Friday, July19, 2019 L-36.com


Marine Weather and Tides
Hingham, MA

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Sunrise 5:22AMSunset 8:17PM Friday July 19, 2019 5:56 AM EDT (09:56 UTC) Moonrise 10:10PMMoonset 7:49AM Illumination 95% Phase: Waning Gibbous; Moon at 17 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- 404 Am Edt Fri Jul 19 2019
Today..NW winds around 5 kt, becoming S this afternoon. Waves 1 foot or less.
Tonight..SW winds 5 to 10 kt. Waves 1 foot or less.
Sat..SW winds 5 to 10 kt. Waves 1 foot or less.
Sat night..SW winds around 5 kt. Waves 1 foot or less.
Sun..SW winds around 5 kt. Waves 1 foot or less. A chance of showers.
Sun night..W winds around 5 kt. Waves 1 foot or less. Patchy fog. A chance of showers. Vsby 1 to 3 nm.
Mon..N winds around 5 kt. Waves 1 foot or less. A chance of showers. Vsby 1 to 3 nm.
Mon night..NE winds around 5 kt. Waves 1 foot or less. Patchy fog. Showers likely. Vsby 1 to 3 nm.
Tue..NE winds around 5 kt. Waves 1 foot or less. A chance of showers.
Tue night..S winds around 5 kt. Waves 1 foot or less. 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 404 Am Edt Fri Jul 19 2019
Synopsis for massachusetts and rhode island coastal waters.. A warm front will lift ne of the waters today which will bring increasing heat and humidity. A weak trough will cross the waters tonight that may produce a few showers. The heat and humidity will continue to build across the waters Sat and Sunday. Scattered showers and Thunderstorms may develop Sunday afternoon into Sunday night as a frontal boundary meanders across the region then becomes stationary near the south coast. The front may become the focus for showers and Thunderstorms across the southern half of the waters Mon and Tue. 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 Hingham CDP, MA
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location: 42.26, -70.89     debug


Area Discussion for - Boston, MA
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Fxus61 kbox 190904
afdbox
area forecast discussion
national weather service boston norton ma
504 am edt Fri jul 19 2019

Synopsis
Sunshine and warm temperatures arrive today, with some of the
hottest weather to affect the region in years pushing toward
the region. Dangerous heat and humidity expected this weekend,
with heat index values approaching or perhaps exceeding 110
degrees. Dry weather should dominate this weekend, but scattered
showers and a few thunderstorms are possible later Sunday and
Sunday night as a cold front crosses the region. The cold front
lingers off the south coast Monday, bringing showers and
scattered thunderstorms, then moves well offshore Tuesday. Much
more seasonable and less humid weather arrives for Monday night
through Thursday.

Near term until 6 pm this evening
A nearly stationary front remains W of the region early this
morning. Noting light n-ne winds at 08z along S coastal areas at
08z, which is keeping a good amount of low level moisture in
place with patchy, locally dense fog. Expecting the winds to
back to northerly toward daybreak, which should cut off the low
level moisture feed and allow the fog to dissipate by mid
morning.

Temps at 08z were mainly in the mid to upper 60s, but expect
those readings to rebound quickly after sunrise, especially as
the front to the SW lifts across the region. This will allow
winds to shift to s-sw by midday. Dewpoints will rise steadily,
reaching the lower 70s by this afternoon. Temps will also
respond, rising to the upper 80s to mid 90s away from the s
coast. The combination of the heat and rising humidity will
bring heat indices up to mid-upper 90s, highest across the ct
valley and NE ct as well as interior E mass, but could reach to
100 or a little above in some of the normally hotter spots.

There is quite a bit of subsidence across the region working
around the high across the southeastern u.S., but there is a
slim chance for some spotty convection that may break out
across portions of the hudson valley this afternoon. Can not
completely rule out a few thunderstorms that might reach into
the E slopes of the berkshires.

Short term 6 pm this evening through 6 pm Saturday
Tonight and Saturday...

ridging will build across the appalachians, which will keep a
general SW flow in place. Will also see higher dewpoints stream
ne across the region, especially on Saturday as they reach to
lower-mid 70s. H5 heights rise to between 588 and 590 dm, which
correspond to hot temps during the day Saturday.

Any leftover convection near the E slopes of the berkshires
should dissipate this evening. Then, for the remainder of the
night, will see low clouds move back in and fog redevelop along
the S coast and across CAPE cod and the southern waters.

Otherwise, expect w-sw winds at 5-10 kt, highest along the
coast. It will be a warm and sultry night with lows only falling
to the 70s, with the urban centers in the upper 70s.

