000 ABNT20 KNHC 232328 TWOAT Tropical Weather Outlook NWS National Hurricane Center Miami FL 800 PM EDT Mon Oct 23 2023 For the North Atlantic...Caribbean Sea and the Gulf of Mexico: Active Systems: The National Hurricane Center is issuing advisories on Hurricane Tammy, located a few hundred miles north of the northern Leeward Islands, and on newly formed Tropical Depression Twenty-One, located near the coast of Nicaragua. Tropical cyclone formation is not expected during the next 7 days. && Public Advisories on Tropical Depression Twenty-One are issued under WMO header WTNT31 KNHC and under AWIPS header MIATCPAT1. Forecast/Advisories on Tropical Depression Twenty-One are issued under WMO header WTNT21 KNHC and under AWIPS header MIATCMAT1. $$ Forecaster D. Zelinsky