Thunderstorms developed over northeastern New Mexico, southeastern Colorado, and the northwestern Texas Panhandle during the evening hours of the 18th. These storms moved east overnight and affected northeastern Oklahoma during the morning hours of the 19th. Locally heavy rainfall and some flash flooding occurred as these storms moved through the area. Another round of thunderstorms developed during the afternoon hours of the 19th across northeastern Oklahoma as a cold front moved into the area. These storms produced two tornadoes.

Flash Flood in TULSA, OKLAHOMA
From 19-AUG-18 09:32:00 to 19-AUG-18 10:30:00 (CST-6)
Location: GLENPOOL
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Portions of W 121st Street S were flooded near Morris Park.

Tornado in MAYES, OKLAHOMA
From 19-AUG-18 14:45:00 to 19-AUG-18 14:58:00 (CST-6)
Location: MAZIE
Tornado F-scale: EF1
Property damage: 30.00K
Crop damage: 0.00K
Reported by: NWS Storm Survey

This tornado apparently developed near the S425 Road, just north of the E650 Road where large tree limbs were snapped. The tornado moved northeast and damaged a barn on the W640 Road, and damaged or destroyed outbuildings on the W630 Road. Large tree limbs were snapped as the tornado continued to move northeast, apparently dissipating north of the W620 Road and east of the S429 Road. Based on this damage, maximum estimated wind in the tornado was 90 to 100 mph.

Flash Flood in TULSA, OKLAHOMA
From 19-AUG-18 07:31:00 to 19-AUG-18 10:30:00 (CST-6)
Location: ALSUMA
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Portions of S Yale Avenue were flooded between E 51st Street S and E 61st Street S.

Flash Flood in TULSA, OKLAHOMA
From 19-AUG-18 07:39:00 to 19-AUG-18 10:30:00 (CST-6)
Location: ALSUMA
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Portions of S Sheridan Road were flooded between E 41st Street and E 46th Street.

Flash Flood in TULSA, OKLAHOMA
From 19-AUG-18 08:10:00 to 19-AUG-18 10:30:00 (CST-6)
Location: BROKEN ARROW ARPK
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: NWS Employee

Portions of S Mingo Road were flooded between E 101st Street and E 116th Street.

Flash Flood in TULSA, OKLAHOMA
From 19-AUG-18 08:16:00 to 19-AUG-18 10:30:00 (CST-6)
Location: BOZARTH
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Broadcast Media

Portions of S Peoria Avenue were flooded between E 55th Street and E 58th Street.

Tornado in ROGERS, OKLAHOMA
From 19-AUG-18 14:34:00 to 19-AUG-18 14:39:00 (CST-6)
Location: INOLA ARPT
Tornado F-scale: EF1
Property damage: 15.00K
Crop damage: 0.00K
Reported by: NWS Storm Survey

This is the first segment of a two-segment tornado. In Rogers County, this tornado uprooted trees near the intersection of the E610 Road and NS424 Road. The tornado moved northeast, passing over the Oklahoma Mesonet station, which measured 85 mph wind gusts at ten meters above the ground and 98 mph wind gusts at two meters above the ground. An outbuilding was destroyed and a home was damaged as the tornado crossed the E600 Road. Based on the damage in Rogers County, maximum estimated wind in this segment of the tornado was 90 to 100 mph. The tornado continued into Mayes County.

Tornado in MAYES, OKLAHOMA
From 19-AUG-18 14:39:00 to 19-AUG-18 14:55:00 (CST-6)
Location: CHOUTEAU
Tornado F-scale: EF0
Property damage: 20.00K
Crop damage: 0.00K
Reported by: NWS Storm Survey

This is the second segment of a two-segment tornado. In Mayes County, the tornado snapped large tree limbs, tossed horse trailers, damaged outbuildings, and damaged mobile homes as it moved northeast from the W600 Road to north of the W550 Road. Based on this damage, maximum estimated wind in this segment of the tornado was 75 to 85 mph.