1. Check the weather forecast before going out. Always check the weather forecast before spending time outdoors during the summer. 2. Pay close attention to thunderstorm trends. In spring and summer, temperatures rise and warm air rises to form cumulonimbus clouds, making thunderstorms most likely to occur. Towering cumulonimbus clouds formed by sustained high temperatures are often the first sign of a thunderstorm. 3. Dodge when you hear thunder. Lightning can strike up to 10 miles outside the rain zone, about as far as hearing thunder. Just in case, if you hear the rumble of thunder, immediately