Episode 3 of 3

Climactic eruption of 4 August 1783

When
4 August 1783
Where
Mount Asama, central Honshū, Japan
Part of
Mount Asama Eruption

On 4 August 1783 the eruption climaxed in a 15-hour phase of pumice falls and pyroclastic flows, causing widespread damage.

The climactic eruption began on 4 August 1783 and lasted for 15 hours, containing pumice falls and pyroclastic flows. Mount Asama's 1783 (Tenmei 3) eruption caused widespread damage. The event occurred during the Edo period, when Japan was ruled by the Tokugawa shogunate and some 300 regional daimyo.

Sources

  1. Mount Asama Wikipedia, revision of 2026-08-15
  2. Edo period Wikipedia

Machine-drafted from the cited Wikipedia passages and checked by a reviewing model, not by a human editor. Every passage cites the revision it was written from; dates and places follow those passages.