Thursday, August13, 2020
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Marine Weather and Tides
Providence, RI

Version 3.4
NOTICE
12/16/2019 NOAA is having trouble with requests that include wind gusts. I am posting graphs without wind gusts until it gets fixed.
10/9/2019 Updated the Marine Zones.
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.

Sunrise 5:51AMSunset 7:49PM Thursday August 13, 2020 4:59 AM EDT (08:59 UTC) Moonrise 12:27AMMoonset 3:33PM Illumination 30% Phase: Waning Crescent; Moon at 24 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- 416 Am Edt Thu Aug 13 2020
Today..N winds around 5 kt, becoming S this afternoon. Waves around 2 ft. Isolated showers. Isolated tstms this afternoon.
Tonight..SE winds around 5 kt, becoming ne after midnight. Waves 1 foot or less.
Fri..E winds 5 to 10 kt. Waves 1 foot or less.
Fri night..NE winds 5 to 10 kt. Gusts up to 20 kt after midnight. Waves around 2 ft.
Sat and Sat night..NE winds 10 to 15 kt with gusts up to 30 kt. Waves 2 to 3 ft.
Sun through Mon night..NW winds 10 to 15 kt with gusts up to 25 kt. Waves 2 to 4 ft. A chance of showers. 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 416 Am Edt Thu Aug 13 2020
Synopsis for massachusetts and rhode island coastal waters.. A cold front will stall around or just south of the southern coastal waters through Friday. High pressure over the canadian maritimes dominates the weather this weekend into early next week. 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 Providence, RI
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location: 41.81, -71.4     debug


Area Discussion for - Boston, MA
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FXUS61 KBOX 130805 AFDBOX

Area Forecast Discussion National Weather Service Boston/Norton MA 405 AM EDT Thu Aug 13 2020

SYNOPSIS.

It will remain quite warm today and Friday, but less humid as the frontal boundary pushes south of New England. High pressure building across the Canadian Maritimes will result in cooler temperatures this weekend especially across eastern New England. Low pressure may bring a period of showers sometime Sunday into Monday if it tracks far enough north. Regardless, expect mainly dry and seasonably warm afternoons Tuesday and Wednesday.

NEAR TERM /UNTIL 6 PM THIS EVENING/.

Today's weather will be quite similar to Wednesday, with chance of showers along the south coast thanks to the stalled front in the vicinity and cooler temperatures areawide. Highs should generally top out in the 80s. With surface high pressure moving east of our area on Thursday, winds will be from the north in the interior and the northeast in Eastern MA and RI. With weak onshore flow and 850mb temperatures between +14 to +16C , good mixing up to 850mb means that highs will top out in the mid 80s to low 90s for many locales away from the immediate coast. Also, expect a deck of high clouds to infiltrate the region thanks to vorticity energy working around the Bermuda ridge. This will put us just above climatological average, which is the low 80s for mid August.

Rainfall wise, the NAM Nest has the placement of precipitation furthest north because it has the stalled front further north over the south coast. However, it is the outlier out of the CAM members. A potential red flag is 00z HREF showing zero probability of 4 hour max updraft exceeding 20 m/s. Nonetheless, there could be isolated showers and low-top thunderstorms generally south of the I-95 corridor in RI and Eastern MA. Deterministic guidance is pretty consistent in showing over 70 percent mid-level RH and low-level RH in this area. Very weak wind field aloft means little steering flow for any storms that develop so the main threat would be heavy downpours producing localized minor flooding.

SHORT TERM /6 PM THIS EVENING THROUGH 6 PM FRIDAY/.

Tonight:

With surface high to our north, expect a night of quiet weather with comfortable dew points away from the immediate coast. Expect lows in the low to mid 60s, with the exception of upper 50s in the high terrain except for upper 60s to low 70s in the urban centers and coastal areas. And like previous nights, patchy fog is possible especially over southeast MA including Cape Cod and the islands. However, expect fog and low stratus coverage to be less extensive thanks to subsidence and predominant northerly flow.

Friday:

Friday looks to be a tad cooler than Thursday with 850mb temperatures falling to +14C. With an inverted 500mb trough extending into New England and an increasing baroclinic gradient, expect northeast flow to increase across our area. Temperatures wise, expect highs over Eastern MA and RI to top out in the upper 70s to low 80s while interior MA and CT top out in the mid 80s thanks to downsloping effect. Moreover, the differential terrain heating will result in better chances of isolated showers and thunderstorms towards the Berkshires East Slopes and the CT River valley. Otherwise, expect a mostly dry and seasonable day with a welcome break from the recent oppressive heat and humidity. Enjoy!

