Climatology

Subcategories:
  • No categories
Clear

Entry Category: Climatology - Starting with T

Tornado Outbreak of 1952

The tornado season of 1952 was a particularly eventful one throughout the state. Twenty-six tornadoes were reported to have touched down in Arkansas from January to November that year. While twenty-six is well below the modern average of about thirty-nine tornadoes per year in Arkansas, an unusually large number of these storms in 1952 were EF-3 and stronger on the Enhanced Fujita Scale used to rate the strength of tornadoes (the ratings go from EF-0 to EF-5). Of the twenty-six tornadoes in this outbreak, at least five were rated EF-4. Among these tornadoes, the most deadly and most widely reported was the March 21, 1952, EF-4 tornado that struck White County on March 21. Over the course of the year, …

Tornado Outbreak of March 1, 1997

The tornado outbreak of March 1, 1997, was one of the deadliest in the history of the state of Arkansas. Sixteen tornadoes tracked across the state, killing twenty-five Arkansans. Several of the tornadoes had unusually long tracks, traveling between fifty and seventy-five miles. There was also a higher than statistically expected number of tornadoes of F3 strength or higher—that is, tornadoes with wind speeds in excess of 158 miles per hour. Of the sixteen tornadoes, four were responsible for all fatalities in the state, as well as much of the property damage. All sixteen tornadoes were produced by four supercell thunderstorms, with the four killer tornadoes being spawned from two such storms that formed ahead of a cold front. The …

Tornadoes

Tornadoes—destructive, violently spinning vortices of air extending from high within severe thunderstorms to the surface of the earth—are more common in the United States than anywhere else on the planet. They are particularly prevalent in the area known as “Tornado Alley,” where the proper ingredients come together: a combination of warm, moist air from the Gulf of Mexico pulled northward by storm systems dragging strong continental cold air from Canada. While Arkansas is not normally included on maps of the infamous Tornado Alley, which is usually considered to stretch from north Texas northward through Oklahoma, Kansas, and Nebraska, the state has suffered many devastating tornado outbreaks. In January 1999, Arkansas recorded the most tornadoes on any individual January day in …

Tropical Cyclones

aka: Tropical Storms and Depressions
As defined by the National Hurricane Center, a tropical cyclone is a “rotating, organized system of clouds and thunderstorms that originates over tropical or subtropical waters and has a closed low-level circulation.” Types of tropical cyclones are classified in terms of wind speed: A tropical depression is a tropical cyclone with maximum sustained winds of 38 miles per hour (mph) or lower. A tropical storm is a tropical cyclone with maximum sustained winds of 39 to 73 mph. A hurricane is a tropical cyclone with maximum sustained winds of 74 mph or higher. A major hurricane is tropical cyclone with maximum sustained winds of 111 mph or higher. Given the landlocked, central location of the state of Arkansas, it may …