Record spike in earthquakes at Washington's 'high threat' volcano sends researchers scrambling for answers

View of mount adams with trees framing the ice covered volcano.

Scientists have recorded a significant uptick in earthquakes at the Mount Adams volcano — the largest active volcano in Washington state.

Six earthquakes hit the "high threat" volcano in September, according to the United States Geological Survey (USGS), which is a drastic increase from the normal rate of one earthquake at the volcano every two to three years.