Marine Weather and Tide Forecast for Northampton, MA
May 17, 2024 2:18 PM EDT (18:18 UTC) Change Location
 | Sunrise 5:24 AM Sunset 8:09 PM Moonrise 2:24 PM Moonset 2:51 AM |
ANZ330 Long Island Sound East Of New Haven Ct/port Jefferson Ny- 600 Am Edt Tue Mar 30 2021
Today - E winds around 5 kt, becoming S late this morning and afternoon. Seas 1 ft or less.
Tonight - S winds around 10 kt. Seas 1 to 2 ft.
Wed - S winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 3 ft. Chance of showers in the morning, then chance of rain in the afternoon.
Wed night - S winds 10 to 15 kt with gusts up to 25 kt. Seas 2 to 4 ft. Rain. Vsby 1 to 3 nm.
Thu - W winds 10 to 15 kt with gusts up to 25 kt. Seas 3 to 5 ft. Showers.
Thu night - NW winds 15 to 20 kt with gusts up to 30 kt. Seas 3 to 5 ft.
Fri - NW winds 15 to 20 kt with gusts up to 25 kt. Seas 2 to 4 ft.
Fri night - NW winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 3 ft.
Sat - W winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 3 ft.
Sat night - SW winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 3 ft.
ANZ300 1256 Pm Edt Fri May 17 2024
Synopsis for the long island and connecticut coastal waters - Weak high pressure builds in from northern new england through tonight. High pressure generally remains in control through the middle of next week, gradually giving way to an approaching cold front.
FXUS61 KBOX 171122 AFDBOX
Area Forecast Discussion National Weather Service Boston/Norton MA 722 AM EDT Fri May 17 2024
SYNOPSIS
Mild across the interior today but increasing clouds and onshore winds will keep temperatures cool across eastern MA and RI.
Seasonable with scattered showers on Saturday. We are then looking at a prolonged spell of dry weather with warming temperatures starting Sunday and continuing through Wednesday.
High temperatures could approach the mid 80s by Tuesday and/or Wednesday in interior Southern New England, with temperatures in the 70s near the coasts. Our next chance for rains doesn't appear until around Thursday.
NEAR TERM /UNTIL 6 PM THIS EVENING/
705 AM Update:
Cloud cover this morning is something of a mixed bag. Most persistent overcast continues along the southern roughly third of Southern New England, from northern Hartford County eastward through central Bristol County in MA and into South Shore.
However, we've seen returning shallow moisture on NNE/ENE flow into eastern and east-central MA. This latter area of clouds seems best handled by the RAP model RH profiles, and indicates this layer of moisture is a lot more shallow than the more concentrated cloud layer in CT-RI and portions of SE MA. So we think the cloud cover in eastern MA should scatter or lift out by mid to late morning as heating gets going, but will take a little while longer the further south one goes. Will see increasing NE breezes today too. All in all, variable amounts of cloud cover but should trend partly to mostly sunny near and north of the Mass Pike, with overcast during the morning to early afternoon along the south coast, but we should see some breaks in cloud cover even if those locations don't go fully clear. No changes to highs which still look on track.
Previous discussion:
Portions of far southern New England remain under the northern fringes of the stratus deck associated with low pressure well south of the region this morning which has allowed light rain showers to filter over the Cape and Islands over the last several hours. In contrast, the interior, mainly north of the Providence to Hartford line has been persistently clear, thus, radiation fog has been able to form in locations where dewpoints have dropped below ~50F (Fitchburg, Orange, BAF Airfield). The expectation for today is that low pressure will continue to drift south as mid level ridging nudges in from the southwest, allowing for a period of sunshine this morning north and west of the I-95 corridor. Areas that are able to capitalize on a few hours of sunshine will be able to mix to ~850mb where temps hover around 8C.
Cloud cover and wind direction will have a significant influence on temperatures today, with 925mb jet holding strong over SE MA and RI, where winds will continue to gust to as high as 20kt this afternoon from the NE. So, while places in the Connecticut River Valley will warm quickly into the 70s, a significant temperature gradient will develop with areas east of approx. Worcester warming into the mid 60s this morning before synoptic flow drops temperatures into the low 60s and 50s along the immediate coastline late this afternoon.
