Thursday, August22, 2019 L-36.com


Marine Weather and Tides
Tiverton, RI

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 5:59AMSunset 7:36PM Thursday August 22, 2019 1:32 PM EDT (17:32 UTC) Moonrise 11:18PMMoonset 12:38PM Illumination 54% 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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ANZ236 Narragansett Bay- 117 Pm Edt Thu Aug 22 2019
This afternoon..SW winds 5 to 10 kt. Waves 2 to 3 ft.
Tonight..SW winds 5 to 10 kt, becoming nw after midnight. Waves 2 to 3 ft. Patchy fog. A chance of showers. Vsby 1 to 3 nm.
Fri..NW winds around 5 kt. Waves 2 to 3 ft. A chance of showers. Vsby 1 to 3 nm.
Fri night..NW winds 5 to 10 kt. Waves 2 to 3 ft.
Sat and Sat night..NE winds 5 to 10 kt. Waves around 2 ft.
Sun through Mon..NE winds 10 to 15 kt with gusts up to 20 kt. Waves 2 to 3 ft. A chance of rain.
Mon night..NE winds 5 to 10 kt. Waves 2 to 3 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 117 Pm Edt Thu Aug 22 2019
Synopsis for massachusetts and rhode island coastal waters.. A cold front approaches the waters this evening, then lingers over the southern waters tonight. Showers and a few Thunderstorms will move along and ahead of the front this afternoon and tonight. The front moves out to sea Friday. High pressure buids from canada with dry weather for Friday and Saturday. A northeast wind persists Sunday and Monday as the high shifts over the maritimes. 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 Tiverton, RI
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location: 41.63, -71.21     debug


Area Discussion for - Boston, MA
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Fxus61 kbox 221519
afdbox
area forecast discussion
national weather service boston norton ma
1119 am edt Thu aug 22 2019

Synopsis
Another very warm and humid day as a cold front approaches from
from northern portions of ny and new england today. A few
showers and thunderstorms are possible this afternoon and
evening as the cold front approaches, but the storms will not
be as intense or widespread as yesterday Wednesday. Showers and
thunder may linger through the night as a wave of low pressure
moves along the front. High pressure then moves across canada
into the maritimes, with steady onshore winds bringing cool
temperatures this weekend into early next week. There may also
be a chance for a few showers Sunday through Tuesday.

Near term until 8 pm this evening
11 am update...

low clouds and fog from earlier this morning has burned off and
lifting into a higher deck of scattered clouds. Cold front
across northern portions of ny vt nh will move south today but
prefrontal winds will be west-southwest. This will begin to dry
out the boundary layer which will lower dew pts and lower capes.

So trending less humid this afternoon with highest capes up to
1500 j kg focusing across ri and southeast ma. This will limit
potential for any strong storms to this area. In addition as
winds veer to the west to southwest winds this will limit low
level convergence. So in a nutshell not expecting convection to
be as widespread or severe as yesterday.

Otherwise, warm and humid today although as mentioned above dew
pts will slowly fall from the 70s into the 60s this afternoon
especially northwest of i-95 in ri and eastern ma.

Short term 8 pm this evening through 6 pm Friday
Tonight...

the right entrance region of the upper jet will be overhead and
the sfc cold front aligned with the flow ahead of the trough
axis. Expect the front to stall for a short time tonight, and a
low pressure wave may develop along the front. The wave would
pass south of our area, but maintain a chance of
showers scattered tstms during the night. Best chance would be
in ct-ri-se mass.

Pw remains high through the night and the moisture column
remains deep. Look for continued chance of local downpours
during this time.

We will be north west of the cold front during the night, so
expect signs of an airmass change with dew points 55 northwest
to 65 southeast. Expect min temps in the upper 50s and 60s.

Friday...

upper trough sweeps down from canada. This brings small cold
advection aloft, as well as drier air at all levels.

Main question for Friday is... Will it shower or stay dry. The
gfs dries out the airmass and precludes any precipitation. The
ecmwf shows showers moving up from the southwest, likely in
response to the upper trough and jet entrance region.

For now we will show a few showers lingering along the south
coast early, then moving out to sea. Otherwise dry weather.

Drying of the surface air will continue with dew points falling
into the 50s to around 60. Mixing reaches above 850 mb with
temperatures supporting MAX sfc temps in the mid 70s to around
80.

Long term Friday night through Wednesday
Highlights...

* expect mild temperatures and dry conditions Saturday
* cooler than normal temperatures expected Saturday night
through Monday, with spotty light rain or showers at times
* temperatures moderate by mid week, with another chance for
showers Tuesday night and Wednesday
details...

