The nowCOAST 'wwa' Web Map Service (WMS) provides layers containing near real-time watches, warnings and advisories from the National Weather Service (NWS). These layers include the latest Tropical Cyclone Track Forecast from the NWS National Hurricane Center (NHC), updated hourly, as well as NWS short-duration warnings (Tornado, Extreme Wind, Severe Thunderstorm, Flood, Flash Flood, and Special Marine Warnings), updated each minute. The The 'wwa' WMS is one of several map services provided by NOAA's nowCOAST project (http://nowcoast.noaa.gov). For further layer information such as layer icons, legend graphics, layer descriptions, and valid timestamps, see the nowCOAST 'LayerInfo Web Service' description page at: http://nowcoast.noaa.gov/help/layerinfo.shtml. For more information about nowCOAST's available Web Map Services, see the nowCOAST Map Services information page at: http://nowcoast.noaa.gov/help/mapservices.shtml. nowCOAST is a product of the NOAA/NOS/OCS Coast Survey Development Laboratory.