A 974 millibar surface low moved northward paralleling the coast around 80 miles offshore, and resulted in one of the strongest wind storms that Northwest Oregon had experienced in past several of years. The strongest winds occurred as high pressure filled in behind the low. In this event, the Willamette Valley was just as susceptible to the strong winds as the coast and coast range were.   Most of the injuries, property damage, and power outages occurred in the Willamette Valley, but broken and toppled trees were widespread from the coast to the base of the Cascade foothills.

High Wind in CENTRAL WILLAMETTE VALLEY, OREGON
From 11-DEC-14 13:30:00 to 11-DEC-14 16:58:00 (PST-8)
Magnitude: 53.00 MG
Property damage: 11.00K
Crop damage: 0.00K
Reported by: Official NWS Observations

Strong winds resulted in several downed trees and power outages. One tree damaged the roof of a home in Dayton.  Peak wind gusts for the Aurora and McMinnville Airports measured at 61 mph, and wind a peak wind gust of 71 mph was measured at Chehalem Mountain.

High Wind in SOUTHERN WILLAMETTE VALLEY, OREGON
From 11-DEC-14 13:00:00 to 11-DEC-14 14:30:00 (PST-8)
Magnitude: 35.00 MS
Property damage: 5.00K
Crop damage: 0.00K
Reported by: Official NWS Observations

Sustained winds of 40 mph were reported at the Eugene Airport, but there were reports of at least 3 large trees downed. One of these trees fell on top of a SUV in Albany. The strong winds also resulted in numerous power outages in the Corvallis area.

High Wind in NORTHERN OREGON COAST, OREGON
From 11-DEC-14 15:30:00 to 11-DEC-14 18:45:00 (PST-8)
Magnitude: 54.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Official NWS Observations

Four weather stations along the North Oregon coast reported sustained winds between 37 and 51 mph in the afternoon on December 11th. The highest wind gust was 63 mph  reported at Garibaldi.

High Wind in CENTRAL OREGON COAST, OREGON
From 11-DEC-14 12:19:00 to 11-DEC-14 17:23:00 (PST-8)
Magnitude: 59.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Official NWS Observations

Ten weather stations measured sustained winds greater than 38 mph with gusts greater than 58 mph. The highest gust of 9 mph was from the Sea Lion Caves with the second highest of 76 mph reported from a National Weather Service Spotter located in Newport. Numerous power outages were reported.

High Wind in CENTRAL COAST RANGE OF W OREGON, OREGON
From 11-DEC-14 14:12:00 to 11-DEC-14 17:12:00 (PST-8)
Magnitude: 55.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Park/Forest Service

The Rockhouse RAWS measured a maximum gust of 63 mph in the early evening. A national Weather Service Spotter also reported shingle damage to their roof and observed small tree limbs downed by the wind.

High Wind in LOWER COLUMBIA, OREGON
From 11-DEC-14 15:30:00 to 11-DEC-14 16:30:00 (PST-8)
Magnitude: 35.00 MS
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Department of Highways

A Department of Transportation sensor measured sustained winds of 40 mph on Sauvie Island.

High Wind in GREATER  PORTLAND METRO AREA, OREGON
From 11-DEC-14 14:30:00 to 11-DEC-14 17:53:00 (PST-8)
Magnitude: 58.00 MG
Property damage: 80.00K
Crop damage: 0.00K
Reported by: Official NWS Observations

Gusty strong winds resulted in several downed trees for the Portland Metro Area. There were widespread road closures and power outages due to the downed trees. One fatality and one injury resulted from a tree falling onto a moving car. The Portland International Airport experienced re routing and delays of aircraft, and the Portland Mass Transit, MAX system had system-wide delays due to power outages. In downtown Portland, loose material from a roof of a nearby building were lofted and blown against windows of the Standard Insurance Plaza damaging several windows on the fifteenth floor. A Parapet of a Portland apartment in NW Portland fell and caused major damage to the apartment building. At least one power pole was downed by the winds in Washington County. A large tree fell onto a moving car injuring a mother and killing her son.

High Wind in COAST RANGE OF NW OREGON, OREGON
From 11-DEC-14 14:00:00 to 11-DEC-14 15:00:00 (PST-8)
Magnitude: 78.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Amateur Radio

A HAM Radio operator reported that Mount Hebo measured a peak gust of 90 mph. Another weather station near Forest Grove reported a gust of 58 mph.