Portland, PA Marine Weather and Tide Forecast

Marine Weather and Tide Forecast for Portland, PA

December 11, 2023 1:28 AM EST (06:28 UTC)
Sunrise 7:13AM   Sunset 4:35PM   Moonrise  5:56AM   Moonset 3:15PM 

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Marine Forecasts
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ANZ338 NEw York Harbor- 942 Pm Est Sun Dec 10 2023
.gale warning in effect through Monday afternoon...
Tonight..S winds 20 to 25 kt, becoming nw 15 to 20 kt after midnight, then increasing to 20 to 25 kt late with gusts up to 35 kt. Waves 2 to 4 ft. Isolated tstms. Rain. Vsby 1 to 3 nm.
Mon..NW winds 20 to 25 kt with gusts up to 35 kt. Waves 2 to 4 ft. Showers likely in the morning.
Mon night..W winds 20 to 25 kt, diminishing to 10 to 15 kt after midnight. Waves 2 to 3 ft.
Tue..W winds 10 to 15 kt, becoming sw 15 to 20 kt in the afternoon. Waves 2 to 3 ft.
Tue night..SW winds 15 to 20 kt with gusts up to 25 kt. Waves 2 to 3 ft.
Wed..W winds 15 to 20 kt. Waves 2 to 3 ft.
Wed night..NW winds 10 to 15 kt with gusts up to 20 kt. Waves around 2 ft in the evening, then 1 ft or less.
Thu..NW winds around 10 kt with gusts up to 20 kt. Waves 1 ft or less.
Thu night..W winds around 10 kt. Waves 1 ft or less.
Fri..W winds 10 to 15 kt with gusts up to 20 kt. Waves around 2 ft.
Fri night..W winds 10 to 15 kt with gusts up to 20 kt. Waves around 2 ft.
winds and waves may be higher in and near tstms.

ANZ300 942 Pm Est Sun Dec 10 2023
Synopsis for the long island and connecticut coastal waters.. A strengthening frontal system pushes through tonight into Monday morning. The deepening low pressure along it will move away quickly into canada by Monday evening. High pressure will then build from the southwest on Monday night into Tuesday. A cold front approaches Tuesday night and passes through late Tuesday night or Wednesday morning. Another high will then build from the west for later in the week, then shift off the new england coast Saturday night.

7 Day Forecast for Marine Location Near Portland , PA
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Area Discussion for - Philadelphia/Mount Holly, PA
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Area Forecast Discussion National Weather Service Mount Holly NJ 106 AM EST Mon Dec 11 2023

A strong cold front will push offshore through today as low pressure moves into southern new England. High pressure builds in behind the low for the start of the week. A weak cold front drops though the area early Wednesday. More high pressure returns for the end of the week.

The storm system continues to work its way through the region.
Widespread rain, locally heavy, continues to impact portion of the region. The cold front has pushed offshore as of 1 AM, and low pressure will develop along the front as it departs offshore to the east. Behind the cold front, winds have shifted to the northwest and generally range from 10-20 mph with gusts near 25-30 mph at times. Winds may lessen a bit over the next few hours until near daybreak when the deeper cold advection arrives and precipitation ends, helping to increase boundary layer mixing.

Between 1 and 2 inches of rain has fallen across the region, with the heaviest rain along the I-95 corridor, and into southeast New Jersey and Delmarva. Flood Advisories are in effect for the greater Philadelphia area, and there are Flood Warnings along the New Jersey coast. Along the coast, flooding may be a combination of both heavy rain and high tide. Since rainfall has not quite been as heavy in the southern Poconos, the Lehigh Valley, and northern New Jersey, and the heaviest additional rainfall will be south and east of the I-95 corridor, will go ahead and cancel the Flood Watch for the northern zones.
Flood Watch remains up for all other areas through Monday.
Additional rainfall amounts of a half to 1 inch may occur until precip ends. Streams and creeks continue to rise across the area and slower responding main stems rivers will follow suit during the daytime Monday.

