ἐκνεφ-ίας · ekneph-ias — LSJ
a hurricane, caused by clouds meeting and bursting, Alex. 46.5, Arist. Mete. 365a1; νότος ἐ. D.S. 20.88.
ἐ. ὄμβρος rain with sunshine, Hp. ap. Gal. 19.96; ἐ. ἥλιος seen through clouds, Herod.Med. ap. Orib. 10.9.1, cf. Philostr. Gym. 58.
ἐ. πυρετός, perh. fever with sweating, Hp. ap. Gal. l.c.