Unified Interior Regions

Hawaiian Volcano Observatory's Recent Earthquakes Web page from Tuesday, July 31, with earthquake shown as colored circles, according to their times of occurrence.

Lava fountains, occasionally surging to heights of 45-55 m (150-180 ft), erupted south and north of Keanakāko‘i Crater (top and middle fissures, respectively) and on the floor of Kīlauea Caldera (foreground fissure) in a spectacular summit eruption on July 19, 1974. A torrent of lava (largely obscured by fume at lower right) gushed to the caldera floor through a pre-

A view of the lava lake within the Halema‘uma‘u Overlook vent on an unusually clear day (May 16, 2012) with the Jaggar Museum and the HVO building in the distance.

This Quicktime movie shows the impressive spattering at the western margin of the lava lake at Halema‘uma‘u. The continuous spattering is often punctuated by bursts which throw lava onto the ledge (left portion of image), and this accumulating lava is building a spatter rampart. If you focus on the right portion of the image, you can see the slow migration of the lava lake

This Quicktime movie shows spattering that is typical at the margins of the lava lake in Halema‘uma‘u crater. The slow migration of the lava lake surface is normally towards the area of spattering, where the lava sinks back into the magmatic system. Spatter in this clip is being thrown about 5-10 meters (yards) in height. Views like this are fleeting, however, with the

Map of the summit area of Kīlauea showing the location of the Halema‘uma‘u Overlook vent, and road and trail closures in response to the eruption. Kīlauea's caldera is located within Hawai‘i Volcanoes National Park.

The lava lake in Halema‘uma‘u has been at a relatively high level over the past week, and several rise-fall cycles (short term increases in lava level immediately followed by spattering and an abrupt drop) pushed the level even higher over the past day. This Quicktime movie is a timelapse sequence taken from the Halema‘uma‘u thermal camera, showing the rise-fall cycles and

A small lava pond, set within a collapse pit, has been active in the eastern portion of Pu‘u ‘Ō‘ō

Tilt measured at the summit of Kīlauea during March 1-7, 2012, shows a series of U- and V-shaped DI events, with deflation indicated by downward tilt and inflation by upward tilt. Images from a thermal camera that overlooks the summit eruptive vent demonstrate how the lava level (noted by white dashed line), depicted by warmer colors, charges across tilt cycles. Tilt is

Lava flows creep through the Royal Gardens subdivision on February 24, 2012, slowly burying the few remaining forested kipuka.

pāhoehoe flows were active on the coastal plain today, but extended only about 400 m (440 yards) out from the base of the pali. These flows have about 2.8 km (1.7 miles) more to travel to reach the ocean. Farther up the hill, on the steep lower portion of the pali, several active ‘A‘ā cascades are visible.