The National Weather Service has downgraded the “winter storm watch” it issued this morning to a “winter weather advisory,” and is now forecasting snow accumulation of one to three inches on Thursday.

The agency initially predicted up to four inches of snow in the interior lowlands.

The advisory will be in effect from about 4 p.m. Thursday to 8 a.m. Friday. A cold front will move from south to north resulting in snow showers around Puget Sound.

Snowfall is expected to change to rain, beginning first in southern counties and progressively moving north. Rain should be everywhere by Friday morning.