Authors

Anthony Lyza

Document Type

Poster Presentation

Symposium Date

4-20-2011

Abstract

Tornadoes are among the most widely-feared elements of weather. The central Midwest, a region that, for the purposes of this study, encompasses eastern Iowa, southern Wisconsin, northern and central Illinois, northern and central Indiana, southern Michigan, and northwestern Ohio, is notorious for some of the worst tornado events in recorded history. The purposes of this study are manyfold. The goals are to establish a violent (F4/EF4-F5/EF5) tornado and wintertime tornado climatology for the central Midwest, to search for previously hypothesized patterns in major tornado occurrences, and to determine whether there are links between climate variables and incidences of violent and wintertime tornado occurrences. It has been hypothesized that certain climate indices affect the probability of wintertime tornado occurrences. Data collected on significant tornado occurrences since 1880 by Grazulis (1993) and climate data from the National Oceanic and Atmosphere Administration (NOAA) will be used as the basis of this project. The data from this study establishes the relationships between some of the climate variables and violent and wintertime tornado activity.

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