A cold front moved into northern Oklahoma during the afternoon hours of the 15th, with very unstable air located ahead of it. Conditions were very favorable for severe thunderstorm development, with individual storms congealing into a solid line by early evening. Strong winds to 70 mph and quarter size hail were reported with the thunderstorms as they moved southeast.

Hail in OKLAHOMA, OKLAHOMA
From 15-MAY-09 21:29:00 to 15-MAY-09 21:29:00 (CST-6)
Location: OKLAHOMA CITY
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Amateur Radio

The hail was reported at NW 35th Street and Classen Boulevard.

Hail in CLEVELAND, OKLAHOMA
From 15-MAY-09 21:31:00 to 15-MAY-09 21:31:00 (CST-6)
Location: MOORE
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Emergency Manager

The hail was reported at NE 12TH Street and Eastern Avenue.

Thunderstorm Wind in MCCLAIN, OKLAHOMA
From 15-MAY-09 21:45:00 to 15-MAY-09 21:45:00 (CST-6)
Location: PURCELL
Magnitude: 61.00 EG
Crop damage: 0.00K
Reported by: Other Federal Agency

Trees were blown down, a flag pole was bent, and minor roof damage was reported to a residence on Highway 74 in Purcell. Monetary damage estimates were not available.

Thunderstorm Wind in KAY, OKLAHOMA
From 15-MAY-09 19:11:00 to 15-MAY-09 19:11:00 (CST-6)
Location: PONCA CITY
Magnitude: 56.00 EG
Property damage: 1.50K
Crop damage: 0.00K
Reported by: Trained Spotter

A large tree was blown down onto a road.

Thunderstorm Wind in KAY, OKLAHOMA
From 15-MAY-09 19:20:00 to 15-MAY-09 19:20:00 (CST-6)
Location: PONCA CITY
Magnitude: 61.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

No damage was reported by the spotter.

Thunderstorm Wind in HARMON, OKLAHOMA
From 15-MAY-09 19:35:00 to 15-MAY-09 19:35:00 (CST-6)
Location: MC QUEEN
Magnitude: 52.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

No damage was reported with the wind gust.

Hail in LOGAN, OKLAHOMA
From 15-MAY-09 20:10:00 to 15-MAY-09 20:10:00 (CST-6)
Location: CIMARRON CITY
Magnitude: 0.88 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Hail in KIOWA, OKLAHOMA
From 15-MAY-09 20:40:00 to 15-MAY-09 20:40:00 (CST-6)
Location: COLD SPRINGS
Magnitude: 0.75 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Amateur Radio

Hail in CANADIAN, OKLAHOMA
From 15-MAY-09 21:12:00 to 15-MAY-09 21:12:00 (CST-6)
Location: EL RENO
Magnitude: 0.88 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Law Enforcement

Hail in HARPER, OKLAHOMA
From 15-MAY-09 15:15:00 to 15-MAY-09 15:15:00 (CST-6)
Location: MAY
Magnitude: 0.88 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Thunderstorm Wind in KAY, OKLAHOMA
From 15-MAY-09 15:15:00 to 15-MAY-09 15:15:00 (CST-6)
Location: BLACKWELL
Magnitude: 52.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Amateur Radio

The wind gust was measured on Interstate 35.

Hail in WOODS, OKLAHOMA
From 15-MAY-09 15:33:00 to 15-MAY-09 15:33:00 (CST-6)
Location: CAMP HOUSTON
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Thunderstorm Wind in KAY, OKLAHOMA
From 15-MAY-09 18:30:00 to 15-MAY-09 18:30:00 (CST-6)
Location: BLACKWELL
Magnitude: 52.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Emergency Manager

The wind gust was estimated on Interstate 35.

Thunderstorm Wind in CUSTER, OKLAHOMA
From 15-MAY-09 18:40:00 to 15-MAY-09 18:40:00 (CST-6)
Location: BUTLER
Magnitude: 60.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Mesonet

Thunderstorm Wind in KAY, OKLAHOMA
From 15-MAY-09 18:43:00 to 15-MAY-09 18:43:00 (CST-6)
Location: BLACKWELL
Magnitude: 61.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Thunderstorm Wind in WASHITA, OKLAHOMA
From 15-MAY-09 19:05:00 to 15-MAY-09 19:05:00 (CST-6)
Location: BESSIE
Magnitude: 52.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Mesonet

Hail in OKLAHOMA, OKLAHOMA
From 15-MAY-09 21:20:00 to 15-MAY-09 21:20:00 (CST-6)
Location: DEL CITY
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Amateur Radio

The hail was reported near Sooner Road and 23rd Street SE.

Hail in CLEVELAND, OKLAHOMA
From 15-MAY-09 21:25:00 to 15-MAY-09 21:25:00 (CST-6)
Location: MOORE
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Emergency Manager