Area Forecast Discussion
Issued by NWS Albany, NY
Issued by NWS Albany, NY
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369 FXUS61 KALY 301912 AFDALY Area Forecast Discussion National Weather Service Albany NY 312 PM EDT Thu Jul 30 2026 .WHAT HAS CHANGED... There is a Marginal (level 1 of 4) Risk of Excessive Rainfall for eastern New York Sunday into early Monday. && .KEY MESSAGES... 1) Residual flooding of some stream and roads continues into this evening for southern portions of the Capital District and northern portions of the mid Hudson Valley. 2) Showers and thunderstorms return Sunday afternoon into Monday. There is potential for locally heavy rainfall and isolated flash flooding in some areas. && .DISCUSSION... KEY MESSAGE 1... Most of the Flood Warnings have been allowed to expire. There is one last Flood Warning in effect for residual flooding/road closures in SE Albany, SW Rensselaer, NE Greene and NW/central Columbia counties through 630 PM. Water levels will continue to gradually recede. No additional river flooding is anticipated. Scattered showers this afternoon into this evening will be generally light and will not lead to any additional flooding. There may be a few brief/isolated downpours, but not widespread enough to cause any hydro concerns. The showers should gradually dissipate tonight as the storm system finally pulls farther away. KEY MESSAGE 2... Other than an isolated/brief shower or T-storm north/east of Albany on Friday, dry conditions are expected to persist through Sunday morning as high pressure moves across the area. The next chance for more widespread showers/T-storms arrives Sunday afternoon into Monday as a cold front and upper level trough move east across our area, associated with a cyclone tracking NE across the St. Lawrence Valley. Most of the global/AI guidance have more of a progressive northern stream system, as the upper trough splits with the southern piece tracking well south of our area. This is the most likely scenario at this time. While the system is expected to be progressive, PWAT anomalies increase to +1 to +2 STDEV along with at least some modest instability. So convective elements will likely be embedded in any areas of showers Sun P.M. into Mon. Areas where there are any persistent or repeated downpours could see renewed flooding, especially in locations that received heavy rainfall from this past storm. NBM probabilities for > 1.00" of rain are around 30-60% north/west of Albany, however embedded convection could result in 1-2+" in some spots. Also, soils will still be mostly saturated from the extreme rainfall this week so it won`t take much to result in flash flooding in some areas. Timing has shifted slower to Sunday night, which could limit convection, so WPC has scaled back to a Marginal Risk (level 1 of 4) for eastern New York with the afternoon update. Will continue to monitor trends. && .AVIATION /19Z THURSDAY THROUGH TUESDAY/... Through 18z/Fri...Surface and upper level low pressure systems continue to slowly drift eastward toward the New England coast during the upcoming TAF period. These features will remain close enough to bring isolated to scattered showers this afternoon which can briefly reduce vsbys to MVFR at times. Otherwise, mixed MVFR/VFR cigs are expected this afternoon with any IFR cigs at KPOU lifting shortly after 18z/Thu. Clouds will decrease tonight with showers ending which will increase the potential for widespread fog, some dense, at all sites. Any fog lifts after 12z/Fri with the return to VFR conditions. Northerly winds around 10 kt will become light to calm tonight, then northwesterly at 4-8 kt on Friday. Outlook... Friday Night: No Operational Impact. NO SIG WX. Saturday: No Operational Impact. NO SIG WX. Saturday Night: No Operational Impact. NO SIG WX. Sunday: Moderate Operational Impact. Chance of SHRA...TSRA. Sunday Night: High Operational Impact. Definite SHRA...TSRA. Monday: Moderate Operational Impact. Chance of SHRA...TSRA. Monday Night: No Operational Impact. NO SIG WX. Tuesday: No Operational Impact. NO SIG WX. && .ALY WATCHES/WARNINGS/ADVISORIES... CT...None. NY...None. MA...None. VT...None. && $$ DISCUSSION...07 AVIATION...33