A major disaster causing extensive damage; e.g., a large earthquake, massive flood, tsunami, or large-scale accident.
昨年の台風は各地で大災害をもたらした。
Last year's typhoon caused major disasters across many areas.
大災害に備えて避難経路を確認しておこう。
Let's check evacuation routes in preparation for a major disaster.
国際援助隊が大災害の被災地へ派遣された。
International aid teams were dispatched to the areas affected by the major disaster.