- Coastal Flood Warning for Barnstable County, Massachusetts
- Coastal Flood Warning issued March 13 at 8:13AM EDT until March 13 at 12:00PM EDT by NWS
- Effective: Tuesday, March 13, 2018 at 7:13 a.m.
- Expires: Tuesday, March 13, 2018 at 11 a.m.
...COASTAL FLOOD WARNING REMAINS IN EFFECT UNTIL NOON EDT TODAY...
* LOCATION...Ocean-exposed shoreline from Hull to Plymouth. Cape
Cod Bay shoreline from Sandwich to Dennis. Cape Cod ocean side
from Truro to Chatham. Nantucket, including both the harbor
area and the east side.
* TIDAL DEPARTURE...3 to 3.5 feet above the predicted
astronomical tide, highest along north and east facing
shorelines of Cape Cod and Nantucket.
* TIMING...During the morning high tide between 8 AM and noon.
* COASTAL FLOOD IMPACTS...Minor to moderate coastal flooding is
likely Hull to Plymouth and Sandwich to Dennis. Areas of
moderate coastal flooding is forecast for the ocean side of
Cape Cod, Nantucket Harbor, and the east side of Nantucket.
There may be pockets of inundation of around two feet,
especially where seawalls, dunes, and other protective
shoreline structures have been compromised.
* SHORELINE IMPACTS...Severe erosion is likely from the surf
about the morning high tide, especially along the ocean side
of Cape Cod and the Nantucket east side. Waves will rapidly
build to between 15 and 20 feet across Stellwagen Bank and
Massachusetts Bay and 20 to 30 feet east of Cape Cod and
Nantucket by the time of the morning high tide.
&&
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.
Scituate
MLLW Categories - Minor 11.5 FT, Moderate 14.0 FT, Major 16.0 FT
MHHW Categories - Minor 1.8 FT, Moderate 4.3 FT, Major 6.3 FT
Total Total Departure
Day/Time Tide Tide from Norm Waves Flood
ft MLLW ft MHHW ft ft Impact
-------- --------- --------- --------- ------- --------
13/09 AM 11.6/12.1 1.9/ 2.3 2.8/ 3.4 16-20 Minor-Mdt
13/10 PM 9.6/10.1 -0.2/ 0.3 1.6/ 2.0 18-22 None
14/10 AM 8.7/ 9.2 -1.1/-0.6 -0.2/ 0.2 11-12 None
14/11 PM 8.1/ 8.6 -1.7/-1.2 -0.2/ 0.2 4 None
15/11 AM 8.9/ 9.4 -0.9/-0.4 -0.2/ 0.2 3-4 None
15/11 PM 8.3/ 8.8 -1.5/-1.0 -0.2/ 0.2 3 None
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
-------- --------- --------- --------- ------- --------
13/09 AM 12.0/12.5 1.7/ 2.2 3.2/ 3.7 11-12 Minor-Mdt
13/10 PM 10.0/10.5 -0.3/ 0.2 2.0/ 2.5 11-18 None
14/10 AM 8.8/ 9.3 -1.6/-1.1 -0.2/ 0.2 4 None
14/11 PM 8.1/ 8.6 -2.2/-1.8 -0.2/ 0.2 2-3 None
15/11 AM 9.2/ 9.7 -1.1/-0.7 -0.2/ 0.3 3 None
15/11 PM 8.6/ 9.1 -1.8/-1.3 -0.2/ 0.2 2-3 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
-------- --------- --------- --------- ------- --------
13/09 AM 11.5/12.0 1.4/ 1.9 2.1/ 2.6 6 None
13/10 PM 10.2/10.7 0.1/ 0.6 1.5/ 2.0 3-5 None
14/10 AM 9.6/10.1 -0.6/-0.1 0.0/ 0.5 5 None
14/11 PM 8.8/ 9.3 -1.4/-0.9 -0.2/ 0.2 4 None
