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Massachusetts Bay at Scituate (IN MLLW) Tide Height (ft)Forecast: 7.8 ft 9:00PM Mar 08, 2021Forecast: 6.3 ft 10:00PM Mar 08, 2021Forecast: 4.2 ft 11:00PM Mar 08, 2021Forecast: 2.4 ft 12:00AM Mar 09, 2021Forecast: 1.3 ft 1:00AM Mar 09, 2021Forecast: 1.5 ft 2:00AM Mar 09, 2021Forecast: 2.7 ft 3:00AM Mar 09, 2021Forecast: 4.2 ft 4:00AM Mar 09, 2021Forecast: 6.1 ft 5:00AM Mar 09, 2021Forecast: 8.1 ft 6:00AM Mar 09, 2021Forecast: 9.5 ft 7:00AM Mar 09, 2021Forecast: 9.9 ft 8:00AM Mar 09, 2021Forecast: 9.3 ft 9:00AM Mar 09, 2021Forecast: 7.7 ft 10:00AM Mar 09, 2021Forecast: 5.6 ft 11:00AM Mar 09, 2021Forecast: 3.3 ft 12:00PM Mar 09, 2021Forecast: 1.3 ft 1:00PM Mar 09, 2021Forecast: 0.4 ft 2:00PM Mar 09, 2021Forecast: 0.7 ft 3:00PM Mar 09, 2021Forecast: 1.6 ft 4:00PM Mar 09, 2021Forecast: 3.2 ft 5:00PM Mar 09, 2021Forecast: 5.3 ft 6:00PM Mar 09, 2021Forecast: 7.3 ft 7:00PM Mar 09, 2021Forecast: 8.5 ft 8:00PM Mar 09, 2021Forecast: 8.8 ft 9:00PM Mar 09, 2021Forecast: 8 ft 10:00PM Mar 09, 2021Forecast: 6.4 ft 11:00PM Mar 09, 2021Forecast: 4.4 ft 12:00AM Mar 10, 2021Forecast: 2.6 ft 1:00AM Mar 10, 2021Forecast: 1.4 ft 2:00AM Mar 10, 2021Forecast: 1.1 ft 3:00AM Mar 10, 2021Forecast: 2.2 ft 4:00AM Mar 10, 2021Forecast: 3.7 ft 5:00AM Mar 10, 2021Forecast: 5.8 ft 6:00AM Mar 10, 2021Forecast: 7.9 ft 7:00AM Mar 10, 2021Forecast: 9.6 ft 8:00AM Mar 10, 2021Highest Forecast: 10.1 ft 9:00AM Mar 10, 2021Forecast: 9.6 ft 10:00AM Mar 10, 2021Forecast: 7.9 ft 11:00AM Mar 10, 2021Forecast: 5.7 ft 12:00PM Mar 10, 2021Forecast: 3.2 ft 1:00PM Mar 10, 2021Forecast: 1.3 ft 2:00PM Mar 10, 2021Forecast: 0.3 ft 3:00PM Mar 10, 2021Forecast: 0.5 ft 4:00PM Mar 10, 2021Forecast: 1.5 ft 5:00PM Mar 10, 2021Forecast: 3.4 ft 6:00PM Mar 10, 2021Forecast: 5.6 ft 7:00PM Mar 10, 2021Forecast: 7.6 ft 8:00PM Mar 10, 2021Forecast: 8.6 ft 9:00PM Mar 10, 2021Forecast: 8.8 ft 10:00PM Mar 10, 2021Forecast: 7.8 ft 11:00PM Mar 10, 2021Forecast: 6.1 ft 12:00AM Mar 11, 2021Forecast: 4.1 ft 1:00AM Mar 11, 2021Forecast: 2.2 ft 2:00AM Mar 11, 2021Forecast: 1 ft 3:00AM Mar 11, 2021Forecast: 1.1 ft 4:00AM Mar 11, 2021Forecast: 2 ft 5:00AM Mar 11, 2021Forecast: 3.5 ft 6:00AM Mar 11, 2021Forecast: 5.6 ft 7:00AM Mar 11, 2021Forecast: 7.9 ft 8:00AM Mar 11, 2021Forecast: 9.4 ft 9:00AM Mar 11, 2021Forecast: 9.8 ft 10:00AM Mar 11, 2021Forecast: 9.1 ft 11:00AM Mar 11, 2021Forecast: 7.5 ft 12:00PM Mar 11, 2021Forecast: 5.4 ft 1:00PM Mar 11, 2021Forecast: 3 ft 2:00PM Mar 11, 2021Forecast: 1.2 ft 3:00PM Mar 11, 2021SCTM3(plotting HMIRP) Graph Created (8:00PM Mar 8, 2021)Forecast (issued 4:19PM Mar 8)Flood Stage is 11.5 ft
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Tabular Data (UTC)
Tabular Data (EST)
XML Data
RSS Files
Datum: Not Available
NOTE: Please refer to our Coastal Hazard Message for specific information regarding Coastal Flood Watches, Warnings and Advisories. Actual impacts from any coastal flooding event may vary due to factors such as rainfall, wave action, and the number of tide cycles during which there is an onshore flow. During tropical cyclones, please refer here for additional storm surge information.

