Newport, RI Marine Weather and Tide Forecast
L-36.com
Top   Marine   7-Day   NWS   Buoy   Airport   Tide   Map   GEOS   Radar  

Marine Weather and Tide Forecast for Newport, RI

May 20, 2024 9:16 AM EDT (13:16 UTC) Change Location
Sunrise 5:19 AM   Sunset 8:04 PM
Moonrise 5:23 PM   Moonset 3:40 AM 
  Print   HELP   Reset   Save   Recall  New
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      HIDE   Help
ANZ236 Narragansett Bay- 705 Am Edt Mon May 20 2024

Today - NE winds 5 to 10 kt, becoming E this afternoon. Waves 1 foot or less.

Tonight - S winds around 5 kt. Waves 1 foot or less.

Tue - SW winds 5 to 10 kt, increasing to 10 to 15 kt in the afternoon. Waves 1 foot or less.

Tue night - SW winds around 10 kt. Waves around 2 ft.

Wed and Wed night - SW winds 10 to 15 kt with gusts up to 20 kt. Waves around 2 ft.

Thu - SW winds 10 to 15 kt with gusts up to 20 kt. Waves 2 to 3 ft.

Thu night - SW winds 10 to 15 kt with gusts up to 20 kt. Waves 2 to 3 ft. A chance of showers and tstms.

Fri and Fri night - W winds 5 to 10 kt. Waves around 2 ft.
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 705 Am Edt Mon May 20 2024

Synopsis for massachusetts and rhode island coastal waters - High pres over coastal maine settles over the waters Mon and continues thru Wed. A cold front brings the risk for showers and Thunderstorms on Thurs. High pres then return to the waters for Friday into the memorial day weekend.


7 Day Forecast for Marine Location Near Newport, RI
   Hourly   EDIT   Help   Map   HIDE
NEW! Add second zone forecast


Area Discussion for - Boston, MA
      HIDE   Help   
NOTE: mouseover dotted underlined text for definition
FXUS61 KBOX 201103 AFDBOX

Area Forecast Discussion National Weather Service Boston/Norton MA 703 AM EDT Mon May 20 2024

SYNOPSIS
Today is the cornerstone of a pattern change towards more mild conditions though clouds and cool temperatures will still hang across the Cape. Much milder conditions Tuesday with heat peaking on Wednesday. Frontal passage Thursday, with increased thunderstorm chances, will usher in more seasonable temperatures for the holiday weekend.

NEAR TERM /UNTIL 6 PM THIS EVENING/
645 AM Update:

Forecast challenge today continues to be timing the eventual erosion/scattering out of the existing stratus layer which blankets much of Southern New England (excluding northwest MA).
Satellite data this morning is already showing some patchy breaks/holes in the stratus, and model soundings from the RAP indicate the moisture layer is shallow and thus more sensitive to being eroded thru insolational effects. It looks like by mid morning that stratus should start to disperse over the western and central portions of Southern New England, and into the late-morning hrs for eastern MA and most of RI. Could take until early this afternoon before we start to see some more optimism in stratus for the South Coast, Cape Cod and Islands. Once the stratus burns off, expect mostly full sun and warming temps.
Brought highs up a couple degrees which should bring most of the CT valley into the low 80s, with mid 70s for central MA/Metrowest Boston into northern RI.

Previous discussion:

Today is the cornerstone of a pattern shift towards summer like conditions across southern New England with surface high pressure centered over southern NH/ME and mid level ridging continuing to build into southern New England. Greatest forecast challenge today will be cloud cover, and by proxy, high temperatures with high resolution guidance again struggling overnight to accurately depict clearing across wide swaths of the area. As of this writing, very little fog has developed across the region away from the coast while light drizzle continues to advect over SE MA and the Cape.

Most abundant sunshine will be across the CT River Valley where clear conditions developed overnight. While dry air moves in with force above 850mb today, and RH falls to as low as ~25% between 850- 300mb this afternoon, model soundings show the surface inversion/low level moisture driven by onshore flow will hold steady through at least mid morning across eastern MA/RI, with the NAM suggesting the inversion won't mix out until early afternoon. With high to our north, a gradual wind shift from NE to S/SW through late evening should kickstart clearing this afternoon. So, while gradual clearing is expected for portions of the CWA from Worcester, east, clouds will really struggle to mix out across the Cape/Islands/South Coast today where PWATs remain above 1.1". With a high degree of uncertainty in the cloud cover forecast, particularly for eastern MA/RI, there is potential for a bit of a bust in temperatures, particularly in eastern MA. Generally trended towards a middle of the road solution with highs around 80 across CT and western MA, in the low 70s across the coastal plain, and as cool as the upper 50s on Nantucket!, more clearing and deeper mixing will result in much warmer temperatures.

