000 WTNT31 KNHC 301453 TCPAT1 BULLETIN HURRICANE JOAQUIN ADVISORY NUMBER 11 NWS NATIONAL HURRICANE CENTER MIAMI FL AL112015 1100 AM EDT WED SEP 30 2015 ...JOAQUIN STRENGTHENS SOME MORE AS IT MOVES SOUTHWESTWARD TOWARD THE CENTRAL BAHAMAS... SUMMARY OF 1100 AM EDT...1500 UTC...INFORMATION ----------------------------------------------- LOCATION...24.7N 72.6W ABOUT 215 MI...345 KM ENE OF THE CENTRAL BAHAMAS MAXIMUM SUSTAINED WINDS...80 MPH...130 KM/H PRESENT MOVEMENT...SW OR 230 DEGREES AT 6 MPH...9 KM/H MINIMUM CENTRAL PRESSURE...971 MB...28.68 INCHES WATCHES AND WARNINGS -------------------- CHANGES WITH THIS ADVISORY: None. SUMMARY OF WATCHES AND WARNINGS IN EFFECT: A Hurricane Warning is in effect for... * Central Bahamas including Cat Island, the Exumas, Long Island, Rum Cay, and San Salvador. A Hurricane Watch is in effect for... * Northwestern Bahamas including the Abacos, Berry Islands, Bimini, Eleuthera, Grand Bahama Island, and New Providence, but excluding Andros Island A Hurricane Warning means that hurricane conditions are expected somewhere within the warning area. Preparations to protect life and property should be rushed to completion. A Hurricane Watch means that hurricane conditions are possible within the watch area. For storm information specific to your area, please monitor products issued by your national meteorological service. DISCUSSION AND 48-HOUR OUTLOOK ------------------------------ At 1100 AM EDT (1500 UTC), the center of Hurricane Joaquin was located near latitude 24.7 North, longitude 72.6 West. Joaquin is moving toward the southwest near 6 mph (9 km/h). A general motion toward the west-southwest or southwest is expected to continue through tonight. A turn toward the northwest and a decrease in forward speed are forecast Thursday or Thursday night. The center of Joaquin is expected to move near or over portions of the central Bahamas tonight and Thursday. Reports from an Air Force Reserve Hurricane aircraft indicate that maximum sustained winds have increased to near 80 mph (130 km/h) with higher gusts. Additional strengthening is expected, and Joaquin could become a major hurricane during the next couple of days. Hurricane force winds extend outward up to 35 miles (55 km) from the center and tropical storm force winds extend outward up to 125 miles (205 km). The minimum central pressure estimated from the Hurricane Hunter aircraft data is 971 mb (28.67 inches). HAZARDS AFFECTING LAND ---------------------- WIND: Hurricane conditions are expected to reach portions of the Central Bahamas by Thursday morning. Winds are expected to first reach tropical storm strength in the warning area tonight, making outside preparations difficult or dangerous. Preparations to protect life and property should be rushed to completion. Tropical storm conditions are possible in the southeastern Bahamas beginning tonight. Hurricane conditions could reach the northwestern Bahamas early on Friday. STORM SURGE: A dangerous storm surge will raise water levels by as much as 2 to 4 feet above normal tide levels in areas of onshore flow. Near the coast, the surge will be accompanied by large and dangerous waves. RAINFALL: Joaquin is expected to produce 5 to 10 inches of rain over much of the central Bahamas, with isolated maximum amounts of 20 inches possible over San Salvador and Rum Cay through Friday night. Rainfall amounts of 3 to 5 inches are possible over the southeastern Bahamas through Friday night, with 2 to 4 inches expected over the northwestern Bahamas. SURF: Swells generated by Joaquin will affect portions of the Bahamas during the next few days, and will begin to affect portions of the southeastern coast of the United States by Thursday. These swells are likely to cause life-threatening surf and rip current conditions. Please consult products from your local weather office. NEXT ADVISORY ------------- Next intermediate advisory at 200 PM EDT. Next complete advisory at 500 PM EDT. $$ Forecaster Beven