Behind the cold front, cold air advection will be underway, and temperatures will drop to freezing in the higher elevations northwest. Rain will mix with and change to snow late tonight/early Monday morning in the southern Poconos, Lehigh Valley, and northern New Jersey. Mount Pocono has already changed over to light snow as of 12:30 AM. A Winter Weather Advisory remains in effect for Carbon and Monroe counties, as 2 to 3 inches or so of snow is expected. Elsewhere, snow totals will be 1 inch or less.

Following frontal passage, high pressure behind the front will build in Monday as precipitation tapers off, but WNW winds will remain gusty through the afternoon.

Temperatures will continue to fall into the 40s tonight behind the cold front with temperatures in the 30s by daybreak Monday.
Northwest winds will become quite breezy overnight with gusts remaining near 25-35 mph as the surface low strengthens rapidly offshore.

Last, but not least, is the expected rain to snow transition on the back side of the departing system Monday morning for areas near and especially northwest of I-95. Guidance has come to a rather good consensus that some precipitation will linger across the area around daybreak to perhaps a few hours after daybreak as colder WNW flow takes over the region. Areas northwest of the I-95 urban corridor (primarily Poconos, Lehigh Valley, and northwest NJ) are expected to see a transition to a period of snow before the precipitation exits the area. This transition may occur as far south as the urban corridor Monday morning.
Accumulating snow is forecast primarily for higher elevations near and above 1,000 feet in eastern Pennsylvania and northwest New Jersey. Across the Pocono Plateau, temperatures will drop low enough to support snow accumulations of 2-3 inches with potential for amounts near 5 inches possible above 1,800 feet. A Winter Weather Advisory has been issued from midnight through noon Monday. The snowfall will likely impact the Monday morning commute in these areas.

Farther southeast and at lower elevations, temperatures will likely be too warm to support snowfall accumulation even where a transition to snow does occur. A dusting is possible into the I-78 corridor, Berks County, and western Chester County, however significant travel impacts are currently unlikely aside from a few slippery spots on the roads.

Aside from the snow potential, Monday will be a cold and blustery day with temperatures struggling to climb into the 40s. Winds will peak by late morning and early afternoon near 15-25 mph with gusts of 30-40 mph possible throughout the day. Some clearing may occur immediately following the end of the precipitation in the morning, however stratocumulus will likely develop in its wake during the afternoon. Some light snow showers may linger in the southern Poconos.

Once the system from the near term clears the area on Monday, rather tranquil weather is expected for Mon night into early Wednesday. The deep surface low near New Brunswick Monday evening will pull further NE while expanding high pressure to our southwest builds in. The will bring a period of dry weather with decreasing winds Mon night. Fair weather continue through Tue night.

Temperatures will be below normal into early Wednesday with lows Mon night in the 20s and a few degrees milder Tue night when some areas will have lows in the low 30s. Highs will favor the ow/mid 40s for Tue with readings remaining in the 30s for north NJ and the higher elevations of the Poconos.

There is not much excitement for the weather in the long term as we head into mid-December. A Northeast US upper trough remains put Wed/Thu before flattening and moving away for the Fri/Sat. A surface ridge remains across the area much of the time. A dry cold front drops across the region Wed. reinforcing the cool airmass already in place.

These factors point to a dry forecast with zero, or close to it, for Wed thru Sat. Temperatures will be near normal or perhaps a few degrees below for Wed/Thu (following the front) then temps will go above normal for Fri/Sat. We'll have high temps in the low 50s next Sat for Delmarva and south NJ while north NJ and the Poconos will have highs in the mid/upper 40s.

The following discussion is for KPHL, KPNE, KTTN, KABE, KRDG, KILG, KMIV, KACY and surrounding areas...

Tonight...Widespread rain with MVFR to IFR conditions that will begin to improve towards 12Z as precip tapers off from west to east. A period of RASN is possible at all sites outside of MIV/ACY from around 09-14Z. Northwest winds near 10-15 kt with 20-25 kt gusts. Moderate confidence.

