South Yarmouth, MA

Day	High / Low	Precip	Wind	Humidity
Sun Sep 27	Showers Close Hourly	68º / 60º	85%	E 17 mph	94%
7am	Showers	64º	37%	E 15 mph	97%
8am	Cloudy	64º	24%	E 15 mph	99%
9am	Few Showers	65º	31%	E 15 mph	98%
10am	Cloudy	67º	21%	E 15 mph	95%
11am	Cloudy	66º	20%	E 15 mph	96%
12pm	Cloudy	67º	19%	E 15 mph	92%
1pm	Mostly Cloudy	68º	16%	E 14 mph	89%
2pm	Mostly Cloudy	68º	23%	E 15 mph	90%
3pm	Few Showers	67º	33%	ENE 15 mph	92%
4pm	Cloudy	66º	24%	ENE 15 mph	93%
5pm	Cloudy	65º	24%	ENE 15 mph	93%
6pm	Cloudy	64º	24%	ENE 14 mph	96%
7pm	Cloudy	62º	21%	ENE 14 mph	99%
8pm	Cloudy	62º	19%	ENE 13 mph	98%
9pm	Cloudy	61º	24%	ENE 12 mph	100%
10pm	Showers	61º	39%	ENE 12 mph	100%
11pm	Showers	62º	46%	ENE 13 mph	96%
Mon Sep 28	Showers View Hourly	66º / 57º	64%	ESE 7 mph	94%
12am	Showers	62º	51%	ENE 11 mph	96%
1am	Showers	61º	50%	ENE 12 mph	98%
2am	Showers	61º	49%	ENE 11 mph	98%
3am	Rain	62º	76%	ENE 11 mph	96%
4am	Rain	61º	80%	ENE 9 mph	98%
5am	Rain	62º	81%	ENE 8 mph	97%
6am	Rain	62º	75%	E 7 mph	97%
7am	Light Rain	62º	65%	E 6 mph	97%
8am	Few Showers	62º	33%	E 6 mph	100%
9am	Few Showers	63º	34%	E 6 mph	97%
10am	Showers	64º	42%	E 6 mph	95%
11am	Cloudy	65º	24%	E 6 mph	94%
12pm	Showers	66º	39%	ESE 6 mph	91%
1pm	Showers	66º	46%	ESE 6 mph	90%
2pm	Showers	66º	40%	ESE 7 mph	91%
3pm	Showers	65º	50%	ESE 7 mph	93%
4pm	Showers	65º	43%	ESE 7 mph	94%
5pm	Mostly Cloudy	65º	21%	SE 7 mph	94%
6pm	Cloudy	64º	22%	SE 5 mph	96%
7pm	Showers	63º	39%	SE 4 mph	97%
8pm	Showers	62º	44%	SE 3 mph	98%
9pm	Showers	62º	35%	SE 3 mph	97%
10pm	Cloudy	62º	24%	SSE 4 mph	96%
11pm	Cloudy	62º	24%	SSE 4 mph	95%
Tue Sep 29	Cloudy View Hourly	63º / 57º	24%	NW 8 mph	86%
12am	Cloudy	62º	20%	S 5 mph	96%
1am	Cloudy	61º	24%	S 4 mph	96%
2am	Cloudy	61º	21%	W 5 mph	96%
3am	Cloudy	60º	24%	WNW 5 mph	97%
4am	Cloudy	59º	24%	NW 6 mph	97%
5am	Cloudy	58º	24%	NW 6 mph	98%
6am	Cloudy	58º	24%	NW 6 mph	99%
Wed Sep 30	Partly Cloudy	65º / 58º	9%	WNW 5 mph	84%
Thu Oct 1	Partly Cloudy	69º / 62º	7%	SW 13 mph	86%
Fri Oct 2	Partly Cloudy	71º / 58º	20%	WSW 11 mph	76%
Sat Oct 3	Partly Cloudy	63º / 55º	20%	N 10 mph	61%
Sun Oct 4	PM Showers	61º / 53º	41%	ENE 10 mph	60%

Coastal Flood Warning - 3:19am Sun Sep 27 2026

...COASTAL FLOOD WARNING REMAINS IN EFFECT UNTIL 8 PM EDT THIS EVENING... ...HIGH SURF ADVISORY REMAINS IN EFFECT UNTIL 8 PM EDT THIS EVENING...

