If travel is required, allow extra time as some roads may be closed. Do not drive around barricades or through water of unknown depth. Take the necessary actions to protect flood-prone property.

* WHAT...Up to one half foot of inundation above ground level in low lying areas due to tidal flooding. * WHERE...Shoreline in the District of Columbia, Arlington County, and the City of Alexandria. * WHEN...Until 8 AM EDT this morning, especially around the time of high tide. * IMPACTS...Shoreline inundation is expected along portions of the seawall adjacent to Ohio Drive and the Hains Point Loop Road and near the Tidal Basin. * ADDITIONAL DETAILS...Tides one to one and a half feet above normal. The next high tide at Alexandria is at 6:02 PM and 6:27 AM. The next high tide at Washington Channel is at 5:44 PM and 6:09 AM.