From the National Weather Service, Norman Forecast Office:
Precipitation will be light snow northwest and light freezing rain farther southeast.
Accumulations are expected to remain light through the day, but travel problems may
begin, especially in areas of freezing rain.
After a brief lull, a second round of precipitation will begin Thursday evening
spreading southwest to northeast. Heavier precipitation amounts
are expected: mostly snow in central Oklahoma and freezing rain in southeast Oklahoma.
Precipitation will decrease from west to east on Friday morning, with
some additional accumulation possible.
Following is information recorded at Oklahoma Mesonet weather network