Coastal areas are getting ready for Harvey's impact.
For most areas prolonged rainfall will lead to flooding but along the coast Brittany Viegas with the Galveston County Office of Emergency Management says the concern is the tide and storm surge.
"As of 8 a.m. today, County Judge Mark Henry has called for a voluntary evacuation of Bolivar Peninsula. Now this is mainly for those with medical and functional needs."
Fort Bend County is also pre-positioning rapid response equipment in areas that are known to flood.
"That's parts of Highway 59, Highway 90 at Highway 99, and then parts of the tollway. But to tell you the truth, if we get what they're predicting - maybe seven-or-eight inches at a time - a lot of just local street flooding."
Alan Spears with Fort Bend Office of Emergency Management says once the rain starts stay indoors if you can; don't recklessly endanger emergency responders.
If peak storm surge hits during high tide, parts of the coast could see 2 to 8 feet of flooding, with the potential of 6 to 12 feet between Padre Island National Seashore and Sargent. High tide in Galveston Saturday morning is at 7:55 and 9:37 pm.