Strong to severe thunderstorms developed during the early morning hours of August 10th near a stationary frontal boundary that extended across eastern Oklahoma. Strong, damaging winds occurred across much of eastern Oklahoma as these storms moved across the region as well as a tornado.

Tornado in MAYES, OKLAHOMA
From 10-AUG-11 02:32:00 to 10-AUG-11 02:34:00 (CST-6)
Location: LOCUST GROVE
Tornado F-scale: EF1
Property damage: 0.00K
Crop damage: 0.00K
Reported by: NWS Storm Survey

This is the first of three segments of this tornado. The tornado developed on the leading edge of a short convective line of thunderstorms that wasn't undercut by cold outflow. It moved northeast uprooting and snapping a number of large trees within this segment in Mayes County and then moved into the extreme northwestern corner of Cherokee County. Based on the tree damage, maximum estimated wind in this segment of the tornado was about 105 mph.

Tornado in CHEROKEE, OKLAHOMA
From 10-AUG-11 02:34:00 to 10-AUG-11 02:35:00 (CST-6)
Location: PEGGS
Tornado F-scale: EF1
Property damage: 0.00K
Crop damage: 0.00K
Reported by: NWS Storm Survey

This is the second of three segments of this tornado. The tornado tracked northeast across the extreme northwestern corner of Cherokee County, uprooting and snapping numerous trees. Based on the tree damage, maximum estimated wind in this segment of the tornado was about 105 mph. The tornado continued northeastward into Mayes County.

Tornado in MAYES, OKLAHOMA
From 10-AUG-11 02:35:00 to 10-AUG-11 02:39:00 (CST-6)
Location: LOCUST GROVE
Tornado F-scale: EF2
Property damage: 0.00K
Crop damage: 0.00K
Reported by: NWS Storm Survey

This is the third of three segments of this tornado. As the tornado crossed back into Mayes County, it destroyed a double wide mobile home and damaged a single wide mobile home just north of the E590 Road. A woman was killed in the double wide mobile home and two people were injured in the other mobile home. Trees were uprooted and snapped and debris from the double wide mobile home was transported several hundred yards downstream. The tornado damaged another mobile home south of the E580 Road where it destroyed a greenhouse. Numerous trees were uprooted and snapped along the path until the tornado dissipated just south of the E570 Road. Based on this damage, maximum estimated wind in this segment of the tornado was about 125 mph.
August is one of the least active months for tornadoes in this part of the country so the intensity of this tornado was even more unusual. In fact, this is only the 4th strong tornado (EF-2 or EF-3) that has been confirmed in eastern Oklahoma since 1950.

Heavy Rain in TULSA, OKLAHOMA
From 10-AUG-11 02:45:00 to 10-AUG-11 02:45:00 (CST-6)
Location: BROKEN ARROW
Property damage: 0.00K
Crop damage: 0.00K
Reported by: NWS Employee

An off-duty NWS employee measured 3.17 inches of rainfall during a 45 minute period. Street flooding occurred in that area of town.

Thunderstorm Wind in PAWNEE, OKLAHOMA
From 10-AUG-11 00:40:00 to 10-AUG-11 00:40:00 (CST-6)
Location: PAWNEE
Magnitude: 58.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Mesonet

The Oklahoma Mesonet station near Pawnee measured 67 mph thunderstorm wind gusts.

Thunderstorm Wind in OSAGE, OKLAHOMA
From 10-AUG-11 00:52:00 to 10-AUG-11 00:52:00 (CST-6)
Location: HOMINY
Magnitude: 65.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Strong thunderstorm wind blew down trees.

Thunderstorm Wind in OKFUSKEE, OKLAHOMA
From 10-AUG-11 01:09:00 to 10-AUG-11 01:09:00 (CST-6)
Location: OKEMAH
Magnitude: 52.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Strong thunderstorm wind blew down numerous large tree limbs.

Thunderstorm Wind in OSAGE, OKLAHOMA
From 10-AUG-11 01:09:00 to 10-AUG-11 01:09:00 (CST-6)
Location: SKIATOOK
Magnitude: 56.00 EG
Property damage: 5.00K
Crop damage: 0.00K
Reported by: NWS Employee

An off-duty NWS employee reported that strong thunderstorm wind partially tore off a roof of a school building.

Thunderstorm Wind in PAWNEE, OKLAHOMA
From 10-AUG-11 01:13:00 to 10-AUG-11 01:13:00 (CST-6)
Location: CLEVELAND
Magnitude: 65.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Law Enforcement

Strong thunderstorm wind blew down trees.

