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Hurricane Harvey Update Statement

2017-08-25 09:51:42| National Hurricane Center (Atlantic)

Issued at 300 AM CDT Fri Aug 25 2017 000 WTNT64 KNHC 250751 TCUAT4 Hurricane Harvey Tropical Cyclone Update NWS National Hurricane Center Miami FL AL092017 300 AM CDT Fri Aug 25 2017 ...3 AM CDT POSITION ESTIMATE... SUMMARY OF 300 AM CDT...0800 UTC...INFORMATION ---------------------------------------------- LOCATION...25.8N 95.4W ABOUT 185 MI...300 KM SE OF CORPUS CHRISTI TEXAS ABOUT 190 MI...305 KM SSE OF PORT OCONNOR TEXAS MAXIMUM SUSTAINED WINDS...105 MPH...165 KM/H PRESENT MOVEMENT...NW OR 315 DEGREES AT 10 MPH...17 KM/H MINIMUM CENTRAL PRESSURE...967 MB...28.56 INCHES $$ Forecaster Zelinsky

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Summary for Hurricane Harvey (AT4/AL092017)

2017-08-25 06:56:23| National Hurricane Center (Atlantic)

...DANGEROUS HURRICANE HARVEY STRENGTHENING... ...WINDS REACH 105 MPH... As of 1:00 AM CDT Fri Aug 25 the center of Harvey was located near 25.6, -95.1 with movement NW at 10 mph. The minimum central pressure was 967 mb with maximum sustained winds of about 105 mph.

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Hurricane Harvey Public Advisory Number 19

2017-08-25 06:09:41| National Hurricane Center (Atlantic)

