Tuesday, January19, 2021
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Marine Weather and Tides
Quincy, MA

Version 3.4
NOTICE
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 7:06AMSunset 4:43PM Tuesday January 19, 2021 12:57 PM EST (17:57 UTC) Moonrise 11:47AMMoonset 12:00AM Illumination 38% 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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ANZ230 Boston Harbor- 716 Am Est Tue Jan 19 2021
Today..W winds 10 to 15 kt. Waves 1 foot or less.
Tonight..W winds 10 to 15 kt. Waves 1 foot or less.
Wed..W winds 10 to 15 kt. Gusts up to 20 kt in the afternoon. Waves around 2 ft.
Wed night..NW winds 10 to 15 kt with gusts up to 20 kt. Waves around 2 ft.
Thu..SW winds 5 to 10 kt. Waves 1 foot or less. A chance of snow showers.
Thu night..SW winds around 10 kt. Waves 1 foot or less.
Fri through Sat night..NW winds 10 to 15 kt with gusts up to 25 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 716 Am Est Tue Jan 19 2021
Synopsis for massachusetts and rhode island coastal waters.. Weak high pres builds across the waters through tonight. Low pres passes into the southern waters early Wed, with high pres building in late on Wed. 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 Quincy, MA
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location: 42.27, -70.96     debug


Area Discussion for - Boston, MA
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FXUS61 KBOX 191454 AFDBOX

Area Forecast Discussion National Weather Service Boston/Norton MA 954 AM EST Tue Jan 19 2021

SYNOPSIS. Seasonably chilly but generally quiet weather is expected for most of the week. Above normal temperatures continue through tonight, until a shot of colder air on Wednesday brings blustery conditions and temperatures falling closer to normal. Mainly dry weather is anticipated, other than periodic chances of brief light snow showers/flurries, with perhaps the best chance sometime Thursday into Thursday night.

NEAR TERM /UNTIL 6 PM THIS EVENING/.

955 AM Update .

Satellite imagery at 930 AM showed clouds showed the leading edge of clouds in Wrn Mass had retreated into the Berkshires. Meanwhile the overall motion of the cloud mass was still west to east. A patch of mid clouds over NE Mass was also trending eastward and over the Gulf of Maine.

The forecast grids were adjusted to show the farther westward start of the incoming clouds. Expect a longer period of sun before the increasing clouds. Maintained 15 pct POPs in western and northcentral MA this afternoon.

No other changes. Overall, a dry seasonably mild day with more clouds during the afternoon.

Previous discussion .

Broad zonal-cyclonic, northern-stream dominated flow governs the mid-levels across much of New England early this morning. A weak surface ridge of high pressure over the Poconos/lower Hudson Valley will continue to build east into south-coastal Southern New England early today, which will tend to shift/back surface winds from WNW to W/WSW as the day progresses. Meanwhile, a weak Clipper low near the U.P. of MI early this AM is projected to translate east into the St. Lawrence River Valley by the afternoon. This feature will draw some of the moisture/low-cloudiness prevalent across the Finger Lakes region in NY into the northern Allegheny Mtns in PA into our area by the afternoon, especially across interior MA, CT into northern and central RI.

So we should see a steady increase in cloud cover. Some higher- res guidance blossoms some convective snow showers this afternoon mainly west of I-495 between 17-22z, driven by steep low-level lapse rates and shallow instability depicted in model forecast soundings. As this shallow instability extends into the snow growth region per BUFKIT, any location that gets snow showers could see a quick drop in visibility. However there are a number of mitigating factors that may limit any pop-up snow showers to isolated at best, among them being weak/subtle shortwave energy and a well-mixed sub-cloud PBL that could support virga/precip struggling to reach the ground. Will only carry 15-20% PoPs for isolated snow showers mainly from the MA portion of the CT Valley to Worcester as well as the hills in Tolland and northern Windham in CT. It is a bit less clear if any of this isolated snow showers make it into eastern MA, though the most recent HRRR seems to think it is possible. Any snow showers would be highly localized with a coating to up to an inch possible; however many locations will see increasing clouds but largely dry today.

Highs today in the mid 30s to lower 40s. With more anticipated cloudiness temps should be a little cooler than yesterday but only slightly. Westerly breezes develop towards mid-morning with gusts 20 mph.

SHORT TERM /6 PM THIS EVENING THROUGH 6 PM WEDNESDAY/. Tonight:

Weak shortwave ridging aloft should bring about a period of at least partial clearing early tonight through midnight. However a stronger mid-level shortwave/vort max pulls ESE off the Great Lakes and brings about another increase in cloudiness late in the overnight into the early-Wed AM hrs mainly across the Berkshires, CT Valley into eastern CT. Modest SW winds and partly to mostly cloudy conditions should help keep lows in the mid/upper-20s for most, lower 30s Cape Cod/Islands.

