A slow night, although we did get some great pictures from Mt. St. Helens today which we’ll show at 10 & 11pm.
Nice offshore wind event in progress across our area. Pressure difference from North Bend to Spokane has increased from 0 to 6 millibars in the last 24 hours. Easterly wind is coming off the Cascades, into the foothills, and down into the Portland Metro Area. Not exactly a raging wintertime easterly wind, but enough to pop our temperatures up about 10 degrees today. I noticed Battleground went from 35 to 60 from 7am-9am as the wind arrived and mixed down warmer air. That must have felt nice! Low dewpoints continue too, in the 20’s most areas this afternoon.
More of the same tomorrow with a slightly warmer atmosphere means around 3-5 degrees warming. I doubt we’ll hit 80 but it’ll be close. Friday we start with lowest pressure inland, then low-level flow turns westerly during the day. My experience seems to be that in the absence of a major shortwave or front approaching, we have our warmest day since the onshore flow is slow to start. So I stayed with 78 for both tomorrow and Friday.
Still looking for a major marine push Friday night for a much cooler Saturday. Next cold front holds off until Sunday.
A change in the 12z & 18z models today was some ridging by midweek again. So it’s very possible the only wet weather in the next 7+ days will be Sunday & Monday…Mark