WHAT: For the Coastal Flood Warning, up to one foot of
inundation above ground level in low-lying areas near
shorelines and tidal waterways (3.9 to 12.6 feet Mean Lower
Low Water). For the High Surf Advisory, large breaking waves
of 6 to 15 feet in the surf zone.

WHERE: Eastern Essex MA, Suffolk MA, Eastern Norfolk MA,
Eastern Plymouth MA, Barnstable MA, Dukes MA and Nantucket MA
Counties.

WHEN: Until 8 PM EDT Sunday.

IMPACTS: Strong northeast winds with large waves will result
in minor coastal flooding with pockets of moderate coastal
flooding over multiple high tide cycles from late today
through the weekend. The water also may struggle to vacate the
area after the high tides given persistent strong northeast
winds. The greatest risk for coastal flooding appears to be
setting up south of Boston and onto the Cape and Islands. In
addition...the long duration of northeast winds coupled with
large waves over multiple high tide cycles will result in
areas of severe beach erosion for a prolonged period.

PRECAUTIONARY / PREPAREDNESS ACTIONS:

Take the necessary actions to protect flood-prone property. If
travel is required, do not drive around barricades or through
water of unknown depth.

Inexperienced swimmers should remain out of the water due to
dangerous surf conditions.

&&

Time of high total tides are approximate to the nearest hour.

Gloucester Harbor
MLLW Categories - Minor 11.5 ft, Moderate 13.0 ft, Major 15.0 ft
MHHW Categories - Minor 1.9 ft, Moderate 3.4 ft, Major 5.4 ft

Total Total Departure
Day/Time Tide Tide from Norm Waves Flood
ft MLLW ft MHHW ft ft Impact
-------- --------- --------- --------- ------- --------
27/12 AM 11.2/11.7 1.6/ 2.0 1.8/ 2.2 11 None
27/12 PM 11.2/11.7 1.6/ 2.0 1.5/ 2.0 10-11 None
28/01 AM 10.4/10.9 0.8/ 1.3 1.0/ 1.5 8 None
28/01 PM 11.0/11.5 1.4/ 1.9 0.9/ 1.4 7 None
29/01 AM 10.2/10.7 0.6/ 1.1 0.8/ 1.3 5-6 None
29/01 PM 11.0/11.5 1.4/ 1.9 0.8/ 1.3 4 None

Merrimack River near Newburyport MA
MLLW Categories - Minor 11.0 ft, Moderate 12.0 ft, Major 13.5 ft
MHHW Categories - Minor 1.5 ft, Moderate 2.5 ft, Major 4.0 ft

Total Total Departure
Day/Time Tide Tide from Norm Waves Flood
ft MLLW ft MHHW ft ft Impact
-------- --------- --------- --------- ------- --------
27/12 AM 10.3/10.8 0.8/ 1.3 1.8/ 2.2 8-9 None
27/12 PM 10.2/10.7 0.7/ 1.1 1.5/ 2.0 7-8 None
28/01 AM 9.6/10.1 0.1/ 0.6 1.0/ 1.5 6 None
28/01 PM 10.0/10.5 0.5/ 1.0 0.9/ 1.4 5 None
29/02 AM 9.3/ 9.8 -0.2/ 0.2 0.9/ 1.4 4 None
29/02 PM 10.2/10.7 0.7/ 1.1 0.9/ 1.4 3 None

Boston Harbor
MLLW Categories - Minor 12.5 ft, Moderate 14.0 ft, Major 15.0 ft
MHHW Categories - Minor 2.2 ft, Moderate 3.7 ft, Major 4.7 ft

