Monday, March30, 2020
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Marine Weather and Tides
Gloucester, 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 6:25AMSunset 7:08PM Monday March 30, 2020 9:54 AM EDT (13:54 UTC) Moonrise 9:55AMMoonset 12:21AM Illumination 39% Phase: Waxing Crescent; Moon at 6 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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ANZ251 Massachusetts Bay And Ipswich Bay- 716 Am Edt Mon Mar 30 2020
.small craft advisory in effect through Tuesday evening...
Today..NE winds 10 to 15 kt, increasing to 15 to 20 kt this afternoon. Gusts up to 25 kt. Seas 5 to 8 ft. Patchy fog. A chance of showers. Vsby 1 to 3 nm.
Tonight..NE winds 15 to 20 kt, increasing to 20 to 25 kt after midnight. Gusts up to 30 kt. Seas 6 to 9 ft. Patchy fog. Showers likely. Vsby 1 to 3 nm.
Tue..NE winds 20 to 25 kt, diminishing to 15 to 20 kt in the afternoon. Gusts up to 30 kt. Seas 6 to 9 ft.
Tue night..N winds 10 to 15 kt with gusts up to 20 kt. Seas 4 to 7 ft.
Wed..N winds 10 to 15 kt with gusts up to 25 kt. Seas 4 to 7 ft.
Wed night..N winds 10 to 15 kt with gusts up to 25 kt. Seas 5 to 7 ft. A chance of showers.
Thu and Thu night..N winds 10 to 15 kt, increasing to 15 to 20 kt. Gusts up to 30 kt. Seas 4 to 7 ft. Showers likely.
Fri..NE winds 15 to 20 kt with gusts up to 30 kt. Seas 6 to 9 ft. A chance of showers.
Fri night..NE winds 10 to 15 kt with gusts up to 25 kt. Seas 8 to 11 ft. 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 716 Am Edt Mon Mar 30 2020
Synopsis for massachusetts and rhode island coastal waters.. Low pres east of the water today will move away from the waters Tue. This will be followed by a stronger low pres system Wed that will meander east of the waters Thu into Fri. The result will be persistent nne wind gusts of 20 to 30 knots and rough seas, especially by Thu and Fri. 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 Gloucester, MA
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location: 42.61, -70.66     debug


Area Discussion for - Boston, MA
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FXUS61 KBOX 301122 AFDBOX

Area Forecast Discussion National Weather Service Boston/Norton MA 722 AM EDT Mon Mar 30 2020

SYNOPSIS.

Another cool, wet late March day across southern New England. An inverted trough will bring rain showers late this morning into the afternoon. Rain showers will gradually change over to rain and snow or all snow late this afternoon and tonight. Could see up to an inch of snow accumulation across the higher elevations. Precipitation tapers off tonight. Cloud cover gradually diminishing on Tuesday. An ocean storm will result in rather cool temperatures continuing right through Friday especially across eastern Massachusetts. While most of Wednesday should be dry, a period of showers are likely sometime Thursday into Friday especially across eastern New England. We expect temperatures to moderate a bit by next weekend.

NEAR TERM /UNTIL 6 PM THIS EVENING/.

7 AM Update .

Decreased precipitation chances across southern New England this morning and added drizzle. This is a result of the lingering low level stratus in combination with the lift associated with the cutoff and easterly flow advecting air in off the ocean. Best shot for any shower activity today will be during the afternoon heading into the evening. The rest of the forecast remains on track.

Previous discussion .

Highlights .

* Cool, wet southern New England day as rain showers develop late this morning and afternoon. The higher elevations will see snow begin to mix in late in the afternoon.

* Potential for isolated thunderstorms across the eastern slopes of the Berkshires and the CT River River Valley this afternoon. Best shot in these locations for the sun to break out for a bit.

A cutoff low will rotate across the eastern Great Lakes and far southeastern Ontario today. There are two areas of low pressure to keep an eye on. The first is the low in place where the cutoff is located and the second is lifting east of Cape Cod and the Islands. This will keep the majority of the region cloudy today under stratus with rain showers spreading in late this morning and this afternoon. Best shot for any sunshine is across western MA and the CT River Valley, but this will be short lived.