NOTE: During a Tropical Storm or Hurricane Watch or Warning, inundation mapping provided by the National Hurricane Center (go to the web site and select the storm of interest) reflects a plausible worst case scenario. The forecast above is the total water forecast that is most likely to occur.

NOTE: Forecasts for the Massachusetts Bay at Scituate (IN MLLW) are issued routinely year-round.

Vertical Datum references a tidal datum...for more information see Tides and Currents .

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Flood Categories (in feet)
Major Flood Stage: 15.5
Moderate Flood Stage: 13.5
Flood Stage: 11.5
Action Stage: 11
Low Stage (in feet): -9999

Historic Crests
(1) 14.78 ft on 01/04/2018
(2) 14.59 ft on 03/03/2018
(3) 14.36 ft on 03/02/2018
(4) 13.84 ft on 01/30/2018
(5) 13.07 ft on 01/12/2012
(6) 13.02 ft on 01/02/2010
(7) 12.96 ft on 03/01/2010
(8) 12.96 ft on 03/04/2010
(9) 12.81 ft on 01/21/2011
(10) 12.78 ft on 01/20/2019
Show More Historic Crests

(P): Preliminary values subject to further review.

Recent Crests
(1) 12.25 ft on 02/02/2021 (P)
(2) 11.93 ft on 02/02/2021 (P)
(3) 11.57 ft on 01/16/2021 (P)
(4) 11.74 ft on 12/14/2020 (P)
(5) 11.55 ft on 04/21/2019
(6) 11.64 ft on 04/19/2019
(7) 11.51 ft on 03/23/2019
(8) 11.82 ft on 03/23/2019
(9) 12.63 ft on 03/22/2019
(10) 11.76 ft on 03/22/2019
Show More Recent Crests

(P): Preliminary values subject to further review.

Low Water Records
Currently none available.

For more information on your flood risk go to

Zoom Level:14
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Latitude/Longitude Disclaimer: The gauge location shown in the above map is the approximate location based on the latitude/longitude coordinates provided to the NWS by the gauge owner.
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If you notice any errors in the below information, please contact our Webmaster
14 Widespread flooding of coastal areas along the south shore from Cohasset to Plymouth is expected. Large swells breaking on the coastline may produce structural damage to roads and homes near the time of high tide. Evacuations and road closures may be required. Significant beach erosion is also expected.
13.5 Significant flooding of coastal areas along the South Shore from Cohasset to Plymouth is expected. Large swells breaking on the coastline may damage some immediate coastal roads and homes near the time of high tide. Evacuations and road closures may be required. Significant beach erosion is also likely.
13 Flooding is expected in low lying areas of Cohasset, Scituate and Marshfield. Some localized evaucations may be required as coastal roads become inundated. Large waves will produce beach erosion.
12.5 Minor flooding and beach erosion is expected across low lying sections of Cohasset, Scituate and Marshfield. Immediate coastal roads may be impassable for a time nearest the time of high tide.
About This Location Collapse

Latitude: 42.199444° N, Longitude: 70.720000° W, Horizontal Datum: NAD83/WGS84

River Stage
Reference Frame
Gauge Height Flood Stage Uses
NWS stage 0 ft 11.5 ft Interpreting hydrographs and NWS watch, warnings, and forecasts, and inundation maps
Vertical Datum Elevation
(gauge height = 0)
(gauge height = flood stage)
Elevation information source
NAVD88 Not Available Not Available Survey grade GPS equipment, FEMA flood plain maps, newer USGS topographic maps
NGVD 29 Not Available Not Available Older USGS topographic maps, NGVD29 benchmarks
MSL Not Available Not Available Older USGS topographic maps, MSL benchmarks
Other 0.00 11.5 Mean Lower Low Water (MLLW)
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The National Weather Service prepares its forecasts and other services in collaboration with agencies like the US Geological Survey, US Bureau of Reclamation, US Army Corps of Engineers, Natural Resource Conservation Service, National Park Service, ALERT Users Group, Bureau of Indian Affairs, and many state and local emergency managers across the country. For details, please click here.
NWS Information
National Weather Service
Boston / Norton Weather Forecast Office
46 Commerce Way
Norton, MA 02766
(508) 622-3250
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Page last modified: 30-Oct-2020 4:10 PM
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