Oregon landslides and avalanches

Every recorded landslide or avalanche record since 1996 · 31 counties with a record

NOAA's Storm Events Database records 91 landslide and avalanche records in Oregon from 1996 through June 30, 2026, about 3.4 a year since 2000. The deadliest was the February 11, 2014 avalanche in Baker County: 2 deaths and 2 injuries. Oregon ranks 9th of 37 states and territories by count and 11th of 37 per square mile.

Landslides and avalanches in Oregon, 1996 to 2026

Landslide records per year (NOAA Storm Events); 2026 to June 30, 2026.

recorded, no damage figure
under $1 million
$1 million or more
$10 million or more
$100 million or more, or 10 deaths
$1 billion or more, or 100 deaths
a year's colour: its recorded damage or deaths
a year with a death

Records: 911996 to June 30, 2026
A year since 2000: 3.4average
Deaths: 816 injuries
Damage, 2025 dollars: $3.8Mas filed
Busiest year: 199619 records

Source: NOAA NCEI Storm Events Database, records through June 30, 2026; deaths and damage as filed, damage in 2025 dollars. Search the record at NCEI.

Are landslide and avalanche records common in Oregon?

Oregon averages about 3.4 landslide and avalanche records a year since 2000, 9th of 37 states and territories by count. The busiest year on record was 1996 (19). Per 10,000 square miles of land, Oregon records 9.5 landslide and avalanche records since 1996, 11th of 37 states and territories by that measure.

Source: NOAA NCEI Storm Events Database, records since 1996, per 10,000 square miles of land area (Census Bureau 2024 Gazetteer; places under 1,000 square miles not ranked). Damage colours: Storm Events damage, 2025 dollars.

Which counties in Oregon have the most landslide and avalanche records?

Per square mile, Multnomah County leads Oregon: 16 days with a landslide or avalanche record since 1996, 37.1 per 1,000 square miles of land. By raw count, Clackamas County has the most landslide records (26 since 1996); large counties collect more records simply by covering more ground, so the ranking counts days with a record per unit of area (a storm filed for several forecast zones adds several records but one day).

Multnomah County 37.1 (22)
Washington County 16.6 (17)
Hood River County 15.3 (8)
Clatsop County 13.3 (12)
Columbia County 12.1 (8)
Tillamook County 10.9 (13)
Benton County 8.9 (9)
Yamhill County 8.4 (6)
Polk County 8.1 (9)
Clackamas County 7.5 (26)
Lincoln County 7.1 (11)
Marion County 4.2 (10)

Source: NOAA NCEI Storm Events Database, days with a record in the county since 1996 per 1,000 square miles of land (Census Bureau 2024 Gazetteer); in brackets, the count of records.

When is the slide season in Oregon?

56% of its landslide and avalanche records since 1996 fell in December and January. The busiest month is January (36 records).

The values, month by month

Jan 36 · Feb 11 · Mar 4 · Apr 3 · May 4 · Jun 5 · Jul 4 · Aug 1 · Sep 1 · Oct 0 · Nov 7 · Dec 15 (records).

Source: NOAA NCEI Storm Events Database, records by the month they began, since 1996.

What were the deadliest landslide and avalanche records in Oregon?

Oregon: the storms with the most deaths since 1996
Date	Record	Killed	Injured	Damage
2014-02-11	AvalancheBaker County · forecast zone Baker Four people in a party of eight were caught in an avalanche about ten miles north of Halfway, Oregon or near Cornucopia around noon PST. Two are deceased, a guide and a client, and are awaiting recovery. Two were seriously injured: one female with 2 broken legs and one broken arm, one male with a broken leg.	2	2	–
2009-03-07	AvalancheWallowa County · forecast zone Wallowa County A 50 year old Enterprise, Oregon man died in an avalanche while backcountry skiing in the Eagle Cap Wilderness. Two other people were rescued. The quarter mile long slap avalanche occurred about 1 pm. Heavy snow had fallen in the area earlier in the week.	1	2	–
2014-03-30	AvalancheDeschutes County and 2 more · forecast zone East Slopes Of The Oregon Cascades A call came in at 3:30 P.M. to the Deschutes County Sheriff's Office reporting that an avalanche with a width of 200 yards and a length of about 100 yards had buried a man and his snowmobile. The depth of the debris field was about 3 to 5 feet. Search and Rescue crews located him around 5:50 P.M.	1	1	–
2021-01-13	Debris FlowDodson, Multnomah County Multiple landslides and debris flow were triggered by heavy rain near Dodson between 0000PST and 0300PST. About 25 homes in the area were evacuated. One motorist was swept away by the debris flow near the intersection of NE Frontage Road and the Ainsworth State Park exit off I-84.	1	1	$38K
2010-01-02	AvalancheCrook County and Deschutes County · forecast zone Central Oregon An avalanche, 200 feet wide, buried and killed a snowmobiler from La Pine, Oregon on Paulina Peak which is south of Bend.	1	0	–
1996-02-05	Debris FlowBenton County and 3 more · forecast zone Central Coast Range Of W Oregon During the week of February 3rd through the 10th, a river of subtropical atmospheric moisture flowed above northern Oregon. Weather disturbances within this flow produced very heavy rainfall, particularly in the northwestern part of the state. The most intense rainfall occurred from the 6th through the 8th. In this 3 ...	1	0	–
1999-01-29	AvalancheNortheast Oregon · forecast zone Northeast Oregon Two cross country skiers and a snowboarder were on a back country outing near Spout Springs. At one point, the snowboarder stopped to adjust his bindings and his friends skied on. When they realized that their friend had not followed, they hiked back uphill and saw the aftermath of a 250-yard snowslide. They were not ...	1	0	–

Source: NOAA NCEI Storm Events Database: deaths direct and indirect, as filed by the National Weather Service, summed over each storm (one episode, or one named storm filed by several offices). Storm names from the titles of FEMA declarations that name the storm's counties.

