Beaches Communities Hurricane Preparedness Training “Spring of 2006”. General Information. Hurricanes are devastating powerhouses of wind, rain, and surf. Wind gust can reach 200 mph. Can bring 6 to 12 inches of rainfall.
“Spring of 2006”
The ingredients for a hurricane include a pre-existing weather disturbance, warm tropical oceans, moisture, and relatively light winds aloft.
A hurricane is a type of tropical cyclone, which is a generic term for a low pressure system that generally forms in the tropics. The cyclone is accompanied by thunderstorms and, in the Northern Hemisphere, a counterclockwise circulation of winds near the earth's surface.Formation of a Hurricane
The process by which a tropical cyclone forms and subsequently strengthens into a hurricane depends on at least three conditions shown in the figure below
A pre-existing disturbance with thunderstorms.
Warm (at least 80ºF) ocean temperatures to a depth of about 150 feet.
Light upper level winds that do not change much in direction and speed throughout the depth of the atmosphere (low wind shear).Hurricane Formation
The main parts of a hurricane (shown below) are the rainbands on its outer edges, the eye, and the eyewall. Air spirals in toward the center in a counter-clockwise pattern, and out the top in the opposite direction. In the very center of the storm, air sinks, forming the cloud-free eye.
Cat storm Winds Surge (FT) Example
Category 1: 74-95 MPH 4-5 Irene 1999
Category 2: 96-110 MPH 6-8 Floyd 1999
Category 3: 111-130 MPH 9-12 Alicia 1993
Category 4: 131-155 MPH 13-19 Hugo 1989
Category 5: Greater than155 MPH 19+ Andrew 1992
Surge Indicator Poles, located in each community indicate the maximum expected surge per category. Cat-1 red, Cat -2 orange, Cat-3 yellow,
Cat-4 green, and Cat-5 purple.
drowned in freshwater flooding.
Most hurricanes produce tornadoes. They occur in thunderstorms embedded in the rain-bands.
Weak Moderate Strong
less 110 MPH 110-205 MPH 205 MPH+
JEANNE subsequently strengthens into a hurricane depends on at least three conditions shown in the figure below: Landfall Sept 25th, Cat 3-120 MPH, south end of Hutchinson Island in Martin County Claimed 6 deaths in Florida $6.2 Billion US damages
Hurricane IVAN: subsequently strengthens into a hurricane depends on at least three conditions shown in the figure below Sept 16th, Cat 3-130 MPH, landfall near Gulf Shores, Alabama and Escambia County Florida. Claimed 60 lives, largest hurricane of the 2004 season.
A Beach Community after a major hurricane….. Prepare subsequently strengthens into a hurricane depends on at least three conditions shown in the figure below
- Take them with you if possible.
- Secure all equipment and tarps.
- Secure the boat if possible.
- If possible move to a sheltered area (gunk hole) and secure with multiple anchors.
- If left at the dock , strip all equipment and anything that might blow, secure with multiple lines and pad (fenders).
- Leave room for the tidal variations 5-10 ft if not a floating dock.
- Take pets withyou if possible.
- Find a safe pet refuge ahead of time.
- Take supply of food/water/ collar with ID .
- Make a list of Vets and meds, first and kit , and recent photos.
- If you have to leave them, have food, water, and an escape route for them.
- Have a suitable travel container.
The Mayor’s of Duval County announce the evacuation.
- Low interest loans.
- Those who become unemployed may receive
- Temporary housing.
- Special Grants.
- Disaster recovery centers for assistance.
- For Public Assistance offer several mitigation grants.