A stationary frontal boundary extended across southeastern Oklahoma and west central Arkansas on the 19th. Very moist and unstable air was in place along and south of the boundary. Thunderstorms developed over western Oklahoma during the afternoon and moved eastward across southern Oklahoma during the evening and overnight hours. Widespread heavy rainfall occurred across southeastern Oklahoma, which resulted in flash flooding. Damaging wind was also associated with some of the stronger storms.

Flood in PITTSBURG, OKLAHOMA
From 20-MAY-15 06:45:00 to 20-MAY-15 15:30:00 (CST-6)
Location: HAILEYVILLE
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Newspaper

Highway 63 near Haileyville was closed due to high water.

Flash Flood in PUSHMATAHA, OKLAHOMA
From 20-MAY-15 05:30:00 to 20-MAY-15 05:30:00 (CST-6)
Location: HONOBIA
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Fire Department/Rescue

Several county roads were closed due to flooding.

Flash Flood in SEQUOYAH, OKLAHOMA
From 19-MAY-15 23:52:00 to 20-MAY-15 03:30:00 (CST-6)
Location: VIAN
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Portions of Highway 64 were flooded.

Flash Flood in PUSHMATAHA, OKLAHOMA
From 20-MAY-15 00:30:00 to 20-MAY-15 03:03:00 (CST-6)
Location: CLAYTON
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Law Enforcement

Numerous roads were flooded in and around Clayton after more than six inches of rain fell.

Flash Flood in LE FLORE, OKLAHOMA
From 20-MAY-15 06:00:00 to 20-MAY-15 08:00:00 (CST-6)
Location: TALIHINA
Flood cause: Heavy Rain
Property damage: 100.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Widespread flooding occurred in this part of the county. Five apartments were inundated with up to six inches of water. Several class rooms at the high school field house were flooded. Two businesses and a duplex were flooded. Numerous county roads were flooded and impassable, including Highway 82, Highway 63, Highway 1.

Flood in PITTSBURG, OKLAHOMA
From 20-MAY-15 06:45:00 to 20-MAY-15 15:30:00 (CST-6)
Location: MC ALESTER
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Newspaper

Highway 31 west of McAlester was closed due to high water.

Flash Flood in LE FLORE, OKLAHOMA
From 20-MAY-15 00:43:00 to 20-MAY-15 04:00:00 (CST-6)
Location: TALIHINA
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Roads were closed in and around Talihina due to flooding.

Flood in CHOCTAW, OKLAHOMA
From 20-MAY-15 05:30:00 to 21-MAY-15 17:30:00 (CST-6)
Location: FALLON
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Emergency Manager

A man drove into flood waters on Ballpark Road north of Hugo during the evening of May 21st. The vehicle became stranded. The driver was able to escape the flood water but then went back into the water to gather personal items. He reportedly stepped into a hole, went under water, and was swept away. The man drown and was recovered on May 22nd.

Flash Flood in LE FLORE, OKLAHOMA
From 20-MAY-15 01:53:00 to 20-MAY-15 04:00:00 (CST-6)
Location: TALIHINA
Flood cause: Heavy Rain
Property damage: 150.00K
Crop damage: 0.00K
Reported by: Fire Department/Rescue

Numerous buildings in town were flooded, including the housing authority, the Choctaw Nation Hospital, and a nursing home.

Flash Flood in LE FLORE, OKLAHOMA
From 20-MAY-15 04:00:00 to 20-MAY-15 08:00:00 (CST-6)
Location: TALIHINA
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Broadcast Media

Extensive flooding in and around town resulted in the closing of schools.

Flash Flood in PUSHMATAHA, OKLAHOMA
From 20-MAY-15 04:00:00 to 20-MAY-15 05:30:00 (CST-6)
Location: NASHOBA
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Law Enforcement

Five to seven inches of rain resulted in the flooding of several county roads, which cut off access to several homes.

Thunderstorm Wind in HASKELL, OKLAHOMA
From 19-MAY-15 22:50:00 to 19-MAY-15 22:50:00 (CST-6)
Location: MC CURTAIN
Magnitude: 52.00 EG
Property damage: 2.00K
Crop damage: 0.00K
Reported by: Public

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

Flash Flood in HASKELL, OKLAHOMA
From 19-MAY-15 23:00:00 to 20-MAY-15 03:30:00 (CST-6)
Location: WHITEFIELD
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Numerous roads were flooded in and around Whitefield.

Thunderstorm Wind in HASKELL, OKLAHOMA
From 19-MAY-15 23:05:00 to 19-MAY-15 23:05:00 (CST-6)
Location: KEOTA
Magnitude: 65.00 EG
Property damage: 30.00K
Crop damage: 0.00K
Reported by: Emergency Manager

A large tree fell onto a house, significantly damaging the structure.

Flash Flood in SEQUOYAH, OKLAHOMA
From 19-MAY-15 23:52:00 to 20-MAY-15 04:00:00 (CST-6)
Location: SALLISAW
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Several roads were flooded in and around Sallisaw.

Thunderstorm Wind in LE FLORE, OKLAHOMA
From 19-MAY-15 23:12:00 to 19-MAY-15 23:12:00 (CST-6)
Location: BOKOSHE
Magnitude: 52.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Thunderstorm wind gusts were estimated to 60 mph.