Wednesday:

Strong shortwave trough associated with a cold pool at 500 mb at around -40F digs southeastward into south-coastal Southern New England thru the late-morning/early afternoon hrs. The cold pool aloft and steep low-level lapse rates could again support a period of brief snow showers, but not much moisture to work with and soundings below cloud base again look well-mixed. Again not anticipating much accumulation - a coating to an inch.

As the trough pulls eastward into the afternoon, it ushers in a shot of much colder air than we've seen of late (e.g. 925 mb temps fall to -8 to -12C) for the second half of the day. This will keep lapse rates steep and while any snow showers should have ended, it will turn breezy/blustery with NW gusts around 25-30 mph for most thru afternoon. Highs should occur into the early-mid afternoon in the upper 20s to mid/upper 30s, then falling in the stronger cold advection late in the day.

LONG TERM /WEDNESDAY NIGHT THROUGH MONDAY/. Highlights .

* Seasonably cold/quiet weather most of the week and into the weekend

* Mainly dry weather prevails, other than periodic chances of brief light snow showers/flurries; with the best chance Thu/Thu night

Details .

19/00Z guidance suite in rather good agreement with the overall synoptic pattern into Saturday. After that time, more significant detail differences arise with the handling of a mid level cutoff over the southwest USA, mainly how quickly it will be ejected into the southern stream. With the mid level flow nearly zonal most of the time into Saturday, expecting mainly weak, progressive systems to impact southern New England.

One such mid level shortwave should pass over our region late Thursday into Thursday night. This is looking like the period of greatest risk for some snow or rain showers during this portion of the forecast, as a warm front nearby adds to the lift. Moisture is more of the issue. Not looking like a significant snowfall, other than it is some snow in rather dry pattern. Mainly dry weather should prevail across southern New England into early next week.

Temperatures are expected to be near normal into early next week. This will be quite the switch from recent days, where we have been above normal most of the time. A brief return to above normal temperatures is expected some Thursday into Friday with a warm front nearby. Colder weather should return next weekend into early next week.

AVIATION /15Z TUESDAY THROUGH SATURDAY/. Forecaster Confidence Levels.

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

This afternoon: High confidence.

VFR with CLR/SCT increasing to BKN cover during the afternoon. Mid-level clouds (10K feet) in NE MA will move offshore midday, with another area of clouds moving in later this afternoon.

Local light snow showers possible in Western and NCentral MA during the afternoon, otherwise dry weather. West winds around 10 kt with a few gusts to 20 kt.

Tonight: High confidence.

VFR, with lowering/thickening VFR clouds western MA/CT after 09z. WSW winds 4-8 kt.

Wednesday: High confidence.

Mainly VFR, though ceilings again lower to borderline VFR/MVFR levels as a disturbance passes across the southern waters thru early aftn. May see periods of isolated/scattered -SHSN early to mid- day with brief MVFR/IFR vsbys, but not expected to be widespread. Improving trends by aftn. WSW winds shift to WNW late-AM/early-PM and increase to 10-15 kt with gusts 20-25 kt.

KBOS TAF . High confidence in TAF.

KBDL TAF . High confidence in TAF.

Outlook /Wednesday Night through Saturday/ .

Wednesday Night: VFR. Windy with local gusts up to 35 kt.

Thursday: Mainly VFR, with local MVFR possible. Breezy. Chance SHSN.

Thursday Night: VFR. Breezy.

Friday: VFR.

Friday Night through Saturday: VFR. Breezy.

MARINE. Small Craft Advisories remain in effect for the southern and southeast outer waters, mainly due to lingering 5 foot seas.

On the remaining waters this afternoon, winds will gust to around 20 kt and seas will be 2-4 ft. These conditions continue tonight.

For Wednesday, latest guidance show a brief lull in SCA conditions early on Wed AM (W gusts 20 kt, seas 3-5 ft). This improvement may be enough to consider dropping the SCA on the offshore zones; however it is expected that SCAs will be needed for the second half of Wed as NW winds increase to 25-30 kt and offshore seas building to 5-7 ft. For now will not extend the SCA in time in case the early-day lull in winds/seas is long enough to drop. Mariners can expect SCA conditions to resume later on Wed, however.

Outlook /Wednesday Night through Saturday/ .

Wednesday Night: Low risk for Small Craft Advisory winds with local gusts up to 30 kt. Areas of rough seas. Chance of freezing spray.

