Upload
allie
View
32
Download
0
Embed Size (px)
DESCRIPTION
Slides for andrew. Storm surge from Hurricane Hugo was minimal, but enough to ground this ferry in Fajardo. Their ship has come in!. - PowerPoint PPT Presentation
Citation preview
Slides for andrew
Storm surge from Hurricane Hugo was minimal, but enough to ground this ferry in Fajardo.
Their ship has come in!
Sand washover along the Piones shoreline after Hurricane Hugo. An estimated 500,000 cubic meters of sand was washed ashore along this stretch (Bush, 1991).
Terminology
• Storm surge—water above normal astronomical tide
• High water level—maximum still water height reached during storm
• Storm tide—NOAA term for high water level
Storm Surge
• Storm physical characteristics• Movement of the storm• Shape of the shoreline
storm
surg
e
high water level
tide level
Observed (high water level) - Predicted (tides) = Storm Surge
Storm-surge levels along South Carolina coast (from FEMA).
Base flood elevation, including wave effects
100-year stillwater
Meansea level
A Zone
Wave height less than 3 feet
V Zone
Wave height greater than 3 feet
ShorelineSand dune
Wooded regionOverland wind fetch
Buildings
Limit oftidal floodingand waves
20 miles
20 miles
Eye at landfall Radius of maximum winds
Charleston
Hurricane Hugo (1989), South Carolina, Storm Surge Profile