5/09/2015 — 4.5 magnitude earthquake strikes Hawaii — Flank of Mauna Loa Volcano

Hawaii now showing larger earthquake activity.

After a rapid buildup of lava inside the lava lake of Kilauea volcano over the past 2 weeks, a magnitude 4.5 earthquake has now struck the flanks Mauna Loa , and Kilauea Volcanoes.

mauna loa earthquake 4.5m may 9 2015

This 4.5M earthquake follows a swarm of events which has struck over the past 2 weeks.

We have seen dozens of 2.0 – 3.0M range events off the South shores of the Big Island of Hawaii which led up to this larger 4.5M earthquake.

Over the past 7 days (up to May 9, 2015) the buildup has been quite clear.

past 7 days of 2.5m greater hawaii may 9 2015

Above: May 9, 2015 – Past 7 days of 2.5M+ earthquakes in Hawaii shows heavy movement underway on the South flank of the big Island near Mauna Loa + Kilauea Volcanoes


The lava lake in Kilauea caldera fully overflowed about 10 days ago.  See the overflow event here:


Information on the M4.5 from the USGS:

Magnitude / uncertainty 4.5 ml± 0.2
Location / uncertainty 19.142°N 155.598°W± 0.5 km
Depth / uncertainty 9.7 km± 0.6
Origin Time 2015-05-09 12:18:48.240 UTC
Number of Stations 60
Number of Phases 86
Minimum Distance 11.66 km (0.10°)
Travel Time Residual 0.28 sec
Azimuthal Gap 119°
FE Region Island of Hawaii, Hawaii (613)


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