Total Total Departure
Day/Time Tide Tide from Norm Waves Flood
ft MLLW ft MHHW ft ft Impact
-------- --------- --------- --------- ------- --------
27/12 AM 12.4/12.9 2.1/ 2.6 2.1/ 2.6 3 Minor
27/12 PM 12.3/12.8 2.0/ 2.5 1.7/ 2.2 3 Minor
28/12 AM 11.3/11.8 1.0/ 1.5 1.2/ 1.7 2 None
28/01 PM 12.0/12.5 1.7/ 2.2 1.1/ 1.6 2 None
29/01 AM 11.1/11.6 0.8/ 1.3 0.9/ 1.4 1-2 None
29/02 PM 11.9/12.4 1.6/ 2.0 0.9/ 1.4 1 None

Revere
MLLW Categories - Minor 12.5 ft, Moderate 14.5 ft, Major 16.0 ft
MHHW Categories - Minor 2.6 ft, Moderate 4.6 ft, Major 6.1 ft

Total Total Departure
Day/Time Tide Tide from Norm Waves Flood
ft MLLW ft MHHW ft ft Impact
-------- --------- --------- --------- ------- --------
27/12 AM 12.1/12.6 2.2/ 2.7 2.0/ 2.5 2-3 None
27/12 PM 12.0/12.5 2.1/ 2.6 1.7/ 2.2 2 None
28/01 AM 11.1/11.6 1.2/ 1.7 1.1/ 1.6 2 None
28/01 PM 11.6/12.1 1.7/ 2.2 1.0/ 1.5 2 None
29/01 AM 10.8/11.3 0.9/ 1.4 0.9/ 1.4 1-2 None
29/02 PM 11.5/12.0 1.6/ 2.0 0.8/ 1.3 1 None

Green Harbor
MLLW Categories - Minor 11.5 ft, Moderate 13.5 ft, Major 15.5 ft
MHHW Categories - Minor 1.6 ft, Moderate 3.6 ft, Major 5.6 ft

Total Total Departure
Day/Time Tide Tide from Norm Waves Flood
ft MLLW ft MHHW ft ft Impact
-------- --------- --------- --------- ------- --------
27/12 AM 11.6/12.1 1.7/ 2.2 2.0/ 2.5 7-8 Minor
27/12 PM 11.5/12.0 1.6/ 2.0 1.7/ 2.2 7 Minor
28/01 AM 10.7/11.2 0.8/ 1.3 1.1/ 1.6 5 None
28/01 PM 11.2/11.7 1.3/ 1.8 1.0/ 1.5 4 None
29/01 AM 10.4/10.9 0.5/ 1.0 0.9/ 1.4 4 None
29/02 PM 11.2/11.7 1.3/ 1.8 0.8/ 1.3 3 None

Scituate MA
MLLW Categories - Minor 11.5 ft, Moderate 13.5 ft, Major 15.5 ft
MHHW Categories - Minor 1.8 ft, Moderate 3.8 ft, Major 5.8 ft

Total Total Departure
Day/Time Tide Tide from Norm Waves Flood
ft MLLW ft MHHW ft ft Impact
-------- --------- --------- --------- ------- --------
27/12 AM 11.3/11.8 1.6/ 2.0 1.9/ 2.3 10 Minor
27/12 PM 11.3/11.8 1.6/ 2.0 1.6/ 2.0 9 Minor
28/01 AM 10.5/11.0 0.8/ 1.3 1.1/ 1.6 7 None
28/01 PM 11.1/11.6 1.4/ 1.9 1.0/ 1.5 6 None
29/01 AM 10.3/10.8 0.6/ 1.1 0.9/ 1.4 5 None
29/02 PM 11.0/11.5 1.3/ 1.8 0.8/ 1.3 3-4 None

Buzzards Bay at 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
-------- --------- --------- --------- ------- --------
26/09 PM 3.7/ 4.2 1.8/ 2.2 1.6/ 2.0 5 None
27/09 AM 4.0/ 4.5 2.1/ 2.6 1.6/ 2.0 4 None
27/09 PM 3.0/ 3.5 1.0/ 1.5 0.9/ 1.4 3 None
28/10 AM 3.6/ 4.1 1.6/ 2.0 0.9/ 1.4 2 None
28/10 PM 2.7/ 3.2 0.7/ 1.1 0.7/ 1.1 2 None
29/11 AM 3.4/ 3.9 1.4/ 1.9 0.7/ 1.1 2 None

