A wildfire that exploded in size in a matter of hours ripped through wide swaths of ranchland in rural Texas, burning structures at a youth camp while forcing evacuations and closing schools Tuesday. The fire, which began early Monday afternoon, charred more than 78 square miles in less than a day across lightly populated areas in two counties in north central Texas. Fueled by whipping winds along with extremely hot and dry conditions, the Ross Fire jumped creeks and rivers, residents said. “It just took off way too fast,” said Katie Rochelle, whose fifth-generation family canoe rental business lost its office and repair shop outside Graford. “The wind was going in a tornado motion.” …High temperatures and gusty winds allowed the blaze to shoot up faster than anyone could have imagined… “We’ve thrown everything at this, and we’re still having minimal effect,” Fire Chief Danny Watkins said. There was just 8% containment as of Tuesday evening.