火か山ざん雷らいかざんらいMeanings1nounvolcanic thunderstormA thunderstorm that occurs in the eruption column of a volcano, often producing lightning.桜さくら島じまの噴ふん火かで火か山ざん雷らいが観かん測そくされた。Volcanic lightning was observed during the eruption of Sakurajima.
