MILWAUKEE (AP) -

A mix of rain, sleet and snow in Wisconsin is making travel difficult and has knocked out power to thousands.

We Energies is working on restoring power to nearly 16,000 customers in the Fox Valley. Another 6,400 Wisconsin Public Service customers are also without power in the Oshkosh area.

WBAY-TV reports Appleton Medical Center is running on a backup generator and has canceled all morning cardiac appointments.

The National Weather Service says a series of storms will sweep across the state through Thursday, bringing heavy rain, snow and ice.

Areas north of the Interstate 90-94 corridor could get 6 inches of snow, while areas to the south could see 1 to 3 inches. West central Wisconsin could see a quarter-inch of ice accumulation.

Anywhere from pea size to quarter size hail was reported in the La Crosse area around 9:30 p.m. on Tuesday.