for a storm to occur at sea; literally, for a storm to come upon us (see Molina)
Orthographic Variants:
eecatltopammoquetza
Alonso de Molina:
eecatltopammoquetza. (Pret. eecatl topan omoquetz.) padecer tormenta enla mar. Alonso de Molina, Vocabulario en lengua castellana y mexicana y mexicana y castellana, 1571, part 2, Nahuatl to Spanish, f. 28r. col. 2. Thanks to Joe Campbell for providing the transcription.