000 ABNT20 KNHC 210541 TWOAT TROPICAL WEATHER OUTLOOK NWS NATIONAL HURRICANE CENTER MIAMI FL 100 AM EST MON NOV 21 2016 For the North Atlantic...Caribbean Sea and the Gulf of Mexico: Thunderstorm activity associated with a small but well-defined low pressure system located over the extreme southwestern Caribbean Sea has continued to increase and become better organized over the past several hours, and a tropical depression or a tropical storm appears to be forming. If this development trend continues, then advisories will likely be issued on this disturbance later this morning. For additional information on this system, see High Seas Forecasts issued by the National Weather Service. * Formation chance through 48 hours...high...90 percent * Formation chance through 5 days...high...90 percent && High Seas Forecasts issued by the National Weather Service can be found under AWIPS header NFDHSFAT1, WMO header FZNT01 KWBC, and at http://www.opc.ncep.noaa.gov/shtml/NFDHSFAT1.shtml. $$ Forecaster Stewart