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ntb group - INFOCENTER |
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Hurricane Watch vs. Warning |
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KNOW THE DIFFERENCE
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A HURRICANE WATCH issued for your part
of the coast indicates the possibility that you could
experience hurricane conditions within 36 hours.
This watch should trigger your family's disaster plan, and
protective measures should be initiated, especially those
actions that require extra time such as securing a boat,
leaving a barrier island, etc.
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A
HURRICANE WARNING
issued for your part of the coast indicates that sustained
winds of at least 74 mph are expected within 24 hours or
less.
Once this warning has been issued, your family should be in
the process of completing protective actions and deciding
the safest location to be during the storm.
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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: Frances 2004(FL), 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: Jeanne(FL), 2004, 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
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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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