Saturday, April4, 2020
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Marine Weather and Tides
East Sandwich, MA

Version 3.4
NOTICE
12/16/2019 NOAA is having trouble with requests that include wind gusts. I am posting graphs without wind gusts until it gets fixed.
10/9/2019 Updated the Marine Zones.
9/4/2019 Fixed the weather maps due to NOAA moving them.
7/25/2019 New feature in the Airports section gives a link to 5 minute updates for data reports.

Sunrise 6:16AMSunset 7:11PM Saturday April 4, 2020 11:35 PM EDT (03:35 UTC) Moonrise 2:59PMMoonset 4:39AM Illumination 91% Phase: Waxing Gibbous; Moon at 12 days in cycle
NOTE: Some of the data on this page has not been verified and should be used with that in mind. It may and occasionally will, be wrong. The tide reports are by xtide and are NOT FOR NAVIGATION.
Marine Forecasts
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ANZ231 Cape Cod Bay- 1016 Pm Edt Sat Apr 4 2020
Overnight..NE winds around 5 kt. Seas 2 to 3 ft.
Sun..E winds around 5 kt, becoming S in the afternoon. Seas around 2 ft.
Sun night..SW winds 5 to 10 kt. Seas 2 to 3 ft.
Mon..NW winds around 10 kt, becoming N in the afternoon. Gusts up to 20 kt. Seas around 2 ft.
Mon night and Tue..SW winds 5 to 10 kt. Seas around 2 ft.
Tue night..S winds 5 to 10 kt, becoming se after midnight. Seas around 2 ft.
Wed..E winds 5 to 10 kt with gusts up to 25 kt. Seas 2 to 3 ft. Rain.
Wed night..E winds 5 to 10 kt with gusts up to 25 kt. Seas 2 to 3 ft. A chance of rain.
Thu..SE winds 5 to 10 kt with gusts up to 25 kt. Seas around 2 ft. A chance of showers.
Thu night..SW winds 10 to 15 kt with gusts up to 25 kt. Seas 2 to 4 ft. Showers likely. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height.
ANZ200 1016 Pm Edt Sat Apr 4 2020
Synopsis for massachusetts and rhode island coastal waters.. The powerful ocean storm will continue to slowly move away from southern new englands waters overnight. Weak high pres builds over the waters tonight and Sun with light winds turning s, then a weak cold front will cross the waters late Sun night and early Mon. High pres returns Tue, then low pres may move into the waters Wed. For information on possible hazardous weather beyond the 24-36 hour forecast period, please visit www.weather.gov/boston and follow the current hazards link above the map on the left.


7 Day Forecast for Marine Location Near East Sandwich, MA
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location: 41.75, -70.45     debug


Area Discussion for - Boston, MA
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FXUS61 KBOX 050208 AFDBOX

Area Forecast Discussion National Weather Service Boston/Norton MA 1008 PM EDT Sat Apr 4 2020

SYNOPSIS. A few brief sprinkles cannot be ruled out overnight across western and central portions of southern New England. Some sun across the east early on Sunday, but a weak cold front will bring spotty light showers Sunday afternoon and night. High pressure will bring dry weather with mild afternoon temperatures Monday into Tuesday. Fast moving low pressure will bring a cold rain for Wednesday. This will be followed by cool conditions late in the week with another period of widespread showers likely sometime Thursday afternoon and/or evening associated with a cold front.

NEAR TERM /UNTIL 6 AM SUNDAY MORNING/. 10 PM update .

Current forecast on track. Can't rule out an isolated shower across western half New Eng as weak shortwave moves over the ridge with moisture in the 850-700 mb layer. Otherwise, mainly clear skies and radiational cooling SE MA this evening may lead to patchy ground fog developing before cloud increase overnight. Lows may bottom out around 30-32 portions of SE MA and Cape Cod with period of clear skies this evening, otherwise lows upper upper 30s to lower 40s.

Previous discussion .

A ridge axis will build from the eastern Great Lakes into New England tonight. A shortwave will ride along the top of the ridge tonight. This shortwave may bring a brief sprinkle or two across across western and central portions of the CWA overnight. Regardless, mainly dry weather will persist tonight.

