Most fire losses in the Southeast are due to a few fires occurring on a few days. Moving weather systems are a factor in most of these. A large-scale moving weather system, such as a dry cold front, may trigger unusual fire behavior. In extreme cases winds may shift and gust to 40 mph or more and relative humidities may fall to 10 percent or less. Extreme cases are infrequent but usually develop in a few hours* time. Major fire activity due to the effects of moving weather systems can be anticipated, and warnings issued, using present techniques. Required to implement this are: (1) further research, and (2) large forecast and warning center facilities for the eastern United States.