Strong to severe thunderstorms developed over northeastern Oklahoma during the morning of the 5th, as warm, moist, and unstable air was drawn northward over a warm front that stretched across the area. Strong instability, coupled with strong deep-layer wind shear, promoted the development of supercells that produced large hail up to tennis ball size.
Another round of thunderstorms developed across northeastern Oklahoma during the afternoon as a cold front moved into the area. The combination of strong instability and strong deep-layer wind shear resulted in supercells to once again develop, producing large hail up to baseball size and damaging wind gusts, as the storms moved east and southeast through the evening.

Hail in CRAIG, OKLAHOMA
From 04-MAY-20 08:12:00 to 04-MAY-20 08:12:00 (CST-6)
Location: VINITA ARPT
Magnitude: 2.50 
Property damage: 25.00K
Crop damage: 0.00K
Reported by: Public

Tennis ball size hail damaged vehicles and homes.

Hail in DELAWARE, OKLAHOMA
From 04-MAY-20 08:25:00 to 04-MAY-20 08:25:00 (CST-6)
Location: JAY
Magnitude: 2.50 
Property damage: 30.00K
Crop damage: 0.00K
Reported by: Public

Tennis ball size hail damaged vehicles and homes.

Hail in OTTAWA, OKLAHOMA
From 04-MAY-20 08:25:00 to 04-MAY-20 08:25:00 (CST-6)
Location: AFTON
Magnitude: 1.75 
Property damage: 20.00K
Crop damage: 0.00K
Reported by: Fire Department/Rescue

Golf ball size hail damaged vehicles and homes.

Hail in DELAWARE, OKLAHOMA
From 04-MAY-20 08:25:00 to 04-MAY-20 08:25:00 (CST-6)
Location: JAY
Magnitude: 1.50 
Property damage: 25.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Ping pong ball size hail damaged vehicles and homes.

Hail in OTTAWA, OKLAHOMA
From 04-MAY-20 08:35:00 to 04-MAY-20 08:35:00 (CST-6)
Location: FAIRLAND
Magnitude: 1.50 
Property damage: 25.00K
Crop damage: 0.00K
Reported by: Fire Department/Rescue

Ping pong ball size hail damaged vehicles and homes.

Hail in CRAIG, OKLAHOMA
From 04-MAY-20 08:49:00 to 04-MAY-20 08:49:00 (CST-6)
Location: WELCH
Magnitude: 1.75 
Property damage: 15.00K
Crop damage: 0.00K
Reported by: Public

Golf ball size hail damaged vehicles and homes.

Hail in CRAIG, OKLAHOMA
From 04-MAY-20 15:25:00 to 04-MAY-20 15:25:00 (CST-6)
Location: WELCH
Magnitude: 1.75 
Property damage: 15.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Golf ball size hail damaged vehicles and homes.

Hail in ROGERS, OKLAHOMA
From 04-MAY-20 16:20:00 to 04-MAY-20 16:20:00 (CST-6)
Location: FOYIL
Magnitude: 1.75 
Property damage: 15.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Golf ball size hail damaged vehicles and homes.

Hail in MAYES, OKLAHOMA
From 04-MAY-20 16:37:00 to 04-MAY-20 16:37:00 (CST-6)
Location: CHELSEA
Magnitude: 2.00 
Property damage: 20.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Hail larger than golf ball size damaged vehicles and homes.

Hail in OTTAWA, OKLAHOMA
From 04-MAY-20 16:50:00 to 04-MAY-20 16:50:00 (CST-6)
Location: MIAMI
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Hail in MAYES, OKLAHOMA
From 04-MAY-20 16:56:00 to 04-MAY-20 16:56:00 (CST-6)
Location: PRYOR
Magnitude: 1.75 
Property damage: 25.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Golf ball size hail damaged vehicles and homes.

Hail in MAYES, OKLAHOMA
From 04-MAY-20 17:03:00 to 04-MAY-20 17:03:00 (CST-6)
Location: PRYOR
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Hail in OTTAWA, OKLAHOMA
From 04-MAY-20 17:06:00 to 04-MAY-20 17:06:00 (CST-6)
Location: WYANDOTTE
Magnitude: 2.50 
Property damage: 100.00K
Crop damage: 0.00K
Reported by: Public

Tennis ball size hail damaged vehicles, homes, and businesses.

Hail in OTTAWA, OKLAHOMA
From 04-MAY-20 17:08:00 to 04-MAY-20 17:08:00 (CST-6)
Location: MIAMI
Magnitude: 2.75 
Property damage: 25.00K
Crop damage: 0.00K
Reported by: Public

Baseball size hail damaged vehicles and homes.

Thunderstorm Wind in OTTAWA, OKLAHOMA
From 04-MAY-20 17:10:00 to 04-MAY-20 17:10:00 (CST-6)
Location: WYANDOTTE
Magnitude: 65.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Strong thunderstorm wind blew down trees along Highway 10, and along the S 652 Road.

Thunderstorm Wind in MAYES, OKLAHOMA
From 04-MAY-20 17:10:00 to 04-MAY-20 17:10:00 (CST-6)
Location: PRYOR
Magnitude: 52.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Thunderstorm wind gusts were estimated to 60 mph.

Thunderstorm Wind in MAYES, OKLAHOMA
From 04-MAY-20 17:15:00 to 04-MAY-20 17:15:00 (CST-6)
Location: PRYOR
Magnitude: 57.00 EG
Property damage: 5.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Strong thunderstorm wind damaged the roof of a theater in Pryor.

Hail in ROGERS, OKLAHOMA
From 04-MAY-20 17:29:00 to 04-MAY-20 17:29:00 (CST-6)
Location: TIAWAH
Magnitude: 1.75 
Property damage: 25.00K
Crop damage: 0.00K
Reported by: Public

Golf ball size hail damaged vehicles and homes.

