Sunday, July5, 2020
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Marine Weather and Tides
The Pinehills, 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 5:12AMSunset 8:23PM Sunday July 5, 2020 9:35 PM EDT (01:35 UTC) Moonrise 9:06PMMoonset 5:23AM Illumination 100% Phase: Full Moon; Moon at 15 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- 716 Pm Edt Sun Jul 5 2020
Tonight..SW winds 5 to 10 kt. Seas 1 foot or less. Patchy fog. A slight chance of showers with isolated tstms this evening. Some tstms may produce gusty winds and small hail this evening. Vsby 1 to 3 nm after midnight.
Mon..NW winds 5 to 10 kt, becoming N in the afternoon. Seas around 2 ft. Patchy fog. Vsby 1 to 3 nm.
Mon night..SE winds 5 to 10 kt. Seas around 2 ft.
Tue..SE winds 5 to 10 kt. Gusts up to 20 kt in the afternoon. Seas around 2 ft.
Tue night and Wed..SW winds 5 to 10 kt with gusts up to 20 kt. Seas around 2 ft. Patchy fog. A chance of showers. Vsby 1 to 3 nm.
Wed night..SW winds 5 to 10 kt. Gusts up to 20 kt in the evening. Seas around 2 ft. Patchy fog. Vsby 1 to 3 nm.
Thu..SW winds 5 to 10 kt with gusts up to 20 kt. Seas around 2 ft.
Thu night..S winds 5 to 10 kt with gusts up to 20 kt. Seas around 2 ft. A chance of showers.
Fri..S winds 5 to 10 kt with gusts up to 20 kt. Seas 2 to 3 ft. A chance of showers and tstms.
Fri night..S winds 5 to 10 kt with gusts up to 20 kt. Seas 4 to 6 ft. A chance of showers and tstms. Winds and seas higher in and near tstms. 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 Pm Edt Sun Jul 5 2020
Synopsis for massachusetts and rhode island coastal waters.. High pres to build over the waters through Sunday. A cold front will push across the waters by Monday morning. High pressure returns for Monday afternoon into Tuesday. 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 The Pinehills, MA
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location: 41.92, -70.56     debug


Area Discussion for - Boston, MA
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FXUS61 KBOX 052354 AFDBOX

Area Forecast Discussion National Weather Service Boston/Norton MA 754 PM EDT Sun Jul 5 2020

SYNOPSIS. A weak cold front and upper-level trough will develop isolated showers and thunderstorms this evening across northeast Massachusetts. Weak high pressure follows Monday and moves off the coast Tuesday. Hot and humid conditions move in for the middle and end of next week with scattered afternoon/evening thunderstorms Wednesday through Friday. Heat Advisories may be needed. Low pressure passing to our south Saturday could bring more widespread showers and thunderstorms to the region. With abundant moisture in place late in the week, any storms could produce locally torrential rainfall.

NEAR TERM /UNTIL 6 AM MONDAY MORNING/. ** Isolated strong thunderstorms may still impact northeast MA before midnight***

750 PM update .

Sea breeze-induced isolated showers and thunderstorms have dissipated. Attention is now focused on activity associated with a southeastward-moving short wave across northern New England. A few strong/severe storms were moving from southeast VT into southern NH at this time. There is still potential for these storms to move into northeast MA and produce strong winds and hail, up until about midnight, since CAPE will be slow to subside and we have sufficient bulk shear to sustain updrafts. Main area of concern is northeast of a line from Fitchburg to Boston.

Previous discussion .

With short wave trough well to the north across southern Quebec into ME, southern periphery of mid level forcing will bleed southward into northeast MA, including the Greater Boston area and possibly westward into the Worcester Hills. This is where 12z HREF has strongest potential updrafts along with 15z SREF Craven-Brooks exceeding 20000. Models typically struggle in these weakly forced environments but we continue to think the focus for convection this evening will be in northeast MA including Greater Boston area and possibly into the Worcester Hills. Main concerns with any storms will be strong winds, hail and heavy downpours. Although can't rule out an isolated storm over southeast MA and RI.

