As multiple low-amplitude upper waves (embedded within broad zonal flow) traversed the Southern Plains, two rounds of convection occurred across the forecast area on the 19th. The first round, from the late morning into early afternoon, included a few reports of marginally severe hail across north-central into eastern Oklahoma, owing to relatively weak instability present during this time frame.
By the early evening, aided by sufficient deep-layer wind shear and increasing (significant in magnitude) convective instability, multiple supercell thunderstorms initiated across southwest Oklahoma. Reports of large to very large hail and wind damage were received across the aforementioned areas. A 'left-split' (supercell) thunderstorm traveled into portions of central Oklahoma, including the southern suburbs of the Oklahoma City Metropolitan area, and produced continued reports of significant hail during the late evening time frame. Additional supercell thunderstorms developed further north across central Oklahoma during the evening as well. While a few reports of large hail were also received with these storms, greater convective inhibition limited the longevity of impact from these thunderstorms.

Hail in PAYNE, OKLAHOMA
From 19-SEP-23 12:24:00 to 19-SEP-23 12:24:00 (CST-6)
Location: STILLWATER
Magnitude: 1.00 
Reported by: Fire Department/Rescue

Hail in CLEVELAND, OKLAHOMA
From 19-SEP-23 20:21:00 to 19-SEP-23 20:21:00 (CST-6)
Location: STELLA
Magnitude: 0.75 
Reported by: Public

MPing report.

Hail in POTTAWATOMIE, OKLAHOMA
From 19-SEP-23 20:29:00 to 19-SEP-23 20:29:00 (CST-6)
Location: DALE
Magnitude: 2.00 
Reported by: Storm Chaser

Video and images relayed via social media showing ping pong ball to hen egg size hail.

Hail in POTTAWATOMIE, OKLAHOMA
From 19-SEP-23 20:38:00 to 19-SEP-23 20:38:00 (CST-6)
Location: SHAWNEE
Magnitude: 1.75 
Reported by: Emergency Manager

Report of quarter to golf ball size hail.

Hail in POTTAWATOMIE, OKLAHOMA
From 19-SEP-23 20:25:00 to 19-SEP-23 20:25:00 (CST-6)
Location: DALE
Magnitude: 1.00 
Reported by: Emergency Manager

Relayed image.

Hail in POTTAWATOMIE, OKLAHOMA
From 19-SEP-23 20:43:00 to 19-SEP-23 20:43:00 (CST-6)
Location: JOHNSON
Magnitude: 2.25 
Reported by: NWS Employee

Images relayed via social media.

Hail in SEMINOLE, OKLAHOMA
From 19-SEP-23 21:05:00 to 19-SEP-23 21:05:00 (CST-6)
Location: LITTLE
Magnitude: 1.00 
Reported by: Broadcast Media

Hail in OKLAHOMA, OKLAHOMA
From 19-SEP-23 20:09:00 to 19-SEP-23 20:09:00 (CST-6)
Location: THE VILLAGE
Magnitude: 1.00 
Reported by: Public

MPing report.

Hail in CANADIAN, OKLAHOMA
From 19-SEP-23 20:44:00 to 19-SEP-23 20:44:00 (CST-6)
Location: YUKON
Magnitude: 1.00 
Reported by: Public

MPing report.

Hail in PAYNE, OKLAHOMA
From 19-SEP-23 12:14:00 to 19-SEP-23 12:14:00 (CST-6)
Location: (SWO)STILLWATER AIRPORT
Magnitude: 0.75 
Reported by: Public

MPing report.

Hail in JACKSON, OKLAHOMA
From 19-SEP-23 17:15:00 to 19-SEP-23 17:15:00 (CST-6)
Location: DUKE
Magnitude: 1.50 
Reported by: Public

Relayed report. Time is radar estimated.

Hail in POTTAWATOMIE, OKLAHOMA
From 19-SEP-23 20:38:00 to 19-SEP-23 20:38:00 (CST-6)
Location: AYDELOTTE
Magnitude: 1.75 
Reported by: Emergency Manager

Hail in POTTAWATOMIE, OKLAHOMA
From 19-SEP-23 20:41:00 to 19-SEP-23 20:41:00 (CST-6)
Location: SHAWNEE
Magnitude: 1.00 
Reported by: Public

MPing report.

Hail in POTTAWATOMIE, OKLAHOMA
From 19-SEP-23 20:35:00 to 19-SEP-23 20:35:00 (CST-6)
Location: MCLOUD
Magnitude: 1.50 
Reported by: Public

MPing report.

