Saturday, August24, 2019 L-36.com


Marine Weather and Tides
Madaket, MA

Version 3.4
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7/25/2019 New feature in the Airports section gives a link to 5 minute updates for data reports.
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Sunrise 6:01AMSunset 7:33PM Saturday August 24, 2019 12:26 AM EDT (04:26 UTC) Moonrise 12:00AMMoonset 2:40PM Illumination 39% 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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ANZ273 Expires:201908240800;;098980 Fzus71 Kbox 232012 Mwsbox Marine Weather Statement National Weather Service Boston/norton Ma 412 Pm Edt Fri Aug 23 2019 Anz232>235-237-254>256-271>273-240800- Nantucket Sound-vineyard Sound-buzzards Bay-rhode Island Sound- Block Island Sound- Coastal Waters From Provincetown Ma To Chatham Ma To Nantucket Ma Out 20 Nm- Coastal Waters Extending Out To 25 Nm South Of Marthas Vineyard And Nantucket- Coastal Waters From Montauk Ny To Marthas Vineyard Extending Out To 20 Nm South Of Block Island- Ocean Waters From Provincetown To Nantucket 20 To 35 Nm Offshore- Ocean Waters From Marthas Vineyard To Nantucket From 25 To 45 Nm Offshore- Ocean Waters From Montauk Ny To Marthas Vineyard From 25 To 40 Nm Offshore- 412 Pm Edt Fri Aug 23 2019
.a tropical storm likely to develop off the southeast u.s. Coast.. An area of low pressure located just offshore of southeast florida is expected to become a tropical depression or tropical storm as it moves near or offshore of the u.s. Coast from east-central florida to north carolina through early next week. While it is too soon to determine the exact track and intensity of this developing tropical system, everyone should Monitor later forecasts. At the very least this system will generate large seas as it approaches southern new england from the south next week. In addition, ahead of this system large high pressure over canada will combine with a frontal wave south of new england this weekend to result in fairly strong northeast winds for this time of year, with speeds up to 30 kts. Given the long fetch seas south of nantucket, marthas vineyard and block island may build to 4 to 7 ft or greater Sunday. Thus exercise caution if venturing into the southern ocean waters of massachusetts and rhode island beginning Sunday and continuing into early to middle of next week.
ANZ200 950 Pm Edt Fri Aug 23 2019
Synopsis for massachusetts and rhode island coastal waters.. High pres centered over the great lakes late this evening will build east over quebec and northern new england overnight and Sat. The high will shift east toward the canadian maritimes Sun and linger there through mid week. A tropical depression is likely to form off the coast of florida early next week. This system may track close enough to effect the coastal waters by mid week with elevated seas. 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 Madaket, MA
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location: 40.5, -70.62     debug


Area Discussion for - Boston, MA
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Fxus61 kbox 240149
afdbox
area forecast discussion
national weather service boston norton ma
949 pm edt Fri aug 23 2019

Synopsis
Canadian high pressure will bring drier and less humid air to
new england and eventually a fall-like airmass this weekend.

Expect mild afternoons and cool nights with dry weather Saturday
followed by possibly a few showers Sunday especially eastern ma
into ri, but a washout is not expected. High pressure settles
over the canadian maritimes early next week supporting dry cool
weather here along with breezy conditions across CAPE cod and
the islands. Meanwhile we'll be watching a potential tropical
system tracking from the bahamas to well south of new england
early to middle of next week.

Near term until 6 am Saturday morning
At 930 pm, satellite showed thicker mid and high clouds over ri
and SE mass, shifting east and offshore. Thinner clouds over
the interior were also shifting to the east. 9 pm observations
showed north winds at 10 mph or less, mostly less. Dew points
in the comfortable 50s along north of a boston-hartford line
and 60-65 over southern ri and SE mass.

Trend for the rest of the night will be for clear or clearing
skies. With light winds and clear clearing skies, expect min
sfc temps to reach the 50s in the interior and 60-65 along the
coast.

Short term 6 am Saturday morning through Saturday night
350 pm update ...

Saturday ...

