Coastal Flood Advisory

* WHAT...Up to one half foot of inundation above ground level expected along shorelines and tidal waterways (7.2 to 7.4 feet Mean Lower Low Water at Charleston).

* WHERE...Coastal Colleton and Charleston Counties.

* WHEN...From 6 PM to 10 PM EDT this evening.

* IMPACTS...This could result in some roads becoming impassable.

* ADDITIONAL DETAILS...High tide will occur around 8 PM this evening at Charleston. Saltwater inundation will be possible 1 to 2 hours before and after high tide.