LONG TERM /FRIDAY NIGHT THROUGH WEDNESDAY/.

Highlights .

* Cooler this weekend especially across eastern New England

* Best chance for a period of showers will be sometime Sun into Mon if low pressure tracks far enough north

* Mainly dry and seasonably warm afternoons next Tue into Wed

Details .

Saturday .

Surface high pressure building over the Canadian Maritimes will combined with a distant offshore low pressure system. The result will be a modest northeast breeze and cooler temperatures than what we have recently experienced. Highs mainly in the 70s to the lower 80s; with coolest temps along the coast and mildest readings in the CT River Valley.

Northeast low level flow and some northern stream shortwave energy may generate a few brief spot showers Saturday, especially near the coast but dry weather should dominate. The 00z NAM is an outlier indicating a soaking rain across eastern MA/RI with low pressure much closer to the coast. We feel this is a fairly low probability at this point and this solution does not have support from the EPS/GEFS Ensembles.

Sunday and Monday .

High pressure moves east of the Canadian Maritimes as low pressure approaches from the southwest. There are some significant model differences in the track of this low pressure system. The GFS/CMC and many of its ensembles indicate a further north track, bringing a period of widespread showers to the region sometime Sun afternoon into Mon. Meanwhile, the ECMWF/UKMET keep the low far enough south where mainly dry weather will prevail with just a few brief spot showers. It is still too early to determine the outcome, so we will need to await further model runs and trends over the next day or two.

Temperatures Sun and Mon will be determined by what we discussed in the previous paragraph. Thinking highs on Sunday will mainly be in the 70s with onshore flow. Temps on Monday a bit more uncertain and clouds/wind direction will determine if highs are mainly in the 70s or reach into the lower to middle 80s with more sunshine.

Tuesday and Wednesday .

Overall, limited forcing should result in dry weather dominating with seasonably warm afternoon temperatures.

AVIATION /08Z THURSDAY THROUGH MONDAY/. Forecaster Confidence Levels .

Low - less than 30 percent. Moderate - 30 to 60 percent. High - greater than 60 percent.

0730Z TAF Update:

Rest of tonight: High confidence.

Mostly VFR except for MVFR in areas where isolated showers or patchy fog develop. IFR to LIFR conditions on the Cape and Island terminals but expect quick improvement to VFR after sunrise. Light WNW winds except SSW along the south coast.

Today: High confidence

Light NNE winds with local seabreezes. Any pre-dawn IFR/LIFR conditions along the south coast improve to VFR shortly after sunrise. Slight chance of isolated showers and thunderstorm near the south coast in the afternoon. Otherwise VFR and mainly dry weather.

Tonight: High confidence.

Mostly VFR conditions with light and variable winds.

Friday: High confidence.

VFR conditions with slight chance of showers and isolated thunderstorms in Western MA and CT. NE winds at 5 to 10 kt.

KBOS Terminal . High confidence in TAF.

KBDL Terminal . High confidence in TAF.

Outlook /Friday Night through Monday/ .

Friday Night: VFR. Breezy.

Saturday: Mainly VFR, with areas MVFR possible. Windy with local gusts up to 30 kt. Slight chance SHRA.

Saturday Night: VFR. Breezy.

Sunday: Mainly MVFR, with local IFR possible. Breezy. Chance SHRA.

Sunday Night: Mainly MVFR, with areas IFR possible. Breezy. Chance SHRA.

Monday: Mainly MVFR, with areas VFR possible. Breezy. Chance SHRA.

MARINE.

Winds and seas remain below Small Craft Advisory criteria through Friday. A stalled front may bring showers and an isolated thunderstorm this afternoon.

Outlook /Friday Night through Monday/ .

Friday Night: Winds less than 25 kt. Seas locally approaching 5 ft. Slight chance of rain showers.

Saturday: Moderate risk for Small Craft Advisory winds with gusts up to 30 kt. Seas up to 5 ft. Slight chance of rain showers.

Saturday Night: Low risk for Small Craft Advisory winds with gusts up to 25 kt. Areas of rough seas.

Sunday: Low risk for Small Craft Advisory winds with gusts up to 25 kt. Seas up to 5 ft. Chance of rain showers.

Sunday Night: Winds less than 25 kt. Seas up to 5 ft. Chance of rain showers.

Monday: Winds less than 25 kt. Areas of rough seas. Chance of rain showers.

BOX WATCHES/WARNINGS/ADVISORIES. CT . None. MA . None. RI . None. MARINE . None.

