Sunrise 5:56 AM   Sunset 7:24 PM Moonrise 12:15 PM   Moonset 2:58 AM

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ANZ232 Nantucket Sound- 101 Am Edt Tue Apr 16 2024
Rest of tonight - NW winds around 5 kt. Seas around 2 ft. Wave detail: se 2 ft at 9 seconds and sw 1 ft at 5 seconds. Scattered showers. Tue - NW winds 5 to 10 kt, becoming sw in the afternoon. Seas around 2 ft. Wave detail: se 2 ft at 9 seconds and W 1 ft at 4 seconds. Tue night - W winds 5 to 10 kt, becoming N after midnight. Seas around 2 ft. Wave detail: sw 1 ft at 6 seconds and se 1 ft at 9 seconds. Wed - N winds 5 to 10 kt, becoming E in the afternoon. Seas around 2 ft in the morning, then 1 foot or less. Wave detail: sw 1 ft at 6 seconds and ne 1 ft at 8 seconds, becoming ne 1 ft at 5 seconds and S 1 ft at 6 seconds. Wed night and Thu - E winds 10 to 15 kt with gusts up to 20 kt. Seas around 2 ft. Wave detail: se 2 ft at 6 seconds. Thu night - E winds 10 to 15 kt with gusts up to 20 kt. Seas around 2 ft. Wave detail: se 2 ft at 5 seconds. A chance of showers. Fri - E winds around 10 kt with gusts up to 20 kt. Seas around 2 ft. Fri night through Sat night - W winds 10 to 15 kt with gusts up to 20 kt. Seas around 2 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 Tue Apr 16 2024
Synopsis for massachusetts and rhode island coastal waters - Dry and seasonably mild conditions continue tomorrow and Wednesday as a surface high builds across the waters. Winds will vary in direction across the waters but generally from the w/sw gusting to 25kt this afternoon and evening; lighter winds on Tuesday. Weak low pressure system could bring light could bring more light rain towards the end of the week.

FXUS61 KBOX 160536 AFDBOX

Area Forecast Discussion National Weather Service Boston/Norton MA 136 AM EDT Tue Apr 16 2024

SYNOPSIS

High pressure establishes itself over Southern New England through midweek. It will bring abundant sunshine, dry weather, seasonably mild temperatures and northwest breezes through Tuesday. Dry Wednesday through at least mid-day Thursday before more unsettled conditions develop late week. Above normal temperatures return

NEAR TERM /UNTIL 6 AM THIS MORNING/

135 AM Update...

* A few showers and even a rumble of thunder for ACK end shortly * Otherwise...clearing overnight & lows upper 30s to middle 40s

A cold front/shortwave resulted in scattered showers overnight into very early this morning...mainly across RI/SE MA. There was a bit of MUCape...so we have even seen a rumble or two of thunder towards the Islands. This activity will be coming to an end over the next few hours
Otherwise
dry WNW flow behind the cold front should allow the current clouds across our southern areas to depart. So mainly clear skies & diminishing winds should allow low temps to drop into the upper 30s to the middle 40s by daybreak.

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

Tomorrow

Very little change in the synoptic pattern tomorrow. Southern New England will continue to be positioned west of a trough axis slowly shifting east over The Atlantic Waters. This will continue to support a deep northwest flow pattern over the region. Air mass will be a bit cooler than on Monday, but efficient mixing will allow for another mild afternoon with high temps in the mid to upper 60s. Low 70s will be a bit harder to achieve. Additionally, we can probably expect some diurnal CU developing in the afternoon thanks to the steep lapse rates. Winds aloft don't look overly impressive, so would expect any gusts from boundary layer mixing to be limited to about 20 mph. Overall a pleasant spring afternoon.

Tomorrow Night

Quiet weather continues again tomorrow night. A mid-level ridge axis will build over southern New England along with surface high pressure. This should support light winds out of the north and clear skies allowing for efficient radiational cooling. Temperatures could dip to freezing across interior/northwest MA with upper 30s to low 40s likely elsewhere.

LONG TERM /WEDNESDAY NIGHT THROUGH MONDAY/

Long term

Wednesday

Axis of a shortwave ridge aloft moves over the region with a shortwave trough right on its tail. A mainly dry column on Wednesday will keep precip associated with the shortwave out until late Wednesday night. The shortwave will bring high clouds and filtered sunshine to region Wednesday. This will keep high temps down a bit compared to Tuesday only reaching the low to mid 60s inland, and low to mid 50s along the immediate coastlines.

Thursday

Shortwave ridge moves north, while the shortwave trough breaks down, but still sends some cyclonic vorticity into the region. Mid and upper level moisture increases late Wednesday into Thursday.
However, PWATS will be on the low side topping out near 0.8 to 0.9 inches. With weak forcing and low level dry air, probabilities for greater then 0.1 inches of rain from the LREF is less then 50%. With cloud cover and wet conditions around, High temperature only top into the low 50s region wide esspically with onshore flow. Winds Thursday will be on the blustery side with easterly wind gusts of 15- 20mph.

