Shishaldin - Historic eruptions

Reported Activity

start date	end date	title	description	icon	date limit	importance	link
1775-00-00	1775-00-00	Shishaldin: 1775	From Veniaminov (1840, translated by Lydia T. Black and R.H. Geoghegan, 1984): "About 1795, with the wind from the SW, the range on the SW end of Unimak blew up with a terrible thunder and an eruption of ash [pepel] or soot [sazha], white in color, in such a great quantity that, for several hours in the middle of the day, not only in the neighboring villages on Aliaksa but even on Unga, there was absolute darkness. The eternal ice, lying on that range, slid down along both sides together with ... More information	asterisk_yellow.png	ye	50	http://www.avo.alaska.edu/volcanoes/activity.php?volcname=Shishaldin&eruptionid=343&page=basic
1790-04-19	1790-6-18	Shishaldin: 1790	From Grewingk (1850, translated 2003 by Fritz Jaensch): "In Sauer (Billings's exped. [Sauer, Eng. Ed., London, 1802, p. 164]) it states: '[The terrain of Unimak Island] is high, broken, and rugged, and there are three very conspicuous mountains upon it. The summit of the first [Pogromnaia?] is very irregular; the second [Shishaldin] is a perfect cone towering to an immense height, and discharging a considerable body of smoke from its summit [19 April 1790]; the third (Khaginak) has its summit ... More information	asterisk_yellow.png	ye	50	http://www.avo.alaska.edu/volcanoes/activity.php?volcname=Shishaldin&eruptionid=344&page=basic
1824-00-00	1825-3-10	Shishaldin: 1824 - 1825	From Veniaminov (1840, translated by Lydia T. Black and R.H. Geoghegan, 1984), writing of Shishaldin Volcano: "[T]oward the end of 1824 and early in 1825, up to the 10th of March, that is, until the explosion of the Issanakhskii Range, it was burning with a fierce flame." Although Veniaminov writes that the eruption of the 10th of March was from the "northeast range of Unimak" and that "Shishaldinskaia sopka, located not far from this range on the west, emitted flame before this time, but after ... More information	exclamation.png	ye	50	http://www.avo.alaska.edu/volcanoes/activity.php?volcname=Shishaldin&eruptionid=345&page=basic
1826-10-00	1831-3-00	Shishaldin: 1826 - 1831	Shishaldin Volcano appears to have been in intermittent eruption from October, 1826, until 1831. This description by Litke (translated in 1987 by R.A. Pierce) perhaps refers to Shishaldin: "From October 1826 until January 1827 there had been almost uninterrupted eruptions of ash of almost unparalleled violence at a location where no one had seen a crater before. The ash, pushed first one way and then another by the wind, had covered all the surrounding countryside and even the quite distant ... More information	exclamation.png	ye	50	http://www.avo.alaska.edu/volcanoes/activity.php?volcname=Shishaldin&eruptionid=346&page=basic
1836-00-00		Shishaldin: 1836	Grewingk (1850, translated 2003 by Fritz Jaensch) reports "three smoking locations on Unimak" and Shishaldin "erupting with fire" in 1836. This eruption is not found in subsequent compilations (other than Sapper, 1917), although other compilations list a 1838 eruption for Shishaldin that is not listed in Grewingk.	asterisk_yellow.png	ye	50	http://www.avo.alaska.edu/volcanoes/activity.php?volcname=Shishaldin&eruptionid=348&page=basic
1838-00-00		Shishaldin: 1838	Grewingk (1850, translated 2003 by Fritz Jaensch) does not report an eruption for Shishaldin during 1838, but rather 1836. However, all other compilers report an eruption for Shishaldin during 1838. Dall (1870; the first compiler after Grewingk) says Shishaldin "emitted fire, and smoke arose from three points." This description is very similar to Grewingk's description of the 1836 eruption. It is unclear if these two citations are describing the same eruption (in 1836, rather than 1838?) or ... More information	asterisk_yellow.png	ye	50	http://www.avo.alaska.edu/volcanoes/activity.php?volcname=Shishaldin&eruptionid=347&page=basic
