Long Island Sound West of New Haven CT / Port Jefferson NY Marine Forecast
|Today...W Winds 10 To 15 Kt, Becoming Nw 15 To 20 Kt Late. Gusts Up To 25 Kt Especially Near Shore. Seas 2 To 3 Ft.|
|Tonight...Nw Winds 15 To 20 Kt With Gusts Up To 25 Kt. Seas 2 To 4 Ft.|
|Mon...Nw Winds 15 To 20 Kt, Diminishing To 10 To 15 Kt In The Afternoon. Gusts Up To 25 Kt Early. Seas 2 To 3 Ft In The Morning, Then 1 To 2 Ft.|
|Mon Night...Nw Winds 10 To 15 Kt. Seas 1 To 2 Ft.|
|Tue...Nw Winds 5 To 10 Kt. Seas 1 Ft Or Less.|
|Tue Night...N Winds 5 To 10 Kt. Seas 1 Ft Or Less.|
|Wed...Nw Winds Around 5 Kt. Seas 1 Ft Or Less.|
|Wed Night...W Winds Around 5 Kt. Seas 1 Ft Or Less.|
|Thu...W Winds Around 5 Kt. Seas 1 Ft Or Less.|
|Thu Night...W Winds 5 To 10 Kt. Seas 1 Ft Or Less.|
Area Forecast Discussion|
National Weather Service New York NY
1036am EST Sunday Jan 19 2020
Low pressure near Nova Scotia will continue moving away into the Canadian Maritimes today as high pressure builds into the central states. Th high will slowly in from west, settling over the region by mid week.
Near Term - Until 6pm This Evening
Deep layered weakly cyclonic flow will persist today as energy continues to rotate through the upper level longwave trough. Meanwhile a low level and surface trough will remain across southern New England into the lower Hudson Valley as low pressure pulls away into the Canadian Maritimes. Moisture remains and with energy coming through the upper trough this afternoon skies will be mostly cloudy NW of NYC, with chance of a few flurries inland. Gusty downslope NW flow appears to be holding off clouds from NYC metro east, so have gone with a more optimistic mostly sunny sky forecast there.
Heigheights begin to rise early this evening as the trough weakens and the parent low moves well to the northeast, and ridging builds to the west.
Temperatures will remain near or above seasonal levels, as Arctic cold does not arrive until later tonight into Monday.
Short Term - 6pm This Evening Through 6pm Monday
The 500mb trough will remain as an Alberta clipper rotates through the Central states. However, ridging will continue to build as surface high pressure slides to the southeast. Arctic cold moves into the area later tonight and Monday with below normal temperatures.
Long Term - Monday Night Through Saturday
The Canadian high continues to build slowly, reaching the area by mid to late week. The core of the Arctic cold will remain to our southwest, and by Wednesday temperatures begin to moderate, rising back to above normal by late week. The area sits between the departing low well to the northeast, and the high across the Midwest, resulting in a cold and gusty N/NW wind through Monday night. These chilly winds begin to abate Tuesday as the pressure gradient relaxes.
Upper northern stream trough over the northeast, with digging shortwave that rounds the base of the trough and passes well to the south by mid week. Ridge builds thereafter ahead of next trough that approaches by next weekend.
Dry weather will remain Monday night through late in the week.
Temps aloft should be too warm for anything but rain by next Saturday. If temps are initially too cold, dependent on when precipitation arrives, some freezing rain is possible.
SCA (Small Craft Advisory) in effect for all waters, and has been extended through Monday afternoon for the ocean and into early Monday morning elsewhere, W-NW winds gust up to 25-30 kt. Higher winds on the Sound will be mostly closer to shore today, then become widespread tonight. Cannot rule out an occasional gust up to 35 kt on the outer ocean waters tonight, not widespread or of long enough duration to warrant a gale warning.
Waters should then remain below advisory criteria all of next week owing to a surface high pressure system that builds into the forecast area. Generally light north winds of 5-10 kt with seas 1-2 feet through Friday. South winds after Friday expected ahead of the next system.
No hydrologic impacts expected through Friday.
NYC NOAA Weather Radio Station KWO35 (162.55 MHz) is still operating at reduced power.
NOAA New York NY Office: Watches - Warnings - Advisories
CT...None. NY...None. NJ...None.
Small Craft Advisory until 10am EST Monday for ANZ330-335-338- 340-345. Small Craft Advisory until 6pm EST Monday for ANZ350-353-355.