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
Flood Threat Lingers in Texas After Edouard

Flood Threat Lingers in Texas After Edouard

Intense rainfall has inundated parts of Texas

3 Sep 2026 10:50 AM
Multiple Rounds of Severe Storms Threaten Northeast

Multiple Rounds of Severe Storms Threaten Northeast

NEW YORK - Numerous tornado-warned storms mov

3 Sep 2026 10:00 AM
Labor Day Travel Underway as Americans Hit the Roads and Take to the Skies

Labor Day Travel Underway as Americans Hit the Roads and Take to the Skies

The unofficial end of summer is bringing anot

3 Sep 2026 9:00 AM
Marie Could Impact Labor Day Plans in Southern California

Marie Could Impact Labor Day Plans in Southern California

Moisture from Marie, along with a trough to t

3 Sep 2026 1:20 AM
El Niño Powers a Party in the Pacific

El Niño Powers a Party in the Pacific

The Pacific hurricane season is showing no si

3 Sep 2026 1:05 AM
More Severe Weather For The Plains

More Severe Weather For The Plains

WHAT TO EXPECTThere is a significant severe t

3 Sep 2026 12:55 AM
Monsoon Moisture Brings Flooding Across the Four Corners

Monsoon Moisture Brings Flooding Across the Four Corners

Flood Watches are in effect throughout Arizon

1 Sep 2026 10:20 AM