Learn more about thunderstorms here. Hail is one of the most significant thunderstorm hazards to aircraft. The dust storms of Mars vary in size, but can often cover the entire planet. Downdrafts and gust fronts; Rainfall; Thunderstorm electrification The Weather Channel's Dr. Rick Knabb looks at the science behind thunderstorms. Liquids with a pH less than 7 are acidic, and those with a pH greater than 7 are bases.  Children and adults can play on a sled or ride in a sleigh. ➤ There are four types of thunderstorms: single cell, multicell line, multicell cluster, and supercell storms. According to the Bible, a giant storm sent by God flooded the Earth.  Hail is one of Canada's most expensive hazards. Severe weather can be produced by these systems, particularly large hail, damaging winds and flooding, tornadoes are also possible with any embedded supercells.  In areas with a high frequency for cloud-to-ground lightning, like Florida, lightning causes several fatalities per year, most commonly to people working outside. This combination of opposing forces can create winds and result in the formation of storm clouds such as cumulonimbus. Single-cell thunderstorms - are small, brief, weak storms that grow and die within an hour or so. "Clean" or unpolluted rain has a slightly acidic pH of about 5.2, because carbon dioxide and water in the air react together to form carbonic acid, a weak acid (pH 5.6 in distilled water), but unpolluted rain also contains other chemicals. This process utilizes shovels and snowplows, and is often assisted by sprinkling salt or other chloride-based chemicals, which reduce the melting temperature of snow. You may be surprised to learn that lightning is a major cause of storm damage in many areas around the country. What we do: Read more about NSSL's thunderstorm research here. ", "Epidemiology of Tropical Cyclones: The Dynamics of Disaster, Disease, and Development", "P2.13 Florida lightning deaths and injuries 2004–2007", "Effects of Acid Rain – Surface Waters and own Aquatic Animals", United States Environmental Protection Agency, "Giant hail killed more than 200 in Himalayas", "School districts are using up calamity days", "Decision for city schools to stay open prompts calls from irate parents", "Using Snow For Cool, Innovative Solutions", "Hail, Hail, Hail ! As the result of the accidents in the 1970s and 1980s, in 1988 the U.S. Federal Aviation Administration mandated that all commercial aircraft have on-board wind shear detection systems by 1993. Severe Weather 101 Thunderstorm Basics. Aivazovsky left several thousand turbulent canvases in which he increasingly eliminated human figures and historical background to focus on such essential elements as light, sea, and sky. Flash floods driven by quick, violent bursts of rain can flood homes, basements and businesses, causing serious damage to both interiors and exteriors.