Thursday, August13, 2020
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Marine Weather and Tides
Misquamicut, RI

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 5:53AMSunset 7:50PM Thursday August 13, 2020 9:35 PM EDT (01:35 UTC) Moonrise 12:30AMMoonset 3:34PM Illumination 24% Phase: Waning Crescent; Moon at 25 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- 716 Pm Edt Thu Aug 13 2020
Tonight..SE winds around 5 kt, becoming ne after midnight. Seas 1 foot or less. Patchy fog. Vsby 1 nm or less.
Fri..E winds 5 to 10 kt. Seas around 2 ft. Patchy fog. Vsby 1 nm or less.
Fri night..NE winds 10 to 15 kt. Seas 2 to 4 ft.
Sat..NE winds 15 to 20 kt with gusts up to 30 kt. Seas 3 to 5 ft.
Sat night..NE winds 15 to 20 kt, diminishing to 10 to 15 kt after midnight. Gusts up to 25 kt. Seas 4 to 6 ft. Patchy fog. Vsby 1 to 3 nm.
Sun..NE winds 10 to 15 kt, increasing to 15 to 20 kt in the afternoon. Seas 3 to 5 ft. Patchy fog. A chance of showers.
Sun night..E winds 10 to 15 kt with gusts up to 20 kt. Seas 3 to 5 ft. A chance of showers.
Mon and Mon night..NE winds 10 to 15 kt with gusts up to 20 kt, becoming nw 5 to 10 kt. Seas 3 to 4 ft. A chance of showers.
Tue and Tue night..W winds 5 to 10 kt. Seas 2 to 4 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 Pm Edt Thu Aug 13 2020
Synopsis for massachusetts and rhode island coastal waters.. A cold front will slowly slide south of the coastal waters tonight through Friday. Behind the front, high pressure nudges in from southeast canada. Will have low pressure slide south of the waters late this weekend into early next week. 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 Misquamicut, RI
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location: 41.33, -71.81     debug


Area Discussion for - Boston, MA
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FXUS61 KBOX 132342 AFDBOX

Area Forecast Discussion National Weather Service Boston/Norton MA 742 PM EDT Thu Aug 13 2020

SYNOPSIS. It will remain quite warm into Friday, but less humid as the frontal boundary pushes south of New England. High pressure building across the Canadian Maritimes will result in cooler temperatures this weekend especially across eastern Massachusetts. Low pressure may bring a period of showers sometime Sunday into Monday if it tracks close enough to the region. Regardless, expect mainly dry and seasonably warm afternoons Tuesday through Thursday.

NEAR TERM /UNTIL 6 AM FRIDAY MORNING/.

730 pm Update .

Band of showers/light rain along south coastal New England and Long Island has continued to diminish/dissipate over the past few hours. What light rain is left has been falling out of an mid cloud deck/12kft. We should continue to see a trend of this lingering light rain diminishing during the evening, remaining confined to the south coast of MA/RI and the Cape/Islands. Have a slight chance pop in that area this evening, then dry for the overnight.

Current forecast looks on track, only made minor adjustments to reflect latest trends.

Late afternoon discussion follows .

Not as hot as yesterday afternoon however many location across northern MA in the mid to upper 80s at 330 pm. Although some relief as dew pts are in the mid 50s across this region. Much more humid along the south coast of MA/RI where dew pts remain in the 65-70 range. The dividing line/frontal boundary is draped along the south coast and has acted as a focus for scattered showers this afternoon. Although upstream over LI/LI sound showers are weakening and expecting this trend to continue into this evening. So any evening showers will be confined to southern RI/MA including Cape Cod and the Islands.

Elsewhere dry weather prevails along with warm but tolerable humidity as N-NE winds continue to advect drier/less humid air southward.

Overnight . decreasing clouds except Cape Cod and the islands low clouds may develop given proximity to lingering frontal boundary. Seasonable temps with lows in the 60s, except near 70 along the south coast.

SHORT TERM /6 AM FRIDAY MORNING THROUGH FRIDAY NIGHT/. Friday .

Temps likely overachieve tomorrow given deep boundary layer mixing up to 750 mb per model soundings combined with dry soils, expect another warm day with highs in the mid to upper 80s, low 80s across eastern MA in response to NE winds. Post frontal so expecting dry weather however upslope flow across the east slopes of Berks along with some instability may yield a few afternoon showers over western CT/MA.

Otherwise dry weather prevails along with comfortable humidity by Aug standards, with dew pts in the upper 50s to lower 60s, except mid 60s along the south coast. More sunshine across eastern MA/RI with more clouds over the hilly terrain of CT into western-central MA.

