Hazy, Smoky, & Hot Afternoon Ahead; Showers Monday Morning

September 7, 2012

It sure won’t hit 80 at the Coast today, but we’ll easily go into the lower 90s here in the western valleys of Oregon and SW Washington.

Once again, a weak surge of low clouds and fog has made it almost all the way up the coastline this morning, so no 80s there.  That’s always such a tough forecast when the hot northeast wind makes it almost to the beaches but not quite there. 

Inland, we’ve got 3-4 millibars easterly pressure gradient through the Columbia River Gorge.  That’s stronger easterly flow than yesterday, so most of the east side of the metro area will have breezy conditions by midday.  It’s gusting up around 40-45 mph right now at Vista House.  Very smoky out there as well from the fire in the eastern Gorge.

The lower atmosphere over us has warmed about 6 degrees too, which means 90-95 degree temps should be widespread around 4-5pm in the metro area.  These won’t be records because in September 1981 on this date we hit 99!  The disturbing part is that I clearly remember that hot day.  I was in 7th grade at Monitor Elementary and a friend’s mother was paying us to tie hop vines or something like that into wreaths.  We did that after school out in the hot sun, then I puked after drinking black cherry coke during a break.  Apparently it was too warm for working outside or I was a heat weenie?  Vivid memories…

Anyway, we’re all set up for a hot afternoon.

Models are showing actual light rain over and west of the Cascades north of Eugene between 1am-10am Monday.  Here’s our RPM rain forecast from the 12z run.   The NAM is similar.  The cooldown is going to be dramatic too.  We may only be in the 60s Sunday and/or Monday with lots of cloud cover.  A big marine push Saturday night means cloud cover Sunday morning.  Once the low clouds are in here Sunday morning, it might be tough to get rid of them; thus the possible 60s for highs.

It’s back to summery weather the rest of next week.  We might see 90 degree temps again next Thursday or Friday.

Chief Meteorologist Mark Nelsen