News

Weak flows on Kamokuna delta

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...

Lava flows, Pu‘u Pohaku‘ohanalei cone, Moku‘āweoweo's North Pit, Sulphur Cone area, and a video of Mauna Loa's summit caldera.

Views of Kīlauea caldera

Ocean entry inactive; breakouts continue on delta and coastal plain

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?

Activity at Pu‘u ‘Ō‘ō and on the 61g flow

Using detailed geologic mapping and modeling of how a fluid (in this case, lava) responds to surface topography, USGS-HVO constructed nine maps...

Lava breakouts continue on the coastal plain and on the delta