Rain an occluded front, with thunderstorms possible, but usually their passage is associated with a drying of the air mass. Occluded fronts usually form around mature low-pressure areas. What separates rainfall from other precipitation types, such as ice pellets and snow, is the presence of a thick layer of air aloft which is above the melting point of water, which melts the frozen precipitation well before it reaches the ground. If there is a shallow near surface layer that is below freezing, freezing rain (rain which freezes on contact with surfaces in subfreezing environments) will result. Hail becomes an increasingly infrequent
David Sleet David Sleet David A. Sleet is an American scientist recognized for championing the application of behavioral science to unintentional injury prevention and helping to establish injury prevention as a global public health concern. He has published hundreds of articles and book chapters and was co-editor of the Handbook of Injury and Violence Prevention.; Injury and Violence Prevention: Behavioral Science Theories; Derryberry’s Educating for Health; and the international prize-winning World Report on Road Traffic Injury Prevention. In 2016, Dr. Sleet retired from the Centers for Disease Control and Prevention (CDC) in Atlanta, Georgia where he served as the Associate Director for