- Current Update, last updated Sep 1, 2014 09:13 :
Activity Summary: Kīlauea continued to erupt at its summit and within the East Rift Zone, and gas emissions remained elevated. Slow inflation switched to slow deflation at the summit, and the lava lake level was relatively stable. At the middle East Rift Zone, the front of the June 27th flow spilled into another ground crack, and surface breakouts also remain active closer to Puʻu ʻŌʻō.
June 27th Lava Flow Observations: The June 27th lava flow remains active. During a Civil Defense flight this morning, the farthest part of the flow, which had been spreading in the forest over the past few days, was seen to be spilling into yet another ground crack about 12.6 km (~7.8 miles) from the vent and about 1.9 km (~1.2 miles) from the eastern boundary of the Wao Kele o Puna Forest Reserve. An HVO flight is scheduled for later today, and an updated flow map and photos will be posted afterward.
Small breakouts also remain active closer to Puʻu ʻŌʻō, roughly midway along the length of the June 27th flow. None of these breakouts were very vigorous when observed Friday, though some are creeping into forest and producing smoke plumes.
Puʻu ʻŌʻō Observations: There were minor fluctuations in tilt at Puʻu ʻŌʻō over the past day, with net inflation. Glow was visible overnight above several outgassing openings in the crater floor. The glow above the northeast pit was from a small lava pond, which has persisted since June 27 but is only observable during overflights. The most recent sulfur-dioxide emission-rate measurement for the East Rift Zone was 300 tonnes per day (from all sources) on August 26, 2014.
Summit Observations: Kīlauea's summit deflated very slightly since yesterday morning. The lava lake did not change level significantly and was roughly 50 m (164 ft) below the Overlook crater rim. There was no significant change in seismicity beneath Kīlauea; seismic tremor at the summit remained low and varied with changes in spattering on the surface of the lava lake. GPS receivers spanning the summit caldera recorded about 5 cm (2 in) of extension between early May and early July. Since then, GPS line length has tracked changes in ground tilt. During the week ending on August 26, 2014, the elevated summit sulfur-dioxide emission rate was measured at 4,100–5,900 tonnes/day (see caveat below), and a tiny amount of particulate material was carried aloft by the plume.
- Volcanic History Overview: Kilauea volcano is one of the most active and best studied volcanoes in the world and is renowned for the accessability of her eruptions. Throughout her history, Kilauea has erupted from three main areas, its summit and two rift zones. Kilauea currently has a summit caldera, but it may not always have been evident. Most eruptions are relatively gentle, sending lava flows downslope from fountains a few meters to a few hundred meters high. Over and over again these eruptions occur, gradually building up the volcano and giving it a gentle, shield-like form. Every few decades to centuries, however, powerful explosions spread ejecta across the landscape. Such explosions can be lethal, as the one in 1790 that killed scores of people in a war party near the summit of Kilauea. Such explosions can take place from either the summit or the upper rift zones. Kilauea has erupted more than 60 times in the past 150 years. The current eruption began in 1983.
- Location: Hawaii and Pacific Ocean, HI
Elevation: 1247 m
Recent Eruption: Ongoing
- Hazard Assessments: Kauahikaua. Jim, 2007, Lava Flow Hazard Assessment, as of August 2007, for Kīlauea East Rift Zone Eruptions, Hawai`i Island, Open-File Report 2007-1264.
- Link to monitoring data: Recent Earthquakes in Hawaii Page
Volcanic Alert Level: WATCH Aviation Color Code: ORANGE