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Hurricane Irma Graphics
2017-09-06 19:56:30| National Hurricane Center (Atlantic)
5-Day Uncertainty Track last updated Wed, 06 Sep 2017 17:56:30 GMT Wind Speed Probabilities last updated Wed, 06 Sep 2017 15:25:52 GMT
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Hurricane Irma Public Advisory Number 30A
2017-09-06 19:53:42| National Hurricane Center (Atlantic)
Issued at 200 PM AST Wed Sep 06 2017 000 WTNT31 KNHC 061753 TCPAT1 BULLETIN Hurricane Irma Intermediate Advisory Number 30A NWS National Hurricane Center Miami FL AL112017 200 PM AST Wed Sep 06 2017 ...EXTREMELY DANGEROUS CORE OF CATEGORY 5 HURRICANE IRMA PASSING OVER THE NORTHERMOST VIRGIN ISLANDS... SUMMARY OF 200 PM AST...1800 UTC...INFORMATION ---------------------------------------------- LOCATION...18.5N 64.7W ABOUT 20 MI...35 KM ENE OF ST. THOMAS ABOUT 90 MI...150 KM E OF SAN JUAN PUERTO RICO MAXIMUM SUSTAINED WINDS...185 MPH...295 KM/H PRESENT MOVEMENT...WNW OR 285 DEGREES AT 16 MPH...26 KM/H MINIMUM CENTRAL PRESSURE...920 MB...27.17 INCHES WATCHES AND WARNINGS -------------------- CHANGES WITH THIS ADVISORY: The government of Curacao on behalf of Sint Maartin has discontinued the Hurricane Warning for Sint Maartin. The government of Antigua has discontinued the Hurricane warning for Anguilla. SUMMARY OF WATCHES AND WARNINGS IN EFFECT: A Hurricane Warning is in effect for... * Saint Martin and Saint Barthelemy * British Virgin Islands * U.S. Virgin Islands * Puerto Rico, Vieques, and Culebra * Dominican Republic from Cabo Engano to the northern border with Haiti * Haiti from the northern border with the Dominican Republic to Le Mole St. Nicholas * Southeastern Bahamas and the Turks and Caicos Islands A Hurricane Watch is in effect for... * Cuba from Matanzas province eastward to Guantanamo province * Central Bahamas A Tropical Storm Warning is in effect for... * Dominican Republic from south of Cabo Engano westward to the southern border with Haiti * Haiti from south of Le Mole St. Nicholas to Port-Au-Prince 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 watch is typically issued 48 hours before the anticipated first occurrence of tropical-storm-force winds, conditions that make outside preparations difficult or dangerous. A Tropical Storm Warning means that tropical storm conditions are expected somewhere within the warning area. Interests elsewhere in the Dominican Republic and Haiti, as well as Cuba, the northwestern Bahamas, and Florida should monitor the progress of Irma. 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 the United States, please monitor products issued by your national meteorological service. DISCUSSION AND 48-HOUR OUTLOOK ------------------------------ At 200 PM AST (1800 UTC), the eye of Hurricane Irma was located near latitude 18.5 North, longitude 64.7 West. Irma is moving toward the west-northwest near 16 mph (26 km/h), and this general motion is expected to continue for the next couple of days. On the forecast track, the extremely dangerous core of Irma will continue to move over portions of the Virgin Islands during the next couple of hours, pass near or just north of Puerto Rico this afternoon or tonight, pass near or just north of the coast of the Dominican Republic Thursday, and be near the Turks and Caicos and southeastern Bahamas late Thursday. Maximum sustained winds are near 185 mph (295 km/h) with higher gusts. Irma is a category 5 hurricane on the Saffir-Simpson Hurricane Wind Scale. Some fluctuations in intensity are likely during the next day or two, but Irma is forecast to remain a powerful category 4 or 5 hurricane during the next couple of days. An unofficial observation on Buck Island in the U.S. Virgin Islands has recently reported sutained winds of 106 mph (171 km/h) with a gust to 131 mph (211 km/h). Hurricane-force winds extend outward up to 50 miles (85 km) from the center and tropical-storm-force winds extend outward up to 185 miles (295 km). The latest estimated minimum central pressure from reconnaissance datat is 920 mb (27.17 inches). HAZARDS AFFECTING LAND ---------------------- STORM SURGE: The combination of a life-threatening storm surge and large breaking waves will raise water levels ABOVE NORMAL TIDE LEVELS by the following amounts within the hurricane warning area near and to the north of the center of Irma. Near the coast, the surge will be accompanied by large and destructive waves. Northern Leeward Islands...7 to 11 ft Turks and Caicos Islands...15 to 20 ft Southeastern Bahamas...15 to 20 ft Northern coast of the