four active volcanoes
More about that below. All of the volcanoes are extinct except for Haleakala and Mauna Kea which are considered dormant, and three volcanoes on the Big Island that are active (Hualalai, Mauna Loa, and Kilauea).
The Hawaiian Island chain was formed by volcanic activity below the surface of the sea from a “hot spot”. As they move northwest, they become less volcanic -ally active . Some of the younger volcanoes remain active , and today, visitors can take tours to see active lava flowing into the ocean on the Big Island .
Background Since June 25 2019 , Kīlauea Volcano has been at NORMAL/GREEN. For definitions of USGS Volcano Alert Levels and Aviation Color Codes, see: https://www.usgs.gov/natural-hazards/volcano-hazards/about-alert-levels. Kīlauea remains an active volcano, and it will erupt again.
The most active volcanoes in the world Kilauea volcano on Hawaii is the world’s most active volcano, followed by Etna in Italy and Piton de la Fournaise on La Réunion island.
Activity Summary: Mauna Loa Volcano is not erupting . Rates of deformation and seismicity have not changed significantly over the past week and remain above long-term background levels. The ongoing eruption at Kīlauea Volcano is not affecting Mauna Loa.
Because Mauna Loa and Kīlauea are active volcanoes, the island of Hawaii is still growing . Between January 1983 and September 2002, lava flows added 543 acres (220 ha) to the island.
Currently, for the first time since 2018, ACTIVE flows are occurring inside Halemaumau Crater at Hawaii Volcanoes National Park.
Hawaii’s Active Volcanoes . Two of the world’s most active volcanoes – Kilauea and Maunaloa – can be found on Hawaii Island. Maunaloa last erupted in 1984, and Kilauea’s last eruption was 1983-2018.
On the Island of Hawai’i, the youngest of the main Hawaiian Islands, Kīlauea and Mauna Loa are historically the two most active volcanoes, with frequent eruptions.