685 FXUS61 KOKX 061014 AFDOKXArea Forecast Discussion National Weather Service New York NY 614 AM EDT Mon Oct 6 2025
.SYNOPSIS... High pressure over the area today will move to the east on Tuesday. A cold front will then approach Tuesday night and pass through early Wednesday, followed by high pressure through late week/ Low pressure may pass south and east of Long Island some time this weekend.
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.NEAR TERM /THROUGH TONIGHT/... Patchy dense fog and low stratus was most evident on 11.2-3.9um channel difference satellite imagery over SE CT and the lower Hudson Valley. SPS issued until 9 AM to address this. Fog over southern/central NJ should stay just south of Staten Island and NE NJ.
Fog should burn off fairly quickly after sunrise, with temps quickly responding under mostly sunny skies, and high temps reaching the lower/mid 80s in most places, and the 70s along coastal SE CT and the south shore of Long Island, per blend of NBM 90th percentile and GFS/ECMWF MOS guidance which have done better than straight NBM with recent warmth. This also lines up fairly well with model fcst 925 mb temps which look about 1 degree C cooler than those of yesterday.
Low temps tonight should be fairly similar to those of Sunday night, with lower 60s in NYC and surrounding suburbs, and in the 50s elsewhere. Some patchy fog is possible across the interior
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.SHORT TERM /TUESDAY THROUGH WEDNESDAY NIGHT/... As the high weakens on Tue, S flow will increase ahead of an approaching cold front, with increasing clouds as well especially in the afternoon. High temps will reach the upper 70s/lower 80s one last time before a cooler regime sets in.
Showers with the front will move in Tue night, with the highest PoP late Tue night into Wed morning just ahead of the front, and can`t rule out some rumbles of thunder with fropa. Shower chances continue mainly E of NYC going into Wed afternoon, and except for perhaps some lingering showers out east most precip should be over by Wed night. It will be cooler on Wed, with daytime highs only in the upper 60s/lower 70s, then lows mostly in the 40s as a somewhat brisk northerly flow gusting up to 20-25 mph at times transports cooler air down into the area.
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.LONG TERM /THURSDAY THROUGH SUNDAY/... NBM was followed with no significant changes. Key Points:
* High pressure keeps the area dry through Saturday afternoon. High temperatures will be in the 60s from Thursday through Saturday.
* Coastal low pressure may bring rainfall Saturday night and Sunday.
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.AVIATION /10Z MONDAY THROUGH FRIDAY/... High pressure remains in control through the TAF period.
Mainly VFR conditions are expected. The only exception will be tempo to prevailing MVFR-IFR cigs and/or vsbys until 12-14z mainly at KGON and KHPN, but possibly at KISP and KBDR as well.
A light SW flow will become S late this morning and early afternoon with speeds at around 10 kt or less. Lighter SW winds for tonight.
...NY Metro (KEWR/KLGA/KJFK/KTEB) TAF Uncertainty...
No unscheduled amendments expected.
.OUTLOOK FOR 06Z TUESDAY THROUGH FRIDAY...
Late tonight-Tuesday: VFR. MVFR-LIFR conditions possible for outlying terminals possible late at night into early Tuesday morning. SW winds G15-20kt Tuesday afternoon into evening.
Tuesday night-Wednesday: MVFR, possibly IFR at times, with showers, ending Wednesday afternoon and evening. Slight chance of a thunderstorm. VFR returns by Wednesday night. NW-N wind gusts 15-20kt Wednesday afternoon into night.
Thursday-Friday: VFR.
Detailed information, including hourly TAF wind component forecasts, can be found at: https:/www.weather.gov/zny/n90
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.MARINE... As S flow increases to 15-20 kt ahead of an approaching cold front on Tue, ocean seas E of Fire Island Inlet may build to 5 ft Tue night into Wed. Post-frontal NW flow may gust to 20 kt daytime Wed, then as winds veer N gusts should increase to 25-30 kt on all waters Wed night, with ocean seas 4-6 ft.
Minimal SCA cond are still likely on the ocean Thu morning with gusts up to 25 kt and seas up to 5 ft, then winds and seas are expected to be below criteria on all waters Thursday afternoon through Saturday.
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.HYDROLOGY... Rainfall with a frontal passage tue night into Wed could be as much as 3/4 to 1 inch across Long Island and SE CT, and 1/2 to 3/4 inch north/west of there including NYC. No hydrologic issues expected as this rainfall will be beneficial.
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.TIDES/COASTAL FLOODING... Some spotty minor coastal flooding may be possible around the times of high tide Tue morning and Wed morning on the south shore back bays of Nassau, on Newark Bay, and along the Fairfield CT coastline, with only very minor departures of less than 1/2 foot needed to touch thresholds in spots. Model guidance also predicts minor flooding for the Thu morning high tide cycle but tends to have a high bias in northerly flow, so attm think water levels will stay just below flood thresholds.
Coastal low pressure may bring additional issues on Sunday. It is still much too early to go into details.
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.OKX WATCHES/WARNINGS/ADVISORIES... CT...None. NY...None. NJ...None. MARINE...None.
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NEAR TERM...BG SHORT TERM...BG AVIATION...JC HYDROLOGY...BG TIDES/COASTAL FLOODING...BG
NWS OKX Office Area Forecast Discussion