#Mauna Loa Summit

Mauna Loa erupted forty-six years ago this week, on July 5–6, 1975, in a 20-hour event with vents confined to the summit region (the area above 3,660 m/12,000 ft) and lava flows descending to just below 3,170 m (10,400 ft). This was the first eruption in 25 years, at the time the longest quiet stretch since 1843 (we are currently in the longest stretch at 37 years and counting).

There is no tsunami threat to Hawaiʻi after a preliminary magnitude 4.1 earthquake reported at 4:26 a.m. on Tuesday, Sept. 6, 2016 in the summit region of the Mauna Loa Volcano on Hawaiʻi Island, according to the Pacific Tsunami Warning Center.

A 4.0 earthquake occurred off the Southeastern flank of Mauna Loa on the Big Island this morning (Sunday October 3, 2010).  The quake occured at 9:39 a.m. at the 19.2 North and 155.5 West coordinated.  Officials with the Pacific Tsunami Warning Center in Ewa Beach say no tsunami is expected, however, some areas may have […]