Here’s an interesting item on severe thunderstorm classification from the National Weather Service. The criteria for a storm to be considered severe will be tightened beginning in 2010.
By definition, a thunderstorm is called severe if it produces winds in excess of 58mph or large hail (generally penny size or bigger). The change coming will re-classify the hail criteria to 1″ diameter or larger. In other words, hail size will have to be bigger in order to qualify a storm as severe. The end result should be fewer severe thunderstorm warnings.
This is a very positive change, the way I see it. There are too many warnings for weather extremes these days. Over-warning folks, the so-called “cry-wolf” effect, has the unintended affect of desensitizing people to weather alerts.
What do you think?
Posted by Jim Duncan