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
Tornadoes Tear Through The Midwest, Threat Heads to the East Coast

Tornadoes Tear Through The Midwest, Threat Heads to the East Coast

MONTROSE, IL - A dangerous tornado tore throu

19 Jun 2026 2:35 AM
High Flood Risk - Remnants of Tropical Storm Arthur Head East

High Flood Risk - Remnants of Tropical Storm Arthur Head East

The National Hurricane Center has been tracki

19 Jun 2026 2:15 AM
Severe Storms, Flash Flooding Threat Returns Across Plains and Midwest This Weekend

Severe Storms, Flash Flooding Threat Returns Across Plains and Midwest This Weekend

Another threat of severe weather is expe

19 Jun 2026 2:10 AM
Heat Alerts & Fire Concerns For Central & West U.S.

Heat Alerts & Fire Concerns For Central & West U.S.

A ridge of high pressure continues to dominat

19 Jun 2026 2:05 AM
Welcome To Monsoon Season - Here's What to Expect

Welcome To Monsoon Season - Here's What to Expect

WELCOME TO THE NORTH AMERICAN MONSOON SEASON.

18 Jun 2026 5:00 PM
El Niño Forms, Very Strong El Niño Likely Late 2026

El Niño Forms, Very Strong El Niño Likely Late 2026

El Niño has arrived! It didn't take long for

15 Jun 2026 8:00 AM
Confirmed Tornadoes in Ohio and Pennsylvania on Sunday

Confirmed Tornadoes in Ohio and Pennsylvania on Sunday

A cold front on Sunday brought severe weather

15 Jun 2026 1:50 AM