Thunderstorm Wind in CREEK, OKLAHOMA
From 10-AUG-11 01:39:00 to 10-AUG-11 01:39:00 (CST-6)
Location: SAPULPA
Magnitude: 56.00 EG
Property damage: 3.00K
Crop damage: 0.00K
Reported by: Broadcast Media

A mobile home was damaged by strong thunderstorm wind near Highway 97.

Thunderstorm Wind in ROGERS, OKLAHOMA
From 10-AUG-11 01:50:00 to 10-AUG-11 01:50:00 (CST-6)
Location: CATOOSA
Magnitude: 56.00 EG
Property damage: 10.00K
Crop damage: 0.00K
Reported by: Broadcast Media

The Hard Rock Casino sustained wind damage to the facade of the building.

Thunderstorm Wind in WAGONER, OKLAHOMA
From 10-AUG-11 02:08:00 to 10-AUG-11 02:08:00 (CST-6)
Location: ONETA
Magnitude: 61.00 EG
Property damage: 5.00K
Crop damage: 0.00K
Reported by: NWS Employee

An off-duty NWS employee estimated wind gusts to near 70 mph. Power lines and poles were blown down in the area.

Thunderstorm Wind in WAGONER, OKLAHOMA
From 10-AUG-11 02:10:00 to 10-AUG-11 02:10:00 (CST-6)
Location: NEODESHA
Magnitude: 61.00 EG
Property damage: 2.00K
Crop damage: 0.00K
Reported by: Public

Large tree limbs and power lines were blown down across the 4200 Road just south of Highway 412.

Thunderstorm Wind in ROGERS, OKLAHOMA
From 10-AUG-11 02:10:00 to 10-AUG-11 02:10:00 (CST-6)
Location: INOLA
Magnitude: 61.00 EG
Property damage: 20.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Several outbuildings and garages were damaged by strong thunderstorm winds. The roofs were ripped off some of the buildings.

Thunderstorm Wind in WAGONER, OKLAHOMA
From 10-AUG-11 02:10:00 to 10-AUG-11 02:10:00 (CST-6)
Location: ONETA
Magnitude: 61.00 EG
Property damage: 4.00K
Crop damage: 0.00K
Reported by: Public

Strong thunderstorm wind removed the shingles from the north side of the roof of a home near 81st Street South and 305th East Avenue.

Thunderstorm Wind in MUSKOGEE, OKLAHOMA
From 10-AUG-11 02:14:00 to 10-AUG-11 02:14:00 (CST-6)
Location: MUSKOGEE
Magnitude: 56.00 EG
Property damage: 2.00K
Crop damage: 0.00K
Reported by: Public

Strong thunderstorm wind blew off the roof of a barn.

Thunderstorm Wind in MAYES, OKLAHOMA
From 10-AUG-11 02:40:00 to 10-AUG-11 02:40:00 (CST-6)
Location: CHOUTEAU
Magnitude: 61.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Strong thunderstorm wind gusted to near 70 mph.

Thunderstorm Wind in CHEROKEE, OKLAHOMA
From 10-AUG-11 03:36:00 to 10-AUG-11 03:36:00 (CST-6)
Location: TAHLEQUAH
Magnitude: 65.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Strong thunderstorm wind blew down several trees.

Thunderstorm Wind in LE FLORE, OKLAHOMA
From 10-AUG-11 04:00:00 to 10-AUG-11 04:00:00 (CST-6)
Location: COWLINGTON
Magnitude: 52.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Strong thunderstorm wind blew down large tree limbs.

Thunderstorm Wind in LE FLORE, OKLAHOMA
From 10-AUG-11 04:05:00 to 10-AUG-11 04:05:00 (CST-6)
Location: SPIRO
Magnitude: 56.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Law Enforcement

Strong thunderstorm wind blew down numerous large tree limbs.

Thunderstorm Wind in CREEK, OKLAHOMA
From 10-AUG-11 01:15:00 to 10-AUG-11 01:15:00 (CST-6)
Location: SLICK
Magnitude: 65.00 EG
Property damage: 75.00K
Crop damage: 0.00K
Reported by: Newspaper

Strong thunderstorm wind destroyed a mobile home, injuring six people.

Thunderstorm Wind in TULSA, OKLAHOMA
From 10-AUG-11 01:20:00 to 10-AUG-11 01:20:00 (CST-6)
Location: GARNETT
Magnitude: 52.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: NWS Employee

Strong thunderstorm wind blew down large tree limbs near the National Weather Service Office.

Heavy Rain in TULSA, OKLAHOMA
From 10-AUG-11 02:30:00 to 10-AUG-11 02:30:00 (CST-6)
Location: GARNETT
Property damage: 0.00K
Crop damage: 0.00K
Reported by: NWS Employee

The NWS Office in Tulsa measured 2.80 inches of rainfall in one hour. Minor street flooding occurred in that area of town.