Volcano Watch

With the Wolf Moon illuminating Kīlauea Caldera from above and the Halema‘uma‘u lava lake glowing below, the USGS Hawaiian Volcano Observatory (HVO)...

On January 3, 2018, Pu‘u ‘Ō‘ō on Kīlauea Volcano's East Rift Zone reaches its 35th birthday. 

Lava erupting from the active vent on the east flank of Pu‘u ‘Ō‘ō has not entered the ocean or reached the Kamokuna lava delta during the past month...

Where do we stand today with big-picture knowledge of Kīlauea and Mauna Loa acquired in the past few decades?

January 2018 is Hawai‘i Island's 9th annual Volcano Awareness Month. 

A widely-held belief is that Thomas Jaggar, founder of the Hawaiian Volcano Observatory, was able to stop a Mauna Loa lava flow in 1935. But is it...

If you follow Kīlauea Volcano's ongoing East Rift Zone eruption, you are likely aware that when lava enters the ocean, it often forms new land. But...

Route 200, the Daniel K. Inouye Highway, crosses Humu‘ula Saddle, which separates Mauna Kea and Mauna Loa, the two largest volcanoes on the Island of...

Scientists at the USGS Hawaiian Volcano Observatory routinely collect lava samples from Kīlauea and use the chemistry of these samples to infer the...

What exactly do volcano threat rankings mean?