1842-00-00		Shishaldin: 1842	From Kisslinger (1983), translating Doroshin (1870): "In 1842, Shishaldin volcano on Unimak Island erupted, at which time lava flowed forth. Flames appeared on the volcano intermittently thereafter."	exclamation.png	ye	50	http://www.avo.alaska.edu/volcanoes/activity.php?volcname=Shishaldin&eruptionid=349&page=basic
1856-07-26		Shishaldin: 1856	From Lander (1996): "1856, July 26. There was a volcanic eruption in Unimak Pass. It is described by Captain Neville, of the whaler Alice Fraser. Crossing Unimak Pass on his ship with six other whalers, he observed an enormous mass of dense black smoke from a volcanic eruption on the adjacent islands. The ships were becalmed, leaving them exposed to the danger of the eruption. After twelve hours, a light breeze enabled the ships to begin moving away in the pitch blackness. Sailing west and ... More information	asterisk_yellow.png	ye	50	http://www.avo.alaska.edu/volcanoes/activity.php?volcname=Shishaldin&eruptionid=550&page=basic
1865-00-00		Shishaldin: 1865	Dall (1870) reported Shishaldin smoking in 1865.	asterisk_yellow.png	ye	50	http://www.avo.alaska.edu/volcanoes/activity.php?volcname=Shishaldin&eruptionid=350&page=basic
1871-00-00	1874-00-00	Shishaldin: 1871 - 1874	Becker (1898) reported steaming at Shishaldin from 1871-1874. However, Sapper (1917) points out that this notation of Becker's is identical to his remarks for Makushin, raising the possibility that this report is erroneous.	asterisk_yellow.png	ye	50	http://www.avo.alaska.edu/volcanoes/activity.php?volcname=Shishaldin&eruptionid=351&page=basic
1880-00-00	1881-00-00	Shishaldin: 1880 - 1881	Becker reported smoke from Shishaldin between 1880-1881. However, Sapper (1917) points out that this notation of Becker's is identical to his remarks for Makushin, raising the possibility that this report is erroneous. Many subsequent compilers list smoke from Shishaldin during 1880-1881.	asterisk_yellow.png	ye	50	http://www.avo.alaska.edu/volcanoes/activity.php?volcname=Shishaldin&eruptionid=352&page=basic
1883-00-00		Shishaldin: 1883	Becker reported steam and ash from Shishaldin in 1883. However, Sapper (1917) points out that this notation of Becker's is identical to his remarks for Makushin, raising the possibility that this report is erroneous.	asterisk_yellow.png	ye	50	http://www.avo.alaska.edu/volcanoes/activity.php?volcname=Shishaldin&eruptionid=353&page=basic
1895-00-00		Shishaldin: 1895	Becker reported steam at Shishaldin in 1895. However, Sapper (1917) points out that this notation of Becker's is identical to his remarks for Makushin, raising the possibility that this report is erroneous.	asterisk_yellow.png	ye	50	http://www.avo.alaska.edu/volcanoes/activity.php?volcname=Shishaldin&eruptionid=354&page=basic
1897-00-00		Shishaldin: 1897	Stanley-Brown (1899) reported that he saw "what appeared to be banners of steam issuing" from Shishaldin.	asterisk_yellow.png	ye	50	http://www.avo.alaska.edu/volcanoes/activity.php?volcname=Shishaldin&eruptionid=355&page=basic
1898-00-00		Shishaldin: 1898	Stanley-Brown (1899) writes "There are two very intelligent and well-to-do traders (Charles Rosenberg and Charles Swanson) who live with their families at Morshovia village, near the base of the mountain [Shishaldin]. While on a trip in their schooner to Dutch Harbor, Unalaska Bay, last summer [1898?] for supplies they told me that the volcano is now in a state of eruption, and that at night they had seen, high on the slopes, tongues of molten lava creeping slowly down the mountain side and branching ... More information	exclamation.png	ye	50	http://www.avo.alaska.edu/volcanoes/activity.php?volcname=Shishaldin&eruptionid=356&page=basic
1899-00-00		Shishaldin: 1899	Coats (1950) reports Shishaldin smoking in 1899.	asterisk_yellow.png	ye	50	http://www.avo.alaska.edu/volcanoes/activity.php?volcname=Shishaldin&eruptionid=357&page=basic
