Tropical Cyclone Report. hurricane Dennis Storm Surge................
Posted by
chucky7777 on 7/29/2011, 3:01 am
Dennis produced a storm surge of 6-7 ft above normal tide levels on Santa Rosa Island
near where the center made landfall. This surge overwashed Santa Rosa Island near and west of
Navarre Beach. A storm surge of 6-9 ft above normal tide levels occurred in Apalachee Bay,
Florida, which inundated parts of the town of St. Marks and other nearby areas (Figure 4). This
surge was higher than currently known wind reports would support for that area, and roughly 3.5
ft higher that the surge forecast from the Sea, Lake, and Overland Surge from Hurricanes
(SLOSH) model. This surge was likely triggered by an oceanic trapped shelf wave that
propagated northward along the Florida west coast. Modeling results from the Center for Ocean-
Atmospheric Prediction Studies at Florida State University suggest that although Dennis was
roughly 150 n mi west of the area, this remotely generated sea-level rise added 3-4 ft to the surge
in and around Apalachee Bay. (Reference: Personal communication with James O'Brien, Steve
Morey, and Dimitri Dukhovskoy, COAPS, FSU.) A storm surge of 4-6 ft occurred elsewhere in
the Florida Panhandle. Storm surges of 3-5 ft above normal tide levels occurred elsewhere along
the Florida west coast, in the Florida Keys, and along the coast of Alabama. Tides of 2-4 ft
above normal were reported along the coasts of Mississippi and southeastern Louisiana. Storm
surge data from Cuba are currently not available........PDF Alert..http://www.nhc.noaa.gov/pdf/TCR-AL042005_Dennis.pdf |
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LawKat,
7/28/2011, 4:34 pm Post A Reply
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