A powerful spring storm has moved eastward out of Colorado, leaving behind fog, wind and drifting snow that's making travel difficult.

The storm left up to 17 inches of snow in the Denver area yesterday before moving east. Winds of 20 miles an hour have been creating drifts up to 5 feet deep.

Denver International Airport is returning to normal. About 300 to 400 stranded travelers spent the night there.

Many schools and government offices are still closed.

The storm is now closing and snarling some major highways in Oklahoma, Texas and Kansas.

Oklahoma Gov. Brad Henry has declared a state of emergency for much of the state.

In Texas, the National Guard has been called out in the panhandle.