火雷 ひがみなり Also written ひかみなり, 日雷, 火神鳴り, 火神鳴 Meanings Noun thunder on a clear day (esp. 日雷) lightning that starts a fire (esp. 火雷, 火神鳴り) See also: 水雷 (みずがみなり). Kanji 火 fire. Read as ひ. 雷 thunder. Read as かみなり. Jinuma: Japanese Dictionary · Word lists