1901-09-00		Shishaldin: 1901	Dunn (1906) reports an eruption from Shishaldin in September, 1901.	asterisk_yellow.png	ye	50	http://www.avo.alaska.edu/volcanoes/activity.php?volcname=Shishaldin&eruptionid=358&page=basic
1910-08-07		Shishaldin: 1910	A newspaper account from August 15, 1910, describes an eruption of Shishaldin: "The steamer Corwin has arrived from Nome [to Seward] with the report that Mount Shishaldin, the highest volcanic peak in the Unimak Islands, is again in eruption. Officers of the Corwin say that when they passed the island a few days ago the volcano was more active than during the former eruption. "A great column of fire shot high into the air and volumes of smoke poured from the crater. The snow which at the ... More information	exclamation.png	ye	50	http://www.avo.alaska.edu/volcanoes/activity.php?volcname=Shishaldin&eruptionid=561&page=basic
1912-00-00		Shishaldin: 1912	Sapper (1917) reported smoke or steam from Shishaldin in 1912.	asterisk_yellow.png	ye	50	http://www.avo.alaska.edu/volcanoes/activity.php?volcname=Shishaldin&eruptionid=359&page=basic
1913-06-05		Shishaldin: 1913	Although initial accounts from the steamship Dora report a volcanic eruption of Shishaldin, with vivid descriptions, the June 11 edition of the Fairbanks Daily Times published a retraction of the accounts, saying "The reports of volcanic activity, which were sent from here [Seward] several days ago and which circulated generally throughout the States, were of a character more sensational than the actual conditions warranted. "It is true that reports of activity were received here from the ... More information	information.png	ye	50	http://www.avo.alaska.edu/volcanoes/activity.php?volcname=Shishaldin&eruptionid=562&page=basic
1914-07-01		Shishaldin: 1914	An Associated Press article of July 10, 1914, gives an account of an eruption at Shishaldin: "Further details of the tremendous volcanic activity in progress along the Alaskan peninsula west of Seward, and reaching to the Aleutian Islands, were given today by Captain McMullen of the steamer Dirigo, which brought first news of the outburst. "Observations made by the crew of the Dirigo July 1 showed that a new crater had opened on the north side of Mount Shishaldin, the most westerly of the ... More information	asterisk_yellow.png	ye	50	http://www.avo.alaska.edu/volcanoes/activity.php?volcname=Shishaldin&eruptionid=560&page=basic
1922-10-00	1923-1-00	Shishaldin: 1922 - 1923	From Finch (1934): In autumn of 1922, the Daly brothers of False Pass reported "glowing material for down the north slope and mud flows bearing blocks of ice in Clinker Creek" at Shishaldin Volcano. An Associated Press article from June 26, 1923, gives additional description of the November 20, 1922 eruption: "The 1922 eruption of Shishaldin was picturesque, according to eyewitnesses. Great flames burst from the crater and the top of the volcano was blown high into the air, about two hundred ... More information	exclamation.png	ye	50	http://www.avo.alaska.edu/volcanoes/activity.php?volcname=Shishaldin&eruptionid=360&page=basic
1925-00-00		Shishaldin: 1925	Coats (1950) reported Shishaldin "active; type of activity unknown" in 1925. An Associated Press article published in the November 14, 1925 edition of the Fairbanks Daily News Miner attributes a warm Alaskan winter to "the eruption of Mount Shishaldin" but gives no details about eruption date or description.	asterisk_yellow.png	ye	50	http://www.avo.alaska.edu/volcanoes/activity.php?volcname=Shishaldin&eruptionid=361&page=basic
1927-11-28	1927-12-8	Shishaldin: 1927	Jaggar (1928): "A notice of December 8 [1927] states that two volcanoes on Unimak had been smoking for ten days, after a season of unusual activity in the Aleutians. The smoke and vapor is stated to be 'in comparatively small quantities.'" One of these volcanoes is probably Shishaldin.	asterisk_yellow.png	ye	50	http://www.avo.alaska.edu/volcanoes/activity.php?volcname=Shishaldin&eruptionid=362&page=basic
