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Emergency Preparedness 

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Threat Condition
Threat Condition

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[Hurricanes] | History | After The Storm | Evacuation | Hurricane Formation | Hurricane Effects | Preparing Your Family | Shelters | Storm Names

 

 

Heavy Rain and Flooding

Heavy Rain and Flooding 1 Heavy Rain and Flooding 2

Hurricanes typically inundate impacted areas with 6 to 12 inches or more. Heavy rains often overwhelm storm drains and result in localized flooding in low lying areas. Previously saturated ground will allow trees to become uprooted much easier, adding to the damage potential of the wind. Slower moving hurricanes will usually result in higher rainfall totals. The heaviest rainfall occurs in rainbands close to the track of the hurricane.

Hurricane Floyd struck Southeastern Virginia in September 1999 after Hurricane Dennis affected the area about ten days prior. The ground was saturated from about 7 inches of rain from Hurricane Dennis. Up to 17 inches of rain fell in the Hampton Roads area, most of which fell in the path of the hurricane. Portsmouth received 10.10 inches from Hurricane Floyd. The extremely heavy rainfall caused Lake Kilby to flood the Portsmouth Public Utilities pumping station, which resulted in a loss of water to the City of Portsmouth for 4 days. Several roads, including Interstate 64 were left impassable by rainfall flooding. The City of Franklin experienced a severe flood when the Blackwater River flooded, leaving 182 businesses and 150 homes under water.

 
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last updated October, 2003