Monday, May27, 2019 L-36.com


Marine Weather and Tides
Vineyard Haven, MA

Version 3.4
What's New / NOTES
10/6/2018 Colors of tide XTide graphs changed to emphasize that they were upgraded. See next note. Comments welcome.
10/4/2018 I have fixed XTide and updated the harmonic files. There were some name changes so you might have to click EDIT to find the new station name.

Sunrise 5:10AMSunset 8:06PM Monday May 27, 2019 7:02 AM EDT (11:02 UTC) Moonrise 2:03AMMoonset 1:09PM Illumination 40% Phase: Third Quarter Moon; Moon at 23 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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ANZ232 Nantucket Sound- 343 Am Edt Mon May 27 2019
Today..NE winds 5 to 10 kt. Seas around 2 ft.
Tonight..E winds 5 to 10 kt, becoming ne after midnight. Seas around 2 ft in the evening, then 1 foot or less.
Tue..E winds 5 to 10 kt. Seas 1 foot or less, then around 2 ft in the afternoon. A chance of rain in the afternoon.
Tue night..SE winds 15 to 20 kt, becoming S 10 to 15 kt after midnight. Gusts up to 25 kt. Seas around 3 ft. Rain likely.
Wed..NE winds 5 to 10 kt. Seas around 3 ft. A chance of showers in the morning.
Wed night..SE winds 5 to 10 kt, becoming S after midnight. Seas around 3 ft. A chance of showers.
Thu..SW winds 10 to 15 kt with gusts up to 20 kt. Seas around 3 ft. A chance of showers in the afternoon.
Thu night..SW winds 10 to 15 kt with gusts up to 20 kt. Seas around 3 ft. Showers likely with a chance of tstms.
Fri..SW winds 5 to 10 kt. Seas around 3 ft. A chance of showers.
Fri night..W winds 5 to 10 kt. Seas 2 to 3 ft. A chance of showers in the evening. Winds and seas higher in and near tstms. 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 343 Am Edt Mon May 27 2019
Synopsis for massachusetts and rhode island coastal waters.. High pres builds across the waters today. A weak front crosses the waters this evening with another high pres building south into new eng later tonight. High pres moves east of the waters Tue as a warm front approaches new eng from the west. Low pres tracks along the front near the south coast Tue night then moves offshore Wed as weak high pres moves over the waters. A series of fronts will move into new eng Thu and Fri. 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 Vineyard Haven, MA
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location: 41.38, -70.49     debug


Area Discussion for - Boston, MA
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Fxus61 kbox 270837
afdbox
area forecast discussion
national weather service boston norton ma
437 am edt Mon may 27 2019

Synopsis
High pressure builds over new england today and tonight. A
front wavers across the region late Tuesday into Thursday,
bringing the threat for showers. An approaching front will
bring milder temperatures during Thursday, keeping the threat
for more showers along with isolated thunderstorms. The front
exits early Friday, with dry and seasonable conditions to start
next weekend.

Near term until 6 pm this evening
Weak high pres settles over sne today, although a weak cold
front will be dropping south into the region later today into
this evening. The front will be accompanied by an area of low
and mid level moisture which moves into northern ma later
today. Mostly sunny skies will give way to some increase in
cloud cover later in the afternoon but not expecting any
showers. 925 temps 14c-17c from east to west support highs in
the mid to upper 70s away from the coast with lower 80s
possible in the lower ct valley. Winds turning easterly with
developing sea breezes will keep it cooler along the coast,
especially east coastal ma and CAPE islands with readings
mostly in the upper 60s.

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

as the front moves south across the region this evening, the
moisture increases a bit which may lead to a few light showers
or sprinkles developing across eastern ma in the evening.

Otherwise dry conditions as high pres builds in from the north,
but increasing mid high clouds moving in overnight ahead of next
system. Lows mainly upper 40s to lower 50s.

Tuesday...

high pres over eastern new eng at 12z moves offshore as a warm
front approaches from the sw. The departing high will hold
enough dry air to delay onset of steadier rainfall until the
afternoon. May see a few showers move into the interior during
the morning assocd with a weak shortwave. Then decent
isentropic lift enhanced by a low level jet intersecting the
frontal boundary combined with deep moisture plume and pwats
increasing to 1.5 inches will result in widespread rainfall
moving across the region in the afternoon, especially inland
from the south coast and SE new eng. Steadier rainfall may hold
off until late in the day along the SE new eng coast. Nam
indicates decent instability aloft moving into western new eng
late Tue but gfs ECMWF hold it back to the sw. Kept thunder out
of the forecast for Tue as it is likely the better chance will
be Tue evening as the low level theta-e ridge moves into the
region.

It will be a cool day with onshore flow. Highs will occur in
the morning with temps mostly mid upper 50s and possibly lower
60s near the south coast. But temps falling through the 50s in
the afternoon as the steady rain moves in, and may see temps
drop into the upper 40s across northern ma making for a raw
afternoon.