1928-05-15		Shishaldin: 1928	An Associated Press article of May 16, 1928 states that Shishaldin was erupting on May 15, 1928: "* * * Captain L.W. Perkins, commanding officer of the coast guard cutter Unalga reported that Shishaldin, volcano on Unimak Island, was in a state of eruption. "The message, which was sent from Dutch Harbor, Alaska, read: 'At one o'clock on the morning of the 15th, the coast guard cutter Unalaga Shishaldin on Unimak Island. At that time the volcano was showing unusual activity, emitting heavy ... More information	asterisk_yellow.png	ye	50	http://www.avo.alaska.edu/volcanoes/activity.php?volcname=Shishaldin&eruptionid=363&page=basic
1929-05-28	1929-6-23	Shishaldin: 1929	From Jaggar (1929): "Shishaldin, the great volcano on Unimak Island, was 'flaming high' on May 28, 1929, and glowing matter was overwelling the edge of the crater and rolling down the slopes. On June 17 Shishaldin was quiet though steam was visible when the crater was inspected with field glasses. It was fiery again June 23 and appeared to have opened three new craters low on the north side. On August 4 the summit steam was barely visible to the naked eye."	exclamation.png	ye	50	http://www.avo.alaska.edu/volcanoes/activity.php?volcname=Shishaldin&eruptionid=364&page=basic
1932-02-01	1932-5-21	Shishaldin: 1932	An Associated Press article of February 5, 1932, reported: "Shishaldin is reported in the most violent and spectacular eruption for many years, with huge quantities of lava pouring down its uninhabited slopes and smoke and ash scattered over the Bering sea by a strong wind. "'The volcano presented a beautiful display of fireworks after dark, day before yesterday [February 3],' a radio message sent out by Joseph Nasenius". From Jaggar (1932): "On February 10, 1932, a radio from John Gardner ... More information	exclamation.png	ye	50	http://www.avo.alaska.edu/volcanoes/activity.php?volcname=Shishaldin&eruptionid=365&page=basic
1935-00-00		Shishaldin: 1935	Edward Weber Allen, in his 1936 book about his 1935 journey to Japan, Siberia, Alaska, and Canada, aboard the Santa Ana, seems to describe possible eruptive activity at Shishaldin - perhaps hot or molten lava within the crater. The text of his account is as follows: "The sky almost cleared and the late sun, setting tardily, silhouetted the volcanic cone of Shishaldin symmetrically. Dark and ominous it loomed. Dense smoke poured forth from its dull-glowing top. Its spell lured us with a mysterious, ... More information	asterisk_yellow.png	ye	50	http://www.avo.alaska.edu/volcanoes/activity.php?volcname=Shishaldin&eruptionid=588&page=basic
1946-08-00	1947-1-00	Shishaldin: 1946 - 1947	Robinson (1948) reported a small steam plume from Shishaldin on June 6, 1946. Coats (1950) reports a minor explosive eruptions at Shishaldin from August - September 1946, December, 1946, and January, 1947. Hantke (1951) reported "ashfall over the Aleutians" in 1946 from Shishaldin. The January 10, 1947 edition of the Sitka Sentinel reports "A second volcanic disturbance in Alaska's Aleutian islands was reported today by the Navy, which said 9387 foot Mount Shishaldin on Unimak Island was erupting ... More information	exclamation.png	ye	50	http://www.avo.alaska.edu/volcanoes/activity.php?volcname=Shishaldin&eruptionid=366&page=basic
1948-00-00		Shishaldin: 1948	Coats (1950) reported a minor explosive eruption at Shishaldin in 1948.	asterisk_yellow.png	ye	50	http://www.avo.alaska.edu/volcanoes/activity.php?volcname=Shishaldin&eruptionid=370&page=basic
1951-04-00	1951-10-00	Shishaldin: 1951	Jones (1952) reported that during April, 1951, "on a moonlit night, glow was reflected high above Shishaldin volcano, the most active vent on Unimak Island." He also reports that during July, 1951, Shishaldin was "throwing fire and glowing" and glowing during September and early October.	exclamation.png	ye	50	http://www.avo.alaska.edu/volcanoes/activity.php?volcname=Shishaldin&eruptionid=372&page=basic