Hail in CANADIAN, OKLAHOMA
From 19-SEP-23 19:47:00 to 19-SEP-23 19:47:00 (CST-6)
Location: PIEDMONT
Magnitude: 1.75 
Reported by: Emergency Manager

Relayed images showing quarter to golf ball size hail. Time is radar estimated.

Hail in CANADIAN, OKLAHOMA
From 19-SEP-23 20:51:00 to 19-SEP-23 20:51:00 (CST-6)
Location: YUKON
Magnitude: 1.00 
Reported by: Public

MPing report.

Hail in OKLAHOMA, OKLAHOMA
From 19-SEP-23 20:52:00 to 19-SEP-23 20:52:00 (CST-6)
Location: BETHANY
Magnitude: 0.75 
Reported by: Public

MPing report.

Hail in JACKSON, OKLAHOMA
From 19-SEP-23 17:35:00 to 19-SEP-23 17:35:00 (CST-6)
Location: MARTHA
Magnitude: 1.50 
Reported by: Trained Spotter

Hail in JACKSON, OKLAHOMA
From 19-SEP-23 17:36:00 to 19-SEP-23 17:36:00 (CST-6)
Location: ALTUS
Magnitude: 0.75 
Reported by: Public

MPing report.

Hail in OKLAHOMA, OKLAHOMA
From 19-SEP-23 20:08:00 to 19-SEP-23 20:08:00 (CST-6)
Location: THE VILLAGE
Magnitude: 1.50 
Reported by: Public

Hail in OKLAHOMA, OKLAHOMA
From 19-SEP-23 20:09:00 to 19-SEP-23 20:09:00 (CST-6)
Location: THE VILLAGE
Magnitude: 1.00 
Reported by: Public

Hail in BLAINE, OKLAHOMA
From 19-SEP-23 17:44:00 to 19-SEP-23 17:44:00 (CST-6)
Location: OKEENE
Magnitude: 1.75 
Reported by: Fire Department/Rescue

Relayed image showing ping pong ball to golf ball size hail. Time is radar estimated.

Thunderstorm Wind in TILLMAN, OKLAHOMA
From 19-SEP-23 17:55:00 to 19-SEP-23 17:55:00 (CST-6)
Location: TIPTON ARPT
Magnitude: 50.00 MG
Reported by: Mesonet

Tipton (TIPT) Mesonet observation.

Thunderstorm Wind in COTTON, OKLAHOMA
From 19-SEP-23 18:20:00 to 19-SEP-23 18:20:00 (CST-6)
Location: COOKIETOWN
Magnitude: 65.00 EG
Reported by: Emergency Manager

Relayed images showing wind damage on a farm in the vicinity. The most significant damage occurred to a large metal barn, which had its roof fully removed. Time is radar estimated.

Thunderstorm Wind in TILLMAN, OKLAHOMA
From 19-SEP-23 18:15:00 to 19-SEP-23 18:15:00 (CST-6)
Location: TIPTON ARPT
Magnitude: 64.00 MG
Reported by: Mesonet

Tipton (TIPT) Mesonet observation.

Hail in JACKSON, OKLAHOMA
From 19-SEP-23 18:03:00 to 19-SEP-23 18:03:00 (CST-6)
Location: ELMER
Magnitude: 1.00 
Reported by: Public

MPing report.

Hail in JACKSON, OKLAHOMA
From 19-SEP-23 17:40:00 to 19-SEP-23 17:40:00 (CST-6)
Location: BLAIR
Magnitude: 1.50 
Reported by: Public

Image relayed via social media.

Hail in KIOWA, OKLAHOMA
From 19-SEP-23 18:08:00 to 19-SEP-23 18:08:00 (CST-6)
Location: ROOSEVELT
Magnitude: 2.00 
Reported by: Trained Spotter

Hail in KIOWA, OKLAHOMA
From 19-SEP-23 18:08:00 to 19-SEP-23 18:08:00 (CST-6)
Location: COLD SPRINGS
Magnitude: 1.75 
Reported by: Fire Department/Rescue

Thunderstorm Wind in KIOWA, OKLAHOMA
From 19-SEP-23 18:11:00 to 19-SEP-23 18:11:00 (CST-6)
Location: (HBR)HOBART AIRPORT
Magnitude: 50.00 MG
Reported by: ASOS

Hobart Municipal Airport (KHBR) observation. Outflow boundary wind gust.

