Thursday, September19, 2019 L-36.com


Marine Weather and Tides
Tiverton, RI

Version 3.4
NOTICE
9/4/2019 Fixed the weather maps due to NOAA moving them.
7/25/2019 New feature in the Airports section gives a link to 5 minute updates for data reports.
6/2/2019. Many thanks to a user for reporting an error on one of the Edit pages. The switch to PHP 7.2 caused many pages that previously worked to quit working. I fixed many but I still depend on users to report ones I missed. Please report errors HERE or send an email to me at L-36.com. Allen

Sunrise 6:27AMSunset 6:49PM Thursday September 19, 2019 4:02 PM EDT (20:02 UTC) Moonrise 9:51PMMoonset 11:33AM Illumination 69% Phase: Waning Gibbous; Moon at 20 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- 332 Pm Edt Thu Sep 19 2019
Tonight..SE winds around 5 kt, becoming W after midnight. Waves around 2 ft.
Fri..W winds 5 to 10 kt. Waves 2 to 3 ft.
Fri night..W winds 5 to 10 kt. Waves around 2 ft.
Sat..NW winds around 5 kt, becoming sw in the afternoon. Waves around 2 ft in the morning, then 1 foot or less.
Sat night..S winds around 5 kt. Waves 1 foot or less.
Sun..S winds 5 to 10 kt, increasing to 10 to 15 kt in the afternoon. Waves 1 foot or less, then around 2 ft in the afternoon.
Sun night..SW winds 10 to 15 kt. Waves around 3 ft.
Mon..SW winds 10 to 15 kt with gusts up to 20 kt. Waves around 3 ft. A chance of showers in the afternoon.
Mon night..SW winds 10 to 15 kt with gusts up to 20 kt, becoming W 5 to 10 kt after midnight. Waves around 3 ft. A chance of showers.
Tue..NW winds 5 to 10 kt. Waves 2 to 3 ft. A chance of showers in the morning.
Tue night..N 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 332 Pm Edt Thu Sep 19 2019
Synopsis for massachusetts and rhode island coastal waters.. High pres builds slowly builds S of the waters Fri through Sun. Meanwhile E swell from distant hurricane humberto will impact the waters during the next 24 to 48 hours. 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 191942
afdbox
area forecast discussion
national weather service boston norton ma
342 pm edt Thu sep 19 2019

Synopsis
High pressure remains in control through the weekend with
summerlike temperatures returning. A cold front brings the
next chance of showers early next week. More seasonable
temperatures follow for the rest of the week with a risk of
showers on Thursday as another cold front approaches. Distant
hurricane humberto will bring high surf and dangerous rip
currents through Friday.

Near term until 6 am Friday morning
Another cool night on tap with high pres providing clear skies
and light winds although some high clouds may spill into the
region overnight. Not quite as cold as last night but expect
some of the colder spots in western ma and interior eastern ma
to drop into the mid upper 30s with patchy frost possible. No
frost headlines as any frost will be very patchy. Lows in the
40s elsewhere.

Short term 6 am Friday morning through Friday night
High pres remains in control. A weak shortwave riding over the
ridge will bring some mid high clouds during Fri but still
mostly sunny. After a chilly start, a significant warmup is
expected during the afternoon. 925 mb temps 18-19c will support
highs reaching the mid upper 70s. Mainly clear skies Fri night
but not as cool as airmass moderates. Lows will be mainly in the
50s.

Swell from humberto will also continue the threat for rough
surf and dangerous rip currents. With warming conditions Friday,
will continue the high surf advisory through much of Friday
along ocean-exposed portions of the coast.

Long term Saturday through Thursday
Highlights...

* dry weather, mild days and seasonable nights for the weekend.

Elevated threat for lingering rip currents Saturday.

* cold front brings at least showers to the area later Monday into
Tuesday.

* brief dry weather Wednesday, turning unsettled late next week.

Details...

Saturday - Sunday...

still anticipating a great weekend weather-wise, as an amplified
ridge aloft (approx. 1-2 standard deviations above normal
geopotential height anomalies per gefs) builds and crests over the
region. Abundant sunshine, dry weather and 850 mb temperatures
around the mid-teens celsius support above-normal temperatures for
late september, with good diurnal temperature ranges. Of the two
days, Sunday projects to be the warmest areawide given warmer 850 mb
temperatures and more of a southerly gradient component to the flow
affording less inland penetration of sea breezes near the coast.

