stormy, boisterous
Latin word, found 12 times in the texts on Socratos.
Ovid, Amores 2.6.44: Vota procelloso per mare rapta Noto?
Ovid, Heroides 2.12: Alba procellosos vela referre Notos.
Seneca the Younger, Medea 411: non rapidus amnis, non procellosum mare
All forms of procellosus