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Katmai Volcano - John Seach
Alaska, USA
58.27 N, 154.98 W,
summit elevation 2047 m
stratovolcano with central caldera
Katmai volcano contains a lake filled caldera 4.5 x 3 km in diameter. A large eruption of Novarupta volcano in 1912 was previously attributed to Katmai. Caldera formation at Katmai was caused by lava drainage during the eruption of Novarupta.
2003 Event
Strong winds at the volcano on 21st September 2003, remobilised old ash deposits, and produced ashfall on Kodiak Island 100 km away. No eruptions occurred at the volcano. Re-suspended ash was potentially hazardous to aircraft, since it reached an altitude of 2.1 km and drifted up to 400 km. A volcanic ash advisory was issued to warn pilots of the hazard.
Katmai Volcano Eruptions
June 1912.