Otherwise a mild night but more comfortable across western CT/MA in the post frontal airmass. Still humid over RI and eastern MA with low clouds and fog for Cape Cod and Islands. Surface low develops on the boundary and tracks toward the south coast. This will shift winds to the north with cooler/less humid air bleeding south late.

SHORT TERM /6 AM MONDAY MORNING THROUGH MONDAY NIGHT/. Monday .

Surface wave near Cape Cod early exits out to sea with weak high pressure building into the maritimes. This yields a light N-NE flow into the region, providing cooler temps for eastern MA with highs only in the 70s for the immediate coastline including Boston. This northeast flow is very shallow with 925 mb temps warming to +22C over western CT. This will support highs in the 80s across RI into central MA and topping out around 90 in the CT River Valley including Hartford. Not quite as humid as today with dew pts in the low to mid 60s except upper 50s in western MA. Dry weather for most of the region, the only exception is over western CT/MA where an isolated shower/T-storm possible given closer to deeper moisture/instability and low level convergence from warm front across eastern NY.

Monday night .

Mainly dry and less humid as 1023 mb maritime high builds southward into Gulf of ME and Cape Cod.

LONG TERM /TUESDAY THROUGH SUNDAY/. Highlights

* Heat and humidity returns for the middle and second half of the week - could reach 'Heat Advisory' status.

* Tropical moisture to influence Southern New England late week into next weekend.

Tuesday.

A quasi-stationary front will slowly drift from south to north across southern New England. This will give us the chance for thunderstorms during the afternoon hours. CAPE values, especially across western MA/CT, are forecasted to be between 500 and 1200 J/kg. Additionally, it doesn't appear to be a washout of a day, but an isolated heavy downpour or two are possible as PWAT values are between 1.50" and 2.00".

Wednesday though Thursday.

We begin to crank up the heat for the mid-week. Temperatures at 850mb reach +15C to +17C. Mixing to those heights, temperatures at the surface should reach well into the upper 80s to low 90s across MA/RI/CT. Dewpoints will also become uncomfortable - reaching the low 70s. This will give us a Heat Index (apparent temperature) in the middle and upper 90s, which may require a 'Heat Advisory'.

Similar to last week, diurnal heating and sufficient SBCAPE between 1000 and 1500 J/kg will allow for pop-up thunderstorms.

Friday through next weekend.

As of 2 PM Saturday the National Hurricane Center gave an area of storms off the coast of Louisiana a 40 percent chance of tropical formation over the next five days. So far, the guidance suggests it will move across northern Florida and up the east coast. The Euro brings this area of low pressure up towards southern New England earlier Saturday, while the GFS is more progressive, having the arrival on Friday. What models do agree on is that there will be anomalously high PWAT values - around 2.00" to 2.50". That is between 2 to 3 standard deviations above average. With the possibility of heavy rain for an extended period of time, the threat for flooding will be monitored. Besides the threat for heavy rainfall - swells will increase off shore for Friday into much of next weekend. Confidence remains moderate for this period of the forecast.

AVIATION /00Z MONDAY THROUGH FRIDAY/. Forecaster Confidence Levels .

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

2355Z update .

Isolated TSRA thru 04Z over northeast MA. Hail and wind gusts to 50 kt possible in these storms. Threat diminishes after 04Z. Elsewhere, VFR except IFR in low clouds/fog over Cape Cod and the Islands. IFR spreading NW into interior southeast MA but probably remaining just east of KPVD. Light wind.

Monday .

VFR with light NE winds. Low risk of isolated an isolated -TSRA over CT into western MA.

Monday night .

VFR but trending toward MVFR/IFR in western CT/MA with low risk of isolated SHRA/TSRA. Light SE winds.

KBOS Terminal . Moderate confidence in TAF. Greatest risk for TSRA 22z-01z this evening. Strong winds, large hail and brief heavy rain.