Friday night and Saturday...

expect dry conditions as large high pressure slowly builds e
across ontario and quebec. Expect a general northerly wind
Friday night and early Saturday which will gradually shift to ne
during the day. After mostly sunny skies across the region into
Saturday afternoon, will begin to see some clouds develop later
in the day. Some spotty light rain may develop across NE mass
around 21z or so.

Temps will top off in the 70s, mildest across interior E mass
into ri as well as the lower ct valley.

Saturday night through Monday...

00z model suite has come into somewhat better agreement, though
some timing and track differences with the development of spotty
light rain and or showers.

As the large high anchors across northern new england into
eastern canada, winds become a steady e-ne during most of this
timeframe. Noting an increasing pres gradient on the southern
extent of the high, which could mean gusty winds across coastal
areas during the daytime hours Sunday and Monday. Gusts may
reach up to around 25 mph there. This will bring in cool
temperatures both Sunday and Monday with highs in the lower-mid
70s, though it may not even break 70 along the E coast.

With the onshore flow, will see a steady fetch of low level
moisture working westward. This could bring patchy light rain
and or showers, with the best chances across the coastal plain.

Have carried chance pops through late Monday, but can't rule out
isolated showers further inland with the easterly flow.

Tuesday and Wednesday...

quite a bit of model solution spread amongst the 00z members.

Have used a non-canadian blend for this portion of the forecast.

Temperatures moderate during this timeframe as the high begins
to shift E as winds shift to s-sw. However, another front will
approach later Tuesday night and Wednesday, bringing a chance
for showers.

Aviation 15z Thursday through Monday
Forecaster confidence levels...

low - less than 30 percent.

Moderate - 30 to 60 percent.

High - greater than 60 percent.

Short term through Friday ... Moderate confidence.

15z update ...

ifr lifr along south coast of ri into buzzards bay will slowly
erode this afternoon. OtherwiseVFR with isolated MVFR in shower t-storm
this afternoon with a focus across ri and southeast ma. Most
storms if not all storms should remain subsevere. Previous
discussion below.

==========================================================================
today... Areas of MVFR lifr through around 14z, possibly a bit
longer across S coastal terminals. OtherwiseVFR. Scattered
showers thunderstorms possible by the afternoon. Local downpours
may reduce vsbys to ifr and ceilings to MVFR as any
shower tstms go past. Strong thunderstorm winds are possible,
especially across ct-ri-eastern ma.

Tonight...

vfr with brief MVFR ifr possible in scattered showers tstms.

Friday...

vfr. Scattered showers along the south coast in the morning.

Kbos terminal... Moderate confidence in TAF due to
timing location of afternoon evening showers thunderstorms.

Kbdl terminal... Moderate confidence in TAF due to
timing location of afternoon evening showers thunderstorms.

Outlook Friday night through Monday ... Moderate confidence
Friday night through Saturday:VFR.

Saturday night: ifr. Breezy.

Sunday: mainlyVFR, with local ifr possible. Breezy. Slight
chance ra.

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

Monday: breezy.

Marine
Forecaster confidence levels...

low - less than 30 percent.

Moderate - 30 to 60 percent.

High - greater than 60 percent.

Short term through Friday ... High confidence.

Today and tonight...

winds have diminished below 25 kt, but seas on the southern
outer waters remain at 5 feet. We will end the SCA on ri and
block island sound, but maintain the headline through the day on
the southern and southeast outer waters.

Vsbys may also be reduced at times in fog this morning. A few
showers and scattered thunderstorms are possible moving off the
land during the afternoon and evening. These storms could
produce strong wind gusts and create poor visibility in
downpours.

Friday...

winds gust to 20 kt with seas less than 5 feet. Leftover
showers thunder in the morning on the southern waters, but these
should move out to sea.

Outlook Friday night through Monday ... Moderate confidence.

Friday night: winds less than 25 kt. Seas locally approaching
5 ft.

Saturday: winds less than 25 kt.

Saturday night: winds less than 25 kt. Seas locally approaching
5 ft. Visibility 1 nm or less.

Sunday: low risk for small craft advisory winds with gusts up
to 25 kt. Areas of seas approaching 5 ft. Slight chance of
rain. Local visibility 1 nm or less.

Sunday night: winds less than 25 kt. Seas up to 5 ft.

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

Box watches warnings advisories
Ct... None.

Ma... None.

Ri... None.

Marine... Small craft advisory until 8 pm edt this evening for
anz254>256.