1953-10-03		Shishaldin: 1953	Snyder (1954): "On March 2 [1953] Richard McDonald, U.S. Geological Survey seismologist stationed at Adak, rode a Navy plane from Kodiak to Adak and back. He reported steam rising from Pavlof, Shishaldin, Makushin, and a small cone within Okmok Caldera on this day." Powers (1953; 1958) reports an ash eruption at Shishaldin in October, 1953.	exclamation.png	ye	50	http://www.avo.alaska.edu/volcanoes/activity.php?volcname=Shishaldin&eruptionid=373&page=basic
1954-01-04	1954-10-31	Shishaldin: 1954	Military pilots documented many observations of Shishaldin Volcano during 1954. A summary of their observations follows: Jan. 4: Steam rising from peak crater only, to 100ft above peak, dispersing to N. Several burned-off streaks along slopes but no evidence of recent ash or lava activity. Three small orifices in crater showed fire from close aerial range; Jan. 5: Small light grey smoke rose from peak, dispersing to SE. No visible activity other than this single small column; Jan. 8: Steam or ... More information	exclamation.png	ye	50	http://www.avo.alaska.edu/volcanoes/activity.php?volcname=Shishaldin&eruptionid=374&page=basic
1955-07-01		Shishaldin: 1955	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 ... More information	exclamation.png	ye	50	http://www.avo.alaska.edu/volcanoes/activity.php?volcname=Shishaldin&eruptionid=375&page=basic
1963-12-28	1963-12-31	Shishaldin: 1963	Coats (1964) reported an eruption at Shishaldin, December 28-31, 1963.	exclamation.png	ye	50	http://www.avo.alaska.edu/volcanoes/activity.php?volcname=Shishaldin&eruptionid=376&page=basic
1967-01-28		Shishaldin: 1967	Decker (1967) reports that on January 28, 1967, Shishaldin had an explosive eruption. He writes that "[a]sh charged clouds succeeded by intense steam emission. No lava reported."	exclamation.png	ye	50	http://www.avo.alaska.edu/volcanoes/activity.php?volcname=Shishaldin&eruptionid=377&page=basic
1975-09-16	1975-10-31	Shishaldin: 1975	From Smithsonian Institution (1975): "Shishaldin, during the few times it could be observed from Cold Bay, was seen to be continually active in September and into October. At 2215 on 16 September, NOAA's RV Millard Freeman, at 55.55�N, 163.82�W experienced rainfall that contained ash. This continued for 15 minutes while the ship was headed on course 250� true. The ash eruptions had apparently ceased by the end of October."	exclamation.png	ye	50	http://www.avo.alaska.edu/volcanoes/activity.php?volcname=Shishaldin&eruptionid=378&page=basic
1976-04-06	1977-2-27	Shishaldin: 1976 - 1977	From Shackelford (1978): "From April to November 1976 Shishaldin volcano occasionally displayed weak explosive activity from the summit, with intervals of steaming. Frequent poor weather obscured the volcano, so the following observations are incomplete to an unknown degree. Cited times are local time, except those of August, which are GMT." April 6th, some radial ash sprays on the snow were visible at 16:00; April 27th, at 12:10 there was a faint veil-like ash cloud over the summit. In ... More information	exclamation.png	ye	50	http://www.avo.alaska.edu/volcanoes/activity.php?volcname=Shishaldin&eruptionid=379&page=basic
1978-02-08		Shishaldin: 1978	... More information	exclamation.png	ye	50	http://www.avo.alaska.edu/volcanoes/activity.php?volcname=Shishaldin&eruptionid=381&page=basic
1979-02-14	1979-2-27	Shishaldin: 1979	From Smithsonian Institution (1979): "Peninsula Airways pilots reported unusually strong ash emission during overflights on 14 or 15, and 27 February. Ashfall, usually confined to the summit area, was occurring on the upper half of the volcano."	exclamation.png	ye	50	http://www.avo.alaska.edu/volcanoes/activity.php?volcname=Shishaldin&eruptionid=382&page=basic
