F-scale: EF0
Property damage: 15.00K
Crop damage: 0.00K
Reported by: NWS Storm Survey

Two small metal barns sustained roof damage from a tornado along State Highway 99A east of Little.  Adjacent trees in the area suffered some broken branches, but no significant damage. Monetary damages were estimated.

Thunderstorm Wind in CANADIAN, OKLAHOMA
From 07-MAY-07 01:30:00 to 07-MAY-07 01:30:00 (CST-6)
Location: MUSTANG
Magnitude: 52.00 EG
Property damage: 9.70K
Crop damage: 0.00K
Reported by: Newspaper

The roof of the Crafts Building at Mustang High School was damaged due to  high winds.

Flash Flood in MCCLAIN, OKLAHOMA
From 07-MAY-07 06:30:00 to 07-MAY-07 06:30:00 (CST-6)
Location: NEWCASTLE
Flood cause: Heavy Rain
Property damage: 5.00K
Crop damage: 0.00K
Reported by: Newspaper

High water was reported moving into the Fire Station in Newcastle. Monetary damages were estimated.

Hail in WOODS, OKLAHOMA
From 06-MAY-07 08:35:00 to 06-MAY-07 08:35:00 (CST-6)
Location: ALVA
Magnitude: 0.75 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Thunderstorm Wind in JEFFERSON, OKLAHOMA
From 07-MAY-07 10:50:00 to 07-MAY-07 10:50:00 (CST-6)
Location: RINGLING
Magnitude: 50.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Mesonet

Hail in ALFALFA, OKLAHOMA
From 06-MAY-07 08:50:00 to 06-MAY-07 08:50:00 (CST-6)
Location: BURLINGTON
Magnitude: 0.88 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Flash Flood in ATOKA, OKLAHOMA
From 07-MAY-07 11:44:00 to 07-MAY-07 11:44:00 (CST-6)
Location: ATOKA
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Several city streets were closed due to high water. Many county roads were also closed.

Hail in HARMON, OKLAHOMA
From 06-MAY-07 11:41:00 to 06-MAY-07 11:41:00 (CST-6)
Location: HOLLIS
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Law Enforcement

Hail in HARMON, OKLAHOMA
From 06-MAY-07 13:45:00 to 06-MAY-07 13:45:00 (CST-6)
Location: HOLLIS
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Law Enforcement

Hail in ROGER MILLS, OKLAHOMA
From 06-MAY-07 13:55:00 to 06-MAY-07 13:55:00 (CST-6)
Location: CHEYENNE
Magnitude: 0.88 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Flash Flood in CLEVELAND, OKLAHOMA
From 07-MAY-07 07:00:00 to 07-MAY-07 07:00:00 (CST-6)
Location: OKLAHOMA CITY
Flood cause: Heavy Rain
Property damage: 5.00K
Crop damage: 0.00K
Reported by: Broadcast Media

Lightning Creek out of its banks in south Oklahoma City. Major flooding was reported near South 59th Street and Harvey. Water was three feet deep over S. Western at SW 83rd Street. Vehicles were also reported stalled in the high water. Monetary damages were estimated.

Flash Flood in CLEVELAND, OKLAHOMA
From 07-MAY-07 07:00:00 to 07-MAY-07 07:00:00 (CST-6)
Location: LEXINGTON
Flood cause: Heavy Rain
Property damage: 15.00K
Crop damage: 0.00K
Reported by: NWS Employee

The creek was out of its banks at Center and 1st Streets. Water was rising into homes. Monetary damages were estimated.

Flash Flood in BRYAN, OKLAHOMA
From 07-MAY-07 08:45:00 to 07-MAY-07 08:45:00 (CST-6)
Location: BENNINGTON
Flood cause: Heavy Rain
Property damage: 10.00K
Crop damage: 0.00K
Reported by: County Official

A vehicle was swept off a county road near HWY 70. The occupant was rescued without injury. Monetary damages were estimated.

Flash Flood in CLEVELAND, OKLAHOMA
From 07-MAY-07 08:30:00 to 07-MAY-07 08:30:00 (CST-6)
Location: NORMAN
Flood cause: Heavy Rain
Property damage: 15.00K
Crop damage: 0.00K
Reported by: County Official

Several roads across the county were closed due to high water. Three water rescues were made due to water over rising near the top of the cars. Three minor injuries were reported. Monetary damages were estimated.

