As of this am there are two systems of concern to the U.S. mainland:
Invest 90L has been upgraded to TD status. It is now Tropical Depression Number 4. The NHC is issuing advisories. Here is the first - Public Advisory No. 1:
The second system"of concern" relates to the Gulf of Mexico. From the NHC Tropical Weather Discussion:
SATELLITE IMAGES AND SURFACE OBSERVATIONS INDICATE THAT A BROAD LOW PRESSURE AREA HAS
FORMED IN THE SOUTHEASTERN GULF OF MEXICO ABOUT 90 MILES NORTH-NORTHEAST OF
CANCUN MEXICO. UPPER-LEVEL WINDS ARE BECOMING MORE FAVORABLE FOR DEVELOPMENT OF THIS
SYSTEM...AND A TROPICAL DEPRESSION COULD FORM LATER TODAY OR TOMORROW AS THE LOW MOVES
TO THE WEST-NORTHWEST AT 10 TO 15 MPH. INTERESTS IN THE WESTERN GULF OF MEXICO SHOULD
MONITOR THE PROGRESS OF THIS SYSTEM. AN AIR FORCE RESERVE RECONNASSIANCE PLANE IS
SCHEDULED TO INVESTIGATE THIS SYSTEM TOMORROW...IF NECESSARY.
See satellite loop here.