Single Storm Cloud Behavior (image) University of Copenhagen Share Print E-Mail Caption Warm, humid air rises from the sea surface and a cloud is formed. As it starts raining, some of the rain evaporates, the air is cooled locally under the cloud, and the resulting colder, denser air extends downwards and outwards from the cloud. Credit Søren Granat Usage Restrictions None Share Print E-Mail Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.