Heavenly and kirkwood ski resorts. however, closer to lake tahoe, lighter wind has been a blessing for fire crews protecting those neighborhoods. captioning sponsored by cbs o donnell: tonight, a triple weather threat. widespread misery from unbearable heat down in louisiana; a tornado and dangerous storms on the east coast; and out west, wind fuels the fire emergency. o donnell: breaking news: a tornado touches down in maryland. tonight, the damage as the threat from more twisters continues. inside the disaster zone: we re in grand isle, louisiana, where every building is damaged, and the road to rebuild is uncertain. reporter: how bad is this? the worst. reporter: the worst. worse than katrina? y oonnell: on tro thcaldorire explodes. the fight tonight to savndom toe. how firefighters are using snow