Shishaldin 1955/7

Start: July 1, 1955 ± 14 Days [1]

Event Type: Explosive

Max VEI: 2 [2]

Event Characteristics:
  • "Fire", "Glowing", or incandescence [1] [4]
  • Radial fissure [4]

Description: From Anchorage Daily News (1955): "Heavy volcanic ash today is blanketing the Cold Bay area, near the tip of the Alaska Peninsula.
"Ashes from 'Old Smoking Moses,' Mt. Shishaldin, the active volcano some fifty miles southwest of Cold Bay on Unimak Island. Shishaldin has been in a state of eruption for the past two weeks.
"Weather reports from Cold Bay advise that the ash fall is from Shishaldin rather than Mt. Pavlof which is located only 25 to 30 miles northeast from Cold Bay. Winds in the area have been recorded as being from the southwest instead of the northeast.
"The report was confirmed by the Anchorage weather bureau today.
"Last Sunday, a river of flaming lava poured down the steep slopes of 9,979-foot Shishaldin in what was termed a major eruption.
"Coast Guard officials at Cape Sarichef have reported Shishaldin in a state of 'intermittent eruption.'
"Fire and huge plumes of smoke were observed to belch from the cone all day Sunday."
A July 22, 1955 UP article reported: "Mount Shishaldin is continuing to blow its top following the largest eruption in the memory of the island's residents.
The entire top of the mountain 'seems to have exploded,' according to a report received today from the Cape Sarichef coast guard station * * *. Huge blots of lighting flashed over the volcano's fiery cone following the latest eruption, causing radio interference in the area, a coast guard official reported.
"Mount Shishaldin's top has been partially blown away, the commanding officer at Cape Sarichef reported. A new fissure has been ripped into the side of the peak and it is spewing a gusher of lava for a distance of several thousand feet."
An Associated Press article from July 23, 1955, states that Gordon Gay, Cold Bay agent for Reeve Aleutian Airways, estimated the "clouds of smoke, soot, and ash are rising in the air over Shishaldin to an estimated 50,000 feet."

References Cited

[1] Eruption of Shishaldin continuing, 1955

Unknown, 1955, Eruption of Shishaldin continuing: Anchorage Daily News, v. VIII, n. 61, p. 1.

[2] Volcanoes of the world: an illustrated catalog of Holocene volcanoes and their eruptions, 2003

Siebert, L., and Simkin, T., 2002-, Volcanoes of the world: an illustrated catalog of Holocene volcanoes and their eruptions: Smithsonian Institution, Global Volcanism Program Digital Information Series GVP-3, http://volcano.si.edu/search_volcano.cfm, unpaged internet resource.

[3] Aleutian volcano spewing smoke, ash, 1955

Associated Press, 1955, Aleutian volcano spewing smoke, ash: The Lima News, Lima, OH, July 23, 1955, p. 5.

[4] Aleutian peak blows its top, 1955

UP, 1955, Aleutian peak blows its top: San Mateo Times, San Mateo, CA, July 22, 1955, p. 5.

Complete Eruption References

Volcanoes of the world: an illustrated catalog of Holocene volcanoes and their eruptions, 2003

Siebert, L., and Simkin, T., 2002-, Volcanoes of the world: an illustrated catalog of Holocene volcanoes and their eruptions: Smithsonian Institution, Global Volcanism Program Digital Information Series GVP-3, http://volcano.si.edu/search_volcano.cfm, unpaged internet resource.
website

Volcanoes of the world [2nd edition], 1994

Simkin, Tom, and Siebert, Lee, 1994, Volcanoes of the world [2nd edition]: Tucson, Arizona, Geoscience Press, 349 p.
Hard Copy held by AVO at FBKS - CEC shelf

Eruption of Shishaldin continuing, 1955

Unknown, 1955, Eruption of Shishaldin continuing: Anchorage Daily News, v. VIII, n. 61, p. 1.

Aleutian volcano spewing smoke, ash, 1955

Associated Press, 1955, Aleutian volcano spewing smoke, ash: The Lima News, Lima, OH, July 23, 1955, p. 5.
Hard Copy held by AVO at FBKS - CEC file cabinet

Aleutian peak blows its top, 1955

UP, 1955, Aleutian peak blows its top: San Mateo Times, San Mateo, CA, July 22, 1955, p. 5.
Hard Copy held by AVO at FBKS - CEC file cabinet
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