Hurricane Isaac's storm surge reached 11.02 feet at 11:36PM CDT this evening at Shell Beach, LA. Water levels were rising during the afternoon and evening as strong winds howled out of the north-northeast and northeast. In the first hours of Wednesday, water levels at Shell Beach dropped slightly, but remained close to 11 feet.
SCIPP/ SURGEDAT has identified peak surge levels for 15 tropical cyclones at Shell Beach. Isaac's 11.02-foot surge moved it into fifth place all time, surpassing water levels produced by Flossy (1956), Gustav (2008), Betsy (1965) and Ike (2008). Isaac now joins some noteworthy company for surge events in this area, and the maximum level during Isaac is just a fraction of an inch lower than Camille's surge height in this area.
Top 10 surge heights for Shell Beach, LA in the SURGEDAT database:
Rank Storm Year Max Water Level (ft)
1 Katrina 2005 18.7 (storm surge)
2 Unnamed 1915 11.6 (storm tide)
3 Unnamed 1947 11.2 (storm tide)
4 Camille 1969 11.06 (storm tide)
5 Isaac 2012 11.02 (storm surge)
6 Flossy 1956 10.9 (storm tide)
7 Gustav 2008 9.53 (storm surge)
8 Betsy 1965 9.34 (storm tide)
9 Ike 2008 7.51 (storm surge)
10 Unnamed 1901 6.7 (storm tide)