Here is the latest information from the National Hurricane Center (released at 4:00 pm CT):
Potential Tropical Cyclone Two Advisory Number 2
NWS National Hurricane Center Miami FL
400 PM CDT Wed Jul 10 2019
HURRICANE WATCH ISSUED FOR PORTIONS OF THE SOUTHERN COAST OF LOUISIANA
HEAVY RAINS EXPECTED TO CONTINUE ACROSS THE CENTRAL GULF COAST
SUMMARY OF 400 PM CDT…2100 UTC…INFORMATION
ABOUT 125 MI…200 KM ESE OF THE MOUTH OF THE MISSISSIPPI RIVER
ABOUT 255 MI…410 KM ESE OF MORGAN CITY LOUISIANA
MAXIMUM SUSTAINED WINDS…30 MPH…45 KM/H
PRESENT MOVEMENT…WSW OR 245 DEGREES AT 8 MPH…13 KM/H
MINIMUM CENTRAL PRESSURE…1011 MB…29.86 INCHES
WATCHES AND WARNINGS
CHANGES WITH THIS ADVISORY…
The Storm Surge Watch has been extended westward to Intracoastal City Louisiana.
A Hurricane Watch has been issued from the Mouth of the Mississippi River westward to Cameron Louisiana.
A Tropical Storm Watch has been issued from north of the Mouth of the Mississippi River to the Mouth of the Pearl River.
SUMMARY OF WATCHES AND WARNINGS IN EFFECT…
A Storm Surge Watch is in effect for…
* Mouth of the Pearl River to Intracoastal City
A Hurricane Watch is in effect for…
* Mouth of the Mississippi River to Cameron
A Tropical Storm Watch is in effect for…
* Mouth of the Mississippi River northward to the Mouth of the Pearl River
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 U.S. Gulf Coast from the Upper Texas Coast to the Florida Panhandle should monitor the progress of this system.
DISCUSSION AND OUTLOOK
At 400 PM CDT (2100 UTC), the broad disturbance was centered near latitude 28.1 North, longitude 87.4 West. The system is moving toward the west-southwest near 8 mph (13 km/h). A motion toward the west-southwest or southwest is expected through Thursday morning, followed by a turn toward the west late Thursday and a turn toward the west-northwest on Friday. By early Saturday, a northwestward motion is expected. On the forecast track, the system is expected to approach the central U.S. Gulf Coast this weekend.
Reports from an Air Force Reserve reconnaissance aircraft indicate that maximum sustained winds are near 30 mph (45 km/h) with higher gusts. Strengthening is forecast during the next 72 hours, and the disturbance is forecast to become a tropical depression Thursday morning, a tropical storm Thursday night, and a hurricane on Friday.
Shower and thunderstorm activity has gradually been increasing in coverage and organization, and the low is likely to become a tropical depression or a tropical storm in the next day or so.
*Formation chance through 48 hours…high…near 100 percent
*Formation chance through 5 days…high…near 100 percent
The estimated minimum central pressure based on data from the aircraft and surface observations is 1011 mb (29.86 inches).
HAZARDS AFFECTING LAND
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 Pearl River to Intracoastal City…3 to 6 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: The system is expected to produce total additional rain accumulations of 6 to 12 inches near and inland of the central Gulf Coast through early next week, with isolated maximum rainfall amounts of 18 inches.
Rainfall amounts exceeding 6 to 9 inches have already occurred across portions of the New Orleans metropolitan area today, which has resulted in flooding.
WIND: Hurricane conditions are possible within the Hurricane Watch area by Friday night, with tropical storm conditions possible by early Friday.