Manasquan Inlet to Little Egg Inlet NJ out 20 NM Marine Forecast
|Tonight...N Winds 10 To 15 Kt. Gusts Up To 20 Kt Early This Evening. Seas 3 To 4 Ft. Swell Mainly From The E With A Dominant Period Of 7 Seconds.|
|Thu...N Winds 5 To 10 Kt. Seas Around 3 Ft Early In The Morning, Then 2 Ft Or Less. Swell Mainly From The E With A Dominant Period Of 7 Seconds.|
|Thu Night...N Winds 5 To 10 Kt, Increasing To 20 To 25 Kt With Gusts Up To 30 Kt. Seas 2 Ft Or Less, Then 3 To 5 Ft Early In The Evening. Swell Mainly From The Ne With A Dominant Period Of 6 Seconds.|
|Fri...N Winds 15 To 20 Kt With Gusts Up To 25 Kt, Becoming Nw 5 To 10 Kt. Seas 3 To 5 Ft. Swell Mainly From The Ne With A Dominant Period Of 7 Seconds.|
|Fri Night...W Winds 5 To 10 Kt, Increasing To 10 To 15 Kt With Gusts Up To 20 Kt After Midnight. Seas 3 To 4 Ft.|
|Sat...W Winds 10 To 15 Kt With Gusts Up To 20 Kt. Seas Around 3 Ft.|
|Sat Night...W Winds 10 To 15 Kt, Diminishing To 5 To 10 Kt After Midnight. Gusts Up To 20 Kt. Seas Around 3 Ft.|
|Sun...Sw Winds 5 To 10 Kt. Seas 3 To 4 Ft.|
|Sun Night...Sw Winds 10 To 15 Kt, Diminishing To 5 To 10 Kt After Midnight. Seas 3 To 4 Ft.|
|Mon...Sw Winds 5 To 10 Kt, Becoming S 10 To 15 Kt With Gusts Up To 20 Kt In The Afternoon. Seas 3 To 4 Ft. A Chance Of Rain.|
|Mon Night...Sw Winds 10 To 15 Kt With Gusts Up To 20 Kt. Seas 3 To 4 Ft. A Chance Of Rain.|
Area Forecast Discussion|
National Weather Service Mount Holly NJ
350pm EST Wednesday Feb 19 2020
High pressure located in the Dakotas this afternoon will build to the south and east. The center of the high is forecast to pass off the Carolina coast on Sunday. Low pressure is expected to progress from the middle Mississippi River Valley on Monday to the northeastern states on Tuesday. The low should reach the waters off Nova Scotia late on Tuesday night. Another area of low pressure may approach our region from the west on Wednesday.
Near Term - Until 6am Thursday Morning
High pressure will continue to build into the region from the west. Northwest flow will continue tonight and become more northerly towards daybreak. The continued cold advection will keep the airmass relatively cool and with only high clouds streaming through the region we should be able to radiate fairly well. The only mitigating factor will be the winds, which may remain around 5 to 10 mph overnight. Should the winds slacken more than expected then we would be able to radiate even better.
Overnight lows will be in the 20s through much of the region with mid/upper teens across the southern Poconos and portions of northwest New Jersey.
Short Term - 6am Thursday Morning Through 6pm Thursday
A low pressure system will slide across to the south of our area on Thursday. Moisture will increase through the atmosphere and we will see an increase in cloud cover through the day. The main precipitation shield is expected to remain to the south of our area but guidance is starting to show a more northerly push and some light rain/snow showers may start to make their way into the region by late afternoon, mainly our Delmarva counties and far southern New Jersey. Most hi-res guidance keeps us dry but with moister mid levels and a deepening upper level trough and a decent upper level jet approaching the region, cannot rule out the possibility of some snow/rain showers and if the trend continues, we may need to shift things slightly north.
Otherwise, Thursday will be a relatively quiet weather day with cloudy skies and temperatures ranging from the mid/upper 20s across the higher elevations to mid 30s to around 40 through the rest of the forecast area.
Long Term - Thursday Night Through Sunday
Surface high pressure is forecast to extend northeastward from the central Great Plains, across the southern Great Lakes to northern New England on Thursday evening. Meanwhile, low pressure is expected to be moving away from the Carolina coast.
The northern edge of the precipitation shield associated with the low may reach southern Delaware late on Thursday. As a result, there is a chance of some light rain or a light dusting of snow in that area on Thursday evening. The low should move quickly out to sea, taking any precipitation and clouds along with it on Thursday night.
The center of the high is expected to move from the middle Mississippi River Valley on Friday to the waters off North Carolina on Sunday. The air mass should bring dry weather conditions to our region for Friday, Saturday and Sunday. Daytime temperatures are forecast to be about 8 degrees below normal on Friday. As the air mass modifies, daytime highs will likely rise to near 8 degrees above normal on Sunday.
The surface high is anticipated to drift farther out to sea early in the new week. Low pressure should move from the middle Mississippi River Valley on Monday to New England and vicinity on Tuesday evening. We are anticipating an increase in cloud cover on Monday with precipitation overspreading our region from the west and southwest for Monday and Tuesday. Based on the expected temperature profiles, it should be a rain event for our counties in eastern Pennsylvania, New Jersey, Delaware and northeastern Maryland.
Another low may develop along a trailing cold front and it could affect our weather on Wednesday, bringing some rain showers.
Northwest winds around 10 to 15 knots with some gusts around 20 knots through this evening, diminishing overnight and then becoming more northerly on Thursday around 10 knots. Seas around 2 to 4 feet tonight and gradually dropping to 2 to 3 feet on Thursday.
Outlook... Thursday night and Friday...A Small Craft Advisory is in effect for northerly wind gusts of 25 to 30 knots.
Friday night through Monday...No marine headlines are anticipated.
NOAA Mount Holly NJ Office: Watches - Warnings - Advisories
PA...None. NJ...None. DE...None. MD...None.
Small Craft Advisory from midnight Thursday night to 4pm EST Friday for ANZ452>455. Small Craft Advisory from midnight Thursday night to noon EST Friday for ANZ430-431-450-451.