Thursday, August24, 2017 L-36.com


Marine Weather and Tides
Melville, RI

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 6:03AMSunset 7:32PM Thursday August 24, 2017 6:38 AM EDT (10:38 UTC) Moonrise 9:02AMMoonset 9:21PM Illumination 5% Phase: Waxing Crescent; Moon at 2 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- 328 Am Edt Thu Aug 24 2017
Today..NW winds around 5 kt, becoming sw around 5 kt this afternoon. Waves around 2 ft.
Tonight..W winds around 5 kt, becoming N after midnight. Waves around 2 ft.
Fri..N winds around 5 kt, becoming W in the afternoon. Waves around 2 ft.
Fri night..NW winds 5 to 10 kt. Waves 1 foot or less.
Sat..N winds 5 to 10 kt, becoming se in the afternoon. Waves 1 foot or less.
Sat night..SE winds around 5 kt, becoming W after midnight. Waves 1 foot or less.
Sun..NE winds 5 to 10 kt. Waves 1 foot or less.
Sun night..NE winds 5 to 10 kt. Waves 1 foot or less.
Mon..NE winds 10 to 15 kt. Waves around 2 ft.
Mon night..NE winds 5 to 10 kt. Waves 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 328 Am Edt Thu Aug 24 2017
Synopsis for massachusetts and rhode island coastal waters.. Large high pres will then build in from the west today and remain in control right through Monday resulting in quiet weather. 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 Melville CDP, RI
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location: 41.58, -71.44     debug


Area Discussion for - Boston, MA
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Fxus61 kbox 240736
afdbox
area forecast discussion
national weather service taunton ma
336 am edt Thu aug 24 2017

Synopsis
High pressure will build over the region today and remain in
control of our weather through early next week. This will result
in dry weather with cool nights and mild days.

Near term through today
Very localized patchy ground fog in the typically prone spots will
quickly burn off after sunrise. Otherwise, large high pressure
building over the great lakes will result in a beautiful day.

Plenty of sunshine and a relatively dry airmass in place will
allow afternoon high temperatures to recover into the upper 70s
to lower 80s. Wind gusts will generally be less than 15 mph with
very comfortable humidity levels.

Short term tonight through 6 pm Friday
Tonight and Friday...

a shortwave trough cold front will cross the region late
tonight into Friday morning. Given the fact the the shortwave
is moisture starved, opted to go with a dry forecast. Low risk
for a brief spot shower or two on Friday, but felt the potential
was too low to include in the forecast.

Light wind and the dry airmass in place should allow for another
cool night. Low temps tonight should fall into the 50s in most
locales despite some mid level cloudiness possible. May also
see some very localized patchy ground fog in the typical spots
late, but nothing widespread. 850t drop to between +7 and +8c on
Friday, so expect highs to only reach the mid to upper 70s
despite at least partly sunny skies. Low relative humidity for
august standards will once again make for a comfortable
afternoon.

Long term Friday night through Wednesday
* highlights...

- mostly dry with temperatures slightly below-average
- monitoring the evolution of tropical energy around fl
* discussion...

forecast models struggle into midweek with a lot of moving parts. In
one region, the continuance of pacific-origin impulses round an area
of low pressure over the gulf of alaska nets a progressive evolution
of downstream ridging via influx of milder pacific air, maintaining
somewhat of a monsoonal high over the SW CONUS while shearing energy
s behind which cooler, drier air follow over the great lakes region
into the NE conus. Yet, another region, during a transitional period
of the progressive evolution noted above, remnant energy over the n-
central CONUS becomes cut-off, wobbling S with the mean wind round
the aforementioned monsoonal high. Neighboring up against harvey and
tropical energy round florida, synoptics become complicated towards
midweek as to whether we see s-stream energy pulled N over our area.

Low confidence forecast beginning 12z Monday. Earlier forecasts had
a broad picture of persisting subsidence and surface high pressure
keeping the moist-tropical axis S E of our region. Now it appears
that forecast models struggle with the morphology of the cut-
off low with the tropical energy off of florida, keeping harvey
over S tx within weak steering flow, out of the picture for the
time-being. A lot of spread within the ensemble members while
the 24.0z canadian looks like an outlier for the time being.

A cool, dry forecast out through Monday at the very least. Low dew-
points making for comfortable conditions along with temperatures
ranging around the 70s, slightly below-average for late august. A
mostly dry forecast with a low risk of a spot shower given steep
lapse rates per cold pool aloft coupled with ascent as mid-level
energy rotates round the broader cyclonic flow. Best chance Saturday
mainly N W of our region up against high terrain. NW winds becoming
ne. The remainder of the forecast is a consensus blend, mainly a
compromise between the operational 24.0z GFS and ec. This keeps
tropical energy S E of our region with main influences of wind and
swell, a dry forecast through next Friday given a wedge of high
pressure keeping tropical activity at bay. Again, low confidence.

Aviation 07z 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 ...

today through Friday... High confidence.VFR conditions other
than some very localized patchy ground fog in the typically
prone spots during the late night early morning hours.

Kbos terminal... High confidence in taf. Sea breeze probably
develops but not until mid-late afternoon.

Kbdl terminal... High confidence in taf.

Outlook Friday night through Monday ... Moderate confidence.