Long term Tuesday night through Sunday
Highlights...

* chilly Tue night through Thu with showers
* cold front approaches Thu night early Fri bringing milder
temperatures with showers and scattered thunderstorms
* rain exits late Friday, then mainly dry, seasonable
conditions on Saturday
* another front approaches Sunday with a chance for showers and
a few thunderstorms
overview...

expect a mainly zonal mid level steering flow lingering across
the northeast for most of this week as the subtropical ridge
remains across the SE u.S. Into the SW atlantic and eastern
gulf of mexico. Weak low pressure waves move eastward in the
fast flow aloft, so will see periods of showers Tuesday night
through the end of the work week, with brief breaks in between.

There is a chance for thunderstorms Thu thu night as well as
temperatures modify to near normal levels.

00z models beginning to show changes into next weekend as
another short wave in the fast flow approaches. There may be
another round of showers and embedded thunderstorms around next
Sunday.

Details...

Tuesday night through Wednesday night...

expect the cool, moist pattern from the holiday to remain in
place as a wavering front allows weak lows to move along it.

This will bring periods of showers Tuesday night into early
Wednesday. May see some marginal instability which may cause a
few thunderstorms to develop as well, mainly along the immediate
s coast.

The northern extent of a pwat plume about 1-2 sd above seasonal
normals crosses the region by 12z wed, which may allow some
brief, locally heavy rainfall during the day especially across
western areas. 00z GEFS ensembles signal an increase in the
pwat swath to 2-3 sd above normal Wed night as the front begins
to lift N with winds shifting to s-se. May see isolated
convection that also pushes across south coastal areas, but
should be limited there.

Cool temperatures will linger on Tuesday night, with lows
mainly in the mid 40s to around 50. Readings on Wed look to
reach the 60s to around 70, but remain in the upper 50s across
the outer cape. These readings will run 5 to 10 degrees below
seasonal normals for late may. The temps Wed night will be
milder as the warm front approaches, with readings 5-10 degrees
higher than Tue night.

Thursday and Friday...

another low will ride along the front across the great lakes
thu, then into central and northern new england Thu night fri.

Another swath of instability also lifts in as temps rise, so
have also mentioned isolated to scattered thunderstorms thu
afternoon evening. A cold front will push across late thu
night Fri morning, which should allow winds to shift to w. A
band of moisture may linger into midday, then should dry out.

Temps should run close to seasonal levels both Thu and fri,
with highs in the 70s, except slightly cooler along the
immediate coast.

Friday night through Sunday...

should see drier air working across the region Fri night and
hold on through Saturday as a broad high pressure center crosses
the region Fri night, then offshore on sat. Expect high temps
on Sat to run close to seasonal levels, generally in the 70s,
though again cooler across CAPE cod and the islands.

Dry conditions hold on through Saturday night, then moisture
begins to increase on s-sw winds during Sunday as a cold front
moves across the great lakes into central quebec. Model
solution spread lends to lower confidence on timing and track
of the approaching front, so went along with a model blend for
the Sunday late morning afternoon timeframe. Carried chance pops
moving into N central and NW mass by around midday, then
shifting SE through the afternoon. Also kept mention of
isolated to slight chance of thunderstorms as well.

Aviation 09z Monday through Friday
Forecaster confidence levels...

low - less than 30 percent.

Moderate - 30 to 60 percent.

High - greater than 60 percent.

Short term through Tuesday ...

today... High confidence.VFR. Sea breezes developing around
midday into the afternoon.

Tonight... High confidence.VFR CIGS above 5k ft. Light winds.

Tuesday... Moderate confidence. MainlyVFR CIGS in the morning
with scattered showers moving into the region, then lowering to
MVFR ifr as more widespread rain develops in the afternoon,
especially away from the SE new eng coast.

Kbos terminal... High confidence in taf.

Kbdl terminal... High confidence in taf.

Outlook Tuesday night through Friday ...

Tuesday night: mainly MVFR, with areas ifr possible. Breezy. Ra
likely, chance shra.

Wednesday: mainlyVFR, with local ifr possible. Chance shra.

Wednesday night: mainly MVFR, with local ifr possible. Chance
shra, isolated tsra.

Thursday through Thursday night: mainly MVFR, with localVFR
possible. Breezy. Shra likely, chance tsra.

Friday: mainlyVFR, with local MVFR possible. Chance shra,
slight chance tsra.

Marine
Forecaster confidence levels...

low - less than 30 percent.

Moderate - 30 to 60 percent.

High - greater than 60 percent.

Short term through Tuesday ... High confidence.

Today... Light northerly winds turning onshore over nearshore
waters in the afternoon as sea breezes develop.

Tonight... Light winds turning NE e.

Tuesday... E NE winds becoming SE in the afternoon with gusts to
20 kt. Seas remain below 5 ft. Vsbys lowering in developing rain
and fog in the afternoon.

