60
Recorded events
0
Direct deaths
0
Direct injuries
$9.8M
Property damage
Flash Flood in Rensselaer County, New York: 60 recorded events between 1996 and 2023. The strongest on record measured 0. That places the county #461 nationally and #30 statewide for this hazard.
Decade by decade
Flash Flood in Rensselaer County, New York: events per decade
Reporting practice changed over time — early decades are undercounted, not calmer.
The busiest decade for flash flood in Rensselaer County is the 2010s, when 22 of the county's 60 recorded events were logged. Comparing decades is useful for spotting active periods, but the earliest years are thin because systematic reporting for this hazard began later.
Within the Rensselaer County archive, flash flood makes up 7.5% of all recorded severe weather across 9 hazard types. Nationally the county sits at #461 for this hazard and #30 within New York, putting it in the 84.9 percentile of all U.S. counties.
Seasonality
Events by month
Jul is the peak month for flash flood in Rensselaer County with 27 recorded events, while Mar is the quietest. Seasonality here is a property of the archive as much as the climate: reports cluster where population and spotter networks are densest.
Most recent
Latest recorded events
| Date | Location | Magnitude | Damage |
|---|---|---|---|
| Jul 9, 2023 | MELROSE | 0 | $5K |
| Jul 14, 2021 | MILLERS CORNER | 0 | $500K |
| Jul 14, 2021 | SAND LAKE | 0 | $500K |
| Jul 14, 2021 | EAST GREENBUSH | 0 | $200K |
| Jul 14, 2021 | EAST GREENBUSH | 0 | $0 |
| Jul 14, 2021 | EAST GREENBUSH | 0 | $50K |
| Jul 14, 2021 | WEST SAND LAKE | 0 | $500K |
| Jul 14, 2021 | TROY RENSSELAER ARPT | 0 | $500K |
| Jul 14, 2021 | EAGLE MILLS | 0 | $500K |
| Jul 14, 2021 | BRUNSWICK CENTER | 0 | $200K |
Other hazards here
More from Rensselaer County
- Thunderstorm Wind 548
- Hail 133
From the record
What the reports say
Written by National Weather Service staff at the time of the event · public domain
Very heavy rainfall from training thunderstorms led to significant urban and small stream flash flooding in and near the City of Rensselaer. A State of Emergency was declared in the City of Rensselaer as numerous roads were closed, with 6 or more feet of standing water reported on city streets. Evacuations of 50 to 75 homes occurred due to the flooding. Flooding was mainly concentrated along and near the banks of Quackenberry Creek, as well as near Mill Creek.||The Amtrak Station in Rensselaer was also closed due to the flooding.||Flash flooding also closed Routes 9 and 20, a portion of Route 151, and Luther Road, in East Greenbush.
There was a significant amount of flood damage to the northern portion of the Town of Nassau. Several roads were closed, including Burden Lake Road and Nassau-Averill Park Road. Route 66 was closed due to debris over the road at Pike's Pond.
Several inches of moving water was reported flowing over Route 43 in several locations between West Sand Lake and Averill Park. Route 66 was washed out as well north of Averill Park. Several other roads were closed or washed out in the Town of Sand Lake, including Holcomb Road, Burden Lake Road, Old Best Road, and Taborton Road.
Quick answers
Frequently asked
How many flash flood events are on record in Rensselaer County, New York?
60 flash flood events are recorded in Rensselaer County between 1996 and 2023, causing 0 direct deaths.
What is the strongest flash flood recorded in Rensselaer County?
The strongest flash flood on record in Rensselaer County measured 0.
Where does the flash flood data for Rensselaer County come from?
All events come from the NOAA/NCEI Storm Events Database, the federal public-domain archive of severe weather reports. Dates are UTC, damage is as reported and not inflation-adjusted, and the most recent entries may still be revised.
Cite this page
“Flash Flood in Rensselaer County, New York.” Severe Weather History. severeweatherhistory.com/county/new-york/rensselaer-county/flash-flood/ · Data: NOAA/NCEI, FEMA, U.S. Census — public domain.