1981-09-25		Shishaldin: 1981	From Smithsonian Institution (1981): "Activity accompanied some of the eruption at Pavlof (about 150 km ENE) [see 6:9 Pavlof; Pavlof and Shishaldin are in different time zones]. At 1315 on 25 September, NOAA weather satellite imagery revealed plumes emerging from both Shishaldin and Pavlof (Pavlof was also emitting a plume 4 hours earlier when weather clouds had last allowed a clear view of the area). By 1445, Shishaldin's plume had reached an altitude estimated at 6-7.5 km based on cloud top ... More information	asterisk_yellow.png	ye	50	http://www.avo.alaska.edu/volcanoes/activity.php?volcname=Shishaldin&eruptionid=383&page=basic
1986-03-19	1987-3-00	Shishaldin: 1986 - 1987	From Reeder (1989): "Steam-blast eruptive activity with and without ash occurred intermittently during 19 March 1986 up into 1987." Details of the 1986 eruption are in Reeder, 1989; details of the 1987 eruption are in Reeder, 1990. From Reeder (1989): "At about 1325LT 19 march 1986, James Dickson, a resident of Unlaska, observed, while on a MarkAir Inc. flight from Dutch Harbor to Anchorage, yellow to brown wisp rise about 90 m above the summit crater of Shishaldin Volcano. Previous emissions ... More information	exclamation.png	ye	50	http://www.avo.alaska.edu/volcanoes/activity.php?volcname=Shishaldin&eruptionid=384&page=basic
1993-10-26		Shishaldin: 1993	From Neal and others (1996): "AVO received a flurry of calls on September 4, 27, and October 4, 1993 relaying pilot reports of vigorous steaming and on one occasion (September 4) 'possible ash' to 3 km. This was not confirmed by satellite imagery or ground observations of ashfall. On October 26, an experienced USFWS observer noted ash on the upper 300 m of the cone as well as a gray coloration to the plume emanating from the summit crater. More pilot reports of steaming were received on October ... More information	asterisk_yellow.png	ye	50	http://www.avo.alaska.edu/volcanoes/activity.php?volcname=Shishaldin&eruptionid=385&page=basic
1994-10-04		Shishaldin: 1994	From Neal and others (1995): "Satellite image [of Shishaldin Volcano] shows plume-like cloud on 5-23-94; subsequently confirmed to be meteorological. Possible ash eruption on 10-4-94; pilot report of steam plume 3 km (9,840 ft) above the volcano with minor amounts of ash. "* * * A plume-like image was recognized on an AVHRR satellite image prompting NWS to issue a SIGMET on the night of May 23, 1994. There were no pilot confirmations of any eruption and it is likely that this feature was ... More information	asterisk_yellow.png	ye	50	http://www.avo.alaska.edu/volcanoes/activity.php?volcname=Shishaldin&eruptionid=386&page=basic
1995-12-23	1995-12-24	Shishaldin: 1995	From McGimsey and Neal (1996): "Around 6:30 p.m. AST (0330 UTC) on December 23, 1995, the FAA received a pilot report that Shishaldin had apparently erupted, sending an ash cloud to 35,000 ft ASL with prevailing winds carrying the plume to the north and northwest. AVO analysis of a satellite image taken at 7 pm ASP revealed a possible small ash plume extending about 50 km northwest from the volcano. A resident of Cold Bay, 90 km (56 mi) northeast of Shishaldin, reported that a very light dusting ... More information	exclamation.png	ye	50	http://www.avo.alaska.edu/volcanoes/activity.php?volcname=Shishaldin&eruptionid=387&page=basic
1996-05-16		Shishaldin: 1996	From Neal and McGimsey (1997): "Following the late 1995 eruption (McGimsey and Neal, 1996), AVO staff examined satellite images of Shishaldin on a daily basis and tracked the decay of a hot spot at the summit of the volcano. AVO also reviewed USCG footage of the volcano taken during routine patrol missions; the footage showed no unequivocal signs of eruptive activity but commonly captured a vigorous steam plume emanating from the summit crater. Photographs by AVO personnel on May 16, 1996, however, ... More information	asterisk_yellow.png	ye	50	http://www.avo.alaska.edu/volcanoes/activity.php?volcname=Shishaldin&eruptionid=388&page=basic