Looking for highs in the mid-upper 70s to mid 80s on Saturday
(coolest along the coast CAPE and islands), with highs well into the
80s on Sunday. Lows mainly upper 50s to low-mid 60s.

With potential for several to be heading to the beaches on Saturday,
still will be some concern for rip currents lingering from
humberto's passage. Seems likely a rip current statement would be
needed. High surf issues don't look as likely, with wave heights
generally under 5 feet and a lowering trend to waves.

Monday - Tuesday...

cold front continues to be a focal point for more active weather in
this period. Past couple GFS deterministic model runs have slowed
the front's eastward progression down by a few hours, though it
still is on the faster side compared to the gem and ecmwf. So still
some timing issues to iron out, but some loose consensus that Monday
late-afternoon Monday through overnight early Tuesday as an
approximate frontal passage. ECMWF is still slower than that and
would lead to a continuation of wet weather on the south coast, cape
and islands through a larger part of Tuesday.

Dynamics look favorable and low- and mid-level wind fields are
pretty robust Monday; however guidance lapse rates in mid-levels are
weak, and it would take greater heating instability to trigger
thunderstorms at this point. Will continue to leave as showers for
now but the thunder potential would be greater if more instability
is realized then currently progged. Pwats climb to about 1.4-1.7"
supporting at least a brief downpour threat. Regardless, this
continues to be the next bonafide chance at rains.

Midweek:
larger disagreement in model solutions then becomes apparent for
Wednesday into Friday. Some of this disagreement comes from models'
varied handling of shortwave energy digging into the intermountain
west southern rockies Tuesday. International guidance keeps this
disturbance closed off and detached from the larger westerlies,
which in turn keeps our area dry with seasonable temperatures. On
the other hand the GFS shows less amplitude to this shortwave trough
aloft and would verbatim indicate a brief spell of quiet weather
early Wednesday before isentropically forced showers enter the
picture for Wednesday night.

While the gem and the GFS bring a strong cold frontal passage
through on Thursday with seasonal early fall-like weather for Friday
- the ECMWF washes the front out Thursday and instead amplifies an
upper-level ridge over the east coast, which would bring above
normal temperatures back into southern new england by late week.

Will take a blended guidance approach to the forecast for this
period given the larger variability in model solutions.

Aviation 19z Thursday through Tuesday
Forecaster confidence levels...

low - less than 30 percent.

Moderate - 30 to 60 percent.

High - greater than 60 percent.

Short term through Friday night ... High confidence.

Vfr through the period. Diminishing NE wind this afternoon
cape islands.

Kbos terminal... High confidence in taf.

Kbdl terminal... High confidence in taf.

Outlook Saturday through Tuesday ...

Saturday through Sunday:VFR.

Sunday night:VFR. Breezy.

Monday: mainlyVFR, with areas MVFR possible. Breezy. Chance
shra.

Monday night: mainly MVFR, with areasVFR possible. Breezy.

Chance shra.

Tuesday: mainlyVFR, with areas MVFR possible. Slight chance
shra.

Marine
Forecaster confidence levels...

low - less than 30 percent.

Moderate - 30 to 60 percent.

High - greater than 60 percent.

Short term through Friday night ... High confidence.

Light winds will continue. However, E swell from hurricane
humberto will result in 5-8 ft seas over the outer waters,
gradually subsiding Fri night.

Outlook Saturday through Tuesday ... Moderate confidence.

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

Saturday night through Sunday: winds less than 25 kt.

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

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

Monday night: winds less than 25 kt. Seas up to 5 ft. Chance of
rain showers.

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

Chance of rain showers.

Box watches warnings advisories
Ct... None.

Ma... High surf advisory until 6 pm edt Friday for maz020-022>024.

High surf advisory from midnight tonight to 6 pm edt Friday
for maz007-019.

Ri... High surf advisory until 6 pm edt Friday for riz006>008.

Marine... Small craft advisory until 8 am edt Saturday for anz250-
254>256.

Small craft advisory from 6 am Friday to 8 am edt Saturday for
anz251.

