Sunday, September24, 2017 L-36.com


Marine Weather and Tides
Salem, 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 6:32AMSunset 6:37PM Sunday September 24, 2017 6:55 PM EDT (22:55 UTC) Moonrise 10:50AMMoonset 9:21PM Illumination 19% Phase: Waxing Crescent; Moon at 4 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- 352 Pm Edt Sun Sep 24 2017
Tonight..SE winds 5 to 10 kt, becoming S after midnight. Waves 1 foot or less.
Mon..E winds around 5 kt, increasing to 5 to 10 kt in the afternoon. Waves 1 foot or less. Patchy fog. Vsby 1 nm or less.
Mon night..S winds around 5 kt. Waves 1 foot or less. Patchy fog. Vsby 1 nm or less.
Tue..SE winds around 5 kt. Waves 1 foot or less. Patchy fog. Vsby 1 nm or less.
Tue night..S winds around 5 kt. Waves 1 foot or less. Patchy fog. Vsby 1 to 3 nm.
Wed..SE winds around 5 kt. Waves 1 foot or less. Patchy fog. A chance of showers. Vsby 1 to 3 nm.
Wed night..S winds around 5 kt. Waves 1 foot or less. A chance of showers.
Thu..W winds around 5 kt. Waves 1 foot or less.
Thu night..N winds 5 to 10 kt. Waves 1 foot or less.
Fri..N winds 5 to 10 kt. Waves 1 foot or less.
Fri night..N winds 5 to 10 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 352 Pm Edt Sun Sep 24 2017
Synopsis for massachusetts and rhode island coastal waters.. High pressure over the eastern usa will bring light wind and dry weather to the waters through Tuesday. Southerly swell from hurricane maria will continue to move north into the waters and linger for much of the week. A cold front from canada will cross the waters later Wednesday or early Thursday. Mariners should Monitor the latest forecasts from the national hurricane center at www.nhc.noaa.gov. 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 Salem, MA
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location: 42.53, -70.89     debug


Area Discussion for - Boston, MA
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Fxus61 kbox 242023
afdbox
area forecast discussion
national weather service taunton ma
423 pm edt Sun sep 24 2017

Synopsis
High pressure covering much of the eastern usa will bring warm and
dry weather to southern new england the first part of this week.

Cold front approaches southern new england during Wednesday
afternoon and triggers scattered showers. Cold front slowly moves
through southern new england on Thursday and offshore Thursday
night. Maria will bring swells to the south coast, but the center is
expected to pass well southeast of new england late this week.

Near term until 6 am Monday morning
High pres brings light winds and mostly clear skies. However,
stratus deck lurking SE of new eng is expected to overspread the
cape and islands this evening with light onshore flow. The low
clouds and patchy fog may expand along the south coast but lower
confidence on areal extent of stratus and fog tonight.

Otherwise, some patchy valley fog may develop overnight in the
normally prone locations in the ct valley. Min temps mostly in
the low mid 60s.

Short term 6 am Monday morning through Monday night
Monday...

strong subtropical ridge remains in control across new eng with
sunshine and unseasonably warm conditions. However, stratus may
linger through the morning across CAPE islands. Similar
850 925 mb temps suggest temps close to today with upper 80s to
around 90 interior but cooler along the immediate coast where
sea breezes are likely.

Monday night...

as maria lifts north across SE us waters, higher pwat air and
ki values will approach sne from the east along with increasing
elevated instability. This will lead to a risk of showers across
se new eng and have chc pops for CAPE islands. Otherwise, the
guidance is indicating stratus and fog may be more expansive
across sne as higher dewpoints move in. Low temps will be in the
60s.

Long term Tuesday through Sunday
Highlights...

* very warm temperatures persist into Wednesday
* scattered showers Wednesday afternoon through Thursday night
* maria will bring swells to the south coast but will sharply
recurve out to sea southeast of new england late in the week
a weakening high pressure ridge should linger across southern
new england Tuesday into the first part of Wednesday. Light flow
will likely mean seabreezes, with lower temperatures along the
immediate coast.

A surface cold front should cross our region Wednesday night
into Thursday. Given the summer-like warmth ahead of this
front, some isolated thunderstorms are not out of the question.