Outlook Tuesday night through Friday ...

Tuesday night: winds less than 25 kt. Areas of seas approaching
5 ft. Rain likely, chance of rain showers. Local visibility
1 to 3 nm.

Wednesday: winds less than 25 kt. Seas up to 5 ft. Slight
chance of rain showers.

Wednesday night: winds less than 25 kt. Areas of seas
approaching 5 ft. Chance of rain showers, patchy fog. Local
visibility 1 to 3 nm.

Thursday: winds less than 25 kt. Areas of seas approaching
5 ft. Chance of rain showers, slight chance of thunderstorms.

Thursday night: winds less than 25 kt. Areas of seas
approaching 5 ft. Rain showers likely, chance of thunderstorms.

Friday: winds less than 25 kt. Areas of seas approaching 5 ft.

Chance of rain showers, slight chance of thunderstorms.

Box watches warnings advisories
Ct... None.

Ma... None.

Ri... None.

Marine... None.

Synopsis... Kjc evt
near term... Kjc
short term... Kjc
long term... Evt
aviation... Kjc evt
marine... Kjc evt


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
44020 - NANTUCKET SOUND 14 mi33 min N 12 G 14 57°F1010.4 hPa
BZBM3 - 8447930 - Woods Hole, MA 14 mi33 min 63°F 58°F1010.7 hPa
WAXM3 - Waquoit Bay Reserve, MA 14 mi78 min NW 1.9 60°F 1010 hPa58°F
NTKM3 - 8449130 - Nantucket Island, MA 22 mi33 min N 5.1 G 7 59°F 60°F1010.5 hPa
44090 33 mi33 min 54°F1 ft
FRVM3 - 8447386 - Fall River, MA 42 mi33 min 64°F 62°F1011.8 hPa
BLTM3 - 8447387 - Borden Flats Light at Fall River, MA 43 mi33 min NNE 4.1 G 7 65°F 1011.4 hPa
FRXM3 43 mi33 min 65°F 54°F
44097 - Block Island, RI (154) 44 mi33 min 55°F3 ft
NWPR1 - 8452660 - Newport, RI 45 mi33 min N 5.1 G 7 66°F 53°F1011.3 hPa
PRUR1 46 mi33 min 65°F 56°F
NAXR1 - Narragansett Bay Reserve, RI 48 mi78 min NNE 4.1 64°F 1011 hPa55°F

Wind History for Nantucket Island, MA
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Marthas Vineyard Airport, MA7 mi70 minNNW 810.00 miA Few Clouds62°F54°F75%1010.3 hPa
Otis Air National Guard Base, MA19 mi68 minNNW 6 G 1110.00 miMostly Cloudy63°F53°F73%1010.5 hPa
Nantucket, Nantucket Memorial Airport, MA24 mi70 minN 1010.00 miPartly Cloudy59°F55°F87%1009.7 hPa
Hyannis, Barnstable Municipal-Boardman Airport, MA24 mi67 minN 810.00 miFair59°F53°F81%1010 hPa

Wind History from MVY (wind in knots)
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N4N5N6NW4NW4W4NW6Calm

Tide / Current Tables for Edgartown, Martha's Vineyard, Massachusetts
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Edgartown
Click for Map
Mon -- 12:27 AM EDT     0.36 feet Low Tide
Mon -- 02:03 AM EDT     Moonrise
Mon -- 05:13 AM EDT     Sunrise
Mon -- 07:23 AM EDT     1.79 feet High Tide
Mon -- 12:58 PM EDT     0.23 feet Low Tide
Mon -- 01:09 PM EDT     Moonset
Mon -- 08:03 PM EDT     1.77 feet High Tide
Mon -- 08:05 PM EDT     Sunset
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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0.40.40.60.81.11.31.61.81.81.51.10.70.40.20.30.60.81.11.41.71.81.71.41

Tide / Current Tables for Woods Hole, Massachusetts Current (use with caution)
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Woods Hole
Click for Map
Mon -- 02:03 AM EDT     Moonrise
Mon -- 03:27 AM EDT     2.81 knots Max Flood
Mon -- 05:14 AM EDT     Sunrise
Mon -- 05:44 AM EDT     -0.01 knots Slack
Mon -- 08:08 AM EDT     -3.19 knots Max Ebb
Mon -- 11:46 AM EDT     0.01 knots Slack
Mon -- 01:10 PM EDT     Moonset
Mon -- 03:58 PM EDT     3.19 knots Max Flood
Mon -- 06:30 PM EDT     -0.05 knots Slack
Mon -- 08:06 PM EDT     Sunset
Mon -- 08:42 PM EDT     -3.01 knots Max Ebb
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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0.91.82.42.82.72.1-1.2-2.7-3.2-3-2.3-1.30.81.82.533.22.91.9-1.8-2.8-3-2.5-1.8

Weather Map and Satellite Images
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GOES 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 (7,2,3,4)
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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.