I love summer, but I guess all good things have to end. This is the last weekend of August. That means next weekend is September, Jerry Lewis Telethon here at KPTV, the kids go back to school right after that etc…
So I guess we end with more heat. Weak thermal trough develops near the Cascade Foothills tomorrow, then shifts into the Valley for all day Sunday. I expect about 5 degrees warming tomorrow and maybe another 2-4 on Sunday. Then a quick drop Monday as onshore flow kicks in strongly during the afternoon ahead of a trough. Our RPM model here (and UW-MM5) shows at best a 1-2 mb. easterly gradient through the Gorge. East wind will only be felt in the Cascades and west end of the Gorge. Mostly likely it won’t even make it to Troutdale Sunday. We are entering the season (late August-October) where east winds start to strengthen and during warm spells will spread out across the metro area. But this is not a good east wind event.
Tomorrow and Sunday will be days 17 & 18 above 90 degrees this summer. The record is 23 days.
Stay cool and enjoy one more sunny weekend…Mark