A very strong storm system moved across the Southern Rockies into the Southern Plains on the 31st of January and 1st of February. Cold air had surged into the region ahead of this system on the 30th and 31st. Precipitation developed into eastern Oklahoma during the evening of the 31st, beginning as freezing rain and sleet. Most places transitioned to snow fairly quickly although some locations in northeastern Oklahoma and east-central Oklahoma received between one quarter and one half inch of sleet before the transition. Other locations received about one quarter of an inch of ice before changing over to snow. Heavy snow fell during most of the day resulting in more than four inch accumulations north of a Sallisaw to McAlester line. A large portion of northeastern Oklahoma received more than ten inches of snow and a swath of 20 inch snows were measured across Osage, northern Tulsa, Rogers, and Ottawa Counties.
Strong winds frequently gusting to more than 35 mph resulted in near zero visibilities and snow drifts up to about five feet across northeastern Oklahoma. The storm had a crippling impact on the region with interstate highways impassable and closed, the Tulsa International Airport closed, and many businesses shut down for a couple days during and following the storm.
A couple schools experienced collapsed roofs from the weight of the snow as did a casino in the Tulsa area. Boat docks on Grand Lake were destroyed by the weight of the snow, damaging or destroying a number of boats. Damage estimates for that area alone were at $30 million.
The storm's effects on the area lasted days. Hundreds of traffic accidents occurred and numerous vehicles were stranded in the snow. The most notable accident occurred in Ottawa County on February 3rd, the day I-44 was reopened, when an SUV slid on a bridge near Miami, tumbled over the guard rail, and fell over 100 feet into the river below. Three indirect fatalities occurred in this accident along with five indirect injuries.
This storm resulted in a disaster declaration.

Blizzard in NOWATA, OKLAHOMA
From 01-FEB-11 00:00:00 to 01-FEB-11 18:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Seven to sixteen inches of snow fell across the county.

Blizzard in CRAIG, OKLAHOMA
From 01-FEB-11 00:00:00 to 01-FEB-11 18:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Nine to nineteen inches of snow fell across the county.

Blizzard in PAWNEE, OKLAHOMA
From 01-FEB-11 00:00:00 to 01-FEB-11 16:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Twelve to sixteen inches of snow fell across the county.

Blizzard in TULSA, OKLAHOMA
From 01-FEB-11 00:00:00 to 01-FEB-11 18:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Emergency Manager

One half inch of sleet fell early in the event then twelve to sixteen inches of snow fell across the county.

Blizzard in CREEK, OKLAHOMA
From 01-FEB-11 00:00:00 to 01-FEB-11 16:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Twelve to sixteen inches of snow fell across the county.

Winter Storm in OKFUSKEE, OKLAHOMA
From 01-FEB-11 00:00:00 to 01-FEB-11 15:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Seven to fourteen inches of snow fell across the county.

Winter Storm in OKMULGEE, OKLAHOMA
From 01-FEB-11 00:00:00 to 01-FEB-11 16:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Nine to twelve inches of snow fell across the county.

Winter Storm in WAGONER, OKLAHOMA
From 01-FEB-11 00:00:00 to 01-FEB-11 18:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Nine to fourteen inches of snow fell across the county.

Winter Storm in CHEROKEE, OKLAHOMA
From 01-FEB-11 00:00:00 to 01-FEB-11 18:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Emergency Manager

One half to one inch of sleet fell across the county along with five to ten inches of snow.

Winter Storm in ADAIR, OKLAHOMA
From 01-FEB-11 00:00:00 to 01-FEB-11 18:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Four to nine inches of snow fell across much of the county.

Winter Storm in MUSKOGEE, OKLAHOMA
From 01-FEB-11 00:00:00 to 01-FEB-11 18:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Five to twelve inches of snow fell across much of the county.

Winter Storm in MCINTOSH, OKLAHOMA
From 01-FEB-11 00:00:00 to 01-FEB-11 16:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Five to ten inches of snow fell across much of the county.

Winter Storm in SEQUOYAH, OKLAHOMA
From 01-FEB-11 02:00:00 to 01-FEB-11 18:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Four to six inches of snow fell across the western portion of the county.

Winter Storm in PITTSBURG, OKLAHOMA
From 01-FEB-11 00:00:00 to 01-FEB-11 14:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Four to six inches of snow fell across much of the county.

Winter Storm in HASKELL, OKLAHOMA
From 01-FEB-11 02:00:00 to 01-FEB-11 16:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Four to six inches of snow fell across much of the county.

Winter Storm in LATIMER, OKLAHOMA
From 01-FEB-11 02:00:00 to 01-FEB-11 15:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Four to six inches of snow fell across the northern portion of the county.

Winter Storm in LE FLORE, OKLAHOMA
From 01-FEB-11 05:00:00 to 01-FEB-11 18:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Emergency Manager

One half to one inch of sleet fell across portions of the county.

Winter Storm in PUSHMATAHA, OKLAHOMA
From 01-FEB-11 04:00:00 to 01-FEB-11 14:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Emergency Manager

One quarter of an inch of ice fell across portions of the county.

Blizzard in DELAWARE, OKLAHOMA
From 01-FEB-11 00:00:00 to 01-FEB-11 18:00:00 (CST-6)
Property damage: 30.00M
Crop damage: 0.00K
Reported by: Emergency Manager

Twelve to eighteen inches of snow fell across the county. Docks on Grand Lake were destroyed by the weight of the snow, which resulted in numerous boats being damaged or destroyed.

Blizzard in ROGERS, OKLAHOMA
From 01-FEB-11 00:00:00 to 01-FEB-11 18:00:00 (CST-6)
Property damage: 100.00K
Crop damage: 0.00K
Reported by: Emergency Manager

One half inch of sleet fell early in the event then twelve to sixteen inches of snow fell across the county. A roof of the Cherokee Hard Rock Casino in Catoosa collapsed due to the weight of the snow.

Blizzard in MAYES, OKLAHOMA
From 01-FEB-11 00:00:00 to 01-FEB-11 18:00:00 (CST-6)
Property damage: 100.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Twelve to eighteen inches of snow fell across the county. The roof of a warehouse collapsed at the industrial park due to the weight of the snow.

Blizzard in OTTAWA, OKLAHOMA
From 01-FEB-11 00:00:00 to 01-FEB-11 18:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Twelve to nineteen inches of snow fell across the county.

Blizzard in OSAGE, OKLAHOMA
From 01-FEB-11 00:00:00 to 01-FEB-11 18:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Seven to sixteen inches of snow fell across the county.

Blizzard in WASHINGTON, OKLAHOMA
From 01-FEB-11 00:00:00 to 01-FEB-11 18:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Seven to sixteen inches of snow fell across the county.