Area Forecast Discussion
Issued by NWS Albany, NY

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456 FXUS61 KALY 150212 AFDALY AREA FORECAST DISCUSSION National Weather Service Albany NY 1012 PM EDT Tue May 14 2024 .SYNOPSIS... A weak cold front will result in scattered showers and thunderstorms through this evening, especially north of Interstate 90. Chances for showers continue tonight and Wednesday before turning more scattered for Thursday as an upper level disturbance tracks to our south. && .NEAR TERM /UNTIL 6 AM WEDNESDAY MORNING/...
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As of 1012 PM EDT...A slow moving frontal boundary is trying to approach from the northwest. This front will be approaching the area for tonight, but looks to generally remains northwest of the area through the overnight. Meanwhile, another area of low pressure is organizing off the mid Atlantic coast as well. Showers and embedded brief thunderstorms had been ongoing over the Adirondacks this evening, but coverage has been starting to decrease now with the loss of daytime heating. A few brief showers and perhaps a rumble of thunder is still possible over the Adirondacks and Lake George area over the next hour or two, but any precip looks fairly brief and no more hail or gusty winds are anticipated. IR satellite imagery shows skies are now fairly cloudy across a good part of the area. Most of these clouds are mid and high level. In addition, south to southeast winds continue to be gusty at times. With the breeze and clouds, radiational fog shouldn`t be an issue for the overnight hours. There are a few showers near the eastern Catskills and mid Hudson Valley to NW CT, as the northern periphery of southern stream moisture well ahead of upper energy in the midwest and TN/OH Valley begins to approach. Moisture from the southern stream system will expand north and combine with the weakening cold front, which will result in clouds and better coverage of showers toward daybreak. CAMs suggest a batch of showers will spread south to north across much of the area for the late night hours. Lows tonight in the 50s to near 60.
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&& .SHORT TERM /6 AM WEDNESDAY MORNING THROUGH FRIDAY/... The weak front will wash out over us while southern stream upper energy and associated moisture and low level forcing tracks south of Long Island Wednesday through Wednesday night. The upper energy will then build southeast and farther offshore the eastern U.S. Thursday. As the system tracks south of Long Island Wednesday and Wednesday night, the northern shield of showers will track through much of the region but mainly along and south of I-90. Just scattered showers north of I-90. Highs Wednesday in the 60s with near 70 Hudson Valley from the Capital Region southward and around 60 southern Adirondacks. The upper energy tracks well offshore Thursday but boundary layer flow from the east increases over our region and some moisture advection and low level convergence should support more clouds than sun and isolated to scattered showers. Slightly better coverage of showers in northern areas, near the old frontal boundary, and in southern areas, closest to the northern periphery of the offshore system. Highs Thursday in the 60s to around 70. Flat upper ridging builds into our region Thursday night into Friday with weak northern stream upper energy beginning to approach from the Great Lakes through the day Friday. Mainly dry weather through Friday due to the flat upper ridging with highs in the 70s with around 70 southern Adirondacks. && .LONG TERM /FRIDAY NIGHT THROUGH TUESDAY/... A lot of uncertainty next weekend through the beginning of next week. Some guidance has more upper impulses and mainly unsettled weather, while other guidance shows flat upper ridging to zonal upper flow, with drier weather. Some small upper impulses within the flat upper ridging and zonal upper flow could bring chances for showers at some point during the period. So, until there is better agreement in the long term guidance/ensembles, suggesting more clouds than sun and chances for showers and isolated thunderstorms Saturday through Tuesday with the best coverage of clouds and showers Saturday and Sunday and potential breaks in the clouds Sunday and Monday. Highs Saturday and Sunday in the 60s to lower 70s. Highs Monday around 70 to mid 70s with some upper 60s southern Adirondacks. Highs Tuesday in the mid to upper 70s with around 70 to lower 70s in higher elevations. && .AVIATION /02Z WEDNESDAY THROUGH SUNDAY/... Flying conditions are currently VFR with sct-bkn cigs around 9-12 kft and some more high clouds around as well. Some scattered showers across northern areas may impact KGFL over the next few hours with some brief downpours and quick MVFR conditions for visibility. Otherwise, it will remain VFR over the next few hours. Southerly winds have been gusty, with sustained winds 10 to 15 kts and some higher gusts. These will gradually decrease over the next few hours. By later tonight, a batch of showers will be spreading south to north across the area for the late night hours and into the first part of Wednesday. This will allow for MVFR conditions for both visibility and ceilings. Widespread IFR conditions aren`t expected at this time, but will continue to monitor model and upstream trends. South to southeast winds will be 5 to 10 kts for the late night hours. MVFR conditions will continue for a good part of the day on Wednesday. Once showers end, ceilings will gradually improve through the day, with a return for VFR conditions for all sites by the afternoon hours. Some additional spotty showers can`t be ruled out for later in the day as well, so brief MVFR conditions are still possible from time to time. Outlook... Wednesday Night: Low Operational Impact. Slight Chance of SHRA. Thursday: Low Operational Impact. Slight Chance of SHRA. Thursday Night: No Operational Impact. NO SIG WX. Friday: No Operational Impact. NO SIG WX. Friday Night: Low Operational Impact. NO SIG WX. Saturday: Moderate Operational Impact. Chance of SHRA. Saturday Night: Moderate Operational Impact. Chance of SHRA. Sunday: Low Operational Impact. Slight Chance of SHRA. && .ALY WATCHES/WARNINGS/ADVISORIES... CT...None. NY...None. MA...None. VT...None. && $$ SYNOPSIS...NAS NEAR TERM...Frugis/NAS SHORT TERM...NAS LONG TERM...NAS AVIATION...Frugis