Public Information Statement
Issued by NWS Wilmington, NC

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000 NOUS42 KILM 250835 PNSILM PUBLIC INFORMATION STATEMENT NATIONAL WEATHER SERVICE WILMINGTON NC 0436 AM EDT MON MAY 25 2015 ...THIS WEEK IS NATIONAL HURRICANE AWARENESS WEEK.... IT IS TIME FOR YOU TO PREPARE FOR THE 2015 HURRICANE SEASON. THE ATLANTIC HURRICANE SEASON BEGINS EACH YEAR ON JUNE 1ST AND ENDS NOVEMBER 30TH. BEING PREPARED CAN MAKE A BIG DIFFERENCE IN YOUR ABILITY TO COPE WHEN A STORM THREATENS. TODAY`S TOPIC IS STORM SURGE AND MARINE SAFETY. LONG PERIOD SWELL FROM A DISTANT HURRICANE CAN CREATE HIGH SURF AND DANGEROUS RIP CURRENTS ALONG THE COAST WELL AHEAD OF LANDFALL. WHEN THE HURRICANE IS ABOUT A DAY AWAY FROM MAKING LANDFALL THE CYCLONES WIND FIELD STARTS TO AFFECT THE COAST. AT THIS TIME BEACH EROSION STARTS TO OCCUR AS BOTH WINDS AND WAVES START INCREASING. STORM SURGE IS AN ABNORMAL RISE OF WATER GENERATED BY A STORM AND INDEPENDENT OF THE PREDICTED ASTRONOMICAL TIDES. STORM TIDE IS THE TOTAL WATER LEVEL RISE...A COMBINATION OF STORM SURGE AND THE ASTRONOMICAL TIDE. THE RISE IN WATER LEVEL CAN CAUSE EXTREME FLOODING IN COASTAL AREAS. IF THE STORM SURGE ARRIVES AT THE SAME TIME AS THE HIGH TIDE...THE WATER HEIGHT WILL BE EVEN GREATER...REACHING 20 FEET OR HIGHER. STORM SURGE IS PRODUCED BY WATER BEING PUSHED TOWARD SHORE BY THE FORCE OF THE WINDS MOVING CYCLONICALLY AROUND THE STORM. THE IMPACT ON SURGE OF THE LOW PRESSURE ASSOCIATED WITH INTENSE STORMS IS MINIMAL IN COMPARISON TO THE WATER BEING PUSHED TOWARD SHORE BY THE WIND. ADDING TO THE DESTRUCTIVE POWER OF THE SURGE...BATTERING WAVES CAN INCREASE DAMAGE TO PROPERTY AT THE COAST. ALONG THE IMMEDIATE COAST STORM SURGE IS THE GREATEST THREAT TO LIFE AND PROPERTY. THE STORM TIDE IS HIGHEST ON THE SIDE OF THE STORM CIRCULATION WHERE THE WIND IS BLOWING TOWARD THE COAST. SURGE IS HIGHEST CLOSER TO THE EYE...WHERE THE WIND IS STRONGEST. IN CONFINED HARBORS...THE COMBINATION OF STORM TIDES...WAVES...AND CURRENTS CAN SEVERELY DAMAGE MARINAS AND BOATS. WHEN A TROPICAL STORM OR HURRICANE WATCH IS ISSUED...MARINE INTERESTS SHOULD IMMEDIATELY TAKE ALL POSSIBLE PRECAUTIONS TO EITHER MOVE THEIR BOATS TO SAFETY OR TAKE ALL POSSIBLE STEPS TO SECURE THEM. $$ 43

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