East Slopes Northern Cascades storm history
Storm events recorded in East Slopes Northern Cascades, Washington between 1950 and 2025.
442
Total events
0
Tornadoes
0
Hail
1
Floods
8
Deaths
$109.9M
Property damage
Most significant events
Strongest tornadoes, deadliest events, and biggest damage in this county. Up to 50 shown.
On January 23rd, near Blewett Pass, snow slid off the roof of a US Forest Service building onto an employee, burying her. Emergency officials were unable to revive her. Five inches of snow fell in the area on January 23. At the time of the avalanche, an estimated 28 inches of sno…
Two men were found dead near a wrecked Jeep off a snowy Forest Service road in the Derby Canyon area. Reports state the two men were going for a drive in an all-wheel-drive jeep along primitive roads that had snow two feet deep in places. The vehicle was found on Thursday about 7…
Roads that were closed due to downed trees included: Cedar Brae, River Road, Shugart Flats, Chiwawa Loop, Baraburn, Cottonwood, and Highway 2 along a 35 mile stretch between Stevens Pass and Leavenworth. The highway is one of two primary east-west routes through the mountains ope…
Around 4,000 lightning strikes on September 8th through the 9th sparked around 100 wildfires north and west of Wenatchee. The vast size of the complex of wildfires burning across this area combined with the very dry conditions, resulted in these fires continuing to burn into the …
A 28 year old male skier triggered an avalanche at the top of Hooky Bowl located near Mt. Cashmere. The slab depth, at the point where the avalanche was triggered, was just over a half a foot in depth and increased in depth up to three and one quarter foot. The horizontal dimensi…
The McCleod Wildfire 10 miles north of Mazama was started by lightning and first reported on August 11th. The fire grew to 24,411 acres, consuming mostly timber in unpopulated mountainous terrain before being largely contained by mid September. No structures were lost but some ba…
The Crescent Mountain Wildfire 20 miles southwest of Twisp was caused by lightning and first detected on July 29th. The fire grew through the month of August eventually consuming 52,609 acres of timber in the upper reaches of the Twisp River Valley before being contained in mid S…
The Cougar Creek Wildfire 12 miles northwest of Ardenvoir was started by lightning in late July. During the month of August the fire grew and consumed 42,712 acres of timber and brush. While the fire burned in unpopulated forest land, the margins of the fire did threaten nearby h…
The lightning-caused fire, which began July 14, blackened 269,186 acres; leveled approximately 325 homes, 146 barns, outbuildings and fences; damaged utilities, killed cattle, wildlife and other livestock, and destroyed or damaged orchards, crops, forest and range land. Total cos…
A relatively small fire flared up along the north shore of Lake Wenatchee amongst a group of recreational cabins. Three of these cabins were destroyed during the blaze, and another sustained major structural damage. Damage costs were estimated.
Wildfire Wildfire
Lightning ignited the Muckamuck Wildfire, which spread in and around the town of Conconully, on August 4th. The fire was on lands managed by Colville National Forest that had not burned in several years. There are no known injuries or fatalities. There were seven structures lost:…
Excessive Heat Excessive Heat
Two locations reached an all time record high temperature on the afternoon of June 28th: Plain at 109 degrees and Mazama at 112 degrees. Local broadcast news reported that, near Inspiration Lake, a hiker was rescued after suffering from heat exposure. Local libraries were arrange…
Winter Storm Winter Storm
The Department of Transportation measured 14 inches of snow at Stevens Pass on March 28th. At the Cascade Crest on Highway 2, there were reports of light-to-heavy snow and blowing snow due to gusty winds. This led to hazardous road conditions and avalanche control planned for the…
Winter Storm Winter Storm
There was heavy snowfall and ice coverage in the eastern Cascades, which led to pass closures, dangerous road conditions, and snow slides. US-2 Highway at Stevens Pass was closed on February 25th night due to the slide which covered the roadway. There were 27 inches of new snow a…
Winter Storm Winter Storm
Several bands of heavy snow closed Stevens Pass at 6PM February 22nd through 8AM on February 23rd. The Washington Department of Transportation reported 11 inches of new snow accumulation at Stevens Pass. Heavy snow continued falling through the day adding to already dangerous dri…
Winter Storm Winter Storm
Heavy snowfall, over 72 hours, brought severe and dangerous conditions across the Cascades, especially on US-2 and Stevens Pass. From 6AM February 14th through 6AM February 17th, 40 of snow fell at the pass. This contributed to numerous closures of on U-2 at Stevens Pass due to v…
Heavy Snow Heavy Snow
The Washington Department of Transportation reported that Stevens Pass received 18 inches of new snow accumulation in 24 hours. Heavy snow led to limited visibility and poor road conditions. US Highway 2 was closed due to spinouts, dangerous travel, and to perform avalanche contr…
Heavy Snow Heavy Snow
The Mission Ridge Ski Resort reported 8.0 inches of new snow accumulation.
Heavy Snow Heavy Snow
Two mid-level waves brought an impressive two-day snow accumulation. Enhanced lift brought a boundary of heavy snow on January 27th. Light snow fell on the following day, but there was a two-day total of 7 to 12 inches across the Methow Valley.