Light winds will allow for a good night of radiational cooling across portions of southeast New England, where there will be a break in the clouds for a time. Some of these outlying areas in southeast MA, may drop to near or perhaps even just below freezing and also may see a bit of patchy ground fog develop. Across the rest of the region, more cloud cover should hold overnight lows in the middle to upper 30s with lower 40s in the CT River valley.

SHORT TERM /6 AM SUNDAY MORNING THROUGH SUNDAY NIGHT/. Highlights

* Milder temperatures Sunday with a few brief rain showers possible late tomorrow afternoon into tomorrow night. Cloud cover decreasing late.

Sunday .

The ridge axis will build offshore on Sunday, while a trough lifts from northern Ontario into Quebec. The surface high will move offshore and the cold front associated with the low in Quebec will slide through.

Eastern areas may see the sun break out early in the day, but cloud cover will increase as the front moves in. This will also bring increasing chances of rain showers Sunday afternoon into the evening. Much of southeast MA will see rain showers linger into late Sunday night. Any of this activity will be relatively light with only a few hundredths of QPF expected.

Will be milder with 925 hPa flow being southwesterly, which will advect +5 to +8 degree Celsius air in. High temps should mainly be in the upper 50s to the lower 60s, but much cooler in the upper 40s and lower 50s on portions of the immediate coast where sea breezes are expected.

Sunday Night .

Any shower activity ending from west to east. A mid level ridge will build into the central Great Lakes. This will nudge into southern New England in wake of the front.

Cloud cover will gradually decrease from west to east and will see 0 to -2 degree Celsius cold air advection at 850 hPa. Expecting mostly clear skies across CT, western and central MA. Anticipate good radiational cooling, so have lowered temperatures toward the 20th percentile of guidance. If skies clear quicker than anticipated then will need to lower temperatures further. Expect it to be a bit warmer further east. Lows range from the low to mid 30s across western MA to the low 40s along the coast. Winds gradually becoming more west/northwest once the front slides through.

LONG TERM /MONDAY THROUGH SATURDAY/. Highlights .

* Dry and mild Mon & Tue

* A cold rain on Wed with perhaps even a brief period of wet snow in the high terrain of northern MA

* Below normal temps Thu/Fri/Sat with main threat for a period of widespread showers Thu afternoon and evening

Details .

Monday and Tuesday .

A ridge of high pressure in control at the surface coupled with dry west to northwest flow aloft will result in beautiful early spring weather. A well mixed/dry atmosphere and 925T between +6C and +8C should result in afternoon high temps between 60 and 65 in many locations both Mon & Tue. It may be a few degrees cooler in the high terrain and along portions of the coast, where a relatively weak pressure gradient may allow for sea breeze development.

Wednesday .

Low pressure across the Great Lakes Tuesday night will quickly dive southeast Wednesday, given upstream blocking pattern. This forces the surface low to our south as the shortwave crosses the region. This will increase the forcing for ascent and bring rain to the region on Wednesday. Given the surface low cutting to our south, ENE low level flow will result in a cold rain with high temps mainly in the 40s. In fact, some guidance indicates there could even be a brief period of wet snow across the high terrain of northern MA. Whether that happens or not remains to be seen, but it certainly looks like a chilly/wet day across the region.

Thursday/Friday and Saturday .

The GEFS/EPS guidance indicate a fairly deep trough over the northeast states by late in the week. The result should be temps averaging a bit below normal with highs generally in the upper 40s to the lower 50s. The main threat for a period of widespread showers will be sometime Thursday afternoon and/or evening as a surface cold front crosses the region.

AVIATION /02Z SUNDAY THROUGH THURSDAY/. Forecaster Confidence Levels .

Low - less than 30 percent. Moderate - 30 to 60 percent. High - greater than 60 percent.

00Z discussion .

Tonight and Sunday . Moderate to high confidence

Mainly VFR conditions this evening, may be replaced by a period of marginal MVFR cigs overnight across interior southern New England and perhaps near the I-95 corridor toward daybreak. A period of marginal MVFR cigs possible Sun morning should improve to VFR from northwest to southeast Sun afternoon. Light winds tonight becoming S at 5 to 15 knots on Sunday with localized sea breezes developing along portions of the coast.

KBOS Terminal . Moderate to high confidence in the TAF.

KBDL Terminal . Moderate to high confidence in the TAF.

Outlook /Monday through Thursday/ .

Monday and Tuesday: VFR.

