WASHINGTON, USA — PUGET SOUND FORECAST
Tonight: Clear as cooler air begins to arrive, but still warm. Lows around 60 closer to Puget Sound, to low to mid 50s outside of there.
Thursday: Sunny and cooler, but still warm. Lows around 60. Highs in the upper 70s to upper 80s.
Friday: Partly sunny. Lows in the upper 50s. Highs in the upper 70s to lower 80s.
Saturday-Monday: Mostly cloudy with sunbreaks. Lows in the mid 50s. Highs in the mid 70s.
Wednesday/Thursday: Morning clouds with afternoon sunshine. Much cooler and closer to average highs ( SEA + 78°). Lows in the mid 50s. Highs mostly in the 70s.
Discussion:
Our First Alert Weather status has expired as cooler air begins to arrive across western Washington bringing slight relief from the heat in some spots (more in others) tonight and into the day Thursday.
While the National Weather Service has extended the Heat Advisory for parts of the lowlands through Thursday afternoon, the KING 5 weather team has decided to let the First Alert Weather status expire. That's not to minimize the heat expected Thursday, as highs will still reach the mid to upper 80s closer to Puget Sound, but the worse of the heat will be behind us, as those temperatures will be about 5 to 10 degrees cooler than Wednesday.
Some wildfire smoke has drifted into western Washington, producing some light haze in the sky. Air quality forecasts indicate minimal impact on air quality. A few stations in Puget sound may edge into the moderate range but most will continue to have good air quality today.
The ridge weakens by Thursday and a weather system will brush by to the northeast as it moves through southern British Columbia later Thursday. Once this system passes through, it will increase our onshore winds and knock temperatures back into the 70s and 80s.
Right now it looks like a series of weather systems will drop down the British Columbia coast and brush by to the northeast of our state through the weekend. This will help maintain onshore winds through the weekend for cooler highs in the 70s with morning low clouds and partly sunny skies in the afternoon.