SYNOPSIS . Chai/Frank NEAR TERM . Chai SHORT TERM . Chai LONG TERM . Frank AVIATION . Chai/Frank MARINE . Chai/Frank


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
FOXR1 - 8454000 - Providence, RI 0 mi65 min NE 6 G 7 79°F 79°F1018.3 hPa
PVDR1 2 mi65 min NNW 2.9 G 6 79°F 1018.3 hPa64°F
CPTR1 - 8452944 - Conimicut Light, RI 7 mi65 min 77°F 80°F1018 hPa
NAXR1 - Narragansett Bay Reserve, RI 12 mi74 min NE 4.1 73°F 1018 hPa73°F
PTCR1 - 8452951 - Potter Cove, Prudence Island, RI 12 mi65 min NE 4.1 G 6 74°F 1018.6 hPa
BLTM3 - 8447387 - Borden Flats Light at Fall River, MA 14 mi65 min N 2.9 G 4.1 76°F 1018.1 hPa
FRVM3 - 8447386 - Fall River, MA 14 mi65 min 78°F 80°F1018.3 hPa
FRXM3 14 mi65 min 77°F 71°F
PRUR1 15 mi65 min 74°F 74°F
QPTR1 - 8454049 - Quonset Point, RI 15 mi65 min NNW 4.1 G 5.1 76°F 78°F1018.1 hPa
NWPR1 - 8452660 - Newport, RI 22 mi65 min SSW 2.9 G 2.9 75°F 71°F1018 hPa
BUZM3 - Buzzards Bay, MA 35 mi59 min WSW 8 G 8.9 1018.7 hPa (+0.0)
BHBM3 - 8443970 - Boston, MA 42 mi65 min 78°F 63°F1017.3 hPa
BZBM3 - 8447930 - Woods Hole, MA 43 mi65 min 75°F 77°F1017.9 hPa
NLNC3 - 8461490 - New London, CT 48 mi65 min W 1.9 G 1.9 77°F 76°F1017.9 hPa
WAXM3 - Waquoit Bay Reserve, MA 49 mi74 min W 1 76°F 1018 hPa76°F

Wind History for Providence, RI
(wind in knots)    EDIT      (on/off)   Help
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Providence, Theodore Francis Green State Airport, RI6 mi68 minN 510.00 miA Few Clouds77°F64°F66%1018 hPa
Pawtucket, North Central State Airport, RI7 mi63 minNNE 610.00 miMostly Cloudy74°F64°F71%1013.2 hPa
Newport, Newport State Airport, RI20 mi66 minN 01.25 miFog/Mist76°F73°F94%1017.7 hPa
Taunton, Taunton Municipal Airport, MA21 mi67 minN 07.00 miOvercast73°F70°F90%1017.7 hPa
New Bedford, New Bedford Regional Airport, MA24 mi66 minN 04.00 miFog/Mist75°F73°F94%1017.4 hPa

Link to 5 minute data for KPVD

Wind History from PVD (wind in knots)
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Last 24hrSW8SW7SW4W6W86W3NW4S6S15S12
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SE12S8S12SW12SW8SW4SW4S4SW3W3W4N5N5
1 day agoS4S4S4S5S4SE6SE7S11SE14S12
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SW15SW11S8SW8SW8S6S9S7S7SW8SW7
2 days agoSW3S33SW34W45S10S11S11S11SW15SW14SW16
G21
SW10SW8SW7SW5SW5SW5S6S6S5SW5

Tide / Current Tables for Providence, State Pier no.1, Narragansett Bay, 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 Nayatt Point, Narragansett Bay, Rhode Island
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Nayatt Point
Click for Map
Thu -- 12:26 AM EDT     Moonrise
Thu -- 03:43 AM EDT     3.66 feet High Tide
Thu -- 05:52 AM EDT     Sunrise
Thu -- 08:26 AM EDT     1.01 feet Low Tide
Thu -- 03:32 PM EDT     Moonset
Thu -- 04:14 PM EDT     4.62 feet High Tide
Thu -- 07:47 PM EDT     Sunset
Thu -- 09:36 PM EDT     1.28 feet Low Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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2.22.63.13.63.63.22.41.51.11.11.41.82.32.93.64.24.64.43.72.71.81.31.31.5

Weather Map
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wmap_A
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.
Link to Loop

Other links: Northern Pacific     Contential US     Full GOES-East
Wind Forecast for Boston, MA (4,6,7,8)
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Ground Weather Radar Station Boston, MA
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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 numerous 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.