Classified into five categories based on their wind speed,
central pressure, and damage potential, hurricanes can cause
catastrophic damage to coastlines and several hundred miles
inland. Like hurricanes, tropical storms can spawn tornadoes,
create storm surges along the coast, and cause extensive damage
from heavy rainfall. Hurricanes that are classified as Category
Three and higher are considered major hurricanes, though
Categories One and Two are still extremely dangerous and warrant
your full attention. Hurricane: Generally, an intense tropical
weather system of strong thunderstorms, with maximum sustained
winds of 74 mph or higher. Tropical Storm: Generally, an
organized system of strong thunderstorms, with maximum sustained
winds of 39-73 mph. Hurricane/Tropical Storm Watch: A hurricane
or tropical storm is possible in your area, usually within 36
hours. Hurricane/Tropical Storm Warning: A hurricane or tropical
storm is expected in your area, usually within 24 hours. More
Terms from FEMA » Preparation f