Mauna Loa Summit Closed Due to Increased Seismic Activity
Mauna Loa Summit Closed Due to Increased Seismic Activity
HAWAII NATIONAL PARK, Hawaii –Due to elevated seismic activity on Mauna Loa and as a precautionary measure, Hawaii Volcanoes National Park is closing the Mauna Loa summit backcountry until further notice. Mauna Loa Road and the Mauna Loa Lookout at 6,662 feet elevation remain open to the public.
Mauna Loa is not erupting. The volcanic alert level remains at advisory, and the aviation color code remains at yellow. U.S. Geological Survey Hawaiian Volcano Observatory (HVO) scientists will notify the park if conditions change.
HAWAIIAN VOLCANO OBSERVATORY DAILY UPDATE
U.S. Geological Survey
Monday, October 17, 2022, 8:42 AM HST (Monday, October 17, 2022, 18:42 UTC)
MAUNA LOA (VNUM #332020)
19°28’30” N 155°36’29” W, Summit Elevation 13681 ft (4170 m)
Current Volcano Alert Level: ADVISORY
Current Aviation Color Code: YELLOW
Activity Summary: Mauna Loa is not erupting and there are no signs of an imminent eruption at this time. However, Mauna Loa continues to be in a state of heightened unrest as indicated by increased earthquake activity and inflation of the summit. The current unrest is most likely being driven by renewed input of magma 2-5 miles (3-8 km) beneath Mauna Loa’s summit. Monitoring data show no significant changes in the past day.
Observations: During the past 24 hours, HVO detected 30 small-magnitude (below M3.0) earthquakes 2-3 miles (3-5 km) below Mokuāʻweoweo caldera and 4-5 miles (6-8 km) beneath the upper-elevation northwest flank of Mauna Loa. Both of these regions have historically been seismically active during periods of unrest on Mauna Loa.
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