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
West Pattern: Moisture Returns + New Winter Alerts for California

West Pattern: Moisture Returns + New Winter Alerts for California

The drought conditions have started to increa

10 Apr 2026 2:15 AM
Severe Storm Threat Builds Across Plains With Flooding Concerns

Severe Storm Threat Builds Across Plains With Flooding Concerns

A spring storm system is building across the

10 Apr 2026 2:15 AM
Artemis II: Splashdown on Friday April 10th

Artemis II: Splashdown on Friday April 10th

NEW RECORD - At 1:56 PM ET on Monday, April 6

10 Apr 2026 2:10 AM
CSU Releases First Hurricane Forecast for 2026

CSU Releases First Hurricane Forecast for 2026

Spring is in full swing which means it's time

10 Apr 2026 2:10 AM
Strong Storms Persist After this Weekend

Strong Storms Persist After this Weekend

Here we go again. After what looks like a lar

10 Apr 2026 2:05 AM
Florida Rain Lingers One More Day

Florida Rain Lingers One More Day

Days of persistent rain have soaked much of F

9 Apr 2026 1:36 PM
Hawaii Braces for Another Powerful Kona Low

Hawaii Braces for Another Powerful Kona Low

A "Kona Low" is lining up to bring a multi-da

9 Apr 2026 10:30 AM