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| #980296 (Received by flhurricane at: 1:51 AM 01.Sep.2019) TCPAT5 BULLETIN Hurricane Dorian Intermediate Advisory Number 31A NWS National Hurricane Center Miami FL AL052019 200 AM EDT Sun Sep 01 2019 ...EXTREMELY DANGEROUS HURRICANE DORIAN CLOSING IN ON THE NORTHWESTERN BAHAMAS... ...LIFE-THREATENING STORM SURGE...HURRICANE-FORCE WINDS...AND HEAVY RAINFALL EXPECTED OVER THE NORTHWESTERNMOST BAHAMAS... SUMMARY OF 200 AM EDT...0600 UTC...INFORMATION ---------------------------------------------- LOCATION...26.3N 75.6W ABOUT 95 MI...150 KM E OF GREAT ABACO ISLAND ABOUT 280 MI...450 KM E OF WEST PALM BEACH FLORIDA MAXIMUM SUSTAINED WINDS...150 MPH...240 KM/H PRESENT MOVEMENT...W OR 275 DEGREES AT 8 MPH...13 KM/H MINIMUM CENTRAL PRESSURE...934 MB...27.58 INCHES WATCHES AND WARNINGS -------------------- CHANGES WITH THIS ADVISORY: None SUMMARY OF WATCHES AND WARNINGS IN EFFECT: A Hurricane Warning is in effect for... * Northwestern Bahamas excluding Andros Island A Hurricane Watch is in effect for... * Andros Island A Tropical Storm Watch is in effect for... * Deerfield Beach to Sebastian Inlet 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. A Tropical Storm Watch means that tropical storm conditions are possible within the watch area, generally within 48 hours. Interests elsewhere in southern and central Florida should continue to monitor the progress of Dorian. Additional watches may be required for portions of the east coast of Florida today. For storm information specific to your area in the United States, including possible inland watches and warnings, please monitor products issued by your local National Weather Service forecast office. For storm information specific to your area outside of the United States, please monitor products issued by your national meteorological service. DISCUSSION AND OUTLOOK ---------------------- At 200 AM EDT (0600 UTC), the center of Hurricane Dorian was located near latitude 26.3 North, longitude 75.6 West. Dorian is moving toward the west near 8 mph (13 km/h), and a slower westward motion should occur for the next day or two, followed by a gradual turn toward the northwest. On this track, the core of Dorian should be near or over portions of the northwestern Bahamas later today, and move closer to the Florida east coast late Monday through Tuesday. Data from an Air Force Reserve Unit Hurricane Hunter aircraft indicate that the maximum sustained winds remain near 150 mph (240 km/h) with higher gusts. Dorian is a category 4 hurricane on the Saffir-Simpson Hurricane Wind Scale. Some fluctuations in intensity are likely, but Dorian is expected to remain a powerful hurricane during the next few days. Hurricane-force winds extend outward up to 30 miles (45 km) from the center, and tropical-storm-force winds extend outward up to 105 miles (165 km). The minimum central pressure estimated from Hurricane Hunter observations is 934 mb (27.58 inches). HAZARDS AFFECTING LAND ---------------------- WIND: Hurricane conditions are expected in the hurricane warning area across the northwestern Bahamas later today, with tropical storm winds beginning within the next several hours. Tropical storm conditions are possible within the tropical storm watch area on Monday. STORM SURGE: A life-threatening storm surge will raise water levels by as much as 15 to 20 feet above normal tide levels in areas of onshore winds on the Abaco Islands and Grand Bahama Island. Near the coast, the surge will be accompanied by large and destructive waves. RAINFALL: Dorian is expected to produce the following rainfall accumulations this weekend into the middle of next week: Northwestern Bahamas...10 to 15 inches, isolated 25 inches. Coastal sections of the southeast United States from central Florida northward through the Carolinas...4 to 8 inches, isolated 12 inches. Central Bahamas and South Florida...2 to 4 inches, isolated 6 inches. This rainfall may cause life-threatening flash floods. SURF: Large swells will affect the east-facing shores of the Bahamas, the Florida east coast, and the southeastern United States coast during the next few days. These swells are likely to cause life-threatening surf and rip current conditions. Please consult products from your local weather office. NEXT ADVISORY ------------- Next complete advisory at 500 AM EDT. $$ Forecaster Pasch |
