Tuesday, January26, 2021
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Marine Weather and Tides
Quonochontaug, RI

Version 3.4
NOTICE
1/26/2021 -- The West Coast Satellite images havd been updated. They now use GEOS-17.
1/1/2021 -- The 7 day forecast are now working well. Thank you NOAA for your support.

Sunrise 7:02AMSunset 4:57PM Tuesday January 26, 2021 10:56 PM EST (03:56 UTC) Moonrise 3:44PMMoonset 6:33AM Illumination 99% Phase: Waxing Gibbous; Moon at 14 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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ANZ237 Block Island Sound- 1016 Pm Est Tue Jan 26 2021
Overnight..E winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 4 ft. Rain likely. Light snow likely, then a chance of light snow.
Wed..NE winds around 10 kt. Seas 2 to 4 ft. A chance of rain and light snow.
Wed night..N winds 10 to 15 kt. Gusts up to 20 kt after midnight. Seas 2 to 4 ft. A chance of showers. Vsby 1 to 3 nm.
Thu..N winds 15 to 20 kt with gusts up to 25 kt. Seas 2 to 4 ft.
Thu night through Fri night..NW winds 20 to 25 kt with gusts up to 30 kt. Seas 4 to 6 ft.
Sat and Sat night..NW winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 4 ft.
Sun..NE winds 5 to 10 kt. Seas around 2 ft. A chance of snow.
Sun night..E winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 4 ft. A chance of snow and rain. 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 Est Tue Jan 26 2021
Synopsis for massachusetts and rhode island coastal waters.. Weak low pressure passes south of new england tonight, bringing reduced vsbys in rain and snow. The low exits out to sea Wednesday with improving vsybs and modest ne wind developing. Powerful low pressure then develop off the mid atlc waters, however this storm will move out to sea, well south of new england. An arctic front blasts across the ma and ri waters Fri, accompanied by nnw gales, scattered snow showers and moderate to heavy freezing spray into Sat. Diminishing winds Sun as high pressure builds into the waters. 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 Quonochontaug, RI
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location: 41.19, -71.58     debug


Area Discussion for - Boston, MA
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FXUS61 KBOX 262326 AFDBOX

Area Forecast Discussion National Weather Service Boston/Norton MA 626 PM EST Tue Jan 26 2021

SYNOPSIS. Light snow or a wintry mix will continue tonight into Wednesday, and may change to light rain near the coast Wednesday afternoon. The coldest air of the season arrives Thursday and lasts through Saturday with bands of ocean effect snow possible near Cape Cod and Plymouth County. Temperatures should moderate early next week, but a low pressure system tracking south of New England should bring snow and rain.

NEAR TERM /THROUGH WEDNESDAY/. 625 PM Update .

Going to expand the Winter Weather Advisory to include central/ southern RI and south coastal MA where we expect to see some spotty light freezing rain later this evening. Already seeing reports of light icing across parts of southern CT and this is expected to head along the coast tonight. Forecast soundings for New Bedford show loss of ice nucleation near -20C which is supportive of freezing drizzle/light freezing rain. Not looking for a lot of icing but enough for slippery travel.

So far seeing a lot of 1-2" snowfall reports with a report of 3" in western MA. Last band of more organized snow was moving through central MA and RI and will exit the coast by 8 PM or so. Only expecting patchy light snow or wintry mix tonight as we lose what lift there was from mid level frontogenesis. New accumulations overnight should not be more than an inch or two, which will result in storm totals of 2-4" for most of area in the Winter Weather Advisory and 1-3" outside of that. Should end up with a few 4-5" totals in the higher terrain of western and north central MA - we noticed Fitchburg, MA had a few hours of moderate to heavy snow.

SHORT TERM /WEDNESDAY NIGHT THROUGH 6 PM WEDNESDAY/. Highlights

* Winter Weather Advisory in effect through 1PM Wednesday has been expanded to include all of MA west of I-95 as well as northern CT and RI for light accumulating snowfall this evening into Wednesday morning. Moderate snowfall Tuesday night will transition to light ocean-effect snow Wednesday morning.

* Ocean-effect snow-showers likely to see some rain mix in during the afternoon hours on Wednesday before transitioning back to snow Wednesday night into Thursday morning.

A deamplifying wave propagates eastward Wednesday evening producing areas of moderate snowfall ahead of a surface warm front. Antecedent dry air has made it challenging for this system to reach it's full potential in terms of accumulating snowfall. Nonetheless, forecasting 3-5" of accumulating snow across the interior with 1-3" across the coastal plain.