SHORT TERM /6 PM THIS EVENING THROUGH 6 PM TUESDAY/

Patchy fog development is possible again tonight though developing SW winds around 5-10kt, and dewpoint depressions around 4F should preclude widespread fog across the interior. With that said, the same mechanism of SW flow should encourage some fog/reduced vsbys along the South Coast and Islands where both temps and dewpoints hover around 50F and SSTs are in the low to mid 50s.

With surface high still in place and mid level ridge growing stronger, guidance is still quite poor in diagnosing cloud cover for Tuesday, with several CAMs, like the HRRR, showing a mostly cloudy day. Not feeling particularly keen on the "cloudy all day" solutions with PWATs falling to as low as 0.7" and low RH above the mixed layer, but early morning fog/stratus, particularly along the south coast, may take a few hours to burn off. Decent boundary layer mixing with 850mb temperatures approaching 16C will support highs well into the 80s across much of the interior, though onshore flow across the south coast will keep temps much cooler there, in the 60s to perhaps 70s. Given SW flow, Boston MAY see their first 80F reading of the season, and while it's possible the ASOS may not hit 80F, the western suburbs of the city have a high likelihood of doing so.

LONG TERM /TUESDAY NIGHT THROUGH SUNDAY/
Highlights:

* Peak of the midweek very warm weather is Wednesday - 80s highs with a few locations in the CT and Merrimack Valleys seeing a few 90 degree readings. Tolerable humidity levels.

* Cold front Thursday afternoon to early evening brings a reprieve to the warmth but also could fuel scattered t-storms.

* Drier and with cooler, more seasonable temperatures Friday into the Memorial Day Weekend.

Details:

Still looking at Wednesday as the warmest day of the anticipated midweek spell of very warm temperatures reminiscent of summer. 850 mb temps rising into the +14 to +16C range along with full mixing and southwest breezes should promote these very warm temperatures.
NBM probs continue to show moderate to high (60 to 90 percent) probs of temps reaching 90+ degrees in the CT and Merrimack Valleys, with lower (no greater than 30%) probs of 90+ high temps in central MA, northeast CT and portions of Metrowest. These are a bit higher than the prior 13z NBM cycle. The one thing that is a little peculiar in the NWP is that modeled dewpoints were shown to be in the lower to mid 60s across a good majority of the guidance; I don't think values this high are necessarily realistic given the well mixed PBL and adiabatic downsloping that should be taking place per model soundings. That's also a concern/source of uncertainty as we move into Thursday as well. Advertised highs upper 80s to low 90s in the CT and Merrimack Valleys - although those could be somewhat conservative - and the mid 80s for most of northern RI, central and eastern MA. Cooler readings near the south coast (upper 60s-mid 70s)
where SW flow will allow for a bit of a maritime breeze. Should be a pretty mild Wednesday evening too, mid 50s to lower 60s, but did note some of the guidance showing weakening convection moving in from eastern NY into our far western counties in MA later in the overnight. Left a slight chance PoP mention in the forecast for now for the eastern Berkshires but we'll have to see if this materializes in subsequent guidance.

A cold front then trudges eastward through Southern New England on Thursday. It seems as though in the 00z guidance that the front is about 6 hours slower than prior model cycles; that may allow for another very warm day with a slower timing, but also could allow for slightly more convective instability to help spark showers/t-storms along the front, particularly near and west of I-95. Similar to Wednesday, models are now forecasting dewpoints in the lower to mid 60s although those seem a bit high. If we can see dewpoints push into the lower 60s, we could see CAPE values around 800-1500 J/kg accompanied by deep-layer southwesterly shear magnitudes around 35 kt (stronger flow mainly to our north). This is really on the borderline for storms becoming strong to severe and doesn't really scream "severe storms", but is something we'll be needing to monitor in the coming days. Kept highs in the upper 60s/around 70 near the south coast, and in the upper 70s to mid 80s further inland.

For Friday, the cold front's southeastward passage further offshore could be delayed a bit as the front's orientation becomes nearly parallel to the 700-300 mb flow, which could keep clouds and showers around the south coast for part of the day. However high pressure is progged to ridge into much of New England, with ridging continuing into a good part of the Memorial Day Weekend. Temperatures Friday into the weekend trend cooler and more seasonable than midweek, with highs in the 70s (60s near the coast). Thus so far, weather conditions for Memorial Day Weekend seem favorable.

