Volcanic eruption
See 1921 on the mapUncertain eruption of St. Helens
18 Mar 1921 · 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
- 18 Mar 1921
- Kind
- Volcanic eruption
- Coordinates
- 46.20° N, 122.18° W
- Uncertain
- yes
- Volcano number
- 321050
- Eruption number
- 20556
Nearby in time and place
- Portland Waterfront Strike, 19221922 · Strike
- 1922 Astoria, Oregon fire8 Dec 1922 · Fire
- Centralia Tragedy11 Nov 1919 · Massacre · Deaths 7
- Seattle General Strike6 Feb 1919 · Strike
- Lava Lake murders1924 · Murder
- 1918 Vancouver general strike2 Aug 1918 · Strike
- Everett Massacre5 Nov 1916 · Shooting · Killed 7
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