Expect dry weather for part of this morning as the secondary low lifts offshore and the cutoff/primary low slide into the eastern Great Lakes. If the sunshine can break out for a bit there may be enough instability that develops in combination with the lift of the cutoff that a few thunderstorms develop. This is hinted at by the HRRR and NAM guidance across western MA and parts of CT with up to 100 J/kg of MUCAPE. Have held off from including in the latest forecast, but will be something to keep an eye on.

The combination of the inverted trough, cutoff and diurnal heating will result in scattered shower activity developing across the region beginning late this morning. Good agreement amongst deterministic and ensemble guidance. Will be cool once again due to easterly/northeasterly flow at 925 hPa. As much colder air advects in during the afternoon, 0 to -4 degree Celsius air, will see rain showers begin changing over to snow across the higher elevations.

With the low level stratus in place, expecting fairly similar highs today to Sunday. Knocked temperatures down toward the 5th percentile of guidance across much of the interior. Some uncertainty on temperatures across the CT River Valley into western MA where the sun may break out. Kept temperatures toward the 50th percentile over much of CT River Valley, but may need to be higher if sunshine lasts longer than currently anticipated. This yields readings in the upper 30s across the higher elevations and 40s inland. The CT River Valley will see readings range from the mid 40s to the low 50s.

SHORT TERM /6 PM THIS EVENING THROUGH 6 PM TUESDAY/.

Highlights

* Any rain showers changing over to rain/snow or all snow as precipitation tapers off tonight. Could see up to an inch of snow accumulation across the higher elevations. Rain will continue across southeast MA, including Cape Cod and the Islands.

* Rain ending across Cape Cod and the Islands early on Tuesday. The rest of southern New England will see decreasing cloud cover and sunshine breaking out during the afternoon. Near normal temperatures expected. The cutoff low will rotate through southern New England tonight and offshore on Tuesday. The primary low will dissipate while the secondary low lifts further offshore. The secondary lows inverted trough will rotate from southern New England to south of the region by Tuesday morning/afternoon. This will result in precipitation gradually tapering off across much of southern New England tonight, but may transition over to all snow before precipitation ends. Could see up to an inch of snow accumulation across the higher elevations. Interior areas across MA with the exception of the Boston Metro and southeast MA could see light snow accumulate on grassy surfaces.

Tonight .

Precipitation transitioning from rain to rain/snow or all snow as precipitation tapers off. This is due to an inverted trough sliding through and -3 to -6 degree Celsius 925 hPa air advecting in. Good agreement amongst deterministic guidance. Utilized a blend of the GFS and HREF for precipitation timing. Expect northeasterly winds and it may be gusty at times along the coast due to the tight pressure gradient. Low temperatures range from the upper 20s to the mid 30s.

Tuesday .

Any rain showers coming to an end across Cape Cod and the Islands during the morning. Will see decreasing cloud cover as drier air advects in due to northerly flow. May see the sunshine break out during the afternoon, but may be too optimistic given the proximity to the cutoff low nearby. If there are more clouds in place then current highs will be too warm. Right now expect temperatures in the 40s, which is normal for this time of year. Still may be breezy across Cape Cod and the Islands throughout the day out of the north/north northeast.

LONG TERM /TUESDAY NIGHT THROUGH SUNDAY/.

Highlights .

* Cool temperatures continue Wed through Fri particularly across eastern MA

* A period of showers likely Thu into Fri esp across eastern MA

* Temperatures moderate a bit by next weekend

Details .

Wednesday through Friday .

A classic upstream blocking pattern /-NAO/ will persist Wednesday through Friday. Vigorous northern stream energy across the northeast will allow surface low pressure to intensify off the Carolina coast Wed and slowly move east Thu into Fri. While guidance agrees that this ocean storm will remain well east of our region, the upstream blocking pattern keeps it meandering over ocean through Friday.

Despite the ocean storm being well to our east, potent closed upper level energy over New England would set up an inverted trough. While most of Wednesday will be dry, the inverted trough will likely bring a period of showers Thursday into Friday, especially across eastern MA. Low risk that a few wet snow flakes are mixed in briefly, but boundary layer looks mild so expecting mainly rain showers.