Hail in OKMULGEE, OKLAHOMA
From 04-MAY-20 17:29:00 to 04-MAY-20 17:29:00 (CST-6)
Location: PRESTON
Magnitude: 0.75 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Hail in MAYES, OKLAHOMA
From 04-MAY-20 17:39:00 to 04-MAY-20 17:39:00 (CST-6)
Location: BOATMAN
Magnitude: 2.50 
Property damage: 25.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Tennis ball size hail damaged vehicles and homes.

Hail in MAYES, OKLAHOMA
From 04-MAY-20 17:40:00 to 04-MAY-20 17:40:00 (CST-6)
Location: LOCUST GROVE
Magnitude: 2.00 
Property damage: 25.00K
Crop damage: 0.00K
Reported by: Storm Chaser

Hail larger than golf ball size damaged vehicles and homes.

Flash Flood in MAYES, OKLAHOMA
From 04-MAY-20 17:50:00 to 04-MAY-20 20:45:00 (CST-6)
Location: PRYOR
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Several roads were flooded in and around Pryor.

Hail in MAYES, OKLAHOMA
From 04-MAY-20 17:52:00 to 04-MAY-20 17:52:00 (CST-6)
Location: CHOUTEAU
Magnitude: 1.75 
Property damage: 20.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Golf ball size hail damaged vehicles and homes.

Hail in OKFUSKEE, OKLAHOMA
From 04-MAY-20 17:53:00 to 04-MAY-20 17:53:00 (CST-6)
Location: OKEMAH
Magnitude: 1.75 
Property damage: 20.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Golf ball size hail damaged vehicles and homes.

Hail in MAYES, OKLAHOMA
From 04-MAY-20 17:57:00 to 04-MAY-20 17:57:00 (CST-6)
Location: CHOUTEAU
Magnitude: 1.75 
Property damage: 20.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Golf ball size hail damaged vehicles and homes.

Hail in MAYES, OKLAHOMA
From 04-MAY-20 18:01:00 to 04-MAY-20 18:01:00 (CST-6)
Location: MAZIE
Magnitude: 1.75 
Property damage: 15.00K
Crop damage: 0.00K
Reported by: Public

Golf ball size hail damaged vehicles and homes.

Hail in CHEROKEE, OKLAHOMA
From 04-MAY-20 19:25:00 to 04-MAY-20 19:25:00 (CST-6)
Location: HULBERT
Magnitude: 1.50 
Property damage: 20.00K
Crop damage: 0.00K
Reported by: Public

Ping pong ball size hail damaged vehicles and homes.

Hail in ROGERS, OKLAHOMA
From 04-MAY-20 07:17:00 to 04-MAY-20 07:17:00 (CST-6)
Location: CATALE
Magnitude: 1.75 
Property damage: 20.00K
Crop damage: 0.00K
Reported by: Public

Hail in CRAIG, OKLAHOMA
From 04-MAY-20 07:40:00 to 04-MAY-20 07:40:00 (CST-6)
Location: WHITE OAK
Magnitude: 2.00 
Property damage: 20.00K
Crop damage: 0.00K
Reported by: Public

Hail larger than golf ball size damaged vehicles and homes.

Hail in CHEROKEE, OKLAHOMA
From 04-MAY-20 19:36:00 to 04-MAY-20 19:36:00 (CST-6)
Location: TAHLEQUAH
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Hail in CHEROKEE, OKLAHOMA
From 04-MAY-20 19:43:00 to 04-MAY-20 19:43:00 (CST-6)
Location: TAHLEQUAH
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Hail in SEQUOYAH, OKLAHOMA
From 04-MAY-20 20:24:00 to 04-MAY-20 20:24:00 (CST-6)
Location: BOX
Magnitude: 1.50 
Property damage: 15.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Ping pong ball size hail damaged vehicles and homes.

Hail in CRAIG, OKLAHOMA
From 04-MAY-20 07:45:00 to 04-MAY-20 07:45:00 (CST-6)
Location: VINITA
Magnitude: 1.50 
Property damage: 15.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Ping pong ball size hail damaged vehicles and homes.

Hail in CRAIG, OKLAHOMA
From 04-MAY-20 07:52:00 to 04-MAY-20 07:52:00 (CST-6)
Location: VINITA
Magnitude: 2.00 
Property damage: 75.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Hail larger than golf ball size damaged vehicles, homes, and businesses.

Hail in CRAIG, OKLAHOMA
From 04-MAY-20 07:55:00 to 04-MAY-20 07:55:00 (CST-6)
Location: VINITA ARPT
Magnitude: 2.50 
Property damage: 30.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Tennis ball size hail damaged vehicles and homes.

Hail in SEQUOYAH, OKLAHOMA
From 04-MAY-20 21:47:00 to 04-MAY-20 21:47:00 (CST-6)
Location: BRUSHY
Magnitude: 0.75 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Hail in MAYES, OKLAHOMA
From 04-MAY-20 08:05:00 to 04-MAY-20 08:05:00 (CST-6)
Location: DISNEY
Magnitude: 2.50 
Property damage: 150.00K
Crop damage: 0.00K
Reported by: Public

Tennis ball size hail damaged vehicles, homes, and businesses.

Hail in OTTAWA, OKLAHOMA
From 04-MAY-20 08:07:00 to 04-MAY-20 08:07:00 (CST-6)
Location: MIAMI
Magnitude: 2.00 
Property damage: 150.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Hail larger than golf ball size damaged vehicles, homes, and businesses.

Hail in OTTAWA, OKLAHOMA
From 04-MAY-20 08:08:00 to 04-MAY-20 08:08:00 (CST-6)
Location: PICHER
Magnitude: 1.75 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Emergency Manager