Tuesday Night: Mainly VFR, with local MVFR possible. Slight chance RA.

Wednesday: Mainly MVFR, with local IFR possible. Breezy. RA.

Wednesday Night: MVFR/IFR conditions possible. Breezy. Slight chance SHRA.

Thursday: Mainly MVFR, with local IFR possible. Breezy. Chance SHRA.

MARINE. Northeasterly winds continue tonight, but speeds and gusts will diminish as high pressure builds in from the west relaxing the pressure gradient. Waves across Cape Cod Bay, and interior portions of the south coast will diminish below Small Craft limits late this afternoon. Seas will remain heightened tonight into tomorrow across Mass Bay and the Outer waters, but wave heights will gradually diminish as the ocean storm moves well off to the east/southeast tonight.

Winds shift to the east and eventually the south Sunday and Sunday night as the high slides through. A cold front slides in from the west which may bring some light rain showers tomorrow night along with the potential for some reduced visibility. Seas may remain heightened enough that the Small Craft needs to be extended for portions of the Outer waters.

Outlook /Monday through Thursday/ .

Monday through Monday Night: Winds less than 25 kt. Areas of seas approaching 5 ft.

Tuesday: Winds less than 25 kt. Seas locally approaching 5 ft.

Tuesday Night: Winds less than 25 kt. Chance of rain.

Wednesday: Low risk for Small Craft Advisory winds with gusts up to 25 kt. Seas locally approaching 5 ft. Rain.

Wednesday Night: Low risk for Small Craft Advisory winds with gusts up to 25 kt. Seas up to 5 ft. Chance of rain showers.

Thursday: Winds less than 25 kt. Areas of seas approaching 5 ft. Chance of rain showers.

BOX WATCHES/WARNINGS/ADVISORIES. CT . None. MA . None. RI . None. MARINE . Small Craft Advisory until 8 PM EDT Sunday for ANZ250-251-254- 255. Small Craft Advisory until 8 AM EDT Sunday for ANZ256.

SYNOPSIS . Frank/BL NEAR TERM . KJC/Frank/BL SHORT TERM . BL LONG TERM . Frank AVIATION . Frank/BL MARINE . Frank/BL


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
44090 9 mi36 min 43°F2 ft
WAXM3 - Waquoit Bay Reserve, MA 12 mi51 min NW 1 34°F 1017 hPa33°F
44020 - NANTUCKET SOUND 20 mi56 min 2 ft
BZBM3 - 8447930 - Woods Hole, MA 20 mi48 min 37°F 44°F1017.4 hPa
CHTM3 27 mi66 min NE 9.9 G 12 40°F 48°F1016.4 hPa
44018 - SE Cape Cod 30NM East of Nantucket, MA 35 mi46 min NE 3.9 G 5.8 40°F 11 ft1017.1 hPa (+0.6)33°F
NTKM3 - 8449130 - Nantucket Island, MA 37 mi48 min NNE 7 G 11 40°F 44°F1016.8 hPa
FRVM3 - 8447386 - Fall River, MA 38 mi48 min 40°F 45°F1017.5 hPa
BLTM3 - 8447387 - Borden Flats Light at Fall River, MA 39 mi48 min ENE 4.1 G 5.1 40°F 1017.4 hPa
BUZM3 - Buzzards Bay, MA 39 mi36 min ENE 12 G 12 1018.1 hPa (+0.8)
FRXM3 39 mi48 min 39°F 35°F
44013 - BOSTON 16 NM East of Boston, MA 43 mi46 min E 5.8 G 7.8 40°F 43°F10 ft1016.6 hPa (+0.3)37°F
PRUR1 46 mi54 min 41°F 34°F
NAXR1 - Narragansett Bay Reserve, RI 48 mi51 min E 5.1 39°F 1017 hPa35°F
PTCR1 - 8452951 - Potter Cove, Prudence Island, RI 48 mi48 min E 2.9 G 5.1 40°F 1017.9 hPa
NWPR1 - 8452660 - Newport, RI 49 mi48 min ENE 2.9 G 5.1 40°F 39°F1017.4 hPa

