Saturday, May25, 2019 L-36.com


Marine Weather and Tides
Narragansett Pier, RI

Version 3.4
What's New / NOTES
10/6/2018 Colors of tide XTide graphs changed to emphasize that they were upgraded. See next note. Comments welcome.
10/4/2018 I have fixed XTide and updated the harmonic files. There were some name changes so you might have to click EDIT to find the new station name.

Sunrise 5:16AMSunset 8:08PM Saturday May 25, 2019 7:33 AM EDT (11:33 UTC) Moonrise 1:06AMMoonset 11:16AM Illumination 61% Phase: Waning Gibbous; Moon at 21 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- 716 Am Edt Sat May 25 2019
Today..W winds around 5 kt, becoming sw with gusts up to 20 kt this afternoon. Waves around 2 ft.
Tonight..SW winds 10 to 15 kt with gusts up to 20 kt. Waves 2 to 3 ft. Showers.
Sun..SW winds 10 to 15 kt with gusts up to 20 kt. Waves 2 to 3 ft. Patchy fog. A chance of showers. Vsby 1 to 3 nm.
Sun night..NW winds 5 to 10 kt. Waves 2 to 3 ft.
Mon..N winds 5 to 10 kt, becoming E in the afternoon. Waves around 2 ft.
Mon night..SE winds around 5 kt. Waves 1 foot or less.
Tue..SE winds 10 to 15 kt with gusts up to 20 kt. Waves 1 foot or less. A chance of showers.
Tue night..S winds 5 to 10 kt with gusts up to 20 kt. Waves 1 foot or less. Showers likely with a chance of tstms.
Wed..SW winds 5 to 10 kt. Waves around 2 ft. A chance of showers and tstms.
Wed night..S winds around 10 kt. Waves around 2 ft. A chance of showers and tstms. Winds and waves higher in and near tstms. 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 716 Am Edt Sat May 25 2019
Synopsis for massachusetts and rhode island coastal waters.. High pres builds over the waters today. A weak warm front moves into the waters late tonight followed by a cold front Sun evening. High pres builds across on Mon, with another system approaching Tue. 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 Narragansett Pier, RI
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location: 41.44, -71.43     debug


Area Discussion for - Boston, MA
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Fxus61 kbox 250852
afdbox
area forecast discussion
national weather service boston norton ma
452 am edt Sat may 25 2019

Synopsis
High pressure in control today with seasonably warm conditions.

A fast moving disturbance will bring a period of showers and
perhaps a few embedded thunderstorms tonight. Mild and dry
conditions expected during the latter portion of the holiday
weekend. High pressure pushes off the coast early Tuesday. Low
pressure then lifts northwest of new england, allowing frontal
systems to move across the region late Tuesday through Wednesday
bringing showers and scattered thunderstorms. Unsettled
conditions linger into Thursday with warm temperatures. A cold
front pushes offshore late next week, with drying conditions and
mild temperatures.

Near term until 6 pm this evening
High pres in control today as it shifts south of new eng with sw
flow developing. Expect lots of sunshine today, although some
increase in mid high clouds during the afternoon ahead of next
shortwave. Highs should reach well into the mid 70s with light
winds for most locations, but developing sea breezes will hold
temps in the upper 60s along the immediate coast.

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

a fast moving shortwave from the gt lakes will pass to the north
late tonight. Models all indicate a developing low level jet
tonight which will bring a decent instability burst as low
level theta-e ridge and increasing ki moves into the region.

Expect a period of showers developing from west to east late
evening into the overnight. A few t-storms are possible as well
as soundings indicate a conditionally unstable profile above the
inversion with marginal mucapes. Gusty SW winds will develop as
the low level jet moves into the region. Gusts 20-30 mph are
possible.

Sunday...

shower activity will be exiting SE new eng in the morning, with
areas of low clouds giving way to increasing sunshine as good
low and mid level drying develops. Clouds may linger over the
cape islands through midday. It will be a warm day with
westerly winds and 850 mb temps 20-21c supporting highs into
the mid 80s with some upper 80s possible ct and merrimack
valleys. Cooler 70s along the immediate south coast where winds
turn sw. Weak cold front moves into sne in the afternoon and
models generating sbcapes 500-1000 j kg. Limiting factor for
convection is the very dry air which moves in above 700 mb which
will limit any potential updrafts. Mainly dry weather in the
afternoon with just a low risk for a brief shower or perhaps a
low topped t-storm but coverage would be localized. Steep low
level lapse rates develop in the afternoon with deep mixed layer
supporting gusty west winds to 20-30 mph at times, especially
interior locations.

Long term Sunday night through Friday
Highlights...

