Saturday, January23, 2021
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Marine Weather and Tides
Ocean Grove, MA

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8/26/2020 The 7 day forecast is taking about 5 seconds to load but it will eventually load. NOAA is still working on it.
8/18/2020 NOAA continues to have trouble. Wind guest will occasionally be left off graphs. I am working with NOAA to resolve the issue.
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 7:03AMSunset 4:51PM Saturday January 23, 2021 12:59 PM EST (17:59 UTC) Moonrise 1:31PMMoonset 3:35AM Illumination 79% Phase: Waxing Gibbous; Moon at 10 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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ANZ236 Narragansett Bay- 1016 Am Est Sat Jan 23 2021
.gale warning in effect through Sunday afternoon...
This afternoon..NW winds 15 to 20 kt with gusts up to 30 kt. Waves 2 to 3 ft. Light freezing spray.
Tonight..NW winds 15 to 20 kt with gusts up to 30 kt. Waves around 3 ft. Light freezing spray.
Sun..NW winds 15 to 20 kt with gusts up to 30 kt. Waves around 3 ft. Light freezing spray.
Sun night..NW winds 15 to 20 kt with gusts up to 30 kt, diminishing to 10 to 15 kt with gusts up to 20 kt after midnight. Waves 2 to 3 ft.
Mon..NW winds 5 to 10 kt. Waves 1 foot or less.
Mon night..N winds 5 to 10 kt. Waves 1 foot or less.
Tue..NE winds around 10 kt. Waves 1 foot or less. A chance of snow. Vsby 1 to 3 nm.
Tue night through Wed night..N winds 5 to 10 kt. Waves around 2 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 1016 Am Est Sat Jan 23 2021
Synopsis for massachusetts and rhode island coastal waters.. Low pres over the maritimes moves little through the weekend, while high pres over the great lakes settles over the waters by Mon. Weak low pres passes across the southern offshore waters on Tues. For additional information on possible hazardous weather for the week ahead, please visit www.weather.gov/boston/ehwo.


7 Day Forecast for Marine Location Near Ocean Grove, MA
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location: 41.74, -71.3     debug


Area Discussion for - Boston, MA
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FXUS61 KBOX 231730 AFDBOX

Area Forecast Discussion National Weather Service Boston/Norton MA 1230 PM EST Sat Jan 23 2021

SYNOPSIS. A cold and blustery weekend with possible sub-zero wind chills by Sunday morning. Winds slacken on Sunday night as high pressure builds into Southern New England through Monday night. A system passing to our south may bring a minor accumulation of snow south of the Massachusetts Turnpike on Tuesday. High pressure then becomes re-established for most of the workweek, with temperatures around seasonable levels. A coastal low near the mid-Atlantic waters on Thursday may brush our far southern areas or pass far enough south to be a miss.

NEAR TERM /UNTIL 6 PM THIS EVENING/.

1 PM update .

Arctic front continues to drop through southern New England after bringing a dusting to half inch of snow from Worcester east to the outer Cape. Showers have largely moved offshore and things should be dry the rest of the day. Winds are gusting 25 to 30 mph and will remain elevated.

Previous Discussion .

Radar showing some southeastward-moving snow showers into the Route 2 corridor and the Merrimack Valley. These will continue to pass southeast toward the North Shore/Metro Boston and offshore. As they do so however, they will briefly reduce visibility and perhaps produce a coating of new snow. Expect by mid- morning that these passing snow showers will have moved into the coastal waters.

Otherwise, considerable cloudiness and northerly winds have kept current temperatures running milder than forecast expectations. We're also still awaiting the arrival of the colder/drier air which still is back across central NY. Expect onset of cold advection around mid morning, with increasing northwest wind gusts. Didn't make any changes to temps, which appear on track.

4 AM update:

The core of a high pressure remains to our west today. While this high should be close enough to keep our weather mainly dry, it will not be quite close enough to force winds to diminish. In fact, expecting the opposite effect where the modest cold air advection will increase the gradient wind across southern New England, especially this afternoon.

Temperatures will be below normal today, with most areas not getting out of the 20s.

Cannot rule out a few snow showers or flurries this morning, especially towards the east coast.

SHORT TERM /6 PM THIS EVENING THROUGH 6 PM SUNDAY/. Not much change in conditions tonight into Sunday. Still gusty winds and turning sharply colder compared to what we have been most of this month. Minimum wind chill temperatures tonight below zero across most of southern New England. Not low enough where am thinking we would need a Wind Chill Advisory. Thinking we could see some isolated gusts up to Wind Advisory strength across the outer Cape tonight. Will let the next shift reevaluate.

LONG TERM /SUNDAY NIGHT THROUGH FRIDAY/. Highlights .

* Dry weather prevails through Monday night under high pressure.

* Light-accumulating snow mainly across western MA, CT into southern RI Tues as system passes to our south.

* High pressure returns for mid to late week with mainly dry weather; do have to monitor coastal storminess near the mid- Atlantic region Thurs that may brush our southern areas but not a sure bet.

Details:

Sunday Night into Monday:

High pressure over the Appalachians continues to build east into our area Sunday night, and remains established across Southern New England through Mon night.

