A high-amplitude upper trough swept across the Central and Southern Plains on the 4th. The southern branch/maxima of the upper jet provided sufficient synoptic lift that, combined with multiple surface fronts across the area (cold front approaching from northwest with stationary boundary along Red River) aided in widespread strong to severe thunderstorm development in areas along and south of the I-40 corridor. While much of the area remained north of the stationary front during the event, precluding surface-based storm hazards (i.e. wind/tor), strong deep-layer shear and elevated instability still promoted a hail concern with multiple thunderstorms. Early in the event, thunderstorm clusters developing in the warm sector (i.e. along/south of the stationary front) lead to significant wind damage/gusts across portions of southwest Oklahoma (primarily in Tillman County). By the mid to late evening, widespread heavy rainfall, including repeated rounds of heavy convection across southern Oklahoma, lead to reports of flash flooding across these areas.

Thunderstorm Wind in CLEVELAND, OKLAHOMA
From 04-OCT-23 15:45:00 to 04-OCT-23 15:45:00 (CST-6)
Location: (OUN)NORMAN WESTHEIMER ARPT
Magnitude: 52.00 MG
Reported by: AWOS

Norman/Max Westheimer Airport (KOUN) observation.

Hail in CLEVELAND, OKLAHOMA
From 04-OCT-23 15:37:00 to 04-OCT-23 15:37:00 (CST-6)
Location: MOORE
Magnitude: 0.75 
Reported by: Public

MPing report.

Hail in CLEVELAND, OKLAHOMA
From 04-OCT-23 15:49:00 to 04-OCT-23 15:49:00 (CST-6)
Location: (OUN)NORMAN WESTHEIMER ARPT
Magnitude: 0.75 
Reported by: Public

MPing report.

Flash Flood in GARVIN, OKLAHOMA
From 04-OCT-23 16:00:00 to 04-OCT-23 19:00:00 (CST-6)
Location: PAULS VALLEY
Flood cause: Heavy Rain
Property damage: 5.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Relayed video showing street flooding, including at least one vehicle stalled in floodwaters, near the Grant Street and South Chickasaw Street intersection. Time is estimated.

Thunderstorm Wind in CLEVELAND, OKLAHOMA
From 04-OCT-23 15:43:00 to 04-OCT-23 15:43:00 (CST-6)
Location: (OUN)NORMAN WESTHEIMER ARPT
Magnitude: 52.00 EG
Property damage: 5.00K
Reported by: Public

Social media image showing a large tree blown over onto a car. Time is estimated from radar and wind gust observation at nearby Max Westheimer Airport (KOUN) AWOS.

Flash Flood in STEPHENS, OKLAHOMA
From 04-OCT-23 15:00:00 to 04-OCT-23 18:00:00 (CST-6)
Location: COMANCHE
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Report of a car stalled in floodwaters along U.S. Highway 81 near the community of Comanche.

Thunderstorm Wind in TILLMAN, OKLAHOMA
From 04-OCT-23 14:30:00 to 04-OCT-23 14:30:00 (CST-6)
Location: FREDERICK
Magnitude: 70.00 EG
Property damage: 30.00K
Reported by: Emergency Manager

Widespread wind damage occurred in the community of Frederick. The most significant damage was near the intersection of South Main Street and Dahlia Avenue, where a large (older) brick building had its roof and exterior walls collapse. Additional damage included a large barn with total roof collapse, numerous large trees/limbs snapped or blown down and sporadic light roof damage. Time is radar estimated.

Thunderstorm Wind in TILLMAN, OKLAHOMA
From 04-OCT-23 14:12:00 to 04-OCT-23 14:12:00 (CST-6)
Location: FREDERICK
Magnitude: 61.00 EG
Property damage: 20.00K
Reported by: Emergency Manager

Relayed image showing silo and machine shed damage at an agricultural facility. Time is radar estimated.

Thunderstorm Wind in TILLMAN, OKLAHOMA
From 04-OCT-23 14:30:00 to 04-OCT-23 14:30:00 (CST-6)
Location: FREDERICK
Magnitude: 65.00 EG
Property damage: 8.00K
Reported by: Emergency Manager

Multiple power poles blown down near the intersection of U.S. Highway 183 and East 1830 Road. Time is radar estimated.

Hail in CLEVELAND, OKLAHOMA
From 04-OCT-23 15:57:00 to 04-OCT-23 15:57:00 (CST-6)
Location: LAKE THUNDERBIRD DAM
Magnitude: 0.75 
Reported by: Public

MPing report.

Hail in KAY, OKLAHOMA
From 04-OCT-23 09:15:00 to 04-OCT-23 09:15:00 (CST-6)
Location: (PNC)PONCA CITY ARPT
Magnitude: 0.75 
Reported by: Public

MPing report. Based on radar evidence, hailfall likely occurred prior (0910 LST) to report time.

Flash Flood in CARTER, OKLAHOMA
From 04-OCT-23 16:30:00 to 04-OCT-23 19:30:00 (CST-6)
Location: ARDMORE
Flood cause: Heavy Rain
Property damage: 10.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Report of several feet of water on roadways with multiple vehicles stalled in the city of Ardmore. Time is estimated.

