extreme weather
flooding
floods
flooding and precipitation
floods and the United States
flash flood
floods and science
blizzards
blizzards and precipitation
snowstorms
winter storms
Extreme Weather Magazine
http://weather.about.com/od/weatherbookreviews/fr/weather_mag.htm
Extreme Weather Magazine for Kids
http://www.kidsdiscover.com/product/174/EXTREME_WEATHER
Search storms in every state.