Marine Weather and Tide Forecast for Portland, CT

December 4, 2023 2:41 AM EST (07:41 UTC)
Sunrise 6:59AM Sunset 4:22PM Moonrise 12:00AM Moonset 1:22PM
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.
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 1205 Am Est Mon Dec 4 2023
Synopsis for the long island and connecticut coastal waters.. Low pressure lifts north tonight as weak high pressure builds in through Tuesday, eventually giving way to an offshore low pressure system that develops on Wednesday. Weak high pressure returns for Thursday and Thursday night. This high pressure area moves offshore Friday into the start of the weekend.
Synopsis for the long island and connecticut coastal waters.. Low pressure lifts north tonight as weak high pressure builds in through Tuesday, eventually giving way to an offshore low pressure system that develops on Wednesday. Weak high pressure returns for Thursday and Thursday night. This high pressure area moves offshore Friday into the start of the weekend.

Area Discussion for - New York City/Upton, NY
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FXUS61 KOKX 040539 CCA AFDOKX
Area Forecast Discussion...CORRECTED National Weather Service New York NY 1239 AM EST Mon Dec 4 2023
SYNOPSIS
A double-barreled low pressure system, extending from the eastern Great Lakes to off the southeast New England coast will lift slowly north and east through Monday. Weak high pressure will then build in Monday night through Tuesday, eventually dissipating as low pressure develops well south and east of the area on Wednesday. Weak high pressure returns for Thursday and Thursday night. This high moves offshore Friday into the start of the weekend. A strong frontal system approaches for next Sunday.
NEAR TERM /UNTIL 6 AM THIS MORNING/
Weak ridging across the area in between surface lows to the NE and E will break down over the next few hours and a west flow will gradually strengthen across the area. Still though, with weak flow and residual low-level moisture in place, patchy fog will be around, especially across the interior. The last of any showers were exiting eastern LI/SE CT. Lows will be in the low to middle 40s.
SHORT TERM /6 AM THIS MORNING THROUGH 6 PM TUESDAY/
Weak high pressure tries to build into the area from the south but retreating low pressure is slow to move out. The area remains in the vicinity of an upper level trough which will likely continue to bring cloudy skies, despite some clearing Monday morning. While skies are expected to become overcast Monday afternoon, a lack of moisture and low level forcing will keep the area dry. Highs on Monday will be in the upper 40s to low 50s, about average for this time of year.
A northwest wind advects drier and cooler air into the area Monday night and into early Tuesday morning allowing for skies to generally clear through the night. Lows will be in the low to middle 30s Monday night into early Tuesday morning. The NYC metro may remain near 40.
LONG TERM /TUESDAY NIGHT THROUGH SUNDAY/
The jet stream going into midweek will be dipping into the Southeast US. The jet stream pattern shifts thereafter with more NW flow jet level orientation Thursday with ridging going into Friday. The ridging continues into Saturday before a more sharp trough and associated jet streak approach for next Sunday.
A colder airmass will be in place Tuesday through Thursday. The airmass then moderates and eventually gets to above normal temperatures to close out the week.
At the surface, the pressure gradient will increase towards midweek.
Low pressure develops well offshore out in the Atlantic with high pressure from SE Canada through the Great Lakes and near the Mississippi River Valley.
Models indicate a weak disturbance with some associated moisture developing in the coastal New England area early Wednesday through Wednesday evening. In the mid levels, a trough moves across with associated positive vorticity advection. This may bring some rain and/or snow showers to parts of Southeast Connecticut and Long Island. POPs are low, near 30 percent or less with much of these aforementioned sections in slight chance. Timing of precipitation will determine any localized light accumulations but with relatively higher POPs situated towards Southeast Suffolk on the South Fork, not expecting any snow accumulations with temperatures too warm. The snow showers could materialize due to wet bulb cooling.
For Thursday through Thursday night, the high pressure area to the west moves in and weakens across the region. The high pressure area eventually moves east of the area and out into the Atlantic Friday into Friday night.
Offshore high pressure Saturday will be followed by a strong frontal system approaching for next Sunday. GFS very progressive with system while ECMWF develops a more mature low west of the region.
