Volcano Hazards Program Office

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Deposit of the largest lahar from Mount Baker, Washington, exposed ...

Deposit of the largest lahar from Mount Baker, WA, exposed near con...

Note the protruding logs and branches from living trees that were knocked down and carried by the lahar. Ice axe, 3 ft, shows scale. Lahars are the greatest hazard at Mount Baker.

Clear day view of ML cam

[MLcam] Mokuʻāweoweo Caldera from the Northwest Rim

This image is from a temporary research camera positioned on the north rim of Mokuʻāweoweo, the summit caldera of Mauna Loa volcano by the USGS Hawaiian Volcano Observatory. If you look carefully around early morning or late evening, you may see a few thermal areas emitting steam. See 'Current Activity' for the latest Mauna Loa information.

Disclaimer

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Color graphic showing Mauna Loa historical lava flows, hazard zones, and county districts
June 5, 2020

Simplified table of Mauna Loa historical activity

Simplified table of Mauna Loa historical activity modified from Lockwood and Lipman (1987).
Updated by James P. Kauahikaua and Katherine M. Mulliken, USGS Hawaiian Volcano Observatory, https://volcanoes.usgs.gov/hvo/, askHVO@usgs.gov.
Note that this table is a “living” document and

LaharZ model (left) of the possible lahar hazards from the Carbon a...

LaharZ model of the possible lahar hazards from the Carbon and Puya...

LaharZ model (left) of the possible lahar hazards from the Carbon and Puyallup River drainages from Mount Rainier. The town of Orting, Washington (photograph) sits in the lahar hazard zone.

Recent Changes at Kīlauea Volcano - Dec. 21 to Dec. 24

Kīlauea's summit has changed dramatically over the past four days! The KW webcam has captured these recent changes. The first image, taken on December 21, 2020, just after 6:30 a.m. HST shows how much the lava lake had grown since 9:30 p.m. on December 20, when the eruption began. The second image, taken at just after 6:30 p.m. HST on December 25, 2020 shows how much the

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Crater Lake, Chaski Bay. Talus slope sits on flat top of massive sl...

Crater Lake, Chaski Bay. Talus slope sits on flat top of massive sl...

View southwest of Garfield Peak and Eagle Crags above Chaski Bay. Cliffs at caldera rim are andesite of Applegate Peak (unit aa; ca. 210-270 ka), overlain by two thin flows of andesite of Garfield Peak at top center (unit ag; 224 ±9 ka). Talus rests on flat top of massive slide block that consists of altered lavas of units aa, ak(?), and db(?). Informally known as Chaski

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Map of Kīlauea Volcano showing the south-southeast motion, as recor...

Map of Kīlauea showing the south-SE motion, as recorded by continuo...

Map of Kīlauea Volcano showing the south-southeast motion, as recorded by continuous GPS sites (arrows), and earthquake epicenter between February 1-3, 2010.

Before the eruption of May 18, 1980, Mount St. Helens' elevation wa...

Before the eruption of May 18, 1980, Mount St. Helens' elevation wa...

Mount Adams elevation is 3,745 m (12, 286 ft). Mount St. Helens was the smallest of five major volcanic peaks in Washington State.

Helicorder for Plate Boundary Observatory borehole seismometer B207...

Helicorder for Plate Boundary Observatory borehole seismometer B207...

Seismicity is shown for January 17, 2010 through the Feb 8, 2010. Borehole seismometer B207 is located about 7 miles (12 km) northeast of the 2010 swarm. Seismic data are provided by the National Science Foundation funded Plate Boundary Observatory operated by UNAVCO.

KWcam images comparing first 2 weeks of Halema‘uma‘u crater eruption

KWcam webcam images compare the changes within Halema‘uma‘u crater since the eruption at Kīlauea Volcano’s summit started two weeks ago. The left image, taken on December 21 at 7:02 a.m. HST, shows the west vent (lower center) and north vent (center left) both erupting lava that is cascading into the new lava lake. In the right image from this morning, January 4 at 9:30 a.

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Clear day view of Redoubt CI

Redoubt - CI

Camera installation and maintenance are courtesy of Hilcorp. The camera is located on Platform Anna, approximately 38 miles SE of Mt. Spurr; it was originally pointed at Mt. Spurr. This camera is NE of Redoubt, and has been repositioned (mid-March, 2012) to show both Redoubt (right) and Iliamna (left) in its view.

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