Friday

Latest model guidance is trending drier for the end of the work week with another shortwave ridge moving through along with drying mid levels. Even though the chance for rain is decreasing, clouds will continue to be around with more high level cirrus moving in ahead of a closed trough over the Great Lakes, and some low to mid level diurnal stratocumulus. Highs top out in the upper 50s with low 60s possible. Winds remain a bit gusty out of the south at 10-15mph.

Saturday and Sunday:

Forecast confidence for next weekend is quite low right now with large timing differences among model guidance. The upper level closed low over the Great Lakes looks to weaken as it moves east towards the region. This could bring a cold front and isolated showers to the region, however, not every source of guidance is in agreement that the cold front will actually make it into SNE. Stuck with the NBM which gives 30-40% POP's for Saturday and 10-20% for Sunday. As for temps over the weekend, highs rebound back into the low to mid 60s, but will likely end up on the lower side if rain ends up falling during the daytime hours.

AVIATION /05Z TUESDAY THROUGH SATURDAY/

Forecast Confidence Levels:

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

06z TAF Update...

Today...High Confidence.

A few lingering showers very early this morning across RI/SE MA with even a rumble of thunder towards Nantucket will be coming to an end shortly
Otherwise
VFR today with NW winds increasing to between 8 and 13 knots with a few gusts over 20 knots developing by early afternoon.

Tonight...High Confidence.

VFR. Calm/light NNW winds.

Wednesday...High Confidence.

VFR. Light N winds becoming variable and remaining light during the afternoon inland, while sea breezes develop around 10 knots along the coast.

KBOS TAF...High confidence in TAF.

KBDL TAF...High confidence in TAF.

Outlook /Wednesday Night through Saturday/...

Wednesday Night: VFR. Chance SHRA.

Thursday through Thursday Night: VFR. Breezy. Chance SHRA.

Friday: Mainly VFR, with local MVFR possible. Slight chance SHRA.

Friday Night: Mainly VFR, with local MVFR possible. Chance SHRA.

Saturday: VFR. Breezy. Chance SHRA.

MARINE

Forecaster Confidence Levels:

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

Tonight through tomorrow night

High pressure begins to work its way over the coastal waters tonight through mid-week. This will support subsiding seas and diminishing winds across the coastal waters through tomorrow night. Light west/northwest winds tonight and tomorrow will become light out of the north tomorrow night. Seas fall below SCY criteria over the coastal waters after midnight.

Outlook /Wednesday Night through Saturday/...

Wednesday: Winds less than 25 kt.

Wednesday Night: Winds less than 25 kt. Chance of rain showers.

Thursday: Winds less than 25 kt. Seas locally approaching 5 ft.
Chance of rain showers.

Thursday Night through Friday: Winds less than 25 kt. Areas of seas approaching 5 ft. Slight chance of rain showers.

Friday Night through Saturday: Winds less than 25 kt. Areas of seas approaching 5 ft. Chance of rain showers.

BOX WATCHES/WARNINGS/ADVISORIES
CT...None.
MA...None.
RI...None.
MARINE...Small Craft Advisory until 2 AM EDT early this morning for ANZ254>256.

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Eel Point
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Mon -- 02:20 AM EDT     Moonset
Mon -- 05:40 AM EDT     2.34 feet High Tide
Mon -- 06:00 AM EDT     Sunrise
Mon -- 11:09 AM EDT     Moonrise
Mon -- 11:39 AM EDT     0.20 feet Low Tide
Mon -- 03:14 PM EDT     First Quarter
Mon -- 06:32 PM EDT     2.00 feet High Tide
Mon -- 07:21 PM EDT     Sunset
Mon -- 11:51 PM EDT     0.48 feet Low Tide
Tide / Current data from XTide NOT FOR NAVIGATION

Eel Point, Nantucket Island, Massachusetts, Tide feet

Nantucket Harbor Entrance Channel
Click for Map
Mon -- 12:06 AM EDT     0.00 knots Slack
Mon -- 01:47 AM EDT     0.80 knots Max Flood
Mon -- 02:19 AM EDT     Moonset
Mon -- 04:24 AM EDT     -0.00 knots Slack
Mon -- 06:00 AM EDT     Sunrise
Mon -- 10:12 AM EDT     -1.27 knots Max Ebb
Mon -- 11:08 AM EDT     Moonrise
Mon -- 12:25 PM EDT     0.00 knots Slack
Mon -- 02:17 PM EDT     0.96 knots Max Flood
Mon -- 03:14 PM EDT     First Quarter
Mon -- 07:21 PM EDT     Sunset
Mon -- 07:28 PM EDT     -0.00 knots Slack
Mon -- 10:48 PM EDT     -1.30 knots Max Ebb
Tide / Current data from XTide NOT FOR NAVIGATION

Nantucket Harbor Entrance Channel, Massachusetts Current, knots

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