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A weather or hydrologic hazardous event issued for the protection of life and property and the enhancement of the national economy. The hazards grid includes long duration coastal, marine, non-precipitation, tropical, convective, winter weather and some hydrological hazards. It does not include some short duration watches and warnings such as Tornado, Severe Thunderstorm, Flash Flood, Gale, and Special Marine Warnings. See the latest Hazards Product Description Document at: http://www.weather.gov/ndfd/pdd.htm for the latest listing of included hazards and definitions. |