Chatham MA - East Coast
MLLW Categories - Minor 9.0 ft, Moderate 11.5 ft, Major 13.0 ft
MHHW Categories - Minor 3.8 ft, Moderate 6.3 ft, Major 7.8 ft

Total Total Departure
Day/Time Tide Tide from Norm Waves Flood
ft MLLW ft MHHW ft ft Impact
-------- --------- --------- --------- ------- --------
27/01 AM 7.1/ 7.6 1.9/ 2.3 1.7/ 2.2 8-9 None
27/01 PM 7.1/ 7.6 1.9/ 2.3 1.4/ 1.9 7 None
28/01 AM 6.2/ 6.7 1.0/ 1.5 0.9/ 1.4 5 None
28/01 PM 6.6/ 7.1 1.4/ 1.9 0.8/ 1.3 5 None
29/02 AM 6.0/ 6.5 0.8/ 1.3 0.7/ 1.1 4 None
29/02 PM 6.8/ 7.3 1.6/ 2.0 0.7/ 1.1 3-4 None

Chatham - South side
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
-------- --------- --------- --------- ------- --------
27/01 AM 5.5/ 6.0 1.0/ 1.5 1.5/ 2.0 7 None
27/01 PM 5.5/ 6.0 1.0/ 1.5 1.2/ 1.7 6 None
28/01 AM 4.7/ 5.2 0.2/ 0.8 0.9/ 1.4 4-5 None
28/01 PM 5.2/ 5.7 0.7/ 1.1 0.7/ 1.1 4 None
29/02 AM 4.6/ 5.1 0.1/ 0.6 0.7/ 1.1 4 None
29/02 PM 5.2/ 5.7 0.8/ 1.3 0.7/ 1.1 3 None

Hyannis Harbor
MLLW Categories - Minor 5.0 ft, Moderate 6.5 ft, Major 8.5 ft
MHHW Categories - Minor 1.2 ft, Moderate 2.7 ft, Major 4.7 ft

Total Total Departure
Day/Time Tide Tide from Norm Waves Flood
ft MLLW ft MHHW ft ft Impact
-------- --------- --------- --------- ------- --------
27/01 AM 5.2/ 5.7 1.5/ 2.0 1.8/ 2.2 4 Minor
27/01 PM 5.1/ 5.6 1.3/ 1.8 1.3/ 1.8 4 Minor
28/02 AM 4.2/ 4.7 0.5/ 1.0 0.9/ 1.4 2-3 None
28/02 PM 4.7/ 5.2 0.9/ 1.4 0.8/ 1.3 2 None
29/02 AM 4.0/ 4.5 0.2/ 0.7 0.7/ 1.1 2 None
29/02 PM 4.7/ 5.2 0.9/ 1.4 0.7/ 1.1 2 None

Provincetown Harbor
MLLW Categories - Minor 13.0 ft, Moderate 14.0 ft, Major 15.0 ft
MHHW Categories - Minor 2.9 ft, Moderate 3.9 ft, Major 4.9 ft

Total Total Departure
Day/Time Tide Tide from Norm Waves Flood
ft MLLW ft MHHW ft ft Impact
-------- --------- --------- --------- ------- --------
27/12 AM 11.9/12.4 1.8/ 2.2 1.7/ 2.2 9 None
27/12 PM 11.8/12.3 1.7/ 2.2 1.5/ 2.0 8-9 None
28/01 AM 11.2/11.7 1.1/ 1.6 1.0/ 1.5 6 None
28/01 PM 11.5/12.0 1.4/ 1.9 0.8/ 1.3 5 None
29/01 AM 10.8/11.3 0.7/ 1.1 0.8/ 1.3 4-5 None
29/02 PM 11.6/12.1 1.5/ 2.0 0.8/ 1.3 3 None

Dennis - Sesuit Harbor
MLLW Categories - Minor 13.0 ft, Moderate 14.5 ft, Major 16.0 ft
MHHW Categories - Minor 2.5 ft, Moderate 4.0 ft, Major 5.5 ft

