A strong, but fast-moving disturbance moved toward the southern Plains late on the 19th. At the same time, an arctic cold front moved south, with very cold temperatures behind the boundary moved south through Oklahoma. Cloud cover thickened during the afternoon and evening hours of the 19th, keeping temperatures near freezing over northern Oklahoma for much of the day. Not much in the way of precipitation had developed until mid evening, when radar echoes began blossoming across northern Oklahoma. Snow, sleet, and freezing drizzle began affecting areas from Woodward, to Enid, and to Stillwater by around 10 pm, but transitioned to all snow shortly after. Under the more persistent snow bands totals reached as high as 4 inches. Further south, the arctic front quickly moved toward the Red River. Light, but widespread precipitation developed over central and southwest Oklahoma. For the first several hours, much of the precipitation fell as freezing drizzle, which occasionally mixed with light snow. A thin coating of ice accumulated on area roadways, which significantly disrupted the morning commute. Hundreds of accidents occurred state-wide, three of which involved fatalities. The precipitation began to transition to all snow over all areas beginning around sunrise, and quickly came to an end from west to east. The main affects of the storm system had moved east by late morning, with much of the region seeing the sun by mid to late afternoon. Even with the sun, however, the temperatures generally remained in the 20s and lower 30s.
Another significant occurrence with this event was the very cold wind chills. North winds of 15 to 20 mph, with gusts of 30 to 35 mph were common for a good part of the day. With temperatures in the upper teens and 20s, minimum wind chills ranged from 5 to -5 degrees near and north of Interstate 40, to 5 to 15 degrees across the south. The wind also created areas of blowing/drifting snow over northern Oklahoma, which briefly reduced visibilities below one mile at times. The combination of snow/ice, temperatures, and gusty north winds made for an all-around nasty day over Oklahoma and western North Texas. For more information on the Wind Chill Index, you can click here.

Winter Weather in GARFIELD, OKLAHOMA
From 19-JAN-11 21:00:00 to 20-JAN-11 07:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Other Federal Agency

Around 2.5 inches of snow accumulated at Vance Air Force Base.

Winter Weather in GARFIELD, OKLAHOMA
From 19-JAN-11 21:00:00 to 20-JAN-11 07:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Around 1.5 inches of snow accumulated in and around Enid.

Winter Weather in KAY, OKLAHOMA
From 19-JAN-11 21:00:00 to 20-JAN-11 07:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: COOP Observer

The observer at Ponca City measured 3.2 inches of snow.

Winter Weather in KAY, OKLAHOMA
From 19-JAN-11 21:00:00 to 20-JAN-11 07:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: COOP Observer

One inch of snow was measured 1 mile northwest of Newkirk.

Winter Weather in WOODWARD, OKLAHOMA
From 19-JAN-11 21:00:00 to 20-JAN-11 07:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: COOP Observer

One inch of snow was measured at Mutual.

Winter Weather in HARPER, OKLAHOMA
From 19-JAN-11 21:00:00 to 20-JAN-11 07:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Law Enforcement

Around 3 inches of snow accumulated at Buffalo.

Winter Weather in HARPER, OKLAHOMA
From 19-JAN-11 21:00:00 to 20-JAN-11 07:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: COOP Observer

Two inches of snow accumulated at Laverne.

Winter Weather in MAJOR, OKLAHOMA
From 19-JAN-11 21:00:00 to 20-JAN-11 07:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: COOP Observer

Three and a half inches of snow accumulated at Ames.

Winter Weather in KINGFISHER, OKLAHOMA
From 19-JAN-11 21:00:00 to 20-JAN-11 07:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: COOP Observer

Two and a half inches of snow accumulated 4 miles east-southeast of Hennessey.

Winter Weather in MAJOR, OKLAHOMA
From 19-JAN-11 21:00:00 to 20-JAN-11 07:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: COOP Observer

Two inches of snow accumulated 1 mile south-southwest of Orienta.

Winter Weather in DEWEY, OKLAHOMA
From 19-JAN-11 21:00:00 to 20-JAN-11 07:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: COOP Observer

One and a half inches of snow accumulated at Taloga.

Winter Weather in PAYNE, OKLAHOMA
From 19-JAN-11 21:00:00 to 20-JAN-11 07:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: COOP Observer

Two inches of snow accumulated at Ingalls.

Winter Weather in GRANT, OKLAHOMA
From 19-JAN-11 21:00:00 to 20-JAN-11 07:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: COOP Observer

Four inches of snow accumulated at Lamont.

Winter Weather in GRANT, OKLAHOMA
From 19-JAN-11 21:00:00 to 20-JAN-11 07:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: COOP Observer

Three inches of snow accumulated at Jefferson.

Winter Weather in DEWEY, OKLAHOMA
From 19-JAN-11 21:00:00 to 20-JAN-11 07:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: COOP Observer

The observer at Vici measured 2.1 inches of snow.

Winter Weather in KAY, OKLAHOMA
From 19-JAN-11 21:00:00 to 20-JAN-11 07:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: COOP Observer

Three inches of snow accumulated at Blackwell.

Winter Weather in KAY, OKLAHOMA
From 19-JAN-11 21:00:00 to 20-JAN-11 07:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: COOP Observer

The observer at Braman measured 2.6 inches of snow.

Winter Weather in ALFALFA, OKLAHOMA
From 19-JAN-11 21:00:00 to 20-JAN-11 07:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: COOP Observer

Three inches of snow accumulated one mile south-southeast of Helena.

Winter Weather in NOBLE, OKLAHOMA
From 19-JAN-11 21:00:00 to 20-JAN-11 07:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: COOP Observer

The observer at Perry measured 2.8 inches of snow.

Winter Weather in PAYNE, OKLAHOMA
From 19-JAN-11 21:00:00 to 20-JAN-11 07:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: COOP Observer

The observer two miles west of Stillwater measured 1.2 inches of snow.

Winter Weather in SEMINOLE, OKLAHOMA
From 20-JAN-11 04:00:00 to 20-JAN-11 12:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: COOP Observer

One inch of snow was measured at Seminole.

Winter Weather in MARSHALL, OKLAHOMA
From 20-JAN-11 06:00:00 to 20-JAN-11 12:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Law Enforcement

A light coating of ice from freezing drizzle resulted in several accidents across Marshall county. Unfortunately, one of the accidents resulted in a fatality. The accident occurred at 8:22 am on US Highway 70, 0.8 miles west of Oakland.

Winter Weather in CARTER, OKLAHOMA
From 20-JAN-11 06:00:00 to 20-JAN-11 12:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Law Enforcement

A light coating of ice from freezing drizzle resulted in several accidents across Carter county. Unfortunately, one of the accidents resulted in a fatality. The accident occurred at approximately 7:40 am on US Highway 77, 1.5 miles south of Ardmore.

Winter Weather in ROGER MILLS, OKLAHOMA
From 19-JAN-11 21:00:00 to 20-JAN-11 07:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Around 3 inches of snow accumulated 10 miles north-northeast of Durham. Lighter amounts were reported across the central and southern portions of the county. Several accidents occurred as a result of slipper roadways. Unfortunately, one of the accidents resulted in a fatality. The automobile collision occurred around 3:15 am, 8.8 miles south of Cheyenne on US Highway 283.