Thunderstorm Wind in MCCLAIN, OKLAHOMA
From 07-MAY-07 01:45:00 to 07-MAY-07 01:45:00 (CST-6)
Location: GOLDSBY
Magnitude: 52.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Thunderstorm Wind in OKLAHOMA, OKLAHOMA
From 07-MAY-07 01:54:00 to 07-MAY-07 01:54:00 (CST-6)
Location: (TIK)TINKER AFB
Magnitude: 61.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: ASOS

Hail in HARMON, OKLAHOMA
From 06-MAY-07 13:30:00 to 06-MAY-07 13:30:00 (CST-6)
Location: HOLLIS
Magnitude: 0.75 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Hail in HARMON, OKLAHOMA
From 06-MAY-07 14:41:00 to 06-MAY-07 14:41:00 (CST-6)
Location: HOLLIS
Magnitude: 0.75 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Hail in HARMON, OKLAHOMA
From 06-MAY-07 14:44:00 to 06-MAY-07 14:44:00 (CST-6)
Location: HOLLIS
Magnitude: 0.75 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Amateur Radio

Hail in ROGER MILLS, OKLAHOMA
From 06-MAY-07 13:40:00 to 06-MAY-07 13:40:00 (CST-6)
Location: CHEYENNE
Magnitude: 0.75 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Thunderstorm Wind in BECKHAM, OKLAHOMA
From 06-MAY-07 17:15:00 to 06-MAY-07 17:15:00 (CST-6)
Location: CARTER
Magnitude: 52.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: COOP Observer

Thunderstorm Wind in WOODWARD, OKLAHOMA
From 06-MAY-07 07:25:00 to 06-MAY-07 07:25:00 (CST-6)
Location: MUTUAL
Magnitude: 52.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Mesonet

Tornado in SEMINOLE, OKLAHOMA
From 06-MAY-07 20:23:00 to 06-MAY-07 20:23:00 (CST-6)
Location: SEMINOLE
Tornado F-scale: EF0
Property damage: 40.00K
Crop damage: 0.00K
Reported by: NWS Storm Survey

Damage from a brief tornado occurred near State Highway 9 to the east of Seminole.  A large tree fell onto a trailer and a car and pushed the trailer off of its foundation.  To the east of this mobile home, the sheet metal roof of a garage was flipped north against another mobile home and the outer walls of the garage collapsed. Monetary damages were estimated.

Thunderstorm Wind in CUSTER, OKLAHOMA
From 06-MAY-07 18:20:00 to 06-MAY-07 18:20:00 (CST-6)
Location: CUSTER CITY
Magnitude: 52.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Hail in ALFALFA, OKLAHOMA
From 06-MAY-07 09:00:00 to 06-MAY-07 09:00:00 (CST-6)
Location: BURLINGTON
Magnitude: 0.88 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Hail in HARPER, OKLAHOMA
From 06-MAY-07 11:41:00 to 06-MAY-07 11:41:00 (CST-6)
Location: ROSSTON
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Hail in HARMON, OKLAHOMA
From 06-MAY-07 14:17:00 to 06-MAY-07 14:17:00 (CST-6)
Location: HOLLIS
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Thunderstorm Wind in WOODWARD, OKLAHOMA
From 06-MAY-07 07:20:00 to 06-MAY-07 07:20:00 (CST-6)
Location: MUTUAL
Magnitude: 52.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Mesonet

Thunderstorm Wind in ALFALFA, OKLAHOMA
From 06-MAY-07 08:50:00 to 06-MAY-07 08:50:00 (CST-6)
Location: BURLINGTON
Magnitude: 52.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Thunderstorm Wind in GRADY, OKLAHOMA
From 07-MAY-07 01:15:00 to 07-MAY-07 01:15:00 (CST-6)
Location: CHICKASHA
Magnitude: 52.00 EG
Property damage: 8.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Several large trees were blown over.

Hail in HARMON, OKLAHOMA
From 06-MAY-07 14:23:00 to 06-MAY-07 14:23:00 (CST-6)
Location: HOLLIS
Magnitude: 0.75 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Thunderstorm Wind in CARTER, OKLAHOMA
From 07-MAY-07 10:40:00 to 07-MAY-07 10:40:00 (CST-6)
Location: WILSON
Magnitude: 52.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public