An unprecedented string of wildfires in Canada's Atlantic-coast province of Nova Scotia continued to burn out of control for a fourth day on Wednesday, preventing thousands of evacuees from trying to see if their homes have been destroyed.Fire officials were hoping for a break in the dry, windy weather, but that's not forecast to happen until Friday night at the earliest.Deputy fire chief David Meldrum made it clear that none of the 16,000 evacuees from the suburbs around Halifax will be able to return home for now. Another 2,000 people who fled a much larger uncontained fire in southwestern Nova Scotia also are being kept away from their properties.Fire officials say an estimated 200 structures, including 151 homes, have been destroyed since the fire started in the Upper Tantallon area on Sunday afternoon.The much larger fire that forced 2,000 people to flee outside Barrington has grown to almost 200 square kilometers (77 square miles) since it started last weekend, making it one of largest ever recorded in Nova Scotia.Nova Scotia Premier Tim Houston declared a ban on all travel and activity in wooded areas, and implored people to avoid any activity that could start more fires.Scott Tingley, the forest protection manager in the province’s wildfire management group, said it is safe to say that all of these fires were “very likely human-caused.”