Sunday, May26, 2019 L-36.com


Marine Weather and Tides
North Eastham, 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 8:05PM Sunday May 26, 2019 5:43 AM EDT (09:43 UTC) Moonrise 1:34AMMoonset 12:07PM Illumination 51% Phase: Third Quarter Moon; Moon at 22 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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ANZ231 Cape Cod Bay- 358 Am Edt Sun May 26 2019
.small craft advisory in effect until 10 am edt this morning...
Today..SW winds 10 to 15 kt. Gusts up to 25 kt this morning. Seas around 4 ft this morning, then 1 foot or less. A chance of showers with isolated tstms this morning.
Tonight..NW winds 5 to 10 kt. Seas 1 foot or less.
Mon..NE winds 5 to 10 kt. Seas 1 foot or less.
Mon night..S winds around 5 kt, becoming N after midnight. Seas 1 foot or less, then around 2 ft after midnight.
Tue..NE winds around 5 kt, becoming se in the afternoon. Seas around 2 ft in the morning, then 1 foot or less. A chance of showers in the afternoon.
Tue night..SE winds 5 to 10 kt. Seas around 2 ft. Showers likely.
Wed..S winds 5 to 10 kt, increasing to 10 to 15 kt in the afternoon. Gusts up to 20 kt. Seas around 2 ft. Showers likely, mainly in the morning.
Wed night..S winds 5 to 10 kt, increasing to 10 to 15 kt with gusts up to 20 kt after midnight. Seas around 2 ft. A chance of showers. Patchy fog after midnight with vsby 1 to 3 nm.
Thu..SW winds 10 to 15 kt. Seas around 2 ft. A chance of showers.
Thu night..SW winds 10 to 15 kt. Seas around 2 ft. A chance of showers. 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 358 Am Edt Sun May 26 2019
Synopsis for massachusetts and rhode island coastal waters.. A weak cold front moves across the waters late today and this evening. High pres builds across the waters Mon, with another cold front moving south of the waters Mon night. High pres moves east of the waters Tue as the front approaches new eng as a warm front. Weak low pres tracks along the front south of new eng Tue night into Wed. A cold front approaches new eng 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 North Eastham CDP, MA
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location: 41.92, -70.03     debug


Area Discussion for - Boston, MA
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Fxus61 kbox 260823
afdbox
area forecast discussion
national weather service boston norton ma
423 am edt Sun may 26 2019

Synopsis
A taste of summertime heat today with a low risk for an
isolated late afternoon thunderstorm south of the pike. A cold
front moves south of the coast tonight followed by high pressure
building in through Monday, then shifting off the coast early
Tuesday. A few weak lows will move along a wavering front across
the region late Tuesday into Thursday, bringing the threat for
showers. Milder temperatures move in during Thursday ahead of an
approaching cold front, with the threat for more showers and
isolated thunderstorms. The front exits during Friday, with dry
and seasonable conditions to start next weekend.

Near term until 6 pm this evening
Scattered showers are pushing off the coast early this morning,
but the threat for a few showers and an isolated t-storm will
continue across SE coastal new eng through daybreak along the
axis of the low level jet. Otherwise, increasing sunshine
develops this morning with a very warm day for sne. 850 mb
temps 14-16c with developing W NW flow support highs in the
mid upper 80s and would not be surprised to see a 90 degree
reading. SW winds along the immediate coast will hold temps
there in the 70s. Steep low level lapse rates with deep and
well mixed boundary layer will result in gusty winds developing
this afternoon, mainly away from the south coast as a low level
inversion will persist there. Gusts to 30 mph likely,
especially along and north of the pike.

Regarding convective potential this afternoon, sbcapes 500-1000
j kg expected to develop which will be limited by bl mixing and
drier air at the surface. Soundings also show very dry air
developing above 750 mb which will limit t-storm potential.

However, weak front and low level convergence south of the pike
may be enough to trigger an isold shower t-storm during
mid late afternoon. The focus for any convection would be
mainly across ri and SE ma and possibly eastern ct where
slightly higher dewpoints may result in locally higher
instability. Also noting a ribbon of higher ki in this area.

Risk is low but non zero.

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

weak front moves south of the coast with dry airmass and light
northerly flow. With clear skies, lows will drop back into the
50s.

Monday...

weak high pres in control will result in plenty of sunshine.

