An interesting weather day on tap for today, plus I’m up early for KXL radio today, so what better time for an early blog?
It’s amazing how little has changed in 3 days. Thermal trough is at the coastline this morning, pulling easterly wind into it. Gorge gradient is 5 millibars this morning…very strong for the warm season. I don’t think I’ve ever seen it go above 6 mbs. between April & October. But my favorite weather tidbit of the day is from Tillamook. 49 degrees with a calm wind at the RAWS station there at 6:10am. At 7:10 it was 70 with an east wind gusting to 15. Thats 21 degrees in one hour! A very warm atmosphere over us too with Timberline near 60 degrees at daybreak.
So we’re all set for a hot day, the only thing to mess with the high is the cloud cover. Abundant high level clouds streaming north out of California this morning; it’s quite a moisture plume. If we don’t get at least partly cloudy skies, 90 will be tough to hit.
All the parameters (high cape, low lifted index, shortwave overhead and thermal trough below) are there for a few thunderstorms this evening. I do think there WILL be scattered thunderstorms this evening or overnight, but of course I can’t tell you where. East side of the valley near Cascades is almost always a better bet (Estacada, Oregon City, Gresham, Troutdale, Camas etc…), but it’s possible to see one almost anywhere.
That will be the last of the east wind this week, so since it’s May, we will stay below 90 the rest of the week. In July/August you don’t need an east wind to get to 90….Stay cool today, Mark