Severe thunderstorms developed across portions of eastern Oklahoma during the evening of the 3rd, along and mostly east of a stationary front that stretched across the area. The air mass across southeastern Oklahoma and west central Arkansas became very unstable ahead of the storms, and wind shear across the region increased as an upper level disturbance approached from the west. These conditions supported the development of supercells and bowing line segments, which produced several tornadoes, large hail up to ping pong ball size, and damaging wind gusts.

Thunderstorm Wind in LE FLORE, OKLAHOMA
From 03-MAY-21 20:51:00 to 03-MAY-21 20:51:00 (CST-6)
Location: ARKOMA
Magnitude: 65.00 EG
Property damage: 5.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Strong thunderstorm wind blew down trees and power lines.

Thunderstorm Wind in PITTSBURG, OKLAHOMA
From 03-MAY-21 18:51:00 to 03-MAY-21 18:51:00 (CST-6)
Location: SAVANNA
Magnitude: 70.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Broadcast Media

A storm tracker for a local tv station estimated 80 mph thunderstorm wind gusts.

Hail in PITTSBURG, OKLAHOMA
From 03-MAY-21 18:51:00 to 03-MAY-21 18:51:00 (CST-6)
Location: SAVANNA
Magnitude: 1.50 
Property damage: 15.00K
Crop damage: 0.00K
Reported by: Broadcast Media

A storm tracker for a local tv station reported ping pong ball size hail.

Thunderstorm Wind in PITTSBURG, OKLAHOMA
From 03-MAY-21 18:56:00 to 03-MAY-21 18:56:00 (CST-6)
Location: (MLC)MC ALESTER MUNI
Magnitude: 62.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: ASOS

The ASOS at the McAlester Regional Airport measured 71 mph thunderstorm wind gusts.

Tornado in SEQUOYAH, OKLAHOMA
From 03-MAY-21 20:33:00 to 03-MAY-21 20:41:00 (CST-6)
Location: PAW PAW
Tornado F-scale: EF1
Property damage: 30.00K
Crop damage: 0.00K
Reported by: NWS Storm Survey

This is the first segment of a four segment tornado. The tornado developed southeast of Muldrow, where trees were uprooted. It moved northeast uprooting trees, toppling multiple center-pivot irrigation systems, and snapping power poles to near Moffett. Based on this damage, maximum estimated wind in this segment of the tornado was 95 to 105 mph. The tornado continued into Crawford County, Arkansas.

Tornado in SEQUOYAH, OKLAHOMA
From 03-MAY-21 20:36:00 to 03-MAY-21 20:45:00 (CST-6)
Location: MULDROW
Tornado F-scale: EF1
Property damage: 100.00K
Crop damage: 0.00K
Reported by: NWS Storm Survey

This is the first segment of a two segment tornado. This tornado developed on the east side of Muldrow, Oklahoma, uprooting trees and snapping large tree limbs. It moved east-northeast passing just north of Roland, where trees were snapped, power poles were snapped, outbuildings were destroyed, and several homes were damaged. The tornado then moved northeast uprooting trees, snapping power poles, and damaging outbuildings as it approached the state line. Based on this damage, maximum estimated wind in this segment of the tornado was 100 to 110 mph. The tornado continued into Crawford County, Arkansas.

Hail in LATIMER, OKLAHOMA
From 03-MAY-21 19:38:00 to 03-MAY-21 19:38:00 (CST-6)
Location: PATTERSON
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Hail in CREEK, OKLAHOMA
From 03-MAY-21 20:14:00 to 03-MAY-21 20:14:00 (CST-6)
Location: MOUNDS
Magnitude: 0.75 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Hail in LE FLORE, OKLAHOMA
From 03-MAY-21 20:24:00 to 03-MAY-21 20:24:00 (CST-6)
Location: POTEAU
Magnitude: 0.75 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Thunderstorm Wind in LE FLORE, OKLAHOMA
From 03-MAY-21 20:21:00 to 03-MAY-21 20:21:00 (CST-6)
Location: BOKOSHE
Magnitude: 61.00 EG
Property damage: 2.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Strong thunderstorm wind blew down a tree and power lines on Twilight Road near Bokoshe.

Thunderstorm Wind in CHOCTAW, OKLAHOMA
From 03-MAY-21 20:17:00 to 03-MAY-21 20:17:00 (CST-6)
Location: SPEER
Magnitude: 65.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Strong thunderstorm wind blew down several trees across the northern part of Choctaw County, near the town of Speer.

Thunderstorm Wind in CHOCTAW, OKLAHOMA
From 03-MAY-21 20:30:00 to 03-MAY-21 20:30:00 (CST-6)
Location: SPENCERVILLE
Magnitude: 65.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Strong thunderstorm wind blew down several trees across the northern part of Choctaw County, near the town of Spencerville.

Hail in PAWNEE, OKLAHOMA
From 03-MAY-21 22:46:00 to 03-MAY-21 22:46:00 (CST-6)
Location: PAWNEE
Magnitude: 1.50 
Property damage: 20.00K
Crop damage: 0.00K
Reported by: Social Media

Ping pong ball size hail damaged vehicles and homes.

Thunderstorm Wind in HASKELL, OKLAHOMA
From 03-MAY-21 19:55:00 to 03-MAY-21 19:55:00 (CST-6)
Location: STIGLER
Magnitude: 52.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Law Enforcement

Thunderstorm wind gusts were estimated to 60 mph near Stigler.

Flash Flood in PITTSBURG, OKLAHOMA
From 03-MAY-21 20:27:00 to 03-MAY-21 21:45:00 (CST-6)
Location: NORTH MC ALESTER
Flood cause: Heavy Rain
Property damage: 25.00K
Crop damage: 0.00K
Reported by: Public

Numerous roads in and around McAlester were flooded, and several vehicles were stranded in high water.