Cooler airmass but still warm away from the coast. High should
reach well into 70s, near 80 ct valley, but upper 60s along the
immediate coast, especially eastern ma where sea breezes
develop. A cold front will be dropping south from northern new
eng during the afternoon and a few showers are possible along
the boundary but this should remain to the north. The front
drops south across sne Mon evening.

Long term Monday night through Saturday
Highlights...

* mainly dry conditions Monday night
* wavering front lingers Tuesday through Wednesday night with
areas of showers and patchy nighttime fog
* cold front approaches Thu thu night bringing mild
temperatures with showers and isolated thunderstorms
* rain exits Friday, then mainly dry, seasonable conditions
early next weekend
overview...

the progressive, active weather pattern across the northeast
looks to continue through most of not during the entire long
term period. Subtropical ridging remains across the southern
u.S., with general long wave ridging remains across the western
third of the country. Noting a continued nearly zonal mid level
steering wind flow across the northeast, bringing a series of
short waves from the central mississippi valley across the great
lakes to the region.

So, will see periods of showers with mainly near to somewhat
below temperatures through around Wednesday night. The wavering
front channeling these lows may lift far enough north for a
brief break, before a cold front moves E out of the ohio
valley southern great lakes during Thursday. This may bring
milder temperatures and more instability, so may see isolated
embedded thunderstorms late Thu thu night prior to frontal
passage.

Medium range models continue signal generally drier, seasonal
conditions for the start of june.

Details...

Monday night...

should see dry but cool conditions Monday evening as high
pressure moves off the S coast. With the fast flow aloft, clouds
will increase and a few showers may push into central and
western areas after midnight as a warm front approaches.

Tuesday through Thursday...

a mainly zonal steering flow from north central plains eastward
to the northeast will keep mid level shortwaves and associated
surface lows moving across the region. GEFS ensembles signaling
possible pwat plume moving across, with 1-2 sd above normal
precip, possibly up to 3 sd above normal by late Thursday.

Each system will bring a chance for showers, though there may
be a better chance from around midday Tuesday into Wednesday
morning. Current forecast suggests some locally heavy rainfall
may move in with this system, especially across the ct valley
and central areas. QPF amounts may range from 0.5 inches to 1
inch of precip there.

May see a brief break around Wednesday night, then another shot
moves in by around midday Thursday. Temps may warm up during
Thursday as a warm front lifts n. Highs may reach the lower-mid
80s. This will help increase the instability factor ahead of the
approaching cold front, with k indices in the lower 30s, slis
around zero to -1 and tq values in the upper teens. Have
mentioned isolated thunder during this portion of the forecast.

Friday and Saturday...

h5 short wave and surface cold front crosses the region Friday,
with leftover showers pushing offshore by around midday. Some
models try to have some spotty precip lingering across central
and eastern areas during the day, but should be mainly dry and
cooler as winds shift to w-nw.

Dry, nearly zonal mid level flow sets up across most of the
northern tier by early Saturday. Ridging looks to set up across
the northeast. So, at this point, looks like generally dry and
seasonal conditions for the start of meteorological summer on
Saturday.

Aviation 09z Sunday through Thursday
Forecaster confidence levels...

low - less than 30 percent.

Moderate - 30 to 60 percent.

High - greater than 60 percent.

Short term through Monday ... High confidence.

Through 12z...

vfr CIGS with areas of MVFR developing. Showers and sct
t-storms exiting eastern ma coast 06-07z, otherwise just a few
showers to move through, becoming focused near the CAPE islands
10-12z. A few SW gusts to 20-25 kt.

Today...

leftover MVFR ifr cigs CAPE islands becomingVFR 14-15z but
lower CIGS may linger at ack until 17-18z. OtherwiseVFR. Low
risk for an isold shra tsra late afternoon over ct ri and SE ma.

West wind gusts to 25-30 kt developing in the afternoon, mainly
along and north of the pike.

Tonight...VFR. Light winds.

Monday...VFR. Sea breezes developing late morning into the
afternoon.

Kbos terminal... High confidence.

Kbdl terminal... High confidence.

Outlook Monday night through Thursday ...

Monday night: mainlyVFR, with local MVFR possible.

Tuesday: mainly MVFR, with areasVFR possible. Shra likely.

Tuesday night: mainly MVFR, with local ifr possible. Shra
likely.

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

Wednesday night: mainlyVFR, with areas MVFR possible. Breezy.

Chance shra.

Thursday: mainlyVFR, with areas MVFR possible. Breezy. 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 Monday ... High confidence.

