Volcanic eruption
See 1989 on the mapEruption of St. Helens
7 Dec 1989 – 6 Jan 1990 · 46.20° N, 122.18° W
Mount St. Helens is an active stratovolcano located in Skamania County, Washington, in the Pacific Northwest region of the United States. It lies 52 miles (83 km) northeast of Portland, Oregon, and 98 miles (158 km) south of Seattle.
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What the records say
- When
- 7 Dec 1989 – 6 Jan 1990
- Kind
- Volcanic eruption
- Coordinates
- 46.20° N, 122.18° W
- Vei
- 2
- Vent
- North side of lava dome
- Dated by
- Observations: Reported
- Volcano number
- 321050
- Eruption number
- 20558
Nearby in time and place
- Ash Street shootout23 Sep 1989 · Shooting
- murder of Mulugeta Seraw13 Nov 1988 · Murder · Killed 1
- Horizon Air Flight 265815 Apr 1988 · Air disaster
- United Express Flight 241526 Dec 1989 · Air disaster
- murder of Jay Cook and Tanya van Cuylenborg1987 · Murder
- murders of Hattie Mae Cohens and Brian Mock26 Sep 1992 · Murder · Killed 2
- Spanaway Junior High School shooting26 Nov 1985 · Shooting · Killed 3
- Earthquake — Washington-Oregon Border25 Mar 1993 · Earthquake · Magnitude 5.6
The source
- Smithsonian GVP Volcanoes of the World: Holocene eruptionsGlobal Volcanism Program, Smithsonian InstitutionSmithsonian terms of use: personal, educational and non-commercial use, with creditGlobal Volcanism Program, Smithsonian Institution: Volcanoes of the World v5.3, https://doi.org/10.5479/si.GVP.VOTW5-2025.5.3Source page