Marine Weather and Tide Forecast for Westerly, RI
 | Sunrise 5:21 AM Sunset 8:06 PM Moonrise 2:12 AM Moonset 1:39 PM |
ANZ237 Block Island Sound- 404 Am Edt Wed May 21 2025
.gale warning in effect from Thursday morning through Thursday evening - .
Today - NE winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 3 ft. Wave detail: E 2 ft at 4 seconds and se 1 foot at 9 seconds. A slight chance of showers this afternoon.
Tonight - E winds 15 to 20 kt. Gusts up to 20 kt, increasing to 30 kt after midnight. Seas 2 to 4 ft. Wave detail: E 4 ft at 5 seconds and se 1 foot at 9 seconds. A chance of showers in the evening, then showers likely after midnight.
Thu - NE winds 20 to 25 kt with gusts up to 35 kt. Seas 4 to 6 ft. Wave detail: E 6 ft at 7 seconds and se 1 foot at 9 seconds. Patchy fog. Showers. Vsby 1 nm or less.
Thu night - N winds 20 to 25 kt, becoming nw 15 to 20 kt after midnight. Gusts up to 30 kt. Seas 4 to 6 ft. Wave detail: E 6 ft at 7 seconds and S 3 ft at 8 seconds. Patchy fog. Showers, mainly in the evening. Vsby 1 nm or less, increasing to 1 to 3 nm after midnight.
Fri - W winds 10 to 15 kt. Gusts up to 20 kt in the morning. Seas 3 to 5 ft. Wave detail: E 4 ft at 8 seconds and S 3 ft at 8 seconds. A chance of showers in the morning.
Fri night - W winds around 10 kt. Seas 2 to 4 ft. Wave detail: S 3 ft at 7 seconds and E 3 ft at 9 seconds. A chance of showers.
Sat - W winds 10 to 15 kt. Seas 2 to 3 ft. A chance of showers.
Sat night through Sun night - W winds 10 to 15 kt. Seas 2 to 3 ft.
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.
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 404 Am Edt Wed May 21 2025
Synopsis for massachusetts and rhode island coastal waters - Weak high pres builds over new england today. A developing gale center is expected to develop Thu into Fri, bringing e-ne gales to the ma and ri waters, along with dangerous seas Thu afternoon and night. Improving weather conditions Fri, and especially over this weekend, as this storm weakens and drifts into the maritimes. High pres expected over the waters early next week.
7 Day Forecast for Marine Location Near Westerly, RI
NEW! Add second zone forecast
| Westerly Click for Map Wed -- 02:12 AM EDT Moonrise Wed -- 04:14 AM EDT 2.68 feet High Tide Wed -- 05:22 AM EDT Sunrise Wed -- 11:24 AM EDT 0.41 feet Low Tide Wed -- 01:38 PM EDT Moonset Wed -- 04:57 PM EDT 2.91 feet High Tide Wed -- 08:05 PM EDT Sunset Tide / Current data from XTide NOT FOR NAVIGATION |
Westerly, Pawcatuck River, Rhode Island, Tide feet
| 12 am |
| 0.9 |
| 1 am |
| 1.4 |
| 2 am |
| 2 |
| 3 am |
| 2.5 |
| 4 am |
| 2.7 |
| 5 am |
| 2.6 |
| 6 am |
| 2.3 |
| 7 am |
| 1.9 |
| 8 am |
| 1.4 |
| 9 am |
| 1 |
| 10 am |
| 0.7 |
| 11 am |
| 0.4 |
| 12 pm |
| 0.5 |
| 1 pm |
| 1 |
| 2 pm |
| 1.7 |
| 3 pm |
| 2.3 |
| 4 pm |
| 2.8 |
| 5 pm |
| 2.9 |
| 6 pm |
| 2.8 |
| 7 pm |
| 2.4 |
| 8 pm |
| 1.9 |
| 9 pm |
| 1.5 |
| 10 pm |
| 1 |
| 11 pm |
| 0.6 |
| The Race Click for Map Wed -- 12:41 AM EDT 0.00 knots Slack Wed -- 02:12 AM EDT Moonrise Wed -- 03:32 AM EDT 2.23 knots Max Flood Wed -- 05:24 AM EDT Sunrise Wed -- 06:42 AM EDT -0.00 knots Slack Wed -- 09:55 AM EDT -2.67 knots Max Ebb Wed -- 01:03 PM EDT 0.00 knots Slack Wed -- 01:39 PM EDT Moonset Wed -- 04:01 PM EDT 2.58 knots Max Flood Wed -- 07:20 PM EDT -0.00 knots Slack Wed -- 08:05 PM EDT Sunset Wed -- 10:29 PM EDT -2.86 knots Max Ebb Tide / Current data from XTide NOT FOR NAVIGATION |
The Race, Long Island Sound, New York Current, knots
| 12 am |
