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Forecast Discussion for New York City/Upton, NY
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135 FXUS61 KOKX 222356 AFDOKX Area Forecast Discussion National Weather Service New York NY 756 PM EDT Wed Oct 22 2025 .SYNOPSIS... Low pressure will continue to lift slowly north across eastern Canada, while high pressure builds in from the SW through the end of the week. This will send a series of weak cold fronts or troughs across the area. High pressure builds in for the beginning of the weekend, and remains into early next week. A frontal system approaches the region late Tuesday into Wednesday. && .NEAR TERM /UNTIL 6 AM THURSDAY MORNING/... A secondary cold front moves through this evening, with another surge of cooler and drier air that will also help to maintain gusty winds across much of the area through the night. Despite the change in air mass, winds will inhibit radiational cooling and keep temperatures fairly uniform across the area in the 40s...still a few degrees above climatological normals. && .SHORT TERM /6 AM THURSDAY MORNING THROUGH FRIDAY/... The long wave trough remains over the east, with cold advection continuing into Thursday into Thursday night. Gusty WSW winds will continue into the daytime, with temperatures rising into the upper 50s to lower 60s beneath mostly sunny to partly cloudy skies. High pressure begins to build from the west into the night, allowing the pressure gradient to relax some. With better radiational cooling, temperatures will lower into the 30s to mid 40s, and may support frost across portions of the interior. && .LONG TERM /FRIDAY NIGHT THROUGH WEDNESDAY/... A weak surface trough, associated with low pressure well north of the region, rotates through the area Friday afternoon. The atmospheric column will be rather dry, especially in the lower levels, and removed chances for precipitation. If any rain does occur will be brief and more sprinkles. High pressure then builds into the area later Friday and remains into the beginning of next week. This high will bring a cool airmass into the region, with both daytime highs and nighttime lows running a few degrees, up to 5 degrees, below normal for late October. Inland temperatures will be in the lower to mid 30s much of the time, with lows Sunday night and Monday night at or below freezing. With light winds and mainly clear conditions have added frost to the weather for the overnights of Friday through Sunday. And there is the potential for frost Monday night, however, there is the chance of more cloudiness and frost may not occur. There is uncertainty with the chances of precipitation for the beginning of next week as an upper trough amplifies as shortwaves rotate into the longwave trough across eastern Canada. There will be better chances Tuesday night into Wednesday. && .AVIATION /00Z THURSDAY THROUGH MONDAY/... Low pressure will continue to lift slowly north across eastern Canada, while high pressure builds in from the SW through the end of the week. VFR through the TAF period. WSW winds will gradually diminish through the night and settle around 10kt at the coast and less than 10 kt at the inland terminals. Gusts along the coast to around 20 kt should become less frequent as the night progresses or even drop all together. Winds pick up 14Z-15Z at 10-15kt G20kt. ...NY Metro (KEWR/KLGA/KJFK/KTEB) TAF Uncertainty... Gusts may be less frequent the first half of the night. Onset of gusts on Thursday could be delayed 1-3 hours. .OUTLOOK FOR 00Z FRIDAY THROUGH MONDAY... Thursday afternoon-Monday: VFR. Detailed information, including hourly TAF wind component forecasts, can be found at: https:/www.weather.gov/zny/n90 && .MARINE... Small craft conditions will gradually subside overnight with the exception of the eastern ocean waters. With sustained WSW flow, waters will be slow to subside, and small craft seas will continue into Thursday night. With high pressure then dominating Friday into the beginning of next week conditions remain below SCA levels across the forecast waters. There is a lot of uncertainty with the timing and placement of low pressure approaching the waters for Tuesday, and ocean seas and gusts may be near SCA levels late Monday night into Tuesday. && .HYDROLOGY... There are no hydrological concerns throughout entire forecast period. && .OKX WATCHES/WARNINGS/ADVISORIES... CT...None. NY...None. NJ...None. MARINE...Small Craft Advisory until 8 PM EDT this evening for ANZ332- 345. Small Craft Advisory until 6 AM EDT Friday for ANZ350-353. Small Craft Advisory until noon EDT Thursday for ANZ355. && $$ UPDATE...DW |
Previous Forecast Discussions may be found at
NWS New York City/Upton, NY (OKX) Office Forecast Discussions.
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