We really lost the surface easterly flow today, in fact when I drove through Corbett, at the west end of the Gorge, it was calm around 11am.
So I think it's somewhat amazing that we still made it into the low 100s in the middle of August with no east wind in the metro area. That's a really hot airmass! I see Timberline Lodge made it to 82 degrees, that's the warmest I think I've ever seen on that sensor.
No significant changes for tomorrow. Obviously the marine seepage is pumping humidity into our hot airmass; dewpoints have been rising this evening. But the large-scale easterly flow continues through the day tomorrow, so I don't expect any major cooling push tomorrow until after peak heating time.
Models have come together on a strong shortwave swinging northeast through the region Sunday night and Monday AM. This might be a great setup for a quick thunderstorm outbreak…something to keep an eye on for the next day or so. This type of a shortwave moving through Eastern Oregon has brought a severe weather outbreak several times in my forecasting life here in Portland.
Okay, time to go…I'll be on vacation, one last time, Monday-Wednesday. Next post will be Thursday…unless it gets really exciting Sunday night…Mark Nelsen