Thursday: Low risk for Small Craft Advisory winds with gusts up to 30 kt. Areas of seas approaching 5 ft. Chance of snow showers, slight chance of rain showers.

Thursday Night through Friday: Winds less than 25 kt. Areas of seas approaching 5 ft.

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

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

BOX WATCHES/WARNINGS/ADVISORIES. CT . None. MA . None. RI . None. MARINE . Small Craft Advisory until 7 AM EST Wednesday for ANZ254>256.

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


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
BHBM3 - 8443970 - Boston, MA 8 mi76 min 37°F 39°F1013.5 hPa
44013 - BOSTON 16 NM East of Boston, MA 17 mi38 min WNW 12 G 16 35°F 43°F1014.8 hPa19°F
44029 - Buoy A0102 - Mass. Bay/Stellwagen 27 mi114 min WNW 14 G 16 32°F 2 ft1014 hPa
FOXR1 - 8454000 - Providence, RI 40 mi58 min NW 8.9 G 13
PVDR1 40 mi58 min WSW 8 G 12
BLTM3 - 8447387 - Borden Flats Light at Fall River, MA 41 mi58 min W 13 G 15
FRVM3 - 8447386 - Fall River, MA 41 mi70 min 37°F 44°F1015.8 hPa
FRXM3 41 mi70 min 38°F 24°F
CPTR1 - 8452944 - Conimicut Light, RI 43 mi58 min WSW 12 G 15
44018 - SE Cape Cod 30NM East of Nantucket, MA 44 mi38 min WNW 14 G 18 34°F 44°F1013.1 hPa19°F
44090 45 mi61 min 41°F3 ft
NAXR1 - Narragansett Bay Reserve, RI 48 mi73 min WNW 7 40°F 1016 hPa23°F
PTCR1 - 8452951 - Potter Cove, Prudence Island, RI 48 mi58 min WNW 5.1 G 8.9
PRUR1 49 mi70 min 40°F 22°F

Wind History for Providence, RI
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Boston, Logan International Airport, MA8 mi64 minWNW 910.00 miA Few Clouds37°F16°F42%1014.5 hPa
East Milton, MA9 mi67 minWNW 7 G 18 mi37°F19°F48%1014.8 hPa
Norwood, Norwood Memorial Airport, MA12 mi65 minW 1010.00 miMostly Cloudy40°F19°F43%1014.6 hPa
Marshfield Airport, MA19 mi83 minNW 7 G 1410.00 miFair41°F19°F42%1014.6 hPa
Beverly, Beverly Municipal Airport, MA22 mi65 minW 1110.00 miFair35°F12°F38%1013.8 hPa
Laurence G Hanscom Field Airport, MA22 mi67 minWNW 13 G 2110.00 miFair38°F17°F43%1015.6 hPa

Link to 5 minute data for KBOS

Wind History from BOS (wind in knots)
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Tide / Current Tables for Weymouth Fore River Bridge, Massachusetts
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Weymouth Fore River Bridge
Click for Map
Tue -- 03:40 AM EST     9.13 feet High Tide
Tue -- 07:07 AM EST     Sunrise
Tue -- 09:42 AM EST     1.22 feet Low Tide
Tue -- 10:47 AM EST     Moonrise
Tue -- 03:57 PM EST     9.00 feet High Tide
Tue -- 04:42 PM EST     Sunset
Tue -- 10:06 PM EST     0.98 feet Low Tide
Tue -- 11:33 PM EST     Moonset
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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3.75.67.68.99.18.36.84.931.61.32.13.55.27.18.598.47.15.43.51.811.4

Tide / Current Tables for Boston Harbor, Massachusetts Current
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Boston Harbor
Click for Map
Tue -- 12:36 AM EST     1.01 knots Max Flood
Tue -- 03:14 AM EST     -0.00 knots Slack
Tue -- 07:08 AM EST     Sunrise
Tue -- 07:43 AM EST     -1.05 knots Max Ebb
Tue -- 09:47 AM EST     0.00 knots Slack
Tue -- 10:46 AM EST     Moonrise
Tue -- 01:04 PM EST     0.90 knots Max Flood
Tue -- 03:34 PM EST     -0.00 knots Slack
Tue -- 04:41 PM EST     Sunset
Tue -- 08:08 PM EST     -0.99 knots Max Ebb
Tue -- 10:09 PM EST     0.00 knots Slack
Tue -- 11:33 PM EST     Moonset
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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110.70.1-0.3-0.6-0.8-1-1-0.60.20.70.80.90.70.3-0.2-0.5-0.7-0.9-1-0.8-0.10.6

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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