Hawaii is a group of volcanic islands in the central Pacific Ocean. The islands lie 2,397 miles (3,857 km) from San Francisco, California, to the east and 5,293 miles (8,516 km) from Manila, in the Philippines, to the west. The capital is Honolulu, located on the island of Oahu.
about a million years old
Kick-'Em-Jenny) is an active submarine volcano or seamount on the Caribbean Sea floor, located 8 km (5 mi) north of the island of Grenada and about 8 km (5 mi) west of Ronde Island in the Grenadines.
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.
More on VolcanoDiscoveryKilauea volcano, Hawai'i: Kilauea is the most active volcano on earth, in constant eruption since 1983!
Volcanic Hazards and MonitoringAlthough it has been 200 hundred years since the last eruption of Hualalai, it will almost certainly erupt again. The eruptive recurrence interval of Hualalai for all of Holocene time is on the order of 50 years (about 200 eruptions in 10,000 years).
Hawaii's main volcanoes are “shield” volcanoes, which produce lava flows that form gently sloping, shield-like mountains. A good example is Maunaloa, the most massive mountain on earth, deceptively covering half of Hawaii Island.
Most of the time when lava is flowing on the surface it is possible to see it at a safe distance from a public viewing area. From these areas active lava can be visible directly, or is accessible with a (short) hike.
The Island of Maui has one active volcano, Haleakalā, which has erupted at least 10 times during the past 1,000 years. Kīlauea, the youngest and most active volcano on the Island of Hawai'i, has erupted almost continuously since 1983 to 2018 at Pu'u 'Ō'ō and other vents along the volcano's East Rift Zone.
Hawaii's Big Island, like the name implies, is the state's biggest island. And it is actually still growing, to date, because of its active volcanoes. The volcanic island has, so far, a land area of 4,028 square miles, which makes it larger than when all the state's other islands are combined.
Of the active volcanoes, two of them remain dormant: Haleakala on Maui, and Hualalai and Mauna Kea on Hawaii Island. Dormant volcanoes are not considered completely extinct because they erupted within the last 10,000 years.
A young volcanic island has been growing in the western Pacific Ocean since 2013. Since mid-June 2020, it has been going through a vigorous growth spurt. The images on this page show some of the latest eruptive activity at Nishinoshima, a volcanic island about 1,000 kilometers (600 miles) south of Tokyo, Japan.
When did Kilauea last erupt?
The largest dormant volcano in the world, Haleakalā, makes up a large part of Maui. Mount Haleakalā is also called the East Maui Volcano. Haleakalā is considered a dormant volcano because it has not erupted in a long time, but it could erupt again in the future.
Lavas range in temperature from about 800 °C (1,470 °F) to 1,200 °C (2,190 °F). This is similar to the hottest temperatures achievable with a forced air charcoal forge. A lava is most fluid when first erupted, becoming much more viscous as its temperature drops.
Let's take a look at the world's most active volcanoes and where these volcanoes are located.
- Mauna Loa - Hawaii. Source: R.W. Decker/Wikimedia Commons.
- Eyjafjallajokull - Iceland.
- Mount Vesuvius - Italy.
- Mount Nyiragongo - Congo.
- Taal Volcano - Philippines.
- Mount Merapi - Indonesia.
- Galeras - Colombia.
- Sakurajima - Japan.
