


Area Forecast Discussion
Issued by NWS Upton, NY
Issued by NWS Upton, NY
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141 FXUS61 KOKX 061124 AFDOKX Area Forecast Discussion National Weather Service New York NY 724 AM EDT Sun Jul 6 2025 .SYNOPSIS... High pressure will remain in control through the weekend. A cold front will approach from the Great Lakes on Monday, passing slowly across on Tuesday and Tuesday night. The front may remain stalled over or just to the south of the area mid week. A more robust frontal system approaches by the end of the week. && .NEAR TERM /THROUGH TONIGHT/... Dry and warm conditions continue today with highs in the low-mid 90s in the usual warmest spots in NE NJ, and mostly upper 80s to around 90 away from the immediate coast. Also, dew points will be a little higher than yesterday. The combination of higher temperatures and dew points will result in heat index values in the low to mid 90s for NE NJ and the Lower Hudson Valley. Heat index values are expected to remain just below 95 degree mark. Tonight, the SW flow will continue across the area. This would be at least the 2nd consecutive night of onshore flow. Both the GFS and NAM soundings are showing the potential for fog and/or stratus across portions of the forecast area, especially along the coast. Lows should only fall into the lower and middle 70s. && .SHORT TERM /MONDAY THROUGH TUESDAY NIGHT/... The high builds further offshore Monday with a cold front approaching from the west. With the high moving offshore, this will also allow some of the moisture associated with Chantal to approach from the south. POPs gradually increase through the morning, especially west of NYC. By afternoon, POPs become likely with areas of showers and thunderstorms. East of NYC, there will be a lower chance of POPs. Rain and thunderstorm chances continue into Monday night with the remnant system even closer, but there`s still not enough confidence from the varying model solutions to go with likely PoPs. Some guidance even suggests a narrow band of subsidence forming over the forecast area between an approaching cold front from the west and Chantal`s remnants from the south. Please refer to the latest official forecast from the National Hurricane Center regarding tropical cyclone Chantal. The unsettled conditions continue right into Tuesday and Tuesday night with the approach and passage of a cold front. Once again, showers and thunderstorms are expected to develop ahead of and along the front. With PWATs in the 2.0-2.5 inch range, expect any storms to be capable of locally heavy rainfall. The front eventually moves either offshore of remains over the far southeastern sections of the CWA into early Wednesday morning. With respect to temperatures in the short term. Temperatures Monday and Tuesday should be somewhat similar with highs in the 80s and lower 90s. Dew points however should be higher, especially with Chantals remnants getting a bit closer to the region. We do have some heat index values exceeding 95 on Monday across portions of the area, most notably NE NJ, the Lower Hudson Valley and into SE CT. As dew points climb further on Tuesday, more widespread 95 heat indices should be reached. However, one significant concern will be the amounts of cloud cover and rainfall chances, which could keep temperatures cooler than forecast. Either way, it will be a very muggy two days. For now, the plan is to hold off on any heat headlines for Monday and Tuesday. && .LONG TERM /WEDNESDAY THROUGH SATURDAY/... Despite the unsettled nature of the extended forecast, global models were in fairly decent agreement, so the NBM was followed. Disturbances in the flow will traverse the area through much of the middle of the week. By the end of the week, more robust energy in the flow approaches from the west and allows the trough to dig into the Northeast. This will provide for a better opportunity for showers and storms as well as slight decreases in temperatures. High pressure may try to build in from the northeast by Saturday. Despite chances for showers each day, high temperatures should remain in the mid 80s through mid week, and upper 70s to lower 80s by the end of the week. && .AVIATION /12Z SUNDAY THROUGH THURSDAY/... VFR through today as high pressure remains offshore. IFR in fog and low stratus may return late Sunday night into Monday morning. Brief improvement mid/late morning Monday before showers and thunderstorms appraoch the area starting around 15Z. S-SW winds redevelop mid/late morning, increasing to 10-15 kt with gusts up to 25 kt possible this afternoon. A more southerly sea breeze should once again make it to KEWR/KTEB late. Winds drop below 10 kt Sunday night, possibly going light and variable at outlying terminals. Winds S around 10 kt again tomorrow. ...NY Metro (KEWR/KLGA/KJFK/KTEB) TAF Uncertainty... AMD possible for wind gusts today, as timing may be off by a few hours. .OUTLOOK FOR 12Z MONDAY THROUGH THURSDAY... Monday through Thursday: Mainly afternoon and evening showers/tstms possible with MVFR or IFR cond. Highest chance exists from late Mon through Tue evening. Detailed information, including hourly TAF wind component forecasts, can be found at: https:/www.weather.gov/zny/n90 && .MARINE... Sub-SCA conditions are expected on all waters through at least Sunday morning. Some gusts close to 25 kt are possible Sunday afternoon/evening on the ocean with seas climbing to around 4 ft. Sub-advisory conditions are then likely for Monday through Friday, with seas on ocean waters possibly climbing to 5 feet Friday night. && .HYDROLOGY... Some tropical moisture may feed into the area Tuesday and Tuesday night which may allow for an environment supportive of locally heavy rainfall. WPC has portions of the area in a marginal risk for excessive rainfall for this time frame. && .TIDES/COASTAL FLOODING... The rip risk for all beaches will be moderate both Sunday and Monday, given the southerly flow and increasing southerly swell. Surf heights around three ft are likely over the period, but may increase to near 4ft by Monday, especially across NYC, Nassau and western Suffolk beaches. && .OKX WATCHES/WARNINGS/ADVISORIES... CT...Air Quality Alert from 11 AM this morning to 11 PM EDT this evening for CTZ005-009. NY...None. NJ...Air Quality Alert from 11 AM this morning to 11 PM EDT this evening for NJZ002-004-006-103>108. MARINE...None. && $$ SYNOPSIS...BC NEAR TERM...BC SHORT TERM...BC LONG TERM... AVIATION...BR MARINE...BC/BR HYDROLOGY...BC/BR/MW TIDES/COASTAL FLOODING...