Why does the Sea of Azov remain muddy for a long time after a storm?

The Azov Sea is one of the smallest seas in the world, located in the east of Europe and washes the coasts of two countries, Ukraine and Russia. The Azov Sea is classified as a flat sea and belongs to shallow seas, only in the central part its depth barely reaches 13 meters. Therefore, even with slight waves or storms, silt deposits and sand from the bottom rise to the surface, and a sufficient amount of time is needed for the sea to clear up.