A potent storm system will move into Western Washington starting Friday, bringing heavy rain, strong winds, and mountain snow. Light showers are expected today as a weaker system moves through, but a stronger front will hit by Friday morning, intensifying through the weekend. The storm will bring gusty winds up to 40 mph, especially along the coast, and coastal flooding is possible with 2-3 feet of inundation. Snow levels will drop to as low as 2000 feet, with light accumulations in the mountains. The storm will continue through Sunday, with high surf and waves of up to 18 feet along the Pacific coast.