Coastal Flood Advisory

* WHAT...Up to one half foot of inundation above ground level expected in low-lying areas near shorelines and tidal waterways.

* WHERE...In Delaware, New Castle. In New Jersey, Salem.

* WHEN...From midnight tonight to 4 AM EDT Thursday.

* IMPACTS...At this level, flooding begins on the most vulnerable roads along tidal waterways. Some partial or full road closures are possible.