The National Weather Service said Friday that the April 5 tornado that damaged Bryan County was an EF4, reaching wind speeds of up to 185 mph. 

The NWS in Charleston, S.C., earlier estimated the storm, which touched down in Pembroke around 5:18.p.m. and ended in Blitchton, was either a high EF3 or low EF4.

In its revised public information statement, the NWS said the tornado's path was 12.991 miles and 1,300 yards wide. 

One person was killed and 12 people were hurt.

Here's the updated summary from the NWS:

Survey Summary: A strong tornado began just west of the Bryan County Courthouse in Pembroke, where it damage part of the roof, blew out some windows, and snapped numerous trees. The tornado moved northeastward across a wooded, marshy area, including C C, Stubbs Farms and Stubbs Roads. In this area it produced massive tree damage, and heavily damaged a residence on Stubbs Farm Road. The tornado then continued east-northeast moving through Hendrix Park, Park Place subdivision, and Black Creek Golf Course, where it reached it maximum EF4 intensity of 185 mph, and width of approximately 3/4 of a mile. Across this area the violent tornado extensively damaged most of the homes, structures and trees. Some homes and structures were completely destroyed. Several injuries, some serious, occurred in this area as well. The tornado continued east-northeast over wooded and marshy areas, across Olive Branch Road and then across the southern end of Homestead Drive. Several mobile homes were completely destroyed, and one fatality and additional injuries occurred in this area. The tornado began to weaken as it moved toward the interchange of I-16 and U.S. Highway 280. In this area there was some minor roof damage to a large industrial building off of Oracal Parkway Circle, as well as some snapping and uprooting of trees. The tornado finally dissipated in a marshy region just east of Oracal Parkway Circle. && EF Scale: The Enhanced Fujita Scale classifies tornadoes into the following categories: EF0...Weak......65 to 85 mph EF1...Weak......86 to 110 mph EF2...Strong....111 to 135 mph EF3...Strong....136 to 165 mph EF4...Violent...166 to 200 mph EF5...Violent...>200 mph NOTE: The information in this statement is preliminary and subject to change pending final review of the event and publication in NWS Storm Data.