Raymarine E120W Reference Manual page 278

E-series networked display
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262
Term
E-Series Networded Display Reference Manual
Definition
Category 2
Winds 96-110 mph (83-95 kt or 154-177 km/hr). Storm surge
generally 6-8 feet above normal. Some roofing material, door,
and window damage of buildings. Considerable damage to
shrubbery and trees with some trees blown down. Considerable
damage to mobile homes, poorly constructed signs, and piers.
Coastal and low-lying escape routes flood 2-4 hours before
arrival of the hurricane centre Small craft in unprotected
anchorages break moorings.
Category 3
Winds 111-130 mph (96-113 kt or 178-209 km/hr). Storm surge
generally 9-12 ft above normal. Some structural damage to
small residences and utility buildings with a minor amount of
curtainwall failures. Damage to shrubbery and trees with foli-
age blown off trees and large trees blown down. Mobile homes
and poorly constructed signs are destroyed. Low-lying escape
routes are cut by rising water 3-5 hours before arrival of the cen-
tre of the hurricane. Flooding near the coast destroys smaller
structures with larger structures damaged by battering from
floating debris. Terrain continuously lower than 5 ft above
mean sea level may be flooded inland 8 miles (13 km) or more.
Evacuation of low-lying residences with several blocks of the
shoreline may be required.
Category 4
Winds 131-155 mph (114-135 kt or 210-249 km/hr). Storm
surge generally 13-18 ft above normal. More extensive curtain-
wall failures with some complete roof structure failures on
small residences. Shrubs, trees, and all signs are blown down.
Complete destruction of mobile homes. Extensive damage to
doors and windows. Low-lying escape routes may be cut by ris-
ing water 3-5 hours before arrival of the centre of the hurricane.
Major damage to lower floors of structures near the shore. Ter-
rain lower than 10 ft above sea level may be flooded requiring
massive evacuation of residential areas as far inland as 6 miles
(10 km).

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