Wednesday, April8, 2020
Privacy Policy
L-36.com


Marine Weather and Tides
Tiverton, 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 6:13AMSunset 7:19PM Wednesday April 8, 2020 3:57 AM EDT (07:57 UTC) Moonrise 8:11PMMoonset 6:53AM Illumination 100% Phase: Full Moon; Moon at 15 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
    EDIT      (on/off)   Help
ANZ236 Narragansett Bay- 116 Am Edt Wed Apr 8 2020
Rest of tonight..S winds around 5 kt. Waves around 2 ft. Showers likely.
Wed..NE winds 5 to 10 kt. Waves 1 foot or less. Showers.
Wed night..E winds around 5 kt. Waves around 2 ft.
Thu..S winds 10 to 15 kt, increasing to 15 to 20 kt in the afternoon. Gusts up to 25 kt. Waves 2 to 4 ft. Patchy fog. Showers. Vsby 1 to 3 nm.
Thu night..W winds 15 to 20 kt with gusts up to 25 kt. Waves 2 to 4 ft. A chance of showers.
Fri..W winds 15 to 20 kt with gusts up to 30 kt. Waves 3 to 5 ft.
Fri night..W winds 15 to 20 kt, diminishing to 10 to 15 kt after midnight. Gusts up to 25 kt. Waves 2 to 4 ft.
Sat through Sun..SW winds 10 to 15 kt with gusts up to 20 kt. Waves around 2 ft.
Sun night..S winds 10 to 15 kt with gusts up to 20 kt. Waves 2 to 3 ft. Showers likely. Vsby 1 to 3 nm. 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 116 Am Edt Wed Apr 8 2020
Synopsis for massachusetts and rhode island coastal waters.. Low pressure exits the great lakes and tracks south of new england early Wednesday, then across georges bank and finally out to sea. A strong cold front crosses new eng Thu afternoon. Low pres develops on this front in new england, intensifying as it moves into the gulf of maine Thu night then into the maritimes Fri. High pressure will be centered southeast of the waters for Sat. 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
   Hourly   EDIT   Help
location: 41.63, -71.21     debug


Area Discussion for - Boston, MA
      (on/off)   Help   NOTE: mouseover dotted underlined text for definition
FXUS61 KBOX 080619 AFDBOX

Area Forecast Discussion National Weather Service Boston/Norton MA 219 AM EDT Wed Apr 8 2020

SYNOPSIS. Weak area of low pressure tracking over or just south of New England will spread a period of rain across the region this morning. As the low departs a drying trend develops this afternoon along with a few breaks of sunshine late in the day. Another system moves in Thursday, bringing more rain and scattered thunderstorms. Scattered showers are possible Thursday night through Friday. Drier weather for this weekend before our next wet weather system early next week.

NEAR TERM /UNTIL 6 AM THIS MORNING/.

205 AM update .

Previous forecast verifying nicely with current and upstream observations along with radar and satellite trends. Thus no major changes with this forecast update.

Previous Discussion .

The primary feature of interest for much of the night, however, is a NW to SE oriented and rather well-defined warm front associated with a low pressure area as of early this afternoon near northern Michigan. The low and its related warm front will progress east- southeast through the northern mid-Atlantic region into Southern New England later tonight, with increasing clouds through midnight and rains spreading east-northeastward especially for the overnight hours.

Temperatures look to remain mild enough even across the terrain to stay as rain. However worth noting the thermal contrast through the warm front is fairly robust, and in addition to that, I did notice on SPC's mesoanalysis page a plume of weak mid-level instability (700-500 mb lapse rates ~6-7 C/km) even on the north side of the warm front. Some guidance - most notably the NAM and the RAP - brings a sliver of this weak elevated instability into a part of northern CT into central/southern RI and the south coastal waters overnight tonight (roughly from a South Windsor to Putnam CT to Coventry RI line). Though rain should predominate, I did opt to include some isolated thunder (basically rumbles) along and south of this line. Rains should continue into the Wednesday morning for most. Model guidance QPF off today's 12z guidance was a bit greater than previous runs. Opted for rain totals thru 12z Wednesday from a quarter to third of an inch for southern RI into the Hartford area, then tapering to a tenth to two-tenths of an inch further north and east.

Lows tonight mainly in the mid-upper 30s to the lower-mid 40s.

SHORT TERM /6 AM THIS MORNING THROUGH 6 PM THURSDAY/.

Wednesday:

Weak low pressure and attendant warm frontal-related showers pass south of the coastal waters through the morning hours. As these features pass to our south, likely to see a modest uptick in NE wind speeds into the morning hrs and especially near the eastern MA coast (indicated by the NAM 975 mb winds which tick up to around 25-kt just offshore). Eventually these winds will lighten and shift to easterly moving into the afternoon.

