Time-lapse thermal image movie of Halemaumau Overlook Vent. February 12-19, 2015. Photos courtesy of USGS/HVO

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

The winds Thursday (Feb 19) were carrying the gas plume from Halemaʻumaʻu towards the northeast. Volcano Village is in the bottom portion of the photograph and Mauna Loa is in the upper right. Photo taken Friday, February 19, 2015 courtesy of USGS/HVO

KÄ«lauea’s East Rift Zone lava flow fed breakouts across the leading 2.5 km (1.6 mi) of the flow. When mapped on Thursday, February 19, the most distal activity on the flow field was a patch of small breakouts about 1 km (0.6 miles) upslope of Highway 130. Breakouts were also active in an area roughly 6 km (4 miles) upslope of the flow front and along the edge of the forest northeast of PuÊ»u ʻŌʻō.

The summit lava lake level fell from about 10 m (30 ft) during the week, and was about 45 meters (150 ft) below the rim of the Overlook crater as of Thursday, February 19, 2015.

Four earthquakes in the past week were reported felt on the Island of Hawai‘i. On Monday, February 16, 2015, at 12:49 p.m. HST, a magnitude-3.2 earthquake occurred 3.6 km (2.2 mi) south of Pa‘auilo at a depth of 8.8 km (5.5 mi). Later that day, at 1:40 p.m., a magnitude-3.3 earthquake occurred 4.5 km (2.8 mi) southwest of Pa‘auilo at a depth of 10.2 km (6.4 mi), at 4:37 p.m., a magnitude-2.5 earthquake occurred 6.7 km (4.2 mi) northwest of Captain Cook at a depth of 13.0 km (8.1 mi). On Tuesday, February 17, at 3:17 a.m., a magnitude-3.9 earthquake occurred 51.1 km (31.7 mi) west of Kailua at a depth of 12.4 km (7.7 mi).