Tuesday, April23, 2019 L-36.com


Marine Weather and Tides
North Falmouth, 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 5:49AMSunset 7:33PM Tuesday April 23, 2019 6:37 AM EDT (10:37 UTC) Moonrise 12:00AMMoonset 8:54AM Illumination 84% Phase: Waning Gibbous; Moon at 19 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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ANZ234 Buzzards Bay- 350 Am Edt Tue Apr 23 2019
Today..N winds 10 to 15 kt, diminishing to 5 to 10 kt this afternoon. Gusts up to 20 kt. Seas around 2 ft. Patchy fog this morning. Isolated showers this morning with vsby 1 to 3 nm.
Tonight..E winds 5 to 10 kt, becoming S 10 to 15 kt with gusts up to 20 kt after midnight. Seas 2 to 3 ft. Scattered showers after midnight.
Wed..SW winds 10 to 15 kt with gusts up to 20 kt. Seas around 3 ft. Patchy fog in the morning with vsby 1 to 3 nm.
Wed night..NW winds 10 to 15 kt with gusts up to 20 kt, diminishing to 5 to 10 kt after midnight. Seas 2 to 3 ft.
Thu..NW winds 5 to 10 kt, becoming sw in the afternoon. Seas around 2 ft.
Thu night..S winds 5 to 10 kt. Seas around 2 ft. A chance of showers.
Fri..S winds 10 to 15 kt. Gusts up to 20 kt in the afternoon. Seas 2 to 3 ft. Showers likely.
Fri night..W winds 10 to 15 kt with gusts up to 20 kt. Seas around 3 ft. Showers likely, mainly in the evening. Vsby 1 to 3 nm after midnight.
Sat..W winds 10 to 15 kt with gusts up to 25 kt. Seas 2 to 3 ft.
Sat night..W winds 10 to 15 kt with gusts up to 20 kt, diminishing to 5 to 10 kt after midnight. Seas around 2 ft. 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 350 Am Edt Tue Apr 23 2019
Synopsis for massachusetts and rhode island coastal waters.. Low pressure lifts ne today is followed by a sweeping cold front overnight into Wednesday morning. High pressure builds across the region Thursday while a more potent cold front slides across the waters Friday into Saturday with additional rains. High pressure returns briefly while additional showers are possible late Sunday. Quiet weather potentially returns for early next week. 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 Falmouth, MA
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location: 41.64, -70.66     debug


Area Discussion for - Boston, MA
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Fxus61 kbox 230744
afdbox
area forecast discussion
national weather service boston norton ma
344 am edt Tue apr 23 2019

Synopsis
Low pressure east of nantucket and CAPE cod before sunrise will exit
out to sea today providing a drying trend and sunshine developing
this afternoon from west to east. A weak front will bring a round of
showers tonight into Wednesday morning, followed by mainly dry
weather. Thursday could be the pick of the week with sunshine, light
winds and mild temperatures. Low pressure will then develop along a
cold front as it approaches the region, bringing another round of
showers Friday into early Saturday morning. A drying trend then
develops Saturday afternoon along with cool conditions. Scattered
showers are possible later Sunday followed by dry weather returning
for early next week along with moderating temperatures.

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

stubborn low slowly lifting N e. Collapsing on itself with drier
air entraining, low- to mid-level convergent winds and deformation
weakening and shifting N e. Per radar returns, indications of a
downward trend while automated surface observations have high-
lighted improved visibility and ceiling conditions to the w. Fog
will remain an issue for mainly e-coastal ma. Visibility 1 to 2
miles. Preference to consensus high-res model forecast trends.

Today ...

tricky temperature forecast. Stubborn low continuing to lift out,
rain lingering through the morning hours, especially for far E ma.

Surface temperature forecast dependent on cloud cover that are
already clearing W of the low and comma-head cloud shield, surface
winds that'll initially be northerly shifting S with time.

Anticipating temperatures will over-achieve in the ct river valley.

Having been mild overnight, forecasting low 70s for highs, but can't
rule out mid-70s. W to E gradient on the order of 20 perhaps as high
as 30 degrees from the ct river valley to the outer cape. Tough to
nail down with high confidence but favor high-res guidance. Href
has got the right idea, but add roughly 5 degrees given accompanying
forecast cloud cover.

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

overnight scattered showers. Sweeping cold front with continental
tropical airmass. Decent tongue of theta-e, some weak elevated
instability, precipitable waters pushing slightly over 1-inch.

Greater confidence of outcomes N of the ma-pike given supporting
lift ascent associated with synoptics, stronger convergent flow
parent to the sweeping cold front. Likely pops mainly N of the ma-
pike. Rainfall amounts of around 0.25 inches, possibly upwards of
a half an inch closer to the N ma border given indications of a
moist environment and some measure of ascent through a moist
column.

Wednesday ...

breezy, dry, seasonable. Pronounced cool, dry air following the cold
front. Boundary layer lapse rates steepen allowing the mix-down of
westerly momentum and drier air. Stepped-up westerly winds suggesting
gusts up to 30 mph across the high terrain while pushing surface
dewpoints lower as forecast model soundings highlight inverted-v
profiles. Scattered to broken stratocu around 4-5 kft beneath
cyclonic flow. Highs around the low 60s.

