More snow is expected in Southern Oregon's mountains Tuesday as another storm sweeps across the region.

More snow is expected in Southern Oregon's mountains Tuesday as another storm sweeps across the region.

The forecast calls for 3 to 8 inches of snow to fall in the Cascades and Siskiyous. Snow levels will drop to between 3,000 and 3,500 feet and the lowest part of those elevations likely will get 1 to 4 inches of snow, with more at higher elevations, said Dan Weygand, a meteorologist at the National Weather Service office in Medford.

Working on the forecast this morning, Weygand said he expects to issue a snow advisory for the Southern Oregon mountains Tuesday afternoon and evening. Gusty winds could blow in before the front arrives, the forecast stated.

Rain is likely in the valleys as this storm moves through.

Precipitation will diminish to scattered showers on Wednesday, but another, stronger storm also lurks on the horizon. Another front approaches Oregon on Thursday, but the brunt of that storm could hit farther north, pounding Portland.

"It's uncertain how strong it will be here," Weygand said.

However, Thursday's storm could bring heavy rains to the coast, drenching areas as far inland as Josephine County. Some snow and rain likely will fall in Jackson County. Snow levels are expected to be between 4,500 and 5,000 feet, slightly above the elevation of the Siskiyou Summit, but forecasters will watch closely in an effort to keep holiday travelers well informed, Weygand said. Mountaintops could get another 3 to 8 inches.