Thunderstorm Thunderstorm A thunderstorm, also known as an electrical storm, lightning storm, or thundershower, is a storm characterized by the presence of lightning and its acoustic effect on the Earth's atmosphere, known as thunder. Thunderstorms occur in a type of cloud known as a cumulonimbus. They are usually accompanied by strong winds, heavy rain, and sometimes snow, sleet, hail, or, in contrast, no precipitation at all. Thunderstorms may line up in a series or become a rainband, known as a squall line. Strong or severe thunderstorms include some of the most dangerous weather phenomena, including large hail, strong winds, and tornadoes.
David Sleet lower the legal blood alcohol content (BAC) limit to 0.08 percent for drivers in the United States. This recommendation helped inform the U.S. Congress which mandated states adopt the stricter BAC limit of 0.08 percent by October 2003 or risk losing a portion of their highway funding. By 2004 all 50 states had passed 0.08 percent laws for drivers, making it the new national standard. Dr. Sleet has received numerous public health awards including the following: He has served on the following editorial boards: David Sleet David A. Sleet is an American scientist recognized for championing the application of behavioral