A deep strong low pressure system off the coast provided strong southerly flow to the forecast area.  With a strong upper level jet and associated strong low level jet running perpendicular to the mountain terrain, and a strong surface low that set up over the Washington Basin would tighten the gradients along the Blue Mountain Foothills.  Wind reports in MPH are as followed: Along with multiple reports of damage the Northern Blue Mountain Foothills recorded 9 separate gusts ranging from (58-95), with the strongest gust 1 mile WNW of Cayuse.  8 separate gusts ranging from (59-88) along the Southern Blue Mountain Foothills, with the strongest gust 1 mile NW of Heppner.  A few gusts ranging from (68-75) near Joseph. A couple of gusts of (60) and (71) along the Northern Blue Mountains, with the strongest gust 3 miles WSW Kooskooskie.  A few gusts ranging from (63-70) across the Ochoco and John Day Highlands, with the strongest gust measured at the John Day Airport.  A couple of gusts of (67) and (69) across the Southern Blue Mountains, with the highest gust 5 miles NNE of Fox.  A gust of (60) across the Grand Ronde Valley in Ladd and Pyles Canyon.  A gust of (60) along with a couple reports of damage in Central Oregon, with the wind gust reported at the Redmond Airport.  Additionally there were a couple reports of several tree branches up to 6 inches in diameter across the John Day Valley, as well as a few damage reports with downed trees and power lines for the East Slopes of the Oregon Cascades.

High Wind in FOOTHILLS OF THE NORTHERN BLUE MOUNTAINS OF OREGON, OREGON
From 10-DEC-14 14:54:00 to 11-DEC-14 21:00:00 (PST-8)
Magnitude: 83.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Mesonet

High Wind in GRAND RONDE VALLEY, OREGON
From 10-DEC-14 19:25:00 to 11-DEC-14 21:00:00 (PST-8)
Magnitude: 52.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Mesonet

High Wind in SOUTHERN BLUE MOUNTAINS, OREGON
From 11-DEC-14 08:24:00 to 11-DEC-14 17:00:00 (PST-8)
Magnitude: 60.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Mesonet

High Wind in JOHN DAY BASIN, OREGON
From 11-DEC-14 08:00:00 to 11-DEC-14 17:00:00 (PST-8)
Magnitude: 52.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Several tree branches up to 6 inches in diameter were reported down.

High Wind in FOOTHILLS OF THE SOUTHERN BLUE MOUNTAINS OF OREGON, OREGON
From 11-DEC-14 10:10:00 to 11-DEC-14 17:00:00 (PST-8)
Magnitude: 76.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Mesonet

High Wind in NORTHERN BLUE MOUNTAINS, OREGON
From 11-DEC-14 10:36:00 to 11-DEC-14 21:00:00 (PST-8)
Magnitude: 62.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Mesonet

High Wind in WALLOWA COUNTY, OREGON
From 10-DEC-14 19:17:00 to 11-DEC-14 17:00:00 (PST-8)
Magnitude: 65.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

High Wind in CENTRAL OREGON, OREGON
From 11-DEC-14 11:00:00 to 11-DEC-14 17:00:00 (PST-8)
Magnitude: 52.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: ASOS

High Wind in EAST SLOPES OF THE OREGON CASCADES, OREGON
From 11-DEC-14 10:40:00 to 11-DEC-14 17:00:00 (PST-8)
Magnitude: 56.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Downed power lines and trees 6 to 8 inches in diameter were uprooted on property.

High Wind in OCHOCO-JOHN DAY HIGHLANDS, OREGON
From 11-DEC-14 11:10:00 to 11-DEC-14 17:00:00 (PST-8)
Magnitude: 61.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Mesonet