Rain, Heavy at Times On the Way

First Rain Since June 2nd

By: Jim Willhight

The National Weather Service has issued a Special Weather Statement, about, believe it or not. RAIN!

The Portland office issued the statement (see below) yesterday (8/26) afternoon calling for one-half to one inch on rain this weekend powered by two back to back storms of tropical origin.

The first wave of rainfall is expected to start falling around 4 pm tomorrow with heavier rainfall predicted after 11 pm until 11 am Saturday.  Rain totals of 1/2 inch are predicted for round one of the storms.  

Rain showers are expected from 11 am to 11 pm on Saturday with about 1/10 inch new rain expected before storm two hits around 11 Saturday night. Heavier rains expected to 11 am Sunday morning.  Rain showers are expected until 10 pm Sunday night.  About 1/3 of inch rain is predicted for the second storm.

High temperatures will drop to the mid 70's for the weekend with the storms, but will increase to a very pleasant and fall like upper 70's the first of next week (first week of September).

Cooling Center Status: With the cooler days the opening of the Albany Helping Hands Cooling Center will be determined on a day by day basis.  Here is  more information on cooling center "open" policy. 


SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE PORTLAND OR
232 PM PDT WED AUG 26 2015

SALEM...MCMINNVILLE...WOODBURN...STAYTON...DALLAS... EUGENE...SPRINGFIELD...CORVALLIS...ALBANY.

...The first substantial rain in quite some time expected over Southwest Washington and northwest Oregon late this week and especially this weekend. 

A big change in the weather is expected over southwest Washington and northwest Oregon as the first substantial rain is expected over the area late this week and this weekend. 

This could be the most rain most areas in southwest Washington and northwest Oregon have seen since March. Rainfall accumulations through the weekend could exceed an inch or possibly even 1.5 or 2 Inches along much of the coast with 0.75 to 1.5 inches in the Oregon cascades and 0.5 Inches or higher in the valleys. 

The rain will be produced by the low pressure system currently located off the coast as it moves onshore and inland into the Pacific Northwest later this week and this weekend. This system will be picking up substantial moisture...some of it of tropical Origins...and spreading it across our area beneath a 110 knot upper level jet. The first main period of the heaviest rain will be Friday night into Saturday...but a second system will add to the rainfall totals Saturday night into Sunday. 

If all of this comes together as expected...this rain will likely ease the dry fire conditions dramatically over southwest Washington and northwest Oregon for at least the next week or two. 

The rain will cause problems for those with outdoor activities planned for this weekend. Snow levels will generally stay above 8000 feet...but climbing Area Mountains is not recommended. 

In addition...oils that have built up on roadways during the extensive period of dry weather this summer will cause the roadways to be extra slippery during the first part of the coming rain event. Be sure to slow down and use caution...and leave extra space between you and the vehicle ahead of you.