The National Weather Service has finished its survey of the deadly tornado that ripped through southeastern Kentucky last week.

The National Weather Service has released that the deadly tornado that impacted parts of Pulaski and Laurel counties over the weekend in Kentucky was an EF-4 tornado and was nearly a mile wide.

The National Weather Service has confirmed that a powerful EF-4 tornado tore through southern Kentucky on Friday night, devastating communities across multiple counties.

Meteorologists with the NWS Paducah office have also confirmed several tornadoes in its region the afternoon and evening of May 16. Three tornadoes impacted western Kentucky, including an EF-3 tornado in Morganfield with winds of 155 mph, an EF-2 tornado in Allegre and an EF-2 tornado in Casky.

The NWS in Jackson, KY, said the track for the tornado in Russell, Pulaski and Laurel Counties was 55.6 miles long with a maximum width of 1700 yards, which is almost one mile.

The weather service predicts two waves of storm systems Tuesday, with the second having the potential for significant impact across KY.

A National Weather Service official said it was the deadliest tornado to ever come through the Jackson office's warning area.

In an update Tuesday afternoon, officials said the tornado that traveled between Pulaski and Laurel counties was an EF-4 with peak winds of 170 mph. It was on the ground for more than 55 miles and was nearly a mile wide at its maximum width.

Kentucky firefighter Leslie Leatherman answered the call for help when a late-night tornado plowed through his Laurel County community