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Hurricane Preparedness Tip

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Quick Reference Sheet

August 03, 2010

Stages of Development
Hurricane > 64 kts
Tropical Storm 35-64 kts
eTropical Depression < 35 kts (Closed Circulation)
Tropical Disturbance < 35 kts (No Closed Circulation)

Hurricanes

Category Winds(kts) Surge(ft) Damage
1 65-82 4-5 Minimal
2 83-95 6-8 Moderate
3 96-113 9-12 Extensive
4 114-135 13-18 Extreme
5 > 135 > 18 Catastrophic

Tropical Cyclone Conditions
(Time to onset of destructive winds)
Condition V: 96hrs
Condition IV: 72hrs

Tropical Storm Conditions
(Time to onset of 34-63kt winds)
Condition III: 48hrs
Condition II: 24hrs
Condition I: 12hrs

Hurricane Conditions
(Time to onset of 64+kt winds)
Condition III: 48hrs
Condition II: 24hrs
Condition I: 12hrs

National Hurricane Center Watches and Warnings
Tropical Storm Watch: Conditions expected within 36 hours
Tropical Storm Warning: Conditions expected within 24 hours
Hurricane Watch: Hurricane conditions expected within 36 hours
Hurricane Warning: Hurricane conditions expected within 24 hours

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