Saturday, July22, 2017 L-36.com


Marine Weather and Tides
Sagamore, 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 5:25AMSunset 8:10PM Saturday July 22, 2017 6:57 AM EDT (10:57 UTC) Moonrise 4:33AMMoonset 7:32PM Illumination 2% Phase: Waning Crescent; Moon at 28 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- 415 Am Edt Sat Jul 22 2017
Today..NW winds 5 to 10 kt, becoming se 10 to 15 kt this afternoon. Seas 1 foot or less.
Tonight..SW winds 10 to 15 kt. Seas 1 foot or less.
Sun..NE winds 10 to 15 kt. Seas around 2 ft.
Sun night..E winds 10 to 15 kt, diminishing to 5 to 10 kt with gusts up to 20 kt after midnight. Seas around 2 ft. A chance of showers.
Mon..E winds 5 to 10 kt with gusts up to 25 kt. Seas 2 to 3 ft. Showers likely.
Mon night..NE winds 5 to 10 kt. Seas 2 to 3 ft. A chance of showers.
Tue..N winds 5 to 10 kt with gusts up to 20 kt. Seas 2 to 3 ft. A chance of showers.
Tue night..N winds 5 to 10 kt with gusts up to 20 kt. Seas 2 to 3 ft.
Wed..NE winds 5 to 10 kt. Seas 1 foot or less.
Wed night..S winds 5 to 10 kt. Seas 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 415 Am Edt Sat Jul 22 2017
Synopsis for massachusetts and rhode island coastal waters.. Weak low pressure will remain along the massachusetts coast today. Late tonight and Sunday, the coastal waters will be in between high pressure building from canada to northern new england and low pressure emerging off the mid-atlantic coast. The low will pass southeast of the waters Sunday night. Additional waves of low pressure will pass over the southern waters Monday...moving east of the region Tuesday. Strong high pressure will be centered over the waters Wednesday. 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 Sagamore, MA
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location: 41.83, -70.55     debug


Area Discussion for - Boston, MA
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Fxus61 kbox 220807
afdbox
area forecast discussion
national weather service taunton ma
407 am edt Sat jul 22 2017

Synopsis
Dry, hot weather today with lower humidity. High pressure from
canada builds over northern new england Sunday, then moves off
to the east. Several waves of low pressure will pass to the
south of southern new england Saturday night and Sunday. It will
be cooler in eastern sections Sunday but still warm in the
connecticut valley. A couple waves of low pressure will bring
some showers at times along with cooler than normal temperatures
Sunday night through Tuesday. Temperatures will moderate a bit
by mid to late next week, but still remain below normal with
another chance for some showers Thursday and or Thursday night.

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

dew point front progressing southward across ct northern ri per
surface observations (61 at bdl but still 69 at ijd) and on
doppler radar. 925 mb jet now exiting southeast ma. Showers out
ahead of these features extended from long island eastward
across block island. The hrrr forecasts these to move rapidly
east-southeast and exit the waters south of nantucket by 12z.

Today will be dry but still hot. 925 mb temps of +22c should
yield highs in the upper 80s to lower 90s. This could be the
5th day of the heat wave at bdl. We are watching a solid area of
mid level cloudiness covering western and central new york
state. Mid and high cloudiness is forecast to increase over
southern new england this morning and afternoon, but as is often
the case in the summertime, it is likely to erode after
sunrise. Satellite imagery already showing some signs of the
leading edge eroding. With enough filtered sunshine, we should
still hit the upper 80s lowea couple waves of low pressure will bring some showers at times
along with cooler than normal temperatures Sunday night through
Tuesday. Temperatures will moderate a bit by mid to late next week,
but still remain below normal with another chance for some showers
Thursday and or Thursday night.R 90s away from the coast. Winds
will be diminishing along the eastern ma and ri coasts early
this morning and thus expect onshore sea breezes to take hold
late this morning and early this afternoon.

Although the atmosphere is dry, k and tq indices rise to 28 and
17, respectively late in the afternoon in northeast ma.

Although most shower activity should remain to our northwest,
have introduced a slight chance of a shower in the merrimack
valley of northeast ma.

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

southern new england will be in between sprawling high pressure
over southeast canada and northernmost new england... And low
pressure somewhere along the mid-atlantic coast from nj to
delmarva. The low to our south will likely be the remnants of a
mesoscale convective system affecting that area late this
afternoon and tonight. For us, winds will turn to a
northeasterly direction. Skies will be cloudy and there is a
chance of showers, mainly over northern ct, ri, and southeast
ma, closer to the low pressure. Lows in the 60s.

Sunday...

a bit of a tricky forecast. Low pressure will continue passing
southeast of the region. It may cause scattered showers mainly
along the south coast in the morning. But then we should see a
period of increasing sunshine during the late morning through
mid afternoon. Light easterly wind flow will keep eastern ma
temperatures cool... In the mid 70s near the coast, but the
partial sunshine could allow the ct river valley to soar well
into the 80s. ECMWF would suggest 88 degrees but model consensus
is much lower. Have bumped temperatures above the consensus, to
the mid 80s in that region.

