Coastal Flood — Lower St. Bernard, Louisiana

2015-10-25 to 2015-10-26 · Lower St. Bernard, Louisiana

Event narrative

Tides of 2 to 3 feet above normal tide levels resulted in moderate flooding of low lying terrain and roadways outside of the hurricane protection levees.

Wider weather episode

Low pressure moved from south Texas to southwest Louisiana during the day and night of the 25th. A warm front associated with the low pressure provided the focus for isolated thunderstorms that produced two tornadoes over southeast Louisiana. In addition, persistent strong southeast and winds generated by a strong pressure gradient produced several reports of minor wind damage primarily to trees. Strong onshore wind caused tides to be 1 to 3 feet above normal, but locally higher. Minor to moderate coastal flooding occurred in low lying terrain in coastal areas and near tidal lakes. Very heavy rain also occurred with this system with several locations receiving as much as ten inches of rain over a 48 hour period. However, due to drought conditions prior to this storm, flooding was much less than usual.

Source: NOAA Storm Events Database, event_id 604594. Narrative written by the NWS forecast office that issued the report.