An intense surface low pressure system moved from west to east along the Southern British Columbia border and dragged a cold front through as well. The resulting high winds brought about substantial damage across Eastern Washington....and resulted in widespread power outages and is noted as the most damage seen by Avista utilities  from a natural disaster in its 126-year history with an estimated 180,000 Avista utilities customers without power at peak after the windstorm. Four fatalities (two directly and two indirectly) have been attributed to the windstorm.

High Wind in SPOKANE AREA, WASHINGTON
From 17-NOV-15 14:30:00 to 17-NOV-15 23:45:00 (PST-8)
Magnitude: 51.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Mesonet

A Mesonet station 5 miles west of Mead, WA reported a wind gust of 59 mph at 2:33 PM PST.

High Wind in NORTHEAST MOUNTAINS, WASHINGTON
From 17-NOV-15 14:30:00 to 17-NOV-15 23:45:00 (PST-8)
Magnitude: 50.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

A trained storm spotter reported a tree down over power lines and on a house at 9th and Main in Deer Park, WA.

Dust Storm in MOSES LAKE AREA, WASHINGTON
From 17-NOV-15 14:30:00 to 17-NOV-15 21:00:00 (PST-8)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

A trained spotter reported visibility around one and one half mile from blowing dust 6 miles west of Moses Lake, WA.

Dust Storm in MOSES LAKE AREA, WASHINGTON
From 17-NOV-15 14:40:00 to 17-NOV-15 21:00:00 (PST-8)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

A trained spotter in George, WA reported visibility down to 1/2 mile from blowing dust.

High Wind in EAST SLOPES NORTHERN CASCADES, WASHINGTON
From 17-NOV-15 14:45:00 to 17-NOV-15 23:45:00 (PST-8)
Magnitude: 71.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Mesonet

The mesonet station 2 mile north northwest of Telma, WA reported a wind gust of 82 mph at 3 PM PST.

High Wind in SPOKANE AREA, WASHINGTON
From 17-NOV-15 14:45:00 to 17-NOV-15 23:45:00 (PST-8)
Magnitude: 52.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: AWOS

The AWOS at Fairchild AFB near Airway Heights, WA reported a wind gust of 60 mph at 2:52 PM PST.

High Wind in MOSES LAKE AREA, WASHINGTON
From 17-NOV-15 15:30:00 to 17-NOV-15 23:00:00 (PST-8)
Magnitude: 53.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: ASOS

The ASOS at Moses Lake Airport which is 7 miles north northwest of Moses Lake, WA reported a wind gust of 61 mph at 3:33 PM PST.

High Wind in UPPER COLUMBIA BASIN, WASHINGTON
From 17-NOV-15 15:30:00 to 17-NOV-15 23:45:00 (PST-8)
Magnitude: 53.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Mesonet

A mesonet station 4 miles west northwest of Lind, WA reported a 61 mph wind gust at 3:33 PM PST.

High Wind in SPOKANE AREA, WASHINGTON
From 17-NOV-15 15:50:00 to 17-NOV-15 23:59:00 (PST-8)
Magnitude: 62.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: ASOS

The ASOS at the Spokane International Airport located 3 miles east southeast of Airway Heights, WA reported a wind gust of 71 mph at 3:53 PM PST.

High Wind in EAST SLOPES NORTHERN CASCADES, WASHINGTON
From 17-NOV-15 16:00:00 to 17-NOV-15 22:00:00 (PST-8)
Magnitude: 56.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Mesonet

A mesonet station 2 miles west northwest of Leavenworth, WA reported a wind gust of 64 mph at 4 PM PST.

High Wind in SPOKANE AREA, WASHINGTON
From 17-NOV-15 16:00:00 to 17-NOV-15 23:45:00 (PST-8)
Magnitude: 50.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Newspaper

A newspaper reported that the roof was blown off the Glyph Language service building 1 mile south southwest of Spokane, WA.

High Wind in MOSES LAKE AREA, WASHINGTON
From 17-NOV-15 16:10:00 to 17-NOV-15 23:00:00 (PST-8)
Magnitude: 50.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Law Enforcement

Law enforcement reported multiple accidents and semis tipped over near Moses Lake, WA due to the high wind.

High Wind in UPPER COLUMBIA BASIN, WASHINGTON
From 17-NOV-15 16:15:00 to 17-NOV-15 23:45:00 (PST-8)
Magnitude: 59.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

A member of the public reported that a cinderblock structure with a metal roof collapsed in EdWall, WA due to the high wind.

High Wind in SPOKANE AREA, WASHINGTON
From 17-NOV-15 16:15:00 to 17-NOV-15 23:45:00 (PST-8)
Magnitude: 61.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Mesonet

A mesonet station 1 mile north northwest of Spangle, WA reported a wind gust of 70 mph at 4:15 PM PST.

High Wind in OKANOGAN HIGHLANDS, WASHINGTON
From 17-NOV-15 16:15:00 to 17-NOV-15 23:45:00 (PST-8)
Magnitude: 51.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Mesonet

A mesonet station 4 miles northeast of Lincoln, WA reported a wind gust of 59 mph at 4:15 PM PST.