Long term Wednesday night through Monday
Highlights...

* Thu likely the pick of the week W dry weather & highs 65-70
* showers and cool weather return Friday into early Saturday
* drying trend likely Saturday afternoon and into Sunday
details...

Wednesday night and Thursday...

dry cool northwest flow across the region as closed mid level low
over me and its surface circulation over nova scotia at 00z thu,
remain progressive and continue moving east. Thus dry and seasonable
weather expected Wed night. Thu should be the pick of the week in
response to short wave ridging and associated anticyclonic flow
overspreading the area and providing dry tranquil weather. Model
soundings indicate +3c at the top of the blyr around 875 mb. This
will support highs well into the 60s and possibly near 70 away from
the south coast, as modest NW winds in the morning shift to wsw in
the afternoon. Given full Sun and light winds will make it feel even
warmer.

Friday Fri night ...

potent northern stream energy phases with southern stream moisture
yielding a high amplitude negative tilt trough over the northeast
heading towards 12z sat. This results in low pres developing rapidly
along an approaching cold front. The combination of pwats climbing
over 1.5 inches and strong jet dynamics (negative tilt trough and
rrq of 110 kt upper level jet streak over sne) will likely yield a
period of heavy rain, a few thunderstorms and strong winds. Greatest
impacts appear Fri night but still 3+ days away.

Saturday ...

threat for rain early as negative tilt trough swings thru. Strong
post frontal winds possible as surface low bombs over me with 984 mb
low east of CAPE ann 12z Sat deepens into the 970s as the low tracks
into me. Good pres rise fall couplet may enhance post frontal winds.

Nevertheless upper air pattern remains progressive so a drying trend
develops as the day progress but very windy and cool weather
follows.

Sunday Monday ...

signs of upper air pattern deamplifying somewhat with just a low
amplitude mid level trough over new england Sunday. However this
trough may be sufficient for a risk of scattered showers later
Sunday. Upper air pattern becomes more zonal by Monday so dry
weather likely returns along with temps moderating.

Aviation 07z Tuesday through Saturday
Forecaster confidence levels...

low - less than 30 percent.

Moderate - 30 to 60 percent.

High - greater than 60 percent.

Short term through Wednesday ... Moderate confidence.

Today ...

bkn-ovc MVFR-ifr becoming sct-bknVFR W to e. -ra ra concluding,
lingering longest over E ma by 16z. N winds 10 to 15 kts with
gusts to 20 kts, strongest along the coast, turning light while
becoming s.

Tonight ...

sct-bknVFR becoming bkn-ovcVFR-MVFR with -shra mainly along
and N of the ma-pike. S winds becoming w. Generally 5 to 10 kts
with gusts up to 20 kts, strongest along the coast and over high
terrain.

Wednesday ...

becoming sct low-endVFR, CIGS 4-5 kft agl with breezy W winds
10 to 15 kts with gusts up to 25 kts.

Kbos terminal...

expect -ra to dissipate early this morning, lingering as late as
16z. MVFR-ifr lifting, becomingVFR towards mid-afternoon.

Kbdl terminal...

conditions alreadyVFR. Sct-bkn MVFR possible into early morning
with sct -shra. Expect after sunrise that sct-bkn low-endVFR
prevails with winds gradually turning s.

Outlook Wednesday night through Saturday ...

Wednesday night:VFR. Breezy.

Thursday:VFR.

Thursday night: mainlyVFR, with areas MVFR possible. Chance
shra.

Friday: mainly MVFR, with local ifr possible. Breezy. Shra
likely.

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

Chance shra.

Saturday:VFR. Breezy.

Marine
Forecaster confidence levels...

low - less than 30 percent.

Moderate - 30 to 60 percent.

High - greater than 60 percent.

Short term through Wednesday ... High confidence.

Small craft advisory conditions across atlantic-exposed waters.

Initial 5 to 7 foot seas with 10 to 15 kt sustained with gusts
up to 25 kt northerly winds, especially over E waters. Gradually
diminishing late today into this evening out ahead of a sweeping
cold front into Wednesday morning. An opportunity for seas to
diminish, however behind the cold front westerly winds will be
breezy 10 to 15 kts with gusts up to 25 kts which will maintain
seas up around 4 to 6 feet. Small craft advisories for inner-
waters drop during the aforementioned lull will likely need to
be reissued for the Wednesday westerly wind burst.

Outlook Wednesday night through Saturday ...

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

Thursday: winds less than 25 kt.

Thursday night: winds less than 25 kt. Chance of rain showers.

Friday: winds less than 25 kt. Local rough seas. Rain showers
likely.

Friday night: low risk for small craft advisory winds with
gusts up to 25 kt. Areas of rough seas. Chance of rain showers.

Local visibility 1 to 3 nm.

Saturday: low risk for small craft advisory winds with gusts up
to 25 kt. Local rough seas. Slight chance of rain showers.

Box watches warnings advisories
Ct... None.

Ma... None.

