Monitoring data through the month of July 2015:
Seismicity at Mauna Loa remains elevated in several parts of the volcano. Earthquake rates on the Upper Southwest Rift Zone (Sulfur Cone) and Moku??weoweo Crater remain elevated, with over 150 located earthquakes occurring in July. There was a swarm on the west flank of Mauna Loa, approximately 100 located earthquakes. All earthquakes in the past month have been small relative to earthquake sequences observed before eruptions in 1975 and 1984.
The Mauna Loa GPS network recorded modest net inflation over the month of July, with very little inflation in the second half of the month. Modeling of the pattern of motions since this current episode of inflation started in the summer of 2014 suggests at least two inflating reservoirs–a spherical reservoir near the southeast wall of the summit caldera, and a tabular body that lies beneath the caldera and upper Southwest Rift Zone.
No significant changes in SO2 and CO2 were recorded by the continuous fumarole monitor during July, 2015. The fumarole temperature sensor leveled off a decline that began on 08 May. Since that time, the temperature has decreased from 82 to about 78.5 degrees.
August 14, 2015. Mauna Loa , Hawai :
19°28’30 » N 155°36’29 » W,
Summit Elevation 13681 ft (4170 m)
Current Volcano Alert Level: NORMAL
Current Aviation Color Code: GREEN
Source : HVO