- Current Update, last updated Jan 30, 2015 08:20 :
Activity Summary: Kīlauea Volcano continues to erupt at its summit and from its East Rift Zone. The leading tip of the June 27th lava flow remains roughly 500 m (~550 yd) from Highway 130 in the area west of the Pāhoa Fire and Police Stations, and the flow tip has not advanced significantly in the past day, although breakouts continue upslope. Deflation associated with a DI event began at the summit on Thursday morning and switched to inflation early Friday morning.
June 27th Lava Flow Observations: An HVO overflight on Thursday morning assessed activity along the entire length of the June 27th lava flow. The primary observation was of scattered breakouts that continue to widen and thicken the flow without resulting in any advancement. The closest breakout to Highway 130 observed during the overflight was about 130 m (142 yards) upslope of the stalled flow tip. Numerous other breakouts were scattered within 3 km (1.9 mi) of the flow tip. In addition, breakouts were noted in areas that have seen persistent activity for months, including where the lava flow exits the crack system, as well as near Kahaualeʻa cone, a few km (miles) downslope from Puʻu ʻŌʻō.
This morning's Civil Defense overflight observed that the flow front did not advance overnight, and that flow widening continues to be the dominant form of activity.
Puʻu ʻŌʻō Observations: Eruptive activity remains steady at Puʻu ʻŌʻō, as indicated by data from instruments on and around the cone. Thermal imagery collected from the air and from webcams shows a few persistent hot spots associated with small collapse pits. Seismic tremor has been low, and no net tilt has occurred over the past 24 hours. The rate of sulfur dioxide emission from all East Rift Zone vents was about 200 tonnes per day, measured on January 7.
Summit Observations: Tiltmeters operating around the summit recorded the occurrence of a DI (deflation-inflation) event over the past day. Deflation started at about 10 AM HST on Thursday and switched to inflation at about 3 AM Friday. The event was small in magnitude, so there was little corresponding change in the level of lava within the summit vent. The lava level did experience its normal fluctuations and changes in spattering behavior, which correlated with changes in seismic tremor. At about 3:20 AM on Friday a small portion of the fresh lava veneer on the vent wall just above the lava surface collapsed into the lava lake, generating a small seismic signal and minor spattering. The depth to the lava surface on Thursday morning was measured to be about 44 m (144 ft) below the vent rim. Emission rates of sulfur dioxide ranged from around 4,400 to 5,100 tonnes/day during the week ending on January 27.
- 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