Manava Dharmashastra 4.103

4.103

vidyutstanitavarṣeṣu maholkānāṃ ca saṃplave
ākālikam anadhyāyam eteṣu manur abravīt //

Manu has stated, that when lightning, thunder, and rain (are observed together), or when large fiery meteors fall on all sides, the recitation must be interrupted until the same hour (on the next day, counting from the occurrence of the event).