This, "synoptic seabreeze" may extend as far inland as the I-495 corridor prior to sunset. Onshore flow will also influence the development of afternoon cloudiness.
SHORT TERM /6 PM THIS EVENING THROUGH 6 PM SATURDAY/
Weak shortwave will rotate around a low centered over northern Quebec/Ontario on Saturday as low pressure south of the region pivots ever so slightly north back towards SNE. The combined influence of the shortwave as well as some convergence from onshore flow will result in scattered shower activity very late tonight through the day on Saturday. Showers will be most widespread across eastern MA and RI but even so, not expecting a washout of a day. The NAM is the most bullish of guidance hinting at the potential for up to an inch and a half of rain to fall across far northeastern MA over the period ending 00Z Sunday, but a check of the 24 QPF HRRR PMM paints a much more moderate solution with localized max QPF of around a half of an inch in Essex and northern Middlesex counties.
The temperature forecast is proving to be quite tricky for Saturday, with the wetter, cloudier guidance, such as the NAM, really leaning into onshore flow to drive highs down into the mid to upper 50s region wide! In contrast to the NAM, most other guidance depicts widespread highs in the 60s away from the immediate coastline. Given the high level of uncertainty regarding temps tomorrow afternoon, relied heavily on "consensus" guidance to derive high temperatures.
With widespread cloudiness, mixing will be limited, but should some portions of the CT River Valley be able to break out into brief period of sunshine, could see temps warm into the upper 60s in places like downtown Hartford and Windsor Locks.
LONG TERM /SATURDAY NIGHT THROUGH THURSDAY/
Highlights:
* Significant warmup toward late-spring/early-summerlike temperatures as we move into the early to midweek period. Likely to see Tue and Wed reach into the lower to mid 80s inland!
* Outside of diminishing spotty showers early Saturday evening, mainly dry weather is expected with high pressure dominating.
Details:
Though we could still be dealing with hit or miss showers over eastern and northeast MA early Saturday evening, the forecast continues to trend more optimistically with decreasing cloudiness starting on Sunday. Expect cooler temps again near the coasts as onshore flow continues, with highs in the lower to mid 60s; while further inland, highs should push well into the 60s to the lower/mid 70s.
The main story for the early to midweek portion of the forecast is a warming trend toward late-spring/early-summerlike temperatures accompanied by dry weather, as 500 mb heights rise over Southern New England. 850 mb temps will also be steadily rising to values around +11 to +13C by Tuesday, and around +12 to +14 C by Wednesday. Warmup begins in earnest on Monday, with highs reaching into the 70s with perhaps a spot 80 degree reading in the CT and Merrimack Valleys.
Some concern for cooling seabreezes near the immediate coast and kept temps for both coasts in the mid 60s to around 70. Warmest days in the stretch look to be both Tuesday and Wednesday with high pressure to our south promoting a strengthening SW pressure gradient. Several days of antecedent dry weather would also tend to favor warmer temps. That would keep the sea breeze from making any landward inroads and allow for warm temperatures to make it all the way to the eastern coast with little resistance. Outside of Cape Cod where highs still only around the mid to upper 60s, temps on Tuesday and Wednesday should soar well into the 70s for most, with lower to mid 80s in the CT/Merrimack Valleys.
This period is overall a dry one outside of spotty rain showers early Saturday evening. We may not see our next chance for rains until around Thursday as a cold front approaches from the west, but this is by no means set in stone.
AVIATION /11Z FRIDAY THROUGH TUESDAY/
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, though moderate on timing.
Most concentrated area of MVFR-IFR cloud bases for the Cape and Islands, with more of a SCT-OVC VFR deck north. We should see scattering/lifting of cloud bases starting as soon as mid morning in northern/northeast MA and around late morning for PVD/BDL, but will be delayed if it scatters at all over the South Coast/Cape and Islands. NE winds between 5-10 kt.
Friday Night... Moderate Confidence
VFR, away from the Cape and Islands where MVFR persists, to start before patchy fog development drives categories down to locally IFR. Persistent E/NE flow.
