It’s a below-average year for tornadoes in Iowa.
They can strike during any month, but the peak time for twisters is usually May and June.
Kevin Skow , a meteorologist with the National Weather Service in Des Moines, says Iowans should not let their guard down as dark clouds could still spawn a cyclone.
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Of the 33 tornadoes confirmed in Iowa this year, 24 of them were rated in the weakest category of E-F-zero.
Seven were E-F-ones and only two got big enough to rank as E-F-twos. There have been no E-F-threes, fours or fives.
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The most recent tornado was last Thursday in Council Bluffs.
That twister was a “rope” tornado waterspout that churned up Lake Manawa.
Something else unusual was there were two days where five tornadoes were reported the same day.
April 27th saw five twisters in southwestern Iowa and July 17th brought five more in eastern Iowa.