Hawaii Mauna Loa Volcano Update 10/22/22 - lanikai-beach.net

This Kilauea Volcano Eruptions presentation video contains media obtained from USGS and Google Earth with some of the significant October 2022 updates from; USGS at https://www.usgs.gov/volcanoes/maunaloa/photo-video-chronology and earthquakes data.

According to the USGS Mauna Loa Volcano submarine flanks descend to the seafloor an additional 5 km (16,400 ft), and the seafloor in turn is depressed by Mauna Loa’s great mass another 8 km (26,200 ft). This makes the volcano’s summit 17 km (55,700 ft) above its base! The enormous volcano covers half of the Island of Hawai‘i and by itself amounts to about 85 percent of the area of all the other Hawaiian Islands combined.

The Hawaiian name “Mauna Loa” means “Long Mountain.” This name is apt, for the subaerial part of Mauna Loa extends for 120 km (74 mi) from the southern tip of the island to the summit caldera and then east-northeast to the coastline near Hilo.

Mauna Loa is among Earth’s most active volcanoes, having erupted 33 times since its first well-documented historical eruption in 1843. It has produced large, voluminous flows of basalt that have reached the eight times since 1868. It last erupted in 1984, when a lava flow came within 7.2 km (4.5 mi) of Hilo, the largest population center on the island. Mauna Loa is certain to erupt again, and with such a propensity to produce large flows, we carefully monitor the volcano for signs of unrest.

U.S. Geological Survey
Friday, October 14, 2022, 11:46 AM HST (Friday, October 14, 2022, 21:46 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


Two moderate earthquakes occurred beneath the southern end of the Island of Hawai‘i at 9:07 a.m. this morning. The first earthquake (magnitude-4.6) was slightly offshore and south of Pāhala, at 13 km (8 mi) depth. It was followed 24 seconds later by a larger magnitude-5.0 earthquake just south of Pāhala, 7.4 km (4.6 mi) beneath Highway 11. These two larger earthquakes were followed by a string of aftershocks, mostly less than magnitude-3.0, but including some larger ones up to magnitude-4.0. The aftershock sequence is continuing, between 0–12 km (0–7 mi) depth, south of Pāhala. The aftershocks could continue for several days to possibly weeks and may be large enough to be felt.

The two larger earthquakes were reported by hundreds of people from the Island of Hawaiʻi and felt to a lesser extent across the entire State of Hawai’i. Shaking from the larger earthquakes may have been strong enough to do minor local damage, especially to older buildings. The two earthquakes occurred within 24 seconds of each other creating shaking of longer duration and possibly greater intensity than either of the earthquakes would have created on their own.

This sequence of earthquakes appears to be related to readjustments along the southeast flank of Mauna Loa volcano. There has been no immediate effect on the continuing unrest beneath Mauna Loa summit, which remains elevated at levels similar to the past week. On several occasions large earthquakes have preceded past eruptions of Mauna Loa, though these have typically been larger than today’s earthquakes. It is known at this time if this sequence of earthquakes is directly related to the ongoing unrest on Mauna Loa.

The Hawaiian Volcano Observatory will continue to closely monitor Mauna Loa for any changes.  


Magnitude: 5.0 (https://earthquake.usgs.gov/earthquakes/eventpage/us6000itqe)
Date and time: October 14, 2022 at 09:07:29 a.m. HST
Location: 4 mi (6 km) of Pāhala, Island of Hawaiʻi
Depth: 4.5 mi (7.5 km) below sea level
Aftershocks are occurring and are expected to continue in the following days and possibly weeks.
The magnitude-5.0 earthquake was preceded by a magnitude-4.6 event that overlapped with it (https://earthquake.usgs.gov/earthquakes/eventpage/hv73178772).

Mauna Loa activity summary also available by phone: (808) 967-8866

HVO scientists collect detailed data to assess hazards and understand how the eruption is evolving at Kīlauea’s summit, all of which are shared with the Park Service and emergency managers. Access to this hazardous area is by permission from, and in coordination with, Hawai‘i Volcanoes National Park.

Please see the Hawaiʻi Volcanoes Park website for visitor information: https://www.nps.gov/havo/index.htm. Visitors to Hawai’i Volcanoes National Park should note that under southerly (non-trade) wind conditions, there is potential for a dusting of powdery to gritty ash composed of volcanic glass and rock fragments.

Media Source: USGS HVO, Google
Music from YouTube Audio Library for Creators.

Please note that the original USGS medias in this video had complete silence for the audio channel.

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