| -0.8 |
| 1 am |
| 0.3 |
| 2 am |
| 1.4 |
| 3 am |
| 2.1 |
| 4 am |
| 2.2 |
| 5 am |
| 1.6 |
| 6 am |
| 0.7 |
| 7 am |
| -0.3 |
| 8 am |
| -1.5 |
| 9 am |
| -2.4 |
| 10 am |
| -2.7 |
| 11 am |
| -2.2 |
| 12 pm |
| -1.3 |
| 1 pm |
| -0.1 |
| 2 pm |
| 1.2 |
| 3 pm |
| 2.2 |
| 4 pm |
| 2.6 |
| 5 pm |
| 2.3 |
| 6 pm |
| 1.5 |
| 7 pm |
| 0.4 |
| 8 pm |
| -0.8 |
| 9 pm |
| -2 |
| 10 pm |
| -2.8 |
| 11 pm |
| -2.8 |
FXUS61 KBOX 210842 AFDBOX
Area Forecast Discussion National Weather Service Boston/Norton MA 442 AM EDT Wed May 21 2025
SYNOPSIS
Cloudy with unseasonably cool high temperatures for the remainder of this work week that will run 10 to 20 degrees below normal. A late season Nor'eater will bring a cold windswept heavy rain to the region tonight into early Friday.
The brunt of this storm appears to be Thursday, when wind gusts of 40-50+ mph will be possible along the coast with pockets of minor coastal flooding also possible. The soaking rain will likely come to an end Friday morning, but a few showers will remain possible Friday afternoon into Saturday. Temperatures will slowly moderate, but still remain below normal into this weekend.
NEAR TERM /UNTIL 6 PM THIS EVENING/
Key Messages:
* Slightly cooler with clouds and patchy drizzle.
Weak high pressure extends from Canada into southern New England today. While not strong enough to keep the clouds at bay, there should be a period of weaker winds this morning. As this high pressure moves away from our region, gusty winds begin to return.
Slightly cooler today due to a persistent E-NE wind. Dry for most, but cannot dismiss the idea of patchy drizzle at times.
SHORT TERM /6 PM THIS EVENING THROUGH 6 PM THURSDAY/
Key Messages:
* Rain moves in tonight into Thursday.
* 1-2" of rainfall with localized 3" amounts possible. Poor- drainage flooding possible in spots.
* ENE wind gusts of 40-50+ mph possible along the coast Thursday, with perhaps some pockets of minor coastal flooding during high tide
The latest guidance suite has come into better agreement, but still some variation in track. The consensus solution takes a late season nor-easter towards southeast MA by late Thursday.
A cold, windswept rain arrives tonight ahead of this low pressure. The plume of moisture ahead of the system, along with a 25-35 kt LLJ will generate a precip shield slowly expanding into most of our region by daybreak Thursday. As the pressure gradient tightens we'll also see winds at the surface become increasingly gusty toward sunrise, gusting 20-30 mph but the bulk of the rain and wind arrive later Thursday into Thursday night.
The peak of the winds should be during Thursday afternoon and evening. May need to consider wind headlines along the immediate coast, Cape and islands. Do not yet have enough confidence to do so area-wise, but thinking more along the lines of Wind Advisories than High Wind Warnings.
While astronomical tides are not especially high, they are high enough where some pockets of minor coastal flooding become possible across portions of eastern MA during the time of high tide Thursday afternoon and evening. A Coastal Flood Advisory may eventually be needed with later forecasts.
LONG TERM /THURSDAY NIGHT THROUGH TUESDAY/
Key Messages:
* Storm departs Thu night
* A few showers will remain possible Fri into Sat but these will be hit-or-miss, followed may mainly dry weather Sun and Mon
* Temperatures gradually moderate through this holiday weekend, but we probably do not break 70 until Memorial Day
Details...