Saturday... Moderate Confidence
VFR across the CT River Valley with MVFR for eastern MA RI Saturday morning falling to MVFR/IFR during the afternoon as showers develop mid day. Onshore flow will drive cigs to as low as 003ft along the coast. Winds 5 to 15kt.
KBOS TAF...Moderate confidence in TAF. BKN/OVC VFR bases around 040 thru about 14z, then start to scatter and lift. MVFR to perhaps IFR develops overnight with stratus and perhaps BR.
Showers possible by early Saturday morning. NE winds around 10 kt.
KBDL TAF...High confidence in TAF. SCT-BKN VFR bases, though will trend more SCT by early aftn. N/NE winds today, generally less than 10kt.
Outlook /Saturday Night through Tuesday/...
Saturday Night: Mainly VFR, with local IFR possible.
Sunday: Mainly VFR, with local MVFR possible.
Sunday Night through Tuesday: VFR.
MARINE
Forecaster Confidence Levels:
Low - less than 30 percent.
Medium - 30 to 60 percent.
High - greater than 60 percent.
3AM Update... Extended SCA for outer waters through 00-06Z Sunday
Today... High Confidence.
Any pockets of fog burning off by mid to late Fri AM. E/ENE winds 15-20 kt with 20-25 kt gusts. Seas remain elevated across the outer waters, so the SCA remains.
Tonight...High confidence.
Winds remain out of the NE at 10-20 kts. Could see a return of stratus/fog across the waters late. Visibilities of 1-4 SM with the lowest across the eastern waters. Seas remain elevated so have extended the SCA through the period.
Saturday... High Confidence
Scattered showers with persistent E/NE flow. Gusts to around 15kt. Seas gradually subsiding but remain above 5ft across the outer waters, thus, extended SCA through Saturday evening.
Outlook /Saturday Night through Tuesday/...
Saturday Night through Monday: Winds less than 25 kt. Seas up to 5 ft.
Monday Night: Winds less than 25 kt. Areas of seas approaching 5 ft.
Tuesday: Winds less than 25 kt. Seas locally approaching 5 ft.
BOX WATCHES/WARNINGS/ADVISORIES
CT...None.
MA...None.
RI...None.
MARINE...Small Craft Advisory until 2 AM EDT Sunday for ANZ250-254.
Small Craft Advisory until 8 PM EDT Saturday for ANZ255-256.
Area Forecast Discussion National Weather Service Boston/Norton MA 722 AM EDT Fri May 17 2024
SYNOPSIS
Mild across the interior today but increasing clouds and onshore winds will keep temperatures cool across eastern MA and RI.
Seasonable with scattered showers on Saturday. We are then looking at a prolonged spell of dry weather with warming temperatures starting Sunday and continuing through Wednesday.
High temperatures could approach the mid 80s by Tuesday and/or Wednesday in interior Southern New England, with temperatures in the 70s near the coasts. Our next chance for rains doesn't appear until around Thursday.
NEAR TERM /UNTIL 6 PM THIS EVENING/
705 AM Update:
Cloud cover this morning is something of a mixed bag. Most persistent overcast continues along the southern roughly third of Southern New England, from northern Hartford County eastward through central Bristol County in MA and into South Shore.
However, we've seen returning shallow moisture on NNE/ENE flow into eastern and east-central MA. This latter area of clouds seems best handled by the RAP model RH profiles, and indicates this layer of moisture is a lot more shallow than the more concentrated cloud layer in CT-RI and portions of SE MA. So we think the cloud cover in eastern MA should scatter or lift out by mid to late morning as heating gets going, but will take a little while longer the further south one goes. Will see increasing NE breezes today too. All in all, variable amounts of cloud cover but should trend partly to mostly sunny near and north of the Mass Pike, with overcast during the morning to early afternoon along the south coast, but we should see some breaks in cloud cover even if those locations don't go fully clear. No changes to highs which still look on track.
