BY ROBERT

THIN, WISPY, OCCUR AT 18,000 FEET

MIDDLE CLOUD, WITH ROLLS IN PATTERNS

Low to middle clous, very thick and dense

Puffy clouds, usually very low

FORMS FROM AIRCRAFT EXHAUST LOOKS LIKE LINES OF CLOUD

MIDDLE CLOUD, LOOKS LIKE A SHEET, CAN SEE THE SUN THROUGH IT

LOW CLOUDS, LOOKS LIKE A LAYER OF CLOUD

LOW, LUMPY LAYERS OF CLOUD

A BIG MASS OF CLOUDS BEFORE A STORM

THE EDGE OF A STORM, LOOKS LIKE A CLOUD SHELF

LOOKS LIKE A BUNCH OF BALLS OF CLOUDS

CLOUDS THAT TOUCH THE GROUND AND CAUSE LESS VISIBILITY

A GAP IN A LAYER OF CLOUDS

LENS-SHAPED CLOUDS

LOOKS LIKE LITTLE BITS OF CLOUDS BROKEN OFF OF LARGER CLOUDS