SKYWARN is a national network of volunteer severe weather spotters. There are currently over 230,000 trained SKYWARN spotters in the U.S. These dedicated citizens come from all walks of life and help keep their local communities safe by conveying severe weather reports to NOAA’s National Weather Service (NWS). They are trained by local NWS meteorologists on how to safely observe severe thunderstorms, tornadoes, hail, flooding, heavy snow, and ice accumulation. Where appropriate, training is received on other hazardous phenomena such as volcanic ashfall, waterspouts, rip currents, mudslides, and even earthquakes.