Some gradual improvement with rains coming to an end by late- morning/early afternoon (latest towards Cape Cod and the offshore waters), and skies trending mostly to partly cloudy. So the second half of the day is looking somewhat better than the first half, but with NE to E onshore flow and a shorter period of sun, I opted to keep temperatures on the cooler side of guidance, into the upper 40s to the mid 50s.

Wednesday Night:

Weak shortwave ridging/modest 500 mb height rises, ahead of a strong frontal system to affect our area into Thursday, should allow for dry conditions through the first part of the overnight. Model guidance shows moisture levels starting to rise on SE flow into the second half of the night, with increasing clouds spreading from west to east. In addition, 500 mb height falls then spread into western MA into northern CT into the early morning hrs. PoPs increasing to chance type levels for these locations though most should stay dry. Lows mainly into the upper 30s to mid 40s with modest SE breezes.

LONG TERM /THURSDAY NIGHT THROUGH TUESDAY/.

* Widespread rain Thursday with scattered thunderstorms

* Lighter rain, and high elevation snow possible, on Friday with a few rumbles of thunder also possible

* Potential for minor coastal flooding Wednesday to Friday around high tide across the east and south coasts of MA and RI. See the Tides and Coastal Flooding section below for more details.

* Temperatures running near to below normal through Saturday, then a warm up

Thursday .

This still appears to be the most active weather day during this portion of the forecast. Potent mid level low shifts over northern New England, with a low pressure passing through our region. Almost certainly looking at some rain for much of southern New England, with some wet snow possible across the higher terrain. Drier air rushes in behind the cold front of this system, drying our the forecast into Friday.

As for thunderstorm potential, surface-based instability is not the best. However, mid level lapse rates are better than moist adiabatic with a strong low-level jet from the south. These factors are enough to warrant at least a mention of isolated thunderstorms. Still too early to say if any of these thunderstorms could be severe.

Friday .

Low pressure continues to rotate away from our region. Still in the cyclonic flow, so cannot dismiss the idea of a few showers during the day, rain for most with snow possible across the higher terrain.

Saturday through Sunday .

The weekend looks drier as a ridge of high pressure makes its way east across the Mid Atlantic states. This should mean a warming trend into Sunday.

Monday into Tuesday .

Another low pressure should move across the Great Lakes, leading to another round of showers sometime from Monday afternoon into Tuesday morning. Timing is not yet locked down. Looking warm enough for all rain.

AVIATION /06Z WEDNESDAY THROUGH SUNDAY/. Forecaster Confidence Levels .

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

06z update . high confidence in trends, lower on exact details.

This morning . Rain in MVFR from western MA into CT/RI and southeast MA. VFR elsewhere with light rain. Light and variable winds trending light NE.

This afternoon . trending toward VFR along with drier weather. Light NE wind.

Tonight . VFR in the evening but trending toward MVFR/IFR including patchy fog. Mainly dry weather prevails.

Thursday . strong cold front approaches the region and sweeps thru the area late in the day. Mainly MVFR but IFR possible in hilly terrain. Widespread showers developing west to east thru the day with a fine line of low top showers/thunderstorms possible along and ahead of the front. LLWS likely given magnitude of low level southerly jet. Strong wind shift late in the day with the frontal passage from south to west.

KBOS Terminal . High confidence in the TAF.

KBDL Terminal . High confidence in the TAF.

Outlook /Thursday Night through Sunday/ .

Thursday Night: VFR. Windy with gusts up to 35 kt.

Friday: VFR. Windy with gusts up to 30 kt. Slight chance SHRA.

Friday Night through Saturday: VFR. Breezy.

Saturday Night: VFR.

Sunday: VFR. Slight chance SHRA.

MARINE. Winds and seas should remain below SCA thresholds through Wednesday night.

A warm front will bring a period of steady rains for most of the waters late tonight into Wednesday morning, with an outside/low chance for a rumble or two of thunder across the southern offshore waters overnight. Could see vsbys between 3-5 SM in rains, likely lowest south coastal waters. Winds to become NE on Wed AM, and could briefly reach marginal-SCA gusts with seas 3-4' (near 5' per the SWAN guidance off the NAM) on the eastern MA/Cape Cod waters. Wasn't confident enough on criteria being met to issue an SCA for these waters Wed AM, but may get close.

Winds lighten to under 20 kt and shift east later Wednesday and then SE into Wednesday night. Seas mainly 2-3' Wednesday night, though build to 2-4' by daybreak.

Outlook /Thursday Night through Sunday/ .

Thursday: Moderate risk for Small Craft Advisory winds with gusts up to 30 kt. Areas of rough seas. Chance of rain showers, isolated thunderstorms, patchy fog. Local visibility 1 to 3 nm.

