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Tropical Storm Barry Public Advisory Number 12A

2019-07-13 13:52:28| National Hurricane Center (Atlantic)

Issued at 700 AM CDT Sat Jul 13 2019 000 WTNT32 KNHC 131152 TCPAT2 BULLETIN Tropical Storm Barry Intermediate Advisory Number 12A NWS National Hurricane Center Miami FL AL022019 700 AM CDT Sat Jul 13 2019 ...BARRY GETS A LITTLE STRONGER AS IT NEARS THE LOUISIANA COAST... ...DANGEROUS STORM SURGE, HEAVY RAINS, AND WIND CONDITIONS EXPECTED ACROSS THE NORTH-CENTRAL GULF COAST... SUMMARY OF 700 AM CDT...1200 UTC...INFORMATION ---------------------------------------------- LOCATION...29.3N 91.9W ABOUT 50 MI...80 KM WSW OF MORGAN CITY LOUISIANA ABOUT 60 MI...95 KM S OF LAFAYETTE LOUISIANA MAXIMUM SUSTAINED WINDS...70 MPH...115 KM/H PRESENT MOVEMENT...NW OR 305 DEGREES AT 5 MPH...7 KM/H MINIMUM CENTRAL PRESSURE...991 MB...29.26 INCHES WATCHES AND WARNINGS -------------------- CHANGES WITH THIS ADVISORY... None. SUMMARY OF WATCHES AND WARNINGS IN EFFECT... A Hurricane Warning is in effect for... * Intracoastal City to Grand Isle A Tropical Storm Warning is in effect for... * Mouth of the Pearl River to Grand Isle * Lake Pontchartrain and Lake Maurepas including metropolitan New Orleans * Intracoastal City to Cameron A Storm Surge Warning is in effect for... * Intracoastal City to Biloxi * Lake Pontchartrain A Storm Surge Watch is in effect for... * Biloxi to the Mississippi/Alabama border A Hurricane Watch is in effect for... * Mouth of the Mississippi River to Grand Isle * Intracoastal City to Cameron A Tropical Storm Watch is in effect for... * East of the Mouth of the Pearl River to the Mississippi/Alabama border 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 Tropical Storm Warning means that tropical storm conditions are expected somewhere within the warning area within 36 hours. 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 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. 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 Watch means that tropical storm conditions are possible within the watch area generally within 48 hours. 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 OUTLOOK ---------------------- At 700 AM CDT (1200 UTC), the center of Tropical Storm Barry was located near latitude 29.3 North, longitude 91.9 West. Barry is moving toward the northwest near 5 mph (7 km/h), and a turn toward the north is expected tonight or Sunday. On the forecast track, the center of Barry will make landfall along the south-central Louisiana coast during the next several hours. After landfall, Barry is expected to move generally northward through the Mississippi Valley through Sunday night. Maximum sustained winds have increased to near near 70 mph (115 km/h) with higher gusts. Additional strengthening is forecast before landfall, and Barry is expected to be a hurricane when the center reaches the Louisiana coast during the next several hours. Steady weakening is expected after Barry moves inland. Tropical-storm-force winds extend outward up to 175 miles (280 km) from the center. The National Ocean Service station at Eugene Island, Louisiana recently reported sustained winds of 71 mph and a wind gust of 85 mph. The estimated minimum central pressure based on surface observations is 991 mb (29.26 inches). An Air Force Reserve Hurricane Hunter aircraft is currently enroute to investigate Barry. HAZARDS AFFECTING LAND ---------------------- Key Messages for Barry can be found in the Tropical Cyclone Discussion under AWIPS header MIATCDAT2 and WMO header WTNT42 KNHC. 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 could reach the following heights above ground somewhere in the indicated areas if the peak surge occurs at the time of high tide... Intracoastal City to Shell Beach...3 to 6 ft Shell Beach to Biloxi MS...3 to 5 ft Lake Pontchartrain...3 to 5 ft Biloxi MS to the Mississippi/Alabama border...2 to 4 ft Lake Maurepas...1 to 3 ft 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. RAINFALL: Barry is expected to produce total rain accumulations of 10 to 20 inches over south-central and southeast Louisiana and southwest Mississippi, with isolated maximum amounts of 25 inches. These rains are expected to lead to dangerous, life threatening flooding over portions of the central Gulf Coast into the Lower Mississippi Valley beginning as early as later this morning. Across the remainder of the Lower Mississippi Valley, total rain accumulations of 4 to 8 inches are expected, with isolated maximum amounts of 12 inches. By early next week, Barry is expected to produce rainfall accumulations of 4 to 8 inches across western portions of the Tennessee Valley. WIND: Hurricane conditions are expected in the Hurricane Warning area later this morning, with tropical storm conditions currently spreading across the area. Hurricane conditions are possible within the Hurricane Watch area later this morning. Tropical storm conditions are occurring across the Tropical Storm Warning area in southeastern Louisiana at this time. Tropical storm conditions are possible in the Tropical Storm Watch area later today. Wind gusts to tropical-storm force in squalls are possible along portions of the coasts of Alabama and the western Florida Panhandle through tonight. TORNADOES: A few tornadoes are possible through tonight across the southeast Louisiana, southern Mississippi, and southern Alabama. NEXT ADVISORY ------------- Next complete advisory at 1000 AM CDT. $$ Forecaster Beven

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