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Tropical
Storm
Winds 39-73 mph
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Category
1 Hurricane — winds 74-95 mph (64-82
kt)
No real damage to buildings. Damage to unanchored mobile homes. Some damage
to poorly constructed signs. Also,
some coastal flooding and minor pier damage.
- Examples: Irene 1999 and Allison 1995
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Category
2 Hurricane — winds 96-110 mph (83-95
kt)
Some damage to building roofs, doors and windows. Considerable damage to
mobile homes. Flooding
damages piers and small craft in unprotected moorings may break their moorings.
Some trees blown
down.
- Examples:
Bonnie 1998, Georges(FL & LA) 1998 and Gloria
1985
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Category
3 Hurricane — winds 111-130 mph (96-113
kt)
Some structural damage to small residences and utility buildings. Large
trees blown down. Mobile homes and poorly built signs destroyed. Flooding
near the coast destroys smaller structures with larger structures damaged
by floating debris. Terrain may be flooded well inland.
- Examples: Keith 2000, Fran 1996, Opal 1995, Alicia 1983 and Betsy 1965
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Category
4 Hurricane — winds 131-155 mph (114-135
kt)
More
extensive curtainwall failures with some complete roof structure failure
on small residences. Major erosion of beach areas. Terrain may be flooded
well inland.
- Examples: Hugo 1989 and Donna 1960
- Category
5 Hurricane — winds 156 mph and up (135+
kt)
Complete roof failure on many residences and industrial buildings. Some complete
building failures with small utility buildings blown over or away. Flooding
causes major damage to lower floors of all structures near the shoreline.
Massive evacuation of residential areas may be required.
- Examples:
Andrew(FL) 1992, Camille 1969 and Labor Day 1935
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