SEATTLE — Ahead of a weekend where temperatures could exceed 90 degrees in parts of western Washington, the National Weather Service (NWS) issued a Heat Advisory and Extreme Heat Warning that took effect Friday. A strong ridge of high pressure to our south will expand its reach across the area raising daytime highs across the Puget Sound region.

Over 30 million people in the US have been under extreme weather alerts since Sunday as a heatwave grips the western part of the country. Excessive heat warnings are in place in parts of California, Oregon,