Mauna Loa eruption: What are the threats
Hawaii health officials are warning the public about vog
{{#rendered}} {{/rendered}}Mauna Loa, the world's largest active volcano, is erupting for the first time in nearly four decades.
The "Long Mountain" volcano's lava has crossed onto an access road, but the eruption still remains on the northeast rift zone.
The eruption, officials ensure, does not pose a threat to any communities at this time.
{{#rendered}} {{/rendered}}Gov. David Ige issued an emergency proclamation and tweeted that it was safe to view the volcano from a distance.
HAWAII'S MAUNA LOA ERUPTION: STUNNING VIDEO SHOWS LAVA SPEWING INTO AIR
However, the Hawaii State Department of Health is warning residents and tourists about the impacts of the eruption.
{{#rendered}} {{/rendered}}A view from Mauna Loa, the world's largest active volcano, began to erupt overnight, prompting authorities to open shelters "as a precaution" on Nov. 29, 2022, in Hawaii. ((Photo by United States Geological Survey/Handout/Anadolu Agency via Getty Images))
Although air quality monitoring stations across the state report that air quality remains normal, the primary concern for the public is "voggy" conditions.
The term "vog" refers to the hazy air pollution caused by volcanic emissions, which are primarily water vapor, carbon dioxide and sulfur dioxide gas.
HAWAII, UNITED STATES - NOVEMBER 29: A view from Mauna Loa, the world's largest active volcano, began to erupt overnight, prompting authorities to open shelters "as a precaution" on November 29, 2022. in Hawaii, United States. ((Photo by United States Geological Survey/Handout/Anadolu Agency via Getty Images))
The eruption could cause the levels of sulfur dioxide to increase and fluctuate in areas of the state, with conditions changing rapidly.
{{#rendered}} {{/rendered}}MAUNA LOA VOLCANO ERUPTION: WHAT TO KNOW
Areas closer to eruptive vents can be exposed to both sulfur dioxide and fine particles during periods of vog.
Visitors and locals are being advised to prepare and remain alert of the surrounding conditions and – in the event of foggy conditions – precautionary measures are advised.
{{#rendered}} {{/rendered}}A view from Mauna Loa, the world's largest active volcano, began to erupt overnight, prompting authorities to open shelters "as a precaution" on Nov. 29, 2022, in Hawaii. ((Photo by United States Geological Survey/Handout/Anadolu Agency via Getty Images))
People should reduce outdoor activities that cause heavy breathing, and especially sensitive groups like children, the elderly and individuals with pre-existing respiratory conditions.
Those with asthma or a chronic respiratory disease should have medications available and people experiencing health effects should contact their medical provider if symptoms develop.
A view from Mauna Loa, the world's largest active volcano, began to erupt overnight, prompting authorities to open shelters "as a precaution" on Nov. 29, 2022, in Hawaii. ((Photo by United States Geological Survey/Handout/Anadolu Agency via Getty Images))
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{{#rendered}} {{/rendered}}Doors and windows should be closed and air conditioning units should be set to recirculate.
Face masks do not provide protection from sulfur dioxide or vog, but can be effective in reducing inhaled hazardous particulates associated with falling ash and Pele's hair.
The Associated Press contributed to this report.