Name of Volcano:

Babuyan Claro Volcano

Banahaw Volcano

Biliran Volcano

Mt. Bulusan

Mt. Cabalian

Mt. Cagua

Camiguin de Babuyanes Volcano

Mt. Didicas

Mt. Hibok-hibok

Iraya Volcano

Iriga Volcano

Isarog Volcano

Kanlaon Volcano

Mayon Volcano

Type based on Frequency of eruption:

Active

Active

Active

Active

Active

Active

Active

Active

Active

Active

Active

Active

Active

Active

Type based features:

Stratovolcano

Stratovolcano

Complex Volcano

Stratovolcano

Stratovolcano

Stratovolcano

Stratovolcano

Shield volcano

Stratovolcano

Stratovolcano

Stratovolcano

Stratovolcano

Stratovolcano

Stratovolcano

Location:

Babuyan Island Group, Cagayan in Luzon

Boundaries of Laguna and Quezon in Luzon

Leyte in Visayas

Sorsogon, Bicol Region in Luzon

Southern Leyte in Visayas

Cagayan in Luzon

Babuyan Island Group, Cagayan in Luzon

Babuyan Island Group, Cagayan in Luzon

Camiguin in Mindanao

Batan Island, Batanes in Luzon

Camarines Sur in Luzon

Camarines Sur in Luzon

Negros Oriental and Negros Occidental in Visayas

Albay, Bicol Region in Luzon

Most recent volcanic activity:

- Babuyan Claro has two confirmed historical eruptions: in 1831 and 1860.

       -July 1993, there were reports of earthquakes and alleged drying up of vegetation at the upper slopes and summit area of the volcano but volcanologists said the earthquakes were of tectonic in origin and there was no significant change in the volcanic activity.

Last Eruption In 1909

Last Eruption, September 26, 1939

-Bulusan is generally known for its sudden steam-driven or phreatic explosions. It has erupted 15 times since 1885 and is considered as the 4th most active volcano in the Philippines after Mayon, Taal, and Kanlaon.

      -May 2021. On May 11, PHIVOLCS raised the alert status of Bulusan Volcano from Alert Level 0 to Alert Level 1 due to increased seismic activity since May 8, 2021.

Radiocarbon dating on a pyroclastic flow deposit from the volcano estimated that the last eruption was in 1820 +/- 30 years.

Two historical eruptions have taken place at the volcano. Activity in 1860 was a largely phreatic eruption though it was possibly followed by a pyroclastic flow. Renewed eruptions took place in October 1907 .

-An eruption was recorded around 1857. It was reported as phreatic and possibly partly submarine.

       -In 1991, there were reports of volcanic activity but instrumental     investigations showed no sign of unusual volcanic activity, such as intense fumarolic activity, felt earthquakes, fissuring at the volcano's slopes, or smell of sulphur.

Another report of volcanic unrest was reported in 1993 but an aerial survey of the volcano proved no signs of activity.

1978 January 6 to 9: The last eruption of Didicas to date. The mild eruption blanketed the island with fresh volcanic ashes.

Several historical eruptions have occurred at Hibok-Hibok with the most recent during 1948-1953, when pyroclastic flows devastated island villages.

-Mount Iraya last erupted in 1454, and the Philippine Institute of Volcanology an

Seismology (PHIVOLCS) considers it as one of the active volcanoes in the Philippines.

      - In 1998, volcanologists recorded seismic swarms which led them to form a monitoring network on Batan Island for several months.

Iriga erupted in 1628 and 1642. Iriga is generally known for its phreatic explosions.

Pyroclastic flows originating from lava dome collapses have occurred during the Holocene, one of which has a calibrated radiocarbon date of about 3,500 BCE. Currently, the Isarog vent displays gas seepages, warm springs, and steaming vents.

On March 11, 2020, PHIVOLCS raised the volcano's alert level from 0 to 1 due to its abnormal activities since March 9, 2020. 80 volcanic earthquakes has been plotted since then. On June 21, 2020, the Kanlaon volcano showed some signs of increased unrest. By June 22, 2020, the Kanlaon volcano's activity continued, with a series of tectonic earthquakes ranging from M3.2 to M4.7. A total of 278 earthquakes was observed for a 72-hour period (from June 21, 8AM - June 24, 8AM), possibly related to the magmatic activity underneath the volcano. Earthquakes continued, with steam and fumarolic activity rising 200–300 meters above. PHIVOLCS reminded the public to stay away to the 4-km PDZ (Permanent Danger Zone) around the volcano, as abnormal conditions and sudden phreatic explosions might occur.

The most recent eruptive episode began in early January 2018 that consisted of phreatic explosions, steam-and-ash plumes, lava fountaining, and pyroclastic flows.