| start date | end date | title | description | icon | date limit | importance |
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| 1981-04-11 | | Sanford: 1981 | An Associated Press story carried by both the LA Times and the New York times reported that a huge rockslide on Mt. Sanford on April 11, 1981, had been previously mistaken for a volcanic eruption. The text of the story (Associated Press, 1981) is as follows: "A huge landslide on Mount Sanford was mistaken for a volcanic eruption by nearby residents and airline pilots passing overhead yesterday, a University of Alaska scientist says. The slide on the mountain's sheer south face exposed layers ... More information | information.png | ye | 50 | http://www.avo.alaska.edu/volcanoes/activity.php?volcname=Sanford&eruptionid=516&page=basic | |
| 1993-04-05 | 1993-4-8 | Sanford: 1993 | From Neal and others (1996): "Ground observers in Glennallen reported unusual white cloud formations over Mount Sanford on April 5 and 6, 1993. Another report on April 8, 1993, indicated that the mountain 'was steaming' from low on the east or south side (there were conflicting reports) and the resultant cloud was boiling up the flank to an estimated 5,000 ft (1,524 m) over the top of the peak. This level of apparent activity was more than this observer had noted in 21 years of viewing the volcano. ... More information | information.png | ye | 50 | http://www.avo.alaska.edu/volcanoes/activity.php?volcname=Sanford&eruptionid=575&page=basic | |
| 1994-09-30 | | Sanford: 1994 | From Neal and others (1995): "On September 30, [1994], the National Weather Service (NWS) contacted AVO with a pilot report of a steam plume over Mount Sanford. AVO contacted the local flight service station in Gulkana and discussed the observation. Given the clear weather conditions at the time, the transience of the plume, and the history of large gravity slides at Mount Sanford, it was concluded that the observation was probably related to a large avalanche. No mention of this event was ... More information | information.png | ye | 50 | http://www.avo.alaska.edu/volcanoes/activity.php?volcname=Sanford&eruptionid=577&page=basic | |
| 1997-09-30 | | Sanford: 1997 | From McGimsey and Wallace (1999): "A Copper Center resident reported a large steam cloud rising from the southwest face of Mt. Sanford on September 30, 1997. The cloud persisted throughout the afternoon before dissipating. Based on previous similar activity, AVO staff concluded that the cloud resulted from avalanching or debris fall from the southwest face." | information.png | ye | 50 | http://www.avo.alaska.edu/volcanoes/activity.php?volcname=Sanford&eruptionid=583&page=basic | |