The ocean storm combined with upstream block will keep temperatures rather cool Wed/Thu and Fri. High temperatures should generally be in the 40s to the lower 50s. Best chance of breaking 50 will be in the CT River Valley with the coolest readings expected across eastern MA.

Next Weekend .

The ocean storm should finally lose its grip over our region by next weekend. This should allow height fields to rise resulting in temps moderating a bit, but nothing too warm. High temps should recover into the 50s at least away from the immediate coast and perhaps approaching 60 by Sun. Dry weather looks to dominate next weekend, but a weak front may bring a few showers sometime on Sun but not expecting a washout at this point.

AVIATION /11Z MONDAY THROUGH FRIDAY/.

Forecaster Confidence Levels .

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

12Z TAF Update .

Monday . High confidence in trends. Moderate confidence in timing.

MVFR to IFR conditions expected today as low level stratus lingers with continued NE winds. Expect it to remain shower free this morning, but drizzle is expected due to the lift from the cutoff from the west and ocean moisture advecting in. Expecting LIFR conditions to persist at ORH through the forecast per RAP/NAM/GLAMP and MOS guidance. Will have increasing chances of showers due to the combination of day time heating along with the cutoff low rotating in and interacting with an inverted trough from the secondary low. Still not out of the question that there are a few thunderstorms across far western areas, but confidence too low to include in the forecast at this point in time.

Colder air advects in this afternoon and into the evening. This will change over precipitation to snow across the higher elevations. Expect visibility reductions in areas of heavier precipitation. Gusty winds expected along coastal terminals.

Monday Night . Moderate confidence

Precipitation tapering off as the inverted trough moves farther offshore. Precipitation will linger across southeast MA, Cape Cod and the Islands as rain. Expecting some snowflakes that mix in at BOS, BED, and BAF before precipitation comes to an end. Will see gradual improvement to high IFR or MVFR toward daybreak. Gusty northeast winds continue along coastal terminals.

Tuesday . Moderate to high confidence

Gradual improvement to VFR as drier air filters in from the north. May see skies scatter out during the afternoon. Light north northeast winds. May still be a bit gusty across Cape Cod and the Islands.

KBOS Terminal . Moderate confidence in the TAF.

KBDL Terminal . Moderate to high confidence the TAF.

Outlook /Tuesday Night through Friday/ .

Tuesday Night through Wednesday: Mainly VFR, with local MVFR possible. Breezy.

Wednesday Night: Mainly VFR, with local MVFR possible. Breezy. Slight chance SHRA.

Thursday: Mainly MVFR, with areas VFR possible. Breezy. Chance SHRA.

Thursday Night: MVFR. Breezy. Chance SHRA.

Friday: Mainly MVFR, with local VFR possible. Windy with local gusts up to 30 kt. Slight chance SHRA.

MARINE. Northerly to northeasterly winds continue throughout the day. Speeds gradually increasing this afternoon into tonight as a secondary low deepens offshore. Expect rain showers to spread in from north to south as an inverted trough slides in. Will see some visibility reduction due to showers and fog. Rain continues tonight into early Tuesday as the trough gradually lifts out.

Wind speeds and gusts will gradually diminish on Tuesday as the low lifts further offshore. Seas will remain heightened through the day. Confident enough at this point in time to expand and extend Small Craft Advisories through Tuesday.

Outlook /Tuesday Night through Friday/ .

Tuesday Night: Winds less than 25 kt. Areas of rough seas. Slight chance of rain showers.

Wednesday: Moderate risk for Small Craft Advisory winds with gusts up to 25 kt. Areas of rough seas. Slight chance of rain showers.

Wednesday Night: Moderate risk for Small Craft Advisory winds with gusts up to 25 kt. Rough seas up to 10 ft. Chance of rain showers.

Thursday: Moderate risk for Small Craft Advisory winds with gusts up to 25 kt. Areas of rough seas. Chance of rain showers.

Thursday Night: Moderate risk for Small Craft Advisory winds with gusts up to 30 kt. Areas of rough seas. Rain showers likely.

Friday: Moderate risk for Small Craft Advisory winds with local gusts up to 30 kt. Rough seas up to 13 ft. Slight chance of rain showers.

