Geologic mapping has been one of the most fundamental mandates of the U.S. Geological Survey (USGS) since its establishment ...

The U.S. Geological Survey says it has detected an increase seismic activity around Kamaʻehuakanaloa. The underwater volcano ...

Over the past century, technological advancements have vastly improved volcano monitoring. One key innovation was the ...

Visit the observatory website for past “Volcano Watch” articles, Kīlauea and Maunaloa updates, volcano photos, maps, recent earthquake information and more. Email questions to [email protected].

Iceland is entering a new period of volcanic unrest. See how one small team helps keep people safe ...

SARASOTA, Fla. - Mexico’s most active volcano, along with the jet stream pattern, sent ash over the Gulf of Mexico and Florida on Saturday, allowing the emissions to be visible to pilots and ...

New Jersey was once home to a fiery volcano roughly the size of Mount St. Helens – that sits in the same county as a newly mapped fault line. Rutan Hill, in Wantage, NJ, appears to be and is ...

JAMM AQUINO / JAQUINO @STARADVERTISER.COM Dark, low-lying clouds are seen above Makiki during a flood advisory today. 1 /2 JAMM AQUINO / JAQUINO @STARADVERTISER.COM Dark, low-lying clouds are seen ...

Satellite data and pilots both reported volcanic ash high in the atmosphere over northern Florida to start the weekend, the product of a jet stream blowing across an active volcano in Mexico.