The increasing southwest flow ahead of this cold front might
also be strong enough to tap into some tropical moisture from
maria. If this moisture is available, it could lead to locally
heavy downpours. Some question as to how quickly this cold front
will move offshore, particularly once it reaches the coastal
plain of ri and southeast ma.

High pressure should build in from the west Friday into
Saturday. Besides a chance of some lingering showers Friday
morning across the CAPE and islands, much of this period will be
dry. It will also be noticeably cooler, with below normal
temperatures expected.

Aviation 20z Sunday through Friday
Forecaster confidence levels...

low - less than 30 percent.

Moderate - 30 to 60 percent.

High - greater than 60 percent.

Short term through Monday night ...

through 00z...VFR, but areas of ifr stratus and patchy fog
redeveloping at ack and possibly portions of CAPE cod.

Tonight... Expect stratus and fog across CAPE islands which may
expand along the south coast during the night but confidence is
lower here.VFR elsewhere, except for patchy fog upper ct
valley.

Monday... High confidence.VFR, but areas of ifr stratus and
patchy fog may linger over CAPE and islands into the afternoon.

Uncertain timing of improving conditions over the cape.

Monday night. Moderate confidence. Ifr stratus and patchy fog
may become more expansive across sne but areal extent
uncertain.

Kbos taf... High confidence. Sea breeze redevelops by 15z mon.

Kbdl taf... High confidence in taf.

Outlook Tuesday through Friday ...

confidence... High.

Tuesday... MostlyVFR except for patchy early morning fog.

Wednesday... MostlyVFR but scattered MVFR ceilings visibilities
in showers, main during the afternoon.

Wednesday night through Thursday... MVFR ceilings and areas of
ifr ceilings and visibilities in scattered showers and fog.

Friday... MainlyVFR. Lingering MVFR in scattered showers across
the CAPE and islands in the morning.

Marine
Forecaster confidence levels...

low - less than 30 percent.

Moderate - 30 to 60 percent.

High - greater than 60 percent.

Short term through Monday night ... High confidence.

Winds will remain light through Mon night with high pres over
the waters. However, increasing long period south swell from
hurricane maria will be moving into the waters with potential
for 7 to 8 ft seas over southern waters Mon min night. SCA for
seas will continue. In addition, areas of fog will result in
poor vsbys at times, especially south and east of CAPE cod.

Outlook Tuesday through Friday ... Confidence... High
relatively light winds are expected through this period. However,
swells from maria will propagate into the southern coastal waters,
beginning late Sunday night or Monday. Small craft advisories will
likely need to be extended due to rough seas for the waters south of
the ma and ri coast for all of this period.

The swells from maria will likely produce another round of high surf
and dangerous rip currents.

Outlook... Monday night through Friday
confidence... High
relatively light winds are expected through Friday. However,
swells from maria will impact the south coastal marine zones,
and small craft advisories will likely be needed due to rough
seas for much of this week.

The swells from maria will likely produce continuing high surf and
dangerous rip currents, probably lasting most of this week.

Tides coastal flooding
Long period swell from hurricane maria will be moving north
into the south coastal waters. Wnawave guidance indicating
increasing swell to 7-8 ft with a period of 15 seconds moving
into the south coastal waters Mon into Mon night and up to 9 ft
on Tuesday. This will result in increasing high surf and
dangerous rip currents. High surf advisory will continue and
will extend through tue, and it is likely the high surf will
continue through the week even as maria likely recurves out to
sea well southeast of new england.

Climate
Record high today was broken at bdl with a temp of 90 degrees.

Best chance for record high temps will be today and Monday, when
records are 85-90. Records jump up Tuesday to 89-95, while less
mixing will lead to lower MAX temps. So the chance for new records
diminishes Tuesday. The current record MAX temps for the three days
are:
bos 90 1959 89 1926 95 1881
orh 85 2010 85 1970 91 1930
bdl 89 1959 90 2007 93 2007
pvd 87 1959 89 1920 89 2007
also, dew points in the 60s, while high for this time of year,
are not unprecedented. The daily extreme high values for dew
points are still in the low 70s, except for a couple of 68 and
69 values at worcester.

