COLUMBIA, S.C. — Shelters are opening in South Carolina after a mandatory evacuation of the coast is sending thousands inland. 

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South Carolina Gov. Henry McMaster issued mandatory evacuations for people living along the entire coastline of South Carolina, as Hurricane Dorian is expected to affect the state by midweek. 

RELATED: Hurricane Dorian weakens to Category 2, new watches issued in South Carolina

Along with the evacuations came lane reversals for Interstate 26. 

A  tropical storm watch is in effect for three Midlands counties in advance of Hurricane Dorian. Meanwhile, the storm has weakened again back down to a Category 2 hurricane. 

RELATED: LIVE: South Carolina governor to give update on Hurricane Dorian preparations

Dorian is expected to move just off the state's coastline late Wednesday and Thursday, but the effects in most of the Midlands is not expected to be severe. 

In anticipation of Hurricane Dorian, shelters have started to open in the state. 

RELATED: Mandatory evacuations ordered for entire South Carolina coastline, lane reversals for I-26

In Clarendon County, shelters will begin to open Wednesday. The shelters will be at Manning High School, Old Scott’s Branch High School (Resource Center) and East Clarendon High School. 

In Orangeburg County, shelters will open Wednesday at 1:30 pm. The shelters will be at Lake Marion High School and Technology Center in Santee and Orangeburg-Wilkinson High School in Orangeburg.

For other shelter locations, check SCEMD's website here. 

RELATED: From Midlands to coast, classes cancelled for Hurricane Dorian