Wiz, are you seeing what's happening around Albany?
Looking at the ARI chart for the Albany area, for a 24 hour period a 500yr ARI is about 8.25" and 9.25" for 1000yr ARI. At a 90% confidence interval--so the ranges are a bit broader.
https://hdsc.nws.noaa.gov/pfds/pfds_map_cont.html?bkmrk=ct