000 AGXX40 KNHC 240653 MIMATS Marine Weather Discussion NWS National Hurricane Center Miami FL 253 AM EDT Thu Aug 24 2017 Marine Weather Discussion for the Gulf of Mexico, Caribbean Sea, and Tropical North Atlantic from 07N to 19N between 55W and 64W and the Southwest North Atlantic including the Bahamas. ...GULF OF MEXICO... USAF Reserve and NOAA Hurricane Hunter reconnaissance aircraft found newly upgraded Tropical Storm Harvey near 22.6N 92.6W in the southwest Gulf, moving northwest at 5 to 10 kt. Maximum sustained winds are 35 kt with gusts to 45 kt. Harvey is forecast to intensify to a hurricane before making landfall on the central coast of Texas late Fri night to early Sat morning. See hurricanes.gov for the latest information Harvey. Farther east, weak low pres in the southeast Gulf will linger over the area through this evening, before moving northeast across central Florida. This low pressure will have minimal impact on winds and seas, but may serve as a focus for scattered showers and thunderstorms over the far southeast Gulf. ...CARIBBEAN SEA AND TROPICAL N ATLANTIC FROM 07N TO 19N BETWEEN 55W AND 64W... Recent scatterometer data along with ship and buoy data indicate moderate to fresh winds over the central Caribbean, gentle to moderate over the eastern Caribbean, and light to gentle winds over the western Caribbean as well as the forecast zones in the tropical north Atlantic waters. Seas are in the 4-6 ft range over the central Caribbean, 2-4 ft over the eastern Caribbean, 2-3 ft over the western Caribbean, and 3-4 ft over the tropical north Atlantic waters. High pressure building north of the area will tighten the pressure gradient between the ridge and climatological low pressure over Colombia. This will help pulsing of strong winds off the coast of northwest Venezuela and northeast Colombia the next several days. Little change is expected elsewhere through the next several days. ...SW N ATLANTIC INCLUDING THE BAHAMAS... A surface ridge extends east to west along 28N/29N. Recent scatterometer data along with ship and buoy data indicate light to gentle winds prevail over the area. Seas are in the 3-4 ft range outside the Bahamas, and 1-2 ft west of the Bahamas. The subtropical ridge will remain along 28N into Fri with little change in winds or seas. The main forecast issue continues to be the emergence of weak low pressure off the coast of northeast Florida toward the end of the week into the weekend. Currently, the low looks to deepen north of the forecast waters, which will keep the main marine impacts north of the discussion area. $$ .WARNINGS...Any changes impacting coastal NWS offices will be coordinated through AWIPS II Collaboration Chat, or by telephone: .GULF OF MEXICO... .GMZ011...NW GULF INCLUDING STETSON BANK... Tropical Storm Warning tonight into Fri. Hurricane Warning Fri night. .GMZ017...W CENTRAL GULF FROM 22N TO 26N W OF 94W... Tropical Storm Warning today into Fri night. .GMZ019...CENTRAL GULF FROM 22N TO 26N BETWEEN 87W AND 94W... Tropical Storm Warning today into tonight. .CARIBBEAN SEA AND TROPICAL N ATLANTIC FROM 07N TO 19N BETWEEN 55W AND 64W... None. .SW N ATLANTIC INCLUDING THE BAHAMAS... None. $$ *For detailed zone descriptions, please visit: http://www.nhc.noaa.gov/abouttafbprod.shtml#OWF Note: gridded marine forecasts are available in the National Digital Forecast Database (NDFD) at: http://www.nhc.noaa.gov/marine/grids.php For additional information, please visit: http://www.nhc.noaa.gov/marine $$ .Forecaster Christensen. National Hurricane Center.