UPDATE: As of 5:30 p.m. Friday FPL said the number of outages in Palm Beach County dropped to 646 and to 52 in Martin County.
The heavy rain Thursday night and overnight have caused hundreds of power outages.
At noon, In Palm Beach County, more than 3,400 customer are without power. In Martin County, more than 50 homes are without power.
The Florida Department of Health in St. Lucie County will sample the North Fork for enteric bacteria on Monday. The presence of these bacteria may come from storm water runoff, pets, wildlife and human sewage.