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Tropical Storm HARVEY
ZCZC MIATCPAT4 ALL TTAA00 KNHC DDHHMM BULLETIN Tropical Storm Harvey Intermediate Advisory Number 33A NWS National Hurricane Center Miami FL AL092017 100 PM CDT Mon Aug 28 2017 ...CENTER OF HARVEY DRIFTING NEAR THE TEXAS COAST... ...LIFE-THREATENING FLOODING CONTINUES OVER SOUTHEASTERN TEXAS... ...DO NOT ATTEMPT TO TRAVEL IN THE AFFECTED AREAS IF YOU ARE IN A SAFE PLACE AND DO NOT DRIVE INTO FLOODED ROADWAYS... SUMMARY OF 100 PM CDT...1800 UTC...INFORMATION ---------------------------------------------- LOCATION...28.6N 95.8W ABOUT 40 MI...65 KM ENE OF PORT OCONNOR TEXAS MAXIMUM SUSTAINED WINDS...40 MPH...65 KM/H PRESENT MOVEMENT...ESE OR 115 DEGREES AT 3 MPH...5 KM/H MINIMUM CENTRAL PRESSURE...998 MB...29.47 INCHES WATCHES AND WARNINGS -------------------- CHANGES WITH THIS ADVISORY: None. SUMMARY OF WATCHES AND WARNINGS IN EFFECT: A Tropical Storm Warning is in effect for... * Mesquite Bay to Cameron A Tropical Storm Watch is in effect for... * East of Cameron to Intracoastal City Catastrophic and life-threatening flooding continues in southeastern Texas. Please see warnings and other products issued by your local National Weather Service office for additional information on this life-threatening situation. 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 elsewhere along the middle and upper Texas coast and in southern Louisiana should continue to monitor the progress of Harvey. 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 PM CDT (1800 UTC), the center of Tropical Storm Harvey was located near latitude 28.6 North, longitude 95.8 West. Harvey is currently drifting erratically toward the east-southeast, and a slow motion toward the southeast is expected later today through tonight. A gradual turn toward the northeast and a continued slow forward speed are expected Tuesday and Tuesday night. On the forecast track, the center of Harvey is expected to be just offshore of the middle and upper coasts of Texas through Tuesday night. Maximum sustained winds are near 40 mph (65 km/h) with higher gusts. Some slow intensification is possible during the next 48 hours. Tropical-storm-force winds extend outward up to 175 miles (280 km) mainly to the east of the center. George Bush Intercontinental Airport in Houston recently reported a wind gust of 46 mph (74 km/h). The minimum central pressure estimated from surface observations along the Texas coast is 998 mb (29.47 inches). HAZARDS AFFECTING LAND ---------------------- RAINFALL: Harvey is expected to produce additional rainfall accumulations of 15 to 25 inches through Friday over the upper Texas coast and into southwestern Louisiana. Isolated storm totals may reach 50 inches over the upper Texas coast, including the Houston/ Galveston metropolitan area. These rains are currently producing catastrophic and life-threatening flooding over large portions of southeastern Texas. DO NOT ATTEMPT TO TRAVEL IN THE AFFECTED AREA IF YOU ARE IN A SAFE PLACE. DO NOT DRIVE INTO FLOODED ROADWAYS. Please see warnings and products issued by your local National Weather Service office for additional information on this life-threatening situation. Elsewhere, Harvey is expected to produce total rain accumulations of 5 to 15 inches farther south into the middle Texas coast and farther east across south-central Louisiana. Rainfall amounts of 5 to 10 inches are expected in southeast Louisiana. A list of rainfall observations compiled by the NOAA Weather Prediction Center can be found at: www.wpc.ncep.noaa.gov/discussions/nfdscc1.html 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 Morgan City including Galveston Bay...1 to 3 ft The deepest water will occur along the immediate coast near the area of onshore winds. 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: Tropical storm conditions are occurring in rain bands well to the east of the center of Harvey, including portions of the tropical storm warning area along the coast. Tropical storm conditions are likely to persist in areas of onshore winds within the warning area during the next couple of days, and are possible in the watch area by Wednesday. SURF: Swells generated by Harvey are affecting the coasts of Texas and Louisiana. These swells are likely to cause life-threatening surf and rip current conditions. Please consult products from your local weather office. TORNADOES: A few tornadoes are possible today and tonight from extreme southeast Texas across parts of southern Louisiana. NEXT ADVISORY ------------- Next complete advisory at 400 PM CDT. $$ Forecaster Beven NNNN