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

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

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.

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

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.

As Kentucky braces for the possibility of more severe weather Tuesday night, the National Weather Service says the tornado that hit Pulaski and Laurel counties late Friday was an EF-4, with winds of 170 miles per hour.

The tornado that struck in Pulaski County Friday night — and into the early morning hours continuing through neighboring Laurel County — has been officially determined to have been an EF-4. The rating was assigned to the tornado according to the National Weather Service Office in Jackson,

Southeastern Kentucky communities are mourning the losses of loved ones who were killed as tornadoes and heavy storms rushed through the region May 16.

Police requested the curfew, which applies to people who aren’t residents of the community or helping with storm recovery.