The formation of a hurricane depends on at least three conditions: a pre-existing disturbance with thunderstorms, warm ocean temperatures up to 80¼F and to a depth of about 150 feet, as well as light upper level winds that change very little in direction and speed throughout the depth of the atmosphere.

Hurricanes are low pressure weather systems generally forming in tropical latitudes and strengthening into tropical cyclones with wind speeds of 74 miles per hour and higher. Even with today's sophisticated computer-forecasting models, a hurricane's path, strength and potential for damage cannot be exactly predicted. This is why preparing your family and possessions for the worst possible situation is a smart move.

As hurricanes approach land, a hurricane watch or warning is issued for coastal and inland residents in the storm's path. A HURRICANE WATCH indicates hurricane conditions are possible within 24-36 hours. A HURRICANE WARNING indicates hurricane conditions are expected within 24 hours.

The strength of hurricanes, based on wind speed,
is indicated by category number. The higher the number,
the more dangerous the storm::

The Saffir-Simpson Hurricane Scale

The Saffir-Simpson Hurricane Scale is used to give an estimate of the potential property damage and flooding expected along the coast from a hurricane landfall. Wind speed is the determining factor in the scale, as storm surge values are highly dependent on the slope of the continental shelf and the shape of the coastline, in the landfall region.