KÄ«lauea Caldera from HVO (July 24-31, 2014)

Halemaʻumaʻu Overlook Vent from HVO (July 24-31, 2014)

Time-lapse movie of Halemaumau Crater (July 24-31, 2014)

Thermal image movie of Halemaumau Crater (July 24-31, 2014)

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

Kīlauea’s summit lava lake within Halema‘uma‘u produced nighttime glow that was visible via HVO’s Webcam over the past week. The lava lake level was relatively steady, hovering around 35 m (115 ft) below the rim of the Overlook crater.

On Kīlauea’s East Rift Zone, the June 27 flow from Pu‘u ‘Ō‘ō’s northeast flank continued to advance slowly toward the northeast, reaching to about 4.4 km (2.7 miles) from the vent by mid-week. Three small lava ponds were active on the Pu‘u ‘Ō‘ō crater floor for at least part of the week.

No earthquakes were reported felt during the past week in Hawaii.

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

Multi-image movie of Pu’u ‘O’o Crater. (July 24-31, 2014)

Thermal image movie of Pu‘u ‘O‘o Crater (July 24-31, 2014)

Pu’u ‘O’o Crater East Flank. (July 24-31, 2014)

Pu’u ‘O’o Crater North Flank. (July 24-31, 2014)

Pu’u ‘O’o Crater South Flank. (July 24-31, 2014)

flow as mapped on July 18 is shown in pink, while widening of the flow as of July 29 is shown in red. Older lava flows are distinguished by color: episodes 1–48b flows (1983–1986) are shown in gray; episodes 48c–49 flows (1986–1992) are yellow; episodes 50–55 flows (1992–2007) are tan; episodes 58–60 flows (2007–2011) are pale orange; early episode 61 flows (2011–2013) are very light tan; and the recent episode 61 Kahaualeʻa flows (2013–2014) are reddish orange.