I also got a out of control fire in the middle of the map.. A House fire which spread to all the wood land at the back.. all the way to the end of the tree's.. I had over 15 burnt cars... All LHF's were at this.. was crazy! Had to let it burn.. Was spreading so quick!
I had that happen, I tried to make a fireline(cutting 2 rows of trees ahead of the fire) and failed.. I restarted the game.