Cascadia subduction zone.
plate boundary
- Reports this week
- 2
- Active events
- 3
- Connections
- 37
What's happening
Active this week
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An Air National Guard base is located in Clackamas County, Oregon, near the Cascadia subduction zone fault line.Some support1 report
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Eric Riggs, dean at Cal Poly Humboldt, co-leads a project monitoring the Cascadia Subduction Zone.Some support1 report
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Earthquakes occurred from the Cascadia Subduction Zone, prompting emergency planning and preparedness efforts in Eastern Washington.Some support1 report
Earlier this month
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USGS recorded multiple offshore earthquakes across Fiji, Argentina, Vanuatu, and Philippines, while noting Seattle's location on the Cascadia Subduction Zone.Some support2 reports1 development inside
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The Cascadia subduction zone is showing signs of fault extension from California into Oregon and British Columbia, prompting tsunami warnings and official guidance.Some support3 reports2 developments inside
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Tectonic plates are interacting along the Cascadia subduction zone in British Columbia.Some support1 report
One to three months ago
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Earthquake risk is tied to the mountain range in the region.Some support1 report1 development inside
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Potential disasters, including wildfires and Cascadia Subduction Zone risks, are noted for the region.Some support1 report1 development inside
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Looming earthquake from the Cascadia subduction zone threatens toxic tank farms near the Willamette River.Some support2 reports
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Steve Gordon addressed Governor Tina Kotek's regional solutions regarding the impact of the Cascadia subduction zone on Central Oregon.Some support1 report1 development inside
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A college course in Central Oregon discusses the plate-collision phenomenon related to the Cascadia Subduction Zone.Some support1 report
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The Cascadia subduction zone is facing a shared fault system vulnerability affecting the region.Well supported5 reports5 developments inside
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Researchers are examining cores off Fort Bragg in Northern California as part of a study on the Cascadia Subduction Zone.Some support1 report
Gone quiet
No new reports in 90+ days-
The Cascadia subduction zone poses risks of widespread flooding and landslides due to potential earthquakes.Some support1 report
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The Cascadia subduction zone is located west of the Cascades.Some support2 reports
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A new water plant is planned to use Willamette River water to improve recovery from a Cascadia Subduction Zone earthquake.Some support1 report
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Seismic activity was felt in Whidbey Island and Seattle as tectonic plates rubbed beneath the surface.Some support1 report
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A discovery was made near the Pacific coast involving fluid originating from the Cascadia fault, studied by UW oceanographer Evan Solomon.Some support1 report
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Risk associated with the Cascadia Subduction Zone is driving the need for an emergency center in Redmond.Some support1 report
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A paper published by Katsuichiro Goda of Western University examines the earthquake risk to Tofino from the Cascadia Subduction Zone.Some support1 report
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Tectonic plates suggest a large earthquake is due near the Cascadia subduction zone, with related scientific deployment in the Arctic.Well supported4 reports1 development inside
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A tsunami tower has been established to address the risks posed by the Cascadia Subduction Zone.Well supported3 reports
No events began in the chosen period. Widen it, or reset.
Explainers that pass through Cascadia subduction zone
Cascadia subduction zone is a step on the way to someone else- How could integrated planning for the Cascadia Subduction Zone affect Oregon State University?Oregon State University may contribute academic research to Cascadia disaster planningPossible
- Cascadia risk planning may require BPA to strengthen grid resilienceCascadia risk planning may require BPA to strengthen regional power grid resiliencePossible
Around Cascadia subduction zone this week
News at the entities that move Cascadia subduction zone most-
United States Geological Survey OperationalGoogle expanded its Android detection system and programs across multiple regions, including Oregon, Washington, and Greece.Moves Cascadia subduction zone
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Earth StructuralScientific bodies documented the issue of global biodiversity loss, specifically referencing the Earth and the National Academy of Sciences.Moves Cascadia subduction zone
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Portland StructuralMail is being sent to a hub located in Portland, Oregon.Moves Cascadia subduction zone
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Central Oregon Shared contextTom McCall grew up on a ranch in Central Oregon.Moves Cascadia subduction zone
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Portland International Airport StructuralIntegrated planning and risk mitigation efforts are underway for the Cascadia Subduction Zone in the Pacific Northwest.Moves Cascadia subduction zone
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Western Washington Shared contextThe Cowlitz River flows through the Western Washington region.Moves Cascadia subduction zone
Connections
The 28 strongest of 37, analyzed from the reporting. The bars show how strongly a change on one side reaches the other.-
Portland Structural
The city of Portland is situated within the high-risk zone of the Cascadia subduction zone, making its infrastructure vulnerable to seismic activity.
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Central Oregon Shared context
Central Oregon is geographically situated within the projected influence zone of the Cascadia subduction zone.
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United States Geological Survey Operational
The USGS actively monitors the seismic and geological activity of the Cascadia subduction zone.
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Portland International Airport Structural
The airport's operational viability is inherently dependent on the seismic stability influenced by the Cascadia subduction zone.
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Western Washington Shared context
Cascadia subduction zone influences the potential for major quakes and tsunamis in Western Washington.
