Select NOAA-NWS Forecast Office Text Products
(Product availability varies with seasons, forecast office, and weather.)
Forecast Discussion for New York City/Upton, NY
To Select Another NWS Office Click on Map or Choose from List
|
| Select Forecast Office: | Select Product: |
256 FXUS61 KOKX 271540 AFDOKX Area Forecast Discussion National Weather Service New York NY 1140 AM EDT Sat Jun 27 2026 .WHAT HAS CHANGED... No significant changes made. && .KEY MESSAGES... 1) Periodic rain showers and possibly a thunderstorm today. 2) High heat and humidity becoming increasingly likely from mid to late next week. && .DISCUSSION... .KEY MESSAGE 1... Showers in association with a weak wave of low pressure and stalled frontal boundary just to our south will pass through today into tonight. Latest CAM`s are signaling potential for locally heavy rain and embedded tstms mid to late afternoon mainly N/W of NYC as a mid level shortwave trough approaches from central PA and acts on a very moist air mass, with PW 1.75-2 inches and tall/skinny CAPE less than 500 J/kg. The 12Z HREF predicts a 30-40% chance of an inch of rain in 3 hours mainly over NE NJ and adjacent portions of the lower Hudson Valley. Otherwise, today will not be a washout, with most of the activity elsewhere being on the light side. An isolated thunderstorm is also possible across NE NJ and the Lower Hudson Valley with the highest instability out that way. However, no severe storms expected. .KEY MESSAGE 2... A highly anomalous amplified upper flow will be featured across the country from mid to late week, with a trough out west and a a high centered over the Ohio and Tennessee Valleys. Heights are greater than 594 dm, about 2 SD above normal, and 85H temps on Thursday on the latest 00Z GFS are at or just above 22C. There is still some uncertainty with the upper ridge strength and magnitude as disturbances round the ridge across the Northeast. The 00Z GFS is still supporting a convective complex dropping across the Northeast Tuesday night into Wednesday morning, sending a back door cold front through the area. NBM temperatures for the long term were a few degrees too warm, especially for Thursday and Friday, most notably with a 105 high temperature near KTEB on Thursday. This seems too high with the aforementioned 22C at 85H. More realistic highs for NE NJ are upper 90s to lower 100s, slightly lower for NYC with the rest of the area in the middle to upper 90s, except cooler at the immediate coast. Slightly cooler readings are expected region- wide Friday. Record highs during this time are mainly 100 plus. So some pretty stout records are in place. If the NBM highs pan out however, they would tie or break records for Thursday. Max heat index values reach Heat Advisory criteria (95-99 for two days, 100-104 for one day) by Wednesday, with isolated readings reaching Extreme Heat Warning criteria (105+). Thursday will see widespread 105+ across the forecast area. Lower max heat index values expected Friday, with Heat Advisory possible for most places except NE NJ, NYC, and western Long Island, where Extreme Heat Warnings may be possible once again. && .AVIATION /15Z SATURDAY THROUGH WEDNESDAY/... Weak low pressure along a front remains near the region during the TAF period with high pressure returning late in the TAF period. Periodic widely scattered showers through the day. Mainly VFR forecast but occasional MVFR possible within some showers. There is a slight chance of thunderstorms this afternoon into early evening also. Winds less than 10 kts through the TAF period with variable directions at times. Generally more southerly wind directions this afternoon and more easterly tonight into Sunday. Mainly VFR tonight. Possible MVFR/IFR with patchy fog east of the NYC metro terminals. ...NY Metro (KEWR/KLGA/KJFK/KTEB) TAF Uncertainty... Amendments possible to refine timing of showers which could be a few hours off from TAF. Amendments possible to lower category with showers to MVFR. Possible afternoon into early evening thunderstorm, mainly north and west of NYC terminals. .OUTLOOK FOR 12Z SUNDAY THROUGH WEDNESDAY... Sunday: Possible MVFR forecast afternoon with showers for northern terminals. Otherwise VFR. Monday: VFR. Tuesday: MVFR or lower possible with chances for showers and thunderstorms. SW wind gusts 15-20 kt. Wednesday: Mainly VFR. SW wind gusts 15-20 kt afternoon into early evening. Detailed information, including hourly TAF wind component forecasts, can be found at: https:/www.weather.gov/zny/n90 && .MARINE... Conditions forecast to remain below SCA thresholds through the middle of next week. Could see some winds approaching 25 kt Tue afternoon and Wed afternoon in a southerly flow. Rip Currents: The rip current risk looks to be low over the weekend with 1-2 ft swell sets varying between 5-10s and onshore winds at or below 10 kt. Recent observations at area beaches were also supporting a lower risk. && .OKX WATCHES/WARNINGS/ADVISORIES... CT...None. NY...None. NJ...None. MARINE...None. && $$ DISCUSSION...BG AVIATION...99 MARINE...BG |
Previous Forecast Discussions may be found at
NWS New York City/Upton, NY (OKX) Office Forecast Discussions.
(Click 'Previous Version' there to view past versions successively.
Some may differ only in time posted.)
Products Courtesy of NOAA-NWS
NWS Information Parsing Script by Ken True at Saratoga Weather - WFO and Products Scripts by SE Lincoln Weather.
Mapping by Curly at Michiana Weather and by Tom at My Mishawaka Weather.












