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Forecast Discussion for New York City/Upton, NY
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670 FXUS61 KOKX 230538 AFDOKX Area Forecast Discussion National Weather Service New York NY 138 AM EDT Thu Apr 23 2026 .WHAT HAS CHANGED... No significant changes were made. && .KEY MESSAGES... 1) Some showers, mainly this evening, and some patchy fog overnight with low temperatures near normal. 2) Warmer Thursday with a low potential for an elevated risk of fire spread in the afternoon for northern most interior sections. 3) A frontal system will provide a chance of rain over the weekend. && .DISCUSSION... .KEY MESSAGE 1... Doppler radar indicates some showers developing to the north and west of NYC. The CAMs show isolated to scattered showers traversing the region this evening and then dissipating overnight. Forecast updated to account for this. Not expecting much in the way of rainfall with these showers, likely under 0.05 inch of accumulation. Also, added in some patchy fog overnight where low levels become saturated. .KEY MESSAGE 2... With winds more offshore and out of the NW on Thursday, look for warmer temperatures. Downsloping winds will result in adiabatic compression and should aid in temperatures getting above normal during the afternoon. Forecast soundings show a good degree of mixing by early afternoon, give or take a few hours from west to east across the region. Therefore max temperatures should average about 5 to 10 degrees above normal. Locations across the W and NW interior will be warmest compared to the remainder of the region. NW winds should gust to 25 mph, with peak gusts to around 30 mph with no impacts anticipated. Due to the recent rain and winds expected to be light until the late Thursday morning the window for fire spread conditions appears rather tight, with it taking another day or so to completely dry and get fuels up. Thus, after coordinating with surrounding offices and state partner have chosen not to go with a statement at this time. .KEY MESSAGE 3... A warm front will approach from the W on Sat. It is unlikely to reach the area per the 12Z model consensus, but there will be WAA aloft resulting in mid lvl frogen across the region. With a conditionally unstable airmass, this will help with vertical development across the area. Deep omega indicated in the timeheights reflecting this. As a result, a period of rain with possibly an embedded elevated tstm is possible over the weekend. Timing is still a bit uncertain, but the focus right now appears Sat aftn and eve for the best chances. && .AVIATION /06Z THURSDAY THROUGH MONDAY/... Low pressure departs farther offshore with high pressure staying well northwest of the local region during the TAF period. Another low approaches from the west late in the TAF period. Winds tonight will remain rather light and remain from the N/NW at the NYC terminals. For the terminals outside of NYC, expect winds to also be light, but have more of a variable wind direction. A NW flow is expected during the daytime, with speeds increasing to around 10- 12 kt in the afternoon with gusts up to near 20 kt. Winds will then subside again Thursday evening with gusts diminishing. Mainly VFR conditions expected through the TAF period. The only exception could be the possibility of MVFR to IFR stratus and fog mainly for the terminals east of NYC. ...NY Metro (KEWR/KLGA/KJFK/KTEB) TAF Uncertainty... Low chance of MVFR to IFR early this morning. Timing of categorical changes tonight could be off by 1-3 hours. .OUTLOOK FOR 06Z FRIDAY THROUGH MONDAY... Thursday night: VFR. NW wind gusts near 20 kt diminish early in the evening. Friday: Mainly VFR. Chance of showers with MVFR late at night. Saturday: MVFR or lower at times with showers becoming likely. Sunday: MVFR or lower possible mainly in the morning with a chance of showers. Monday: MVFR or lower possible late at night with a chance of showers. Otherwise, mainly VFR. Detailed information, including hourly TAF wind component forecasts, can be found at: https:/www.weather.gov/zny/n90 && .MARINE... Other than marginal small craft conditions for the far eastern ocean through early this evening, sub advisory conditions will prevail across all waters into Thursday. Although, brief small craft conditions could take place briefly for the western near shore waters Thursday afternoon. Otherwise expect sub advisory conditions to prevail through Friday night and likely through the weekend and into the beginning of next week. && .OKX WATCHES/WARNINGS/ADVISORIES... CT...None. NY...None. NJ...None. MARINE...None. && $$ DISCUSSION...JMC/JE/JM AVIATION...BC MARINE...JMC/JE |
Previous Forecast Discussions may be found at
NWS New York City/Upton, NY (OKX) Office Forecast Discussions.
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