HIGH-ALTITUDE CLOUDS FORM MORE THAN 6,000 METERS ABOVE THE GROUND.

CIRRUS CLOUDS ARE THIN, WISPY, AND WHITE.

THE BASES OF THESE CLOUDS MAYBE AS LOW AS 1,000M.

THEY ARE OFTEN CALLED THUNDERHEADS BECAUSE THEY OFTEN CAUSE THUNDERSTORMS.

THE BASES OF MID ALTITUDE CLOUDS ARE BETWEEN 2,000M AND 7,000M ABOVE THE GROUND.

STRATUS CLOUDS LOOK LIKE SMALL PUFFY BALLS.

IT IS CLOUD AT GROUND LEVEL.

ONE KIND OF FOG CAN FORM ON CLEAR, COOL NIGHTS WITH NO WIND.