Thursday Night: Low risk for gale force winds with gusts up to 35 kt. Rough seas up to 10 ft.

Friday: Strong winds with gusts up to 30 kt. Rough seas up to 12 ft. Slight chance of rain showers.

Friday Night: Moderate risk for Small Craft Advisory winds with gusts up to 30 kt. Rough seas up to 10 ft.

Saturday: Winds less than 25 kt. Local rough seas.

Saturday Night: Winds less than 25 kt. Seas locally approaching 5 ft.

Sunday: Winds less than 25 kt.

TIDES/COASTAL FLOODING. 418 PM Update:

Astronomical tides are on the rise over the next several days (across multiple tidal cycles) due to the Supermoon. While the overall threat is limited by poor wave action, due to the high astro tides a number of tidal gages are forecast to be near flood stage or into minor flooding categories per Stevens Institute guidance.

Appears the greater potential for minor coastal flooding later tonight into Wednesday should exist for eastern coastal MA and Cape Cod/Nantucket, especially around the period of high tides. By Wednesday night into Thursday, stronger southerly winds ahead of a strong frontal system will raise the coastal flood threat across a larger area to include the South Coast and Narragansett Bay. Coastal Flood Advisories have been posted thru Friday following these general expectations.

BOX WATCHES/WARNINGS/ADVISORIES. CT . None. MA . Coastal Flood Advisory from 8 AM this morning to 8 AM EDT Friday for MAZ019-022. Coastal Flood Advisory from 8 PM this evening to 8 AM EDT Friday for MAZ015-016. Coastal Flood Advisory until 8 AM EDT Friday for MAZ007. RI . Coastal Flood Advisory from 8 PM this evening to 8 AM EDT Friday for RIZ002-004>007. MARINE . Gale Watch from Thursday afternoon through Friday afternoon for ANZ231-232-250-251-254-255.

SYNOPSIS . Belk/Loconto NEAR TERM . Nocera/Loconto SHORT TERM . Nocera/Loconto LONG TERM . Belk AVIATION . Belk/Nocera MARINE . Belk/Loconto TIDES/COASTAL FLOODING .


Weather Reporting Stations
   EDIT       (on/off)   Help   NOTE: Click on distance to see the station location on a map
Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
FRXM3 5 mi64 min 51°F 31°F
BLTM3 - 8447387 - Borden Flats Light at Fall River, MA 5 mi64 min SSW 6 G 7 51°F 1001.7 hPa
PRUR1 5 mi64 min 49°F 35°F
FRVM3 - 8447386 - Fall River, MA 6 mi64 min 51°F 48°F1001.9 hPa
NAXR1 - Narragansett Bay Reserve, RI 7 mi73 min SW 5.1 48°F 1002 hPa37°F
PTCR1 - 8452951 - Potter Cove, Prudence Island, RI 7 mi64 min Calm G 2.9 48°F 1002 hPa
CPTR1 - 8452944 - Conimicut Light, RI 9 mi64 min 48°F 47°F
NWPR1 - 8452660 - Newport, RI 11 mi64 min SSE 2.9 G 4.1 47°F 41°F1001.5 hPa
QPTR1 - 8454049 - Quonset Point, RI 11 mi64 min S 6 G 8 48°F 47°F1001.7 hPa
PVDR1 14 mi64 min SSE 7 G 8 49°F 1001.8 hPa41°F
FOXR1 - 8454000 - Providence, RI 16 mi64 min S 5.1 G 7 49°F 46°F1001.7 hPa
BUZM3 - Buzzards Bay, MA 19 mi58 min SW 7 G 8 1002.6 hPa (-4.1)
BZBM3 - 8447930 - Woods Hole, MA 29 mi64 min 46°F 45°F1002 hPa
WAXM3 - Waquoit Bay Reserve, MA 36 mi73 min Calm 46°F 1003 hPa42°F
44097 - Block Island, RI (154) 46 mi58 min 44°F2 ft
44090 49 mi58 min 44°F

Wind History for Borden Flats Light at Fall River, MA
(wind in knots)    EDIT      (on/off)   Help
4
AM
5
AM
6
AM
7
AM
8
AM
9
AM
10
AM
11
AM
12
PM
1
PM
2
PM
3
PM
4
PM
5
PM
6
PM
7
PM
8
PM
9
PM
10
PM
11
PM
12
AM
1
AM
2
AM
3
AM
Last
24hr
W4
W6
NW2
W7
W6
NW9
G12
W7
G10
W6
G9
W10
SW12
G15
W11
G14
W10
G13
W12
G15
SW14
SW20
S14
G18
SW11
G15
SW10
G13
SW8
SW8
S8
SW6
SW5
SW4
1 day
ago
SW4
--
N3
NE2
N11
G14
N8
G11
NW12
G17
N5
G10
N7
G13
NW6
G10
SW9
SW4
S14
S12
G16
S13
G17
S14
G18
S7
S3
S3
--
SW1
SW4
NW4
NW6
G9
2 days
ago
NE1
NE1
SE4
G7
SE4
SE2
W4
SW4
W6
SW10
SW10
SW12
SW13
G16
S10
G13
S11
S6
S9
G12
S9
SW10
SW11
G14
SW9
SW8
SW5
SW7

