The U.S.’s strongest tornado in 12 years hit North Dakota in June, National Weather Service says
A deadly tornado that ripped through a rural city in North Dakota in June has been upgraded to an EF-5, the National Weather Service said Monday, marking the first U.S. twister with an EF-5 rating in 12 years. The federal agency’s Grand Forks, North Dakota, facility estimates the twister that touched down in the southeast…