A strong ridge of high pressure has set up shop over the West Coast, triggering a Heat Advisory from Bellingham, Washington to Bakersfield, California. In the Northstate, the advisory runs through 11 p.m. Saturday and covers the valley and foothills. Temperatures on Saturday afternoon are expected to be in the triple digits in spots like Redding and Chico, with upper 90s in Trinity County and about 90 elsewhere in the higher terrain.