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Summary for Hurricane Irma (AT1/AL112017)
2017-09-04 22:36:59| National Hurricane Center (Atlantic)
...IRMA STRENGTHENS AS IT HEADS TOWARD THE LEEWARD ISLANDS... ...PREPARATIONS WITHIN THE WARNING AREA SHOULD BE RUSHED TO COMPLETION... As of 5:00 PM AST Mon Sep 4 the center of Irma was located near 16.7, -54.4 with movement W at 13 mph. The minimum central pressure was 944 mb with maximum sustained winds of about 130 mph.
Hurricane Irma Public Advisory Number 22
2017-09-04 22:36:59| National Hurricane Center (Atlantic)
Issued at 500 PM AST Mon Sep 04 2017 000 WTNT31 KNHC 042036 TCPAT1 BULLETIN Hurricane Irma Advisory Number 22 NWS National Hurricane Center Miami FL AL112017 500 PM AST Mon Sep 04 2017 ...IRMA STRENGTHENS AS IT HEADS TOWARD THE LEEWARD ISLANDS... ...PREPARATIONS WITHIN THE WARNING AREA SHOULD BE RUSHED TO COMPLETION... SUMMARY OF 500 PM AST...2100 UTC...INFORMATION ---------------------------------------------- LOCATION...16.7N 54.4W ABOUT 490 MI...790 KM E OF THE LEEWARD ISLANDS MAXIMUM SUSTAINED WINDS...130 MPH...215 KM/H PRESENT MOVEMENT...W OR 265 DEGREES AT 13 MPH...20 KM/H MINIMUM CENTRAL PRESSURE...944 MB...27.88 INCHES WATCHES AND WARNINGS -------------------- CHANGES WITH THIS ADVISORY: The government of France has issued a Tropical Storm Warning for Guadeloupe. SUMMARY OF WATCHES AND WARNINGS IN EFFECT: A Hurricane Warning is in effect for... * Antigua, Barbuda, Anguilla, Montserrat, St. Kitts, and Nevis * Saba, St. Eustatius, and Sint Maarten * Saint Martin and Saint Barthelemy A Hurricane Watch is in effect for... * Guadeloupe * British Virgin Islands * U.S. Virgin Islands * Puerto Rico, Vieques, and Culebra A Tropical Storm Warning is in effect for... * Guadeloupe A Tropical Storm Watch is in effect for... * Dominica A Hurricane Warning means that hurricane conditions are expected somewhere within the warning area. A warning is typically issued 36 hours before the anticipated first occurrence of tropical-storm- force winds, conditions that make outside preparations difficult or dangerous. 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 within 36 hours. A Tropical Storm Watch means that tropical storm conditions are possible within the watch area, generally within 48 hours. Interests in the Dominican Republic, Haiti, the Turks and Caicos Islands, and the southeastern Bahamas 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 500 PM AST (2100 UTC), the center of Hurricane Irma was located near latitude 16.7 North, longitude 54.4 West. Irma is moving toward the west near 13 mph (20 km/h) and this general motion is expected to continue into Tuesday, followed by a turn toward the west-northwestward late Tuesday. On the forecast track, the center of Irma will move near or over portions of the northern Leeward Islands Tuesday night and early Wednesday. Data from an Air Force Reserve Hurricane Hunter aircraft indicate that the maximum sustained winds have increased to near 130 mph (215 km/h) with higher gusts. Irma is a category 4 hurricane on the Saffir-Simpson Hurricane Wind Scale. Additional strengthening is forecast during the next 48 hours. Hurricane-force winds extend outward up to 40 miles (65 km) from the center and tropical-storm-force winds extend outward up to 140 miles (220 km). The latest minimum central pressure reported by reconnaissance aircraft is 944 mb (27.88 inches). HAZARDS AFFECTING LAND ---------------------- STORM SURGE: The combination of a dangerous storm surge and large breaking waves will raise water levels by as much as 6 to 9 feet above normal tide levels along the coasts of the extreme northern Leeward Islands 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. The combination of a dangerous 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...4 to 6 ft Northern coast of Puerto Rico...2 to 4 ft Southern coast of Puerto Rico and St. Croix...1 to 2 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 are expected within the hurricane warning area by Tuesday night, with tropical storm conditions expected by late Tuesday. Hurricane conditions are possible within the hurricane watch area in the Virgin Islands and Puerto Rico by late Wednesday, with tropical storm conditions possible by early Wednesday. Tropical Storm conditions are expected within the tropical storm warning area by late Tuesday. RAINFALL: Irma is expected to produce total rainfall accumulations of 3 to 6 inches across the Leeward Islands, with isolated maximum amounts of 10 inches across the northern Leeward Islands. These rainfall amounts may cause life-threatening flash floods and mudslides. SURF: Swells generated by Irma will affect the northern Leeward Islands 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 intermediate advisory at 800 PM AST. Next complete advisory at 1100 PM AST. $$ Forecaster Brown