Monday...IFR/MVFR conditions early, then VFR by 14Z to 15Z from west to east. Northwest winds 15 to 25 kt with 25 to 35 kt gusts. Moderate confidence.


Mon night... VFR. Decreasing winds during the evening.

Tue thru Friday... VFR expected. Gusty winds possible Wed.

Winds have shifted to the northwest behind a cold front that passed offshore just after midnight. Winds will then increase to 20-30 kts by daybreak, when gusts of 40-45 kts are forecast across the Atlantic waters. Winds then diminish later Monday afternoon into Monday evening. A Gale Warning remains in effect for all coastal waters.

Widespread moderate to heavy rain and perhaps some thunder will continue with visibility 1-3 NM. The rain will end by Monday morning.


Mon night...Gale flags from Mon will likely be replaced with SCA flags until seas settle. Fair weather.

Tue/Tue night/Wed... sub-SCA. Fair.

Wed night/Thu ... SCA winds/seas possible. Fair.

A Flood Watch continues for the forecast area through Monday afternoon, though the heaviest rain has already ended. Low pressure and a potent cold front is still expected to bring total amounts of 2 to 3 inches of rain to the region. As of early Sunday evening, already 1 to 1.5 inches has already fallen across portions of southern DE and NJ, so it is very possible those areas may approach the 3" mark before the rain tapers off early Monday morning. Excessive runoff may result in some flooding of creeks, streams, and other low- lying and flood- prone locations. Most mainstem rivers are currently not forecast to go into flood, however minor flooding is forecast at Pine Brook on the Passaic River and Blackwells Mills on the Millstone River. If higher rainfall rates occur, some of the fast responding creeks may go into flood especially in southeastern Pennsylvania.

Persistent and increasing southerly winds will allow for a buildup of water in Barnegat Bay tonight before a cold front passes through on Monday morning. Winds then shift to a west-northwest flow at 20 to 30 mph with gusts up to 40 mph. This will push that excess water into the back bays of Barnegat Bay along coastal Ocean County.
Minor inundation on the most vulnerable roads is likely, and cannot rule out spotty moderate coastal flooding, especially near Mantoloking.
Spotty minor flooding also cannot be ruled out for other back bay coastal communities in NJ and DE.

PA...Flood Watch through this afternoon for PAZ070-071-101>106.
Winter Weather Advisory until noon EST today for PAZ054-055.
NJ...Flood Watch through this afternoon for NJZ008>010-012>027.
Coastal Flood Advisory from 5 AM to 10 AM EST this morning for NJZ020-026.
DE...Flood Watch through this afternoon for DEZ001>004.
MD...Flood Watch through this afternoon for MDZ012-015-019-020.
MARINE...Gale Warning until 4 PM EST this afternoon for ANZ430-431.
Gale Warning until 7 PM EST this evening for ANZ450>455.

Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesinHgDewPt
NBLP1 - 8548989 - Newbold, PA 56 mi71 min NNW 6G12 46°F 43°F29.69
ROBN4 - 8530973 - Robins Reef, NJ 57 mi71 min NNW 18G24 49°F 29.60

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Wind History for No Ports station near this location
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Airport Reports
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AirportDistAgeWind ktVisSkyWeatherTempDewPtRHinHg
KMPO POCONO MOUNTAINS MUNI,PA 22 sm17 minNW 15G211 smOvercast Lt Snow Mist 32°F30°F93%29.66

Wind History from 12N
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Tide / Current for New Brunswick, Raritan River, New Jersey
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New Brunswick, Raritan River, New Jersey, Tide feet

Tide / Current for Sayreville, Raritan River, New Jersey
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Sayreville, Raritan River, New Jersey, Tide feet

Weather Map
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GEOS Local Image of Mid-Atlantic   

Philadelphia, PA,

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