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Mauna Loa Volcano Erupts in Hawaii

30 Nov 2022, 10:00 am

The Mauna Loa volcano erupted late Sunday night on the Big Island of Hawaii, prompting ashfall advisories and the United States Geological Survey (USGS) to raise the alert levels. This is the first eruption of the world’s largest active volcano since 1984.

The USGS has raised the Volcanic Alert Level to “Warning” meaning a hazardous eruption is ongoing or imminent. Ashfall is likely downwind of the volcano and in addition to the Alert Level there is also an aviation alert of RED, meaning there is significant emission of volcanic ash into the atmosphere. There may be impacts to aviation as a result.

According to USGS, “Eruption has moved to Mauna Loa’s Northeast Rift Zone. Local hazards include lava flows, ash and tephra fall, and heavy vog.” Vog is volcanic smog. 

For perspective, this is occurring on Hawaii’s largest island, named Hawaii and also known as “The Big Island”.

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About the author
Lucy is a digital meteorologist for WeatherNation. Originally from Boston and with 5 years in Colorado, Lucy is now living in southern Alabama with her husband, enjoying all the Gulf Coast has to offer. She stayed in the Northeast for her education, graduating Summa Cum Laude from SUNY Oswego with a B.... Load MoreS. in Meteorology in 2017. Just a few days after graduation, she made the cross country move to Colorado Springs, CO to begin her career at KKTV, the CBS affiliate. Lucy has covered historic blizzards, tornadoes, windstorms, the largest wildfires in Colorado state history and dust storms ... they truly "get it all" in Colorado! Lucy is excited to forecast on a national level and continue her passion of explaining the science behind the weather!