853
FXUS61 KALY 242329
AFDALY
AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE ALBANY NY
729 PM EDT THU SEP 24 2026
WHAT HAS CHANGED
NORTH/WEST SHIFT IN THE STORM TRACK WITH THE UPCOMING NOR'EASTER
THIS WEEKEND. THIS HAS RESULTED IN GREATER EXPECTED QPF, WITH
1-2" AMOUNTS SOUTH/EAST OF ALBANY AND HIGHER CONFIDENCE IN PEAK
WIND GUSTS OF 30-40 MPH. THE RAINFALL IS STILL NOT ANTICIPATED
TO CAUSE FLOODING THOUGH, AND WINDS SHOULD REMAIN BELOW ADVISORY
CRITERIA.
KEY MESSAGES
1) CONTINUED MAINLY DRY CONDITIONS WITH SLIGHTLY BELOW NORMAL
TEMPERATURES TONIGHT INTO FRIDAY MORNING.
2) FORECAST CONFIDENCE REMAINS LOW ON THE EXACT TRACK AND
TIMING OF RAINFALL WITH A NOR'EASTER FRIDAY NIGHT THROUGH THE
WEEKEND. THERE ARE MODERATE CHANCES (45-70%) OF WIND GUSTS > 35
MPH, ESPECIALLY IN HIGHER TERRAIN AREAS SOUTH AND EAST OF
ALBANY. WHILE RAINFALL AMOUNTS HAVE INCREASED TO 1-2" SOUTH AND
EAST OF ALBANY, FLOODING IS NOT EXPECTED.
DISCUSSION
KEY MESSAGE 1...
HIGH PRESSURE REMAINING CENTERED OVER SOUTHERN QUEBEC WILL
BRING CONTINUED COOL TEMPERATURES TONIGHT, ALTHOUGH NOT QUITE AS
CHILLY AS LAST NIGHT DUE TO INCREASING HIGH CLOUDS. LOWS ARE
EXPECTED TO RANGE FROM THE MID 30S IN THE W. ADIRONDACKS TO MID
40S IN THE HUDSON VALLEY. PATCHY FOG WILL LIKELY OCCUR AGAIN IN
FAVORED SHELTERED VALLEYS NEAR BODIES OF WATER.
KEY MESSAGE 2...
AN OCEAN STORM DEVELOPING WELL EAST OF N. CAROLINA TODAY, IS
EXPECTED TO STRENGTHEN AND GRADUALLY TRACK NORTH/WEST FRIDAY
THROUGH THE WEEKEND, BECOMING A NOR'EASTER. THE CENTER OF THE
CYCLONE MAY EVENTUALLY END UP ALONG OR NEAR THE LONG ISLAND TO
NJ COAST SAT INTO SUN, WHICH IS WHEN THE GREATEST IMPACTS WILL
BE IN OUR REGION. FOR A SYSTEM THAT IS ONLY A FEW DAYS AWAY,
THERE IS STILL SOMEWHAT LOW CONFIDENCE IN THE STORM TRACK AND
RESULTING RAIN/WIND IMPACTS ACROSS EASTERN NY AND WESTERN NEW
ENGLAND. OVERALL, GUIDANCE HAS TRENDED WEST WITH THE STORM
TRACK. HOWEVER, IT HAS TO BE NOTED THERE IS STILL CONSIDERABLE
SPREAD AMONG THE DETERMINISTIC AND ENSEMBLE GUIDANCE. WITH THE
FIRST HALF OF THE WEEKEND GETTING INTO THE CAMS TIME WINDOW,
SOME CAMS (HRRR, NAM12, RGEM) AND SOME DETERMINISTIC GUIDANCE
(ECMWF, AI-ECMWF, GFS) FAVOR A MORE WESTERLY STORM TRACK
COMPARED TO THE ENSEMBLE MEANS FROM THE ECMWF, GEFS AND
DETERMINISTIC CMC AND AI-GFS, WHICH ARE DISPLACED TO THE EAST.
EVEN ENSEMBLES AND AI GUIDANCE HAVE TRENDED SLIGHTLY WEST TOO.
THE TRACK WILL ULTIMATELY DETERMINE MAGNITUDE OF IMPACTS IN OUR
AREA. THAT BEING SAID, AT THIS TIME WE ARE NOT ANTICIPATING ANY
FLOODING OR WIND HEADLINES. FORECAST RAINFALL HAS INCREASED
COMPARED TO YESTERDAY, WITH AROUND 0.50-1.25" FROM AROUND
CAPITAL DISTRICT AND S. VT SOUTH AND 1.25-2.00" IN SE BERKSHIRE,
DUTCHESS AND LITCHFIELD COUNTIES. THERE IS STILL SOMEWHAT LOW
CONFIDENCE IN THESE AMOUNTS THOUGH. LATEST NBM PROBS FOR > 1.0"
IN THE 48 HR PERIOD ENDING 8 AM MON HAVE INCREASED TO AROUND
50-75% FROM THE CAPITAL DISTRICT SOUTH/EAST, WITH A 20-45%
CHANCE OF > 2.00". EVEN WITH THE INCREASED QPF, ENSEMBLE RIVER
GUIDANCE IS NOT INDICATING ANY FLOODING FROM RAINFALL THROUGH
THE STORM, AS SEVERAL DAYS OF DRY/SUNNY WEATHER IS PRECEDING THE
STORM. THERE MAY BE A BRIEF PERIOD OF MINOR TIDAL FLOODING
ALONG THE HUDSON RIVER AT POUGHKEEPSIE SAT NIGHT INTO EARLY SUN.