Heavy Snow Heavy Snow
A CO-OP observer, 8 miles west of Lucerne, recorded 11.9 inches of new snow accumulation.
Heavy Snow Heavy Snow
A CO-OP observer in Stehekin recorded 7.0 inches of new snow accumulation.
Heavy Snow Heavy Snow
A trained spotter near Carlton recorded 7.0 inches of new snow accumulation.
Heavy Snow Heavy Snow
A CO-OP observer near Mazama recorded 7.9 inches of new snow accumulation.
Heavy Snow Heavy Snow
A CoCoRaHS observer near Twisp recorded 9.5 inches of new snow accumulation.
Heavy Snow Heavy Snow
The heaviest snow fell in the northern Cascades and eastern Cascade valleys overnight Monday, January 11th, into early Tuesday afternoon. The Cascade valleys received 6 to 10 inches of new snow accumulation. The mountains and passes received 12 to 15 inches. With saturated soils …
Heavy Snow Heavy Snow
The Berne WSDOT Camp recorded 15.8 inches of new snow accumulation.
Heavy Snow Heavy Snow
A CO-OP observer, 8.6 miles west of Lucerne, recorded 13.9 inches of new snow accumulation.
Heavy Snow Heavy Snow
A CoCoRaHS observer, 12 miles north of Leavenworth, recorded 7.5 inches of new snow accumulation.
Heavy Snow Heavy Snow
The Washington Department of Transportation site at Stevens Pass recorded 17.5 inches of new snow accumulation.
Heavy Snow Heavy Snow
A member of the public near Mazama reported 12 inches of new snow accumulation.
Heavy Snow Heavy Snow
A member of the public in Winthrop reported 8.0 inches of new snow accumulation.
Heavy Snow Heavy Snow
A heavy, wet snow fell overnight into the early morning hours of January 4th. The significant snow accumulations fell in the Methow Valley and eastern Cascades, which received 4 to 6 inches over approximately 12 hours.
Heavy Snow Heavy Snow
A CO-OP observer, 9 miles west of Lucerne, recorded 5.3 inches of new snow accumulation.
Heavy Snow Heavy Snow
A trained spotter, 7 miles northwest of Malott, recorded 4.5 inches of new snow accumulation. It was still snowing at time of report.
Heavy Snow Heavy Snow
A trained spotter near Twisp recorded 5.5 inches of new snow accumulation. It was still snowing at time of report.
Heavy Snow Heavy Snow
A CO-OP observer in Winthrop recorded 6.2 inches of new snow accumulation.
Heavy Snow Heavy Snow
The Washington Department of Transportation recorded 20 inches of new snow accumulation at Stevens Pass. This occurred within a 48 hour time period and led to difficult driving conditions from snow covered roadways.
Heavy Snow Heavy Snow
There were not many reports of heavy snowfall in the eastern Cascades. Most of the area received only a few inches of snow. However, two CO-OP observer stations, in Lucerne and Stehekin, recorded 5 to 7 inches of new snow accumulation overnight.
Heavy Snow Heavy Snow
A CO-OP observer station in Stehekin recorded 5.0 inches of new snow accumulation.
Strong Wind Strong Wind
There were sustained winds 20 - 30 mph with gusty winds to 55 mph in the eastern slopes of the Cascades. Local utility companies reported 1,200 people in Chelan County without power due to large trees falling on power lines.
Heavy Snow Heavy Snow
Numerous locations across the Methow Valley, in Okanogan County, received heavy snowfall in this winter storm. There were reports of 24 hour accumulations of 7 to 9 inches, as well as 48 hour reports of 12 to 14 inches.
Heavy Snow Heavy Snow
A member of the public, in Mazama, reported 9.0 inches of new snow accumulation.
Heavy Snow Heavy Snow
A member of the public, in Winthrop, reported 8.0 inches of new snow accumulation.
Heavy Snow Heavy Snow
A CoCoRaHS observer, 3 miles southeast of Winthrop, recorded 7.1 inches of new snow accumulation.
Heavy Snow Heavy Snow
A CoCoRaHS observer, 6.8 miles north-northwest of Winthrop, recorded a 48 hour total snow accumulation of 12.5 inches.
Heavy Snow Heavy Snow
A member of the public, in Twisp, reported 7.0 of new snow accumulation.
Events by year
| Year | Events | Tornadoes |
|---|---|---|
| 2021 | 26 | 0 |
| 2020 | 49 | 0 |
| 2019 | 36 | 0 |
| 2018 | 52 | 0 |
| 2017 | 46 | 0 |
| 2016 | 27 | 0 |
| 2015 | 72 | 0 |
| 2014 | 36 | 0 |
| 2013 | 5 | 0 |
| 2012 | 18 | 0 |
| 2011 | 14 | 0 |
| 2010 | 5 | 0 |
| 2009 | 4 | 0 |
| 2008 | 8 | 0 |
| 2007 | 9 | 0 |
| 2006 | 16 | 0 |
| 2005 | 2 | 0 |
| 2004 | 5 | 0 |
| 2003 | 9 | 0 |
| 2002 | 2 | 0 |
| 1998 | 1 | 0 |