Box watches warnings advisories
Ct... None.

Ma... High surf advisory until 6 pm edt Tuesday for maz020-022>024.

Ri... High surf advisory until 6 pm edt Tuesday for riz006>008.

Marine... Small craft advisory for hazardous seas from 8 pm this evening
to 6 pm edt Tuesday for anz235-237.

Small craft advisory for hazardous seas until 6 pm edt Tuesday
for anz254>256.

Synopsis... Belk kjc
near term... Kjc
short term... Kjc
long term... Belk
aviation... Belk kjc
marine... Belk kjc
tides coastal flooding... Staff
climate... Staff


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
BHBM3 - 8443970 - Boston, MA 15 mi37 min 77°F 1015.4 hPa
44029 - Buoy A0102 - Mass. Bay/Stellwagen 17 mi111 min SSE 3.9 G 5.8 69°F 61°F2 ft1015.6 hPa
44013 - BOSTON 16 NM East of Boston, MA 18 mi65 min SE 5.8 G 5.8 67°F 64°F2 ft1016.1 hPa (-0.8)
IOSN3 - Isle of Shoals, NH 33 mi55 min S 13 G 14 73°F 1015.8 hPa (-0.6)62°F
BGXN3 - Great Bay Reserve, NH 37 mi70 min ESE 1.9 78°F 1016 hPa66°F
44098 - Jeffrey's Ledge, NH (160) 43 mi49 min 64°F4 ft

Wind History for Wells, ME
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Beverly, Beverly Municipal Airport, MA4 mi62 minESE 410.00 miFair74°F62°F67%1015.6 hPa
Boston, Logan International Airport, MA13 mi61 minENE 310.00 miFair73°F64°F74%1016.2 hPa
Lawrence Municipal Airport, MA18 mi61 minSSE 310.00 miFair84°F68°F59%1016.6 hPa
Bedford, Hanscom Field, MA22 mi59 minESE 710.00 miFair82°F64°F55%1016.9 hPa

Wind History from BVY (wind in knots)
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Last 24hrCalmSE3CalmCalmCalmCalmCalmCalmCalmCalmCalmCalmCalmNW3CalmE44NE5CalmSE6S8SE6S6SE4
1 day agoNE11
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2 days agoN9N6N11NE10
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Tide / Current Tables for Beverly, Massachusetts
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Beverly
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Sun -- 02:34 AM EDT     9.35 feet High Tide
Sun -- 06:33 AM EDT     Sunrise
Sun -- 08:32 AM EDT     0.51 feet Low Tide
Sun -- 10:49 AM EDT     Moonrise
Sun -- 02:49 PM EDT     9.58 feet High Tide
Sun -- 06:36 PM EDT     Sunset
Sun -- 09:01 PM EDT     0.29 feet Low Tide
Sun -- 09:20 PM EDT     Moonset
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
5.87.99.29.28.26.54.42.20.70.71.83.65.67.79.29.68.87.25.12.91.10.30.92.3

Tide / Current Tables for Marblehead Channel, Massachusetts Current
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Marblehead Channel
Click for Map
Sun -- 12:49 AM EDT     0.42 knots Max Flood
Sun -- 03:25 AM EDT     -0.00 knots Slack
Sun -- 06:33 AM EDT     Sunrise
Sun -- 07:45 AM EDT     -0.39 knots Max Ebb
Sun -- 09:47 AM EDT     0.00 knots Slack
Sun -- 10:49 AM EDT     Moonrise
Sun -- 01:07 PM EDT     0.42 knots Max Flood
Sun -- 03:47 PM EDT     -0.00 knots Slack
Sun -- 06:36 PM EDT     Sunset
Sun -- 08:13 PM EDT     -0.41 knots Max Ebb
Sun -- 09:20 PM EDT     Moonset
Sun -- 10:19 PM EDT     0.00 knots Slack
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
0.40.40.30.1-0.1-0.2-0.3-0.4-0.4-0.30.10.30.40.40.40.2-0-0.2-0.3-0.4-0.4-0.4-0.10.2

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

GOES Local Image of Northeast    EDIT
Geos

Wind Forecast for Boston, MA (18,4,5,8)
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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.