A hot east wind blows across Egypt and Israel during the months of May and October and fills the air with a yellow haze of dust. It often lasts three days or more.
Today this is called hamsin ( hahm- seen). This wind is mentioned in the Bible as a symbol of God’s wrath.
(Lash, Neil & Jamie., “Jewels From the Journey,” Jewish Jewels, Ft. Lauderdale, FL., pg 5)