SOME URBAN/POOR DRAINAGE PONDING MAY ALSO OCCUR. SHOULD THE
STORM TRACK SHIFT FARTHER NORTHWEST AND RAINFALL AMOUNTS
INCREASE, THE THREAT OF MORE HYDRO IMPACTS WOULD INCREASE.
NORTHERLY WINDS WILL INCREASE ON THE NORTH/WEST PERIPHERY OF
THE COASTAL STORM FRI THROUGH SAT AS THE PRESSURE GRADIENT AND
WINDS ALOFT STRENGTHEN STEADILY. NOTING A SIGNIFICANT INVERSION
IN THE 3000-5000 FT LAYER FROM FORECAST SOUNDINGS, WITH THE
STRONGEST WINDS ALOFT NEAR OR ABOVE THE INVERSION LEVEL. SO
STRONG/DAMAGING WINDS NOT ANTICIPATED, ALTHOUGH FREQUENT GUSTS
IN THE 30-40 MPH RANGE ARE EXPECTED IN THE FRI-SUN TIMEFRAME
MAINLY FOR AREAS SOUTH/EAST OF ALBANY. LATEST NBM PROBABILITIES
FOR > 35 MPH GUSTS ARE 45-70% FROM THE E. CATSKILLS INTO THE
HIGHER TERRAIN OF W. MA, NW. CT AND THE RENSSELAER PLATEAU. THE
PROBABILITY FOR MORE IMPACTFUL GUSTS OF > 45 MPH ARE MUCH LOWER
AT 5-20% IN SOME OF THESE SAME AREAS, SO WIND ADVISORIES ARE NOT
ANTICIPATED.
THE CYCLONE WILL WEAKEN ON MON, BUT WILL ONLY SLOWLY MEANDER
EAST. ALSO WITH THE THE UPPER TROUGH STILL OVER THE REGION,
SCATTERED SHOWERS AND MOSTLY CLOUDY CONDITIONS SHOULD LINGER.
AVIATION /00Z FRIDAY THROUGH TUESDAY/
THROUGH 00Z/SATURDAY, MAINLY VFR CONDITIONS ARE EXPECTED THROUGH
THE PERIOD WITH INCREASING HIGH CLOUDS. HOWEVER, PATCHY GROUND
FOG COULD PRODUCE BRIEF PERIODS OF IFR VSBYS AT KGFL OVERNIGHT,
ESPECIALLY BETWEEN 07Z-09Z/FRI. OVERALL, EXTENT OF FOG/LOW
CLOUDS SHOULD BE LESS THAN LAST NIGHT.
WINDS WILL BE NORTH TO NORTHEAST AT LESS THAN 8 KT OVERNIGHT,
THEN WILL INCREASE TO 8-15 KT WITH SOME GUSTS UP TO 25 KT
POSSIBLE LATE FRIDAY MORNING THROUGH MID AFTERNOON, WITH
STRONGEST GUST POTENTIAL AT KPSF AND KPOU. GUSTS SHOULD DIMINISH
AFTER 22Z/FRI. LOW LEVEL WIND SHEAR IS EXPECTED LATE TONIGHT AT
KPOU AND KPSF, AS SURFACE WINDS REMAIN NORTH-NORTHEAST AT LESS
THAN 5-8 KT, WHILE WINDS AROUND 2000 FT AGL INCREASE FROM THE
NORTHEAST TO 30-35 KT. LOW LEVEL WIND SHEAR SHOULD DIMINISH
BETWEEN 13Z-15Z/FRI.
OUTLOOK...
FRIDAY NIGHT: MODERATE OPERATIONAL IMPACT. BREEZY. CHANCE OF SHRA...RA.
SATURDAY: HIGH OPERATIONAL IMPACT. BREEZY. LIKELY RA.
SATURDAY NIGHT: HIGH OPERATIONAL IMPACT. BREEZY. LIKELY RA.
SUNDAY: HIGH OPERATIONAL IMPACT. BREEZY. LIKELY RA.
SUNDAY NIGHT: HIGH OPERATIONAL IMPACT. BREEZY. LIKELY SHRA.
MONDAY: MODERATE OPERATIONAL IMPACT. CHANCE OF SHRA.
MONDAY NIGHT: LOW OPERATIONAL IMPACT. SLIGHT CHANCE OF SHRA.
TUESDAY: NO OPERATIONAL IMPACT. NO SIG WX.
ALY WATCHES/WARNINGS/ADVISORIES
CT...NONE.
NY...NONE.
MA...NONE.
VT...NONE.
DISCUSSION...07
AVIATION...24
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