Sunrise 5:56 AM   Sunset 7:32 PM Moonrise 3:29 PM   Moonset 4:20 AM

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ANZ236 Narragansett Bay- 101 Am Edt Fri Apr 19 2024
Rest of tonight - NE winds 5 to 10 kt. Waves 2 to 3 ft. Fri - E winds 5 to 10 kt, becoming se in the afternoon. Waves around 2 ft. Fri night - S winds 5 to 10 kt. Waves around 2 ft. Patchy fog after midnight. Showers likely after midnight. Sat - SW winds 5 to 10 kt. Waves around 2 ft. Showers, mainly in the morning. Patchy fog in the morning with vsby 1 to 3 nm. Sat night - W winds 10 to 15 kt. Waves around 2 ft.Sun and Sun night - W winds 10 to 15 kt with gusts up to 25 kt. Waves 2 to 3 ft. Mon through Tue - S winds 10 to 15 kt with gusts up to 20 kt. Waves around 2 ft. Tue night - S winds around 15 kt with gusts up to 20 kt. Waves 2 to 3 ft. A chance of showers.
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 101 Am Edt Fri Apr 19 2024
Synopsis for massachusetts and rhode island coastal waters - Ridge of high pressure builds across the region tonight and Friday. A cold front moves through late Friday and early Saturday. High pressure ridge will develop Saturday to our south and remain there into early next week.

FXUS61 KBOX 190512 AFDBOX

Area Forecast Discussion National Weather Service Boston/Norton MA 112 AM EDT Fri Apr 19 2024

SYNOPSIS

A more seasonable day on Friday, along with dry conditions during the daytime hours. A cold front brings another round of showers overnight into early Saturday morning. Dry for the rest of Saturday and all day Sunday with breezy conditions both days.
The dry stretch of weather continues as we head into early next week, with the next chance for unsettled weather being Wednesday.

NEAR TERM /UNTIL 6 AM THIS MORNING/

935 PM Update...

* Considerable cloudiness overnight...lows upper 30s/lower 40s

The last of the light showers/sprinkles from a mid level cloud deck across far southeast MA will be exiting the region in the next 1-2 hours. This is response to the deamplifying shortwave moving east of the region. So while dry weather will prevail for the overnight hours...mid level cloud deck will be stubborn given there is not a strong push of dry air and low level winds will remain onshore. A few breaks are possible in the clouds...but expect a fair amount of clouds to hang tough overnight. This should hold overnight low temps in the upper 30s to the lower 40s.

SHORT TERM /6 AM THIS MORNING THROUGH 6 PM SATURDAY/

345 pm update...

Highlights:

* Slight improvement for Friday with drier weather for the daylight hours and near seasonable temperatures.

* Unsettled overnight with another chance for light rain, especially along the south coast near daybreak on Saturday.

Some improvement weatherwise on Friday with surface high pressure expanding into southern New England, along with mid-level ridging. A warmer, more seasonable day with highs in the upper 50s and low 60s are on tap. Where temperatures may struggle are along the immediate coast as the winds are still coming off of the water. Areas of low clouds to start gives way to breaks of sunshine late morning into early afternoon, short-lived as mid and high clouds move in from west to east ahead of a cold front. Winds are more or less out of the southeast due to the flow from the surface high based in eastern Quebec and surface low well off to the south near Bermuda. The pressure gradient eases allowing for gusts less than 20 MPH at the coast.

Increasing clouds from west to east during the second-half of the day ahead of an approaching front. A prefrontal trough could set off a few showers across western Massachusetts and northern Connecticut late afternoon, but do think the bulk of any perception will come with the frontal passage overnight, then kick off shore shortly after sunrise on Saturday. That said, do not anticipate a soaking rain, much of southern New England receives a few hundredths of an inch, and the immediate south coast, Cape, and Island receive around a quarter to a third of an inch.

Wind shifts overnight from southeast to southwest, no strong gusts are expected. Overnight lows dip into the middle 40s.

LONG TERM /SATURDAY NIGHT THROUGH THURSDAY/

345 pm update...

Key Point: * Fire weather concerns this weekend through Tuesday

Fairly high consistency amongst the 12z global guidance runs as well with prior runs. So that results in overall higher than average confidence. In general, most of us will consider the weather for most of the period to be pretty nice. A weak front will be moving offshore during the first part of Saturday, only bringing a few light showers. Behind the front, a much drier airmass will be spreading in. So that will result in clearing skies. Have again blended in the warmer side of guidance for temperatures and lower side of guidance for dewpoints. Forecast soundings still show excellent mixing (5000-6000ft) developing in the afternoon along with westerly winds. Being still a "pre- greenup" phase of vegetation, that usually means temperatures overachieve and humidity levels go lower than most guidance thanks to the combo of downsloping and deep boundary layer mixing. We should see widespread mid 60s for highs, perhaps making a run at 70F in the CT River Valley.

