From the National Weather Service: Coastal Hazard Message National Weather Service Boston/Norton MA 352 PM EDT Sat Sep 8 2018 MAZ022-024-090400- /O.NEW.KBOX.SU.Y.0002.180909T1400Z-180910T0000Z/ /O.NEW.KBOX.CF.S.0012.180909T0100Z-180909T0500Z/ Barnstable MA-Nantucket MA- 352 PM EDT Sat Sep 8 2018 ...HIGH SURF ADVISORY IN EFFECT FROM 10 AM TO 8 PM EDT SUNDAY... ...COASTAL FLOOD STATEMENT FOR LATE EVENING HIGH TIDE TONIGHT... * LOCATIONS...Cape Cod and Nantucket. * TIMING...Minor splashover late this evening, mainly at eastern facing coastlines. High surf and a high risk for rip currents late Sunday morning into Sunday night, primarily at south facing beaches. * COASTAL FLOOD IMPACTS...Typically prone locations may experience minor splashover and coastal inundation around the time of high tide late this evening. * SURF ZONE IMPACTS...Large breaking waves will be dangerous to anyone who enters the surf. A high risk for rip currents is also expected. PRECAUTIONARY/PREPAREDNESS ACTIONS... A rip current, sometimes mistakenly called an undertow, is a strong but narrow current of water flowing from the beach to the surf zone. It can rapidly carry a swimmer into deeper water, and exhaust an individual trying to swim against it. If you are a poor swimmer and are caught in a rip current, swim parallel to the beach until out of its pull, then swim back to shore. Another means of escape for good swimmers is to ride the current out until it dissipates, then swim back to shore outside of the rip current. Do not attempt to swim directly into the rip current, it can exhaust and drown even the strongest swimmer. Heed the advice of the beach patrol and swim only at guarded beaches. Be especially cautious near piers and jetties, where rip currents can be enhanced. In addition, viewers of large surf should stay in safe areas well away from possible splashover. Individual waves may be more than twice the average wave height, which can sweep a person into the water from what may seem to be a safe viewing area. Falling into turbulent and sometimes rocky waters can result in injury that reduces the chance of survival. && Time of high total tides are approximate to the nearest hour. Category thresholds are based on still water levels. Impacts may be greater, depending upon wave action. Sandwich / Dennis MLLW Categories - Minor 13.0 FT, Moderate 14.0 FT, Major 15.5 FT MHHW Categories - Minor 2.7 FT, Moderate 3.7 FT, Major 5.2 FT Total Total Departure Day/Time Tide Tide from Norm Waves Flood ft MLLW ft MHHW ft ft Impact -------- --------- --------- --------- ------- -------- 08/11 PM 11.2/11.7 0.9/ 1.4 -0.2/ 0.3 2 None 09/11 AM 10.6/11.1 0.2/ 0.8 0.1/ 0.6 3 None 10/12 AM 11.5/12.0 1.2/ 1.7 0.1/ 0.6 3 None 10/12 PM 11.3/11.8 1.0/ 1.5 0.4/ 0.9 4 None Provincetown Harbor MLLW Categories - Minor 12.5 FT, Moderate 13.5 FT, Major 15.0 FT MHHW Categories - Minor 2.4 FT, Moderate 3.4 FT, Major 4.9 FT Total Total Departure Day/Time Tide Tide from Norm Waves Flood ft MLLW ft MHHW ft ft Impact -------- --------- --------- --------- ------- -------- 08/11 PM 11.6/12.1 1.5/ 2.0 -0.2/ 0.2 2 None 09/11 AM 10.9/11.4 0.8/ 1.3 0.0/ 0.5 2-3 None 10/12 AM 11.9/12.4 1.8/ 2.2 