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Forecast Discussion for New York City/Upton, NY
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084 FXUS61 KOKX 011943 AFDOKX Area Forecast Discussion National Weather Service New York NY 343 PM EDT Mon Jun 1 2026 .WHAT HAS CHANGED... No significant forecast changes. && .KEY MESSAGES... 1) Seasonable temperatures thru Tuesday, with a chance for diurnal showers this afternoon and Tuesday. One more chilly night across outlying areas tonight into Tue AM. 2) A moderate rip/longshore current risk continues into this evening, the lowering to a low risk for Tuesday into midweek. 3) Summer heat builds Thu thru Sat. Unsettled conditions possible to end the weekend into early next week. && .DISCUSSION... .KEY MESSAGE 1... Partly to mostly cloudy skies and iso-sct shower activity this afternoon/early eve, particularly N & W of NYC/NJ metro in response to mid level shortwave passage will taper of this evening with clearing skies. Good radiational cooling conds across outlying areas should allow temps to radiate into the 40s, with some upper 30s across interior valleys and pine barrens of LI. One last shortwave passes through Tue AM into afternoon bringing partly to mostly cloudy conds in the afternoon, and potential for isolated showers along sea-breeze boundary or off interior high terrain. Temps will be right near climo norms, in the lower to mid 70s. .KEY MESSAGE 2... The moderate rip/longshore current risk continues into this evening for all south facing Atlantic beaches with combined 3-4 ft E wind wave and residual 1-2 ft southerly swell. The overall rip risk then becomes low for Tuesday with primarily a 2-3 ft easterly swell, and 1 ft residual southerly swell. This will primarily be a longshore current, with enhanced rip risk on east of groins, jetties, or other n-s oriented formation. .KEY MESSAGE 3... Models in good agreement with east coast troughing sliding well south of the region on Wednesday, with rising heights and zonal flow aloft around northern periphery southern ridging for Thu thru Sat timeframe. At the surface, high pressure sinks south of the region and establishes off the SE US coast. The result will be a deep w/sw flow and persistent WAA pattern. Areas from NYC west should get back into the lower 80s on Wed, with more widespread mid to upper 80s on Thu (around 90 for NE NJ). Good signal (NBM probs of greater than 75% of 90F) for temps reaching the lower 90s to 95 on Fri/Sat for NYC/NJ metro, nearby suburbs and portions of the region away from the south coasts. Temps could get close to daily record highs Thu/Fri at Bridgeport, with some record high mins possible on Sat in outlying areas. NBM mean Tds are currently progged in the 50s, which would have heat indices at or just below temps, but potential this could trend higher as the week progresses (similar to the June 19-20th heat event). WPC Day 3-7 probs (based on GEFS, ECES, and NAEFS) for 95+F heat indices are in the 10-40% range. General agreement on a northern stream trough amplifying as it moves through SE Canada Sat into Sun, with a backdoor cold front pushing through the region late Sat into Sat Night. This would bring an end to the heat heading into Sunday. This would also bring the next threat for shower and thunderstorm activity Sat aft/eve. Model divergence increases for late weekend into early next week on evolution of subsequent PAC shortwave approaching the region, but potential exists for unsettled conditions with a slow approaching frontal system. && .AVIATION /20Z MONDAY THROUGH SATURDAY/... High pressure remains near the area terminals through the TAF period. VFR. Low chance of an isolated shower for the NYC terminals this afternoon. Have gone ahead and removed the prob30s for this afternoon, except for KBDR where based on radar trends, will be the best chance to see an isolated shower. For the most part, winds will be from the east this afternoon with speeds around 10-15kt. There could also be some gusts to 20-25 kt. Winds become light and variable overnight. Winds will be from the SW on Tuesday. ...NY Metro (KEWR/KLGA/KJFK/KTEB) TAF Uncertainty... Timing of gusts could be 1-3 hours off from TAF this afternoon. Gusts today may be more occasional in frequency. SHRA may be more iso this afternoon. .OUTLOOK FOR 18Z TUESDAY THROUGH SATURDAY... Tuesday-Friday: VFR. S-SW winds 10-14kt during the daytime. Some wind gusts 15-20 kt during the late afternoon/evening possible Thursday and Friday. Saturday: Mainly VFR. Chance of an afternoon shower or thunderstorm could produce some brief MVFR or lower conditions. Detailed information, including hourly TAF wind component forecasts, can be found at: https:/www.weather.gov/zny/n90 && .MARINE... Marginal nearshore easterly SCA gusts all waters this afternoon, diminishing this evening. Easterly wind waves build to 3 to 5 ft on the ocean by this evening, then should gradually subsiding through Tuesday. Otherwise, sub sca cond expected through Thursday in response to weak pressure gradient as high pressure building and south of the waters. && .OKX WATCHES/WARNINGS/ADVISORIES... CT...None. NY...None. NJ...None. MARINE...None. && $$ DISCUSSION...NV AVIATION...BC MARINE...NV |
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