1997-06-02		Shishaldin: 1997	From McGimsey and Wallace (1999): "On Monday afternoon, June 2, 1997, a NWS observer in Cold Bay, 96 km (60 mi) northeast of the volcano, viewed through field glasses a steam and ash plume rising about 1,000-1,500 ft (~300-450 m) above the summit vent and drifting 3-4 mi (5-6 km) to the north. At the time, the volcano was not seismically monitored. This eruptive activity appears to be similar to that documented in 1993 (Neal and others, 1996), and 1994 (Neal and others, 1995)."	exclamation.png	ye	50	http://www.avo.alaska.edu/volcanoes/activity.php?volcname=Shishaldin&eruptionid=389&page=basic
1998-11-04		Shishaldin: 1998	From McGimsey and others (2003): "On November 4, 1998, AVO received word from the U.S. Coast Guard (USCG) of a possible ash plume above the summit crater of Shishaldin Volcano. The report reads, 'Ash and smoke extending up to 100 ft above volcano vent; dark in color. Puffs approximately 10 minutes apart.' This type of activity is typical of Shishaldin and probably reflects a continuing high-level heat source and intermittent phreatic explosive activity within the summit crater."	asterisk_yellow.png	ye	50	http://www.avo.alaska.edu/volcanoes/activity.php?volcname=Shishaldin&eruptionid=390&page=basic
1999-02-09	1999-5-28	Shishaldin: 1999	From McGimsey and others (2004): "During the summer of 1998, the volcano became seismically restless. Activity slowly escalated and culminated in a subplinian eruption on April 19, 1999 that placed an ash cloud to 45,000 ft ASL (~13,700 m). The eruption style almost immediately changed to that of vigorous strombolian fountaining (Nye and others, 2002), which characterized the activity for the following six weeks. AVO closely monitored the activity using seismic data, daily imagery from weather ... More information	exclamation.png	ye	50	http://www.avo.alaska.edu/volcanoes/activity.php?volcname=Shishaldin&eruptionid=391&page=basic
1999-09-25	2000-2-4	Shishaldin: 1999 - 2000	From Neal and others (2004): "Following anomalous, post-eruption seismicity of late December 1999, a series of seismic events caused by small explosions were identified on January 15, 2000. No associated plumes or thermal anomalies appeared on satellite images. Re-analysis of seismic data for the previous several months revealed that similar small 'explosion' seismic signals had been occurring intermittently since September 1999, several months after the end of the main phase of the 1999 eruptive ... More information	asterisk_yellow.png	ye	50	http://www.avo.alaska.edu/volcanoes/activity.php?volcname=Shishaldin&eruptionid=392&page=basic
2000-08-11		Shishaldin: 2000	From Smithsonian Institution (2000): "The Alaska Volcano Observatory (AVO) reported on 11 August that recent satellite data indicated a weak thermal anomaly at Shishaldin's summit, although no known seismic activity occurred above background levels in the area. Pilot reports did not disclose any noticeable change in steam emission from the summit crater. Accordingly, the AVO decided to keep the Level of Concern Color Code for Shishaldin at Green. "After 11 August, clear days allowed unobstructed ... More information	asterisk_yellow.png	ye	50	http://www.avo.alaska.edu/volcanoes/activity.php?volcname=Shishaldin&eruptionid=393&page=basic
2001-06-00	2001-11-00	Shishaldin: 2001	Shishaldin Volcano experienced some seismic unrest and a possible steam plume during 2001. McGimsey and others (2004) report: "AVO detected that seismic activity began increasing at Shishaldin Volcano in early June, 2001 and continued through about the end of November, 2001. On April 26, 2001, a pilot reported a steam cloud rising to about 2,000 ft. (~600 m) above the summit. Although the Color Code status of the volcano was never raised above 'GREEN', and the restlessness was not reported in ... More information	information.png	ye	50	http://www.avo.alaska.edu/volcanoes/activity.php?volcname=Shishaldin&eruptionid=523&page=basic
