Tōhoku Earthquake & Tsunami (2011)

March 11, 2011. A massive undersea quake, a tsunami that erased coastal assumptions, and cascade effects that included the Fukushima Daiichi nuclear crisis. It is the modern reminder that the earthquake is chapter one.

Memorable scale: magnitude that rewrote local maps, evacuation stories measured against wave arrival times, and years of recovery politics afterward. For households elsewhere, the transferable lesson is multi-hazard thinking—aftershocks, flood, power, information.

Drill drop-cover-hold, but also plan for the week after: water, medical, reunification, offline guides when networks congest.

Watchtower Earthquake hub + Wiki medical + Checklist are the portable version of that lesson.

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Web briefings are short original summaries for discovery—not official after-action reports. Watchtower Survival Pro provides preparedness tools and information; it is not a government service or emergency dispatcher. Always follow official evacuation orders and local emergency management guidance.