COLLIER
COUNTY
EMERGENCY
MANAGEMENT
Storm
Surge and 'SLOSH' |
![]() Storm Surge: An abnormal rise in sea level accompanying a hurricane or other intense storm, and whose height is the difference between the observed level of the sea surface and the level that would have occurred in the absence of the cyclone. Storm surge is usually estimated by subtracting the normal or astronomic high tide from the observed storm tide. Storm Tide: The actual level of sea water resulting from
the astronomic tide combined with the storm surge. To
see the current tide timetable for a particular area, go to this site.
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FEMA Hurricane Pages | NHC Storm Surge Information
Interactive,
street level surge
and evacuation information
(Read the disclaimer information carefully!)
Disaster planning Calendar
Collier County Storm Surge Map
Based on the National Hurricane Center's
Sea, Lake and Overland Surge from Hurricanes (SLOSH) model
SLOSH MAP of the entire SW Florida region
It also does not show water depths, which vary depending on the storm strength, site elevation and distance from the coast. In a worst case category three for example, the water would be several feet deep at the category 2-3 boundary, but the ground would only be wet at the category 3-4/5 boundary.
Detailed (street level) surge atlas maps are available at the County EOC. Note that Golden Gate city (indicated by the G on the map) is located entirely within the category three area, meaning it would take a land falling category three hurricane, just north of Naples to push the Gulf of Mexico into that area. A storm making landfall near Everglades City (indicated by the E) would not generate the worst case surge to the north of landfall. In fact a storm making landfall in Gullivan Bay would generate a strong surge at Everglades City (E), but could push the water out at Marco Island (M).
In recorded history, we know of no storm which has flooded the red (category 4/5) area, however that remains a possibility.
For more more information about your risk from storm surge, check your
property documentation for site elevation information, then call Collier
County Emergency Management at 774 8444, or your local Emergency Management
office. Again, storm surge is the added sea water on top of the astronomical
tide and does not account for wave action.
More
information....
For
additional Collier County hurricane information, call:
Collier County Emergency Management
3301 East Tamiami Trail
Naples, Florida 34112
(239) 774-8444
Board of County Commissioners
Emergency Services Division
Collier County Florida