Hawaii Volcano Blog

Hawai‘i Volcano Activity Update: Feb. 8, 2018

February 11, 2018, 7:00 PM HST
* Updated February 9, 3:19 PM
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Hawai‘i Volcano at night. Big Island Now Stock Photo

This past week, Kīlauea Volcano’s summit lava lake level fluctuated with summit inflation and deflation, ranging about 95 to 121 feet below the vent rim. On the East Rift Zone, the 61g lava flow remained active downslope of Pu‘u ‘Ō‘ō, with scattered breakouts on the pali and coastal plain, but no ocean entry. The 61g flows do not pose an immediate threat to nearby communities.

Mauna Loa Volcano is not erupting. Rates of deformation and seismicity remain above long-term background levels. Small-magnitude earthquakes occurred beneath the summit caldera and upper Southwest Rift Zone at depths less than three miles. A few deeper earthquakes were scattered beneath the volcano’s flanks at depths less than eight miles. GPS and InSAR measurements continue to show slow deformation related to inflation of a magma reservoir beneath the summit and upper Southwest Rift Zone, but rates in the past few months have decreased compared to rates of the past year. No significant changes in volcanic gas emissions were measured.

No earthquakes were reported felt in Hawai‘i this past week.

The “Hawai‘i Volcano Activity Update” is a weekly article written by U.S. Geological Survey Hawaiian Volcano Observatory scientists and affiliates.

Call for summary updates at (808) 967-8862 (Kīlauea) or (808) 967-8866 (Mauna Loa); email questions to [email protected].

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