Dry conditions expected Thursday through Saturday with a growing chance of rain for the latter half of next weekend. With models indicating more of a frontal system moving across progressively or deepening west of the area, precip type favors plain rain.
Temperatures overall will be below normal Tuesday through Thursday, near normal Friday and then getting more above normal Friday night into next weekend.
AVIATION /05Z MONDAY THROUGH FRIDAY/
One low pressure slowly lifts to the northeast early this morning as a weaker low moves offshore. Low pressure lingers over New England on Monday as high pressure slowly builds in from the west.
Flight categories will begin improving early this morning to MVFR and then VFR shortly thereafter. VFR is expected to prevail at most terminals after 09-10z. Any lingering light rain or drizzle will end by 08z across eastern Long Island and southeast Connecticut.
Winds will continue to shift to the west early this morning.
Wind speeds will gradually increase through the morning, becoming 10- 15 kt by afternoon. Gusts 17-20 kt are possible in the afternoon.
Winds shift to the WNW Monday night around 10 kt or less.
...NY Metro(KEWR/KLGA/KJFK/KTEB) TAF Uncertainty...
Timing of improving flight categories may be off by 1-2 hours.
Gusts may be occasional Monday afternoon.
OUTLOOK FOR 06Z TUESDAY THROUGH FRIDAY...
Monday Night-Tuesday VFR.
Wednesday: Mainly VFR. N-NW winds G15-20kt afternoon into night near the coast.
Thursday-Friday: VFR.
Detailed information, including hourly TAF wind component forecasts, can be found at: https:/ www.weather.gov/zny/n90
MARINE
Small Craft Advisory continues for the ocean zones through Monday afternoon. Winds may drop off here for a bit initially, but then come back up to 25-30 kt gusts late tonight and into Monday morning. Additionally, waves heights will be at or just above 5 feet. Winds and waves gradually subside from east to west on Monday which may allow for the SCA to be dropped accordingly. Widespread SCA thresholds should largely be missed with an occasional gust to 25kt not out of the question for Monday afternoon through Tuesday morning.
Any lingering near-SCA gusts are forecast to lower to below SCA thresholds Tuesday afternoon. Then sub-SCA for all waters for Tuesday night. Non-ocean waters stay below SCA for Wednesday and Wednesday night but ocean is forecast to have some SCA level gusts near 25 kt. Mainly below SCA conditions forecast for all waters Thursday through Friday. SCA conditions become more probable for ocean waters Friday night.
HYDROLOGY
No hydrologic impacts expected through the end of the week.
OKX WATCHES/WARNINGS/ADVISORIES
CT...None.
NY...None.
NJ...None.
MARINE...Small Craft Advisory until 6 PM EST this evening for ANZ350- 353.
Small Craft Advisory until 4 PM EST this afternoon for ANZ355.
Area Forecast Discussion...CORRECTED National Weather Service New York NY 1239 AM EST Mon Dec 4 2023
SYNOPSIS
A double-barreled low pressure system, extending from the eastern Great Lakes to off the southeast New England coast will lift slowly north and east through Monday. Weak high pressure will then build in Monday night through Tuesday, eventually dissipating as low pressure develops well south and east of the area on Wednesday. Weak high pressure returns for Thursday and Thursday night. This high moves offshore Friday into the start of the weekend. A strong frontal system approaches for next Sunday.
NEAR TERM /UNTIL 6 AM THIS MORNING/
Weak ridging across the area in between surface lows to the NE and E will break down over the next few hours and a west flow will gradually strengthen across the area. Still though, with weak flow and residual low-level moisture in place, patchy fog will be around, especially across the interior. The last of any showers were exiting eastern LI/SE CT. Lows will be in the low to middle 40s.
SHORT TERM /6 AM THIS MORNING THROUGH 6 PM TUESDAY/
Weak high pressure tries to build into the area from the south but retreating low pressure is slow to move out. The area remains in the vicinity of an upper level trough which will likely continue to bring cloudy skies, despite some clearing Monday morning. While skies are expected to become overcast Monday afternoon, a lack of moisture and low level forcing will keep the area dry. Highs on Monday will be in the upper 40s to low 50s, about average for this time of year.
