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Just as important as the height in predicting waves that break on beaches and reefs. Long period groundswells pack more energy than shorter period ones of the same height,  leading to bigger, hollower, waves that can refract into sheltered locations. However, long period swells decay in shallow water because they drag on the sea-bed. Where there is deep water  offshore, in places like Indonesia, the longer the period, the  better the surf is the rule, but where the continental shelf is very wide, such as all around Britain, long period swells can be relatively weak and disappointing by the time they reach shore."];Text[2]=["NOTE ON TIDES","Tidal forecasts are for the closest tidal prediction station as long  as there is one within 100km of a break, and this means our tide times are approximate. Click on the tides tab for detailed information about the tide forecast at the local station. You may be able to estimate the tide time difference is between the surf break and the closest station. If so, please advise us so that we can apply this correction."];Text[14]=["NOTE ON SWELL","We would like to point out that this is open-water NWW3 (NOAA Wave Watch 3) swell. The colour of the symbols relate to the period, with deeper colours indicating longer period swells Check back soon for our new migrated swells"];Text[15]=["","See table below for key to colours and wind state"];Text[16]=["WHAT IS WINDCHILL?","This is the still-air temperature that would have the same cooling effect on exposed skin as a given combination of temperature and wind speed. As the wind speed increases, the wind chill equivalent temperature decreases; e.g., an air temperature of 30 �F (�1.1 �C) with a wind speed of 20 mph (32.2 kph) produces a wind chill of 17 �F (�8 �C). 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