As this wave slides east, a secondary-low pressure system which has developed off the east coast will merge with the surface low to our west and result in a persistent northeasterly flow over southern New England through Thursday morning. This will allow for ocean- effect snow showers to occur intermittently through early Thursday afternoon. Residual warm air from the surface warm- front will result in periods of light rain mixing into this ocean-effect precipitation tomorrow afternoon. As temperatures drop overnight Wednesday into Thursday morning, expecting a transition back to light ocean-effect snow showers during this time period.

LONG TERM /WEDNESDAY NIGHT THROUGH TUESDAY/. * Shot of Arctic air Thursday - Saturday * Next storm system brings snow or rain early next week

Ocean storm still expected to pass well SE of New England Thursday, but NE flow combined with favorable low level temperature profile will support bands of ocean effect snow on Cape Cod and Plymouth County, perhaps onto Islands as well. Accumulation may be limited by surface temps in mid to upper 30s, but an inch is possible in more persistent bands.

Our first shot of true Arctic air arrives Thursday night and lasts into Saturday as, dare we sat it, a piece of the polar vortex dives SE across New England. Coldest of airmass affects area Friday and Friday night, when highs only top out in teens and lower 20s and lows Friday night fall back into single numbers and teens, with sub zero readings possible near Berkshires. Gusty NW winds (mainly during daytime) will send wind chills to between zero and 10 below zero, possibly as cold as 15 below near Berkshires and in Worcester County where Wind Chill Advisories may eventually be needed.

Upper flow remains fairly progressive so our shot of Arctic air will be relatively short lived. Pattern becomes more amplified early next week as southern stream short wave closes off over mid Atlantic region beneath weak ridging over Great Lakes. Depending upon your model of choice, closed low is forecast to track over (GFS) or just south of New England (ECMWF) sometime between Monday and Tuesday. At this point have to think the slower ECMWF solution is more reasonable since amplified patterns tend to lead to a slower systems. Will leave PoPs in for later Sunday into Tuesday, however main time frame may very well end up being later Monday into Tuesday. At this point, warming low level temps may come into play and result in a transition to rain across SE MA and RI, but it's certainly too soon to make a call on that. Ensemble members from both models show low tracks show 2 camps: one clustered near south coast and another farther offshore. Seeing a lot more spread among EC ensembles, which isn't surprising for nearly a week out in time.

AVIATION /23Z TUESDAY THROUGH SUNDAY/. Forecaster Confidence Levels.

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

00Z TAF Update: Moderate confidence, mainly due to timing.

Expecting conditions to become IFR throughout during evening as ceiling steadily lower and remain that way through Wed night. Light snow should become more intermittent as night progresses and should mix with -FZDZ at times across CT, RI, and SE MA, especially near coast. Any light snow Wed may change to rain across RI and SE MA by Wed afternoon.

KBOS TAF . Moderate confidence in TAF. Timing of flight category changes may be off by a few hours.

KBDL TAF . Moderate confidence in TAF. Timing of flight category changes may be off by a few hours.

Outlook /Thursday through Sunday/ .

Thursday: Mainly VFR, with local IFR possible. Breezy. Slight chance SHSN.

Thursday Night: VFR. Breezy.

Friday: VFR. Windy with local gusts up to 30 kt.

Friday Night through Saturday Night: VFR. Breezy.

Sunday: VFR. Slight chance SN.

MARINE. Weak low-pressure system passes southeast of New England overnight tonight. This will bring with it periods of snow/rain showers over the coastal waters. Persistent northeasterly flow through Thursday will allow these showers to continue intermittently near the coast.

Another system forms along the Carolina coast Thursday and moves out to sea south of the waters. This system will create gusty north- northwest winds that will draw much colder air across the waters. This may bring gales to the waters on Friday as well as moderate to heavy freezing spray.

Outlook /Wednesday Night through Sunday/ .

Wednesday Night: Winds less than 25 kt. Areas of seas approaching 5 ft. Chance of rain showers, chance of snow showers. Local visibility 1 to 3 nm.

Thursday: Low risk for Small Craft Advisory winds with gusts up to 25 kt. Seas up to 5 ft. Chance of rain showers, slight chance of snow showers.

Thursday Night: Strong winds with local gusts up to 30 kt. Rough seas up to 10 ft. Slight chance of snow showers.

Friday: Strong winds with gusts up to 30 kt. Rough seas up to 11 ft. Chance of snow showers.

Friday Night: Moderate risk for Small Craft Advisory winds with gusts up to 30 kt. Rough seas up to 11 ft.

Saturday: Winds less than 25 kt. Areas of rough seas.

Saturday Night: Winds less than 25 kt. Local rough seas.

Sunday: Winds less than 25 kt. Areas of seas approaching 5 ft. Slight chance of snow.