Saturday appears to be the hottest day in several years with
high mid level heights and westerly flow aloft. Skies should be
partly to mostly sunny during the day, which will only add to
the already hot conditions. Expect dewpoints to reach the
lower-mid 70s for most areas generally near and S of the mass
pike. W-sw winds up to around 10 kt with gusts approaching 20 kt
along the S coast.

It will be a tough day on Saturday with the high heat and
humidity. Heat indices could reach between 100 and 105 across
most areas away from the S coast, but possibly as high as 110
degrees. Excessive heat warning continues for all areas off cape
cod.

Long term Saturday night through Thursday
Big picture...

zonal upper jet flow across the northern half of the usa Saturday
night. Subtropical high pressure controls the southern half of the
usa while a series of upper lows stretch from the labrador sea
across canada to the gulf of alaska. The subtropical high builds
north over the western usa Sunday through Wednesday while the gulf
of alaska upper low digs just off the pacific northwest coast.

Meanwhile, shortwave energy ejected from the north pacific upper low
races east. This shortwave merges with a closed upper low over
hudsons bay, and the combined system digs over the northeast usa.

Normal 500-mb heights for mid july are 580 to 582 dm. Forecast
heights at 591 dm trend lower Sunday as the upper trough digs in.

This trend of lowering heights continues through midweek. Based on
this, we expect above-normal temperatures Saturday night and Sunday
then a trend to near normal temperatures next week.

General agreement among the model mass and thermal fields through
Thursday, but with differences evolving midweek regarding the
departure of showers offshore. Forecast confidence is moderate-
high for the weekend, but lowering to low-moderate for Tuesday
night through Thursday.

Concerns...

Saturday night and Sunday...

high pressure over the region Saturday night diminishes Sunday. A
thermal cap of 13c at 700 mb lingers to Sunday morning, then cools
to 9-10c late Sunday afternoon with lowest values in northern mass.

Precipitable water values remain near 2 inches Saturday night and
Sunday. Total-totals hold at 50-55, sb capes 2000-4000 j kg, lifted
index -4 to -8... All signaling favorable instability. In other
circumstances it would be a slam-dunk forecast for strong
thunderstorms. But forecaster experience is to take a 700 mb 10c
seriously for suppression of convection. What does that say about
13c?
Saturday night sfc dew points will be in the mid 70s. This may be
close to daily extreme values for dew point. We have included the
daily values in the climate section below. Because of this we are
expecting nighttime min temps 75 to 80.

Daytime heating Sunday creates a mixed layer to a little higher than
800 mb. Temperatures at that level will be 17-19c, roughly equiv to
22-24c at 850 mb. This would support sfc MAX temps of 98f to 102f,
although developing clouds could knock a couple of degrees off this
mark. With the heat cap weakening but instability lingering, and a
cold front moving south in the afternoon, we see a chance for
showers tstms firing. Best chance would be in northern mass mid to
late afternoon, shifting southeast into ct-ri-se mass by evening or
early night.

The excessive heat warning and heat advisory will continue through
Sunday. The combination of heat and humidity should generate heat
index values of 103f to 110f Sunday, with 90f to 103f across the
cape and islands.

Monday through Thursday...

with the digging upper trough over the northeast, the upper flow
turns from the southwest and aligns with the surface cold front.

This should cause the front to stall south of new england. The lift-
favorable right entrance region of the upper jet will also shift
south with the digging trough, moving over southern new england and
the stalled front on Monday and Monday night. This should generate
one or more waves on the front that move past our area, bringing a
period of showers and widely scattered tstms.

Timing of the system is difficult this far out, as shown by the gfs
maintaining showers through the period while the ECMWF moves them
offshore by Tuesday morning with dry weather following. With a
progressive tilt to the upper trough, we tend to favor the drier
ecmwf solution. But either way, temperatures will be much milder
than the weekend with near seasonable temperatures and much more
tolerable dew points. Temps aloft of 12-14c suggest MAX sfc
temps mostly in the low to mid 80s.

Aviation 08z Friday through Tuesday
Forecaster confidence levels...

low - less than 30 percent.

Moderate - 30 to 60 percent.

High - greater than 60 percent.

Short term through Saturday ... Moderate confidence.

Through 12z... Expect MVFR-ifr CIGS across most areas through
daybreak, but will be lifr-vlifr across ri SE mass where areas
of fog linger. Drier air has moved in across the interior, but
still have lower clouds there. Conditions should improve toVFR
as drier air moves from NE mass to W ri and N ct by around 12z.

