National Hurricane Center:  The latest on  #Sally and the impact she will have on the Gulf Coast

 

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Tropical Weather Outlook
NWS National Hurricane Center Miami FL
200 PM EDT Sat Sep 12 2020

For the North Atlantic...Caribbean Sea and the Gulf of Mexico:

The National Hurricane Center is issuing advisories on Tropical 
Storm Paulette and Tropical Depression Rene, both located over the 
central Atlantic Ocean.  The National Hurricane Center is also 
issuing advisories on recently upgraded Tropical Storm Sally, 
located near southern Florida.

1. A surface trough over the north-central Gulf of Mexico is producing 
disorganized showers and a few thunderstorms.  Some slow 
development of this system is possible while it moves westward and 
then southwestward over the northern and western Gulf of Mexico 
through the middle of next week.
* Formation chance through 48 hours...low...20 percent. 
* Formation chance through 5 days...low...30 percent.

2. Satellite imagery and satellite-derived wind data indicate that the 
area of low pressure located several hundred miles west-southwest of 
the Cabo Verde Islands has become better defined. The associated 
shower and thunderstorm activity is also becoming better organized. 
If this development trend continues, then a tropical depression 
will likely form later today or tonight. The system is expected to 
move westward then northwestward across the eastern and central 
tropical Atlantic over the next several days.
* Formation chance through 48 hours...high...90 percent. 
* Formation chance through 5 days...high...90 percent.

3. Showers and thunderstorms located near the Cabo Verde Islands are 
associated with a broad area of low pressure that has developed 
along a tropical wave.  Environmental conditions support some 
additional development during the next few days, and a tropical 
depression could form over the far eastern tropical Atlantic early 
next week while the system moves slowly west-northwestward. By 
mid-week, upper-level winds could become less conducive for 
development.
* Formation chance through 48 hours...medium...40 percent. 
* Formation chance through 5 days...medium...60 percent.

Public Advisories on Sally are issued under WMO header WTNT34 KNHC 
and under AWIPS header MIATCPAT4.  Forecast/Advisories on Sally 
are issued under WMO header WTNT24 KNHC and under AWIPS header 
MIATCMAT4.