Fresh Twist on When, Where, Why Tornadoes Strike

[TazzyD]

http://www.livescience.com/forcesofnatu ... dwest.html


Maybe not a new twist for all the weather watchers on this board, I don't know, but thought I'd post it anyway.

As usual, if this article has already been posted accept my apologies.

[isobar]

Thanks for posting, Tazzy.
This is an interesting blurp. I thought tornadoes in linear storms were more rare than that.

The conventional wisdom is that the tornado threat goes down when the cells merge into 100-mile-long line storms. But Trapp’s team found this to be wrong, especially beyond the Alley. For example, about half of Indiana’s 20 tornadoes a year come from line storms.

Nationwide, 79 percent of tornadoes arise out of cells, whereas 18 percent form from line storms, according to the study, which was supported by the National Science Foundation and reported in the February issue of the journal Weather and Forecasting.