Today... Conditions will improve toVFR across SE areas by midday
as low clouds and fog push offshore. Winds shift to SW with
gusts up to 20 kt during the afternoon along coastal terminals.

Low risk for a few isolated showers and thunderstorms across e
slopes of the berkshires this afternoon.

Tonight... Leftover isolated thunderstorms possible this evening
across the E slopes of the berkshires which should end by 03z.

Otherwise, mainlyVFR conditions. Low clouds and areas of fog
redevelop this evening across the southern waters to E of cape
cod which will move into the immediate S coast and off of cape
cod and the ri coast. This will bring MVFR to locally lifr
conditions through the night. W-sw winds 5 to 10 kt.

Saturday... Any leftover MVFR-ifr conditions along the immediate
s coast should improve by mid morning. OtherwiseVFR
conditions. W winds back to SW during the day, from around 5 kt
inland up to around 10 kt along the coast.

Kbos terminal... Moderate confidence in taf.

Kbdl terminal... Moderate confidence in taf.

Outlook Saturday night through Tuesday ... High confidence.

Saturday night:VFR.

Sunday through Sunday night:VFR. Breezy. Chance shra, chance
tsra.

Monday: mainlyVFR, with local MVFR possible. Chance shra,
isolated tsra.

Monday night:VFR. Chance shra, isolated tsra.

Tuesday:VFR. Slight chance shra, isolated tsra.

Marine
Forecaster confidence levels...

low - less than 30 percent.

Moderate - 30 to 60 percent.

High - greater than 60 percent.

Short term through Saturday ... High confidence.

Through 12z... Areas of fog across S coastal new england and the
southern waters. Visibility will be at or below 3nm, lowest in
vicinity nantucket. Light e-ne wind flow will slowly back to n
toward daybreak.

Today and tonight... Winds will become SW during the day,
running about 10-15 knots, then will shift to W during tonight.

Seas generally 4 ft or less, highest across the southern open
waters. Areas of fog will redevelop along and off of the south
coast and across to the CAPE and islands. Visibilities could be
reduced to less than 1 mile, which should improve toward
daybreak Saturday.

Saturday... Any leftover fog should dissipate along the S coast,
but should improve by mid morning. SW winds 10-15 kt with gusts
up to 20 kt. Seas 4 ft or less, highest on the southern outer
waters.

Outlook Saturday night through Tuesday ... High confidence.

Saturday night: winds less than 25 kt. Seas locally approaching
5 ft. Patchy fog. Local visibility 1 to 3 nm.

Sunday through Sunday night: winds less than 25 kt. Seas
locally approaching 5 ft. Chance of rain showers, chance of
thunderstorms.

Monday: winds less than 25 kt. Seas locally approaching 5 ft.

Chance of rain showers, isolated thunderstorms.

Monday night: winds less than 25 kt. Chance of rain showers,
isolated thunderstorms.

Tuesday: winds less than 25 kt. Seas locally approaching 5 ft.

Chance of rain showers, isolated thunderstorms.

Climate
Record highest min temps for Saturday july 20:
bos: 75 in 2016
bdl: 73 in 1975
pvd: 77 in 1983
orh: 72 in 2013
record highs for Saturday july 20:
bos: 99 in 1991
bdl: 100 in 1991
pvd: 101 in 1991
orh: 92 in 1901
record highest min temps for Sunday july 21:
bos: 81 in 1991
bdl: 74 in 1977
pvd: 77 in 1980
orh: 73 in 1991
record highest MAX temps for Sunday july 21
bos: 102 in 1977
bdl: 101 in 1991
pvd: 102 in 1991
orh: 95 in 1926
last occurrence of 100f or higher temperatures
bos: 7 22 2011 (103f)
bdl: 7 18 2012 (100f)
pvd: 7 22 2011 (101f)
orh: 7 4 1911 (102f)
notable high dew points in past years for july 20 and july 21:
Saturday july 20
bos 76 in 2013 (last of multiple years)
bdl 76 in 2005
pvd 76 in 2013 (last of multiple years)
orh 76 in 2013
Sunday july 21
bos 76 in 1994
bdl 78 in 1972
pvd 81 in 1977 (tied for highest all-time at pvd)
orh 76 in 2011 (last of multiple years)

Box watches warnings advisories
Ct... Excessive heat warning from noon today to 8 pm edt Sunday for
ctz002>004.

Ma... Excessive heat warning from noon today to 8 pm edt Sunday for
maz002>021-026.

Heat advisory from noon today to 8 pm edt Sunday for maz022-
023.

