Mauna Loa Volcano Erupts in Hawaii

news image
Special Stories
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. https://twitter.com/WeatherNation/status/1598029096663015426 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". https://twitter.com/WeatherNation/status/1597236586793816064 For more on this and your top weather headlines, join WeatherNation always streaming 24/7.
All Weather News
More
Warm Weather Returns Out West

Warm Weather Returns Out West

A ridge of high pressure is building in our w

7 Jul 2026 10:40 AM
Massive Fires Burn in the Four Corners

Massive Fires Burn in the Four Corners

The Aspen Acres fire continues to burn in Sou

7 Jul 2026 10:30 AM
Flash Flood Threat Across the Northeast and New England

Flash Flood Threat Across the Northeast and New England

NEW JERSEY - Heavy rainfall rates of around 2

7 Jul 2026 10:25 AM
Stormy Pattern Ahead for the Northern Plains

Stormy Pattern Ahead for the Northern Plains

NORTHERN PLAINS - Severe weather is in the fo

7 Jul 2026 10:15 AM
Muggy and Stormy in the South

Muggy and Stormy in the South

SOUTHEAST - It's been muggy and stormy in the

5 Jul 2026 8:40 PM
Slow-Moving Front No Longer Expected to Develop Tropically, Monitoring Eastern Pacific

Slow-Moving Front No Longer Expected to Develop Tropically, Monitoring Eastern Pacific

Early in the season, we watch closer to the c

1 Jul 2026 12:15 AM
'MCS' Season Brings Severe and Flooding Threats Across the Southeast

'MCS' Season Brings Severe and Flooding Threats Across the Southeast

As Summer settles in across the Central U.S.,

28 Jun 2026 2:10 AM