どか灰ばい

noun

heavy downpour of volcanic ash

Refers to a sudden, intense fall of volcanic ash over a short period, often associated with explosive eruptions. Used in news and disaster contexts.

• 噴ふん火かの後あと、どか灰ばいが街まちを覆おおった。

  After the eruption, a heavy downpour of volcanic ash covered the town.

• 気き象しょう庁ちょうはどか灰ばいに注ちゅう意いするよう呼よびかけた。

  The meteorological agency urged caution regarding the heavy ashfall.