To the untrained eye the picture on the screen simply took on the appearance of a few innocent clouds drifting over an azure blue sea. Heidi saw a view more menacing. She compared the image with one taken only two hours earlier. The mass of cumulus clouds had increased in bulk more rapidly than any spawning storm she could remember in her eighteen years monitoring and forecasting tropical hurricanes in the Atlantic Ocean with the National Underwater and Marine Agency Hurricane Center. She began enlarging the two images of the infant storm formation.