For Sunday night, we should see slackening NW wind speeds early, taking longer to occur across eastern coastal MA. Good radiational cooling seems likely, especially our interior areas where winds will ease sooner than areas further east. MOS ordinarily would do fairly well in such a pattern for temperatures, but may be too cold given its assumptions that there is a snowpack; so for lows I utilized an NBM/MOS blend to not go quite as low as MOS would reflect. Brings lows mainly into the low-mid teens, with single digits across parts of the Pioneer Valley and into the Berkshires.

High pressure continues to govern on Mon, with full sun turning filtered late in the day. By evening, most areas should trend OVC in terms of sky cover. Under modest northerly winds which should turn more NNE/NE by Mon night, showed upper 20s to upper 30s highs with lows mid teens to lower 20s.

Tuesday into Tuesday Night:

Primary low pressure at 12z Tues over IL/IN, associated with a 500 mb shortwave trough which rounds the northwest periphery of a ridge axis over the coastal southeast CONUS. Shortwave aloft more or less shears out as it nears the mid-Atlantic/lower Hudson Valley region on Tues, with secondary coastal development taking shape later Tues into Tues night.

00z guidance suite seems to be coming into better agreement on what is appearing to be a light-accumulating snow for Tues into Tues evening. Of the deterministic guidance, the GFS is the furthest north and also packs a little more QPF than the ECMWF and the Canadian GEM. Shearing vort energy, limited QPF, a progressive system and high pressure to our northeast supplying dry air are also limiting factors for more appreciable accumulating snows. Opted for Chance-level PoPs across CT into western MA where the best chance for limited/minor accumulation may be on Tues with up to a couple inches of snow here, tapering to slight chance further to the north and east. NBM-based snow probs also support a light/minor accumulation of snow mainly into CT, western MA and central/southern RI. Drier air eventually wins out and shifts precip axis into our far southern waters Tues night.

Highs mid 20s to the lower-mid 30s on Tues, with lows mid teens to mid 20s.

Wednesday into Wednesday Night:

High pressure to re-build back into SNE for midweek. Despite dry weather, still some RH left behind supporting partly to mostly cloudy conditions and onshore NE flow. Highs upper 20s to the mid upper 30s with lows upper teens to mid 20s.

Thursday into Friday:

Models showing a deepening cyclone near the coastal mid-Atlantic and Carolinas on Thurs, moving eastward mainly south of 40N latitude. It remains to be seen if SNE will see any (fringe) impacts from this progged cyclone, as there's significant latitudinal spread in low centers. In terms of the operational models, the ECMWF is furthest south and would offer a continuation of dry northerly flow. The GEM and more so the GFS (furthest north/somewhat closer to SNE) would bring precip to our southern roughly third of the forecast area. Will need to keep tabs on this system and its developments, but at the moment ensembles presently support a miss or at worst a glancing blow to our southern areas.

System pulls away Thurs night with high pressure building back in for Friday supporting dry weather.

Temperatures project around seasonable levels for late-week.

AVIATION /18Z SATURDAY THROUGH THURSDAY/. Forecaster Confidence Levels.

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

18z TAF Update:

Today through Sunday Night: High confidence.

VFR. Strong gusty NW winds developing today, and lingering through Sunday. Winds diminish Sunday night.

KBOS TAF . High confidence in TAF.

KBDL TAF . High confidence in TAF.

Outlook /Monday through Wednesday/ .

Sunday Night: VFR. Windy with gusts up to 35 kt.

Monday: VFR. Breezy.

Monday Night: Mainly VFR, with local IFR possible. Slight chance SN.

Tuesday: Mainly VFR, with areas IFR possible. Breezy. Chance SN.

Tuesday Night: Mainly VFR, with local IFR possible. Breezy. Slight chance SN.

Wednesday: VFR.

MARINE.

Gusty west to northwest winds continue across the waters and linger through Sunday. Gale Warnings remain in effect through Sunday evening. The air will be cold enough where there is a concern for freezing spray across most of the coastal waters into Sunday. Decided to issue Freezing Spray Advisories for portions of the eastern coastal waters tonight due to the possibility of moderate freezing spray. Threat of freezing spray diminishes some during the day Sunday.

Outlook /Sunday Night through Wednesday/ .

Sunday Night: Low risk for gale force winds with gusts up to 35 kt. Areas of rough seas. Freezing spray.

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

Monday Night: Winds less than 25 kt. Seas locally approaching 5 ft. Local visibility 1 to 3 nm.

Tuesday: Winds less than 25 kt. Seas locally approaching 5 ft. Chance of rain, slight chance of snow. Visibility 1 to 3 nm.

Tuesday Night: Winds less than 25 kt. Areas of seas approaching 5 ft. Local visibility 1 to 3 nm.

Wednesday: Winds less than 25 kt. Seas up to 5 ft.

BOX WATCHES/WARNINGS/ADVISORIES. CT . None. MA . None. RI . None. MARINE . Freezing Spray Advisory from 9 PM this evening to 7 AM EST Sunday for ANZ231>234. Gale Warning until 6 PM EST Sunday for ANZ230>237-250-251- 254>256. Freezing Spray Advisory from 9 PM this evening to 10 AM EST Sunday for ANZ251.