A northwest wind advects drier and cooler air into the area Monday night and into early Tuesday morning allowing for skies to generally clear through the night. Lows will be in the low to middle 30s Monday night into early Tuesday morning. The NYC metro may remain near 40.
LONG TERM /TUESDAY NIGHT THROUGH SUNDAY/
The jet stream going into midweek will be dipping into the Southeast US. The jet stream pattern shifts thereafter with more NW flow jet level orientation Thursday with ridging going into Friday. The ridging continues into Saturday before a more sharp trough and associated jet streak approach for next Sunday.
A colder airmass will be in place Tuesday through Thursday. The airmass then moderates and eventually gets to above normal temperatures to close out the week.
At the surface, the pressure gradient will increase towards midweek.
Low pressure develops well offshore out in the Atlantic with high pressure from SE Canada through the Great Lakes and near the Mississippi River Valley.
Models indicate a weak disturbance with some associated moisture developing in the coastal New England area early Wednesday through Wednesday evening. In the mid levels, a trough moves across with associated positive vorticity advection. This may bring some rain and/or snow showers to parts of Southeast Connecticut and Long Island. POPs are low, near 30 percent or less with much of these aforementioned sections in slight chance. Timing of precipitation will determine any localized light accumulations but with relatively higher POPs situated towards Southeast Suffolk on the South Fork, not expecting any snow accumulations with temperatures too warm. The snow showers could materialize due to wet bulb cooling.
For Thursday through Thursday night, the high pressure area to the west moves in and weakens across the region. The high pressure area eventually moves east of the area and out into the Atlantic Friday into Friday night.
Offshore high pressure Saturday will be followed by a strong frontal system approaching for next Sunday. GFS very progressive with system while ECMWF develops a more mature low west of the region.
Dry conditions expected Thursday through Saturday with a growing chance of rain for the latter half of next weekend. With models indicating more of a frontal system moving across progressively or deepening west of the area, precip type favors plain rain.
Temperatures overall will be below normal Tuesday through Thursday, near normal Friday and then getting more above normal Friday night into next weekend.
AVIATION /05Z MONDAY THROUGH FRIDAY/
One low pressure slowly lifts to the northeast early this morning as a weaker low moves offshore. Low pressure lingers over New England on Monday as high pressure slowly builds in from the west.
Flight categories will begin improving early this morning to MVFR and then VFR shortly thereafter. VFR is expected to prevail at most terminals after 09-10z. Any lingering light rain or drizzle will end by 08z across eastern Long Island and southeast Connecticut.
Winds will continue to shift to the west early this morning.
Wind speeds will gradually increase through the morning, becoming 10- 15 kt by afternoon. Gusts 17-20 kt are possible in the afternoon.
Winds shift to the WNW Monday night around 10 kt or less.
...NY Metro(KEWR/KLGA/KJFK/KTEB) TAF Uncertainty...
Timing of improving flight categories may be off by 1-2 hours.
Gusts may be occasional Monday afternoon.
OUTLOOK FOR 06Z TUESDAY THROUGH FRIDAY...
Monday Night-Tuesday VFR.
Wednesday: Mainly VFR. N-NW winds G15-20kt afternoon into night near the coast.
Thursday-Friday: VFR.
Detailed information, including hourly TAF wind component forecasts, can be found at: https:/ www.weather.gov/zny/n90
MARINE
Small Craft Advisory continues for the ocean zones through Monday afternoon. Winds may drop off here for a bit initially, but then come back up to 25-30 kt gusts late tonight and into Monday morning. Additionally, waves heights will be at or just above 5 feet. Winds and waves gradually subside from east to west on Monday which may allow for the SCA to be dropped accordingly. Widespread SCA thresholds should largely be missed with an occasional gust to 25kt not out of the question for Monday afternoon through Tuesday morning.