After the steady rain departs Fri morning, a few showers will remain possible at times Fri afternoon into Sat, but a washout is not expected. A lot of these scattered showers will be diurnally driven with anomalous shortwave energy/cold pool aloft overhead. This anomalous upper level trough begins to shift to the northeast Sun and Memorial Day, which should bring mainly dry weather.
Temperatures will be slow to moderate through this weekend, but should be closer to normal Sunday into Tuesday.
AVIATION /08Z WEDNESDAY THROUGH SUNDAY/
Low - less than 30 percent.
Moderate - 30 to 60 percent.
High - greater than 60 percent.
Today: High confidence.
Widespread MVFR cloud bases with little change. NE winds increase to around 10-15 kt with gusts to 20+ kt.
Tonight: Moderate confidence.
MVFR-IFR with increasing rain chances as heavier precipitation moves in from the southwest. E/ENE winds 10-20 kts, increasing toward 12Z.
Thursday: Moderate confidence.
IFR with gusty E winds. Periods of moderate to heavy rainfall, especially from late morning into the evening.
BOS TAF...High Confidence in TAF.
BDL TAF...High Confidence in TAF.
Outlook /Thursday Night through Sunday/...
Thursday Night: Mainly IFR, with areas MVFR possible. Windy with gusts up to 35 kt. SHRA, patchy BR.
Friday: MVFR/IFR conditions possible. Breezy. Chance SHRA.
Friday Night: Mainly VFR, with local IFR possible. Chance SHRA.
Saturday: Mainly VFR, with areas MVFR possible. Breezy. Chance SHRA.
Saturday Night: VFR.
Sunday: VFR. Breezy.
MARINE
Forecaster Confidence Levels:
Low - less than 30 percent.
Medium - 30 to 60 percent.
High - greater than 60 percent.
Today Through Tonight: High confidence.
NE winds increasing to 10-15 kt with gusts 20-25 kt. Seas may still be near 5 ft in southeast waters through tonight. rain arrives across the southern coastal waters late tonight, and across the eastern coastal waters Thursday morning. Poor visibility in moderate to heavy rainfall at times. Increasing winds as a low pressure moves across the waters late Thursday into Thursday night.
Outlook /Thursday Night through Sunday/...
Thursday Night: Low risk for gale force winds with gusts up to 35 kt. Rough seas up to 12 ft. Chance of rain showers, patchy fog. Local visibility 1 nm or less.
Friday: Low risk for Small Craft Advisory winds with gusts up to 30 kt. Areas of rough seas. Slight chance of rain showers.
Friday Night through Saturday: Winds less than 25 kt. Seas up to 5 ft. Slight chance of rain showers.
Saturday Night: Winds less than 25 kt. Areas of seas approaching 5 ft.
Sunday: Winds less than 25 kt.
BOX WATCHES/WARNINGS/ADVISORIES
CT...None.
MA...None.
RI...None.
MARINE...Gale Warning from 1 PM Thursday to 1 AM EDT Friday for ANZ230.
Gale Warning from 9 AM Thursday to 1 AM EDT Friday for ANZ231.
Gale Warning from 9 AM to 7 PM EDT Thursday for ANZ232>235-237.
Gale Watch from Thursday morning through Thursday evening for ANZ236.
Gale Warning from 9 AM Thursday to 5 AM EDT Friday for ANZ250- 251.
Gale Warning from 7 AM Thursday to 1 AM EDT Friday for ANZ254.
Gale Warning from 7 AM to 7 PM EDT Thursday for ANZ255-256.
Area Forecast Discussion National Weather Service Boston/Norton MA 442 AM EDT Wed May 21 2025
SYNOPSIS
Cloudy with unseasonably cool high temperatures for the remainder of this work week that will run 10 to 20 degrees below normal. A late season Nor'eater will bring a cold windswept heavy rain to the region tonight into early Friday.
The brunt of this storm appears to be Thursday, when wind gusts of 40-50+ mph will be possible along the coast with pockets of minor coastal flooding also possible. The soaking rain will likely come to an end Friday morning, but a few showers will remain possible Friday afternoon into Saturday. Temperatures will slowly moderate, but still remain below normal into this weekend.
NEAR TERM /UNTIL 6 PM THIS EVENING/
Key Messages:
* Slightly cooler with clouds and patchy drizzle.
