Volcano Watch

Unless you've been sitting in a lava cave (the way we sometimes do) you should be well aware that this Sunday is the beginning of the annual Merrie...

The current eruption at Kīlauea's summit is unique in the recorded history of the volcano. Never in the past 200 years has there been a long-lived...

This past Wednesday marked the silver anniversary of Mauna Loa's most recent eruption.

When strong volcanic tremor (continuous shaking of the ground) was recorded beneath Redoubt volcano January 23 to 25, scientists of the Alaska Volcano...

It seems like only yesterday when the Hawaiian Volcano Observatory (HVO) monitored a several-week build-up in seismic tremor levels and sulfur dioxide...

As noted in Volcano Watch a few weeks ago, this month marks the 25th anniversary of Mauna Loa's most recent eruption—a 22-day event that began on...

The Island of Hawai`i, a composite of five volcanoes, has a surface area almost twice as large as the other main Hawaiian Islands combined.

When an earthquake occurs, why do we feel the ground shake? The shaking we feel is from seismic waves radiating away from the earthquake. These waves...

March 25 marks the 25th anniversary of the most recent eruption of Mauna Loa volcano.

In most sciences, processes are investigated by identifying the factors that affect them and varying each factor, in turn, to determine its...