A weather phenomenon is an event that occurs in the atmosphere, such as a STORM, LIGHTNING, or El Nino. Lanina is a type of thunderstorm characterized by strong winds and heavy rain. LIGHTNING is a sudden electrical discharge that occurs during a thunderstorm. Storms are large-scale atmospheric disturbances that can cause strong winds, heavy rain, and sometimes hail. El Nino is a climate pattern that occurs when the surface temperature of the Pacific Ocean rises above normal levels. The Eye of the STORM is the area of calm at the center of a hurricane or other intense STORM.