Thunderstorms developed over far northeast Oklahoma, in the vicinity of a warm front and an outflow boundary from earlier thunderstorms. Large hail, damaging winds, several tornadoes and flash flooding were observed with these thunderstorms. This event began during the evening hours of April 30th and continued into the early morning hours of May 1st.

Flash Flood in CRAIG, OKLAHOMA
From 01-MAY-12 01:52:00 to 01-MAY-12 06:00:00 (CST-6)
Location: CENTRALIA
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Brush Creek flooded portions of Highway 10 just east of the county line resulting in the road being closed.

Thunderstorm Wind in ADAIR, OKLAHOMA
From 01-MAY-12 02:35:00 to 01-MAY-12 02:35:00 (CST-6)
Location: WESTVILLE
Magnitude: 52.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Strong thunderstorm wind blew down large tree limbs.

Tornado in CRAIG, OKLAHOMA
From 01-MAY-12 00:30:00 to 01-MAY-12 00:32:00 (CST-6)
Location: WELCH
Tornado F-scale: EF2
Property damage: 250.00K
Crop damage: 0.00K
Reported by: NWS Storm Survey

A tornado tore the roof off of a permanent home, shifted another permanent home off its foundation and blew out an exterior wall, turned over an outbuilding, rolled two horse trailers, destroyed a 40' by 60' steel-framed barn, and snapped or uprooted a number of hardwood trees. Maximum estimated wind in the tornado based on this damage was 110 to 120 mph.

Thunderstorm Wind in CRAIG, OKLAHOMA
From 01-MAY-12 00:05:00 to 01-MAY-12 00:05:00 (CST-6)
Location: CENTRALIA
Magnitude: 61.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Strong thunderstorm wind snapped large branches from several hardwood trees.

Flash Flood in PAWNEE, OKLAHOMA
From 01-MAY-12 00:00:00 to 01-MAY-12 02:00:00 (CST-6)
Location: RALSTON
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Several county roads were briefly flooded near and just east of Ralston.

Thunderstorm Wind in CRAIG, OKLAHOMA
From 01-MAY-12 00:11:00 to 01-MAY-12 00:11:00 (CST-6)
Location: CENTRALIA
Magnitude: 61.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Strong thunderstorm wind blew down large trees onto a road.

Thunderstorm Wind in WAGONER, OKLAHOMA
From 01-MAY-12 00:21:00 to 01-MAY-12 00:21:00 (CST-6)
Location: BROKEN ARROW
Magnitude: 61.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Broadcast Media

Thunderstorm wind gusts of up to 70 mph were estimated at the Blue Bell Plant on the east side of Broken Arrow.

Thunderstorm Wind in MAYES, OKLAHOMA
From 01-MAY-12 00:30:00 to 01-MAY-12 00:30:00 (CST-6)
Location: LANGLEY
Magnitude: 56.00 EG
Property damage: 2.00K
Crop damage: 0.00K
Reported by: Law Enforcement

Strong thunderstorm wind damaged the shingles of several homes and blew down large tree limbs.

Thunderstorm Wind in CRAIG, OKLAHOMA
From 01-MAY-12 00:30:00 to 01-MAY-12 00:30:00 (CST-6)
Location: PYRAMID CORNERS
Magnitude: 54.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Mesonet

The Oklahoma Mesonet station north of Vinita measured 62 mph thunderstorm wind gusts.

Thunderstorm Wind in OTTAWA, OKLAHOMA
From 01-MAY-12 00:34:00 to 01-MAY-12 00:34:00 (CST-6)
Location: MIAMI
Magnitude: 70.00 EG
Property damage: 5.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Strong thunderstorm wind blew down power lines and trees.

Thunderstorm Wind in OTTAWA, OKLAHOMA
From 01-MAY-12 00:35:00 to 01-MAY-12 00:35:00 (CST-6)
Location: MIAMI
Magnitude: 56.00 EG
Property damage: 5.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Strong thunderstorm wind blew down large tree limbs and power lines.

Thunderstorm Wind in ROGERS, OKLAHOMA
From 01-MAY-12 00:45:00 to 01-MAY-12 00:45:00 (CST-6)
Location: INOLA ARPT
Magnitude: 50.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Mesonet

The Oklahoma Mesonet station east of Inola measured 58 mph thunderstorm wind gusts.

Thunderstorm Wind in MAYES, OKLAHOMA
From 01-MAY-12 00:53:00 to 01-MAY-12 00:53:00 (CST-6)
Location: CHOUTEAU
Magnitude: 52.00 EG
Property damage: 10.00K
Crop damage: 0.00K
Reported by: Law Enforcement

Strong thunderstorm wind blew down large tree limbs and damaged shingles on numerous homes.

Hail in OKMULGEE, OKLAHOMA
From 01-MAY-12 00:57:00 to 01-MAY-12 00:57:00 (CST-6)
Location: OKMULGEE
Magnitude: 0.75 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Emergency Manager