And Moses stretched forth his rod over the land of Egypt, and the LORD brought an east wind upon the land all that day, and all that night; and when it was morning, the east wind brought the locusts.
All Commentaries on Exodus 10:13 Go To Exodus 10
George Leo Haydock
AD 1849
Wind from "the south "(Septuagint) or "east "(Kadim) or perhaps blowing from the south-east. (Bonfrere) The locusts would come from Ethiopia, or from Arabia, in both which countries they abound. (Ludolf) They lay their eggs in autumn, and hatch in spring. Frequently they devastate one country after another. They are very large in the East, and sometimes will fasten upon the heads of serpents, and destroy them, as they did on this occasion the Egyptians, Wisdom xvi. 9.
In Cyrene, bordering upon Egypt, it is requisite to encounter these creatures thrice in the year. (Calmet) (See Leviticus xi. 22.)