Any lingering near-SCA gusts are forecast to lower to below SCA thresholds Tuesday afternoon. Then sub-SCA for all waters for Tuesday night. Non-ocean waters stay below SCA for Wednesday and Wednesday night but ocean is forecast to have some SCA level gusts near 25 kt. Mainly below SCA conditions forecast for all waters Thursday through Friday. SCA conditions become more probable for ocean waters Friday night.
HYDROLOGY
No hydrologic impacts expected through the end of the week.
OKX WATCHES/WARNINGS/ADVISORIES
CT...None.
NY...None.
NJ...None.
MARINE...Small Craft Advisory until 6 PM EST this evening for ANZ350- 353.
Small Craft Advisory until 4 PM EST this afternoon for ANZ355.
Stations | Dist | Age | Wind | Air Temp | Water Temp | Waves | inHg | DewPt |
NWHC3 - 8465705 - New Haven, CT | 24 mi | 72 min | NNE 2.9G | 42°F | 47°F | 29.68 | ||
NLHC3 | 31 mi | 72 min | 43°F | 52°F | 29.64 | |||
LDLC3 - New London Ledge CT - Ledge Light Weather | 34 mi | 42 min | NNW 7G | 44°F | ||||
BRHC3 - 8467150 - Bridgeport, CT | 40 mi | 72 min | WSW 1G | 43°F | 49°F | 29.62 |
toggle option: (graph/table)
Airport Reports
EDIT (on/off)  Help Click EDIT to display multiple airports. Follow links for more data.Airport | Dist | Age | Wind kt | Vis | Sky | Weather | Temp | DewPt | RH | inHg |
KMMK MERIDEN MARKHAM MUNI,CT | 11 sm | 16 min | calm | 1/2 sm | Overcast | Fog | 36°F | 34°F | 93% | 29.66 |
KHFD HARTFORDBRAINARD,CT | 12 sm | 28 min | NNE 04 | 10 sm | Overcast | 39°F | 37°F | 93% | 29.66 | |
KSNC CHESTER,CT | 14 sm | 26 min | NW 04 | 1/2 sm | Overcast | Mist | 39°F | 39°F | 100% | 29.65 |
Wind History from MMK
(wind in knots)Portland
Click for Map
Sun -- 12:01 AM EST 0.27 feet Low Tide
Sun -- 05:22 AM EST 1.88 feet High Tide
Sun -- 06:59 AM EST Sunrise
Sun -- 11:59 AM EST Moonset
Sun -- 12:17 PM EST 0.63 feet Low Tide
Sun -- 04:20 PM EST Sunset
Sun -- 05:25 PM EST 2.07 feet High Tide
Sun -- 10:16 PM EST Moonrise
Tide / Current data from XTide NOT FOR NAVIGATION
Click for Map
Sun -- 12:01 AM EST 0.27 feet Low Tide
Sun -- 05:22 AM EST 1.88 feet High Tide
Sun -- 06:59 AM EST Sunrise
Sun -- 11:59 AM EST Moonset
Sun -- 12:17 PM EST 0.63 feet Low Tide
Sun -- 04:20 PM EST Sunset
Sun -- 05:25 PM EST 2.07 feet High Tide
Sun -- 10:16 PM EST Moonrise
Tide / Current data from XTide NOT FOR NAVIGATION
Portland, Connecticut, Tide feet
12 am |
0.3 |
1 am |
0.5 |
2 am |
0.9 |
3 am |
1.3 |
4 am |
1.7 |
5 am |
1.9 |
6 am |
1.8 |
7 am |
1.7 |
8 am |
1.5 |
9 am |
1.3 |
10 am |
1.1 |
11 am |
0.8 |
12 pm |
0.6 |
1 pm |
0.7 |
2 pm |
1.1 |
3 pm |
1.5 |
4 pm |
1.9 |
5 pm |
2 |
6 pm |
2 |
7 pm |
1.9 |
8 pm |
1.6 |
9 pm |
1.3 |
10 pm |
1 |
11 pm |
0.7 |
Tide / Current data from XTide NOT FOR NAVIGATION
Higganum Creek, Connecticut River, Connecticut, Tide feet
Upton, NY,

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