15/11 AM 9.9/10.4 -0.2/ 0.2 0.0/ 0.5 3-4 None
15/11 PM 9.2/ 9.7 -1.0/-0.5 -0.2/ 0.2 3 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
-------- --------- --------- --------- ------- --------
13/10 AM 8.6/ 9.1 0.9/ 1.4 3.4/ 3.9 20-23 Moderate
13/11 PM 6.5/ 7.0 -1.3/-0.8 1.9/ 2.3 20-21 None
14/11 AM 5.1/ 5.6 -2.7/-2.2 -0.2/ 0.2 12-14 None
15/12 AM 4.5/ 5.0 -3.2/-2.7 -0.2/ 0.2 5 None
15/12 PM 5.2/ 5.7 -2.5/-2.0 -0.2/ 0.3 5 None
16/12 AM 4.7/ 5.2 -3.1/-2.6 -0.2/ 0.2 3-4 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
-------- --------- --------- --------- ------- --------
13/10 AM 4.7/ 5.2 0.2/ 0.8 1.3/ 1.8 4 None
13/11 PM 4.5/ 5.0 0.0/ 0.5 1.5/ 2.0 4 None
14/11 AM 3.5/ 4.0 -1.1/-0.6 0.0/ 0.5 6 None
15/12 AM 2.7/ 3.2 -1.8/-1.3 -0.2/ 0.2 3-4 None
15/12 PM 3.4/ 3.9 -1.1/-0.7 -0.2/ 0.2 3-4 None
16/01 AM 2.8/ 3.4 -1.7/-1.2 -0.2/ 0.2 2-3 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
-------- --------- --------- --------- ------- --------
13/07 PM 3.4/ 3.9 1.4/ 1.9 1.6/ 2.0 3 None
14/07 AM 2.5/ 3.0 0.5/ 1.0 0.5/ 1.0 3 None
14/08 PM 1.7/ 2.2 -0.3/ 0.2 -0.2/ 0.2 3-5 None
15/08 AM 2.0/ 2.5 0.0/ 0.5 -0.2/ 0.2 3 None
15/08 PM 1.9/ 2.3 -0.2/ 0.3 -0.2/ 0.2 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
-------- --------- --------- --------- ------- --------
13/06 PM 4.7/ 5.2 0.4/ 0.9 1.4/ 1.9 3 None
14/07 AM 4.5/ 5.0 0.2/ 0.7 0.8/ 1.3 3 None
14/07 PM 3.4/ 3.9 -1.0/-0.5 -0.2/ 0.2 2-3 None
15/08 AM 3.6/ 4.1 -0.8/-0.2 -0.2/ 0.2 3 None
15/08 PM 3.6/ 4.1 -0.8/-0.2 -0.2/ 0.2 2 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
-------- --------- --------- --------- ------- --------
13/10 AM 6.2/ 6.8 2.7/ 3.2 3.2/ 3.7 8-9 Moderate
13/11 PM 4.0/ 4.5 0.4/ 0.9 1.5/ 2.0 5-7 None
14/11 AM 2.8/ 3.4 -0.8/-0.2 -0.2/ 0.3 5 None
14/11 PM 2.3/ 2.8 -1.3/-0.8 -0.2/ 0.2 4 None
15/12 PM 2.7/ 3.2 -0.9/-0.4 -0.2/ 0.2 4 None
16/12 AM 2.5/ 3.0 -1.1/-0.7 -0.2/ 0.2 3-4 None
Nantucket East Coast - Erosion Impacts
Total Total Departure
Day/Time Tide Tide from Norm Waves Flood
ft MLLW ft MHHW ft ft Impact
-------- --------- --------- --------- ------- --------
13/10 AM 6.8/ 7.3 2.7/ 3.2 3.4/ 3.9 23-27 Mdt-Major
13/11 PM 4.7/ 5.2 0.7/ 1.1 1.9/ 2.3 21 Minor
14/11 AM 3.2/ 3.7 -1.0/-0.5 -0.2/ 0.2 12-14 None
14/11 PM 2.7/ 3.2 -1.4/-0.9 -0.2/ 0.2 5-6 None
15/12 PM 3.2/ 3.7 -0.9/-0.4 -0.2/ 0.2 6 None
16/12 AM 2.8/ 3.4 -1.3/-0.8 -0.2/ 0.2 4-5 None
Nantucket - Madaket Area Erosion Impacts
Total Total Departure
Day/Time Tide Tide from Norm Waves Flood
ft MLLW ft MHHW ft ft Impact
-------- --------- --------- --------- ------- --------
13/10 AM 4.0/ 4.5 2.6/ 3.1 1.8/ 2.2 6-8 None
13/11 PM 3.5/ 4.0 2.1/ 2.6 1.5/ 2.0 5-7 None
14/11 AM 2.2/ 2.7 0.9/ 1.4 0.0/ 0.5 5-6 None
14/11 PM 1.9/ 2.3 0.5/ 1.0 -0.2/ 0.2 8 None
15/12 PM 2.1/ 2.6 0.7/ 1.1 -0.2/ 0.2 9 None
16/12 AM 2.0/ 2.5 0.6/ 1.1 -0.2/ 0.2 6-7 None