Unified Interior Regions


The Pacific Region has nine USGS Science Centers in California, Nevada, and Hawaii. The Regional Office, headquartered in Sacramento, provides Center oversight and support, facilitates internal and external collaborations, and works to further USGS strategic science directions.

States L2 Landing Page Tabs

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Surface flows erupting; lava bench movement measured...
August 24, 1994

Several large surface lava flows from the eruption along Kīlauea's east rift zone occurred this past week. The largest of these flowed down the east side of the flow field between the Kamoamoa flows and those that surrounded Waha'ula several years ago. 

August 19, 1994

Earthquakes are a frequent occurrence on the Island of Hawaii. Rarely a week goes by that we do not experience at least one earthquake that is large enough to be felt.

Local volcanologist to assess Zaire eruption...
August 12, 1994

The U.S. Geological Survey has a Volcano Disaster Assistance Program (VDAP) that provides scientific and technical assistance during international volcanic crises.

August 5, 1994

The U.S. Geological Survey maintains a network of more than 50 seismic stations on Hawaii Island. The instruments and their distribution were originally designed to record and locate the many small earthquakesassociated with magma movement inside Kīlauea and Mauna Loa Volcanoes. 

July 29, 1994

The eruption along Kīlauea's East Rift Zone continues with little change since our last report in mid-June. There are still two erupting vents located on the southwest and west flanks of the Pu'u 'O'o cone, which is located about 11 miles east of Kīlauea's summit. 

June 10, 1994

The eruption on Kīlauea's east rift zone continues with little change. The eruption has now been going for eleven and one-half years and shows no signs that the end is close.

June 3, 1994

On May 22 at 7:50 in the morning, the northern part of Hawaii Island was rattled by an earthquake with an estimated magnitude of 4.2.

May 27, 1994

Before the current activity on Kīlauea's east rift zone, the most long-lived rift eruption was that of Mauna Ulu, which began 25 years ago, on May 24, 1969.

The 1960 tsunami, Hilo...
May 20, 1994

Thirty-four years ago, on May 23, 1960, a tsunami destroyed much of downtown Hilo. Tsunami, or seismic sea waves, are generated in several ways, including by large submarine explosive eruptions, by landslides where rock slides into or beneath the sea surface, and by large earthquakes that displace rocks below sea level.

Kīlauea flows continue without interruption
May 13, 1994

The eruption along Kīlauea's east rift zone continues without interruption. Following the last pause in activity in the middle of April, the tube was reoccupied from the vent 51 and 53 areas adjacent to the Pu'u 'O'o cone to just above Paliuli, upslope from Kamoamoa.

May 6, 1994

Kīlauea is famous for eruptions of the type we are now experiencing--quiet effusion of lava that makes the eruption approachable. However, not all of Kīlauea's eruptions have been so passive and approachable.

Lava flow hazard map revisited...
April 29, 1994

A few weeks ago, several members of the Hawaiian Volcano Observatory staff presented information about volcanic hazards on Hawaii to the Hawaiian Beaches/Shores Community Association.