Lighter rain Friday; flood advisories for Willamette Valley, coast range

KGW Sunrise forecast 11-25-16

PORTLAND, Ore. -- After a downpour for much of Thanksgiving in the Willamette Valley and coast range, Friday is a little more dry, but still wet enough to make rain gear necessary all day.

On Thanksgiving Day, a wet storm system arrived early Thanksgiving morning and steady rain pounded the metro area and Willamette Valley.

Flood advisories were issued for much of the Willamette Valley, coast ranges and north coast.

Rain was diminishing Friday morning, but KGW meteorologist Chris McGinness said it was expected to return Friday afternoon and last into Saturday. The weekend looks to be wet on-and-off throughout, with high temperatures in the 50s.

Weather alerts

NWS estimates up to 3 inches of rain fell from Wednesday from to Thursday afternoon with the highest amounts in the coast range. Another 1-3 inches was expected Thursday night. 

Portland received between 2-3 inches in the 24-hour span that ended Friday morning, but some areas of the state saw well over 5 inches, according to official reports.

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High water and flooding on highways were reported throughout the Willamette Valley. The Oregon Department of Transportation said that as of 7 p.m. Thursday, there were no closures in the metro area due to flooding.

The steady rain was to end early Friday, replaced by more occasional showers and even a few sun breaks. Another system rolls in later Friday afternoon, promising more steady rain and mountain snows.

The Oregon Department of Geology and Mineral Industries (DOGAMI) reminded drivers to be alert for possible landslides due to the heavy rain.

Elevation charts:   Metro   |   Willamette Valley   |   Cascades/Coast

Cascade snow levels dropped to 4,500 feet Thursday night, with 5-9 inches of snow falling. A Winter Weather Advisory remains in effect until 4 a.m. Friday. A few more inches of snow is expected to fall Friday.

Pass temperatures Thursday and Friday will be cold enough for snow-packed, icy roadways over the Cascades. More than 3 feet of snow is expected to fall by the end of the week. 

Oregon State Police issued the following alert for travelers this week:

For those traveling Oregon's mountain passes, expect snowfall and winter driving conditions. Know when traction tires are required by visiting tripcheck.com. Too often these mountain pass crashes are caused by those not using traction tires. These crashes cause delays that last hours at times. If chains are the traction device, know how to install or use them. Too often we find motorists struggling in deep snow and below freezing conditions attempting to put them on for the first time. 

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Timberline announced a limited early season opening, which started Nov. 19. Mt. Hood Meadows expected to start running lifts on Friday. 

Mt. Bachelor will also be opening on Friday.

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