Overview map and location of the Tracy Arm landslide-generated tsunami event. The imagery is not current, and the South Sawyer Glacier has retreated over a kilometer from what is depicted.
Multimedia
Browse our photos and videos of landslide research and post-landslide investigations.
Images
2025 Tracy Arm Landslide Overview Map
Overview map and location of the Tracy Arm landslide-generated tsunami event. The imagery is not current, and the South Sawyer Glacier has retreated over a kilometer from what is depicted.
2025 Tracy Arm Landslide Aerial Photo Facing West
Oblique aerial photo of the August 10, 2025 landslide captured during a field reconnaissance overflight on August 13, 2025. Look direction is to the west.
Oblique aerial photo of the August 10, 2025 landslide captured during a field reconnaissance overflight on August 13, 2025. Look direction is to the west.
2025 Tracy Arm Landslide Source Area
Oblique aerial photo of the August 10, 2025 landslide source area captured during a field reconnaissance overflight on August 13, 2025. Look direction is approximately north.
Oblique aerial photo of the August 10, 2025 landslide source area captured during a field reconnaissance overflight on August 13, 2025. Look direction is approximately north.
2025 Tracy Arm Landslide Tsunami-Inundated Shoreline
2025 Tracy Arm Landslide Tsunami-Inundated ShorelinePhoto of tsunami-inundated shoreline at Williams Cove, near the mouth of Tracy Arm. Look direction is approximately north.
2025 Tracy Arm Landslide Tsunami-Inundated Shoreline
2025 Tracy Arm Landslide Tsunami-Inundated ShorelinePhoto of tsunami-inundated shoreline at Williams Cove, near the mouth of Tracy Arm. Look direction is approximately north.
2025 Tracy Arm Landslide Across the Fiord Facing North
2025 Tracy Arm Landslide Across the Fiord Facing NorthOblique aerial photo of the August 10, 2025 landslide taken from across the fiord during a field reconnaissance overflight on August 13, 2025. Look direction is approximately north.
2025 Tracy Arm Landslide Across the Fiord Facing North
2025 Tracy Arm Landslide Across the Fiord Facing NorthOblique aerial photo of the August 10, 2025 landslide taken from across the fiord during a field reconnaissance overflight on August 13, 2025. Look direction is approximately north.
2025 Tracy Arm Landslide and Tsunami Trimline
Oblique aerial photo of the August 10, 2025 landslide source area captured during a field reconnaissance overflight on August 13, 2025. Look direction is approximately north.
Oblique aerial photo of the August 10, 2025 landslide source area captured during a field reconnaissance overflight on August 13, 2025. Look direction is approximately north.
Videos
Postfire debris flow in the 2024 Elk Fire burn area
Postfire debris flow in the 2024 Elk Fire burn areaA debris flow recorded by a USGS Landslide Monitoring Station in the 2024 Elk Fire burn area near Dayton, Wyoming. The flow was triggered by intense rainfall during a thunderstorm on the evening of July 15, 2025.
Postfire debris flow in the 2024 Elk Fire burn area
Postfire debris flow in the 2024 Elk Fire burn areaA debris flow recorded by a USGS Landslide Monitoring Station in the 2024 Elk Fire burn area near Dayton, Wyoming. The flow was triggered by intense rainfall during a thunderstorm on the evening of July 15, 2025.
Geologic Controls on Deep-Seated Landslides
The frequency and scale of landslides in a region are determined by both external forcing and inherent, site-specific susceptibility.
The frequency and scale of landslides in a region are determined by both external forcing and inherent, site-specific susceptibility.
Understanding large rock slides in deglaciated valleys in the Central and Patagonian Andes
Understanding large rock slides in deglaciated valleys in the Central and Patagonian AndesThe effects of deglaciation on the slope stability of glacial valleys have increasing importance in the context of climate change, with a role on the susceptibility to large-volume rock slides or rock avalanches and catastrophic cascading geohazards.
Understanding large rock slides in deglaciated valleys in the Central and Patagonian Andes
Understanding large rock slides in deglaciated valleys in the Central and Patagonian AndesThe effects of deglaciation on the slope stability of glacial valleys have increasing importance in the context of climate change, with a role on the susceptibility to large-volume rock slides or rock avalanches and catastrophic cascading geohazards.
Controls on post-fire debris flows in Oregon
Wildfire often amplifies the likelihood and magnitude of debris flows in steep terrain. In arid climates (e.g. US Mountain West and Southwest), post-fire debris flows typically occur during the first rains following fire, suggesting that rainfall-driven erosion is a strong control on in-channel preconditioning and triggering of these hazards.
Wildfire often amplifies the likelihood and magnitude of debris flows in steep terrain. In arid climates (e.g. US Mountain West and Southwest), post-fire debris flows typically occur during the first rains following fire, suggesting that rainfall-driven erosion is a strong control on in-channel preconditioning and triggering of these hazards.
Atmospheric rivers cause the majority of precipitation-induced landslides in Western North America
Atmospheric rivers cause the majority of precipitation-induced landslides in Western North AmericaAtmospheric rivers (ARs) are transient channels of intense horizontal water vapor transport in the lower atmosphere.
Atmospheric rivers cause the majority of precipitation-induced landslides in Western North America
Atmospheric rivers cause the majority of precipitation-induced landslides in Western North AmericaAtmospheric rivers (ARs) are transient channels of intense horizontal water vapor transport in the lower atmosphere.
One Way to Develop a Geologic Hazards Program: Lessons Learned and Anecdotes
One Way to Develop a Geologic Hazards Program: Lessons Learned and AnecdotesThe development of a Geologic Hazards Program for the USDA Forest Service is a challenging undertaking.
One Way to Develop a Geologic Hazards Program: Lessons Learned and Anecdotes
One Way to Develop a Geologic Hazards Program: Lessons Learned and AnecdotesThe development of a Geologic Hazards Program for the USDA Forest Service is a challenging undertaking.