Charlestown, Charles River, MA

Day	High / Low	Precip	Wind	Humidity
Sat Sep 26	Heavy Rain/Wind Close Hourly	-º / 57º	100%	NE 29 mph	91%
10pm	Rain/Wind	58º	99%	NE 29 mph	91%
11pm	Showers/Wind	58º	60%	NE 29 mph	90%
Sun Sep 27	Rain/Wind View Hourly	62º / 56º	100%	NE 24 mph	95%
12am	Showers/Wind	59º	62%	NE 28 mph	90%
1am	Rain/Wind	59º	100%	NE 25 mph	89%
2am	Heavy Rain/Wind	59º	100%	NE 25 mph	91%
3am	Heavy Rain/Wind	59º	100%	NE 24 mph	91%
4am	Heavy Rain/Wind	59º	100%	NE 24 mph	91%
5am	Rain/Wind	59º	100%	NE 25 mph	94%
6am	Rain/Wind	59º	100%	NE 24 mph	93%
7am	Rain/Wind	59º	99%	NE 24 mph	94%
8am	Rain/Wind	60º	85%	NE 23 mph	95%
9am	Rain/Wind	61º	86%	NE 22 mph	93%
10am	Rain/Wind	61º	99%	ENE 23 mph	94%
11am	Rain/Wind	61º	100%	ENE 22 mph	96%
12pm	Rain/Wind	61º	97%	ENE 22 mph	96%
1pm	Rain/Wind	61º	99%	ENE 22 mph	97%
2pm	Rain/Wind	61º	73%	ENE 20 mph	98%
3pm	Rain/Wind	61º	96%	ENE 20 mph	98%
4pm	Rain/Wind	61º	71%	ENE 20 mph	96%
5pm	Rain	61º	73%	NE 19 mph	95%
6pm	Rain	61º	72%	NE 19 mph	93%
7pm	Rain	60º	81%	NE 19 mph	94%
8pm	Rain	59º	66%	NE 17 mph	96%
9pm	Rain	59º	85%	NE 17 mph	94%
10pm	Rain	59º	90%	NE 18 mph	94%
11pm	Rain	59º	67%	NE 17 mph	95%
Mon Sep 28	Rain View Hourly	59º / 54º	91%	NE 17 mph	94%
12am	Rain	59º	73%	NE 18 mph	96%
1am	Rain	59º	93%	NE 17 mph	96%
2am	Rain	58º	92%	NE 15 mph	97%
3am	Rain	58º	96%	NE 15 mph	98%
4am	Rain	57º	96%	NE 15 mph	100%
5am	Rain	57º	96%	NE 17 mph	99%
6am	Rain	57º	93%	NE 15 mph	100%
7am	Rain	57º	92%	NE 15 mph	100%
8am	Rain	57º	86%	NE 15 mph	97%
9am	Rain	58º	83%	NE 17 mph	94%
10am	Rain	59º	84%	NE 17 mph	92%
11am	Light Rain	59º	60%	NE 15 mph	92%
12pm	Showers	59º	41%	NE 15 mph	94%
1pm	Showers	59º	55%	NE 15 mph	94%
2pm	Showers	58º	57%	NE 15 mph	94%
3pm	Showers	58º	57%	NE 14 mph	94%
4pm	Showers	58º	48%	NE 14 mph	94%
5pm	Showers	58º	54%	NNE 13 mph	93%
6pm	Rain	58º	87%	NNE 13 mph	91%
7pm	Rain	57º	69%	NNE 12 mph	90%
8pm	Light Rain	57º	71%	NNE 11 mph	93%
9pm	Light Rain	57º	69%	NNE 9 mph	94%
Tue Sep 29	AM Showers	62º / 55º	31%	N 9 mph	86%
Wed Sep 30	Partly Cloudy	71º / 56º	8%	NNW 6 mph	77%
Thu Oct 1	Partly Cloudy	78º / 65º	8%	SW 11 mph	72%
Fri Oct 2	Partly Cloudy	75º / 54º	12%	WNW 11 mph	60%
Sat Oct 3	Partly Cloudy	65º / 50º	11%	N 10 mph	52%

Coastal Flood Warning - 2:08pm Sat Sep 26 2026

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

&&

High Wind Warning - 1:24pm Sat Sep 26 2026

...HIGH WIND WARNING REMAINS IN EFFECT UNTIL 8 AM EDT SUNDAY...

WHAT: Northeast winds 20 to 30 mph with gusts of 45 to 60 mph.

WHERE: The eastern Massachusetts coast as well as the south coasts
of both Rhode Island and Massachusetts. This includes Cape Cod and
the Islands.

WHEN: Until 8 AM EDT Sunday.

IMPACTS: Damaging winds will blow down trees and power lines.
Power outages are expected. Travel will be difficult, especially
for high profile vehicles.

ADDITIONAL DETAILS: The long duration of the winds coupled with
heavy rain and fully leafed trees may exacerbate the risk for tree
damage and power outages.

PRECAUTIONARY / PREPAREDNESS ACTIONS:

People are urged to secure loose objects that could be blown around
or damaged by the wind.

&&

Storm Warning - 12:26pm Sat Sep 26 2026

...STORM WARNING NOW IN EFFECT UNTIL 10 AM EDT SUNDAY...

WHAT: Northeast winds 20 to 25 kt with gusts up to 50 kt and
waves 2 to 4 feet.

WHERE: In Massachusetts coastal waters, Boston Harbor. In
Rhode Island coastal waters, Narragansett Bay.

WHEN: Until 10 AM EDT Sunday.

IMPACTS: Storm force winds and hazardous waves will capsize
or damage vessels and reduce visibility.

PRECAUTIONARY / PREPAREDNESS ACTIONS:

Mariners should remain in port, alter course, and/or secure the
vessel for severe conditions.

&&

Flood Watch - 12:18pm Sat Sep 26 2026

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

WHAT: Flooding caused by excessive rainfall is possible.

WHERE: Central and eastern Massachusetts as well as all of Rhode
Island.

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.

&&

High Surf Advisory - 2:08pm Sat Sep 26 2026