Weak high pressure extends from Canada into southern New England today. While not strong enough to keep the clouds at bay, there should be a period of weaker winds this morning. As this high pressure moves away from our region, gusty winds begin to return.
Slightly cooler today due to a persistent E-NE wind. Dry for most, but cannot dismiss the idea of patchy drizzle at times.
SHORT TERM /6 PM THIS EVENING THROUGH 6 PM THURSDAY/
Key Messages:
* Rain moves in tonight into Thursday.
* 1-2" of rainfall with localized 3" amounts possible. Poor- drainage flooding possible in spots.
* ENE wind gusts of 40-50+ mph possible along the coast Thursday, with perhaps some pockets of minor coastal flooding during high tide
The latest guidance suite has come into better agreement, but still some variation in track. The consensus solution takes a late season nor-easter towards southeast MA by late Thursday.
A cold, windswept rain arrives tonight ahead of this low pressure. The plume of moisture ahead of the system, along with a 25-35 kt LLJ will generate a precip shield slowly expanding into most of our region by daybreak Thursday. As the pressure gradient tightens we'll also see winds at the surface become increasingly gusty toward sunrise, gusting 20-30 mph but the bulk of the rain and wind arrive later Thursday into Thursday night.
The peak of the winds should be during Thursday afternoon and evening. May need to consider wind headlines along the immediate coast, Cape and islands. Do not yet have enough confidence to do so area-wise, but thinking more along the lines of Wind Advisories than High Wind Warnings.
While astronomical tides are not especially high, they are high enough where some pockets of minor coastal flooding become possible across portions of eastern MA during the time of high tide Thursday afternoon and evening. A Coastal Flood Advisory may eventually be needed with later forecasts.
LONG TERM /THURSDAY NIGHT THROUGH TUESDAY/
Key Messages:
* Storm departs Thu night
* A few showers will remain possible Fri into Sat but these will be hit-or-miss, followed may mainly dry weather Sun and Mon
* Temperatures gradually moderate through this holiday weekend, but we probably do not break 70 until Memorial Day
Details...
After the steady rain departs Fri morning, a few showers will remain possible at times Fri afternoon into Sat, but a washout is not expected. A lot of these scattered showers will be diurnally driven with anomalous shortwave energy/cold pool aloft overhead. This anomalous upper level trough begins to shift to the northeast Sun and Memorial Day, which should bring mainly dry weather.
Temperatures will be slow to moderate through this weekend, but should be closer to normal Sunday into Tuesday.
AVIATION /08Z WEDNESDAY THROUGH SUNDAY/
Low - less than 30 percent.
Moderate - 30 to 60 percent.
High - greater than 60 percent.
Today: High confidence.
Widespread MVFR cloud bases with little change. NE winds increase to around 10-15 kt with gusts to 20+ kt.
Tonight: Moderate confidence.
MVFR-IFR with increasing rain chances as heavier precipitation moves in from the southwest. E/ENE winds 10-20 kts, increasing toward 12Z.
Thursday: Moderate confidence.
IFR with gusty E winds. Periods of moderate to heavy rainfall, especially from late morning into the evening.
BOS TAF...High Confidence in TAF.
BDL TAF...High Confidence in TAF.
Outlook /Thursday Night through Sunday/...
Thursday Night: Mainly IFR, with areas MVFR possible. Windy with gusts up to 35 kt. SHRA, patchy BR.
Friday: MVFR/IFR conditions possible. Breezy. Chance SHRA.
Friday Night: Mainly VFR, with local IFR possible. Chance SHRA.
Saturday: Mainly VFR, with areas MVFR possible. Breezy. Chance SHRA.
Saturday Night: VFR.
Sunday: VFR. Breezy.
MARINE
Forecaster Confidence Levels:
Low - less than 30 percent.
Medium - 30 to 60 percent.
High - greater than 60 percent.
Today Through Tonight: High confidence.
NE winds increasing to 10-15 kt with gusts 20-25 kt. Seas may still be near 5 ft in southeast waters through tonight. rain arrives across the southern coastal waters late tonight, and across the eastern coastal waters Thursday morning. Poor visibility in moderate to heavy rainfall at times. Increasing winds as a low pressure moves across the waters late Thursday into Thursday night.
Outlook /Thursday Night through Sunday/...
Thursday Night: Low risk for gale force winds with gusts up to 35 kt. Rough seas up to 12 ft. Chance of rain showers, patchy fog. Local visibility 1 nm or less.
