Emergency Plan - Grand Strand Water and Sewer Authority
Emergency Plan - Grand Strand Water and Sewer Authority
Emergency Plan - Grand Strand Water and Sewer Authority
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EVENT SPECIFIC GUIDELINES 1<br />
HURRICANE<br />
(ESG-1)<br />
3.1.3. SAFFIR / SIMPSON HURRICANE INTENSITY CATEGORIES<br />
Category<br />
Maximum<br />
Winds (MPH)<br />
Maximum<br />
Winds (KTS)<br />
Storm Surge<br />
(FT)<br />
1 74 – 95 64 – 82 4 – 5<br />
2 96 – 110 83 – 95 6 – 8<br />
3 111 – 130 96 – 113 9 – 12<br />
4 131 – 155 114 – 135 13 – 18<br />
5 >155 >135 >18<br />
Potential Damages<br />
Damage to trees <strong>and</strong> signs<br />
Generally no major damage to buildings<br />
Considerable damage to trees <strong>and</strong> signs; some<br />
trees blown down<br />
Some roofing material, door <strong>and</strong> window damage<br />
to buildings<br />
Foliage blown off trees; large trees down<br />
Some structural damage to buildings<br />
Severe damage to mobile homes<br />
Most trees <strong>and</strong> signs blown down<br />
More extensive damage to structures, with some<br />
complete roof failures; extensive damage to doors<br />
<strong>and</strong> windows<br />
Most trees <strong>and</strong> signs blown down<br />
More extensive roof failures; severe <strong>and</strong> extensive<br />
damage to doors <strong>and</strong> windows; some complete<br />
building failures<br />
Complete destruction of mobile homes<br />
Storm Surge: A 50 to 100 mile wide swell, or surge of water that is pushed ahead of a l<strong>and</strong><br />
falling tropical cyclone. It is usually greatest in the NW quadrant of the storm, near the eye<br />
wall. This surge of high water, often topped by waves, can be devastating. Along the<br />
immediate coastline, storm surge is the greatest threat to life <strong>and</strong> property.<br />
Winds: A storm’s winds will be strongest in <strong>and</strong> near the eye wall. Hurricanes can also<br />
produce tornadoes which most often occur in the rain b<strong>and</strong>s well away from the eye.<br />
<strong>Gr<strong>and</strong></strong> <strong>Str<strong>and</strong></strong> <strong>Water</strong> & <strong>Sewer</strong> <strong>Authority</strong> 84 CONFIDENTIAL MATERIALS<br />
<strong>Emergency</strong> Management <strong>Plan</strong><br />
SECURITY SENSITIVE<br />
June 7, 2013<br />
NOT FOR PUBLIC DISCLOSURE
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