A complex of thunderstorms developed over northeastern Oklahoma during the evening hours of the 10th as a cold front moved into the region. These storms produced large hail and damaging wind gusts as they moved across northeastern Oklahoma.

Thunderstorm Wind in WASHINGTON, OKLAHOMA
From 10-AUG-17 18:19:00 to 10-AUG-17 18:19:00 (CST-6)
Location: COPAN
Magnitude: 61.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Strong thunderstorm wind gusts were estimated to 70 mph.

Thunderstorm Wind in WASHINGTON, OKLAHOMA
From 10-AUG-17 18:25:00 to 10-AUG-17 18:25:00 (CST-6)
Location: COPAN
Magnitude: 63.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Mesonet

The Oklahoma Mesonet station near Copan measured 73 mph thunderstorm wind gusts.

Thunderstorm Wind in WASHINGTON, OKLAHOMA
From 10-AUG-17 18:30:00 to 10-AUG-17 18:30:00 (CST-6)
Location: COPAN
Magnitude: 65.00 EG
Property damage: 30.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Strong thunderstorm wind severely damaged the roofs of three homes east of Copan.

Thunderstorm Wind in WASHINGTON, OKLAHOMA
From 10-AUG-17 18:30:00 to 10-AUG-17 18:30:00 (CST-6)
Location: COPAN
Magnitude: 61.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Mesonet

The Oklahoma Mesonet station near Copan measured 70 mph thunderstorm wind gusts.

Thunderstorm Wind in WASHINGTON, OKLAHOMA
From 10-AUG-17 18:32:00 to 10-AUG-17 18:32:00 (CST-6)
Location: COPAN
Magnitude: 61.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Amateur Radio

Strong thunderstorm wind was estimated to 70 mph.

Thunderstorm Wind in WASHINGTON, OKLAHOMA
From 10-AUG-17 18:35:00 to 10-AUG-17 18:35:00 (CST-6)
Location: DEWEY WAYSIDE ARPT
Magnitude: 56.00 EG
Property damage: 2.00K
Crop damage: 0.00K
Reported by: Amateur Radio

Strong thunderstorm wind blew down power lines and snapped large tree limbs near the W1100 Road and Highway 75 intersection.

Thunderstorm Wind in WASHINGTON, OKLAHOMA
From 10-AUG-17 18:35:00 to 10-AUG-17 18:35:00 (CST-6)
Location: DEWEY
Magnitude: 61.00 EG
Property damage: 25.00K
Crop damage: 0.00K
Reported by: Public

Strong thunderstorm wind severely damaged a large metal barn.

Thunderstorm Wind in WASHINGTON, OKLAHOMA
From 10-AUG-17 18:36:00 to 10-AUG-17 18:36:00 (CST-6)
Location: COPAN
Magnitude: 61.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Strong thunderstorm wind was estimated to 70 mph.

Thunderstorm Wind in WASHINGTON, OKLAHOMA
From 10-AUG-17 18:36:00 to 10-AUG-17 18:36:00 (CST-6)
Location: COPAN
Magnitude: 61.00 EG
Property damage: 5.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Strong thunderstorm wind blew down trees and power lines along Highway 10 and Highway 75.

Thunderstorm Wind in WASHINGTON, OKLAHOMA
From 10-AUG-17 18:40:00 to 10-AUG-17 18:40:00 (CST-6)
Location: DEWEY WAYSIDE ARPT
Magnitude: 56.00 EG
Property damage: 2.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Strong thunderstorm wind blew down power lines near W1100 Road and N 4000 Road.

Thunderstorm Wind in NOWATA, OKLAHOMA
From 10-AUG-17 18:55:00 to 10-AUG-17 18:55:00 (CST-6)
Location: NOWATA
Magnitude: 65.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Broadcast Media

Strong thunderstorm wind uprooted a large tree.

Hail in NOWATA, OKLAHOMA
From 10-AUG-17 19:00:00 to 10-AUG-17 19:00:00 (CST-6)
Location: WATOVA
Magnitude: 2.00 
Property damage: 15.00K
Crop damage: 0.00K
Reported by: Public

Thunderstorm Wind in WASHINGTON, OKLAHOMA
From 10-AUG-17 19:01:00 to 10-AUG-17 19:01:00 (CST-6)
Location: DEWEY
Magnitude: 61.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Strong thunderstorm wind blew down trees across Highway 60 near the N 4000 Road.

Hail in ROGERS, OKLAHOMA
From 10-AUG-17 19:40:00 to 10-AUG-17 19:40:00 (CST-6)
Location: FOYIL
Magnitude: 1.25 
Property damage: 5.00K
Crop damage: 0.00K
Reported by: Public

Thunderstorm Wind in MAYES, OKLAHOMA
From 10-AUG-17 20:49:00 to 10-AUG-17 20:49:00 (CST-6)
Location: PRYOR
Magnitude: 65.00 EG
Property damage: 30.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Strong thunderstorm wind destroyed an unoccupied mobile home, blew down power poles and trees, and destroyed two barns in the Osage area.

Thunderstorm Wind in TULSA, OKLAHOMA
From 11-AUG-17 03:15:00 to 11-AUG-17 03:15:00 (CST-6)
Location: GARNETT
Magnitude: 65.00 EG
Property damage: 5.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Strong thunderstorm wind uprooted trees and blew down power poles near S 145th East Avenue and E Marshall Street.