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December 4, 2022

Mauna Loa's Northeast Rift Zone eruption continues. There is a visible gas plume from the erupting fissure fountains and lava flows.

Mauna Loa update: https://www.usgs.gov/volcanoes/mauna-loa/volcano-updates

County of Hawaii Civil Defense Agency: https://hawaii-county-civil-defense-agency-hawaiicountygis.hub.arcgis.com/

Most recent eruption map: https://www.usgs.gov/media/images/december-3-2022-mauna-loa-eruption-map

New webcam: [M7cam] Live Image of Mauna Loa's Northeast Flank from Mauna Kea; view is to the south [M7cam]. See https://www.usgs.gov/observatories/hvo/m7cam-mauna-loa-northeast-flank   

Color photograph of volcanic vent
Aerial view of fissure 3 eruption lava channel on the Northeast Rift Zone of Mauna Loa the morning of December 4, 2022. Fissure 3 has produced several lava channels that are winding their way down the northeast slope of Mauna Loa, coalescing into a single flow front.  As of 7 a.m. today, December 4, the flow front was about 2.3 mi (3.6 km) from the Daniel K. Inouye Highway (Saddle Road). USGS image by L. DeSmither. 
Color photograph of volcanic vent
Aerial view of fissure 3 erupting on the Northeast Rift Zone of Mauna Loa the morning of December 4, 2022. Lava fountaining at the vent has been approximately 100 feet (33 m) tall over the past day, depositing fragments of volcanic material in the area near the vent.  USGS image by L. DeSmither. 
Color photograph of lava flow
The ongoing Northeast Rift Zone eruption of Mauna Loa, as viewed from the Daniel K. Inouye Highway (Saddle Road) shortly after 6 a.m. HST on December 4, 2022. The eruption continues, with a flow front that is slowly advancing towards the highway. USGS image by N. Deligne. 
Color photograph of volcanic vent
Aerial view of fissure 3 erupting on the Northeast Rift Zone of Mauna Loa the morning of December 4, 2022. USGS image by L. DeSmither. 
Color photograph of webcam monitoring eruption
The Hawaiian Volcano Observatory has deployed a number of webcams to aid in monitoring the ongoing eruption of Mauna Loa's Northeast Rift Zone eruption. This image shows two webcams, which are monitoring the fissure 3 lava channel. USGS image by H. Dietterich. 
Color photograph of scientist in the field
Hawaiian Volcano Observatory Scientists are monitoring the eruption of fissure 3 on the Northeast Rift Zone of Mauna Loa. In the field, scientists relay geospatial information on the lava flow front location, document fissure 3 lava fountain and lava channel dynamics, and deploy new instrumentation to help monitor the eruption remotely. USGS image by L. Desmither. 
View of fissure 3 erupting on the Northeast Rift Zone of Mauna Loa the morning of December 4, 2022. Lava fountaining at the vent was approximately 100 feet (33 m) tall yesterday; fragments of lava are deposited in the area near the vent construct the cone visible in this video. USGS video by F. Trusdell. 
Aerial view of fissure 3 erupting on the Northeast Rift Zone of Mauna Loa the morning of December 4, 2022. USGS video by H. Dietterich.

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