Airport Reports
    EDIT      (on/off)   Help   Click EDIT to display multiple airports. Follow links for more data.
AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Newport, Newport State Airport, RI7 mi65 minN 010.00 miOvercast48°F39°F71%1001.4 hPa
New Bedford, New Bedford Regional Airport, MA13 mi65 minN 010.00 miOvercast46°F36°F68%1001.5 hPa
Providence, Theodore Francis Green State Airport, RI14 mi67 minN 010.00 miOvercast49°F33°F55%1001.6 hPa
Taunton, Taunton Municipal Airport, MA21 mi66 minN 010.00 miOvercast44°F34°F68%1001.5 hPa
Pawtucket, North Central State Airport, RI22 mi62 minN 010.00 miLight Rain48°F30°F52%996.1 hPa

Link to 5 minute data for KUUU

Wind History from UUU (wind in knots)
4
AM
5
AM
6
AM
7
AM
8
AM
9
AM
10
AM
11
AM
12
PM
1
PM
2
PM
3
PM
4
PM
5
PM
6
PM
7
PM
8
PM
9
PM
10
PM
11
PM
12
AM
1
AM
2
AM
3
AM
Last 24hrNW3CalmW5W3NW6NW6W76W7
G14
NW10NW10NW8SW10
G19
SW11
G20
SW8
G19
SW8
G19
SW545S4SW4CalmS3Calm
1 day agoCalmN3N6N11N8N8N10--N9N9N8
G14
S9S10S12S10S10S9SW5S4SW34W3NW4NW6
2 days agoCalmCalmCalmCalmE4SE3SE3SE6S4S5S6S9S11S11S9S6S7S7S6SW5S5CalmS3Calm

Tide / Current Tables for Anthony Point, Sakonnet River, Rhode Island
   EDIT   Weekend mode (on/off)   (on/off)   Help   One Week of Data
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
   EDIT      (on/off)   Help   One Week of Data
Westport River Entrance
Click for Map
Wed -- 03:23 AM EDT     0.00 knots Slack
Wed -- 06:14 AM EDT     Sunrise
Wed -- 06:52 AM EDT     Moonset
Wed -- 07:03 AM EDT     2.54 knots Max Flood
Wed -- 09:27 AM EDT     -0.00 knots Slack
Wed -- 12:01 PM EDT     -3.15 knots Max Ebb
Wed -- 03:44 PM EDT     0.00 knots Slack
Wed -- 07:17 PM EDT     Sunset
Wed -- 07:26 PM EDT     2.63 knots Max Flood
Wed -- 08:11 PM EDT     Moonrise
Wed -- 09:53 PM EDT     -0.00 knots Slack
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

12
am
1
am
2
am
3
am
4
am
5
am
6
am
7
am
8
am
9
am
10
am
11
am
12
pm
1
pm
2
pm
3
pm
4
pm
5
pm
6
pm
7
pm
8
pm
9
pm
10
pm
11
pm
-3-2.3-1.4-0.40.61.52.22.52.20.8-1-2.6-3.1-2.7-1.8-0.80.31.222.62.51.5-0.2-2

Weather Map
       (on/off)   Help Weather Map
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 (3,6,7,8)
      (on/off)   Help

Ground Weather Radar Station Boston, MA
   (on/off)   Help
weather_mapweather_map weather_map

Ad by Google

Cookie Policy:
This website uses cookies to save your settings. No personal information is saved. I do not collect statistics on your visit. You can disable cookies in your browser if you like but it is not recommended for this site. I do not sell cookies. Go to a bakery for that. In fact I do not sell anything. To disable cookies from L-36.com, please refer to the Help button in your browser.
Privacy Policy:
I do not sell or share any user data or anything else for that matter. The only personal information I save is in the site log which has a line for each page view which includes the IP address your browser sends in the header as well as which page you requested. I use this to block hackers and other bad actors. I do not use this raw data to create profiles on users. I periodically delete the log files. If you are subject to CCPA, Google ads on this site will not be based on your past behavior so you will likely not see an ad for a lawn mower just because you looked for one at a big box website. I do not believe this site is subject to CCPA but I am doing what I can to follow the guidelines anyway.
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 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.