Friday: Low risk for Small Craft Advisory winds with gusts up to 30 kt. Areas of rough seas. Slight chance of rain showers.
Friday Night through Saturday: Winds less than 25 kt. Seas up to 5 ft. Slight chance of rain showers.
Saturday Night: Winds less than 25 kt. Areas of seas approaching 5 ft.
Sunday: Winds less than 25 kt.
BOX WATCHES/WARNINGS/ADVISORIES
CT...None.
MA...None.
RI...None.
MARINE...Gale Warning from 1 PM Thursday to 1 AM EDT Friday for ANZ230.
Gale Warning from 9 AM Thursday to 1 AM EDT Friday for ANZ231.
Gale Warning from 9 AM to 7 PM EDT Thursday for ANZ232>235-237.
Gale Watch from Thursday morning through Thursday evening for ANZ236.
Gale Warning from 9 AM Thursday to 5 AM EDT Friday for ANZ250- 251.
Gale Warning from 7 AM Thursday to 1 AM EDT Friday for ANZ254.
Gale Warning from 7 AM to 7 PM EDT Thursday for ANZ255-256.
| Stations | Dist | Age | Wind | Air | Water | Waves | inHg | DewPt |
| NLHC3 | 14 mi | 47 min | 50°F | 52°F | 30.05 | |||
| MTKN6 - 8510560 - Montauk, NY | 24 mi | 47 min | 51°F | 57°F | 29.99 | |||
| PDVR1 | 27 mi | 47 min | NNE 5.1G | 50°F | 30.05 | 44°F | ||
| QPTR1 - 8454049 - Quonset Point, RI | 27 mi | 47 min | NNE 9.9G | 50°F | 51°F | 30.06 | ||
| NWPR1 - 8452660 - Newport, RI | 28 mi | 47 min | NE 5.1G | 50°F | 56°F | 30.05 | ||
| NAXR1 - Narragansett Bay Reserve, RI | 32 mi | 62 min | ESE 6 | 50°F | 30.04 | 46°F | ||
| PTCR1 - 8452951 - Potter Cove, Prudence Island, RI | 32 mi | 47 min | ENE 4.1G | 50°F | 30.05 | |||
| CPTR1 - 8452944 - Conimicut Light, RI | 35 mi | 47 min | NNE 7G | 48°F | 57°F | 30.06 | ||
| FOXR1 - 8454000 - Providence, RI | 37 mi | 47 min | ENE 7G | 49°F | 52°F | 30.06 | ||
| PVDR1 | 37 mi | 47 min | NE 6G | 49°F | 30.07 | |||
| BLTM3 - 8447387 - Borden Flats Light at Fall River, MA | 41 mi | 47 min | ENE 8.9G | 50°F | 30.06 | |||
| FRXM3 | 41 mi | 47 min | 50°F | 44°F | ||||
| 44085 | 42 mi | 47 min | 50°F | 54°F | 2 ft | |||
| BUZM3 - Buzzards Bay, MA | 42 mi | 47 min | NE 13G | 30.06 | ||||
| FRVM3 - 8447386 - Fall River, MA | 42 mi | 47 min | 50°F | 63°F | 30.06 | |||
| 44097 - Block Island, RI (154) | 47 mi | 21 min | 55°F | 4 ft |
Wind History for No Ports station near this location
toggle option: (graph/table)
No data
| Airport | Dist | Age | Wind kt | Vis | Sky | Weather | Air | DewPt | RH | inHg |
| KWST WESTERLY STATE,RI | 3 sm | 54 min | N 03 | 10 sm | Overcast | 48°F | 43°F | 81% | 30.05 | |
| KGON GROTONNEW LONDON,CT | 12 sm | 51 min | NNE 06 | 10 sm | Overcast | 50°F | 43°F | 76% | 30.04 | |
| KBID BLOCK ISLAND STATE,RI | 20 sm | 51 min | NE 07 | 10 sm | Overcast | 48°F | 43°F | 81% | 30.05 | |
| KMTP MONTAUK,NY | 21 sm | 53 min | NNE 05 | -- | 54°F | 45°F | 71% | 30.05 |
Link to 1 hour of 5 minute data for KWST
Terminal Aerodrome Forecast (TAF) for KWST
Wind History Graph: WST
(wind in knots)
GEOS Local Image of Northeast
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