1025+ mb high over ontario advects eastward into quebec,
providing a dry nne flow into southern new england. Expect highs
in the 70s and dew pts in the upper 40s to lower 50s. Definitely
a touch of early fall in the air. Cross sections reveal some
cirrus and diurnal CU scu so expect a mix of Sun and clouds
Saturday. Overall a real nice day by late aug standards.

Saturday night ...

northeast pressure gradient increases as frontal wave develops
well south of new england but combines with 1030 mb high (yeah a
sign of early fall) over the maritimes. Thus becoming breezy and
with a surge of wind and moisture off the atlantic expecting
scattered showers to come onshore especially toward Sunday
morning and over eastern ma into ri. Remainder of the region
should remain dry until Sunday.

Long term Sunday through Friday
350 pm update ...

highlights...

* expect much cooler than normal temperatures Sunday and Monday
especially along the east coast
* onshore winds will bring spotty light rain or showers at times
into mid week
* temperatures return to near normal levels around mid week
* another chance for showers late Wednesday into Thursday
details...

Sunday through Tuesday...

this period of the forecast will feature mostly dry conditions with
cooler than average temperatures throughout and comfortable
humidity. Sunday we see the high over northern new england shift
east a bit, bringing northerly winds around to the northeast. While
most of the column is very dry, below 850mb moisture advection off
the ocean will bring some low level cloud cover and light showers or
drizzle. The only locations that should deal with this would be
eastern ma into ri with clearer skies to further west. Not a washout
by any means, but could see scattered drizzle. A tightening pressure
gradient on the south end of the high will bring increasingly gusty
northeast winds, especially on the southern waters and along the
south coast where gusts will reach 25-30 mph. Those on the water
will likely see increased seas as well. Temperatures are quite a bit
below normal given h85 temps of 8c and onshore flow... Those along
the east coast may not make it out of the 60s.

Monday and Tuesday the inverted ridge of high pressure lingers over
sne helping keep things dry while the mid level low moves out
replaced by weak ridging. Mid level height rises and some drying at
the low levels should keep us mostly precip free, but with lingering
low mid level clouds each day. Onshore E NE flow continues
throughout keeping the immediate east coast cooler. Highs remain in
the low 70s, 5-10 degrees below average for late august. Comfortable
humidity sticks around too, with dewpoints in the 50s to low 60s. As
the high moves away the gradient relaxes and the gusty winds along
the south coast should subside through the day Monday.

Wednesday through Friday...

high degree of uncertainty with how mid-late week plays out,
dependent on the trajectory of two low pressure systems, including
one potential tropical system currently in the early stages of
development off the coast of florida which may pass sne somewhere
off the coast around mid week. At this point confidence is
increasing that we'll see temperatures moderating back toward normal
by Wed thur into the 70s and 80s as a warm frontal boundary moves
north. This, associated with a large low pressure system moving into
the hudson bay area. Ahead of its cold front warm moist air is
pulled up over the east coast Wednesday Thursday bringing rain and
thunderstorm chances back to the forecast late Wednesday and
Thursday. At this point the system off of florida looks to stay well
offshore of sne, phasing with the passing trough over the maritimes
by late week. This should limit any impacts in southern new england
to potentially some higher surf and rough seas, but given that this
is still 5-6 days out, much too soon to get into any
details... Something we will be monitoring over the next week.

Aviation 02z Saturday through Wednesday
Forecaster confidence levels...

low - less than 30 percent.

Moderate - 30 to 60 percent.

High - greater than 60 percent.

Short term through Saturday night ... Moderate confidence.

Tonight ... VFR and dry weather with light nnw winds.

Saturday ... VFR with nnw winds becoming nne. Dry weather
continues.

Saturday night ... VFR to start but becoming MVFR from east to
west as nne onshore flow increases up to 20 kt across eastern
ma.

Kbos terminal... High confidence in taf
kbdl terminal... High confidence in taf.

Outlook Sunday through Wednesday ... Moderate to high confidence.

Sunday: mainlyVFR, with local MVFR possible. Breezy. Slight
chance shra.

Sunday night: mainlyVFR, with local MVFR possible. Breezy.

Monday:VFR. Breezy.

Monday night:VFR.

Tuesday:VFR. Breezy.

Tuesday night: mainlyVFR, with local MVFR possible. Breezy.

Slight chance shra.

