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Tropical Storm Barry Public Advisory Number 8
2019-07-12 10:34:42| National Hurricane Center (Atlantic)
Issued at 400 AM CDT Fri Jul 12 2019 000 WTNT32 KNHC 120834 TCPAT2 BULLETIN Tropical Storm Barry Advisory Number 8 NWS National Hurricane Center Miami FL AL022019 400 AM CDT Fri Jul 12 2019 ...BARRY HEADING TOWARD THE LOUISIANA COAST... ...DANGEROUS STORM SURGE, HEAVY RAINS, AND WINDS CONDITIONS EXPECTED ACROSS THE NORTH-CENTRAL GULF COAST... SUMMARY OF 400 AM CDT...0900 UTC...INFORMATION ---------------------------------------------- LOCATION...28.1N 90.2W ABOUT 95 MI...155 KM SW OF THE MOUTH OF THE MISSISSIPPI RIVER ABOUT 125 MI...205 KM SSE OF MORGAN CITY LOUISIANA MAXIMUM SUSTAINED WINDS...50 MPH...85 KM/H PRESENT MOVEMENT...WNW OR 295 DEGREES AT 5 MPH...7 KM/H MINIMUM CENTRAL PRESSURE...1000 MB...29.53 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 Shell Beach A Storm Surge Watch is in effect for... * Shell Beach to the Mississippi/Alabama border * Lake Pontchartrain 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. Interests elsewhere along the Gulf Coast from the Upper Texas Coast to the Florida Panhandle should 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 OUTLOOK ---------------------- At 400 AM CDT (0900 UTC), the broad circulation center of Tropical Storm Barry was located near latitude 28.1 North, longitude 90.2 West. Barry is moving toward the west-northwest near 5 mph (7 km/h). A track toward the northwest is expected to begin later today, followed by a turn toward the north on Saturday. On the forecast track, the center of Barry will be near or over the central or southeastern coast of Louisiana tonight or Saturday, and then move inland into the Lower Mississippi Valley on Sunday. Data from an Air Force Reserve reconnaissance aircraft, a few hours ago, indicate that the maximum sustained winds remain near 50 mph (85 km/h) with higher gusts. Some strengthening is expected during the next day or so, and Barry could become a hurricane tonight or early Saturday when the center is near the Louisiana coast. Weakening is expected after Barry moves inland. Tropical-storm-force winds extend outward up to 175 miles (280 km) to the east of the center. The estimated minimum central pressure estimated from a surface observations nearby was 1000 mb (29.53 inches). 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... Mouth of the Atchafalaya River to Shell Beach...3 to 6 ft Shell Beach to the Mississippi/Alabama border...2 to 4 ft Intracoastal City to the Mouth of the Atchafalaya River...3 to 5 ft Lake Pontchartrain...2 to 4 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 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. Over the remainder of the Lower Mississippi Valley, total rain accumulations of 4 to 8 inches are expected, with isolated maximum amounts of 12 inches. WIND: Hurricane conditions are expected in the Hurricane Warning area tonight or Saturday morning, with tropical storm conditions expected to begin later today. Hurricane conditions are possible within the Hurricane Watch area by tonight or Saturday morning. Tropical Storm conditions are expected to spread across the Tropical Storm Warning area starting early today, with tropical storm conditions possible in the Tropical Storm Watch area by tonight or Saturday. TORNADOES: A few tornadoes are possible today and tonight across southeast Louisiana, far southern Mississippi, and the Alabama coast. NEXT ADVISORY ------------- Next intermediate advisory at 700 AM CDT. Next complete advisory at 1000 AM CDT. $$ Forecaster Avila
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