Today... Low level jet exits after daybreak with SW winds
diminishing over SE waters. Winds below SCA for most of the
waters, but west gusts 25-30 kt developing in the afternoon
over boston harbor and eastern ma nearshore waters near the
coast and narragansett bay where deeper mixing is present. Sca
issued for these locations this afternoon.

Tonight... Nw winds quickly diminish in the evening becoming n
overnight.

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

Outlook Monday night through Thursday ...

Monday night: winds less than 25 kt.

Tuesday: winds less than 25 kt. Chance of rain showers.

Tuesday night: winds less than 25 kt. Seas locally approaching
5 ft. Rain showers likely.

Wednesday through Wednesday night: winds less than 25 kt. Areas
of seas approaching 5 ft. Chance of rain showers. 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.

Box watches warnings advisories
Ct... None.

Ma... None.

Ri... None.

Marine... Small craft advisory until 10 am edt this morning for anz231-
232.

Small craft advisory from 1 pm this afternoon to 8 pm edt this
evening for anz230-236-251.

Small craft advisory until 1 pm edt this afternoon for anz250.

Small craft advisory until 3 pm edt this afternoon for anz254-
255.

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
44090 17 mi44 min 53°F1 ft
44018 - SE Cape Cod 30NM East of Nantucket, MA 21 mi54 min S 18 G 21 53°F 4 ft1012.9 hPa (-2.6)50°F
44020 - NANTUCKET SOUND 32 mi44 min S 18 G 21 56°F1014.3 hPa (-2.3)
WAXM3 - Waquoit Bay Reserve, MA 35 mi119 min WNW 2.9 59°F 1016 hPa57°F
44013 - BOSTON 16 NM East of Boston, MA 44 mi54 min S 14 G 16 55°F 52°F4 ft1012 hPa (-2.7)53°F
BZBM3 - 8447930 - Woods Hole, MA 44 mi50 min 58°F 58°F1014.2 hPa
NTKM3 - 8449130 - Nantucket Island, MA 44 mi50 min S 8 G 15 56°F 59°F1015.1 hPa

Wind History for Nantucket Island, MA
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Provincetown Municipal Airport, MA11 mi48 minS 13 G 1810.00 miLight Rain55°F53°F93%1013.8 hPa
Chatham, Chatham Municipal Airport, MA15 mi52 minSSW 710.00 miOvercast56°F53°F90%1015.1 hPa
Hyannis, Barnstable Municipal-Boardman Airport, MA21 mi48 minSSW 1110.00 miOvercast58°F54°F87%1014.1 hPa

Wind History from PVC (wind in knots)
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Last 24hrW6W5W7NW8NW8NW8NW6N6NE7NE8S7S5S9S9S13S12--SW12SW11SW13S13
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NE11NE9NE6NE4CalmNW3W6W7W8
2 days agoS9S10S10S13S12
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Tide / Current Tables for Wellfleet, Massachusetts
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Wellfleet
Click for Map
Sun -- 01:33 AM EDT     Moonrise
Sun -- 05:10 AM EDT     Sunrise
Sun -- 05:40 AM EDT     9.64 feet High Tide
Sun -- 12:08 PM EDT     Moonset
Sun -- 12:18 PM EDT     1.28 feet Low Tide
Sun -- 12:34 PM EDT     Last Quarter
Sun -- 06:24 PM EDT     9.05 feet High Tide
Sun -- 08:03 PM EDT     Sunset
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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2.134.56.289.49.68.87.55.842.31.31.62.74.26.17.998.986.85.23.6

Tide / Current Tables for Cape Cod Lighthouse, SE of, Cape Cod, Massachusetts
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Cape Cod Lighthouse
Click for Map
Sun -- 01:33 AM EDT     Moonrise
Sun -- 05:10 AM EDT     Sunrise
Sun -- 05:38 AM EDT     7.34 feet High Tide
Sun -- 11:59 AM EDT     0.98 feet Low Tide
Sun -- 12:07 PM EDT     Moonset
Sun -- 12:34 PM EDT     Last Quarter
Sun -- 06:22 PM EDT     6.89 feet High Tide
Sun -- 08:04 PM EDT     Sunset
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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1.82.63.74.96.37.27.36.75.54.22.71.511.42.33.54.96.26.86.7653.72.5

Weather Map and Satellite Images
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GOES Local Image of Northeast    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 (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.