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Summary for Hurricane Irma (AT1/AL112017)
2017-09-05 08:27:03| National Hurricane Center (Atlantic)
...SEVERE HURRICANE IRMA POSES A SERIOUS THREAT TO THE LEEWARD ISLANDS... ...ALL PREPARATIONS SHOULD BE RUSHED TO COMPLETION... As of 2:00 AM AST Tue Sep 5 the center of Irma was located near 16.6, -56.4 with movement W at 13 mph. The minimum central pressure was 939 mb with maximum sustained winds of about 145 mph.
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Hurricane Irma Public Advisory Number 23A
2017-09-05 08:27:03| National Hurricane Center (Atlantic)
Issued at 200 AM AST Tue Sep 05 2017 000 WTNT31 KNHC 050626 CCA TCPAT1 BULLETIN Hurricane Irma Intermediate Advisory Number 23A...Corrected NWS National Hurricane Center Miami FL AL112017 200 AM AST Tue Sep 05 2017 Corrected for Rushed instead of Rush in the headline ...SEVERE HURRICANE IRMA POSES A SERIOUS THREAT TO THE LEEWARD ISLANDS... ...ALL PREPARATIONS SHOULD BE RUSHED TO COMPLETION... SUMMARY OF 200 AM AST...0600 UTC...INFORMATION ---------------------------------------------- LOCATION...16.6N 56.4W ABOUT 360 MI...575 KM E OF THE LEEWARD ISLANDS MAXIMUM SUSTAINED WINDS...145 MPH...235 KM/H PRESENT MOVEMENT...W OR 270 DEGREES AT 13 MPH...20 KM/H MINIMUM CENTRAL PRESSURE...939 MB...27.73 INCHES WATCHES AND WARNINGS -------------------- CHANGES WITH THIS ADVISORY: None. 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 * British Virgin Islands * U.S. Virgin Islands * Puerto Rico, Vieques, and Culebra A Hurricane Watch is in effect for... * Guadeloupe 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, Cuba, and the southeastern and central 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 200 AM AST (0600 UTC), the eye of Hurricane Irma was located by an Air Force Hurricane Hunter aircraft near latitude 16.6 North, longitude 56.4 West. Irma is moving toward the west near 13 mph (20 km/h), and this general motion is expected to continue today, followed by a turn toward the west-northwest Tuesday night. 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 Hurricane Hunter plane indicate that the maximum sustained winds have increased to near 145 mph (235 km/h) with higher gusts. Irma is a category 4 hurricane on the Saffir-Simpson Hurricane Wind Scale. Additional strengthening is possible during the next 48 hours. Hurricane-force winds extend outward up to 45 miles (75 km) from the center and tropical-storm-force winds extend outward up to 140 miles (220 km). The minimum central pressure just estimated from a Hurricane Hunter plane was 939 mb (27.73 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 beginning earlier during the day. Tropical storm conditions are expected within the tropical storm warning area where hurricane conditions are also possible. RAINFALL: Irma is expected to produce total rainfall accumulations of 3 to 6 inches with isolated maximum amounts of 10 inches across the northern Leeward Islands, the British and U.S. Virgin Islands, and Puerto Rico. These rainfall amounts may cause life-threatening flash floods and mudslides. SURF: Swells generated by Irma will affect the northern Leeward Islands, Puerto Rico, and the U.S. and British Virgin 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 complete advisory at 500 AM AST. $$ Forecaster Avila
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Hurricane Irma Graphics
2017-09-05 07:37:48| National Hurricane Center (Atlantic)
5-Day Uncertainty Track last updated Tue, 05 Sep 2017 05:37:48 GMT Wind Speed Probabilities last updated Tue, 05 Sep 2017 03:22:39 GMT
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Summary for Hurricane Irma (AT1/AL112017)
2017-09-05 07:36:30| National Hurricane Center (Atlantic)
...SEVERE HURRICANE IRMA POSES A SERIOUS THREAT TO THE LEEWARD ISLANDS... ...ALL PREPARATIONS SHOULD BE RUSH TO COMPLETION... As of 2:00 AM AST Tue Sep 5 the center of Irma was located near 16.6, -56.4 with movement W at 13 mph. The minimum central pressure was 939 mb with maximum sustained winds of about 145 mph.
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at1al112017
Hurricane Irma Public Advisory Number 23A
2017-09-05 07:36:30| National Hurricane Center (Atlantic)
Issued at 200 AM AST Tue Sep 05 2017 000 WTNT31 KNHC 050536 TCPAT1 BULLETIN Hurricane Irma Intermediate Advisory Number 23A NWS National Hurricane Center Miami FL AL112017 200 AM AST Tue Sep 05 2017 ...SEVERE HURRICANE IRMA POSES A SERIOUS THREAT TO THE LEEWARD ISLANDS... ...ALL PREPARATIONS SHOULD BE RUSH TO COMPLETION... SUMMARY OF 200 AM AST...0600 UTC...INFORMATION ---------------------------------------------- LOCATION...16.6N 56.4W ABOUT 360 MI...575 KM E OF THE LEEWARD ISLANDS MAXIMUM SUSTAINED WINDS...145 MPH...235 KM/H PRESENT MOVEMENT...W OR 270 DEGREES AT 13 MPH...20 KM/H MINIMUM CENTRAL PRESSURE...939 MB...27.73 INCHES WATCHES AND WARNINGS -------------------- CHANGES WITH THIS ADVISORY: None. 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 * British Virgin Islands * U.S. Virgin Islands * Puerto Rico, Vieques, and Culebra A Hurricane Watch is in effect for... * Guadeloupe 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, Cuba, and the southeastern and central 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 200 AM AST (0600 UTC), the eye of Hurricane Irma was located by an Air Force Hurricane Hunter aircraft near latitude 16.6 North, longitude 56.4 West. Irma is moving toward the west near 13 mph (20 km/h), and this general motion is expected to continue today, followed by a turn toward the west-northwest Tuesday night. 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 Hurricane Hunter plane indicate that the maximum sustained winds have increased to near 145 mph (235 km/h) with higher gusts. Irma is a category 4 hurricane on the Saffir-Simpson Hurricane Wind Scale. Additional strengthening is possible during the next 48 hours. Hurricane-force winds extend outward up to 45 miles (75 km) from the center and tropical-storm-force winds extend outward up to 140 miles (220 km). The minimum central pressure just estimated from a Hurricane Hunter plane was 939 mb (27.73 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 beginning earlier during the day. Tropical storm conditions are expected within the tropical storm warning area where hurricane conditions are also possible. RAINFALL: Irma is expected to produce total rainfall accumulations of 3 to 6 inches with isolated maximum amounts of 10 inches across the northern Leeward Islands, the British and U.S. Virgin Islands, and Puerto Rico. These rainfall amounts may cause life-threatening flash floods and mudslides. SURF: Swells generated by Irma will affect the northern Leeward Islands, Puerto Rico, and the U.S. and British Virgin 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 complete advisory at 500 AM AST. $$ Forecaster Avila
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