KBDL Terminal . High confidence in TAF. Mainly VFR and dry weather. Low risk of isolated SHRA/TSRA Monday afternoon and night.

Outlook /Tuesday through Friday/ .

Tuesday: Mainly MVFR, with areas VFR possible. Breezy. Chance SHRA, chance TSRA.

Tuesday Night: Mainly IFR, with local MVFR possible. Breezy. Chance SHRA, chance TSRA, patchy BR.

Wednesday: MVFR/IFR conditions possible. Breezy. Chance SHRA, chance TSRA.

Wednesday Night: Mainly VFR, with local IFR possible. Breezy. Slight chance SHRA, slight chance TSRA, patchy BR.

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

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

Friday: Mainly MVFR, with local VFR possible. Breezy. Chance SHRA, chance TSRA.

MARINE. 755 PM update .

Tonight . Weak low pressure forms on a front over southern New England. Light S-SE winds ahead of the front along with low clouds and patchy fog. Chance of a T-storm over northeast MA waters.

Monday . weak low exits into Georges Bank with light N-NE winds over MA/RI waters. Dry weather and any vsby restrictions in the morning improve in the afternoon.

Monday night . 1023 mb high over the Maritimes provides dry/tranquil weather.

Outlook /Tuesday through Friday/ .

Tuesday: Winds less than 25 kt. Chance of rain showers, chance of thunderstorms, patchy fog. Areas of visibility 1 to 3 nm.

Tuesday Night: Winds less than 25 kt. Seas locally approaching 5 ft. Chance of rain showers, patchy fog. Visibility 1 to 3 nm.

Wednesday: Winds less than 25 kt. Seas locally approaching 5 ft. Chance of thunderstorms, slight chance of rain showers, patchy fog. Visibility 1 to 3 nm.

Wednesday Night: Winds less than 25 kt. Local visibility 1 to 3 nm.

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

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

Friday: Winds less than 25 kt. Areas of rough seas. Chance of rain showers, chance of thunderstorms.

BOX WATCHES/WARNINGS/ADVISORIES. CT . None. MA . None. RI . None. MARINE . None.

SYNOPSIS . Nocera/Gaucher/GAF NEAR TERM . Nocera/GAF SHORT TERM . Nocera LONG TERM . Gaucher/GAF AVIATION . Nocera/Gaucher/GAF MARINE . Nocera/Gaucher/GAF


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
44090 13 mi39 min 66°F1 ft
WAXM3 - Waquoit Bay Reserve, MA 23 mi111 min S 2.9 69°F 1014 hPa67°F
BZBM3 - 8447930 - Woods Hole, MA 28 mi48 min 68°F 70°F1014.5 hPa
44018 - SE Cape Cod 30NM East of Nantucket, MA 30 mi46 min SE 14 G 16 62°F 3 ft1013.8 hPa (+0.3)62°F
44013 - BOSTON 16 NM East of Boston, MA 30 mi46 min SE 12 G 14 68°F 66°F3 ft1011.9 hPa (+0.4)68°F
44020 - NANTUCKET SOUND 33 mi36 min SSW 14 G 18 67°F 1013.9 hPa (+0.5)66°F
FRVM3 - 8447386 - Fall River, MA 35 mi48 min 73°F 73°F1014.5 hPa
BLTM3 - 8447387 - Borden Flats Light at Fall River, MA 36 mi48 min SSW 12 G 14 73°F 1014.1 hPa
FRXM3 36 mi48 min 73°F 70°F
CHTM3 36 mi138 min S 7 G 12 62°F 1014.2 hPa
BHBM3 - 8443970 - Boston, MA 40 mi54 min 77°F 68°F1011.8 hPa
44029 - Buoy A0102 - Mass. Bay/Stellwagen 42 mi92 min SSE 14 G 16 65°F 3 ft1010.9 hPa
BUZM3 - Buzzards Bay, MA 44 mi36 min S 15 G 16 1015.1 hPa (+0.8)
CPTR1 - 8452944 - Conimicut Light, RI 44 mi48 min 71°F 73°F1013.8 hPa
FOXR1 - 8454000 - Providence, RI 45 mi48 min S 11 G 13 72°F 71°F1013.9 hPa
PRUR1 45 mi48 min 72°F 72°F
PVDR1 45 mi48 min S 12 G 17 73°F 1014 hPa72°F
NAXR1 - Narragansett Bay Reserve, RI 46 mi111 min SSW 7 72°F 1013 hPa70°F
PTCR1 - 8452951 - Potter Cove, Prudence Island, RI 46 mi48 min SW 5.1 G 8.9 71°F 1014.5 hPa