High Wind in SPOKANE AREA, WASHINGTON
From 17-NOV-15 14:30:00 to 17-NOV-15 23:45:00 (PST-8)
Magnitude: 53.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: ASOS

The ASOS at Spokane International Airport 3 miles east southeast of Airway Heights, WA reported a wind gust of 61 MPH at 2:50 PM PST. The windstorm that resulted in this wind gust resulted in four fatalities. Two direct and two indirect. The two indirect fatalities include  A 66 year old man died from a stroke and was unable to seek help and found on November 29th and the second indirect fatality includes a 70 year old man who died from hypothermia who was discovered on November 22nd. The two direct fatalities include a 54 year old woman who was killed by a falling tree limb on the South Hill of Spokane and a 70 year old woman who died near Cheney after a falling tree hit her car.

High Wind in UPPER COLUMBIA BASIN, WASHINGTON
From 17-NOV-15 12:05:00 to 17-NOV-15 12:06:00 (PST-8)
Magnitude: 51.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Mesonet

A Mesonet station 1 mile southwest of Ritzville, WA reported a 59 mph wind gust.

High Wind in SPOKANE AREA, WASHINGTON
From 17-NOV-15 12:30:00 to 17-NOV-15 23:59:00 (PST-8)
Magnitude: 58.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Broadcast Media

Broadcast media reported power line down near Newport Highway and Greenbluff Road which is 3 miles west of Mead, WA.

High Wind in EAST SLOPES NORTHERN CASCADES, WASHINGTON
From 17-NOV-15 13:00:00 to 17-NOV-15 23:00:00 (PST-8)
Magnitude: 61.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Mesonet

A Mesonet station 5 miles south of Loomis, WA measured a wind gust of 70 MPH.

High Wind in UPPER COLUMBIA BASIN, WASHINGTON
From 17-NOV-15 01:36:00 to 17-NOV-15 23:30:00 (PST-8)
Magnitude: 55.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Mesonet

A Mesonet station 5 miles East-Northeast of Washtucna, WA measured a wind gust of 63 MPH at 1:36 PM PST.

High Wind in EAST SLOPES NORTHERN CASCADES, WASHINGTON
From 17-NOV-15 13:50:00 to 17-NOV-15 23:00:00 (PST-8)
Magnitude: 63.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Mesonet

A Mesonet station on Dirty Face Mountain which is located about 1 mile north northeast of Telma, WA measured a wind gust of 73 MPH at 2 pm PST.

High Wind in EAST SLOPES NORTHERN CASCADES, WASHINGTON
From 17-NOV-15 14:00:00 to 17-NOV-15 23:00:00 (PST-8)
Magnitude: 63.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Mesonet

A Mesonet station 1 mile North Northwest of Telma, WA measured a wind gust of 73 mph at 2 PM PST.

High Wind in SPOKANE AREA, WASHINGTON
From 17-NOV-15 13:00:00 to 17-NOV-15 23:45:00 (PST-8)
Magnitude: 58.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Broadcast Media

Broadcast Media noted that Avista Utilities reported 20,000 customers without power across Eastern Washington and North Idaho. Kootenai Electric reported 10,000 affected customers.

High Wind in WASHINGTON PALOUSE, WASHINGTON
From 17-NOV-15 14:00:00 to 17-NOV-15 23:00:00 (PST-8)
Magnitude: 59.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Mesonet

A Mesonet station 3 miles southwest of Thornton, WA measured a wind gust of 68 mph at 2:01 PM PST.

High Wind in MOSES LAKE AREA, WASHINGTON
From 17-NOV-15 14:00:00 to 17-NOV-15 22:00:00 (PST-8)
Magnitude: 58.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Mesonet

A Mesonet station 3 miles West Southwest of George, WA measured a wind gust of 58 mph at 2:10 PM PST.

Dust Storm in MOSES LAKE AREA, WASHINGTON
From 17-NOV-15 14:12:00 to 17-NOV-15 21:00:00 (PST-8)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

A storm spotter reported that low visibility due to blowing dust closed I-90 between Vantage and George. Spotters repoted 1/2 mile visibility just southeast of Moses Lake and down near 1/4 mile visibility was noted on webcam for Silica Road.

High Wind in MOSES LAKE AREA, WASHINGTON
From 17-NOV-15 14:00:00 to 17-NOV-15 22:00:00 (PST-8)
Magnitude: 63.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Mesonet

A Mesonet station 2 miles West Northwest of Mattawa, WA measured a wind gust of 72 MPH at 2:15 PM PST.

High Wind in EAST SLOPES NORTHERN CASCADES, WASHINGTON
From 17-NOV-15 14:20:00 to 17-NOV-15 23:00:00 (PST-8)
Magnitude: 53.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: RAWS

Leecher RAWS, located 5 miles East of Carlton, WA reported a wind gust of 61 MPH at 2:25 PM PST.

High Wind in MOSES LAKE AREA, WASHINGTON
From 17-NOV-15 14:25:00 to 17-NOV-15 23:00:00 (PST-8)
Magnitude: 71.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Mesonet

A Mesonet station 2 miles west-northwest of Mattawa, WA measured a wind gust of 82 MPH at 2:30 PM PST.