The National Hurricane Center is issuing advisories on Tropical Depression Sally, located inland over southeastern Alabama, on Hurricane Teddy, located over the central tropical Atlantic, and on Tropical Storm Vicky, located over the eastern tropical Atlantic.
Thunderstorm activity has continued to increase and become better organized this morning in association with a well-defined low pressure system located over the southwestern Gulf of Mexico. Upper-level winds are gradually becoming more conducive for development and, if this recent development trend continues, a tropical depression or a tropical storm could form later today. The low is expected to meander over the southwestern Gulf of Mexico for the next day or so before moving slowly northward to northeastward on Friday and Saturday. An Air Force Reserve reconnaissance aircraft is scheduled to investigate the disturbance this afternoon.
* Formation chance through 48 hours...high...90 percent.
* Formation chance through 5 days...high...90 percent.
An elongated area of low pressure located a few hundred miles south-southwest of the Cabo Verde Islands is producing disorganized shower and thunderstorm activity. Environmental conditions are expected to be conducive for development during the next few days, and a tropical depression could form before upper-level winds become less favorable over the weekend. The low is forecast to move west-northwestward at 10 to 15 mph during the next several days.
* Formation chance through 48 hours...medium...40 percent.
* Formation chance through 5 days...medium...60 percent.
A non-tropical area of low pressure is located over the far northeastern Atlantic Ocean a few hundred miles east-northeast of the Azores. This system is forecast to move east-southeastward and then northeastward at about 10 mph over the next day or two, and its chances of acquiring some subtropical characteristics before it reaches the coast of Portugal late Friday appear to be decreasing. For more information on this system, see High Seas Forecasts issued by Meteo France.
* Formation chance through 48 hours...low...10 percent.
* Formation chance through 5 days...low...10 percent.