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Hailstorms

Online 20.2: Hail Probablilities

Probability of Significant Hail (Diameter 2 in. or Larger):
An animation of the percent probability of having hail 2 inches or larger in diameter within 25 miles of a point on a particular day shows that the most significant hail occurs in the southern Plains early in the thunderstorm season and migrates northward to the Central and Northern Plains later in spring and summer.

Department of Atmospheric Sciences Severe and Hazardous Weather at Department of Atmospheric Sciences University of Illinois