Synopsis... Wtb nocera evt
near term... Wtb evt
short term... Wtb
long term... Evt
aviation... Wtb nocera evt
marine... Wtb evt


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
FRXM3 5 mi56 min 81°F 75°F
BLTM3 - 8447387 - Borden Flats Light at Fall River, MA 5 mi44 min WSW 7 G 8 80°F 1009.9 hPa
PRUR1 5 mi50 min 77°F 74°F
FRVM3 - 8447386 - Fall River, MA 6 mi56 min 80°F 80°F1010.4 hPa
NAXR1 - Narragansett Bay Reserve, RI 7 mi107 min SW 6 81°F 1011 hPa76°F
PTCR1 - 8452951 - Potter Cove, Prudence Island, RI 7 mi44 min SW 4.1 G 9.9 83°F 1010.5 hPa
CPTR1 - 8452944 - Conimicut Light, RI 9 mi44 min SSE 6 G 6 78°F 78°F1010.2 hPa
NWPR1 - 8452660 - Newport, RI 11 mi44 min SSW 8 G 8.9
QPTR1 - 8454049 - Quonset Point, RI 11 mi50 min S 13 G 15
PVDR1 14 mi50 min S 7 G 8.9 80°F 1010.3 hPa76°F
FOXR1 - 8454000 - Providence, RI 16 mi44 min S 8.9 G 11 82°F 74°F1009.8 hPa
BUZM3 - Buzzards Bay, MA 19 mi32 min SSW 9.9 G 11 72°F 1010.9 hPa (-0.9)
BZBM3 - 8447930 - Woods Hole, MA 29 mi44 min 74°F 74°F1010.6 hPa
WAXM3 - Waquoit Bay Reserve, MA 36 mi107 min SSE 2.9 84°F 1011 hPa76°F
44097 - Block Island, RI (154) 46 mi32 min 77°F4 ft
44090 49 mi62 min 68°F

Wind History for Borden Flats Light at Fall River, MA
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Newport, Newport State Airport, RI7 mi39 minVar 610.00 miFair83°F75°F77%1009.9 hPa
N. Kingston / Quonset, RI11 mi42 minS 88.00 miMostly Cloudy84°F75°F74%1009.5 hPa
New Bedford, New Bedford Regional Airport, MA13 mi39 minSSW 710.00 miFair87°F75°F67%1009.5 hPa
Providence, Theodore Francis Green State Airport, RI14 mi41 minSE 410.00 miLight Rain82°F75°F82%1010 hPa
Taunton, Taunton Municipal Airport, MA21 mi40 minVar 410.00 miPartly Cloudy89°F73°F59%1009.1 hPa
Pawtucket, North Central State Airport, RI22 mi36 minWNW 710.00 miPartly Cloudy85°F73°F70%1005 hPa

Link to 5 minute data for KUUU

Wind History from UUU (wind in knots)
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1 day agoNW5S6S8----SW3S4S4------------Calm--SE4S4S4------S6S11
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2 days agoSW7S9--S10
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E3CalmCalmCalm--------CalmCalmCalmCalmNW5NW6NW8NW8NW5NW5

Tide / Current Tables for Anthony Point, Sakonnet River, Narragansett Bay, Rhode Island
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Anthony Point
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Thu -- 12:44 AM EDT     3.36 feet High Tide
Thu -- 05:54 AM EDT     0.48 feet Low Tide
Thu -- 06:00 AM EDT     Sunrise
Thu -- 12:38 PM EDT     Moonset
Thu -- 01:17 PM EDT     3.78 feet High Tide
Thu -- 06:32 PM EDT     0.83 feet Low Tide
Thu -- 07:34 PM EDT     Sunset
Thu -- 11:17 PM EDT     Moonrise
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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3.33.432.31.40.70.50.71.31.92.533.53.83.73.12.21.40.90.91.21.62.12.4

Tide / Current Tables for Westport River Entrance, Massachusetts Current
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Westport River Entrance
Click for Map
Thu -- 01:57 AM EDT     -0.01 knots Slack
Thu -- 04:25 AM EDT     -2.62 knots Max Ebb
Thu -- 06:00 AM EDT     Sunrise
Thu -- 07:47 AM EDT     0.00 knots Slack
Thu -- 11:59 AM EDT     1.70 knots Max Flood
Thu -- 12:37 PM EDT     Moonset
Thu -- 02:20 PM EDT     -0.00 knots Slack
Thu -- 04:50 PM EDT     -2.63 knots Max Ebb
Thu -- 07:33 PM EDT     Sunset
Thu -- 08:15 PM EDT     0.00 knots Slack
Thu -- 11:17 PM EDT     Moonrise
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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1.71.2-0.1-1.6-2.5-2.5-1.7-0.70.20.81.21.61.71.40.5-1-2.3-2.6-2.1-1.1-0.20.511.4

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 (13,3,4,5)
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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.