Friday, August 3, 2012

A Stormy Weekend Coming Up

Keeping in mind the definition of a "severe" thunderstorm is one with hail an inch in diameter or larger and/or winds of 58 mph or higher, much of the eastern half of the nation will be at risk at one time or another from this afternoon through Sunday night.

Let's break it down...

For this afternoon and tonight:
The threshold for what I consider to be a significant threat is 15%. There is a tornado risk in the hatched area along with a threat of hail 2" in diameter or larger. The tornado risk extends as far north as Grand Forks.

For Saturday:

For Sunday:

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