A strong low pressure system over the Gulf of Alaska brought a strong cold front through.  This generated strong winds across northwest Oregon, and also brought heavy rain which caused flooding on the Tillamook river.  Large seas also caused damage in spots along beaches.

High Wind in NORTHERN OREGON COAST, OREGON
From 17-DEC-18 18:05:00 to 17-DEC-18 22:58:00 (PST-8)
Magnitude: 56.00 MG
Property damage: 10.00K
Crop damage: 0.00K
Reported by: Mesonet

A weather station on Megler Bridge recorded wind gusts up to 65 mph.  Winds also caused power outages impacting 209 customers in Warrenton, according to Pacific Power.

High Wind in CENTRAL COAST RANGE OF W OREGON, OREGON
From 17-DEC-18 22:58:00 to 18-DEC-18 06:12:00 (PST-8)
Magnitude: 55.00 MG
Property damage: 5.00K
Crop damage: 0.00K
Reported by: RAWS

Rockhouse RAWS recorded wind gusts up to 63 mph.  Pacific Power reported an outage affecting 167 customers. A storm spotter in Swiss Home reported that two trees were uprooted by the winds, there were many trees and branches down, and the power was out.

Strong Wind in CENTRAL WILLAMETTE VALLEY, OREGON
From 18-DEC-18 00:00:00 to 18-DEC-18 04:30:00 (PST-8)
Magnitude: 39.00 MG
Property damage: 3.00K
Crop damage: 0.00K
Reported by: Broadcast Media

A large oak tree fell on a house 2 miles NW of McMinnville. The McMinnville ASOS recorded wind gusts up to 45 mph. There were several power outages. A section of a fence was blown over 3 miles WNW of Salem.

Strong Wind in GREATER  PORTLAND METRO AREA, OREGON
From 18-DEC-18 00:00:00 to 18-DEC-18 05:30:00 (PST-8)
Magnitude: 37.00 MG
Property damage: 5.00K
Crop damage: 0.00K
Reported by: Utility Company

Several power outages were reported by PGE.  Peak wind gusts of 35 to 43 mph were recorded across the Portland Metro and north Willamette Valley.

Flood in TILLAMOOK, OREGON
From 18-DEC-18 07:00:00 to 18-DEC-18 11:00:00 (PST-8)
Location: JUNO
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: River/Stream Gage

The Wilson River near Tillamook crested at 12.5 feet around 10 AM, which is 0.5 foot abouve flood stage. No damage was reported.

High Surf in NORTHERN OREGON COAST, OREGON
From 17-DEC-18 17:00:00 to 18-DEC-18 04:00:00 (PST-8)
Property damage: 15.00K
Crop damage: 0.00K
Reported by: Trained Spotter

A trained spotter sent in pictures of damage from two beachfront buildings.  One looks like the beach eroded beneath the decking, which has caused the decking to sag.  The other looks like waves crashed into the bottom floor causing the wall to be pushed inward.

High Wind in CENTRAL OREGON COAST, OREGON
From 18-DEC-18 00:00:00 to 18-DEC-18 06:45:00 (PST-8)
Magnitude: 69.00 MG
Property damage: 15.00K
Crop damage: 0.00K
Reported by: Mesonet

Weather stations along the central Oregon coast reported wind gusts up to 55 to 70 mph. Highest recorded was on the Yaquina Bridge, which recorded wind gusts up to 79 mph.  There were widespread power outages in Depoe Bay and Lincoln City.  ODOT reported trees down on Highway 101, Highway 229, and Route 34 at milepost 5.5.

High Wind in COAST RANGE OF NW OREGON, OREGON
From 17-DEC-18 21:51:00 to 18-DEC-18 05:26:00 (PST-8)
Magnitude: 74.00 MG
Property damage: 2.00K
Crop damage: 0.00K
Reported by: Department of Highways

Oregon Department of Transportation reported trees down on Highway 6 and Highway 18 through the Coast Range.  A weather station on top of Mt Hebo recorded wind gusts up to 85 mph.