| start date | end date | title | description | icon | date limit | importance |
link | modal |
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| 1912-06-06 | 1912-6-9 | Katmai: 1912 | Fierstein and Hildreth (2001) provide information about the magitude of the 1912 eruption at Novarupta and Katmai: "The world's largest volcanic eruption of the 20th century broke out at Novarupta [see fig. 1 in original text] in June 1912, filling with hot ash what came to be called the Valley of Ten Thousand Smokes and spreading downwind more fallout than all other historical Alaskan eruptions combined. Although almost all the magma vented at Novarupta, most of it had been stored beneath Mount ... More information | exclamation.png | ye | 50 | http://www.avo.alaska.edu/volcanoes/activity.php?volcname=Katmai&eruptionid=494&page=basic | |
| 1914-00-00 | | Katmai: 1914 | Coleman (1946) reports that "There were eruptions of Katmai on a smaller scale in 1914, but the volcano is now quiet." However, Hildreth (1983) states: "Published compilations notwithstanding, there are no credible reports of historic eruptions in the Katmai group except at Novarupta in 1912 and at Trident in 1953 - 1968." | information.png | ye | 50 | http://www.avo.alaska.edu/volcanoes/activity.php?volcname=Katmai&eruptionid=495&page=basic | |
| 1920-03-09 | | Katmai: 1920 | Coats (1950) reports minor eruptions at Katmai on March 9, 1920. However, Hildreth (1983) states: "Published compilations notwithstanding, there are no credible reports of historic eruptions in the Katmai group except at Novarupta in 1912 and at Trident in 1953 - 1968." | information.png | ye | 50 | http://www.avo.alaska.edu/volcanoes/activity.php?volcname=Katmai&eruptionid=496&page=basic | |
| 1921-11-27 | | Katmai: 1921 | Coats (1950) reports minor explosive eruptions at Katmai on November 27, 1921. However, Hildreth (1983) states: "Published compilations notwithstanding, there are no credible reports of historic eruptions in the Katmai group except at Novarupta in 1912 and at Trident in 1953 - 1968." | information.png | ye | 50 | http://www.avo.alaska.edu/volcanoes/activity.php?volcname=Katmai&eruptionid=497&page=basic | |
| 1927-00-00 | | Katmai: 1927 | From Jaggar (1927): "When Dr. Jaggar was at Naknek May 24, 1927, the teacher there, who had been to the Valley of Ten Thousand Smokes, reported that a trapper in January, 1927, had seen an ash eruption from one of the Katmai hills, and that two trappers were missing who had gone into that region." However, Hildreth (1983) states: "Published compilations notwithstanding, there are no credible reports of historic eruptions in the Katmai group except at Novarupta in 1912 and at Trident in 1953 ... More information | information.png | ye | 50 | http://www.avo.alaska.edu/volcanoes/activity.php?volcname=Katmai&eruptionid=498&page=basic | |
| 1929-12-00 | | Katmai: 1929 | Jaggar (1932) reported that "volcanoes of the Katmai group continued fuming" in 1929, and Coats (1950) reported Katmai active in December, 1929. However, Hildreth (1983) states: "Published compilations notwithstanding, there are no credible reports of historic eruptions in the Katmai group except at Novarupta in 1912 and at Trident in 1953 - 1968." | information.png | ye | 50 | http://www.avo.alaska.edu/volcanoes/activity.php?volcname=Katmai&eruptionid=499&page=basic | |
| 1931-05-08 | 1931-7-00 | Katmai: 1931 | Finch (1931) recorded: "Katmai volcano was observed to be smoking early in July." Coats (1950) also reports Katmai smoking on May 8, 1931. However, Hildreth (1983) states: "Published compilations notwithstanding, there are no credible reports of historic eruptions in the Katmai group except at Novarupta in 1912 and at Trident in 1953 - 1968." | information.png | ye | 50 | http://www.avo.alaska.edu/volcanoes/activity.php?volcname=Katmai&eruptionid=500&page=basic | |
| 1951-08-00 | | Katmai: 1951 | From Jones (1952): "On August 9 [1951], A.E. Jones saw the volcanoes from Pavlof to Douglas, and, although an ash fall near Katmai had been reported a few days before, he could see no signs of activity." Hildreth (1983) states: "Published compilations notwithstanding, there are no credible reports of historic eruptions in the Katmai group except at Novarupta in 1912 and at Trident in 1953 - 1968." | information.png | ye | 50 | http://www.avo.alaska.edu/volcanoes/activity.php?volcname=Katmai&eruptionid=501&page=basic | |
| 2003-09-21 | | Katmai: 2003 | From McGimsey and others (2005): "On September 21, 2003, strong northwesterly winds sweeping through the VTTS in Katmai National Park entrained ash from the 1912 deposits to form a substantial cloud that was carried over Shelikof Strait, Kodiak Island, and the Gulf of Alaska. Particle fallout on Kodiak Island was mistaken as material from an eruption cloud. Upon receiving the reports from Kodiak, AVO scientists analyzed satellite imagery and area seismic data and determined that the phenomenon ... More information | information.png | ye | 50 | http://www.avo.alaska.edu/volcanoes/activity.php?volcname=Katmai&eruptionid=502&page=basic | |
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