Issued at 1000 PM CDT Thu Aug 24 2017 000 WTNT34 KNHC 250409 CCA TCPAT4 BULLETIN Hurricane Harvey Advisory Number 19...Corrected NWS National Hurricane Center Miami FL AL092017 1000 PM CDT Thu Aug 24 2017 Corrected for time of next intermediate advisory ...HARVEY EXPECTED TO STRENGTHEN AS IT MOVES TOWARDS THE TEXAS COAST... ...LIFE-THREATENING AND DEVASTATING FLOODING EXPECTED NEAR THE COAST DUE TO HEAVY RAINFALL AND STORM SURGE... SUMMARY OF 1000 PM CDT...0300 UTC...INFORMATION ----------------------------------------------- LOCATION...25.2N 94.6W ABOUT 250 MI...400 KM SE OF CORPUS CHRISTI TEXAS ABOUT 245 MI...400 KM SSE OF PORT OCONNOR TEXAS MAXIMUM SUSTAINED WINDS...85 MPH...140 KM/H PRESENT MOVEMENT...NW OR 315 DEGREES AT 10 MPH...17 KM/H MINIMUM CENTRAL PRESSURE...973 MB...28.74 INCHES WATCHES AND WARNINGS -------------------- CHANGES WITH THIS ADVISORY: None. SUMMARY OF WATCHES AND WARNINGS IN EFFECT: A Storm Surge Warning is in effect for... * Port Mansfield to High Island Texas A Storm Surge Watch is in effect for... * South of Port Mansfield Texas to the Mouth of the Rio Grande A Hurricane Warning is in effect for... * Port Mansfield to Sargent Texas A Tropical Storm Warning is in effect for... * North of Sargent to High Island Texas * South of Port Mansfield Texas to the Mouth of the Rio Grande A Hurricane Watch is in effect for... * South of Port Mansfield Texas to the Mouth of the Rio Grande A Tropical Storm Watch is in effect for... * South of the Mouth of the Rio Grande to Boca de Catan Mexico A Storm Surge Warning means there is a danger of life-threatening inundation, from rising water moving inland from the coastline, during the next 36 hours in the indicated locations. For a depiction of areas at risk, please see the National Weather Service Storm Surge Watch/Warning Graphic, available at hurricanes.gov. This is a life-threatening situation. Persons located within these areas should take all necessary actions to protect life and property from rising water and the potential for other dangerous conditions. Promptly follow evacuation and other instructions from local officials. 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 Storm Surge Watch means there is a possibility of life- threatening inundation, from rising water moving inland from the coastline, in the indicated locations during the next 48 hours. A Hurricane Watch means that hurricane conditions are possible within the watch area. In addition, interests in southwestern Louisiana should continue to monitor the progress of this system. 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 1000 PM CDT (0300 UTC), the center of Hurricane Harvey was located near latitude 25.2 North, longitude 94.6 West. Harvey is moving toward the northwest near 10 mph (17 km/h). This general motion is expected to continue with a decrease in forward speed during the next couple of days. On the forecast track, Harvey will approach the middle Texas coast on Friday and make landfall Friday night or early Saturday. Harvey is then likely to stall near or just inland of the middle Texas coast through the weekend. Reports from an Air Force Reserve Hurricane Hunter aircraft indicate that maximum sustained winds remain near 85 mph (140 km/h) with higher gusts. While Harvey has changed little in strength over the past several hours, strengthening is expected to resume later tonight, and Harvey is expected to become a major hurricane by Friday before it reaches the middle Texas coast. Hurricane-force winds extend outward up to 25 miles (35 km) from the center and tropical-storm-force winds extend outward up to 105 miles (165 km). The latest minimum central pressure reported by the Hurricane Hunter aircraft is 973 mb (28.74 inches). HAZARDS AFFECTING LAND ---------------------- RAINFALL: Harvey is expected to produce total rain accumulations of 15 to 25 inches and isolated maximum amounts of 35 inches over the middle and upper Texas coast through next Wednesday. During the same time period Harvey is expected to produce total rain accumulations of 7 to 15 inches in far south Texas and the Texas Hill Country eastward through central and southwest Louisiana, with accumulations of up to 7 inches extending into other parts of Texas and the lower Mississippi Valley. Rainfall from Harvey will cause devastating and life-threatening flooding. STORM SURGE: 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... N Entrance Padre Island Natl Seashore to Sargent...6 to 12 ft Sargent to Jamaica Beach...5 to 8 ft Port Mansfield to N Entrance Padre Island Natl Seashore...5 to 7 ft Jamaica Beach to High Island...2 to 4 ft Mouth of the Rio Grande to Port Mansfield...2 to 4 ft High Island to Morgan City...1 to 3 ft The deepest water will occur along the immediate coast near and to the northeast of the landfall location, 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 likely within the hurricane warning area late Friday and Friday night, with tropical storm conditions expected to first reach the coast in the hurricane warning area Friday. These conditions are likely to persist into Saturday in portions of the hurricane and tropical storm warning area. SURF: Swells generated by Harvey are likely to affect the Texas, Louisiana, and northeast Mexico coasts by Friday. These swells are likely to cause life-threatening surf and rip current conditions. Please consult products from your local weather office. TORNADOES: Isolated tornadoes are possible across portions of the middle and upper Texas coast on Friday. NEXT ADVISORY ------------- Next intermediate advisory at 100 AM CDT. Next complete advisory at 400 AM CDT. $$ Forecaster Beven

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Summary for Hurricane Harvey (AT4/AL092017)

2017-08-25 05:55:46| National Hurricane Center (Atlantic)

...HARVEY EXPECTED TO STRENGTHEN AS IT MOVES TOWARDS THE TEXAS COAST... ...LIFE-THREATENING AND DEVASTATING FLOODING EXPECTED NEAR THE COAST DUE TO HEAVY RAINFALL AND STORM SURGE... As of 10:00 PM CDT Thu Aug 24 the center of Harvey was located near 25.2, -94.6 with movement NW at 10 mph. The minimum central pressure was 973 mb with maximum sustained winds of about 85 mph.

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