Late Sunday afternoon, chances of showers increase again, mainly
in northern ct and western ma, ahead of advancing low pressure.

Long term Sunday night through Friday
Highlights...

* Sun night mon: below normal temps with some showers likely at times
* tue: a few leftover showers possible W below normal temps
* temps moderate mid to late next week but still below average
* another round of showers possible Thu thu night but not a washout
details...

Sunday night and Monday...

a complex forecast as another MCS will likely pass well to our
southwest Sun night towards the axis of greatest instability. While
we should not be directly impacted by that complex, impressive
shortwave trough will approach from the great lakes. This should
increase the forcing for ascent resulting in showers at times Sunday
night mon, but specific timing uncertain at this point. Severe
weather threat looks quite low across our region given lack of
surface instability, but some isolated thunderstorms can not be
ruled out with a bit of elevated instability.

High temps on Monday should be rather cool for july standards.

Northeast surface winds and an abundance of clouds should keep highs
mainly in the 70s. In fact, it is possible a few locations struggle
to break 70.

Tuesday...

models indicate that the best synoptic forcing will have exited the
region, but low clouds and moist northeast flow may persist. May
end up with just a few leftover spot showers, but an abundance of
clouds with another day of below normal temps. Highs again mainly in
the 70s and it is possible that a few locations struggle to break
70.

Wednesday through Friday...

a long way off so this is certainly subject to change. Based on
latest model data though, initial upper trough lifts out by
Wednesday as a ridge of high pressure builds across the region. This
should allow for dry weather on wed. However, another impressive
shortwave trough may bring a period of showers isolated
thunderstorms Thu thu night with perhaps dry weather returning by
Friday. Temps should moderate some from earlier in the week, but
this next trough will likely keep readings below normal through the
end of the work week.

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

low - less than 30 percent.

Moderate - 30 to 60 percent.

High - greater than 60 percent.

Short term through Sunday ... High confidence.

Today...VFR. Increasing mid and high level cloudiness.

Onshore sea breezes at the coast. Slight chance of a shower near
nantucket around sunrise.

Tonight...VFR. Mainly mid-high clouds. Could see lowering
toward low-endVFR overnight. Local ifr ceilings in areas of fog
possible on the south coast, mainly CAPE cod and the islands.

Chance of showers late, mainly in ct ri SE ma. Wind becoming ne
and gusting to near 20 kt over the eastern ma coast well after
midnight.

Sunday...VFR except ifr MVFR southeast ma and southern ri in the
morning. Scattered showers southeast ma and ri in the morning
and in western ma and northern ct late in the afternoon.

Kbos terminal...VFR. Sea-breezes forecast around 15z today.

Kbdl terminal...VFR.

Outlook Sunday night through Wednesday ... Moderate confidence.

Sunday night through Tuesday... Moderate confidence.VFR conditions
early Sunday evening should deteriorate to MVFR-ifr later Sun night
into Mon morning from west to east in some showers, low clouds and
fog patches. MVFR-ifr conditions will likely persist the rest of
Monday and possibly into part of Tuesday.

Wednesday... Moderate confidence. MainlyVFR conditions expected.

Marine
Forecaster confidence levels...

low - less than 30 percent.

Moderate - 30 to 60 percent.

High - greater than 60 percent.

Short term through Sunday ... High confidence.

Today... Light northwest winds allowing for daytime sea breezes.

Winds becoming south over the eastern ma waters this
afternoon evening. Seas 1-3 ft.

Tonight... Winds shifting to the northeast as high pressure
builds to our north and low pressure passes to our south. Winds
gust to 20 kt, especially from CAPE ann to mass bay and
provincetown. Chance of showers late. Local visibilities reduced
to 1-3 miles in fog late. Seas 1-3 ft.

Sunday... Northeast winds continue at 15-20 kt with seas building
to 3-4 ft. Chance of showers, especially south coast in the
morning.

Outlook Sunday night through Wednesday ... Moderate confidence.

Sunday night through Tuesday... Moderate to high confidence. A
couple waves of low pressure tracking near or south of our waters
will generate an persistent east to northeast winds. The result
should be marginal small craft conditions at times across our
eastern waters, where wind gusts of 20 to 25 knots and 3 to 6 foot
seas are expected. Some showers and fog patches will also reduce
vsbys for mariners at times.

Wednesday... Moderate to high confidence. Ridge of high pressure
temporarily builds across the waters which should keep winds seas
below small craft thresholds.

Box watches warnings advisories
Ct... None.

Ma... None.

Ri... None.

Marine... None.

