Sentences with phrase «number of tornadoes during»

Last spring a research team led by Michael Tippett, associate professor of applied physics and applied mathematics at Columbia Engineering, published a study showing that the average number of tornadoes during outbreaks — large - scale weather events that can last one to three days and span huge regions — has risen since 1954.

Not exact matches

And new research shows tornado outbreaks are getting more dangerous: More tornadoes are hitting during each round, even though the overall annual number of American twisters hasn't changed.

This marked the fourth most active May in terms of the number of tornadoes, with more observed during May of 2008, 2004, and 2003.

The number of tornado - related fatalities during 2015 was remarkably low prior to the late - December outbreak.

That was the lowest number of such tornadoes during any 12 - month period since record - keeping began in 1954 — well below the previous low of 247 recorded between July 1990 and June 1991.

He also noted in a blog post that the number of people killed by tornadoes during the past year — 7 — was the lowest since 1899.

Tornado Alley is most famous for the number of storms that roll through during tornado season but in actuality, a tornado can happen anywhere.