Isaias is the Spanish and Portuguese form of Isaiah, the Hebrew name meaning "Yahweh is salvation" or "God saves", borne by the great prophet of the Old Testament. Hurricane Isaias, which struck the East Coast in 2020, briefly put the spelling in every American headline. Isaias has been in the US top 1000 all century, rising from the 500s to number 426 in 2025, its best rank yet.