Synopsis... Kjc loconto
near term... Kjc
short term... Kjc
long term... Loconto
aviation... Kjc loconto
marine... Kjc loconto


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
FRXM3 5 mi51 min 67°F 44°F
BLTM3 - 8447387 - Borden Flats Light at Fall River, MA 5 mi45 min NE 6 G 7 73°F 1025.7 hPa
PRUR1 5 mi45 min 67°F 44°F
FRVM3 - 8447386 - Fall River, MA 6 mi51 min 67°F 68°F1026.1 hPa
NAXR1 - Narragansett Bay Reserve, RI 7 mi78 min N 4.1 68°F 1026 hPa45°F
PTCR1 - 8452951 - Potter Cove, Prudence Island, RI 7 mi45 min N 1 G 5.1 67°F 1026.4 hPa
CPTR1 - 8452944 - Conimicut Light, RI 9 mi45 min W 2.9 G 4.1 65°F 67°F1025.6 hPa
NWPR1 - 8452660 - Newport, RI 11 mi51 min NNW 6 G 8.9 65°F 61°F1025.7 hPa
QPTR1 - 8454049 - Quonset Point, RI 11 mi51 min ENE 4.1 G 5.1 65°F 67°F1026 hPa
PVDR1 14 mi45 min NW 2.9 G 5.1 70°F 1025.9 hPa40°F
FOXR1 - 8454000 - Providence, RI 16 mi45 min SSE 1.9 G 5.1 67°F 66°F1025.5 hPa
BUZM3 - Buzzards Bay, MA 19 mi63 min NE 12 G 13 61°F 1026.1 hPa (-1.2)
BZBM3 - 8447930 - Woods Hole, MA 29 mi51 min 65°F 67°F1025.5 hPa
WAXM3 - Waquoit Bay Reserve, MA 36 mi78 min NW 4.1 64°F 1026 hPa48°F
44097 - Block Island, RI (154) 46 mi33 min 68°F5 ft
44090 49 mi33 min 63°F1 ft

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 mi70 minN 710.00 miFair69°F46°F44%1025.6 hPa
N. Kingston / Quonset, RI11 mi73 minENE 810.00 miClear68°F44°F43%1025.7 hPa
New Bedford, New Bedford Regional Airport, MA13 mi70 minN 410.00 miFair68°F46°F47%1025.5 hPa
Providence, Theodore Francis Green State Airport, RI14 mi72 minVar 510.00 miA Few Clouds68°F42°F39%1026 hPa
Taunton, Taunton Municipal Airport, MA21 mi71 minE 510.00 miFair69°F46°F44%1025.7 hPa
Pawtucket, North Central State Airport, RI22 mi67 minNNW 410.00 miFair65°F42°F43%1020.8 hPa

Link to 5 minute data for KUUU

Wind History from UUU (wind in knots)
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Last 24hrN9N9NE11NE7NE5N3N4N3N4N4N5N4N4N4N4N4N7N7N7N7--N8N7N4
1 day agoNE13NE10E5NE5NE5CalmNE5NE4N4N4N6N6NE8NE12
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2 days ago----N4NE3Calm--E3----------CalmCalmCalmN7N8--N10
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G18

Tide / Current Tables for Anthony Point, Sakonnet River, Rhode Island
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Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.


Tide / Current Tables for Westport River Entrance, Massachusetts Current
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Westport River Entrance
Click for Map
Thu -- 12:37 AM EDT     -0.00 knots Slack
Thu -- 03:07 AM EDT     -2.77 knots Max Ebb
Thu -- 06:26 AM EDT     0.00 knots Slack
Thu -- 06:28 AM EDT     Sunrise
Thu -- 10:29 AM EDT     1.72 knots Max Flood
Thu -- 11:32 AM EDT     Moonset
Thu -- 12:56 PM EDT     -0.00 knots Slack
Thu -- 03:29 PM EDT     -2.77 knots Max Ebb
Thu -- 06:45 PM EDT     0.00 knots Slack
Thu -- 06:47 PM EDT     Sunset
Thu -- 09:50 PM EDT     Moonrise
Thu -- 10:53 PM EDT     1.74 knots Max Flood
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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0.9-0.6-2.1-2.8-2.4-1.4-0.40.41.11.51.71.71.1-0.1-1.6-2.6-2.6-1.8-0.70.20.91.41.61.7

Weather Map
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GEOS 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 (16,3,4,5)
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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.