AVIATION /12Z MONDAY THROUGH FRIDAY/
Forecast Confidence Levels:

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

12z TAF Update:

Today: High confidence in TAF/trends but moderate on the timing.

Initially, a mix of MVFR to LIFR from stratus ceilings, with lowest ceilings further east and south one goes. Stratus should start to burn off to VFR by ~14-16z for the western and central airports, and around ~16-18z for BED, BOS and PVD. It may take until midafternoon before scattering out to VFR over the Cape and Islands. One potential fly in the ointment that will need ot be monitored is if stratus returns back landward in coastal areas as winds shift from NE to E/ESE - it seems unlikely as the flow is light but is a possible outcome.

Tonight: Moderate confidence.

IFR to MVFR continues for the Cape and Islands, generally VFR across the interior except IFR where patchy fog.

Tuesday... Low cigs/vsby due to fog burn off quickly to VFR for all terminals. Winds from the SW will be strong enough to stave off a seabreeze.

KBOS TAF...High confidence in TAF/trends though some uncertainty on the timing of eroding stratus. MVFR should trend to VFR by ~16-18z with winds becoming E by this afternoon. Low clouds may return tonight after 03z as winds shift to light southeast.

KBDL TAF...High confidence in TAF/trends, though some uncertainty on the timing of eroding stratus. MVFR bases erode to VFR by ~13-15z. Light NE winds shift to S around 4-6 kt this afternoon. Could see patchy fog develop tonight but this isn't set in stone.

Outlook /Tuesday Night through Friday/...

Tuesday Night: VFR.

Wednesday through Wednesday Night: VFR. Breezy.

Thursday: VFR. Breezy. Slight chance SHRA, slight chance TSRA.

Thursday Night: VFR. Breezy. Chance TSRA, slight chance SHRA.

Friday: VFR.

MARINE
Forecaster Confidence Levels:

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

Today... High confidence

Lows clouds/drizzle and patchy early morning fog with vsbys 1-3 miles, slowly burns off with improving conditions mid to late afternoon. High pressure over SNE results in light NE winds become east and then southeast late in the day.

Monday night...high confidence.

Ridge of high pressure crest over the waters, yielding light SE winds becoming SW. Patchy fog may limit vsby at times.

Tuesday... high confidence

AM fog will burn off to pleasant boating conditions. SW winds with seas less than 5 ft.

Outlook /Tuesday Night through Friday/...

Tuesday Night through Wednesday Night: Winds less than 25 kt.
Seas locally approaching 5 ft.

Thursday: Winds less than 25 kt. Areas of seas approaching 5 ft.

Thursday Night: Winds less than 25 kt. Seas locally approaching 5 ft. Slight chance of rain showers, slight chance of thunderstorms.

Friday: Winds less than 25 kt. Slight chance of rain showers.

BOX WATCHES/WARNINGS/ADVISORIES
CT...None.
MA...None.
RI...None.
MARINE...Small Craft Advisory until 2 PM EDT this afternoon for ANZ254.




Weather Reporting Stations
   EDIT       HIDE   Help
Stations Dist Age Wind Air TempWater Temp WavesinHgDewPt
NWPR1 - 8452660 - Newport, RI 4 mi46 min N 9.9G13 55°F 55°F30.05
QPTR1 - 8454049 - Quonset Point, RI 8 mi46 min NNE 12G15 56°F 30.06
PDVR1 10 mi46 min N 8G12 57°F 30.0551°F
PRUR1 10 mi46 min 56°F 53°F
NAXR1 - Narragansett Bay Reserve, RI 12 mi91 min E 8 56°F 30.0453°F
PTCR1 - 8452951 - Potter Cove, Prudence Island, RI 12 mi46 min NE 7G11 56°F 30.08
CPTR1 - 8452944 - Conimicut Light, RI 17 mi46 min N 11G13 55°F 56°F30.06
44085 19 mi46 min 54°F 53°F2 ft
BUZM3 - Buzzards Bay, MA 19 mi76 min NNE 16G17 53°F 30.04
FRXM3 19 mi46 min 55°F 53°F
BLTM3 - 8447387 - Borden Flats Light at Fall River, MA 20 mi46 min NNE 7G8.9 55°F 30.06
FRVM3 - 8447386 - Fall River, MA 20 mi46 min 56°F 54°F30.07
PVDR1 22 mi46 min N 5.1G11 58°F 30.0852°F
FOXR1 - 8454000 - Providence, RI 23 mi46 min N 5.1G9.9 57°F 50°F30.07
NBGM3 27 mi46 min NE 9.9G15 55°F 30.06
44097 - Block Island, RI (154) 37 mi50 min 49°F3 ft
BZBM3 - 8447930 - Woods Hole, MA 38 mi46 min 54°F 55°F30.04
LDLC3 - New London Ledge CT - Ledge Light Weather 39 mi46 min NNE 9.9G13 58°F
NLHC3 39 mi46 min 57°F 61°F30.05
MTKN6 - 8510560 - Montauk, NY 42 mi46 min 55°F 53°F30.00


