Rashi on Exodus 14:21/רש"י על שמות י״ד:כ״א

1ברוח קדים עזה BY A POWERFUL EAST WIND — i. e. by the east wind which is the most powerful of the winds. This is the wind by which the Holy One, blessed be He, exacts punishment from the wicked, as it is said, (Jeremiah 18:17) “I will scatter them as with an east wind”; (Hosea 13:15) “An east wind shall come, the wind of the Lord”; (Ezekiel 27:26) “The east wind hath broken thee in the heart of the sea”; (Isaiah 27:8) “He hath removed her with His rough blast in the day of the east wind” (cf. Mekhilta).

2ויבקעו המים AND THE WATERS WERE DIVIDED — all the waters in the world (Mekhilta).