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
Nolo Expected to Brush Hawaii as a Hurricane, Major Flooding Expected

Nolo Expected to Brush Hawaii as a Hurricane, Major Flooding Expected

Residents in Hawaii are bracing, yet again, f

25 Sep 2026 2:00 AM
Tropical Update: Eastern Pacific Stays Active; Fay Reforms In The Atlantic

Tropical Update: Eastern Pacific Stays Active; Fay Reforms In The Atlantic

The Pacific Ocean has been incredibly active

25 Sep 2026 1:55 AM
Early Season Nor'easter Takes Aim at the Northeast

Early Season Nor'easter Takes Aim at the Northeast

A strengthening coastal storm is intensifying

25 Sep 2026 1:55 AM
Incoming Kelvin Wave for Southern California: One Piece of the El Nino Puzzle

Incoming Kelvin Wave for Southern California: One Piece of the El Nino Puzzle

The effects of El Niño are being felt along t

25 Sep 2026 1:00 AM
Major Flooding Possible in the Desert Southwest This Week

Major Flooding Possible in the Desert Southwest This Week

FLASH FLOODINGIt has been a very active week

24 Sep 2026 12:10 PM
More Flooding Concerns Out East

More Flooding Concerns Out East

WHAT TO EXPECTRecord rainfall fell this weeke

22 Sep 2026 1:45 PM
Severe Threat Continues In The Southeast

Severe Threat Continues In The Southeast

WHAT TO EXPECTSevere storms developed Monday

22 Sep 2026 1:20 PM