The costliest landslide and avalanche records in Oregon

Oregon: the most damaging storms since 1993, 2025 dollars
Date	Record	Killed	Injured	Damage
2007-12-11	Debris FlowClatsop County and 4 more · forecast zone Coast Range Of Nw Oregon	0	0	$2.1M
2009-01-02	Debris FlowClackamas County and 2 more · forecast zone North Oregon Cascades Foothills One storm episode: 2 records; the totals are the episode's.	0	5	$963K
2021-01-13	Debris FlowDodson, Multnomah County	1	1	$38K
2025-03-16	Debris FlowWalden, Lane County	0	0	$2K

Source: NOAA NCEI Storm Events Database: property and crop damage as estimated by the National Weather Service, in 2025 dollars.

Are landslide and avalanche records becoming more frequent in Oregon?

Oregon's count per decade against the whole country's, and its share. NOAA recorded every event type only from 1996, so earlier decades are not comparable; the share of the national total is the fairer comparison across decades.

Landslides and avalanches: Oregon and the United States by decade (2020s to June 30, 2026)
Decade	Oregon	United States	Oregon's share
1996-99	27	98	27.6%
2000s	27	790	3.4%
2010s	23	1,304	1.8%
2020-26	14	1,224	1.1%

Source: NOAA NCEI Storm Events Database.

The most recent landslide and avalanche records in Oregon

The 12 most recent records, to June 30, 2026
Date	Record	Killed	Injured	Damage
2025-07-31	Debris FlowOxman, Baker County	0	0	–
2025-07-22	Debris FlowWeatherby, Baker County	0	0	–
2025-07-09	Debris FlowBorgan, Malheur County	0	0	–
2025-03-16	Debris FlowWalden, Lane County	0	0	$2K
2021-01-13	Debris FlowDodson, Multnomah County	1	1	$38K
2014-03-30	AvalancheDeschutes County and 2 more · forecast zone East Slopes Of The Oregon Cascades	1	1	–
2014-02-11	AvalancheBaker County · forecast zone Baker	2	2	–
2010-01-02	AvalancheCrook County and Deschutes County · forecast zone Central Oregon	1	0	–
2009-03-07	AvalancheWallowa County · forecast zone Wallowa County	1	2	–
2009-01-02	Debris FlowClackamas County and 2 more · forecast zone Greater Portland Metro Area	0	5	$275K
2009-01-02	Debris FlowClackamas County and 2 more · forecast zone North Oregon Cascades Foothills	0	0	$688K
2007-12-11	Debris FlowClatsop County and 4 more · forecast zone Coast Range Of Nw Oregon	0	0	$2.1M

Source: NOAA NCEI Storm Events Database, records through June 30, 2026; the newest months are revised by NCEI as reports arrive. Search the record at NCEI.

Federal disaster declarations for landslide and avalanche records in Oregon

FEMA has declared 15 disasters in Oregon for landslide and avalanche, counting its incident type and declarations that name landslide or mudslide in the title (FEMA files most storm disasters under Severe Storm); 15 were major disasters, the latest on April 7, 2026.

The 12 most recent
Declared	Number	Title	Areas named
2026-04-07	DR-4907	Severe Storms, Straight-Line Winds, Flooding, Landslides, and Mudslides	11
2025-07-22	DR-4881	Severe Storms, Flooding, Landslides, and Mudslides	4
2024-04-13	DR-4768	Severe Winter Storms, Straight-Line Winds, Landslides, and Mudslides	13
2023-08-28	DR-4733	Severe Storm, Flooding, Landslides, and Mudslides	1
2020-04-03	DR-4519	Severe Storms, Flooding, Landslides, and Mudslides	4
2019-07-09	DR-4452	Severe Storms, Flooding, Landslides, and Mudslides	6
2019-05-02	DR-4432	Severe Winter Storms, Flooding, Landslides, and Mudslides	5
2017-08-08	DR-4328	Severe Winter Storms, Flooding, Landslides, and Mudslides	4
2016-02-17	DR-4258	Severe Winter Storms, Straight-Line Winds, Flooding, Landslides, and Mudslides	14
2012-03-02	DR-4055	Severe Winter Storm, Flooding, Landslides, and Mudslides	12
2011-02-17	DR-1956	Severe Winter Storm, Flooding, Mudslides, Landslides, and Debris Flows	6
2007-12-08	DR-1733	Severe Storms, Flooding, Landslides, and Mudslides	12

Source: FEMA OpenFEMA Disaster Declarations Summaries (v2), through October 2, 2026. OpenFEMA dataset page.