- Current Update, last updated Jul 30, 2014 08:33 :
Activity Summary: Kīlauea continued to erupt at its summit and within the East Rift Zone, and gas emissions remained elevated. The summit lava lake level was relatively steady. At the middle East Rift Zone, lava flows continued to erupt from the northeast flank of Puʻu ʻŌʻō cone and reached 4.2 km to the northeast.
Recent Summit Observations: Kīlauea's summit inflated very slightly over the past day. The lava lake level was relatively steady, hovering around 35 m below the Overlook crater rim. Seismic tremor was low, and varied with changes in spattering on the surface of the lava lake. Ten earthquakes were strong enough to be located beneath Kīlauea Volcano: 6 beneath the summit and rift zone areas, 2 on south flank faults, and 2 near Naliʻikakani Point along Kīlauea's south coast. GPS receivers spanning the summit caldera recorded about 5 cm of extension between early May and early July. Since then, there has been no significant change in length between the receivers. During the week ending on 07/22/14, the elevated summit sulfur-dioxide emission rate was 4,500-5,700 tonnes/day (see caveat below). A tiny amount of particulate material was carried aloft by the plume.
Recent East Rift Zone Observations: Tilt at Puʻu ʻŌʻō was flat (no significant inflation or deflation). Small lava ponds were visible yesterday from the air within three of the pits on the crater floor. Only the northern pit did not contain visible lava. The two southerly lava ponds fed several small flows toward the center of the crater over the past 24 hours. The June 27th flow continues to advance to the northeast, but is now mostly focused into one branch. Mapping yesterday afternoon found the front of the flow to be 4.2 km from its vent on the northeast flank of Puʻu ʻŌʻō. The most recent sulfur-dioxide emission-rate measurement was 450 tonnes per day (from all East Rift Zone sources) on July 23, 2014; emission rates have typically ranged between 150 and 450 t/d since July 2012.
- 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