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Emergencies & Storms

Category

Wind speed

Storm surge

Description

 

mph
(km/h)

ft
(m)

 

5

156
(250)

>18

(>5.5)

Complete roof failure on homes and industrial buildings. Some complete building failures. Severe and extensive window and door damage.

4

131-155
(210
-249)

13-18
(4.0
-5.5)

Wall failures in homes and complete roof structure failure on small homes. Total destruction of mobile homes. Trees, shrubs, and signs all blown down.

3

111-130
(178
-209)

9-12
(2.7
-3.7)

Some structural damage to small residences and utility buildings. Large trees blown down. Mobile homes and poorly built signs destroyed.

2

96-110
(154
-177)

6-8
(1.8
-2.4)

Some damage to building roofs, doors and windows. Considerable damage to mobile homes. Some trees blown down.

1

74-95
(119
-153)

4-5
(1.2
-1.5)

No real damage to buildings. Damage to unanchored mobile homes. Some damage to poorly constructed signs.

Tropical
Storm

39-73
(63
-117)

0-3
(0
-0.9)

Stronger than a tropical depression, the characteristic, cyclonic shape starts to develop.

Tropical
Depression

0-38
(0
-62)

0
(0)

An organized system of strong thunderstorms with a defined surface circulation with no organization or spiral shape.