0.0/ 0.5 2 None 10/12 PM 11.6/12.1 1.5/ 2.0 0.2/ 0.8 3-4 None Chatham - East Coast MLLW Categories - Minor 9.5 FT, Moderate 12.0 FT, Major 13.0 FT MHHW Categories - Minor 1.8 FT, Moderate 4.3 FT, Major 5.3 FT Total Total Departure Day/Time Tide Tide from Norm Waves Flood ft MLLW ft MHHW ft ft Impact -------- --------- --------- --------- ------- -------- 09/12 AM 6.4/ 6.9 -1.4/-0.9 -0.2/ 0.2 4 None 09/12 PM 5.9/ 6.4 -1.9/-1.4 0.0/ 0.5 5 None 10/01 AM 6.6/ 7.1 -1.1/-0.7 0.0/ 0.5 5-6 None 10/01 PM 6.4/ 6.9 -1.4/-0.9 0.2/ 0.8 8 None Chatham - South Coast MLLW Categories - Minor 9.0 FT, Moderate 10.5 FT, Major 11.5 FT MHHW Categories - Minor 4.5 FT, Moderate 6.0 FT, Major 7.0 FT Total Total Departure Day/Time Tide Tide from Norm Waves Flood ft MLLW ft MHHW ft ft Impact -------- --------- --------- --------- ------- -------- 09/12 AM 4.4/ 4.9 -0.2/ 0.3 -0.2/ 0.2 2 None 09/12 PM 4.0/ 4.5 -0.6/-0.1 0.0/ 0.5 2 None 10/01 AM 4.6/ 5.1 0.1/ 0.6 0.0/ 0.5 2-3 None 10/01 PM 4.6/ 5.1 0.1/ 0.6 0.5/ 1.0 3-4 None Buzzards Bay - Woods Hole MLLW Categories - Minor 5.5 FT, Moderate 7.0 FT, Major 8.5 FT MHHW Categories - Minor 3.5 FT, Moderate 5.0 FT, Major 6.5 FT Total Total Departure Day/Time Tide Tide from Norm Waves Flood ft MLLW ft MHHW ft ft Impact -------- --------- --------- --------- ------- -------- 08/08 PM 3.0/ 3.5 1.0/ 1.5 -0.2/ 0.2 1 None 09/08 AM 3.1/ 3.6 1.1/ 1.6 0.0/ 0.5 2 None 09/09 PM 3.4/ 3.9 1.4/ 1.9 0.2/ 0.7 2 None 10/09 AM 3.6/ 4.1 1.6/ 2.0 0.4/ 0.9 2-3 None Wings Neck MLLW Categories - Minor 6.5 FT, Moderate 9.0 FT, Major 11.5 FT MHHW Categories - Minor 2.2 FT, Moderate 4.7 FT, Major 7.2 FT Total Total Departure Day/Time Tide Tide from Norm Waves Flood ft MLLW ft MHHW ft ft Impact -------- --------- --------- --------- ------- -------- 08/08 PM 5.1/ 5.6 0.8/ 1.3 -0.2/ 0.3 1 None 09/08 AM 5.2/ 5.7 1.0/ 1.5 0.1/ 0.6 1 None 09/09 PM 5.4/ 5.9 1.1/ 1.6 0.2/ 0.7 1 None 10/09 AM 5.7/ 6.2 1.4/ 1.9 0.4/ 0.9 1-3 None Nantucket Harbor MLLW Categories - Minor 5.0 FT, Moderate 6.5 FT, Major 8.0 FT MHHW Categories - Minor 1.4 FT, Moderate 2.9 FT, Major 4.4 FT Total Total Departure Day/Time Tide Tide from Norm Waves Flood ft MLLW ft MHHW ft ft Impact -------- --------- --------- --------- ------- -------- 09/12 AM 3.7/ 4.2 0.1/ 0.6 -0.2/ 0.2 3 None 09/12 PM 3.4/ 3.9 -0.2/ 0.2 0.0/ 0.5 3-4 None 10/01 AM 3.9/ 4.4 0.2/ 0.8 0.1/ 0.6 4 None 10/01 PM 3.9/ 4.4 0.2/ 0.8 0.4/ 0.9 5 None Nantucket East Coast - Erosion Impacts Total Total Departure Day/Time Tide Tide from Norm Waves Flood ft MLLW ft MHHW ft ft Impact -------- --------- --------- --------- ------- -------- 09/12 AM 4.0/ 4.5 0.0/ 0.5 -0.2/ 0.2 4 None 09/12 PM 3.7/ 4.2 -0.3/ 0.2 0.0/ 0.5 5 None 10/01 AM 4.2/ 4.7 0.2/ 0.7 0.1/ 0.6 6 None 10/01 PM 4.5/ 5.0 0.4/ 0.9 0.5/ 1.0 7-8 None Nantucket - Madaket Area Erosion Impacts Total Total Departure Day/Time Tide Tide from Norm Waves Flood ft MLLW ft MHHW ft ft Impact -------- --------- --------- --------- ------- -------- 09/12 AM 2.6/ 3.1 1.2/ 1.7 -0.2/ 0.2 3 None 09/12 PM 2.6/ 3.1 1.2/ 1.7 0.0/ 0.5 3-4 None 10/12 AM 2.8/ 3.4 1.5/ 2.0 0.1/ 0.6 4 None 10/01 PM 3.0/ 3.5 1.6/ 2.0 0.4/ 0.9 5 None
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