Deadly Greenfield Tornado Upgraded to EF4

DES MOINES, Iowa -- The strength of the tornado that went through Greenfield--in Southwest Iowa's Adair County--this week is being upgraded.

The National Weather Service is now calling the tornado an EF4, packing peak winds of between 175 and 185 miles-per-hour.

They also say the tornado was a thousand yards wide, and covered 44 miles in about 45 minutes.

The tornado killed four people in Greenfield and injured 35 more.

A storm chaser in Adams County was killed when the tornado pulled her our of her car.


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