Total Total Departure
Day/Time Tide Tide from Norm Waves Flood
ft MLLW ft MHHW ft ft Impact
-------- --------- --------- --------- ------- --------
27/12 AM 12.3/12.8 1.8/ 2.2 1.9/ 2.3 5 None
27/12 PM 12.2/12.7 1.7/ 2.2 1.5/ 2.0 4-5 None
28/01 AM 11.5/12.0 1.0/ 1.5 1.0/ 1.5 3 None
28/01 PM 12.1/12.6 1.6/ 2.0 0.9/ 1.4 3 None
29/01 AM 11.2/11.7 0.7/ 1.1 0.8/ 1.3 2 None
29/02 PM 12.1/12.6 1.6/ 2.0 0.8/ 1.3 2 None

Sandwich Harbor
MLLW Categories - Minor 12.0 ft, Moderate 14.0 ft, Major 15.0 ft
MHHW Categories - Minor 1.7 ft, Moderate 3.7 ft, Major 4.7 ft

Total Total Departure
Day/Time Tide Tide from Norm Waves Flood
ft MLLW ft MHHW ft ft Impact
-------- --------- --------- --------- ------- --------
27/12 AM 10.9/11.4 0.6/ 1.1 2.1/ 2.6 5 None
27/12 PM 10.8/11.3 0.5/ 1.0 1.7/ 2.2 4-5 None
28/01 AM 9.9/10.4 -0.5/ 0.0 1.2/ 1.7 3 None
28/01 PM 10.4/10.9 0.1/ 0.6 1.0/ 1.5 2 None
29/01 AM 9.5/10.0 -0.9/-0.4 0.9/ 1.4 2 None
29/02 PM 10.3/10.8 0.0/ 0.5 0.9/ 1.4 2 None

Wings Neck
MLLW Categories - Minor 6.5 ft, Moderate 9.0 ft, Major 11.5 ft
MHHW Categories - Minor 2.1 ft, Moderate 4.6 ft, Major 7.1 ft

Total Total Departure
Day/Time Tide Tide from Norm Waves Flood
ft MLLW ft MHHW ft ft Impact
-------- --------- --------- --------- ------- --------
26/09 PM 4.9/ 5.4 0.5/ 1.0 0.7/ 1.1 3 None
27/09 AM 5.7/ 6.2 1.3/ 1.8 1.1/ 1.6 3 None
27/09 PM 4.7/ 5.2 0.2/ 0.8 0.6/ 1.1 3 None
28/10 AM 5.5/ 6.0 1.1/ 1.6 0.8/ 1.3 2 None
28/10 PM 4.7/ 5.2 0.2/ 0.8 0.6/ 1.1 1-2 None
29/11 AM 5.4/ 5.9 1.0/ 1.5 0.7/ 1.1 1-2 None

Edgartown
MLLW Categories - Minor 4.0 ft, Moderate 5.0 ft, Major 7.0 ft
MHHW Categories - Minor 1.3 ft, Moderate 2.3 ft, Major 4.3 ft

Total Total Departure
Day/Time Tide Tide from Norm Waves Flood
ft MLLW ft MHHW ft ft Impact
-------- --------- --------- --------- ------- --------
27/01 AM 4.0/ 4.5 1.4/ 1.9 2.1/ 2.6 6 Minor
28/01 AM 2.8/ 3.4 0.2/ 0.7 1.0/ 1.5 3 None
28/11 AM 3.4/ 3.9 0.7/ 1.1 0.9/ 1.4 2-3 None
29/02 AM 2.5/ 3.0 -0.2/ 0.2 0.7/ 1.1 3 None
29/12 PM 3.2/ 3.7 0.6/ 1.1 0.7/ 1.1 2 None

Vineyard Haven
MLLW Categories - Minor 4.5 ft, Moderate 6.0 ft, Major 7.0 ft
MHHW Categories - Minor 2.5 ft, Moderate 4.0 ft, Major 5.0 ft

