67
Recorded events
2
Direct deaths
0
Direct injuries
$175.6M
Property damage
Flash Flood in Sullivan County, New York: 67 recorded events between 1996 and 2023. The strongest on record measured 0. That places the county #369 nationally and #20 statewide for this hazard.
Decade by decade
Flash Flood in Sullivan County, New York: events per decade
Reporting practice changed over time — early decades are undercounted, not calmer.
The busiest decade for flash flood in Sullivan County is the 2000s, when 27 of the county's 67 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 Sullivan County archive, flash flood makes up 12.2% of all recorded severe weather across 8 hazard types. Nationally the county sits at #369 for this hazard and #20 within New York, putting it in the 87.8 percentile of all U.S. counties.
Seasonality
Events by month
Jul is the peak month for flash flood in Sullivan County with 16 recorded events, while Feb 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.
Significant events
Deadliest on record
| Date | Location | Scale | Deaths | Injuries | Damage |
|---|---|---|---|---|---|
| Oct 1, 2010 | ROCKLAND | 0 | 1 | 0 | $10K |
| Jun 27, 2006 | NORTH PORTION | 0 | 1 | 0 | $100.0M |
Most recent
Latest recorded events
| Date | Location | Magnitude | Damage |
|---|---|---|---|
| Dec 18, 2023 | BLOOMINGBURG | 0 | $20K |
| Oct 26, 2021 | ROSCOE | 0 | $5K |
| Oct 26, 2021 | LIVINGSTON MANOR | 0 | $5K |
| Oct 26, 2021 | JEFFERSONVILLE | 0 | $5K |
| Oct 26, 2021 | CALLICOON | 0 | $5K |
| Oct 26, 2021 | HORTONVILLE | 0 | $5K |
| Oct 26, 2021 | KENOZA LAKE | 0 | $20K |
| Oct 26, 2021 | JEFFERSONVILLE | 0 | $5K |
| Sep 2, 2021 | HARRIS | 0 | $5K |
| Sep 2, 2021 | HURLEYVILLE | 0 | $3K |
Other hazards here
More from Sullivan County
- Thunderstorm Wind 326
- Hail 119
From the record
What the reports say
Written by National Weather Service staff at the time of the event · public domain
Heavy rain caused flooding of numerous roads throughout the county, including Rockland. A vehicle fatality occurred at about 5:00 AM on the morning of October 1st in the Town of Neversink. The driver was traveling to work and was swept by floodwaters into Willowemoc Creek. The body of the 55 year old woman was found the next morning along the shore of the Neversink Reservoir.
Heavy rain caused flash flooding. Numerous roads were flooded. Reports of power poles being washed out of the ground. One residence was undermined enough to partially collapse. Evacuations took place. Rainfall amounts were 1 to 4 inches.
Heavy rain with amounts of 3 to 6 inches caused flash flooding. The heaviest amounts were at the highest elevations in the northwest section of the county. The rain which fell from the 16th to the 18th was due to the remnants of hurricane Ivan. Most streams and creeks went out of their banks. In addition, the Delaware River had major flooding. 300 homes and at least a dozen businesses had damage. Several campgrounds were completely wiped out. Livingston Manor was completely flooded. Across the county 1200 people were evacuated. 10 people were rescued in Roscoe and 19 in Callicoon.
Quick answers
Frequently asked
How many flash flood events are on record in Sullivan County, New York?
67 flash flood events are recorded in Sullivan County between 1996 and 2023, causing 2 direct deaths.
What is the strongest flash flood recorded in Sullivan County?
The strongest flash flood on record in Sullivan County measured 0.
Where does the flash flood data for Sullivan 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 Sullivan County, New York.” Severe Weather History. severeweatherhistory.com/county/new-york/sullivan-county/flash-flood/ · Data: NOAA/NCEI, FEMA, U.S. Census — public domain.