for a storm to end, or for the weather to moderate (see Molina)
Alonso de Molina:
otlamattimoman. cessar la tempestad, o sosegar se el tiempo. Alonso de Molina, Vocabulario en lengua castellana y mexicana y mexicana y castellana, 1571, part 2, Nahuatl to Spanish, f. 78r. col. 1. Thanks to Joe Campbell for providing the transcription.