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Volcano Watch: Kilauea activity update for July 24, 2014


Halemaumau’s explosive lava rockfall event (7/23/14)


Time-lapse movie of Halemaumau Crater (7/17-24/14)


Thermal image movie of Halemaumau Crater (7/17-24/14)


Halemaʻumaʻu Overlook Vent from HVO (7/17-24/14)

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

A lava lake within Halema‘uma‘u produced nighttime glow that was visible via HVO’s Webcam during the past week. The lava lake level was relatively steady, hovering around 35 m (~115 ft) below the rim of the Overlook crater. A rockfall from the Overlook crater wall triggered a small explosive event on July 23, bombarding the closed Halema‘uma‘u visitor overlook with spatter.

On Kīlauea’s East Rift Zone, lava flows from Pu‘u ‘Ō‘ō’s northeast flank vent continued to advance slowly toward the northeast, reaching to about 2.4 km (~1.5 miles) from the vent by mid-week. Pu‘u ‘Ō‘ō’s crater floor continued to subside slowly.

No earthquakes were reported felt during the past week on the Island of Hawai‘i.

Visit the HVO website (hvo.wr.usgs.gov) for past Volcano Awareness Month articles and current 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. (7/17-24/14)


Pu’u ‘O’o Crater East Flank. (7/17-24/14)


Pu’u ‘O’o Crater North Flank. (7/18-24/14)


Pu’u ‘O’o Crater South Flank. (7/18-24/14)


Thermal image movie of Pu‘u ‘O‘o Crater (7/17-24/14)

Map showing the “June 27 breakout” flow at Puʻu ʻŌʻō in Kīlauea’s East Rift Zone. The area of the new flow as mapped on June 30 is shown in pink, while widening of the flow as July 18 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; the 2011–2013 episode 61 flows are very light tan; and the 2013–2014 Kahaualeʻa flows are reddish orange.

Map showing the “June 27 breakout” flow at Puʻu ʻŌʻō in Kīlauea’s East Rift Zone. The area of the new flow as mapped on June 30 is shown in pink, while widening of the flow as July 18 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; the 2011–2013 episode 61 flows are very light tan; and the 2013–2014 Kahaualeʻa flows are reddish orange.

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