Friday night .

Dry/pleasant weather during the evening but overnight as low pres south of New England develops low level NE jet develops over eastern MA with winds increasing to 15-25 mph toward daybreak Saturday. This increasing low level jet will likely bring strato-cu clouds onshore into eastern MA toward morning. Definitely cooler with lows 60-65, upper 50s possible northwest MA.

LONG TERM /SATURDAY THROUGH THURSDAY/. 4 PM Update .

Saturday .

A relatively weak rex block extending from the Great Lakes Region into Quebec Saturday morning slowly shifts eastward during the day, with southern New England being more influenced by the associated mid level trough. Looking at the surface pattern, our area is in between a surface high pressure building over the Canadian Maritimes, and low pressure south of New England and east of the Mid Atlantic States. A second low pressure system is located to the west, in the mid Ohio Valley There is model discrepancy on the track of the 2 low pressure systems, and whether or not our area is more influenced by the maritime high or the surface lows.

Either way we will likely have a brisk east/onshore/marine influenced wind, noticeably cooler, with increasing clouds in our area. Across the interior, we have a better chance for breaks of sunshine. The proximity of the low and some short wave energy could result in a few light rain/showers Saturday, with the best chances in the eastern half of our area. Will have low chance/slight chance pops there. Not expecting a washout, mainly dry but cooler weather should prevail. Highs ranging from the 70s to low 80s, warmest in the Connecticut River Valley, coolest near the eastern shoreline. Lows Saturday night in the mid 50s to mid 60s.

Sunday and Monday .

The Rex block moves further east while a deep mid level trough approaches from the west. At the surface, our area continues to be in between high pressure over the Canadian Maritimes and low pressure to our south, as the western most low from Saturday gradually makes its way eastward and off the mid Atlantic coast. Conditions for Sunday into Monday look similar to Saturday, except more guidance is leaning towards mostly cloudy skies with a chance for rain/showers even over the interior. Forecast temps reflect the forecast cloud cover combined with a second day of easterly flow- highs mainly in the 70s and low 80s, lows in the upper 50s and 60s.

Tuesday through Thursday .

Dry weather should prevail during much of this period, with high pressure building in from the west while the mid level trough axis shifts to our northeast. Might be a better chance for showers by Thursday, but a lot of uncertainty at this time. Expecting seasonably warm temperatures during this period.

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

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

2330Z Update:

Tonight . High confidence.

VFR but low risk of MVFR/IFR along the immediate south coast including Cape Cod and Islands as frontal boundary may linger across the region. Patchy very light rain possible along south coastal MA/RI and the Cape/Islands mainly until 02Z.

Friday . High confidence.

VFR conditions with slight chance of showers and isolated thunderstorms in Western MA and CT. NE winds at 5 to 10 kt.

Friday night . high confidence.

VFR to start but MVFR/IFR possible late especially across eastern MA with increasing NE winds brining low clouds onshore.

KBOS Terminal . High confidence in TAF.

KBDL Terminal . High confidence in TAF.

Outlook /Saturday through Tuesday/ .

Saturday: Mainly VFR, with areas IFR possible. Breezy. Slight chance SHRA.

Saturday Night: MVFR/IFR conditions possible. Breezy. Slight chance SHRA, patchy BR.

Sunday: MVFR/IFR conditions possible. Breezy. Chance SHRA.

Sunday Night: Mainly IFR, with areas VFR possible. Breezy. Chance SHRA, patchy BR.

Monday: Mainly VFR, with local IFR possible. Chance SHRA.

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

Tuesday: VFR.

MARINE. Tonight . light NE winds with evening showers across the southern waters. Low clouds and reduced vsby in fog possible toward morning across the Cape Cod and Nantucket waters.

Friday . NE winds, dry weather and good vsby.

Friday night . low pressure develop well south of New England, but its wind field will expand north into the MA/RI waters with NE winds 20-25 kt toward daybreak Saturday.

Outlook /Saturday through Tuesday/ .

Saturday: Moderate risk for Small Craft Advisory winds with gusts up to 30 kt. Seas up to 5 ft. Slight chance of rain showers.

Saturday Night: Low risk for Small Craft Advisory winds with gusts up to 25 kt. Areas of rough seas. Slight chance of rain showers, patchy fog.

Sunday: Winds less than 25 kt. Seas up to 5 ft. Chance of rain showers.

Sunday Night through Monday Night: Winds less than 25 kt. Areas of rough seas. Chance of rain showers.

