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
Tropical Storm Vance Forms In The Pacific

Tropical Storm Vance Forms In The Pacific

Isaias ended the late-season streak of no hur

22 Oct 2026 3:20 PM
Flooding & Severe Storms Target the Southwest

Flooding & Severe Storms Target the Southwest

A strong trough of low pressure is moving ons

22 Oct 2026 12:35 PM
Warmer Than Average: Above-Normal Temperatures Across the Central U.S. This Week

Warmer Than Average: Above-Normal Temperatures Across the Central U.S. This Week

WHAT TO EXPECTA ridge of high pressure will b

22 Oct 2026 12:30 PM
Sub-Tropical Josephine Becomes Tenth Atlantic Named Storm

Sub-Tropical Josephine Becomes Tenth Atlantic Named Storm

SETUPAn upper-level low broke off from the fl

22 Oct 2026 1:40 AM
Several Fires Break Out in SoCal Last Week Amid Santa Ana Wind Event

Several Fires Break Out in SoCal Last Week Amid Santa Ana Wind Event

Santa Ana winds helped several fires grow qui

19 Oct 2026 1:25 PM
Another Cold Morning Before Things Warm Back Up

Another Cold Morning Before Things Warm Back Up

Across portions of the Ohio Valley through th

19 Oct 2026 10:15 AM
Severe Risk Diminishing Saturday Morning for the Northeast

Severe Risk Diminishing Saturday Morning for the Northeast

Severe Storm PotentialSevere risk is decreasi

16 Oct 2026 10:20 AM