Mauna Loa US Geological Survey Feed Carried by WGN News

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Mauna Loa volcano erupting. Geologists with the Hawaiian Volcano Observatory said if Mauna Loa, the world’s largest active volcano, follows historical patterns, they expect the eruption, which began on 27th of November, to continue for one to two weeks (SOURCE: US Geological feed carried by WGN News). YouTube Tips ⓘ

A recent Mauna Loa eruption began at 11:30 PM HST on November 27, 2022. The eruption was confined to the caldera until approximately 6:30 AM HST on November 28, when the Hawaiian Volcano Observatory (HVO) observed that the eruption had migrated from the summit to the Northeast Rift Zone. Three fissures were initially observed in the rift zone, with the first two becoming inactive by 1:30 PM on November 28, 2022.

Lava flows emanating from the caldera became visible from Kailua-Kona in the hours immediately following the eruption at 11:30 p.m. , November 27, 2022.

Sunrise today is 6:55 AM HST (10:55 AM CST)

Hazard Notification System (HANS) for Volcanoes Volcanic Activity Summary:
At approximately 11:30 p.m. HST this evening, November 27, an eruption began in Moku‘āweoweo, the summit caldera of Mauna Loa, inside Hawai‘i Volcanoes National Park. At this time, lava flows are contained within the summit area and are not threatening downslope communities. Winds may carry volcanic gas and possibly fine ash and Pele’s hair downwind.

Residents at risk from Mauna Loa lava flows should review preparedness and refer to Hawai‘i County Civil Defense information for further guidance.

Based on past events, the early stages of a Mauna Loa eruption can be very dynamic and the location and advance of lava flows can change rapidly.

If the eruption remains in Moku‘āweoweo, lava flows will most likely be confined within the caldera walls. However, if the eruptive vents migrate outside its walls, lava flows may move rapidly downslope.

HVO is in close consultation with emergency management partners and will be monitoring the volcano closely to provide further updates on activity. As soon as possible, HVO will conduct aerial reconnaissance to better describe the eruption and assess hazards.

— Hawaiian Volcano Observatory Sunday, November 27, 2022, 11:45 PM HST

Lava fountains were also observed emanating from the fissures up to 200 feet into the air. As lava flows from the third fissure expanded, the lava cut off the road to the Mauna Loa Observatory at approximately 8:00 p.m. on the November 28, 2022. NOAA reported that all NOAA staff from the Mauna Loa Observatory were safe, but that the facility was not accessible.

The eruption of Mauna Loa continues on the Northeast Rift Zone. Three fissures erupted and as of 1:30 PM, only the lowest of the three fissures was active. Estimates of the tallest fountain heights are between 100–200 ft (30 – 60 m), but most are a few yards (meters) tall. The fissures sent lava flows to the northeast and parallel to the rift zone. Lava flows from the two higher fissures moved downslope but stalled about 11 miles (18 km) from Saddle Road. Fissure 3 is currently feeding lava flows moving east parallel to the Northeast Rift Zone. These remain at above 10,000 feet elevation and over 10 miles (16 km) away from Saddle Road. We do not expect upper fissures to reactivate. However, additional fissures could open along the Northeast Rift Zone below the current location, and lava flows can continue to travel downslope.

There is no active lava within Moku’āweoweo caldera, and there is no lava erupting from the Southwest Rift Zone. We do not expect any eruptive activity outside the Northeast Rift Zone. No property is at risk currently. There is a visible gas plume from the erupting fissure fountains and lava flows, with the plume primarily being blown to the Northwest.


Activity in the rift zone continued on the November 29, with the opening of a fourth fissure at approximately 7:30 p.m. on the November 28 joining the third in releasing lava flows. The front of the third fissure’s lava flows also continued to progress, and was located approximately 2.7 miles from Saddle Road at 7:00 a.m. on December 2, 2022. The HVO currently expects that the eruption will remain within the Northeast Rift Zone, and no property is currently at risk.

Hawai‘i Police Lt. Rio Amon-Wilkins said that an unexploded ordnance was discovered shortly after 9:30 a.m. Sunday, December 4, 2022. HPD’s Special Response Team and Bomb Squad responded along with Pōhakuloa Training Area. The ordnance device was detonated by Hawai’i County personnel (SOURCE: Big Island Now), according to Amy Phillips, public affairs officer with the military facility.



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