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Hurricane Harvey Update Statement

2017-08-26 08:53:18| National Hurricane Center (Atlantic)

Issued at 200 AM CDT Sat Aug 26 2017 000 WTNT64 KNHC 260653 TCUAT4 Hurricane Harvey Tropical Cyclone Update NWS National Hurricane Center Miami FL AL092017 200 AM CDT Sat Aug 26 2017 ...2 AM CDT POSITION AND INTENSITY UPDATE... ...CATEGORY 3 HURRICANE HARVEY CONTINUES TO PRODUCE LIFE-THREATENING STORM SURGE... A NOAA tide gauge at Port Lavaca, Texas, recently measured a water level of 6.3 feet above Mean Higher High Water. Another NOAA tide gauge at Seadrift, Texas, recently measured a water level of 4.0 feet above Mean Higher High Water. SUMMARY OF 200 AM CDT...0700 UTC...INFORMATION ---------------------------------------------- LOCATION...28.3N 97.1W ABOUT 15 MI...25 KM NNW OF ROCKPORT TEXAS ABOUT 40 MI...70 KM SSW OF VICTORIA TEXAS MAXIMUM SUSTAINED WINDS...115 MPH...185 KM/H PRESENT MOVEMENT...NW OR 325 DEGREES AT 6 MPH...9 KM/H MINIMUM CENTRAL PRESSURE...950 MB...28.05 INCHES $$ Forecaster Zelinsky/Cangialosi

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Hurricane Harvey Public Advisory Number 23A

2017-08-26 07:47:53| National Hurricane Center (Atlantic)

Issued at 100 AM CDT Sat Aug 26 2017 000 WTNT34 KNHC 260547 TCPAT4 BULLETIN Hurricane Harvey Intermediate Advisory Number 23A NWS National Hurricane Center Miami FL AL092017 100 AM CDT Sat Aug 26 2017 ...HARVEY MAKES A SECOND LANDFALL ON THE NORTHEASTERN SHORE OF COPANO BAY... SUMMARY OF 100 AM CDT...0600 UTC...INFORMATION ---------------------------------------------- LOCATION...28.2N 97.0W ABOUT 5 MI...10 KM N OF ROCKPORT TEXAS ABOUT 45 MI...75 KM S OF VICTORIA TEXAS MAXIMUM SUSTAINED WINDS...125 MPH...205 KM/H PRESENT MOVEMENT...NW OR 325 DEGREES AT 6 MPH...9 KM/H MINIMUM CENTRAL PRESSURE...942 MB...27.82 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 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 A Storm Surge Warning means there is a danger of life-threatening inundation from rising water moving inland from the coastline 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. A Hurricane Warning means that hurricane conditions are expected somewhere within the warning area. Preparations to protect life and property should already be complete. Interests in southwestern Louisiana should continue to monitor the progress of this system. For storm information specific to your area, including possible inland watches and warnings, please monitor products issued by your local National Weather Service forecast office. DISCUSSION AND 48-HOUR OUTLOOK ------------------------------ At 100 AM CDT (0600 UTC), the eye of Hurricane Harvey was located near latitude 28.2 North, longitude 97.0 West. Harvey has made a second landfall along the northeastern shore of Copano Bay, Texas. Harvey is moving toward the northwest near 6 mph (9 km/h). The hurricane is expected to slow down further during the next day or so, and it will meander over southeastern Texas through the middle of next week. Maximum sustained winds have decreased to near 125 mph (205 km/h) with higher gusts. Harvey is a category 3 hurricane on the Saffir-Simpson Hurricane Wind Scale. Additional weakening is forecast during the next 48 hours while the center of Harvey is over southeastern Texas. 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). A Texas Coastal Ocean Observing Network station at the Aransas Wildlife Refuge recently measured sustained hurricane- force winds of 74 mph (119 km/h) and a wind gust to 98 mph (157 km/h). A National Ocean Service tide gauge at Port Lavaca, Texas, recently reported a water level of 5.9 ft above Mean Higher High Water. The estimated minimum central pressure is 942 mb (27.82 inches). HAZARDS AFFECTING LAND ---------------------- RAINFALL: Harvey is expected to produce total rain accumulations of 15 to 30 inches and isolated maximum amounts of 40 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 5 to 15 inches in far south Texas and the Texas Hill Country over through southwest and central Louisiana. Rainfall of this magnitude will cause catastrophic 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... Port Aransas to Port O'Connor...9 to 13 ft Port O'Connor to Sargent...6 to 9 ft N Entrance Padre Island Natl Seashore to Port Aransas...5 to 8 ft Sargent to Jamaica Beach...4 to 6 ft Port Mansfield to N Entrance Padre Island Natl Seashore...3 to 5 ft Jamaica Beach to High Island...2 to 4 ft Mouth of the Rio Grande to Port Mansfield...1 to 3 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 occuring along portions of the middle Texas coast within the hurricane warning area and are spreading inland as the eye continues to move farther onshore. Tropical storm conditions are occurring in other portions of the hurricane and tropical storm warning areas. Tropical storm conditions are likely to persist along portions of the coast through at least Sunday. SURF: Swells generated by Harvey are affecting the Texas, Louisiana, and northeast Mexico coasts. These swells are likely to cause life-threatening surf and rip current conditions. Please consult products from your local weather office. TORNADOES: Tornadoes are possible through Saturday near the middle and upper Texas coast into far southwest Louisiana. NEXT ADVISORY ------------- Next complete advisory at 400 AM CDT. $$ Forecaster Berg

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Summary for Hurricane Harvey (AT4/AL092017)

2017-08-26 06:58:23| National Hurricane Center (Atlantic)

...12 AM CDT POSITION UPDATE... ...DANGEROUS HARVEY NEAR THE MOUTH OF COPANO BAY... As of 12:00 AM CDT Sat Aug 26 the center of Harvey was located near 28.1, -97.0 with movement NW at 7 mph. The minimum central pressure was 940 mb with maximum sustained winds of about 130 mph.

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Hurricane Harvey Update Statement

2017-08-26 06:58:23| National Hurricane Center (Atlantic)

Issued at 1200 AM CDT Sat Aug 26 2017 000 WTNT64 KNHC 260458 TCUAT4 Hurricane Harvey Tropical Cyclone Update NWS National Hurricane Center Miami FL AL092017 1200 AM CDT Sat Aug 26 2017 ...12 AM CDT POSITION UPDATE... ...DANGEROUS HARVEY NEAR THE MOUTH OF COPANO BAY... A station at Copano Bay, Texas, recently reported a sustained wind of 74 mph (118 km/h) with a gust to 110 mph (178 km/h) in the northern eyewall. A station at Aransas Wildlife Refuge run by the Texas Coastal Observing Network recently reported a sustained wind of 78 mph (126 km/h) with a gust to 105 mph (170 km/h). A NOAA tide gauge at Port Lavaca, Texas, recently measured a water level of 5.6 feet above Mean Higher High Water. A station at Rockport, Texas, reported a minimum pressure of 942 mb (27.81 in.) in the eye. SUMMARY OF 1200 AM CDT...0500 UTC...INFORMATION ---------------------------------------------- LOCATION...28.1N 97.0W ABOUT 5 MI...10 KM NNE OF ROCKPORT TEXAS ABOUT 40 MI...70 KM WSW OF PORT OCONNOR TEXAS MAXIMUM SUSTAINED WINDS...130 MPH...215 KM/H PRESENT MOVEMENT...NW OR 325 DEGREES AT 7 MPH...11 KM/H MINIMUM CENTRAL PRESSURE...940 MB...27.76 INCHES $$ Forecaster Cangialosi/Zelinsky

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