Wind History for Borden Flats Light at Fall River, MA
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Plymouth, Plymouth Municipal Airport, MA9 mi44 minSSW 610.00 miOvercast69°F66°F93%1013.9 hPa
Marshfield Airport, MA14 mi61 minVar 4 G 1010.00 miFair73°F69°F89%1013.2 hPa
Otis Air National Guard Base, MA18 mi51 minSSW 810.00 miOvercast68°F66°F94%1014.6 hPa
Provincetown Municipal Airport, MA20 mi40 minS 710.00 miOvercast67°F66°F97%1014.4 hPa
Hyannis, Barnstable Municipal-Boardman Airport, MA22 mi40 minSSW 910.00 miOvercast71°F66°F84%1014.1 hPa
Taunton, Taunton Municipal Airport, MA24 mi44 minVar 410.00 miOvercast72°F68°F87%1013.7 hPa

Link to 5 minute data for KPYM

Wind History from PYM (wind in knots)
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Last 24hrCalmCalmSW4S5SW7SW7SW4SW5S44S4SW5SW73SW55SE45S9S7S846S6
1 day ago------------------------N7N7N6NE6NE6E7NE9NE6NE6SE6SE5SE3
2 days ago------------------------------------------------

Tide / Current Tables for Plymouth, Massachusetts
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Plymouth
Click for Map
Sun -- 12:44 AM EDT     Full Moon
Sun -- 05:13 AM EDT     Sunrise
Sun -- 05:23 AM EDT     Moonset
Sun -- 06:17 AM EDT     -1.06 feet Low Tide
Sun -- 12:19 PM EDT     9.53 feet High Tide
Sun -- 06:24 PM EDT     0.26 feet Low Tide
Sun -- 08:20 PM EDT     Sunset
Sun -- 09:06 PM EDT     Moonrise
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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11.110.18.25.72.80.3-1-0.70.93.368.39.59.38.16.341.80.40.524.37.19.6

Tide / Current Tables for Cape Cod Canal, Massachusetts Current
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Cape Cod Canal
Click for Map
Sun -- 12:44 AM EDT     Full Moon
Sun -- 12:47 AM EDT     -4.85 knots Max Ebb
Sun -- 04:03 AM EDT     0.21 knots Slack
Sun -- 05:14 AM EDT     Sunrise
Sun -- 05:24 AM EDT     Moonset
Sun -- 07:16 AM EDT     4.62 knots Max Flood
Sun -- 10:36 AM EDT     -0.02 knots Slack
Sun -- 01:18 PM EDT     -4.48 knots Max Ebb
Sun -- 04:25 PM EDT     0.03 knots Slack
Sun -- 07:27 PM EDT     4.28 knots Max Flood
Sun -- 08:19 PM EDT     Sunset
Sun -- 09:05 PM EDT     Moonrise
Sun -- 10:35 PM EDT     -0.08 knots Slack
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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-4.6-4.8-4.4-3.3-0.83.24.24.64.53.92.6-2.1-3.8-4.4-4.3-3.6-22.43.74.24.23.72.5-2.1

Weather Map
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wmap_A
GEOS Local Image of Northeast    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 (21,6,7,8)
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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.