Dominican Republic...3 to 5 ft Northern coast of Haiti and the Gulf of Gonave...1 to 3 ft The combination of a life-threatening storm surge and the tide will cause normally dry areas near the coast to be flooded by rising waters moving inland from the shoreline. The water is expected to reach the following HEIGHTS ABOVE GROUND if the peak surge occurs at the time of high tide... British and U.S. Virgin Islands except St. Croix...7 to 11 ft Northern coast of Puerto Rico...4 to 6 ft Southern coast of Puerto Rico and St. Croix...2 to 4 ft The deepest water will occur along the immediate coast in areas of onshore winds, where the surge will be accompanied by large and destructive waves. Surge-related flooding depends on the relative timing of the surge and the tidal cycle, and can vary greatly over short distances. For information specific to your area, please see products issued by your local National Weather Service forecast office. WIND: Hurricane conditions will continue today within the hurricane warning area in the Leeward Islands. Hurricane conditions are occurring over the British and U.S. Virgin Islands and will spread westward over portions of Puerto Rico later today. Hurricane conditions are expected to begin within the hurricane warning area in the Dominican Republic and and Haiti on Thursday, with tropical storm conditions beginning tonight. Hurricane conditions are expected in the warning area in the southeastern Bahamas and the Turks and Caicos Islands beginning Thursday night. Hurricane and tropical storm conditions are possible within the watch area in the central Bahamas and Cuba by Friday. RAINFALL: Irma is expected to produce the following rain accumulations through Saturday: Northern Leeward Islands...8 to 12 inches, isolated 20 inches Northeast Puerto Rico and the British and U.S. Virgin Islands...4 to 10 inches, isolated 15 inches Southwest Puerto Rico, the southern Leeward Islands, and Saint Croix...2 to 4 inches Southeast Bahamas and Turks and Caicos...8 to 12 inches, isolated 20 inches Northern Dominican Republic, northern Haiti, eastern and central Cuba...4 to 10 inches, isolated 15 inches Southwest Haiti...1 to 4 inches In all areas this rainfall may cause life-threatening flash floods and mudslides. SURF: Swells generated by Irma will affect the northern Leeward Islands, Puerto Rico, the Virgin Islands, the southeastern Bahamas, the Turks and Caicos Islands, the northern coast of the Dominican Republic, and portions of the southeast coast of the United States during the next several 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 PM AST. $$ Forecaster Brown
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Summary for Hurricane Irma (AT1/AL112017)
2017-09-06 18:57:14| National Hurricane Center (Atlantic)
...100 PM AST POSITION UPDATE... ...EYE OF IRMA PASSING OVER THE BRITISH VIRGIN ISLANDS... As of 1:00 PM AST Wed Sep 6 the center of Irma was located near 18.4, -64.5 with movement WNW at 16 mph. The minimum central pressure was 920 mb with maximum sustained winds of about 185 mph.
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Hurricane Irma Update Statement
2017-09-06 18:57:14| National Hurricane Center (Atlantic)
Issued at 100 PM AST Wed Sep 06 2017 000 WTNT61 KNHC 061657 TCUAT1 Hurricane Irma Tropical Cyclone Update NWS National Hurricane Center Miami FL AL112017 100 PM AST Wed Sep 06 2017 ...100 PM AST POSITION UPDATE... ...EYE OF IRMA PASSING OVER THE BRITISH VIRGIN ISLANDS... A wind gust to 110 mph (177 km/h) has recently been reported at Buck Island in the U.S. Virgin Islands. A NOAA National Ocean Service observing site at Charlotte Amalie in the U.S. Virgin Islands recently reported a wind gust to 82 mph (131 km/hr) SUMMARY OF 100 PM AST...1700 UTC...INFORMATION ---------------------------------------------- LOCATION...18.4N 64.5W ABOUT 35 MI...55 KM E OF ST. THOMAS ABOUT 105 MI...170 KM E OF SAN JUAN PUERTO RICO MAXIMUM SUSTAINED WINDS...185 MPH...295 KM/H PRESENT MOVEMENT...WNW OR 285 DEGREES AT 16 MPH...26 KM/H MINIMUM CENTRAL PRESSURE...920 MB...27.17 INCHES $$ Forecaster Zelinsky
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Summary for Hurricane Irma (AT1/AL112017)
2017-09-06 18:00:14| National Hurricane Center (Atlantic)
...1200 PM AST POSITION UPDATE... ...CORE OF IRMA HEADING TOWARD THE VIRGIN ISLANDS... As of 12:00 PM AST Wed Sep 6 the center of Irma was located near 18.3, -64.2 with movement WNW at 16 mph. The minimum central pressure was 922 mb with maximum sustained winds of about 185 mph.
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