Ri... None.

Marine... Small craft advisory until 5 pm edt this afternoon for anz235-
237-256.

Small craft advisory until noon edt Wednesday for anz250.

Small craft advisory until 11 pm edt this evening for anz251.

Small craft advisory until 8 pm edt Wednesday for anz254-255.

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


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
WAXM3 - Waquoit Bay Reserve, MA 8 mi112 min WNW 5.1 46°F 1011 hPa46°F
BZBM3 - 8447930 - Woods Hole, MA 8 mi43 min 47°F 49°F1011.6 hPa
44090 22 mi37 min 45°F2 ft
44020 - NANTUCKET SOUND 23 mi37 min NNW 14 G 16 47°F 49°F1011.2 hPa (+0.6)46°F
FRVM3 - 8447386 - Fall River, MA 27 mi43 min 47°F 51°F1012.8 hPa
BLTM3 - 8447387 - Borden Flats Light at Fall River, MA 28 mi43 min N 7 G 11 48°F 1012.4 hPa
FRXM3 28 mi43 min 48°F 47°F
PRUR1 34 mi43 min 49°F 48°F
NAXR1 - Narragansett Bay Reserve, RI 36 mi112 min NNE 8.9 48°F 1012 hPa47°F
CPTR1 - 8452944 - Conimicut Light, RI 37 mi43 min NNW 12 G 13 49°F 53°F1012.8 hPa
NWPR1 - 8452660 - Newport, RI 37 mi43 min N 8.9 G 16 48°F 45°F1012.5 hPa
NTKM3 - 8449130 - Nantucket Island, MA 39 mi43 min NW 7 G 8.9 48°F 53°F1010.9 hPa
PVDR1 40 mi43 min N 7 G 13 50°F 1013 hPa49°F
QPTR1 - 8454049 - Quonset Point, RI 40 mi43 min N 9.9 G 13 49°F 53°F1012.9 hPa
FOXR1 - 8454000 - Providence, RI 41 mi39 min NNE 5.1 G 13 50°F 51°F1012.5 hPa
44018 - SE Cape Cod 30NM East of Nantucket, MA 48 mi47 min N 14 G 16 42°F 6 ft1011.3 hPa (-0.3)42°F
44013 - BOSTON 16 NM East of Boston, MA 49 mi47 min N 18 G 19 43°F 44°F5 ft1011.6 hPa (+0.0)43°F

Wind History for Borden Flats Light at Fall River, MA
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Otis Air National Guard Base, MA7 mi42 minN 91.25 miFog/Mist45°F44°F100%1011.5 hPa
Marthas Vineyard Airport, MA16 mi44 minNNW 106.00 miFog/Mist47°F45°F93%1011.5 hPa
New Bedford, New Bedford Regional Airport, MA17 mi44 minVar 43.00 miFog/Mist47°F46°F100%1012 hPa
Plymouth, Plymouth Municipal Airport, MA19 mi45 minN 62.00 miLight Rain Fog/Mist45°F43°F93%1012.2 hPa
Hyannis, Barnstable Municipal-Boardman Airport, MA20 mi41 minNNW 82.00 miLight Rain Fog/Mist46°F44°F93%1010.8 hPa

Wind History from FMH (wind in knots)
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G14
1 day agoS4S7S7S6S6S7CalmE3--S4S8SW14S8S9S7SE5CalmSE3CalmCalmCalmCalmCalmNE4
2 days agoS10
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S4S4E4

Tide / Current Tables for West Falmouth Harbor, Buzzards Bay, Massachusetts
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West Falmouth Harbor
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Tue -- 05:20 AM EDT     -0.09 feet Low Tide
Tue -- 05:50 AM EDT     Sunrise
Tue -- 08:53 AM EDT     Moonset
Tue -- 11:54 AM EDT     3.81 feet High Tide
Tue -- 05:13 PM EDT     0.12 feet Low Tide
Tue -- 07:31 PM EDT     Sunset
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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4.63.82.51.20.3-0.1-00.411.82.83.53.83.42.41.30.50.10.20.61.32.133.8

Tide / Current Tables for Cape Cod Canal, Massachusetts Current
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Cape Cod Canal
Click for Map
Tue -- 12:50 AM EDT     -0.02 knots Slack
Tue -- 03:47 AM EDT     -4.75 knots Max Ebb
Tue -- 05:50 AM EDT     Sunrise
Tue -- 06:57 AM EDT     0.21 knots Slack
Tue -- 08:53 AM EDT     Moonset
Tue -- 10:02 AM EDT     4.49 knots Max Flood
Tue -- 01:30 PM EDT     -0.20 knots Slack
Tue -- 04:16 PM EDT     -4.43 knots Max Ebb
Tue -- 07:21 PM EDT     0.02 knots Slack
Tue -- 07:31 PM EDT     Sunset
Tue -- 10:18 PM EDT     4.10 knots Max Flood
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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2.8-1.3-3.5-4.5-4.7-4.3-3.10.83.24.24.54.33.62.2-2.3-3.8-4.4-4.2-3.4-1.82.43.64.14

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 (6,6,7,8)
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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.