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
Severe Storms Keep Northern U.S. Active

Severe Storms Keep Northern U.S. Active

Monday morning, a storm brought significant w

1 Jul 2026 10:55 AM
Massive Fires Burn in the Four Corners

Massive Fires Burn in the Four Corners

The Aspen Acres fire burning in Southern Colo

1 Jul 2026 10:45 AM
Storms Spark up in the Northeast Ahead of Heatwave

Storms Spark up in the Northeast Ahead of Heatwave

Severe storms will be possible Wednesday and

1 Jul 2026 10:40 AM
Dangerous Stretch of Heat Leads Us to the 4th

Dangerous Stretch of Heat Leads Us to the 4th

The hottest temperatures of the year are loom

1 Jul 2026 10:35 AM
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

30 Jun 2026 9:00 PM
'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
Severe Threat Tracks into the Northeast Friday

Severe Threat Tracks into the Northeast Friday

Another day, another Illinois tornado. That's

26 Jun 2026 2:25 AM