(Mosier, OR) -- Hundreds of people remain under mandatory evacuation orders as the Rowena Fire continues to spread through the Columbia River Gorge. Fire officials say the blaze is still uncontained after growing to 35-hundred acres in just 24 hours yesterday. Officials say the fire is being fueled by gusty winds and dry conditions. At least 20 homes have been destroyed and another 21-hundred are threatened. Investigators believe the blaze is human-caused.