July Ends Very Warm…or Hot

July 25, 2014

It’s another Friday evening and the weather is about the slowest we get here.  Nearly constant sunshine above 2,000′ and south or east of the Portland metro area for the next 5-7 days.  Occasional low clouds will push onto the coastline and up the Columbia River from Longview to Portland.  That’ll be mainly tomorrow morning and then again later next week.  Here’s a nice view of the eastside low clouds this morning from our newly upgraded Skyline Camera.

We finally installed an HD camera up there a few weeks ago and the view is much better.  I would sure like a weather sensor up there before winter too…we’ll see.

The reason for the slow weather in the upcoming week is a return of the upper level ridge in the Western USA.  The center of the high will remain over Nevada or Southern Idaho, which means we won’t get a sharp thermal trough and offshore flow in the next week.  As a result, high temperatures along the Columbia River from Longview to the Portland metro area won’t get much above 90 degrees.  The warmest temperature we have on our 7 day forecast as of Friday evening is 92.    You can see the ECMWF model’s meteogram (over Portland) showing gradually rising temperatures through midweek then cooling late week.

KPDX_2014072512_dx_240

But if you live in Salem or farther south in western Oregon, farther removed from the marine air, high temps will make it into the mid 90s.  Of course east of the Cascades will be HOT.  Sunday through the rest of next week will see high temps around 100-105 at the lowest elevations and 80s even high up in the mountains.  This will be the 2nd heat wave of the summer over there.

Enjoy the weekend and stay cool next week!

Chief Meteorologist Mark Nelsen