Ri... Excessive heat warning from noon today to 8 pm edt Sunday for
riz001>007.

Marine... None.

Synopsis... Wtb evt
near term... Evt
short term... Evt
long term... Wtb
aviation... Wtb evt
marine... Wtb
climate...



Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
BHBM3 - 8443970 - Boston, MA 11 mi63 min 66°F 1012.1 hPa
44013 - BOSTON 16 NM East of Boston, MA 14 mi67 min N 9.7 G 9.7 65°F 68°F1 ft1010.7 hPa (-1.1)65°F
44029 - Buoy A0102 - Mass. Bay/Stellwagen 25 mi113 min N 7.8 G 7.8 64°F 65°F2 ft1011.5 hPa
44018 - SE Cape Cod 30NM East of Nantucket, MA 40 mi67 min N 3.9 G 5.8 65°F 2 ft1011.4 hPa (-1.0)65°F
BLTM3 - 8447387 - Borden Flats Light at Fall River, MA 41 mi57 min N 5.1 G 7 66°F 1011.8 hPa (-0.3)
FOXR1 - 8454000 - Providence, RI 41 mi57 min NE 6 G 8 66°F 72°F1011.7 hPa (-0.3)
FRVM3 - 8447386 - Fall River, MA 41 mi63 min 66°F 78°F1012.1 hPa
44090 42 mi27 min 71°F
FRXM3 42 mi63 min 66°F 65°F
CPTR1 - 8452944 - Conimicut Light, RI 45 mi57 min NNW 8 G 9.9 66°F 75°F1012.1 hPa (-0.3)
NAXR1 - Narragansett Bay Reserve, RI 49 mi72 min NE 6 66°F 1012 hPa65°F
PTCR1 - 8452951 - Potter Cove, Prudence Island, RI 49 mi57 min NNE 5.1 G 7 66°F 1012.3 hPa (+0.0)

Wind History for Borden Flats Light at Fall River, MA
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Boston, Logan International Airport, MA11 mi63 minN 610.00 miOvercast68°F57°F68%1011.9 hPa
East Milton, MA12 mi61 minNNW 5 mi62°F59°F90%1013.1 hPa
Norwood, Norwood Memorial Airport, MA16 mi64 minN 010.00 miOvercast68°F59°F73%1012 hPa
Marshfield Airport, MA16 mi82 minN 010.00 miOvercast68°F66°F94%1011.5 hPa
Beverly, Beverly Municipal Airport, MA22 mi64 minN 310.00 miOvercast64°F57°F81%1011.3 hPa

Wind History from BOS (wind in knots)
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Last 24hrNE11NE13NE16NE14
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Tide / Current Tables for Crow Point, Hingham Harbor entrance, Massachusetts
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Crow Point
Click for Map
Fri -- 01:24 AM EDT     10.28 feet High Tide
Fri -- 05:23 AM EDT     Sunrise
Fri -- 07:48 AM EDT     0.07 feet Low Tide
Fri -- 07:49 AM EDT     Moonset
Fri -- 01:59 PM EDT     9.14 feet High Tide
Fri -- 07:56 PM EDT     1.05 feet Low Tide
Fri -- 08:15 PM EDT     Sunset
Fri -- 10:09 PM EDT     Moonrise
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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910.210.18.97.14.82.40.60.10.92.54.66.88.59.18.67.35.53.41.71.11.83.45.4

Tide / Current Tables for Boston Harbor, Massachusetts Current
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Boston Harbor
Click for Map
Fri -- 01:06 AM EDT     -0.00 knots Slack
Fri -- 05:23 AM EDT     Sunrise
Fri -- 05:31 AM EDT     -1.27 knots Max Ebb
Fri -- 07:41 AM EDT     0.00 knots Slack
Fri -- 07:49 AM EDT     Moonset
Fri -- 11:00 AM EDT     1.15 knots Max Flood
Fri -- 01:38 PM EDT     -0.00 knots Slack
Fri -- 05:56 PM EDT     -1.12 knots Max Ebb
Fri -- 08:00 PM EDT     0.00 knots Slack
Fri -- 08:16 PM EDT     Sunset
Fri -- 10:09 PM EDT     Moonrise
Fri -- 11:14 PM EDT     1.08 knots Max Flood
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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0.70.1-0.4-0.8-1.1-1.2-1.2-0.70.30.91.11.10.90.4-0.2-0.6-0.9-1-1.1-0.8-00.811.1

Weather Map and Satellite Images
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GOES Local Image of Northeast    EDIT
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Wind Forecast for Boston, MA (5,6,7,8)
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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.