997 FXUS61 KOKX 180538 AFDOKXArea Forecast Discussion National Weather Service New York NY 138 AM EDT Thu Sep 18 2025
.SYNOPSIS... A weak surface low pressure system near the Middle Atlantic coast will slowly track north through tonight. The low will weaken tonight as it pushes south and east of the area through Thursday. A cold front passes across the area Friday. High pressure builds across the Northeast through Saturday and then offshore by Sunday, but maintaining ridging across the area through the first half of next week.
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.NEAR TERM /UNTIL 6 AM THIS MORNING/... Weak low pressure will gradually begin lifting north and east of the area early this morning. Most of the showers have ended with just some lingering light rain/drizzle along the coast. Lows will be in the upper 50s to middle 60s.
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.SHORT TERM /6 AM THIS MORNING THROUGH 6 PM FRIDAY/... Any showers associated with the departing low will be diminishing by Thursday morning. Overcast skies in the morning are expected to become mostly sunny by the afternoon with a quick rise in temperatures thereafter. High temperatures on Thursday will be in the upper 70s to low 80s.
A weak cold front will approach the area from the west late Thursday and eventually pass by overnight. This will shift the wind to the NW but not do much else in terms of sensible weather. Lows Thursday night will be in the upper 50s to middle 60s.
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.LONG TERM /FRIDAY NIGHT THROUGH WEDNESDAY/... Key Points:
*A dry cold frontal passage on Friday will be followed by high pressure, which will remain in control through the first half of next week.
*Temperatures will be slightly below normal this weekend, but start trending warmer early next week.
*No precipitation is currently expected.
NBM closely followed during this forecast period.
A digging upper trough across eastern Canada and into the Northeast will send a cold front through the area on Friday. The frontal passage is forecast to be dry and will bring in a cooler, drier airmass for the weekend. Highs will be around 70 for the weekend with an easterly flow on Saturday veering to the SE/S on Sunday as high pressure builds to the east of the area. Lows will generally be in the upper 40s to mid 50s, but closer to 60 in and around the NYC metro.
Operational globals all continue to have varied solutions heading into next week with how they handle Pac Jet energy moving in the PAC NW and western Canada early next week. The 12Z GFS and 06Z ECMWF close off an upper low over the Northern Plains by the middle of the week, while the Canadian is much more progressive with a sheared out upper trough approaching the eastern seaboard. The GEFs mean supports more progression than the operational. For the time being, the western periphery of the western Atlantic ridge looks to maintain enough ridging to keep conditions mainly dry through the period. In addition, a backing upper flow ahead of the troughing over the mid section of the country will allow for a warmup through the middle of next week. A frontal wave off the southeast coast on Monday does not look impactful at this time.
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.AVIATION /06Z THURSDAY THROUGH MONDAY/... Weak low pressure near the terminals early this morning will push offshore through this evening. A cold front approaches tonight.
MVFR to IFR to start the TAF period with some areas of light rain or drizzle. Ceilings may gradually improve back to MVFR by daybreak before improving to VFR through 16z. VFR then prevails through the TAF period.
NE-N winds early this morning will shift to the NW-W after 12-14z with afternoon SW sea breezes likely at coastal terminals. Winds may remain W at KEWR and KTEB through late afternoon before a light SE-S sea breeze develops. Winds will veer to the SW after 00z and as speeds diminish to around 5 kt.
NY Metro (KEWR/KLGA/KJFK/KTEB) TAF Uncertainty...
Amendments likely for fluctuating flight categories through this morning.
Brief LIFR possible at KLGA through 08z.
IFR may prevail through 12z at KJFK and may not occur at KEWR and KTEB.
Timing of sea breezes this afternoon could be off by 1-2 hours.
.OUTLOOK FOR 06Z FRIDAY THROUGH MONDAY...
Late Thursday night: VFR.
Friday through Monday: VFR.
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.MARINE... SCA has been extended into the early morning hours with slightly stronger winds and seas a bit slower to subside.
Elevated seas on the ocean with some gusts up to 25kt remaining possible will allow for SCA conditions through the first part of tonight. As the wind weakens, seas will subside to below SCA by Thursday morning. Winds and seas will then remain below SCA levels through Friday evening.
Building high pressure to the north Friday night into Saturday may produce winds around 20 kt on the ocean waters with seas of building to around 4 ft. Winds and seas subside later Saturday and remain below SCA levels through Monday.
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.HYDROLOGY... There are no hydrologic concerns through early next week.
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.TIDES/COASTAL FLOODING... With a subsiding ESE swell and weak offshore winds, the rip current risk will decrease to low for the NYC and Nassau beaches for Thursday, and moderate for Suffolk. A low risk is expected for all beaches Friday.
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.OKX WATCHES/WARNINGS/ADVISORIES... CT...None. NY...None. NJ...None. MARINE...Small Craft Advisory until 2 AM EDT early this morning for ANZ350-353-355.
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SYNOPSIS...DW/MW NEAR TERM...DW/MW SHORT TERM...MW LONG TERM...DW AVIATION...DS MARINE...DW/MW HYDROLOGY...DW/MW TIDES/COASTAL FLOODING...
NWS OKX Office Area Forecast Discussion