Sunday will be similar, though with 850mb temperatures slightly cooler (down around -1C vs +1C on Saturday), daytime highs will be a few degrees cooler, primarily either side of 60F. Again deep boundary layer mixing (6000-7000ft) will act to bring down some of the 25kt winds aloft along with dry air. Thus winds will be gustier than on Saturday and lower dewpoints. The combo will mean we will be flirting with some of the fire weather thresholds (RH <30%, Frequent gusts >25mph, less than 1/4" of rain in 3 days).

Monday, high pressure will move overhead and maintain the dry weather. Still a dry airmass and deep mixing, but winds will be weaker, so will still need to monitor fire weather aspects, but don't think it's as significant a concern. Tuesday will still be dry, but with high pressure moving off the east coast, winds will start to turn southerly.

Guidance showing another weak front coming through Wednesday, so stuck with NBM PoPs. Rainfall amounts again will be light. Dry weather should return for Thursday.

AVIATION /05Z FRIDAY THROUGH TUESDAY/

Forecast Confidence Levels:

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

06z TAF Update...

Today...High Confidence.

VFR. SSE winds 5 to 15 knots.

Tonight and Saturday...High Confidence.

An approaching cold front will bring a period of MVFR-IFR conditions late tonight into Sat morning. This will also be accompanied by several hours of showers with a few downpours too. Most locations should see conditions improve to VFR by early Saturday afternoon...but this process may take a few hours longer towards the Cape and Islands. S winds 5 to 10 knots tonight becoming W at 10 to 15 knots by Sat afternoon. A few gusts in the 20 to 25 knot range may also develop across the interior by mid to late afternoon.

KBOS TAF...High Confidence in TAF.

KBDL TAF...High Confidence in TAF.

Outlook /Saturday Night through Tuesday/...

Saturday Night through Sunday Night: VFR. Breezy.

Monday through Monday Night: VFR.

Tuesday: VFR. Breezy.

MARINE

Forecaster Confidence Levels:

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

345pm update...

Tonight and Friday...High confidence.

Pressure gradient weakens as the wave of low pressure continues to move further southeast and away from the region. Seas will also diminish, but some 5 foot seas to linger across our southern outer- waters, extending small craft headlines in those locations through Friday late afternoon. Winds on Friday remain out of the east and less than 20 knots.

Friday Night...High confidence.

Wind direction from southeast to southwest with the passage of a frontal boundary, along with rain chances. Areas of fog is possible with reduced visibilities. Seas remain below 4 foot.

Outlook /Saturday Night through Tuesday/...

Saturday: Winds less than 25 kt. Chance of rain showers. Local visibility 1 to 3 nm.

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

Sunday through Tuesday: Winds less than 25 kt.

BOX WATCHES/WARNINGS/ADVISORIES
CT...None.
MA...None.
RI...None.
MARINE...Small Craft Advisory until 7 PM EDT this evening for ANZ255- 256.

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Nayatt Point
Click for Map
Thu -- 03:59 AM EDT     Moonset
Thu -- 04:51 AM EDT     3.95 feet High Tide
Thu -- 05:59 AM EDT     Sunrise
Thu -- 11:24 AM EDT     0.82 feet Low Tide
Thu -- 02:26 PM EDT     Moonrise
Thu -- 05:17 PM EDT     4.09 feet High Tide
Thu -- 07:30 PM EDT     Sunset
Thu -- 11:49 PM EDT     0.72 feet Low Tide
Tide / Current data from XTide NOT FOR NAVIGATION

Nayatt Point, Narragansett Bay, Rhode Island, Tide feet

Westport River Entrance
Click for Map
Thu -- 12:19 AM EDT     0.00 knots Slack
Thu -- 03:09 AM EDT     1.88 knots Max Flood
Thu -- 03:58 AM EDT     Moonset
Thu -- 05:20 AM EDT     -0.00 knots Slack
Thu -- 05:59 AM EDT     Sunrise
Thu -- 07:50 AM EDT     -1.85 knots Max Ebb
Thu -- 12:24 PM EDT     0.00 knots Slack
Thu -- 02:25 PM EDT     Moonrise
Thu -- 03:34 PM EDT     2.29 knots Max Flood
Thu -- 05:57 PM EDT     -0.00 knots Slack
Thu -- 07:28 PM EDT     Sunset
Thu -- 08:33 PM EDT     -1.85 knots Max Ebb
Tide / Current data from XTide NOT FOR NAVIGATION

Westport River Entrance, Massachusetts Current, knots

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