- Current Update, last updated Sep 14, 2014 09:52 :
Activity Summary: Kīlauea continued to erupt at its summit and within the East Rift Zone, and gas emissions remained elevated. Summit inflation continued, with only slight fluctuations in lava level. At the middle East Rift Zone, the front of the June 27th flow continues to advance through forest near Kaohe Homesteads, and surface breakouts are also present closer to Puʻu ʻŌʻō.
June 27th Lava Flow Observations: The June 27th lava flow remains active. A Civil Defense overflight this morning observed that the flow front was moving in a more northward direction over the past day, which is a slight shift from its previous northeast direction. The flow had traveled roughly 270 m (300 yards) since Friday, suggesting that the flow advance rate may have slowed over the past several days. The flow front remains close to the boundary of the Wao Kele o Puna forest reserve and Kaohe Homesteads. The flow front is still in thick forest, creating smoke plumes as it engulfs trees and other vegetation, but fires are not spreading away from the flow.
The most recent HVO overflight was Friday afternoon. The flow front at that time was 14.9 km (9.3 miles) from the vent, measured in a straight line, and 170 m (0.1 miles) from the Forest Reserve/Kaohe Homesteads boundary. The actual length of the flow, measured along the lava tube axis (so that bends in the flow are considered) was 17.1 km (10.6 miles). Between September 10 and 12 the advance rate was approximately 250 meters (270 yards) per day.
Small breakouts also remain active closer to Puʻu ʻŌʻō, roughly midway along the length of the June 27th flow. None of these breakouts have been very vigorous recently, but are also producing smoke plumes as they creep into the adjacent forest.
Puʻu ʻŌʻō Observations: There was slight deflationary tilt at Puʻu ʻŌʻō over the past day. Glow was visible overnight above several outgassing openings in the crater floor. Aerial views this week have found small lava ponds within the northeast, north, south and southeast pits. The most recent sulfur-dioxide emission-rate measurement for the East Rift Zone was 400 tonnes per day (from all sources) on September 2, 2014.
Summit Observations: Inflationary tilt continued at Kīlauea's summit. The lava lake level fluctuated with spattering and was roughly 50 m (164 ft) below the Overlook crater rim. There was no major change in seismicity on Kilauea over the past day; 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 September 9, 2014, the elevated summit sulfur-dioxide emission rate was measured at 3,300–7,600 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: WARNING Aviation Color Code: ORANGE