A spike in earthquakes at Mount Adams, a volcano in Washington state, prompted scientists to install additional monitoring instruments to assess the seismic activity.

Six low-intensity earthquakes rumbled beneath Mount Adams during September, according to the U.S. Geological Survey Cascades Volcano Observatory.

Six earthquakes were recorded at Mount Adams in September — the highest number in a single month since records began in 1982.

Six unusual earthquakes shook Mount Adams in September, but it's too soon to speculate about a potential eruption

Scientists are baffled as a record spike in earthquakes rocks Washington's dormant Mount Adams. Could this "high threat" volcano be gearing up for an eruption? Find out what these tremors mean and how they could impact thousands nearby.