嵐 is one of the most commonly used Japanese kanji, and it also has a lot of special readings in addition to the standard onyomi and kunyomi readings.
ONYOMI 音読み
あらし arashi
KUNYOMI 訓読み
ラン ran
Examples
この風は嵐の印だ。This wind is a sign of a storm.嵐はやんだようだ。It appears the storm has calmed down.嵐のあとは静かだった。After the storm, it was calm.彼は嵐のため欠席した。His absence was due to the storm.大きな木が嵐で倒れた。A big tree fell in the storm.それはすごい嵐だった。That was some storm.この冬は嵐が多かった。We’ve had a lot of storms this winter.彼が死んだ夜は嵐だった。The evening he died was stormy.嵐はいつまで続くのだろうか。How long will the storm last?嵐のため彼らは遅れて着いた。Owing to the storm, they arrived late.