Wind History for Nantucket Island, MA
(wind in knots)    EDIT      (on/off)   Help
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Otis Air National Guard Base, MA7 mi51 minNE 410.00 miFair30°F28°F93%1017.3 hPa
Hyannis, Barnstable Municipal-Boardman Airport, MA10 mi40 minN 08.00 miFair34°F30°F85%1016.6 hPa
Plymouth, Plymouth Municipal Airport, MA19 mi44 minN 09.00 miFair30°F28°F96%1017.1 hPa
Provincetown Municipal Airport, MA22 mi40 minNE 38.00 miFair34°F32°F92%1017.5 hPa

Link to 5 minute data for KFMH

Wind History from FMH (wind in knots)
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--NE20
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NE12CalmCalmNE4NE4
1 day agoNW15
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2 days agoN12
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N11N11N11N11N11
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Tide / Current Tables for Cape Cod Canal (East Entrance), Massachusetts
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Cape Cod Canal (East Entrance)
Click for Map
Sat -- 02:15 AM EDT     0.80 feet Low Tide
Sat -- 04:38 AM EDT     Moonset
Sat -- 06:19 AM EDT     Sunrise
Sat -- 08:28 AM EDT     9.53 feet High Tide
Sat -- 02:51 PM EDT     -0.12 feet Low Tide
Sat -- 02:58 PM EDT     Moonrise
Sat -- 07:11 PM EDT     Sunset
Sat -- 09:09 PM EDT     8.91 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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3.51.80.91.22.74.76.68.39.49.48.26.34.22.10.4-0.10.82.54.56.58.18.98.57.1

Tide / Current Tables for Cape Cod Canal, Massachusetts Current
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Cape Cod Canal
Click for Map
Sat -- 12:37 AM EDT     0.03 knots Slack
Sat -- 03:34 AM EDT     3.65 knots Max Flood
Sat -- 04:39 AM EDT     Moonset
Sat -- 06:19 AM EDT     Sunrise
Sat -- 06:53 AM EDT     -0.13 knots Slack
Sat -- 09:56 AM EDT     -4.28 knots Max Ebb
Sat -- 01:04 PM EDT     0.19 knots Slack
Sat -- 02:59 PM EDT     Moonrise
Sat -- 04:15 PM EDT     4.15 knots Max Flood
Sat -- 07:11 PM EDT     Sunset
Sat -- 07:46 PM EDT     -0.19 knots Slack
Sat -- 10:32 PM EDT     -4.18 knots Max Ebb
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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-2.11.633.63.63.22.4-0.9-3-4-4.3-3.9-3-0.82.83.84.143.62.5-1.4-3.3-4.1-4.1

Weather Map
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wmap_A
GEOS Local Image of    EDIT
NOTE: East coast views moved to GEOS-16. They are experimental and not well supported by NOAA so they may not be correct so be warned. This change required redoing a large amount of the GOES code. If the image you are expecting is not showing, please let me know. You may need to use the EDIT function to update your location.
Link to Loop

Other links: Northern Pacific     Contential US     Full GOES-East
Wind Forecast for Boston, MA (23,6,7,8)
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Ground Weather Radar Station Boston, MA
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Disclaimer:
The information on this web site has not been checked for accuracy. It is for entertainment purposes only and should be independently verified before using for any other reason. There are five sources. 1) Documents and manuals from a variety of sources. These have not been checked for accuracy and in many cases have not even been read by anyone associated with L-36.com. I have no idea of they are useful or accurate, I leave that to the reader. 2) Articles others have written and submitted. If you have questions on these, please contact the author. 3) Articles that represent my personal opinions. These are intended to promote thought and for entertainment. These are not intended to be fact, they are my opinions. 4) Small programs that generate result presented on a web page. Like any computer program, these may and in some cases do have errors. Almost all of these also make simplifying assumptions so they are not totally accurate even if there are no errors. Please verify all results. 5) Weather information is from numerous of sources and is presented automatically. It is not checked for accuracy either by anyone at L-36.com or by the source which is typically the US Government. See the NOAA web site for their disclaimer. Finally, tide and current data on this site is from 2007 and 2008 data bases, which may contain even older data. Changes in harbors due to building or dredging change tides and currents and for that reason many of the locations presented are no longer supported by newer data bases. For example, there is very little tidal current data in newer data bases so current data is likely wrong to some extent. This data is NOT FOR NAVIGATION. See the XTide disclaimer for details. In addition, tide and current are influenced by storms, river flow, and other factors beyond the ability of any predictive program.