* dry and mild conditions Sunday night and memorial day
* turning cooler Tuesday as low pressure shifts across,
bringing showers and scattered thunderstorms
* a front lingers across the region Wed and Thu with unsettled
conditions and mild temperatures
* could see dry and seasonable conditions toward the end of the
work week
overview...

fast moving northern stream systems continue as a low amplitude
mid level steering flow remains in place, keeping weather
systems moving across the region. Broad subtropical ridge
lingers across the central and southern tier, so the storm track
will allow weather systems to push across the region. Noting
widening model solution spread thanks to timing and track issues
of individual systems lending to lowering confidence through
next week.

Should see showery periods as each system passes. Instability
increases from Tuesday night through Thursday as one system
moves out, followed quickly by a second, potentially more
potent systems. At this point, looks like best shot for showers
and thunderstorms that may occur around mid to late next week.

May see the mildest temps of the week around Thursday, which
could help kick up the convection a bit higher. May see dry and
seasonal conditions late next week, but will depend upon the
exit of the low pres cold front Thu night as well as ridge
building east.

Details...

Sunday night and memorial day...

the cold front should push offshore Sunday evening, allowing
winds to shift to w-nw that will bring drier conditions. Expect
overnight lows to range from the lower 50s across the higher
terrain to around 60 across the coastal plain with light w-nw
winds in place.

High pressure builds across the northeast on memorial day with
mostly sunny skies for most areas. Expect temps to run close to
or a bit above normal, topping off in the mid-upper 70s inland,
but will be cooler along the coast and especially across outer
cape cod with light e-ne winds in place.

Monday night through Thursday...

another warm front approaches as low pressure pushes across the
eastern great lakes and along the us canadian border, will see
another round of showers move in late Monday night into Tuesday.

Models trying to briefly dry things out, but increasingly wide
timing of systems lends to lower confidence. With the fast flow
aloft, could see precip from the next system approach as well.

Have kept chc to lkly pops going for this particular system.

Increasing instability ahead of warm front Tue night may also
mean some convection kicking off, with slis from zero to -2, k
indices in the lower 30s and tq values in the upper teens. Have
mentioned thunder in the forecast for Tue night and wed.

Expect milder temperatures Wed and especially Thu as the warm
front lingers across the interior or possibly further n, with
the low amplitude pattern in place, steering track will keep w-e
moving systems moving along.

Should see next system approach Wed night into thu, bringing
another batch of showers and scattered thunderstorms.

Forecasting the mildest temps of the week late Wed or Thu as h85
temps rise to +16c to +18c crossing southern areas around
midday or during the afternoon on thu. This will also keep
increased instability moving across as well.

May see highs on Thu top off in the upper 70s to lower 80 at
most locations, but may be cooler across the higher terrain and
along the immediate S coast, CAPE cod and the islands on s-sw
winds.

Thursday night and Friday...

timing of the approaching cold front in question due to timing
and track issues Thu night, but should pass across overnight thu
night into early Fri morning as cooler air moves in behind the
front. Might some some lingering showers during the day on
Friday across eastern areas as temps rise to the mid and upper
70s, except 65 to 70 across outer CAPE cod and the islands, and
near 70 across the higher terrain.

Aviation 09z 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 ...

today... High confidence.VFR. Coastal sea breezes developing by
afternoon.

Tonight... Moderate confidence.VFR in the evening, then a period
of showers and possibly a t-storm move through the region with
conditions lowering to MVFR after the showers begin. Localized
ifr CIGS possible. Patchy fog developing along the south coast
late. SW gusts to 20-25 kt developing.

Sunday... High confidence in trends, lower confidence in timing.

MVFR ifr early with showers ending SE new eng. Then rapidly
improving toVFR during the morning, but lower CIGS may linger
into the early afternoon over CAPE islands. Low risk of an isold
shower t-storm in the afternoon. West gusts to 20-25 kt.

Kbos terminal... High confidence in taf. Expect sea breeze to
develop by 16z.

Kbdl terminal... High confidence in taf.

Outlook...

Sunday night through memorial day:VFR.

Monday night: mainlyVFR, with local MVFR possible.

Tuesday: mainlyVFR, with local MVFR possible. Breezy. Chance
shra.

Tuesday night: mainly MVFR, with local ifr possible. Breezy.

Chance shra, isolated tsra.

Wednesday: mainly MVFR, with local ifr possible. Breezy. Chance
shra, chance tsra.

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 winds becoming onshore over nearshore waters as
sea breezes develop around midday.

Tonight... Increasing SW winds as low level jet moves across the
waters. Gusts to 25 kt possible after midnight with building
seas and SCA may eventually be needed for some of the waters.

Showers move through late evening into the overnight with
reduced vsbys.

Sunday... Low level jet exits SE waters early with diminishing
winds. Another pulse of west gusts to 20-25 kt may develop in
the afternoon over boston harbor and narragansett bay. Patchy
fog may reduce vsbys in the morning with showers exiting se
waters.

Outlook...

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

Memorial day: winds less than 25 kt. Seas locally approaching
5 ft.

Monday night: winds less than 25 kt.

Tuesday: winds less than 25 kt. Rain showers likely.

