UPDATE 12/21/13 8:15 a.m.:
The wind remained light overnight, sparing much of central Oklahoma from widespread power outages.
Conditions on roads in the Oklahoma City metro improved overnight as the temperature increased a degree or two, but authorities are still discouraging travel, especially due to icing on bridges and overpasses.
A winter storm warning remains in effect through 6 a.m. Sunday, with light icing expected through around noon Saturday.
Freezing remain will remain a threat this afternoon in northern Oklahoma, changing to a mix of freezing rain in central parts of the state. In southern Oklahoma, the precipitation will fall as rain.
The Oklahoma City metro will likely experience rain and sleet changing over to snow tonight, with accumulations of a dusting to 1 inch.
Authorities are reporting multiple traffic accidents as elevated roadways across central Oklahoma become covered with ice Friday evening.
A winter storm warning remains in effect for much of the state through 6 a.m. Sunday.
Forecasters say power outages are likely as ice coats power lines and tree limbs. Wind could also lead to the likelihood that many Oklahomans will be without electricity at some point as the storm progresses.
The Oklahoma Highway Patrol reports multiple wrecks on I-40, I-35 and I-235 and is discouraging all travel. Oklahoma City police report more than a dozen accidents across the metro, including at least four where people were hurt.
Traffic cameras show travel at standstill at the intersection of I-35 and I-40 in Oklahoma City. Average speeds across the Interstate system are below 50 miles per hour.
The National Weather Service forecasts ice accumulations up to a half-inch in much of central Oklahoma, including the metro area.
Forecasters say the freezing rain and rain will likely change to snow late Saturday afternoon or evening. Parts of northwest Oklahoma could see 4-to-6 inches of snow before the storm system exits the state.
The Norman forecast office says to not travel in the icy conditions. Authorities say residents should be prepared to safely take care of their household if the power goes out.
Forecasters also say it's important to watch out for falling trees, limbs and power lines.
Many weekend activities are canceled:
KGOU is a community-supported news organization and relies on contributions from readers and listeners to fulfill its mission of public service to Oklahoma and beyond. Donate online, or by contacting our Membership department.