Low pressure over the Ohio Valley allowed southeast winds out ahead of the storm system to draw in deep Atlantic moisture across Central New York. This combined with an upper level disturbance sweeping through the area produced widespread moderate to heavy rainfall.
Every event with a place to put it. Tap one for its entry below.
Deaths and injuries are direct and indirect together, as the offices filed them. Damage is property and crops in the dollars of the year, not adjusted for inflation, and only where an office estimated it.
The episode as NWS BGM wrote it up.
Low pressure over the Ohio Valley allowed southeast winds out ahead of the storm system to draw in deep Atlantic moisture across Central New York. This combined with an upper level disturbance sweeping through the area produced widespread moderate to heavy rainfall. This rain came on the heels of a heavy rain day three days prior, making it easier for additional flash flooding to develop.
The local office's own words before the first event, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.
NWS Binghamton, NY wrote its last area forecast discussion before the first event at Oct 29, 8:56 PM EST, 21 minutes earlier.
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</html>Hazardous Weather Outlook National Weather Service Binghamton NY 327 PM EDT Fri Oct 29 2021 NYZ009-015>018-023-025-036-037-044>046-055>057-062-PAZ039-040-043- 044-047-048-072-301930- Northern Oneida-Yates-Seneca-Southern Cayuga-Onondaga-Schuyler- Tompkins-Madison-Southern Oneida-Cortland-Chenango-Otsego-Tioga- Broome-Delaware-Sullivan-Susquehanna-Northern Wayne-Wyoming- Lackawanna-Luzerne-Pike-Southern Wayne- 327 PM EDT Fri Oct 29 2021 This Hazardous Weather Outlook is for central New York and northeast Pennsylvania. .DAY ONE...This afternoon and tonight. Another round of rain is moving in this afternoon, and will continue through the night. There is a potential for periods of heavy rain late tonight, which could lead to localized flooding. Areas that already experienced flooding earlier this week will be more sensitive to any additional heavy rain. .DAYS TWO THROUGH SEVEN...Saturday through Thursday. Hazardous weather is not expected at this time. .SPOTTER INFORMATION STATEMENT... Spotter activation is not expected at this time. NYZ022-024-PAZ038-301930- Steuben-Chemung-Bradford- 327 PM EDT Fri Oct 29 2021 ...FLASH FLOOD WATCH IN EFFECT THROUGH LATE TONIGHT... This Hazardous Weather Outlook is for central New York and northeast Pennsylvania. .DAY ONE...This afternoon and tonight. Please listen to NOAA Weather Radio or go to weather.gov on the Internet for more information about the following hazards. Flash Flood Watch. .DAYS TWO THROUGH SEVEN...Saturday through Thursday. Hazardous weather is not expected at this time. .SPOTTER INFORMATION STATEMENT... Spotter activation is not expected at this time.
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE BINGHAMTON NY
851 PM EDT FRI OCT 29 2021
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0845 PM HEAVY RAIN CANISTEO 42.27N 77.60W
10/29/2021 M1.30 INCH STEUBEN NY TRAINED SPOTTER
STILL HEAVY RAIN FALLING.
&&
AJGPRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE BINGHAMTON NY
928 PM EDT FRI OCT 29 2021
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0900 PM FLOOD BRANCHPORT 42.60N 77.15W
10/29/2021 YATES NY 911 CALL CENTER
FLOODED BASEMENT ON AUMICK ROAD.
&&PRELIMINARY LOCAL STORM REPORT...CORRECTED
NATIONAL WEATHER SERVICE BINGHAMTON NY
941 PM EDT FRI OCT 29 2021
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0937 PM FLOOD 3 E BURLINGTON 41.78N 76.56W
10/29/2021 BRADFORD PA 911 CALL CENTER
6-10 INCHES OF WATER CROSSING ROUTE 6 IN
BURLINGTON TOWNSHIP.
&&
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</html>The national radar mosaic for the moment the first event began.
12 flash flood. Local standard time, as filed.
Flooding overwhelmed and eroded a culvert at County Road 87 and Plaisted Road.
Flash flooding closed roads near the intersection of County Route 87 and State Route 54 in the Town of Urbana.
Flash flooding closed roads near the intersection of County Route 87 and State Route 54 in the Town of Urbana.
Flash flooding was occurring over multiple locations along State Route 226. There were numerous washouts and debris flows reported.
Water and debris over the road at Marsh Road and Church Creek Road.
Houses flooding along Coryell Road in the Town of Wayne.
Water flooding roadway in multiple locations near Grove Springs Road and Rose Road.
Water reported to be flowing over Route 417 near Eagle Inn.
Flooding was occurring over County Route 333.
Whitmore Park trailer park reported to be flooding. Damage occurring to trailers.
Flash flooding was occurring along Freeman Hollow Road at Hutches Road.
A water and debris landslide was reported across Wolf Run Road.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in New York in 2021Every state in 2021This day in weather historyWarnings in New York, October 2021
NOAA National Centers for Environmental Information, Storm Events Database, compiled from the National Weather Service’s monthly Storm Data. Complete through 2026-06; NCEI adds each month about 75 days after it ends and revises past years a few times a year. Rebuilt 2026-09-24. Each event’s entry at NCEI: 989867, 989869, 989870, 989871, 989873, 989874, 989875, 989878, 989879, 989880, 989882, 989884.