BOX WATCHES/WARNINGS/ADVISORIES. CT . None. MA . None. RI . None. MARINE . Small Craft Advisory from 8 PM this evening to 8 PM EDT Tuesday for ANZ232>234. Small Craft Advisory from 5 PM this afternoon to 5 PM EDT Tuesday for ANZ230. Small Craft Advisory from 5 PM this afternoon to 8 PM EDT Tuesday for ANZ231. Small Craft Advisory until 8 AM EDT this morning for ANZ235- 237. Small Craft Advisory until 8 PM EDT Tuesday for ANZ250-251- 254>256.

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


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
44029 - Buoy A0102 - Mass. Bay/Stellwagen 8 mi111 min ENE 18 G 21 40°F 42°F9 ft1013.8 hPa
44013 - BOSTON 16 NM East of Boston, MA 18 mi65 min NE 19 G 23 41°F 43°F8 ft1014.3 hPa (+0.7)40°F
IOSN3 - Isle of Shoals, NH 25 mi55 min NE 24 G 26 38°F 1015.5 hPa (+0.4)38°F
BHBM3 - 8443970 - Boston, MA 27 mi61 min 40°F 44°F1015 hPa
44098 - Jeffrey's Ledge, NH (160) 29 mi47 min 42°F11 ft
BGXN3 - Great Bay Reserve, NH 32 mi70 min ENE 5.1 38°F 1017 hPa38°F
CMLN3 32 mi171 min NNE 18 36°F 43°F
44018 - SE Cape Cod 30NM East of Nantucket, MA 39 mi65 min NE 19 G 23 40°F 11 ft1013.5 hPa (+0.4)38°F
44030 - Buoy B0102 - Western Maine Shelf 41 mi111 min 10 ft
WELM1 - 8419317 - Wells, ME 49 mi55 min ENE 12 G 17 38°F 42°F1017.7 hPa (+0.3)

Wind History for Wells, ME
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Beverly, Beverly Municipal Airport, MA14 mi62 minNE 9 G 162.00 miFog/Mist39°F37°F93%1015.6 hPa

Link to 5 minute data for KBVY

Wind History from BVY (wind in knots)
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1 day ago3SE8SE9SE8SE7SE8E7SE8SE6SE4SE3CalmSE5S3S4SE4SE5E4E6E7SE8SE9SE9E7
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Tide / Current Tables for Gloucester Harbor (Ten Pound Island), Massachusetts
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Gloucester Harbor (Ten Pound Island)
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Mon -- 12:21 AM EDT     Moonset
Mon -- 03:44 AM EDT     8.62 feet High Tide
Mon -- 06:27 AM EDT     Sunrise
Mon -- 09:54 AM EDT     Moonrise
Mon -- 10:07 AM EDT     0.56 feet Low Tide
Mon -- 04:21 PM EDT     7.71 feet High Tide
Mon -- 07:07 PM EDT     Sunset
Mon -- 10:20 PM EDT     1.33 feet Low Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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4.15.87.38.38.67.86.34.42.71.30.612.54.15.66.97.67.56.553.52.21.41.6

Tide / Current Tables for Marblehead Channel, Massachusetts Current
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Marblehead Channel
Click for Map
Mon -- 12:21 AM EDT     Moonset
Mon -- 01:04 AM EDT     0.44 knots Max Flood
Mon -- 04:38 AM EDT     -0.00 knots Slack
Mon -- 06:28 AM EDT     Sunrise
Mon -- 07:35 AM EDT     -0.36 knots Max Ebb
Mon -- 09:55 AM EDT     Moonrise
Mon -- 11:29 AM EDT     0.00 knots Slack
Mon -- 01:32 PM EDT     0.40 knots Max Flood
Mon -- 05:05 PM EDT     -0.00 knots Slack
Mon -- 07:07 PM EDT     Sunset
Mon -- 07:50 PM EDT     -0.30 knots Max Ebb
Mon -- 11:41 PM EDT     0.00 knots Slack
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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0.30.40.40.30.2-0.1-0.3-0.3-0.4-0.3-0.3-0.10.20.40.40.30.20-0.2-0.3-0.3-0.3-0.2-0.1

Weather Map
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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.
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Wind Forecast for Boston, MA (9,2,3,4)
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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.