A cold front moved into northwest Oklahoma during the late afternoon. With high instability and strong southwesterly winds aloft, severe thunderstorms developed rapidly along the dryline/cold front over western Oklahoma. Storms lasted well into the evening and overnight, producing large hail and damaging winds over much of west and southwest Oklahoma.

Hail in WOODWARD, OKLAHOMA
From 19-MAY-12 16:28:00 to 19-MAY-12 16:29:00 (CST-6)
Location: SHARON
Magnitude: 1.00 
Reported by: Public

Hail in ROGER MILLS, OKLAHOMA
From 19-MAY-12 16:50:00 to 19-MAY-12 16:51:00 (CST-6)
Location: ANGORA
Magnitude: 1.00 
Reported by: Public

Hail in ROGER MILLS, OKLAHOMA
From 19-MAY-12 17:19:00 to 19-MAY-12 17:20:00 (CST-6)
Location: ANGORA
Magnitude: 1.75 
Reported by: Public

Hail in DEWEY, OKLAHOMA
From 19-MAY-12 17:48:00 to 19-MAY-12 17:49:00 (CST-6)
Location: LEEDEY
Magnitude: 1.00 
Reported by: Public

Hail in WOODWARD, OKLAHOMA
From 19-MAY-12 18:48:00 to 19-MAY-12 18:49:00 (CST-6)
Location: MUTUAL
Magnitude: 1.00 
Reported by: Public

Hail in BECKHAM, OKLAHOMA
From 19-MAY-12 18:55:00 to 19-MAY-12 18:56:00 (CST-6)
Location: ELK CITY
Magnitude: 1.75 
Reported by: Trained Spotter

Hail in JACKSON, OKLAHOMA
From 19-MAY-12 23:05:00 to 19-MAY-12 23:06:00 (CST-6)
Location: (LTS)ALTUS AFB
Magnitude: 1.00 
Reported by: Broadcast Media

Thunderstorm Wind in JACKSON, OKLAHOMA
From 19-MAY-12 23:07:00 to 19-MAY-12 23:07:00 (CST-6)
Location: (LTS)ALTUS AFB
Magnitude: 51.00 MG
Reported by: AWOS

Hail in WASHITA, OKLAHOMA
From 19-MAY-12 23:21:00 to 19-MAY-12 23:22:00 (CST-6)
Location: CORDELL
Magnitude: 1.00 
Reported by: Trained Spotter

Thunderstorm Wind in GRADY, OKLAHOMA
From 19-MAY-12 23:25:00 to 19-MAY-12 23:25:00 (CST-6)
Location: MINCO
Magnitude: 55.00 MG
Reported by: Mesonet

Hail in JACKSON, OKLAHOMA
From 19-MAY-12 23:05:00 to 19-MAY-12 23:06:00 (CST-6)
Location: ALTUS
Magnitude: 1.00 
Reported by: Law Enforcement

Thunderstorm Wind in OKLAHOMA, OKLAHOMA
From 20-MAY-12 00:03:00 to 20-MAY-12 00:03:00 (CST-6)
Location: (OKC)WILL ROGERS APT
Magnitude: 61.00 MG
Reported by: ASOS

Occurred at Will Rogers World Airport.

Hail in CUSTER, OKLAHOMA
From 19-MAY-12 19:36:00 to 19-MAY-12 19:37:00 (CST-6)
Location: STAFFORD
Magnitude: 1.00 
Reported by: Public

Hail in GREER, OKLAHOMA
From 19-MAY-12 20:29:00 to 19-MAY-12 20:30:00 (CST-6)
Location: WILLOW
Magnitude: 1.00 
Reported by: Trained Spotter

Hail in GREER, OKLAHOMA
From 19-MAY-12 21:45:00 to 19-MAY-12 21:46:00 (CST-6)
Location: MANGUM
Magnitude: 1.00 
Reported by: Fire Department/Rescue

Hail in GREER, OKLAHOMA
From 19-MAY-12 21:49:00 to 19-MAY-12 21:50:00 (CST-6)
Location: MANGUM
Magnitude: 1.75 
Reported by: Emergency Manager

Thunderstorm Wind in KIOWA, OKLAHOMA
From 19-MAY-12 21:50:00 to 19-MAY-12 21:50:00 (CST-6)
Location: HOBART
Magnitude: 50.00 MG
Reported by: Mesonet

Hail in JACKSON, OKLAHOMA
From 19-MAY-12 22:45:00 to 19-MAY-12 22:46:00 (CST-6)
Location: ALTUS
Magnitude: 1.75 
Reported by: Emergency Manager

Hail in JACKSON, OKLAHOMA
From 19-MAY-12 22:59:00 to 19-MAY-12 23:00:00 (CST-6)
Location: ALTUS
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Hail in WASHITA, OKLAHOMA
From 20-MAY-12 00:20:00 to 20-MAY-12 00:21:00 (CST-6)
Location: ROCKY
Magnitude: 1.25 
Reported by: Public

Thunderstorm Wind in CLEVELAND, OKLAHOMA
From 20-MAY-12 00:40:00 to 20-MAY-12 00:41:00 (CST-6)
Location: LAKE THUNDERBIRD DAM
Magnitude: 58.00 MG
Reported by: Trained Spotter

Hail in GARVIN, OKLAHOMA
From 20-MAY-12 02:20:00 to 20-MAY-12 02:21:00 (CST-6)
Location: ELMORE CITY
Magnitude: 1.00 
Reported by: Public

Hail in BECKHAM, OKLAHOMA
From 19-MAY-12 20:10:00 to 19-MAY-12 20:11:00 (CST-6)
Location: CARTER
Magnitude: 1.75 
Reported by: Fire Department/Rescue

The hail fell east of the junction of highways 34 and 52.

Hail in GREER, OKLAHOMA
From 19-MAY-12 21:47:00 to 19-MAY-12 21:48:00 (CST-6)
Location: MANGUM
Magnitude: 2.50 
Reported by: Public

Numerous hailstones covered the ground.

Hail in ROGER MILLS, OKLAHOMA
From 19-MAY-12 18:34:00 to 19-MAY-12 18:36:00 (CST-6)
Location: CHEYENNE
Magnitude: 1.00 
Reported by: Trained Spotter

Hail in BECKHAM, OKLAHOMA
From 19-MAY-12 19:50:00 to 19-MAY-12 19:51:00 (CST-6)
Location: ELK CITY
Magnitude: 2.75 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Hail ranged in size from 2.75 to 1.25 inches in diameter and fell at several locations around the Elk City area. No damage was reported.

Thunderstorm Wind in CLEVELAND, OKLAHOMA
From 20-MAY-12 00:10:00 to 20-MAY-12 00:10:00 (CST-6)
Location: MOORE
Magnitude: 52.00 EG
Reported by: Trained Spotter

A trained spotter estimated the wind gust along interstate 35 between southwest 134th and 89th streets. Light tree damage was also reported, with small limbs downed. No other damage was reported.