Previous discussion:
Portions of far southern New England remain under the northern fringes of the stratus deck associated with low pressure well south of the region this morning which has allowed light rain showers to filter over the Cape and Islands over the last several hours. In contrast, the interior, mainly north of the Providence to Hartford line has been persistently clear, thus, radiation fog has been able to form in locations where dewpoints have dropped below ~50F (Fitchburg, Orange, BAF Airfield). The expectation for today is that low pressure will continue to drift south as mid level ridging nudges in from the southwest, allowing for a period of sunshine this morning north and west of the I-95 corridor. Areas that are able to capitalize on a few hours of sunshine will be able to mix to ~850mb where temps hover around 8C.
Cloud cover and wind direction will have a significant influence on temperatures today, with 925mb jet holding strong over SE MA and RI, where winds will continue to gust to as high as 20kt this afternoon from the NE. So, while places in the Connecticut River Valley will warm quickly into the 70s, a significant temperature gradient will develop with areas east of approx. Worcester warming into the mid 60s this morning before synoptic flow drops temperatures into the low 60s and 50s along the immediate coastline late this afternoon.
This, "synoptic seabreeze" may extend as far inland as the I-495 corridor prior to sunset. Onshore flow will also influence the development of afternoon cloudiness.
SHORT TERM /6 PM THIS EVENING THROUGH 6 PM SATURDAY/
Weak shortwave will rotate around a low centered over northern Quebec/Ontario on Saturday as low pressure south of the region pivots ever so slightly north back towards SNE. The combined influence of the shortwave as well as some convergence from onshore flow will result in scattered shower activity very late tonight through the day on Saturday. Showers will be most widespread across eastern MA and RI but even so, not expecting a washout of a day. The NAM is the most bullish of guidance hinting at the potential for up to an inch and a half of rain to fall across far northeastern MA over the period ending 00Z Sunday, but a check of the 24 QPF HRRR PMM paints a much more moderate solution with localized max QPF of around a half of an inch in Essex and northern Middlesex counties.
The temperature forecast is proving to be quite tricky for Saturday, with the wetter, cloudier guidance, such as the NAM, really leaning into onshore flow to drive highs down into the mid to upper 50s region wide! In contrast to the NAM, most other guidance depicts widespread highs in the 60s away from the immediate coastline. Given the high level of uncertainty regarding temps tomorrow afternoon, relied heavily on "consensus" guidance to derive high temperatures.
With widespread cloudiness, mixing will be limited, but should some portions of the CT River Valley be able to break out into brief period of sunshine, could see temps warm into the upper 60s in places like downtown Hartford and Windsor Locks.
LONG TERM /SATURDAY NIGHT THROUGH THURSDAY/
Highlights:
* Significant warmup toward late-spring/early-summerlike temperatures as we move into the early to midweek period. Likely to see Tue and Wed reach into the lower to mid 80s inland!
* Outside of diminishing spotty showers early Saturday evening, mainly dry weather is expected with high pressure dominating.
Details:
Though we could still be dealing with hit or miss showers over eastern and northeast MA early Saturday evening, the forecast continues to trend more optimistically with decreasing cloudiness starting on Sunday. Expect cooler temps again near the coasts as onshore flow continues, with highs in the lower to mid 60s; while further inland, highs should push well into the 60s to the lower/mid 70s.
The main story for the early to midweek portion of the forecast is a warming trend toward late-spring/early-summerlike temperatures accompanied by dry weather, as 500 mb heights rise over Southern New England. 850 mb temps will also be steadily rising to values around +11 to +13C by Tuesday, and around +12 to +14 C by Wednesday. Warmup begins in earnest on Monday, with highs reaching into the 70s with perhaps a spot 80 degree reading in the CT and Merrimack Valleys.
Some concern for cooling seabreezes near the immediate coast and kept temps for both coasts in the mid 60s to around 70. Warmest days in the stretch look to be both Tuesday and Wednesday with high pressure to our south promoting a strengthening SW pressure gradient. Several days of antecedent dry weather would also tend to favor warmer temps. That would keep the sea breeze from making any landward inroads and allow for warm temperatures to make it all the way to the eastern coast with little resistance. Outside of Cape Cod where highs still only around the mid to upper 60s, temps on Tuesday and Wednesday should soar well into the 70s for most, with lower to mid 80s in the CT/Merrimack Valleys.