SYNOPSIS . Belk/Loconto NEAR TERM . Belk/Loconto/BW SHORT TERM . Belk LONG TERM . Loconto AVIATION . Belk/Loconto/BW MARINE . Belk/Loconto


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
CPTR1 - 8452944 - Conimicut Light, RI 3 mi71 min WSW 24 G 27 29°F 40°F1011 hPa
PVDR1 5 mi71 min WNW 15 G 20 31°F 1011.7 hPa9°F
BLTM3 - 8447387 - Borden Flats Light at Fall River, MA 7 mi71 min W 23 G 28 30°F 1011 hPa
FOXR1 - 8454000 - Providence, RI 7 mi77 min N 16 G 24 30°F 39°F1011.7 hPa
FRXM3 7 mi71 min 30°F 16°F
NAXR1 - Narragansett Bay Reserve, RI 7 mi134 min NNW 9.9 32°F 1013 hPa11°F
PTCR1 - 8452951 - Potter Cove, Prudence Island, RI 7 mi71 min NNW 8 G 18 31°F 1012.2 hPa
FRVM3 - 8447386 - Fall River, MA 8 mi71 min 30°F 41°F1011.7 hPa
PRUR1 9 mi71 min 32°F 8°F
QPTR1 - 8454049 - Quonset Point, RI 12 mi71 min WNW 17 G 25 30°F 42°F1011.6 hPa
NWPR1 - 8452660 - Newport, RI 16 mi71 min WNW 13 G 21 30°F 40°F1011.6 hPa
BUZM3 - Buzzards Bay, MA 28 mi59 min WNW 22 G 24 1011.7 hPa (-0.6)
BZBM3 - 8447930 - Woods Hole, MA 37 mi71 min 32°F 39°F1010.6 hPa
WAXM3 - Waquoit Bay Reserve, MA 43 mi134 min W 8 33°F 1011 hPa16°F
BHBM3 - 8443970 - Boston, MA 45 mi77 min 30°F 40°F1009.7 hPa

Wind History for Conimicut Light, RI
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Providence, Theodore Francis Green State Airport, RI7 mi68 minNW 18 G 2510.00 miA Few Clouds and Breezy31°F10°F42%1011.5 hPa
N. Kingston / Quonset, RI11 mi69 minNW 15 G 2510.00 miA Few Clouds30°F9°F40%1011.2 hPa
Pawtucket, North Central State Airport, RI13 mi63 minWNW 10 G 2310.00 miA Few Clouds29°F11°F47%1005.7 hPa
Newport, Newport State Airport, RI14 mi66 minWNW 13 G 2210.00 miFair30°F11°F45%1011 hPa
New Bedford, New Bedford Regional Airport, MA18 mi66 minW 10 G 2310.00 miMostly Cloudy33°F12°F42%1010.6 hPa
Taunton, Taunton Municipal Airport, MA18 mi67 minWNW 15 G 2110.00 miOvercast33°F11°F40%1010.6 hPa

Link to 5 minute data for KPVD

Wind History from PVD (wind in knots)
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1 day agoSW12SW8SW8SW5W6SW7SW5W5SW4W4W3CalmCalmCalmNE3CalmW4CalmW5W4W5NW11
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Tide / Current Tables for Warren, Narragansett Bay, Rhode Island
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Warren
Click for Map
Sat -- 02:35 AM EST     Moonset
Sat -- 03:45 AM EST     4.06 feet High Tide
Sat -- 07:04 AM EST     Sunrise
Sat -- 09:18 AM EST     0.96 feet Low Tide
Sat -- 12:30 PM EST     Moonrise
Sat -- 04:07 PM EST     3.39 feet High Tide
Sat -- 04:49 PM EST     Sunset
Sat -- 09:00 PM EST     0.61 feet Low Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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1.92.63.33.943.62.61.71.2111.11.41.82.53.13.43.12.41.50.80.60.71

Tide / Current Tables for Westport River Entrance, Massachusetts Current
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Westport River Entrance
Click for Map
Sat -- 02:07 AM EST     1.89 knots Max Flood
Sat -- 02:33 AM EST     Moonset
Sat -- 04:17 AM EST     -0.01 knots Slack
Sat -- 06:43 AM EST     -2.14 knots Max Ebb
Sat -- 07:03 AM EST     Sunrise
Sat -- 11:14 AM EST     0.00 knots Slack
Sat -- 12:29 PM EST     Moonrise
Sat -- 02:36 PM EST     2.08 knots Max Flood
Sat -- 04:49 PM EST     Sunset
Sat -- 04:52 PM EST     -0.00 knots Slack
Sat -- 07:12 PM EST     -1.94 knots Max Ebb
Sat -- 11:42 PM EST     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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0.81.51.91.60.4-1-2-2.1-1.8-1.3-0.8-0.20.51.31.921.2-0.2-1.4-1.9-1.8-1.4-0.9-0.4

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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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.