* WHAT...Up to one half foot of inundation above ground level in low lying areas due to tidal flooding.
* WHERE...Shoreline in the City of Alexandria and Arlington County.
* WHEN...Until 10 AM EDT Friday, especially around the time of high tide.
* IMPACTS...Water is expected to approach buildings near King Street and Union Street.
* ADDITIONAL DETAILS...Tides one and a half to two feet above normal. The next high tide at Alexandria is at 7:45 PM and 8:03 AM.