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

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

SYNOPSIS . Nocera/NMB NEAR TERM . Nocera/NMB SHORT TERM . Nocera LONG TERM . NMB AVIATION . Nocera/NMB MARINE . Nocera/NMB


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
NLNC3 - 8461490 - New London, CT 15 mi48 min 76°F 74°F
MTKN6 - 8510560 - Montauk, NY 21 mi48 min 74°F 73°F
NWPR1 - 8452660 - Newport, RI 28 mi48 min 75°F 69°F
QPTR1 - 8454049 - Quonset Point, RI 28 mi48 min 76°F 79°F
NAXR1 - Narragansett Bay Reserve, RI 33 mi51 min WNW 1.9 72°F 1019 hPa71°F
PRUR1 33 mi48 min 73°F
PTCR1 - 8452951 - Potter Cove, Prudence Island, RI 33 mi48 min 73°F
CPTR1 - 8452944 - Conimicut Light, RI 36 mi48 min 76°F 81°F
FOXR1 - 8454000 - Providence, RI 39 mi48 min 78°F 80°F
PVDR1 39 mi48 min 78°F
BUZM3 - Buzzards Bay, MA 41 mi36 min E 2.9 G 2.9 1019.3 hPa (+0.3)
BLTM3 - 8447387 - Borden Flats Light at Fall River, MA 42 mi48 min 79°F
FRXM3 42 mi48 min 77°F
FRVM3 - 8447386 - Fall River, MA 43 mi48 min 78°F 80°F
44097 - Block Island, RI (154) 44 mi70 min 76°F1 ft
44017 - 23 Nautical Miles Southwest of Montauk Point, NY 46 mi26 min ENE 1.9 G 3.9 75°F 77°F1018.5 hPa73°F

Wind History for New London, CT
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Westerly, Westerly State Airport, RI1 mi43 minN 09.00 miFair74°F71°F91%1018.7 hPa
Groton / New London, Groton / New London Airport, CT13 mi40 minN 09.00 miFair73°F71°F94%1018.4 hPa
Block Island State Airport, RI16 mi40 minN 010.00 miPartly Cloudy72°F70°F94%1018.6 hPa
Montauk, Montauk Airport, NY18 mi42 minNNW 3 mi75°F69°F82%1018.9 hPa

Link to 5 minute data for KWST

Wind History from WST (wind in knots)
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Last 24hrSW3SW5CalmCalmCalmS3CalmCalmN4N3NE4NE7N5N4NE4E4S3SE3S3CalmSE3E3CalmCalm
1 day agoSW7SW9SW7S9SW8S7SW4S5SW5SW4SW4SW73SW5S10SW11SW11
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2 days agoSW6SW4S3S4S8S6SW4S3CalmS3S5S7SW4S6S10SW10S8S12
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Tide / Current Tables for Watch Hill Point, Rhode Island (2)
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Watch Hill Point
Click for Map
Thu -- 12:29 AM EDT     Moonrise
Thu -- 04:15 AM EDT     2.07 feet High Tide
Thu -- 05:55 AM EDT     Sunrise
Thu -- 09:44 AM EDT     0.56 feet Low Tide
Thu -- 03:33 PM EDT     Moonset
Thu -- 04:46 PM EDT     2.61 feet High Tide
Thu -- 07:48 PM EDT     Sunset
Thu -- 10:54 PM EDT     0.70 feet Low Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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11.21.51.82.121.71.30.90.60.60.711.31.72.12.52.62.421.510.80.7

Tide / Current Tables for The Race, Long Island Sound, New York Current (2) (expired 1993-12-31)
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The Race
Click for Map
Thu -- 12:30 AM EDT     Moonrise
Thu -- 01:59 AM EDT     0.00 knots Slack
Thu -- 04:24 AM EDT     1.82 knots Max Flood
Thu -- 05:56 AM EDT     Sunrise
Thu -- 07:27 AM EDT     -0.00 knots Slack
Thu -- 10:56 AM EDT     -2.14 knots Max Ebb
Thu -- 01:55 PM EDT     0.00 knots Slack
Thu -- 03:34 PM EDT     Moonset
Thu -- 04:40 PM EDT     2.14 knots Max Flood
Thu -- 07:46 PM EDT     -0.00 knots Slack
Thu -- 07:49 PM EDT     Sunset
Thu -- 11:27 PM EDT     -2.80 knots Max Ebb
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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-1.9-101.11.81.71.30.5-0.6-1.4-1.9-2.1-1.7-0.90.11.122.11.70.9-0.3-1.5-2.2-2.7

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.
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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.