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Time-lapse movie of Halemaumau Overlook Vent

(Activity updates are written by scientists at the U.S. Geological Survey’s Hawaiian Volcano Observatory.)

A lava lake within the Halema`uma`u Overlook vent during the past week resulted in night-time glow that was visible from the Jaggar Museum overlook. The lake has been about 60–80 m (200–260 ft) below the floor of Halema`uma`u Crater and visible by HVO’s Webcam through much of the last month. This past week, the level fluctuated due to deflation-inflation (DI) cycles at the summit, dropping to low levels early in the week but returning to relatively high levels later in the week.

On Kilauea’s east rift zone, surface lava flows on the pali and coastal plain continued advancing towards the ocean. As of Tuesday, June 12, the active flows were 1.3 km (0.8 miles) from the ocean; there was no active ocean entry. Within Pu`u `O`o crater, a lava pond was active and several small lava flows were erupted onto the crater floor over the past week.

No earthquakes were reported felt across the island of Hawai`i during the past week.

Visit the HVO Web site (http://hvo.wr.usgs.gov) for detailed Kilauea and Mauna Loa activity updates, recent volcano photos, recent earthquakes, and more; call (808) 967-8862 for a Kilauea summary; email questions to askHVO@usgs.gov

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Time-lapse movies of Kilauea’s Coastal Plain and Pali.

This false-color satellite image shows the ongoing lava flow activity on the east rift zone of Kilauea volcano along with nearby cities and towns on the east side of the Big Island. The image was acquired at 10:28 am on June 12 by the Advanced Land Imager sensor aboard the NASA Earth Observing 1 satellite. The image consists of several near-infrared and shortwave infrared channels combined in such a way as to mimic those colors expected by the human eye. Two recent flow fields on Kilauea are obvious: the Mauna Ulu flow field, active between 1969 and 1974, and the current Pu‘u ‘O‘o – Kupaianaha flow field that began in 1983. Today, scattered flows were active in the middle of the flow field and were slowly migrating towards the ocean. These active breakouts are evident as bright red spots in the image; the flow front was about 1.3 km (0.8 miles) from the water. The area spanned by the active flows in the image is about 4.2 km (2.6 miles) long, which is about 40% longer than the main runway at Hilo International Airport (near the top of the image). In addition to regular field visits and continuously-operating webcams, satellite images are another tool that HVO uses to monitor flow field activity.