Port Alert
Charleston, SC
August 07, 2025
Notices
Post-Tropical Cyclone Dexter Advisory Number 15
NWS National Hurricane Center Miami FL AL042025
1100 AM AST Thu Aug 07 2025
...DEXTER BECOMES A STORM-FORCE EXTRATROPICAL LOW OVER THE NORTH
ATLANTIC......THIS IS THE FINAL NHC ADVISORY...
SUMMARY OF 1100 AM AST...1500 UTC...INFORMATION
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LOCATION...41.4N 50.4W
ABOUT 390 MI...625 KM SSE OF CAPE RACE NEWFOUNDLAND
MAXIMUM SUSTAINED WINDS...60 MPH...95 KM/H
PRESENT MOVEMENT...ENE OR 70 DEGREES AT 17 MPH...28 KM/H
MINIMUM CENTRAL PRESSURE...998 MB...29.47 INCHES
WATCHES AND WARNINGS
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There are no coastal watches or warnings in effect.
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200 PM EDT Thu Aug 7 2025
For the North Atlantic...Caribbean Sea and the Gulf of America:
Active Systems:
The National Hurricane Center has issued the final advisory on
Post-Tropical Cyclone Dexter, located over the north-central
Atlantic Ocean.
1. Off the Southeastern United States:
A non-tropical area of low pressure is expected to form over the
next day or two, a few hundred miles offshore of North Carolina.
Some tropical or subtropical development is possible this weekend
while the system moves northeastward over the warm waters of the
Gulf Stream, off the east coast of the United States. By early next
week, the low is expected to reach colder water and more hostile
conditions, ending its chance for tropical or subtropical
development.
* Formation chance through 48 hours...low...10 percent.
* Formation chance through 7 days...low...20 percent.
2. Central Tropical Atlantic (AL96):
A tropical wave over the central tropical Atlantic is producing
disorganized shower activity. Environmental conditions are forecast
to become more conducive for gradual development in a few days, and
a tropical depression could form late this weekend or early next
week while the system moves west-northwestward to northwestward
across the central tropical and subtropical Atlantic.
* Formation chance through 48 hours...low...10 percent.
* Formation chance through 7 days...medium...60 percent.