Will keep itVFR. Daytime sct low-endVFR CIGS 4-5 kft agl. N w
winds initially, light, allowing sea-breezes Saturday, becoming ne
and increasing Sunday through Tuesday with gusts up to 20 kts late.

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 through Friday... Winds and seas will remain below small
craft advisory thresholds through Friday. A secondary cold front
will probably bring a period of northerly wind gusts of 15 to
20 knots late tonight into Friday morning, but not expecting
them to reach small craft levels.

Outlook Friday night through Monday ... Moderate confidence.

High pressure wanes over the period as a tropical low develops off
the SE coasts lifting ne, sweeping offshore of new england. Will see
nw winds shift NE and increase with gusts up to 20 kts into Tuesday
as seas potentially building 5 to 7 feet on the S SE waters.

Box watches warnings advisories
Ct... None.

Ma... None.

Ri... None.

Marine... None.

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


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
QPTR1 - 8454049 - Quonset Point, RI 2 mi56 min WNW 4.1 G 5.1 63°F 72°F1012.1 hPa
PRUR1 7 mi50 min 62°F 57°F
NAXR1 - Narragansett Bay Reserve, RI 7 mi113 min Calm 58°F 1012 hPa57°F
PTCR1 - 8452951 - Potter Cove, Prudence Island, RI 7 mi56 min NNE 1 G 1.9 63°F 1012.1 hPa
NWPR1 - 8452660 - Newport, RI 8 mi50 min NNW 4.1 G 4.1 67°F 67°F1011.9 hPa
CPTR1 - 8452944 - Conimicut Light, RI 11 mi56 min W 4.1 G 5.1 62°F 74°F1011.9 hPa
PVDR1 15 mi50 min NW 4.1 G 5.1 61°F 1011.8 hPa53°F
FRXM3 16 mi50 min 62°F 57°F
FOXR1 - 8454000 - Providence, RI 16 mi50 min N 2.9 G 5.1 64°F 73°F1011.8 hPa
BLTM3 - 8447387 - Borden Flats Light at Fall River, MA 16 mi50 min WNW 2.9 G 4.1 66°F 1011.3 hPa
FRVM3 - 8447386 - Fall River, MA 17 mi56 min 65°F 76°F1012.7 hPa
BUZM3 - Buzzards Bay, MA 25 mi38 min N 7 G 8 67°F 1012.4 hPa (+1.0)
NLNC3 - 8461490 - New London, CT 38 mi50 min N 2.9 G 4.1 60°F 72°F1012.1 hPa
BZBM3 - 8447930 - Woods Hole, MA 41 mi50 min 68°F 72°F1011.8 hPa
MTKN6 - 8510560 - Montauk, NY 46 mi50 min 65°F 72°F1012.4 hPa
WAXM3 - Waquoit Bay Reserve, MA 48 mi113 min 1 61°F 1012 hPa60°F

Wind History for Quonset Point, RI
(wind in knots)    EDIT      (on/off)   Help
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Newport, Newport State Airport, RI9 mi45 minN 010.00 miFair57°F55°F96%1012 hPa
Providence, Theodore Francis Green State Airport, RI10 mi47 minW 310.00 miA Few Clouds59°F55°F87%1012.3 hPa

Wind History from OQU (wind in knots)
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Last 24hr----------------W8W8NW8NW8NW6NW8NW8W8NW8NW15NW14NW12NW4NW4NW6NW5
1 day ago----------------SW8SW10SW10SW10SW14SW14SW14SW15SW13SW18SW18SW20SW15
G23
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G23
2 days ago------------------------------------------------

Tide / Current Tables for Wickford, Narragansett Bay, Rhode Island
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Wickford
Click for Map
Thu -- 03:33 AM EDT     -0.15 feet Low Tide
Thu -- 06:03 AM EDT     Sunrise
Thu -- 09:01 AM EDT     Moonrise
Thu -- 10:28 AM EDT     4.75 feet High Tide
Thu -- 03:47 PM EDT     -0.05 feet Low Tide
Thu -- 07:31 PM EDT     Sunset
Thu -- 09:20 PM EDT     Moonset
Thu -- 10:49 PM EDT     4.38 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
3.11.70.5-0.1-0.10.20.71.62.83.94.74.63.72.30.90.1-00.20.71.42.33.44.14.4

Tide / Current Tables for Westport River Entrance, Massachusetts Current
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Westport River Entrance
Click for Map
Thu -- 01:13 AM EDT     -2.75 knots Max Ebb
Thu -- 05:20 AM EDT     0.00 knots Slack
Thu -- 06:02 AM EDT     Sunrise
Thu -- 08:53 AM EDT     2.65 knots Max Flood
Thu -- 09:00 AM EDT     Moonrise
Thu -- 11:15 AM EDT     -0.01 knots Slack
Thu -- 01:41 PM EDT     -2.61 knots Max Ebb
Thu -- 05:51 PM EDT     0.00 knots Slack
Thu -- 07:29 PM EDT     Sunset
Thu -- 09:17 PM EDT     2.37 knots Max Flood
Thu -- 09:19 PM EDT     Moonset
Thu -- 11:32 PM EDT     -0.00 knots Slack
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
-2-2.7-2.5-1.9-1.2-0.30.61.52.32.620.5-1.3-2.4-2.6-2.1-1.5-0.70.111.82.32.10.9

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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weather_mapweather_map weather_map

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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.