Lava is overflowing the north vent and has raised the alert level for Kīlauea from advisory to watch as of 11:50 p.m. May 4, according to the Hawaiian Volcano Observatory. Overflow from the north vent is seen from a screenshot of a Kīlauea webcam on May 5,

Shishaldin volcano, a 9,373-foot stratovolcano on Unimak Island at the eastern end of Alaska’s Aleutian chain, has been producing persistent seismic tremor, frequent infrasound signals, and elevated sulfur dioxide emissions for weeks,

We are used to seeing eruptions from the summit region of Kilauea contained to the region that is referred to as Halema‘uma‘u. Halema‘uma‘u, home of Pele, is a crater situated within the larger, steep-walled caldera at the summit of Kilauea named Kaluapele.

The Oregon Department of Emergency Management (OEM), in partnership with the Oregon Department of Geology and Mineral Industries (DOGAMI) and the Cascades Volcano Observatory (CVO), is hosting a serie

Volcano Watch is a weekly article and activity update written by US Geological Survey Hawaiian Volcano Observatory scientists and affiliates. Today’s article is by HVO geologist Drew Downs. Photos of the fissure and lava cascading over the caldera rim from the August 14,