BOX WATCHES/WARNINGS/ADVISORIES. CT . Winter Weather Advisory until 1 PM EST Wednesday for CTZ003- 004. Winter Weather Advisory until 10 AM EST Wednesday for CTZ002. MA . Winter Weather Advisory until 5 AM EST Wednesday for MAZ020- 021. Winter Weather Advisory until 1 PM EST Wednesday for MAZ003>005-010>013-017-026. Winter Weather Advisory until 10 AM EST Wednesday for MAZ002- 008-009. RI . Winter Weather Advisory until 5 AM EST Wednesday for RIZ003>007. Winter Weather Advisory until 1 PM EST Wednesday for RIZ001- 002. MARINE . None.

SYNOPSIS . BL/RM/JWD NEAR TERM . JWD SHORT TERM . RM LONG TERM . JWD AVIATION . RM/JWD MARINE . RM/JWD


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
MTKN6 - 8510560 - Montauk, NY 22 mi477 min 33°F 38°F1013.9 hPa (-2.6)
NWPR1 - 8452660 - Newport, RI 26 mi477 min ENE 7 G 9.9 34°F 41°F1015.2 hPa (-1.9)
LDLC3 - New London Ledge CT - Ledge Light Weather 28 mi467 min ENE 11 G 14 31°F 1012.2 hPa18°F
44097 - Block Island, RI (154) 29 mi481 min 46°F2 ft
NLNC3 - 8461490 - New London, CT 29 mi477 min 29°F 32°F1014.4 hPa (-2.8)
QPTR1 - 8454049 - Quonset Point, RI 29 mi477 min Calm G 1.9 31°F 38°F1015.6 hPa (-2.0)
BUZM3 - Buzzards Bay, MA 32 mi477 min E 11 G 12 1015.7 hPa (-2.6)
PRUR1 32 mi477 min 33°F 27°F
NAXR1 - Narragansett Bay Reserve, RI 33 mi492 min NE 1.9 34°F 1015 hPa24°F
PTCR1 - 8452951 - Potter Cove, Prudence Island, RI 33 mi477 min Calm G 1.9 32°F 1016 hPa (-1.9)
CPTR1 - 8452944 - Conimicut Light, RI 38 mi477 min ENE 6 G 8.9 31°F 38°F1014.8 hPa (-2.2)
FRXM3 41 mi477 min 34°F 26°F
FRVM3 - 8447386 - Fall River, MA 42 mi477 min 34°F 42°F1015.3 hPa (-2.3)
BLTM3 - 8447387 - Borden Flats Light at Fall River, MA 42 mi477 min E 5.1 G 11 34°F 1015.2 hPa (-2.2)
PVDR1 42 mi477 min ESE 5.1 G 8 32°F 1015.5 hPa (-2.0)28°F
44017 - 23 Nautical Miles Southwest of Montauk Point, NY 42 mi457 min E 18 G 21 36°F 45°F1013.5 hPa34°F
FOXR1 - 8454000 - Providence, RI 44 mi477 min SE 7 G 11 32°F 39°F1015.3 hPa (-2.1)

Wind History for Newport, RI
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Block Island State Airport, RI1 mi61 minENE 1110.00 miLight Rain33°F31°F92%1011.9 hPa
Westerly, Westerly State Airport, RI16 mi64 minNE 49.00 miOvercast29°F29°F100%1012 hPa
Montauk, Montauk Airport, NY20 mi63 minENE 7 G 15 mi36°F34°F93%1011.2 hPa

Link to 5 minute data for KBID

Wind History from BID (wind in knots)
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Tide / Current Tables for Block Island (Great Salt Pond), Rhode Island
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Block Island (Great Salt Pond)
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Tue -- 05:33 AM EST     Moonset
Tue -- 05:55 AM EST     2.73 feet High Tide
Tue -- 07:02 AM EST     Sunrise
Tue -- 12:00 PM EST     0.09 feet Low Tide
Tue -- 02:43 PM EST     Moonrise
Tue -- 04:55 PM EST     Sunset
Tue -- 06:17 PM EST     2.28 feet High Tide
Tue -- 11:47 PM EST     -0.05 feet Low Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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0.20.50.91.422.62.72.51.91.20.60.20.10.20.40.91.41.92.32.21.710.40

Tide / Current Tables for Moonstone Beach, Rhode Island
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Moonstone Beach
Click for Map
Tue -- 05:34 AM EST     Moonset
Tue -- 06:01 AM EST     2.97 feet High Tide
Tue -- 07:02 AM EST     Sunrise
Tue -- 12:34 PM EST     -0.01 feet Low Tide
Tue -- 02:43 PM EST     Moonrise
Tue -- 04:55 PM EST     Sunset
Tue -- 06:22 PM EST     2.45 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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0.10.30.71.42.12.732.72.11.40.70.3000.20.71.422.42.41.91.20.60.1

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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.