![]() ![]() Flooding – Hazardous hydrological events resulting in temporary inundation of land areas not normally covered by water, often caused by excessive rainfall.Fire weather – Weather conditions that contribute to an increased risk and help cause the spread of wildfires.Winter storms – Weather hazards associated with freezing or frozen precipitation ( freezing rain, sleet, and/or snow), or combined effects of winter precipitation and strong winds.Severe local storms – Short-fused, small-scale hazardous weather or hydrologic events produced by thunderstorms (including large hail, damaging winds, tornadoes, and flash floods).The NWS divides severe weather alerts into several types of hazardous/hydrologic events: Specific Area Message Encoding (SAME) product codes assigned to each term for NOAA Weather Radio (NWR) broadcasts are included in parentheses following the title of the described alert type if used products that do not have a specified code are identified where applicable as Non-Precipitation Warnings/Watches/Advisories (NPW), Coastal Flood Warnings/Watches/Advisories (CFW), Marine Weather Statement (MWS), Surf Discussion (SRD) or Winter Weather Warnings/Watches/Advisories (WSW) as defined by NOAA.ĭefinitions of severe weather alerts ![]() ![]() Some terms may be specific to certain cities or regions. This article describes NWS terminology and related weather scales used by the agency. The NWS, a government agency operating as an arm of the National Oceanic and Atmospheric Administration (NOAA) branch of the United States Department of Commerce (DoC), defines precise meanings for nearly all of its weather terms. This article describes severe weather terminology used by the National Weather Service (NWS) in the United States. ![]()
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