Flash Flood in PONTOTOC, OKLAHOMA
From 04-OCT-23 17:30:00 to 04-OCT-23 20:30:00 (CST-6)
Location: ADA
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Report of flash flooding across the southern portions of the city of Ada. Time is estimated.

Hail in CADDO, OKLAHOMA
From 04-OCT-23 13:56:00 to 04-OCT-23 13:56:00 (CST-6)
Location: CYRIL
Magnitude: 0.75 
Reported by: Public

MPing report.

Thunderstorm Wind in TILLMAN, OKLAHOMA
From 04-OCT-23 14:05:00 to 04-OCT-23 14:05:00 (CST-6)
Location: TIPTON ARPT
Magnitude: 63.00 MG
Reported by: Mesonet

Tipton (TIPT) Mesonet observation.

Flash Flood in COMANCHE, OKLAHOMA
From 04-OCT-23 15:00:00 to 04-OCT-23 18:00:00 (CST-6)
Location: LAWTON
Flood cause: Heavy Rain
Property damage: 10.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Social media image and relayed reports showing flooding in/around the city of Lawton. This included multiple vehicles stalled in floodwaters, mainly along Lee and Gore Boulevards. Time is estimated.

Thunderstorm Wind in TILLMAN, OKLAHOMA
From 04-OCT-23 14:10:00 to 04-OCT-23 14:10:00 (CST-6)
Location: TIPTON ARPT
Magnitude: 53.00 MG
Reported by: Mesonet

Tipton (TIPT) Mesonet observation.

Thunderstorm Wind in TILLMAN, OKLAHOMA
From 04-OCT-23 14:15:00 to 04-OCT-23 14:15:00 (CST-6)
Location: TIPTON ARPT
Magnitude: 63.00 MG
Reported by: Mesonet

Tipton (TIPT) Mesonet observation.

Thunderstorm Wind in GREER, OKLAHOMA
From 04-OCT-23 14:15:00 to 04-OCT-23 14:15:00 (CST-6)
Location: BRINKMAN
Magnitude: 65.00 EG
Property damage: 5.00K
Reported by: Public

Social media image showing multiple power poles snapped along U.S. Highway 283. Time is radar estimated.

Thunderstorm Wind in TILLMAN, OKLAHOMA
From 04-OCT-23 14:22:00 to 04-OCT-23 14:22:00 (CST-6)
Location: FREDERICK
Magnitude: 65.00 EG
Reported by: Broadcast Media

Estimated wind gust.

Thunderstorm Wind in TILLMAN, OKLAHOMA
From 04-OCT-23 14:27:00 to 04-OCT-23 14:27:00 (CST-6)
Location: HOLLISTER
Magnitude: 70.00 EG
Reported by: Trained Spotter

Relayed report. Estimated wind gust.

Thunderstorm Wind in TILLMAN, OKLAHOMA
From 04-OCT-23 14:32:00 to 04-OCT-23 14:32:00 (CST-6)
Location: FREDERICK ARPT
Magnitude: 70.00 MG
Reported by: ASOS

Frederick Municipal Airport (KFDR) observation.

Thunderstorm Wind in TILLMAN, OKLAHOMA
From 04-OCT-23 14:38:00 to 04-OCT-23 14:38:00 (CST-6)
Location: FREDERICK ARPT
Magnitude: 74.00 MG
Reported by: ASOS

Frederick Municipal Airport (KFDR) observation.

Hail in COMANCHE, OKLAHOMA
From 04-OCT-23 14:23:00 to 04-OCT-23 14:23:00 (CST-6)
Location: PUMPKIN CENTER
Magnitude: 1.50 
Reported by: Law Enforcement

Thunderstorm Wind in TILLMAN, OKLAHOMA
From 04-OCT-23 14:30:00 to 04-OCT-23 14:30:00 (CST-6)
Location: FREDERICK ARPT
Magnitude: 56.00 MG
Reported by: ASOS

Frederick Municipal Airport (KFDR) observation.

Thunderstorm Wind in TILLMAN, OKLAHOMA
From 04-OCT-23 14:41:00 to 04-OCT-23 14:41:00 (CST-6)
Location: FREDERICK ARPT
Magnitude: 65.00 MG
Reported by: ASOS

Frederick Municipal Airport (KFDR) observation.

Hail in CUSTER, OKLAHOMA
From 04-OCT-23 14:29:00 to 04-OCT-23 14:29:00 (CST-6)
Location: WEATHERFORD
Magnitude: 0.75 
Reported by: Public

MPing report.

Hail in COMANCHE, OKLAHOMA
From 04-OCT-23 15:12:00 to 04-OCT-23 15:12:00 (CST-6)
Location: LAWTON
Magnitude: 0.75 
Reported by: Public

MPing report.

Hail in COMANCHE, OKLAHOMA
From 04-OCT-23 15:17:00 to 04-OCT-23 15:17:00 (CST-6)
Location: LAWTON
Magnitude: 0.75 
Reported by: Public

MPing report.

Hail in MCCLAIN, OKLAHOMA
From 04-OCT-23 15:27:00 to 04-OCT-23 15:27:00 (CST-6)
Location: NEWCASTLE
Magnitude: 1.75 
Reported by: Broadcast Media