Total Total Departure
Day/Time Tide Tide from Norm Waves Flood
ft MLLW ft MHHW ft ft Impact
-------- --------- --------- --------- ------- --------
27/12 AM 3.7/ 4.2 1.7/ 2.2 1.9/ 2.3 4-5 None
27/12 PM 3.2/ 3.7 1.2/ 1.7 1.3/ 1.8 4 None
28/01 AM 2.6/ 3.1 0.6/ 1.1 0.9/ 1.4 2-3 None
28/01 PM 2.7/ 3.2 0.8/ 1.3 0.8/ 1.3 2 None
29/02 AM 2.2/ 2.7 0.2/ 0.8 0.7/ 1.1 2 None
29/01 PM 2.7/ 3.2 0.7/ 1.1 0.7/ 1.1 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
-------- --------- --------- --------- ------- --------
27/01 AM 5.1/ 5.6 1.5/ 2.0 1.8/ 2.2 8 Minor
27/01 PM 4.7/ 5.2 1.2/ 1.7 1.2/ 1.7 6-7 Minor
28/01 AM 4.0/ 4.5 0.5/ 1.0 0.9/ 1.4 4-5 None
28/02 PM 4.5/ 5.0 0.9/ 1.4 0.7/ 1.1 4 None
29/02 AM 3.7/ 4.2 0.2/ 0.7 0.7/ 1.1 4 None
29/02 PM 4.6/ 5.1 1.0/ 1.5 0.7/ 1.1 3 None

&&

Flood Watch - 2:48am Sun Sep 27 2026

...FLOOD WATCH REMAINS IN EFFECT THROUGH LATE MONDAY NIGHT...

WHAT: Flooding caused by excessive rainfall continues to be
possible.

WHERE: Portions of Massachusetts, including the following areas,
Barnstable MA, Central Middlesex MA, Dukes MA, Eastern Essex MA,
Eastern Norfolk MA, Eastern Plymouth MA, Nantucket MA, Northern
Bristol MA, Northern Middlesex MA, Northern Worcester MA, Southeast
Middlesex MA, Southern Bristol MA, Southern Plymouth MA, Southern
Worcester MA, Suffolk MA, Western Essex MA, Western Norfolk MA and
Western Plymouth MA and Rhode Island, including the following
areas, Block Island RI, Bristol RI, Eastern Kent RI, Newport RI,
Northwest Providence RI, Southeast Providence RI, Washington RI and
Western Kent RI.

WHEN: Through late Monday night.

IMPACTS: Excessive runoff may result in flooding of rivers,
creeks, streams, and other low-lying and flood-prone locations.
Creeks and streams may rise out of their banks.

ADDITIONAL DETAILS: - Periods of rain will continue across the region right through
Monday. Storm total rainfall amount of 2-4" are expected, but
localized 5-7" amounts are possible. If these higher amounts are
realized...the potential for both urban and small river/stream
flooding would increase. This is particularly true if these
localized higher amounts occur over a vulnerable urban center.

- Http://www.weather.gov/safety/flood

PRECAUTIONARY / PREPAREDNESS ACTIONS:

You should monitor later forecasts and be alert for possible Flood
Warnings. Those living in areas prone to flooding should be prepared
to take action should flooding develop.

&&

Gale Warning - 2:21am Sun Sep 27 2026

...GALE WARNING IN EFFECT UNTIL NOON EDT TODAY... ...STORM WARNING IS CANCELLED...

WHAT: East winds 20 to 30 kt with gusts up to 45 kt and seas
6 to 9 feet.

WHERE: In Massachusetts coastal waters, Nantucket Sound,
Vineyard Sound and Buzzards Bay. In Rhode Island coastal
waters, Rhode Island Sound and Block Island Sound.

WHEN: Until noon EDT today.

IMPACTS: Strong winds will cause hazardous seas which could
capsize or damage vessels and reduce visibility.

PRECAUTIONARY / PREPAREDNESS ACTIONS:

Mariners should alter plans to avoid these hazardous conditions.
Remain in port, seek safe harbor, alter course, and/or secure the
vessel for hazardous conditions.

&&

High Surf Advisory - 3:19am Sun Sep 27 2026