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Hurricane Irma Forecast Advisory Number 22
2017-09-04 22:36:27| National Hurricane Center (Atlantic)
Issued at 2100 UTC MON SEP 04 2017 000 WTNT21 KNHC 042036 TCMAT1 HURRICANE IRMA FORECAST/ADVISORY NUMBER 22 NWS NATIONAL HURRICANE CENTER MIAMI FL AL112017 2100 UTC MON SEP 04 2017 CHANGES IN WATCHES AND WARNINGS WITH THIS ADVISORY... THE GOVERNMENT OF FRANCE HAS ISSUED A TROPICAL STORM WARNING FOR GUADELOUPE. SUMMARY OF WATCHES AND WARNINGS IN EFFECT... A HURRICANE WARNING IS IN EFFECT FOR... * ANTIGUA... BARBUDA... ANGUILLA... MONTSERRAT... ST. KITTS... AND NEVIS * SABA... ST. EUSTATIUS... AND SINT MAARTEN * SAINT MARTIN AND SAINT BARTHELEMY A HURRICANE WATCH IS IN EFFECT FOR... * GUADELOUPE * BRITISH VIRGIN ISLANDS * U.S. VIRGIN ISLANDS * PUERTO RICO... VIEQUES... AND CULEBRA A TROPICAL STORM WARNING IS IN EFFECT FOR... * GUADELOUPE A TROPICAL STORM WATCH IS IN EFFECT FOR... * DOMINICA A HURRICANE WARNING MEANS THAT HURRICANE CONDITIONS ARE EXPECTED SOMEWHERE WITHIN THE WARNING AREA. A WARNING IS TYPICALLY ISSUED 36 HOURS BEFORE THE ANTICIPATED FIRST OCCURRENCE OF TROPICAL-STORM- FORCE WINDS... CONDITIONS THAT MAKE OUTSIDE PREPARATIONS DIFFICULT OR DANGEROUS. 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 WITHIN 36 HOURS. A TROPICAL STORM WATCH MEANS THAT TROPICAL STORM CONDITIONS ARE POSSIBLE WITHIN THE WATCH AREA... GENERALLY WITHIN 48 HOURS. INTERESTS IN THE DOMINICAN REPUBLIC... HAITI... THE TURKS AND CAICOS ISLANDS... AND THE SOUTHEASTERN BAHAMAS SHOULD MONITOR THE PROGRESS OF IRMA. HURRICANE CENTER LOCATED NEAR 16.7N 54.4W AT 04/2100Z POSITION ACCURATE WITHIN 10 NM PRESENT MOVEMENT TOWARD THE WEST OR 265 DEGREES AT 11 KT ESTIMATED MINIMUM CENTRAL PRESSURE 944 MB EYE DIAMETER 15 NM MAX SUSTAINED WINDS 115 KT WITH GUSTS TO 140 KT. 64 KT....... 35NE 30SE 20SW 30NW. 50 KT....... 60NE 50SE 40SW 50NW. 34 KT.......120NE 100SE 70SW 110NW. 12 FT SEAS..270NE 120SE 180SW 270NW. WINDS AND SEAS VARY GREATLY IN EACH QUADRANT. RADII IN NAUTICAL MILES ARE THE LARGEST RADII EXPECTED ANYWHERE IN THAT QUADRANT. REPEAT...CENTER LOCATED NEAR 16.7N 54.4W AT 04/2100Z AT 04/1800Z CENTER WAS LOCATED NEAR 16.7N 53.9W FORECAST VALID 05/0600Z 16.6N 56.2W MAX WIND 125 KT...GUSTS 150 KT. 64 KT... 40NE 30SE 20SW 30NW. 50 KT... 60NE 50SE 30SW 60NW. 34 KT...130NE 100SE 70SW 110NW. FORECAST VALID 05/1800Z 17.0N 58.7W MAX WIND 130 KT...GUSTS 160 KT. 64 KT... 40NE 30SE 25SW 30NW. 50 KT... 70NE 60SE 40SW 60NW. 34 KT...140NE 110SE 80SW 120NW. FORECAST VALID 06/0600Z 17.8N 61.3W MAX WIND 130 KT...GUSTS 160 KT. 64 KT... 40NE 35SE 30SW 35NW. 50 KT... 80NE 70SE 50SW 70NW. 34 KT...150NE 130SE 90SW 140NW. FORECAST VALID 06/1800Z 18.7N 64.1W MAX WIND 125 KT...GUSTS 150 KT. 50 KT... 80NE 70SE 60SW 70NW. 34 KT...160NE 140SE 90SW 150NW. FORECAST VALID 07/1800Z 20.4N 69.7W MAX WIND 120 KT...GUSTS 145 KT. 50 KT... 90NE 80SE 60SW 80NW. 34 KT...180NE 160SE 100SW 160NW. EXTENDED OUTLOOK. NOTE...ERRORS FOR TRACK HAVE AVERAGED NEAR 150 NM ON DAY 4 AND 200 NM ON DAY 5...AND FOR INTENSITY NEAR 15 KT EACH DAY OUTLOOK VALID 08/1800Z 21.6N 74.8W MAX WIND 115 KT...GUSTS 140 KT. OUTLOOK VALID 09/1800Z 23.0N 79.0W MAX WIND 115 KT...GUSTS 140 KT. REQUEST FOR 3 HOURLY SHIP REPORTS WITHIN 300 MILES OF 16.7N 54.4W NEXT ADVISORY AT 05/0300Z $$ FORECASTER BROWN
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Hurricane Irma Graphics
2017-09-04 19:42:43| National Hurricane Center (Atlantic)
5-Day Uncertainty Track last updated Mon, 04 Sep 2017 17:42:43 GMT Wind Speed Probabilities last updated Mon, 04 Sep 2017 15:25:40 GMT
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Summary for Hurricane Irma (AT1/AL112017)
2017-09-04 19:41:00| National Hurricane Center (Atlantic)
...IRMA CONTINUES TO MOVE WEST-SOUTHWESTWARD TOWARD THE LEEWARD ISLANDS... As of 2:00 PM AST Mon Sep 4 the center of Irma was located near 16.7, -53.8 with movement WSW at 14 mph. The minimum central pressure was 944 mb with maximum sustained winds of about 120 mph.
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