Great Egg Inlet to Cape May NJ out 20 NM Marine Forecast
|Today...Sw Winds 10 To 15 Kt With Gusts Up To 20 Kt, Diminishing To 5 To 10 Kt Late. Seas Around 3 Ft. Swell Mainly From The E With A Dominant Period Of 7 Seconds, Becoming Mainly From The S With A Dominant Period Of 7 Seconds This Afternoon.|
|Tonight...Sw Winds 5 To 10 Kt, Becoming W Late. Seas Around 3 Ft. A Chance Of Rain After Midnight. Rain Likely Late. Swell Mainly From The S With A Dominant Period Of 4 Seconds, Becoming Mainly From The Se With A Dominant Period Of 9 Seconds After Midnight.|
|Thu...E Winds 10 To 15 Kt With Gusts Up To 20 Kt. Seas 3 To 5 Ft. Rain. Vsby 1 To 3 Nm. Swell Mainly From The S With A Dominant Period Of 7 Seconds.|
|Thu Night...Ne Winds 15 To 20 Kt With Gusts Up To 30 Kt. Seas 5 To 8 Ft. Rain. Vsby 1 To 3 Nm Early In The Evening. Swell Mainly From The Se With A Dominant Period Of 8 Seconds.|
|Fri...N Winds Around 20 Kt With Gusts Up To 30 Kt. Seas 7 To 10 Ft. Rain.|
|Fri Night...N Winds 15 To 20 Kt With Gusts Up To 25 Kt. Seas 6 To 9 Ft. Rain Likely In The Evening.|
|Sat...Ne Winds 10 To 15 Kt. Seas 4 To 6 Ft.|
|Sat Night...Se Winds Around 10 Kt, Becoming S After Midnight. Seas 3 To 4 Ft.|
|Sun...Sw Winds 10 To 15 Kt. Seas 3 To 5 Ft. A Chance Of Rain.|
|Sun Night...W Winds 15 To 20 Kt, Becoming Nw After Midnight. Seas 4 To 6 Ft. A Chance Of Showers.|
| Area Forecast Discussion|
National Weather Service Mount Holly NJ
344am EDT Wednesday Oct 28 2020
High pressure over New England moves into the western Atlantic today. Several waves of low pressure, including the remnants of Hurricane Zeta, will pass through the Mid-Atlantic Thursday through Friday. High pressure builds in from the north on Saturday. A cold front passes through the region Sunday night. High pressure returns for the start of the new week.
Near Term - Until 6am This Morning
A weak front and some upper energy will be crossing the area today and the clouds and scattered showers across the area will be around much of the morning before decreasing. There is decent coverage of the rains despite the disorganized nature of the system. probability of precipitation will remain in the high chance range for the N and slight chance for southern areas. It will be mostly cloudy for the Northern areas today while some sun returns to central and southern areas by afternoon. Max temps will reflect this with highs reaching the upper 60s and low 70s for southern NJ and much of Delmarva. Across the Northern and NWrn areas highs today will be mostly in the upper 50s to low 60s. Winds will be rather light then turn W or NW at 5 to 10 mph this afternoon.
Short Term - 6am This Morning Through 6am Thursday
The weak front will be dissipating across our area early tonight while weak high pressure remains nearby. The fair weather from the late part of the near term will continue into the early overnight before the next system arrives late. Increasing clouds and rains will overspread the region after midnight as the forerunning rains associated with low pressure well to the south (Zeta) begin to affect the area. probability of precipitation rise to categorical across Delmarva and southern NJ by Thu morning while likely and high chance probability of precipitation are across the Lehihg and southern Poconos and NW NJ.
Long Term - Thursday Through Tuesday
The remnant low of what is currently Hurricane Zeta will lift through the Tennessee Valley and southern Appalachians Thursday morning before moving through Delmarva and southern New Jersey Thursday evening. There are some concerns this low will intensify a bit as it moves of the southern New Jersey coast, and there could be some stronger winds along the shores. With the tropical nature of this storm, periods of moderate to heavy rain will fall, especially across Delmarva and southern New Jersey, where 1-3 inches of rain is possible Thursday afternoon. For southeast Pennsylvania and northern New Jersey, rainfall totals will range from 1-2 inches of rain. These are below Flash Flood Guidance values, but cannot rule out localized street flooding.
A second wave of low pressure follows behind that first low, bringing another slug of rain Thursday night through Friday morning. An additional inch or so of rain is possible with this low.
Meanwhile, high pressure over Canada builds into Ontario and Quebec, and cold air will seep to the south towards the southern Poconos and far northwest New Jersey. Some wintry precipitation is possible across the far northern zones late Thursday night and Friday morning, but not much snow accumulation is expected.
As low pressure departs, high pressure builds south into western New York and western Pennsylvania, bringing some of the coldest air of the season to the region Friday night and Saturday. Lows will drop into the 20s for much of southeast Pennsylvania and northern New Jersey, except for the low 30s around Philly and along the New Jersey coast. Lows will drop into the 20s for much of the Pine Barrens of New Jersey as well, and lows will be in the low 30s for Delmarva.
It is looking like most of the region where the growing season has not ended will end Friday night. Will add patchy frost for areas where the growing season continues.
High pressure moves offshore on Saturday, and then a warm front lifts north on Saturday night. Some rain may develop along eastern Delaware and eastern New Jersey late at night with the passage of the front.
A cold front approaches on Sunday and moves through the region Sunday night. Will carry chance Probability of Precipitation for the area Sunday afternoon and Sunday night with its passage. Precip will mainly be rain, but may end as a brief period of wintry precipitation prior to daybreak Monday.
High pressure returns for the start of the new work week.
Temperatures will generally run below normal levels for much of the period, though highs on Sunday may approach normal levels.
The weak front and low pressure forming along it this morning will cause winds to freshen across the waters this morning with some gusts near 20 knots possible. The winds will decrease later today and remain mostly around 10 knots tonight. Scattered showers this morning and early afternoon then fair. Rain will arrive late tonight.
Outlook... Thursday...Winds and seas should stay below SCA (Small Craft Advisory) criteria through this time.
Thursday night and Friday...Winds and seas will build starting early Thursday evening as low pressure approaches. Gale force gusts will develop Thursday night through Friday morning.
Saturday...Winds and seas will gradually decrease, but we will likely have SCA (Small Craft Advisory) conditions continuing at least on the ocean waters for most, if not all of Saturday.
Sunday...Southwesterly winds and seas on the coastal waters could build again to SCA (Small Craft Advisory) criteria.
NOAA Mount Holly NJ Office: Watches - Warnings - Advisories
PA...None. NJ...None. DE...None. MD...None. MARINE...None.