Sunday, July23, 2017 L-36.com


Marine Weather and Tides
Quincy, MA

Version 3.4
What's New / NOTES
6/25/2017 - NOAA is having a major issue that impact the 7 day forecast load times. Many users are reporting problems. The issue has been reported.
5/23/2017 - Worked with NOAA again to speed up the 7 day forecast load times. Thanks to them for being responsive.
5/19/2016 - There were issues with the 3 day airport observation history. I switched to another data source. Let me know if you see any issues with the data feeds.

Sunrise 5:27AMSunset 8:13PM Sunday July 23, 2017 4:36 AM EDT (08:36 UTC) Moonrise 5:41AMMoonset 8:25PM Illumination 0% Phase: New Moon; Moon at 29 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- 429 Am Edt Sun Jul 23 2017
Today..NE winds 10 to 15 kt with gusts up to 25 kt, diminishing to 5 to 10 kt this afternoon. Waves around 2 ft.
Tonight..E winds 5 to 10 kt. Waves 1 foot or less.
Mon..E winds 10 to 15 kt, increasing to 15 to 20 kt in the afternoon. Gusts up to 25 kt. Waves 2 to 3 ft. Rain likely.
Mon night..NE winds 10 to 15 kt with gusts up to 25 kt. Waves 2 to 3 ft. A chance of showers.
Tue..NE winds around 10 kt. Gusts up to 20 kt in the morning. Waves around 2 ft.
Tue night..N winds 5 to 10 kt. Waves around 2 ft.
Wed..NE winds around 5 kt. Waves 1 foot or less.
Wed night..S winds around 5 kt. Waves 1 foot or less.
Thu..S winds 5 to 10 kt with gusts up to 20 kt. Waves 1 foot or less.
Thu night..SW winds 5 to 10 kt with gusts up to 20 kt. Waves 1 foot or less. A chance of showers. 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 429 Am Edt Sun Jul 23 2017
Synopsis for massachusetts and rhode island coastal waters.. A wave of low pres will emerge off the mid atlantic coast tonight and track east northeast across our southern waters on Mon. The low will move away from the region on Tue and be followed by high pres for Wed. The high will move east of our waters by Thu. 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 Quincy, MA
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location: 42.27, -70.96     debug


Area Discussion for - Boston, MA
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Fxus61 kbox 230755
afdbox
area forecast discussion
national weather service taunton ma
355 am edt Sun jul 23 2017

Synopsis
Rain moves off the s-coast this morning behind which conditions
improve. Partly cloudy with near-seasonable temperatures. Cooler,
damp conditions are forecast for Monday and Tuesday. High pressure
in control will bring dry and pleasant weather Wednesday and
probably into much of Thursday. Another low pressure system will
likely bring showers isolated thunderstorms to the region Thursday
night and or Friday, perhaps lingering into Saturday. Temperatures
will be below normal for most if not all of the coming week.

Near term until 6 pm this evening
4 am update...

an improving trend. Weak wave low is passing to our S along a quasi-
stationary frontal boundary roughly W to E off the nj coast. SW flow
of sub-tropical moisture ascending along and ahead, per latest radar,
a widespread area of rain that is flirting with the immediate S coast.

Have adjusted pops according. Should see this area of rain clear out
during the early morning hours. Clouds diminishing, anticipate partly
cloudy conditions beneath a cooler airmass aloft resulting in highs
around the upper 70s to low 80s. E onshore winds contributing to
cooler conditions along the coast, perhaps gusting up around 20 to
25 kts immediately behind the aforementioned low for a brief period
of time early this morning. Comfortable overall in comparison to
days past. Dewpoints dropping overnight and will continue to do
so with the N E winds during the day, some places falling into
the upper 40s with daytime mixing.

Short term 6 pm this evening through Tuesday night
Tonight through Tuesday night...

a prolonged period of cool, damp weather. Potent open wave h5 trough
sweeps through the region Monday night into Tuesday. In advance, an
interior surface low emerges Sunday night over the E great lakes,
transferring energy towards the coast and offshore across regions
of better baroclinicity Monday. Per an isallobaric response, a wedge
of high pressure settles in- between brought about by stout NE flow.

More stable, cooler airmass via a cold air damming setup, amplified
as the interior surface low weakens across the W foothills of the
appalachains Monday night and the low offshore deepens. Reminiscent
of winter, atypical as is the amplified trough pattern for mid-summer.

An over-running setup. The kinked frontal pattern across the region
with cooler, more stable air, will keep better thunderstorm chances
well S W throughout the forecast, though can't rule out some rumbles
of thunder over S W portions of new england with possible elevated
instability. Nothing strong to severe. Main concern is with torrential
rainfall. Period of heavy rain given available forcing upon deepest,
most pronounced column moisture is forecast Monday with collocation
of sub-tropical moisture influx undergoing lift along the kinked
frontal boundary beneath some weaker ascent associated with lead
shortwave energy. Will need to watch closely upon low-level convergent
winds to the front. The rest of the timeframe looks to be cool and
damp, especially Monday night into Tuesday as the mid-level dynamics
sweep the region with stronger mid- level forcing acting upon remnant,
available moisture, though more continental rather than sub-tropical.