2002-05-15	2002-8-16	Shishaldin: 2002	From Neal and others (2005): "In mid-May 2002, AVO detected an increase in the number of shallow, low-frequency seismic events at Shishaldin. In addition, a number of 2-3 minute-long tremor-like signals were recorded. No correlative thermal anomalies or other observations of unusual activity were reported to AVO. AVO mentioned the activity in its weekly update of May 17. On May 24, AVO reported in its weekly update that the numbers of locatable low-frequency seismic events had decreased to ... More information	information.png	ye	50	http://www.avo.alaska.edu/volcanoes/activity.php?volcname=Shishaldin&eruptionid=530&page=basic
2003-00-00		Shishaldin: 2003	From McGimsey and others (2005): "The AAWU [Alaska Aviation Weather Unit] called AVO on January 31, 2003 to relay an 11:00 AST (2000 UTC) PIREP from the Cold Bay Flight Service Station of a steam plume from Shishaldin with tops to 16,000 ft (4,875 m) ASL and moving to the north. The pilot reported no sulfur smell. AVO staff checked the seismic data for Shishaldin and found no change at the time of the PIREP. Another PIREP was reported to AVO on the morning of September 12, 2003 concerning a steam ... More information	information.png	ye	50	http://www.avo.alaska.edu/volcanoes/activity.php?volcname=Shishaldin&eruptionid=544&page=basic
2004-02-17	2004-5-17	Shishaldin: 2004	From Neal and others (2005): "Since its last eruption in 1999, the background level of seismic activity at this frequently active volcano has remained relatively high and consists of many small, discrete, volcano-tectonic earthquakes, small explosion signals, and short (2-6 min) periods of tremor-like signals. Typically, this activity is interpreted to reflect either hydrothermal or magmatic processes occurring high in the conduit and deep in the summit crater of Shishaldin (Caplan-Auerbach and ... More information	exclamation.png	ye	50	http://www.avo.alaska.edu/volcanoes/activity.php?volcname=Shishaldin&eruptionid=531&page=basic
2005-12-22	2005-12-22	Shishaldin: 2005	From McGimsey and others (2007): "Following more than a year of relative quiescence, on December 22, 2005, a pilot reported a steam plume rising 3,000 ft above the summit of Shishaldin. The FAA issued an Urgent Pilot Report. Commensurate with this report, a few small explosions were recorded on the pressure sensor located on the north flank. AVO seismologists also noted that the amplitudes of seismic events had increased since about mid-November. Because no ash apparently was released and ... More information	information.png	ye	50	http://www.avo.alaska.edu/volcanoes/activity.php?volcname=Shishaldin&eruptionid=596&page=basic
2008-1-8		Shishaldin: 2008	From Neal and others (2011): "AVO received a number of calls during 2008 regarding possible steam and ash emissions from Shishaldin. The first caller on January 8 reported a plume rising just a few thousand feet above the summit. On February 11, AVO received word from the National Weather Service of several pilot reports of a plume containing ash to an estimated 15,000 ft (4,600 m) ASL and extending south for about 25 mi (40 km). A check of seismicity showed nothing unusual that would reflect an ... More information	asterisk_yellow.png	ye	50	http://www.avo.alaska.edu/volcanoes/activity.php?volcname=Shishaldin&eruptionid=662&page=basic
2008-6-3	2008-8-3	Shishaldin: 2008	From Neal and others (2011): "On June 3, AVO received a pilot report of a steam plume rising about 2,000 ft (610 m) above the summit. On July 27, AVO was contacted by a mariner from the fishing vessel Castle Cape who reported Shishaldin 'puffing' on July 26 between about 8 p.m. and 12 a.m. local time. He described ash falling from the dissipating puffs. For all of these reports, there were no unequivocal correlative changes in seismicity, nor did any ash signal or thermal anomaly appear in satellite ... More information	asterisk_yellow.png	ye	50	http://www.avo.alaska.edu/volcanoes/activity.php?volcname=Shishaldin&eruptionid=672&page=basic