Wednesday: mainlyVFR, with local MVFR possible. Slight chance
shra, isolated tsra.

Marine
Forecaster confidence levels...

low - less than 30 percent.

Moderate - 30 to 60 percent.

High - greater than 60 percent.

Short term through Saturday night ... High confidence.

Tonight ...

large high pressure moves from the northern great lakes into
ontario providing dry weather across the southern new england
waters along with a modest nnw wind. Observed seas at 9 pm were
3 feet or less. All of this continues overnight.

Saturday ...

large high pressure moves from ontario to quebec with modest nne
winds but dry weather continues.

Saturday night ...

a series of weak waves of low pres develop off the mid atlc
coast. This combines with strong 1030+ mb high pres over the
maritimes to yield NE 20-30 kt across the southern new england
waters. Strongest winds likely south of CAPE cod and the
islands. Scattered showers may lower vsby at times.

Outlook Sunday through Wednesday ... Moderate confidence.

Sunday: low risk for small craft advisory winds with gusts up
to 30 kt. Seas up to 5 ft. Slight chance of rain showers.

Sunday night: low risk for small craft advisory winds with
gusts up to 25 kt. Seas up to 5 ft.

Monday: low risk for small craft advisory winds with gusts up
to 25 kt. Seas up to 5 ft. Slight chance of rain showers.

Monday night through Tuesday night: winds less than 25 kt. Seas
up to 5 ft. Slight chance of rain showers.

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

Box watches warnings advisories
Ct... None.

Ma... None.

Ri... None.

Marine... None.

Synopsis... Nocera bw
near term... Wtb nocera bw
short term... Nocera
long term... Bw
aviation... Wtb nocera bw
marine... Wtb nocera bw


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
44097 - Block Island, RI (154) 42 mi57 min 76°F3 ft
NTKM3 - 8449130 - Nantucket Island, MA 61 mi57 min NNW 4.1 G 7 72°F 76°F1015.7 hPa
BUZM3 - Buzzards Bay, MA 66 mi87 min N 11 G 13 71°F 1016.3 hPa (+0.7)
44020 - NANTUCKET SOUND 71 mi37 min N 18 G 21 71°F 75°F1 ft61°F

Wind History for Nantucket Island, MA
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Nantucket, Nantucket Memorial Airport, MA60 mi2.6 hrsN 010.00 miFair68°F61°F78%1015.1 hPa

Link to 5 minute data for KACK

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Last 24hrSW9W9NW10SW5W7W4N4NE3N8N12N13N8N9NW5NW6N7N9N7NE3CalmNE3CalmN3N5
1 day agoSW11SW11SW7SW6S4CalmS3CalmSW4SW5SW10SW8SW11SW10SW11SW8SW13SW10SW13SW8SW7SW9SW11W9
2 days agoS5S6S6S4S7SE7SE7SE9SE8SE8S8SW15
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Tide / Current Tables for No Man's Land, Massachusetts
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No Man's Land
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Sat -- 02:19 AM EDT     2.45 feet High Tide
Sat -- 06:01 AM EDT     Sunrise
Sat -- 07:37 AM EDT     0.61 feet Low Tide
Sat -- 02:42 PM EDT     Moonset
Sat -- 02:55 PM EDT     3.03 feet High Tide
Sat -- 07:29 PM EDT     Sunset
Sat -- 09:03 PM EDT     0.78 feet Low Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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1.82.22.42.421.40.90.70.60.81.11.41.92.42.932.82.31.71.20.90.80.81

Tide / Current Tables for No Man's Land, Massachusetts (2)
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No Man's Land
Click for Map
Sat -- 02:20 AM EDT     2.46 feet High Tide
Sat -- 06:01 AM EDT     Sunrise
Sat -- 07:59 AM EDT     0.46 feet Low Tide
Sat -- 02:42 PM EDT     Moonset
Sat -- 02:55 PM EDT     3.08 feet High Tide
Sat -- 07:29 PM EDT     Sunset
Sat -- 08:58 PM EDT     0.67 feet Low Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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1.92.22.42.42.11.610.60.50.61.11.522.52.93.12.92.41.81.20.80.70.81.1

Weather Map and Satellite Images
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Wind Forecast for Boston, MA (0,6,7,8)
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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.