Light showery weather is to be expected along with an abundance of
low clouds, perhaps some patchy fog.

Clearing out Tuesday night in wake of the h5 trough. Subsidence
prevailing as cooler, drier air settles S brought in by N flow
becoming light with increasing high pressure up to around 1025.

As model solutions vary, especially with respect to the magnitude
of low level convergent forcing along the frontal profile from the
ne with the GEFS suggesting +3-4 standard deviation above normal
and both the ec NAM hinting at least a 30 mph inflow, will keep it
conservative and keep close to the latest SREF output. Upstream
convective elements transitioning along the quasi-stationary boundary
s at the start of the forecast period late Sunday into Sunday night,
indications of mesoscale convective systems across pa and ny, but
then it would appear the pattern across the NE CONUS becomes more
synoptic with energy pinwheeling.

Chance to likely pops, highest Monday. Will hint at the chance of
thunder towards SW ct Monday. No special wording just yet on heavy
rain given the uncertainty and low confidence spatially as to where
heavy rain will occur.

Long term Wednesday through Saturday
Highlights...

* dry and pleasant Wed and probably into much of Thu afternoon
* unsettled wet weather likely returns by Thu night and or fri
* temps will remain below normal through the end of the week
details...

Wednesday into Thursday afternoon...

high pressure will build across the region Wed and slide east of our
area by thu. The result will be dry weather Wed and probably into
most of Thu afternoon. Temperatures should rebound from early in
the week, but still average a bit below normal for late july. Highs
should mainly be in the middle 70s to lower 80s Wed and Thu afternoons
with comfortable humidity.

Thursday night through Saturday...

a rather impressive shortwave for late july will dive southeastward
from the great lakes and carve out another northeast trough. The
approaching shortwave will likely bring a period of showers and
perhaps isolated thunderstorms to the region. Specific timing is
uncertain with most guidance currently focused on Thu night fri,
but it is possible some activity lingers into sat. Temps should
remain below normal with highs mainly in the 70s to the lower 80s.

Aviation 08z Sunday through Thursday
Forecaster confidence levels...

low - less than 30 percent.

Moderate - 30 to 60 percent.

High - greater than 60 percent.

Short term through Tuesday night ...

today... High confidence.

Vfr. Eroding CIGS this morning, sct-bkn, as last of -ra clears
out along the immediate s-shore. NE winds to which potentially
early this morning there may be a burst of 20 to 25 kts.

Tonight... High confidence.

Cigs lowering SW to NE towards MVFR-ifr as -ra begins to spread
across the region. Continued E flow with gusts up to 25 kts along
the s-coast forecast.

Monday... Moderate confidence.

MVFR-ifr CIGS with -ra. Impacts to the am push possible with ra +ra.

Potential vsby restrictions. Continued breezy NE flow with gusts up
to 25 kts.

Monday night into Tuesday... Moderate confidence.

MVFR-ifr CIGS linger with -shra dz. Lower conditions possible Monday
night with lifr. NE winds continue with gusts up to 25 kts possible
especially across E ma.

Tuesday night... Moderate confidence.

Improving towardsVFR. Winds backing N remaining breezy.

Kbos terminal...VFR. Strong E flow developing this morning. Will
hold gusts up to 20 kts but not out of the question to see gusts
to 25 kts for a brief period of time as has been observed N at
the isle of shoals off nh.

Kbdl terminal...VFR. Flow becoming E as CIGS become sct-bkn. -ra
will move into the terminal roughly around midnight into early
Monday morning.

Outlook Wednesday and Thursday ...

Wednesday and Thursday... Moderate confidence.

MainlyVFR conditions into Thursday afternoon. Potential for
deteriorating CIGS vsbys Thursday night but timing of showers,
low clouds, and fog patches are uncertain at this time.

Marine
Forecaster confidence levels...

low - less than 30 percent.

Moderate - 30 to 60 percent.

High - greater than 60 percent.

Short term through Tuesday night ...

today...

e NE winds to which potentially early this morning there may be
a burst of 20 to 25 kts across the E waters. As of 4a, isle of
shoals off nh was gusting to 26 kts. Seas no greater than 4
feet.

Tonight...

continued E flow with gusts up around 20 kts, as high as 25 kts
along the s-coast forecast. Seas no greater than 4 feet.

Monday...

widespread rain with embedded heavier showers. Could be some
visibility restrictions out on the waters. Continued breezy NE flow
with gusts up to 25 kts. Seas building to 5 feet on the S SE outer
waters.

Monday night into Tuesday...

MVFR-ifr CIGS linger with -shra dz. Lower conditions possible Monday
night with lifr. NE winds continue with gusts up to 25 kts possible
especially across E ma. Seas up to 5 feet on the E outer waters.

Tuesday night...

improving towardsVFR. Winds backing N remaining breezy. Seas
diminishing below 5 feet.

Outlook Wednesday through Thursday ...

Wednesday and Thursday... Moderate confidence.

Winds and seas should remain below small craft thresholds wed
into Thu morning with high pressure in control. As the high
pressure system moves east of the waters, south to southwest
winds may gust to between 20 and 25 knots by Thu afternoon.

