Path length: 19 miles

Width:  200 yards

Fatalities:  0

Injuries:  0

Rating:  F4

County:  Linn, Jones, Delaware, Dubuque

Tornado Path

Click Map To Enlarge

SPC coordinates:  Start: 42.23 / -91.42   End:  42.40 / -91.12     

Note:  Exact tornado path may not be straight and/or continuous.


Per the SPC Database, 14 tornadoes occurred on March 13, 1990, in the state of Iowa.  The strongest, an F4, traveled 19 miles from Prairieburg in Linn County to Worthington in Dubuque County.  It was on the ground for 30 minutes.  The maximum width was 200 yards. There were no injuries or fatalities.

Per Storm Data, the hardest-hit area was Worthington.  26 homes and businesses were damaged, and 13 were destroyed.  The tornado was approximately 1/2 mile wide as it approached Worthington.  The width was down to about 2 blocks in town.  South of Hopkinton, two farmhouses, were destroyed along with several vehicles.  Over $1 million damage to a farm in Castle Grove Township.  Four other rural homes were destroyed.

Newspaper Clippings


The Storm Prediction Center

NCDC Storm Events Database

March 1990 Storm Data Publication

Grazulis, Thomas P. (1993). Significant Tornadoes 1680-1991: A Chronology and Analysis of Events. St. Johnsbury, VT: The Tornado Project of Environmental Films. Page 1292.

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