Hail in BLAINE, OKLAHOMA
From 19-SEP-23 18:14:00 to 19-SEP-23 18:14:00 (CST-6)
Location: WATONGA
Magnitude: 1.00 
Reported by: Broadcast Media

Hail in CADDO, OKLAHOMA
From 19-SEP-23 18:45:00 to 19-SEP-23 18:45:00 (CST-6)
Location: BOONE
Magnitude: 1.00 
Reported by: Public

Social media video.

Hail in CADDO, OKLAHOMA
From 19-SEP-23 18:49:00 to 19-SEP-23 18:49:00 (CST-6)
Location: FT COBB
Magnitude: 1.00 
Reported by: Public

MPing report.

Hail in CADDO, OKLAHOMA
From 19-SEP-23 18:50:00 to 19-SEP-23 18:50:00 (CST-6)
Location: STECKER
Magnitude: 1.00 
Reported by: Public

MPing report.

Hail in GRADY, OKLAHOMA
From 19-SEP-23 19:40:00 to 19-SEP-23 19:40:00 (CST-6)
Location: TUTTLE
Magnitude: 0.75 
Reported by: Public

MPing report.

Hail in GRADY, OKLAHOMA
From 19-SEP-23 19:45:00 to 19-SEP-23 19:45:00 (CST-6)
Location: TUTTLE
Magnitude: 0.75 
Reported by: Public

MPing report.

Hail in MCCLAIN, OKLAHOMA
From 19-SEP-23 19:48:00 to 19-SEP-23 19:48:00 (CST-6)
Location: NEWCASTLE
Magnitude: 2.00 
Reported by: Fire Department/Rescue

Relayed image showing golf ball to hen egg size hail.

Hail in MCCLAIN, OKLAHOMA
From 19-SEP-23 19:45:00 to 19-SEP-23 19:45:00 (CST-6)
Location: NEWCASTLE
Magnitude: 2.25 
Reported by: NWS Employee

Hail in GRADY, OKLAHOMA
From 19-SEP-23 19:49:00 to 19-SEP-23 19:49:00 (CST-6)
Location: BRIDGE CREEK
Magnitude: 1.00 
Reported by: Public

MPing report.

Hail in CLEVELAND, OKLAHOMA
From 19-SEP-23 19:54:00 to 19-SEP-23 19:54:00 (CST-6)
Location: MOORE
Magnitude: 1.25 
Reported by: Public

MPing report.

Hail in CLEVELAND, OKLAHOMA
From 19-SEP-23 20:00:00 to 19-SEP-23 20:00:00 (CST-6)
Location: (OUN)NORMAN WESTHEIMER ARPT
Magnitude: 1.50 
Reported by: Public

MPing report.

Hail in CLEVELAND, OKLAHOMA
From 19-SEP-23 20:01:00 to 19-SEP-23 20:01:00 (CST-6)
Location: (OUN)NORMAN WESTHEIMER ARPT
Magnitude: 1.25 
Reported by: Public

MPing report.

Hail in CLEVELAND, OKLAHOMA
From 19-SEP-23 20:03:00 to 19-SEP-23 20:03:00 (CST-6)
Location: MOORE
Magnitude: 1.50 
Reported by: Public

MPing report.

Hail in CADDO, OKLAHOMA
From 19-SEP-23 19:05:00 to 19-SEP-23 19:05:00 (CST-6)
Location: ANADARKO
Magnitude: 0.88 
Reported by: Emergency Manager

Hail in CLEVELAND, OKLAHOMA
From 19-SEP-23 20:01:00 to 19-SEP-23 20:01:00 (CST-6)
Location: (OUN)NORMAN WESTHEIMER ARPT
Magnitude: 0.75 
Reported by: Public

MPing report.

Hail in CLEVELAND, OKLAHOMA
From 19-SEP-23 20:07:00 to 19-SEP-23 20:07:00 (CST-6)
Location: (OUN)NORMAN WESTHEIMER ARPT
Magnitude: 0.75 
Reported by: Public

MPing report.

Hail in CLEVELAND, OKLAHOMA
From 19-SEP-23 20:08:00 to 19-SEP-23 20:08:00 (CST-6)
Location: (OUN)NORMAN WESTHEIMER ARPT
Magnitude: 1.00 
Reported by: Public

MPing report.

Hail in CLEVELAND, OKLAHOMA
From 19-SEP-23 20:17:00 to 19-SEP-23 20:17:00 (CST-6)
Location: STELLA
Magnitude: 0.75 
Reported by: Public

MPing report.