Box watches warnings advisories
Ct... None.

Ma... None.

Ri... None.

Marine... None.

Synopsis... Frank sipprell
near term... Sipprell
short term... Sipprell
long term... Frank
aviation... Frank sipprell
marine... Frank sipprell


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
BHBM3 - 8443970 - Boston, MA 8 mi48 min 73°F 1006.3 hPa
44013 - BOSTON 16 NM East of Boston, MA 17 mi46 min NNE 18 G 19 71°F 69°F1 ft1006.8 hPa (-1.1)
44029 - Buoy A0102 - Mass. Bay/Stellwagen 27 mi92 min NNE 14 G 16 69°F 64°F1 ft1006.6 hPa
PVDR1 40 mi48 min Calm G 1 73°F 1006.5 hPa67°F
FOXR1 - 8454000 - Providence, RI 40 mi48 min NE 1.9 G 2.9 74°F 72°F1006 hPa
FRVM3 - 8447386 - Fall River, MA 41 mi48 min 74°F 76°F1007.2 hPa
FRXM3 41 mi48 min 73°F 69°F
BLTM3 - 8447387 - Borden Flats Light at Fall River, MA 41 mi48 min ENE 1.9 G 1.9 74°F 1005.9 hPa
CPTR1 - 8452944 - Conimicut Light, RI 43 mi48 min NE 1.9 G 2.9 73°F 76°F1006.9 hPa
44090 45 mi32 min 67°F
PTCR1 - 8452951 - Potter Cove, Prudence Island, RI 48 mi48 min NNE 1 G 1.9 72°F 1006.5 hPa
NAXR1 - Narragansett Bay Reserve, RI 48 mi111 min NE 4.1 71°F 1007 hPa69°F
PRUR1 49 mi48 min 73°F 69°F

Wind History for Providence, RI
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Boston, Logan International Airport, MA8 mi42 minNNE 1710.00 miOvercast71°F62°F73%1007.5 hPa
East Milton, MA9 mi40 minN 10 mi71°F63°F76%1008.2 hPa
Norwood, Norwood Memorial Airport, MA12 mi43 minN 010.00 miOvercast70°F68°F93%1006.9 hPa
Marshfield Airport, MA19 mi61 minN 010.00 miFair70°F68°F94%1007.1 hPa
Bedford, Hanscom Field, MA22 mi1.7 hrsN 010.00 miA Few Clouds70°F64°F82%1008.4 hPa
Beverly, Beverly Municipal Airport, MA22 mi43 minNE 11 G 2010.00 miFair70°F55°F61%1007.4 hPa

Wind History from BOS (wind in knots)
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Last 24hrW9W9W9NW7NW8NW3NE4SE5SE5E7E10E8SE6E4E3SE5S6S5S3W6NW5SE3N9NE17
1 day agoW7W6W6W6W9NW9W11W9W10W9--W10W8W12W11
G19
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W11W11W10W12W12
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2 days agoCalmW5W7W7W5W7W7NW9W8
G16
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W95N11NE4S4S4SW4W3W4NW6

Tide / Current Tables for Nut Island, Massachusetts
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Nut Island
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Sun -- 05:27 AM EDT     Sunrise
Sun -- 05:37 AM EDT     -1.51 feet Low Tide
Sun -- 05:40 AM EDT     Moonrise
Sun -- 05:47 AM EDT     New Moon
Sun -- 11:55 AM EDT     10.10 feet High Tide
Sun -- 05:50 PM EDT     -0.60 feet Low Tide
Sun -- 08:12 PM EDT     Sunset
Sun -- 08:24 PM EDT     Moonset
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
11.19.46.93.90.9-1.1-1.4-0.12.14.87.69.510.19.37.552.30.1-0.60.52.75.48.310.6

Tide / Current Tables for Boston Harbor, Massachusetts Current
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Boston Harbor
Click for Map
Sun -- 02:49 AM EDT     -1.44 knots Max Ebb
Sun -- 05:22 AM EDT     0.00 knots Slack
Sun -- 05:27 AM EDT     Sunrise
Sun -- 05:40 AM EDT     Moonrise
Sun -- 05:47 AM EDT     New Moon
Sun -- 08:33 AM EDT     1.39 knots Max Flood
Sun -- 11:16 AM EDT     -0.00 knots Slack
Sun -- 03:22 PM EDT     -1.31 knots Max Ebb
Sun -- 05:43 PM EDT     0.00 knots Slack
Sun -- 08:12 PM EDT     Sunset
Sun -- 08:24 PM EDT     Moonset
Sun -- 08:51 PM EDT     1.39 knots Max Flood
Sun -- 11:35 PM EDT     -0.00 knots Slack
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
-0.8-1.2-1.4-1.4-1.2-0.40.71.21.41.410.2-0.5-0.9-1.2-1.3-1.3-0.70.31.11.41.41.20.5

Weather Map and Satellite Images
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Weather Map
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IR Satellite Image from GEOS
east_satellite

GOES Local Image of Northeast    EDIT
Geos

Wind Forecast for Boston, MA (4,6,7,8)
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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 numerious 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.