The Texas Division of Emergency Management has activated approximately 700 service members of the Texas Army Guard, Texas Air National Guard and Texas State Guard ahead of Hurricane Harvey’s landfall. The hurricane is expected to strengthen into a category 3 storm, meaning it could cause 111-129 mph sustained winds, according to the National Hurricane Center.

"Currently, UH-60 Blackhawk and UH-72 Lakota air crews remain prepositioned and on standby in Austin and San Antonio to assist with any emergency search and rescue, swift water rescues and/or emergency evacuations," the Texas Military Department said in a statement.

"In addition, multiple Texas Army National ground transportation teams have been activated to support local and state agencies with any request for swift water rescues, high water ground transportation and personnel evacuation needs. They remain prepositioned in Victoria and College Station with other locations expected as the storm track becomes clearer. Members of the Texas State Guard are mobilized to provide any local shelter operations and Electronic Tracking Network assistance in the affected counties."

Harvey is projected to make landfall on the central Texas Gulf Coast late Friday or early Saturday. The storm will be the first hurricane since 2008 to make landfall in Texas.