This period is overall a dry one outside of spotty rain showers early Saturday evening. We may not see our next chance for rains until around Thursday as a cold front approaches from the west, but this is by no means set in stone.
AVIATION /11Z FRIDAY THROUGH TUESDAY/
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, though moderate on timing.
Most concentrated area of MVFR-IFR cloud bases for the Cape and Islands, with more of a SCT-OVC VFR deck north. We should see scattering/lifting of cloud bases starting as soon as mid morning in northern/northeast MA and around late morning for PVD/BDL, but will be delayed if it scatters at all over the South Coast/Cape and Islands. NE winds between 5-10 kt.
Friday Night... Moderate Confidence
VFR, away from the Cape and Islands where MVFR persists, to start before patchy fog development drives categories down to locally IFR. Persistent E/NE flow.
Saturday... Moderate Confidence
VFR across the CT River Valley with MVFR for eastern MA RI Saturday morning falling to MVFR/IFR during the afternoon as showers develop mid day. Onshore flow will drive cigs to as low as 003ft along the coast. Winds 5 to 15kt.
KBOS TAF...Moderate confidence in TAF. BKN/OVC VFR bases around 040 thru about 14z, then start to scatter and lift. MVFR to perhaps IFR develops overnight with stratus and perhaps BR.
Showers possible by early Saturday morning. NE winds around 10 kt.
KBDL TAF...High confidence in TAF. SCT-BKN VFR bases, though will trend more SCT by early aftn. N/NE winds today, generally less than 10kt.
Outlook /Saturday Night through Tuesday/...
Saturday Night: Mainly VFR, with local IFR possible.
Sunday: Mainly VFR, with local MVFR possible.
Sunday Night through Tuesday: VFR.
MARINE
Forecaster Confidence Levels:
Low - less than 30 percent.
Medium - 30 to 60 percent.
High - greater than 60 percent.
3AM Update... Extended SCA for outer waters through 00-06Z Sunday
Today... High Confidence.
Any pockets of fog burning off by mid to late Fri AM. E/ENE winds 15-20 kt with 20-25 kt gusts. Seas remain elevated across the outer waters, so the SCA remains.
Tonight...High confidence.
Winds remain out of the NE at 10-20 kts. Could see a return of stratus/fog across the waters late. Visibilities of 1-4 SM with the lowest across the eastern waters. Seas remain elevated so have extended the SCA through the period.
Saturday... High Confidence
Scattered showers with persistent E/NE flow. Gusts to around 15kt. Seas gradually subsiding but remain above 5ft across the outer waters, thus, extended SCA through Saturday evening.
Outlook /Saturday Night through Tuesday/...
Saturday Night through Monday: Winds less than 25 kt. Seas up to 5 ft.
Monday Night: Winds less than 25 kt. Areas of seas approaching 5 ft.
Tuesday: Winds less than 25 kt. Seas locally approaching 5 ft.
BOX WATCHES/WARNINGS/ADVISORIES
CT...None.
MA...None.
RI...None.
MARINE...Small Craft Advisory until 2 AM EDT Sunday for ANZ250-254.
Small Craft Advisory until 8 PM EDT Saturday for ANZ255-256.
toggle option: (graph/table)
| Airport | Dist | Age | Wind kt | Vis | Sky | Weather | Temp | DewPt | RH | inHg |
| KBAF WESTFIELDBARNES RGNL,MA | 17 sm | 25 min | ENE 07 | 10 sm | Partly Cloudy | 75°F | 54°F | 47% | 29.94 | |
| KCEF WESTOVER ARB/METROPOLITAN,MA | 21 sm | 23 min | ENE 04 | 10 sm | Mostly Cloudy | 75°F | 52°F | 44% | 29.92 | |
| KPSF PITTSFIELD MUNI,MA | 24 sm | 24 min | ENE 05 | 10 sm | Mostly Cloudy | 72°F | 54°F | 53% | 29.95 |
Tide / Current data from XTide NOT FOR NAVIGATION
Hartford, Connecticut River, Connecticut, Tide feet
Tide / Current data from XTide NOT FOR NAVIGATION
South Hartford, Connecticut River, Connecticut, Tide feet
Albany, NY,
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