Wind History for Newport, RI
(wind in knots)    EDIT      HIDE   Help
toggle option: (graph/table)



Airport Reports
    EDIT      HIDE   Help   Click EDIT to display multiple airports. Follow links for more data.
AirportDistAgeWind ktVisSkyWeatherTempDewPtRHinHg
KUUU NEWPORT STATE,RI 7 sm23 minNNE 0910 smOvercast55°F52°F88%30.05
KPVD THEODORE FRANCIS GREEN STATE,RI 17 sm25 minNNE 1010 smMostly Cloudy57°F54°F88%30.07
KBID BLOCK ISLAND STATE,RI 23 sm20 minNNE 1110 smOvercast54°F52°F94%30.06
KWST WESTERLY STATE,RI 24 sm23 minvar 0510 smA Few Clouds63°F54°F72%30.05
Link to 5 minute data for KUUU


Wind History from UUU
(wind in knots)
toggle option: (graph/table)


Tide / Current for Castle Hill, Narragansett Bay, Rhode Island
   
EDIT   Weekend mode (on/off)   HIDE   Help
Castle Hill
Click for Map
Mon -- 12:23 AM EDT     0.43 feet Low Tide
Mon -- 03:39 AM EDT     Moonset
Mon -- 05:21 AM EDT     Sunrise
Mon -- 06:14 AM EDT     2.98 feet High Tide
Mon -- 12:01 PM EDT     0.32 feet Low Tide
Mon -- 05:22 PM EDT     Moonrise
Mon -- 06:35 PM EDT     3.66 feet High Tide
Mon -- 08:03 PM EDT     Sunset
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

Castle Hill, Narragansett Bay, Rhode Island, Tide feet
12
am
0.4
1
am
0.5
2
am
0.7
3
am
1.2
4
am
1.9
5
am
2.6
6
am
3
7
am
2.8
8
am
2.3
9
am
1.6
10
am
0.9
11
am
0.5
12
pm
0.3
1
pm
0.4
2
pm
0.8
3
pm
1.4
4
pm
2.2
5
pm
3
6
pm
3.6
7
pm
3.6
8
pm
3.2
9
pm
2.4
10
pm
1.5
11
pm
0.8


Tide / Current for Westport River Entrance, Massachusetts Current
   EDIT      HIDE   Help
Westport River Entrance
Click for Map
Mon -- 01:46 AM EDT     0.00 knots Slack
Mon -- 03:38 AM EDT     Moonset
Mon -- 05:00 AM EDT     2.20 knots Max Flood
Mon -- 05:20 AM EDT     Sunrise
Mon -- 07:18 AM EDT     -0.01 knots Slack
Mon -- 09:44 AM EDT     -2.13 knots Max Ebb
Mon -- 01:59 PM EDT     0.00 knots Slack
Mon -- 05:19 PM EDT     2.14 knots Max Flood
Mon -- 05:21 PM EDT     Moonrise
Mon -- 07:35 PM EDT     -0.01 knots Slack
Mon -- 08:02 PM EDT     Sunset
Mon -- 10:05 PM EDT     -2.33 knots Max Ebb
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

Westport River Entrance, Massachusetts Current, knots
12
am
-1.2
1
am
-0.6
2
am
0.2
3
am
1
4
am
1.8
5
am
2.2
6
am
1.7
7
am
0.5
8
am
-1
9
am
-1.9
10
am
-2.1
11
am
-1.8
12
pm
-1.3
1
pm
-0.7
2
pm
0
3
pm
0.8
4
pm
1.6
5
pm
2.1
6
pm
1.9
7
pm
0.9
8
pm
-0.6
9
pm
-1.9
10
pm
-2.3
11
pm
-2.1


Weather Map
      HIDE   Help


GEOS Local Image of north east   
EDIT   HIDE



Boston, MA,




NOTICE: Some pages have affiliate links to Amazon. As an Amazon Associate, I earn from qualifying purchases. Please read website Cookie, Privacy, and Disclamers by clicking HERE. To contact me click HERE. For my YouTube page click HERE