No, no eruptions during your lifetime.
No, the lastest volcanic activity which were referred to as "vigorous" steam explosions occured in May of 1917.
May 22nd, 1915 was the eruption
It hasn't erupted in a century
No
Agree with Bernie however USGS.gov can tell you if theres been smaller, less significant shakes within the past 30 years.
The last time Mt. Lassen erupted was 1917.
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