Images

Overview maps at the same scale showing the epicenter of the M7.0 Hubbard Glacier Earthquake and modeled peak ground acceleration contours. A) shows the probability of landslides triggered by the earthquake and mapped faults, and B) shows the locations of landslides mapped using synthetic aperture radar (SAR) change detection. 

Animation of Sentinel-1 radar backscatter satellite imagery from November 28^th and December 9^th, 2025, showing the changes in surface roughness after the M7.0 Hubbard Glacier Earthquake. The lighter regions have rougher surface areas. The colored points correspond to preliminary mapping of potential mass movements.

Landsat 9 true color, pan-sharpened satellite image collected on December 10, 2025, showing landslides triggered by the M7.0 Hubbard Glacier Earthquake on the slopes of Mount King George. Landslide points were mapped from SAR change detection.

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. 

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.​

Photo of tsunami-inundated shoreline at Williams Cove, near the mouth of Tracy Arm. Look direction is approximately north.​

Oblique aerial photo of the August 10, 2025 landslide headscarp. Look direction is to the northwest.​

Comparison of (a) pre- and (b) post-event satellite images showing the source area of the August 10th landslide that impacted Tracy Arm. The dashed line in (a) shows the approximate location of the front of South Sawyer Glacier on August 7th, 2025 (mapped from imagery © 2025 Planet Labs PBC).

Oblique 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.​

Oblique aerial photo of the August 10, 2025 landslide, and tsunami trimline, captured during a field reconnaissance overflight on August 13, 2025. Look direction is to the northwest.​

Oblique aerial photo of the August 10, 2025 landslide. Look direction is to the south.​

Oblique aerial photo of the August 10, 2025 landslide and South Sawyer Glacier captured during a field reconnaissance overflight on August 13, 2025. Look direction is to the southeast.​

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.​

Oblique aerial photo of Sawyer Island captured during a field reconnaissance overflight on August 13, 2025. Look direction is to the southeast.​

Oblique aerial photo of the August 10, 2025 landslide across-fiord runup zone and South Sawyer Glacier captured during a field reconnaissance overflight on August 13, 2025. Look direction is to the southeast.​

A postfire debris-flow deposit in Rubio Canyon, in the Eaton Fire burn area Los Angeles, County, California. Debris flows were triggered by intense rain on the recently burned hillslopes.  Mud- to boulder-sized sediment was deposited by the debris flow in this image. The flow also damaged trees near and within the channel where the flow traveled.  

NATIONAL LANDSLIDE SUSCEPTIBILITY MAP

POSTFIRE DEBRIS FLOW SCIENCE

The U.S. Geological Survey helps local, state, and federal agencies assess debris flow hazards in recently burned areas. We provide information about the likelihood of debris flow activity, where they might happen, and how big they might be.

DEBRIS FLOW ASSESSMENTS

The boundary between burned and unburned terrain in the area burned by the 2025 Eaton Fire, Angeles National Forest, California.  Fire has removed all of the vegetation in the area of the hillslope visible in the image foreground.

A steep, burned hillside in the 2025 Eaton Fire, Los Angeles County, California.  The hillside is located near the northwestern edge of the burn perimeter, just off of Sunset Ridge road.  High winds while the fire burned and after it was contained has removed ash from the hillside.