A dominant high pressure system remains in place across the western US, bringing very hot and dry conditions. At the same time, monsoon moisture drifting up from Nevada and California is adding some extra clouds.

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.

The Summer is nearing its end, and yet the last couple of days have proven the heat in Chico is far from over.Chico was placed under a heat advisory until 11 P

Temperatures are expected to climb into the upper 80s and lower 90s under sunny skies, with only a slight breeze offering minimal relief. Parts of western Washington are currently under a National Weather Service Heat Advisory or an Extreme Heat Warning.

A heat advisory was released by the National Weather Service on Saturday at 1:56 p.m. in effect until Sunday at 9 p.m. for East Slopes of the Oregon Cascades and Wallowa County.

Heat Advisory extended in Bay Area through Saturday, with temperatures in the 80s to 100s; residents urged to stay cool and hydrated.

The advisory begins at noon Friday and remains in effect through 9 a.m. Saturday, with highs between 99 and 102 degrees expected both days. Overnight lows will stay in the upper 60s. The alert covers the greater Reno-Carson City-Minden area and Mineral and southern Lyon counties.

On Friday at 4:52 a.m. the National Weather Service issued a heat advisory valid from 11 a.m. until Monday 5 a.m. for North Oregon Coast Range and Central Oregon Coast Range.