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
Winter Alerts Continue for the Clipper

Winter Alerts Continue for the Clipper

The winter alerts including the Blizzard warn

22 Jan 2026 3:20 AM
Rare Snow & Ice Threatens the South-Central and Eastern U.S. Fri-Sun

Rare Snow & Ice Threatens the South-Central and Eastern U.S. Fri-Sun

A rare winter storm is expected to impac

22 Jan 2026 3:10 AM
Dangerously Cold Temps Spill Into the Lower 48 Late This Week

Dangerously Cold Temps Spill Into the Lower 48 Late This Week

During the winter months, many of us are no s

22 Jan 2026 3:00 AM
Rain and Snow Return to the Southwest

Rain and Snow Return to the Southwest

For much of this winter season, the Southwest

22 Jan 2026 3:00 AM
Cold Stuns Iguanas as Another Cold Snap Reaches South Florida

Cold Stuns Iguanas as Another Cold Snap Reaches South Florida

Sub-freezing temperatures made their way into

20 Jan 2026 10:30 AM
Dangerous Cold follows Weekend Blizzard Conditions in the Northern Plains

Dangerous Cold follows Weekend Blizzard Conditions in the Northern Plains

MONDAY AM UPDATE: WEEKEND SNOW TOTALS: MERCER

19 Jan 2026 11:00 AM
Snow Totals from the Weekend Snow that Targeted I-95 From Virginia through New England

Snow Totals from the Weekend Snow that Targeted I-95 From Virginia through New England

MONDAY AM UPDATE: WInter Weather advisories a

19 Jan 2026 9:10 AM