Tuesday night: winds less than 25 kt. Areas of seas approaching
5 ft. Rain showers likely.

Wednesday: winds less than 25 kt. Areas of seas approaching
5 ft. Chance of rain showers, chance of thunderstorms.

Box watches warnings advisories
Ct... None.

Ma... None.

Ri... None.

Marine... None.

Synopsis... Kjc evt
near term... Kjc
short term... Kjc
long term... Evt
aviation... Kjc evt
marine... Kjc evt


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
NWPR1 - 8452660 - Newport, RI 7 mi40 min Calm G 1.9 56°F 51°F1022.6 hPa
QPTR1 - 8454049 - Quonset Point, RI 10 mi40 min WSW 1.9 G 2.9 54°F 57°F1022.8 hPa
PRUR1 13 mi34 min 56°F 48°F
NAXR1 - Narragansett Bay Reserve, RI 14 mi49 min WNW 1 53°F 1023 hPa52°F
PTCR1 - 8452951 - Potter Cove, Prudence Island, RI 14 mi34 min NW 2.9 G 4.1 55°F 1023.2 hPa
CPTR1 - 8452944 - Conimicut Light, RI 20 mi34 min W 2.9 G 2.9 51°F 59°F1022.9 hPa (+1.4)
FRXM3 22 mi40 min 54°F 51°F
BLTM3 - 8447387 - Borden Flats Light at Fall River, MA 23 mi34 min WSW 2.9 G 2.9 53°F 1022.5 hPa (+1.2)
FRVM3 - 8447386 - Fall River, MA 23 mi34 min 53°F 58°F1022.8 hPa (+1.2)
FOXR1 - 8454000 - Providence, RI 25 mi34 min NW 7 G 8 55°F 57°F1022.2 hPa (+1.2)
NLNC3 - 8461490 - New London, CT 35 mi34 min ENE 2.9 G 4.1
44097 - Block Island, RI (154) 36 mi34 min 53°F2 ft
LDLC3 - New London Ledge CT - Ledge Light Weather 36 mi24 min NW 2.9 G 4.1 56°F 1023.2 hPa49°F
MTKN6 - 8510560 - Montauk, NY 39 mi34 min 53°F 54°F1023 hPa (+1.1)
BZBM3 - 8447930 - Woods Hole, MA 41 mi34 min 56°F 57°F1022.3 hPa (+1.7)
WAXM3 - Waquoit Bay Reserve, MA 49 mi49 min NW 1.9 56°F 1022 hPa55°F

Wind History for Newport, RI
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Newport, Newport State Airport, RI11 mi41 minN 010.00 miFair53°F48°F86%1022.3 hPa
Block Island State Airport, RI20 mi38 minWNW 510.00 miFair54°F50°F87%1023.6 hPa
Providence, Theodore Francis Green State Airport, RI20 mi43 minW 410.00 miFair53°F48°F83%1022.6 hPa
Westerly, Westerly State Airport, RI21 mi41 minN 010.00 miFair55°F52°F90%1023.1 hPa

Wind History from UUU (wind in knots)
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NE12NE9NE7NE4CalmCalmCalmCalmCalmCalmCalm
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Tide / Current Tables for Narragansett Pier, Narragansett Bay, Rhode Island
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Narragansett Pier
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Sat -- 12:56 AM EDT     2.95 feet High Tide
Sat -- 01:06 AM EDT     Moonrise
Sat -- 05:18 AM EDT     Sunrise
Sat -- 06:45 AM EDT     0.62 feet Low Tide
Sat -- 11:16 AM EDT     Moonset
Sat -- 01:32 PM EDT     2.70 feet High Tide
Sat -- 06:55 PM EDT     0.86 feet Low Tide
Sat -- 08:07 PM EDT     Sunset
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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2.832.72.21.510.70.60.811.31.72.32.62.72.31.81.310.911.21.41.8

Tide / Current Tables for Westport River Entrance, Massachusetts Current
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Westport River Entrance
Click for Map
Sat -- 01:04 AM EDT     Moonrise
Sat -- 02:01 AM EDT     -0.00 knots Slack
Sat -- 04:25 AM EDT     -2.31 knots Max Ebb
Sat -- 05:17 AM EDT     Sunrise
Sat -- 08:29 AM EDT     0.00 knots Slack
Sat -- 11:14 AM EDT     Moonset
Sat -- 12:21 PM EDT     2.17 knots Max Flood
Sat -- 02:39 PM EDT     -0.01 knots Slack
Sat -- 05:00 PM EDT     -2.20 knots Max Ebb
Sat -- 08:05 PM EDT     Sunset
Sat -- 09:29 PM EDT     0.00 knots Slack
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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1.81.30-1.4-2.2-2.2-1.6-1-0.30.311.72.121-0.5-1.8-2.2-1.9-1.4-0.8-0.30.31

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 (7,2,3,4)
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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.