282 FXUS61 KALY 122326 AFDALYAREA FORECAST DISCUSSION National Weather Service Albany NY 726 PM EDT Fri Sep 12 2025
.SYNOPSIS... High pressure will move east of the region tonight into tomorrow. An upper level disturbance and a cold front will bring widely scattered showers to region Saturday afternoon into Saturday night. A few showers will linger on Sunday mainly north and east of the Capital Region, as high pressure will build back in early next week with dry weather above normal temperatures lasting until Friday.
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.SHORT TERM /THROUGH SUNDAY NIGHT/... As of 208 pm EDT...Another pleasant last summer day across eastern NY and western New England with high pressure building in from southern Quebec over NY and New England with partly to mostly sunny skies and seasonable temps. The skies will become clear to mostly clear tonight with the diurnal cumulus rapidly decreasing early in the evening. Near ideal radiational cooling conditions will occur with light to calm winds. Some patchy fog will form again in the sheltered valleys with lows in the 40s to lower 50s with a few mid 50s near the I-84 corridor. Some high clouds may increase from the west towards sunrise.
Weak high pressure continues to move east of New England on Saturday, as a mid and upper-level longwave trough moves over southeast Canada and the Northeast. A weak short-wave in the west/northwest flow may focus isolated to widely scattered light rain showers especially from the northern Catskills and the Greater Capital Region north and east. The instability looks meager on the CAMS and HREFS, so we did not include thunder at this time. Highs temps will run close to 5 degrees above normal with upper 70s to around 80F in the valley areas and mid 60s to mid 70s over the hills and mtns.
A cold front and the mid to upper level short-wave trough will move across the region Sat night into Sun. Slight chance PoPs were kept in the forecast Sat night and predominately north and east of the Capital Region on Sun. There maybe a rumble of thunder across southern VT, if low amounts of instability can be utilized. The slight chance PoPs may need to be expanded south and west of the Capital Region on Sun. QPF looks light with mainly a tenth of an inch or less with any showers due to limited moisture convergence. Lows Sat night will be slightly milder with 50s and some upper 40s over the southern Dacks. Sufficient heating ahead of the trough passage will allow max temps to reach upper 70s and lower 80s once again with some upper 60s to mid 70s over the higher terrain. Dry weather returns Sun night with weak cold advection. Some patchy mist/fog may develop in the major valleys, if the skies clear and the winds become light.
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.LONG TERM /MONDAY THROUGH FRIDAY/... Key Message:
- Continued dry weather with above normal temps through much of next week.
Discussion:
The extended forecast features sustained dry weather with above normal temps, as a high amplitude mid and upper level ridge builds eastward from the MS River Valley, Midwest and Great Lakes Region. A surface anticyclone builds in from southeast Canada on Monday and settles over the Northeast Tue through the Thu. The mid-level pattern through the mid week continues to resemble a Rex Block with ridging over southeast Canada, the Northeast and Great Lakes Region and a closed/cut-off low over or near the mid Atlantic Region. Fair and dry weather will persist with temps running 5 to 7 degrees above normal (70s to lower 80s) and lows in the 40s to 50s with radiative mist/fog possible in the sheltered valleys several mornings next week. A cold front may move across the region with an increase of clouds on Fri with slightly cooler temps, but limited moisture with the front, as we maintained a dry forecast which may last into next weekend.
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.AVIATION /00Z SATURDAY THROUGH WEDNESDAY/... Through 00z Sunday, patchy ground fog is expected to develop after 03Z/Sat at KGFL and after 08Z/Sat at KPSF, with at least intermittent IFR/LIFR conditions expected. Some low clouds may also produce IFR/MVFR Cigs at KPOU after 10Z/Sat. Any low clouds/fog should lift after 13Z/Sat with VFR conditions then prevailing Saturday, despite increasing mid level clouds. Isolated showers may briefly produce MVFR Vsbys at KGFL, KALB and KPSF in the afternoon. Light/variable winds through daybreak should become south to southwest at 4-8 KT by late Saturday morning into the afternoon.
Outlook...
Saturday Night to Wednesday: No Operational Impact. NO SIG WX.
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.ALY WATCHES/WARNINGS/ADVISORIES... CT...None. NY...None. MA...None. VT...None.
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SYNOPSIS...Wasula SHORT TERM...Wasula LONG TERM...Wasula AVIATION...KL/Main
NWS ALY Office Area Forecast Discussion