UPDATE 8:48am: Power failures are now being reported in southwest Oklahoma. Interstate 40 is blocked by an accident in far western Oklahoma. It is likely that I-40 will have to be closed before the day is over. I-35 and I-44 will see seriously deteriorating conditions as the day progresses in Oklahoma and there is a chance they will be closed, also.
At 7:13am, the major winter storm is rapidly developing over the southern Plains and is spreading east and north. The purple shades are ice! This is a very serious storm that will cause power interruptions and road closures. Please plan accordingly — there may be power outages in Oklahoma and the southeast Texas Panhandle that will last for days.
Some strong thunderstorms may occur in south Texas.
Future updates available at AccuWeather. We will be updating our coverage throughout the day.