Synopsis... Field frank
near term... Field
short term... Field
long term... Frank
aviation... Field frank
marine... Field frank


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
44090 12 mi54 min 62°F
WAXM3 - Waquoit Bay Reserve, MA 17 mi73 min 1.9 72°F 1010 hPa67°F
BZBM3 - 8447930 - Woods Hole, MA 22 mi40 min 74°F 74°F1010.6 hPa
44020 - NANTUCKET SOUND 33 mi68 min 71°F1 ft1009.7 hPa (-0.3)
BLTM3 - 8447387 - Borden Flats Light at Fall River, MA 34 mi40 min NNW 1.9 G 4.1 74°F 1009.9 hPa
FRVM3 - 8447386 - Fall River, MA 34 mi40 min 73°F 76°F1011.2 hPa
FRXM3 35 mi40 min 74°F 63°F
44013 - BOSTON 16 NM East of Boston, MA 36 mi68 min W 5.8 G 5.8 71°F 69°F1 ft1009.8 hPa (+0.5)
BUZM3 - Buzzards Bay, MA 39 mi58 min WSW 8.9 G 8.9 74°F 1010.8 hPa (-0.0)
CPTR1 - 8452944 - Conimicut Light, RI 43 mi40 min NW 6 G 8 73°F 74°F1010.8 hPa
PRUR1 43 mi40 min 73°F 64°F
PTCR1 - 8452951 - Potter Cove, Prudence Island, RI 44 mi40 min N 1 G 2.9 72°F 1010.6 hPa
PVDR1 44 mi40 min NW 5.1 G 6 71°F 1010.4 hPa64°F
NAXR1 - Narragansett Bay Reserve, RI 44 mi73 min NNW 1.9 69°F 1010 hPa65°F
FOXR1 - 8454000 - Providence, RI 45 mi40 min N 6 G 7 73°F 71°F1010 hPa
NTKM3 - 8449130 - Nantucket Island, MA 45 mi40 min WSW 6 G 8.9 71°F 75°F1010.7 hPa
BHBM3 - 8443970 - Boston, MA 45 mi40 min 75°F 1009.5 hPa
NWPR1 - 8452660 - Newport, RI 47 mi40 min Calm G 6 74°F 70°F1010.5 hPa
44029 - Buoy A0102 - Mass. Bay/Stellwagen 48 mi114 min WSW 5.8 G 7.8 67°F 63°F1 ft1009.3 hPa
QPTR1 - 8454049 - Quonset Point, RI 48 mi40 min NW 4.1 G 5.1

Wind History for Borden Flats Light at Fall River, MA
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Plymouth, Plymouth Municipal Airport, MA11 mi66 minN 010.00 miFair64°F60°F87%1010.3 hPa
Otis Air National Guard Base, MA12 mi63 minNW 610.00 miFair68°F60°F78%1010.5 hPa
Hyannis, Barnstable Municipal-Boardman Airport, MA18 mi62 minNW 310.00 miFair73°F60°F64%1009.7 hPa
Marshfield Airport, MA20 mi63 minN 010.00 miFair68°F60°F78%1009.8 hPa
Provincetown Municipal Airport, MA22 mi62 minWNW 510.00 miFair69°F63°F81%1010.1 hPa
New Bedford, New Bedford Regional Airport, MA24 mi65 minN 010.00 miFair64°F61°F90%1010.1 hPa

Wind History from PYM (wind in knots)
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Last 24hrNW6W66W5W6SW5W8SW5SW9W8SW11SW9W7SW4SW4SW3SW4SW3W7SW5CalmCalmCalmCalm
1 day agoW3W33W7W7SW7SW12
G15
SW11SW12SW11SW11SW9SW6S3SW6SW5CalmCalmS3SW3SW3W4NW4NW6
2 days agoSW7SW5SW8SW10SW8SW9
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SW7S4CalmCalmCalmCalmCalmCalmCalmCalmCalmCalm

Tide / Current Tables for Cape Cod Canal, Bournedale, Massachusetts
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Cape Cod Canal
Click for Map
Sat -- 04:23 AM EDT     -0.85 feet Low Tide
Sat -- 04:33 AM EDT     Moonrise
Sat -- 05:26 AM EDT     Sunrise
Sat -- 10:28 AM EDT     6.78 feet High Tide
Sat -- 04:37 PM EDT     -0.29 feet Low Tide
Sat -- 07:31 PM EDT     Moonset
Sat -- 08:09 PM EDT     Sunset
Sat -- 10:43 PM EDT     7.92 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
5.842.10.3-0.8-0.60.52.145.76.76.75.94.52.81.2-0.1-0.20.82.54.46.37.67.9

Tide / Current Tables for Cape Cod Canal, Massachusetts Current
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Cape Cod Canal
Click for Map
Sat -- 02:47 AM EDT     0.20 knots Slack
Sat -- 04:33 AM EDT     Moonrise
Sat -- 05:27 AM EDT     Sunrise
Sat -- 05:55 AM EDT     4.66 knots Max Flood
Sat -- 09:20 AM EDT     -0.22 knots Slack
Sat -- 12:06 PM EDT     -4.65 knots Max Ebb
Sat -- 03:11 PM EDT     0.21 knots Slack
Sat -- 06:13 PM EDT     4.49 knots Max Flood
Sat -- 07:31 PM EDT     Moonset
Sat -- 08:10 PM EDT     Sunset
Sat -- 09:27 PM EDT     -0.11 knots Slack
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
-4.8-4.2-2.91.63.64.44.74.43.62-2.8-4.2-4.6-4.4-3.4-1.42.94.14.54.33.72.2-2.6-4.2

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 (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.