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Pacific Northwest Structural
The Cascadia subduction zone is located off the Pacific Northwest coast and poses a persistent risk of massive earthquakes and tsunamis to the region.
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Eugene Water & Electric Board Operational
Eugene Water & Electric Board is improving its infrastructure to improve recovery from the Cascadia Subduction Zone earthquake.
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Earth Structural
The Earth system incorporates the Cascadia subduction zone as an active and shifting component of its overall tectonic structure.
Show all 28 connections
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Willamette River Shared context
The Cascadia subduction zone poses a risk of earthquake to infrastructure located near the Willamette River.
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Oregon Shared context
The Cascadia subduction zone is geographically located near the coast of Oregon.
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Northern California Shared context
Northern California is a geographical area through which the Cascadia subduction zone passes and whose risk profile is defined by its presence.
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Geological Society of America Mentioned together
The Geological Society of America highlighted research focused on the Cascadia Subduction Zone.
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Seattle Shared context
Seattle is geographically situated along the Cascadia Subduction Zone, sharing its fault system vulnerability.
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Alaska Shared context
The Cascadia subduction zone is a geological feature that poses earthquake and tsunami hazards relevant to the region of Alaska.
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Lane County Shared context
Lane County is situated within the potential risk zone influenced by the Cascadia Subduction Zone, including seismic and geological hazards.
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Eastern Washington Shared context
Eastern Washington is located within the geographical hazard zone defined by the Cascadia Subduction Zone.
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Eric Riggs Shared context
Eric Riggs co-leads a project monitoring the Cascadia Subduction Zone.
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Westport Shared context
Westport is located in the region affected by the geological risks posed by the Cascadia Subduction Zone.
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Salem Shared context
The Cascadia subduction zone poses earthquake risk that affects the infrastructure and context of Salem.
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Tofino Shared context
Tofino is geographically situated within the area influenced by the Cascadia Subduction Zone.
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Whidbey Island Shared context
Whidbey Island is located within the hazard zone influenced by the Cascadia Subduction Zone.
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Central Oregon Community College Mentioned together
Central Oregon Community College incorporates the study of the Cascadia subduction zone phenomenon into its curriculum.
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British Columbia Shared context
The Cascadia subduction zone is geographically located beneath and runs through British Columbia.
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Redmond Shared context
The risk posed by the Cascadia subduction zone influences the need for emergency infrastructure in the region.
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Cascades Shared context
The company's operational area is geographically situated in the region influenced by the Cascadia subduction zone.
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Pacific Shared context
The Cascadia subduction zone is geographically located along the Pacific coastline.
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Mac MacDonald Shared context
Mac MacDonald is associated with warnings regarding the seismic risk posed by the Cascadia subduction zone.
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Humboldt County Shared context
Humboldt County is geographically located near the Cascadia Subduction Zone.
History
Events by the month they beganOctober 2026
3 events- An Air National Guard base is located in Clackamas County, Oregon, near the Cascadia subduction zone fault line.
- Eric Riggs, dean at Cal Poly Humboldt, co-leads a project monitoring the Cascadia Subduction Zone.
- Earthquakes occurred from the Cascadia Subduction Zone, prompting emergency planning and preparedness efforts in Eastern Washington.
September 2026
3 events- Tectonic plates are interacting along the Cascadia subduction zone in British Columbia.
- Looming earthquake from the Cascadia subduction zone threatens toxic tank farms near the Willamette River.
- A college course in Central Oregon discusses the plate-collision phenomenon related to the Cascadia Subduction Zone.
August 2026
1 eventShow 2 earlier months
July 2026
9 events- USGS recorded multiple offshore earthquakes across Fiji, Argentina, Vanuatu, and Philippines, while noting Seattle's location on the Cascadia Subduction Zone.
- Earthquake risk is tied to the mountain range in the region.
- Potential disasters, including wildfires and Cascadia Subduction Zone risks, are noted for the region.
- Researchers are examining cores off Fort Bragg in Northern California as part of a study on the Cascadia Subduction Zone.
- The Cascadia subduction zone poses risks of widespread flooding and landslides due to potential earthquakes.
- The Cascadia subduction zone is located west of the Cascades.
- A new water plant is planned to use Willamette River water to improve recovery from a Cascadia Subduction Zone earthquake.
- Seismic activity was felt in Whidbey Island and Seattle as tectonic plates rubbed beneath the surface.
- A discovery was made near the Pacific coast involving fluid originating from the Cascadia fault, studied by UW oceanographer Evan Solomon.
June 2026
6 events- Steve Gordon addressed Governor Tina Kotek's regional solutions regarding the impact of the Cascadia subduction zone on Central Oregon.
- The Cascadia subduction zone is facing a shared fault system vulnerability affecting the region.
- Risk associated with the Cascadia Subduction Zone is driving the need for an emergency center in Redmond.
- A paper published by Katsuichiro Goda of Western University examines the earthquake risk to Tofino from the Cascadia Subduction Zone.
- Tectonic plates suggest a large earthquake is due near the Cascadia subduction zone, with related scientific deployment in the Arctic.
- A tsunami tower has been established to address the risks posed by the Cascadia Subduction Zone.