Mount Cleveland, located in Alaska's central Aleutian Islands, is in a state of volcanic unrest since elevated surface temperatures were detected by satellite June 17, 2015. Lava dome growth followed by explosive eruptions can send ash to altitudes hazardous to aviation.
Bogoslof volcano, located in Alaska's central Aleutian Islands, is in a state of elevated unrest since eruptions began December 12, 2016. Eruptive activity is dominated by explosions that can put volcanic ash to altitudes exceeding 30,000 feet, resulting in ash cloud hazards to aviation.
Pavlof Volcano, located on the Alaska Peninsula, is in a heightened state of unrest and an unpredictable condition. Check the most recent update to find out about eruptive activity and possible flight restrictions.
Kīlauea Volcano on the Island of Hawai‘i has been erupting from its East Rift Zone nearly continuously since 1983. Lava from this eruption is flowing into the Pacific Ocean presenting a variety of ocean entry hazards including explosions, delta collapse, and clouds of acidic steam and volcanic glass. A second eruption began at the summit of Kīlauea in 2008 where the Overlook crater within Halema‘uma‘u hosts an active lava lake producing active spattering, occasional explosions, and gas emissions that create State-wide vog hazards.
Mauna Loa Volcano on the Island of Hawai‘i began showing signs of unrest in 2014, and the volcano alert level and aviation color code were raised on September 17, 2015. Elevated rates of earthquakes and ground deformation persist and HVO continues to monitor the volcano closely.
Summit of Cleveland Volcano in Alaska's central Aleutian Islands. A lava dome is visible in the crater.
Worldview-2 satellite image of Bogoslof volcano collected on March 11, 2017 at 22:15 UTC (1:15 PM AKST). Image data provided under Digital Globe NextView License.
Worldview satellite image collected at 14:34 AKDT (22:34 UTC) on May 28, 2017 showing the initial development of the eruption cloud from Bogoslof volcano.
A wide view of the ocean entry, showing the broad lava delta on the right. Lava deltas (new land formed at the ocean entry) are built on a foundation of rubble, so they can (and do) collapse without w
A closer look at Kīlauea's summit lava lake on Wednesday evening, around 6:30 p.m., when the lake was just 8 meters (26 feet) below the floor of Halema‘uma‘u Crater.
Steaming Pavlof volcano and Pavlof Sister as viewed from the west shore of Unga Island, Alaska. View is to the west.