Volcano news: Mauna Loa volcano (Big Island, Hawaii)
Mauna Loa (Hawai'i): continuing seismic unrest, but no eruption in near future likely
Monday Jul 25, 2016 06:02 AM | BY: T
Weekly earthquake rate of Mauna Loa during the past year (HVO)
The volcano is not erupting, but continues to show unrest. Deformation and seismic activity remain above long-term background levels.
Current seismic recording of MOKD station at Mauna Loa's northern summit (HVO)
According to HVO's latest update, earthquakes at Mauna Loa during the past week "occurred beneath the west and north flanks of the volcano mostly in the 5 – 11 km (3 – 7 miles) depth range. In addition, earthquakes are occurring in south caldera and upper Southwest Rift Zone at depths less than 5 km (3 mi).
Global Positioning System (GPS) measurements show deformation related to inflation of a magma reservoir beneath the summit and upper Southwest Rift Zone, with inflation occurring mainly in the southwestern part of the magma storage complex."
In other words, the current signs of unrest can be interpreted as long- term precursors to the next eruption of Mauna Loa and the most likely area of this happening seems to be the upper SW rift zone. It remains impossible to predict with certainty when it will occur, but a likely time-frame would be within few years (or less) to even one or two decades from now.
Friday, Oct 30, 2015
Seismic unrest continues at the volcano, but at lower levels than during mid-late summer, HVO reports: ... [more]
Friday, Sep 18, 2015
The alert level of the world's largest volcano was raised a notch to "ADVISORY", and the Aviation Color code to "YELLOW" becuase shallow earthquakes have recently appeared in increasing numbers under the volcano. There is no sign that the volcano is about to erupt in a very near future, but it could be a medium- or long-term precursor of a next eruption. ... [more]
Wednesday, Sep 18, 2013
A small earthquake swarm occurred last week under the volcano. During 5-7 September, HVO detected about 350 small earthquakes up to magnitude 2.4 in a tightly clustered area at about 7 km depth west of the summit caldera. Only about 25 were strong enough to be located (map). ... [more]
Friday, Jul 05, 2013
Very weak unrest in the form of inflation and seismic activity continues at the largest active volcano of our earth, which has not erupted since 1984. However, this activity is not strong enough to justify a raise of the alert level from green "normal" to yellow "unrest". There is currently no sign that Mauna Loa will erupt any time soon. ... [more]
Wednesday, Jun 12, 2013
The latest update of the USGS mentions that minor inflation of a shallow magma reservoir beneath Mauna Loa may be occurring. Seismicity rates were slightly elevated. However, the level of observed seismicity is far from alarming and the alert level remains at green. No eruption is expected in the near future. ... [more]