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Winds: 74 to 95 mph
Damage: Minimal; signs, unanchored mobile homes, tree
branches power lines blown down, some coastal flooding.
Central pressure will be 28.94 inches or more and will
be accompanied by a 4- to 5-foot storm surge.
Winds: 96 to 110 mph
Damage: Moderate; larger signs, roofs, doors, windows,
mobile homes, small boats, some flooding, tree branches
blown down. Pressure 28.50 to 28.93 inches accompanied
by a storm surge of 6 to 8 feet.
Winds: 111 to 130 mph
Damage: Extensive; minor damage to buildings, some walls
fail, mobile homes, trees blown down. Flooding washes
away smaller coastal structures. Flooding up to 8 miles
inland. Pressure 27.91 to 28.49 inches accompanied by a
storm surge of nine to 12 feet.
Winds: 131 to 155 mph
Damage: Extreme; almost total destruction of doors,
windows. Some wall and roof failure. Major damage to
lower floors of oceanfront buildings. Evacuations up to
6 miles inland. Pressure 27.17 to 27.90 inches
accompanied by a storm surge of 13 to 18 feet.
Winds: Above 155 mph
Damage: Catastrophic; buildings, roofs, structures
destroyed. Flooding up to 10 miles inland, evacuation of
area. Pressure less than 27.17 inches accompanied by a
storm surge higher than 18 feet.
Most hurricane deaths occur from drowning. Within the
storm's eye a violent drop in pressure has a "plunger"
effect on the sea, indirectly creating what is known as
a storm surge. Other factors such as wind strength,
coastal topography and speed of the storm's motion more
directly affect the surge's capacity. Walls of water 30
feet high are generated and radiate outward, flooding
low coastal areas and beachfront property.
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