Alert archive / New York / Flash Flood Warnings in 2026
Flash Flood Warning 17, NWS Buffalo, NY
NWS Buffalo, NY issued this flash flood warning at Sep 3, 2026, 7:27 PM EDT for Erie County, New York. It was in force for 4 hr. 11 reports came from inside the area while it was in force.
The area
The outline as issued, with what was reported inside it.
The facts
- Issued
- Sep 3, 2026, 7:27 PM EDT (23:27 UTC)
- Expired
- Sep 3, 2026, 11:22 PM EDT
- In force
- 4 hr
- Issued by
- NWS Buffalo, NY
- Area
- Storm-based polygon
- Flood severity
- None
County Erie County, NY
The radar
The Buffalo radar (KBUF), 5 km from the middle of the area, began a volume at 23:29 UTC, the scan nearest the moment this went out.
Open the radar archive at this moment
The archived warnings, watches and discussions in force at that minute are drawn over the scan, this one among them.
What was reported inside it
| Time | Report | Where | Remark |
|---|---|---|---|
| Sep 3, 7:45 PM EDT | FLASH FLOOD | 1 S Kenmore, NY | 3 water rescues at Linden Ave. and Delaware Ave. Water up to car doors. |
| Sep 3, 7:45 PM EDT | FLASH FLOOD | Kenmore, NY | 2.26 inches of rain in an hour from 6:45 to 7:45. Water over the curb on Wardman Road. |
| Sep 3, 7:47 PM EDT | FLASH FLOOD | 1 N Depew, NY | Report from mPING: Street/road flooding; Street/road closed; Vehicles stranded. |
| Sep 3, 7:50 PM EDT | FLASH FLOOD | 2 Sse Kenmore, NY | Parkside Avenue, Linden Avenue, Elmwood Avenue and Hertel Avenue closed due to flooding. |
| Sep 3, 7:50 PM EDT | FLASH FLOOD | 2 Sse Kenmore, NY | 2 water rescues at underpass at Linden Ave. and Colvin Ave. |
| Sep 3, 7:54 PM EDT | FLASH FLOOD | 2 W Tonawanda, NY | Ramp I-190 South To I-290 East is closed. Additional lanes on the 190 are blocked by standing water. |
| Sep 3, 8:15 PM EDT | FLASH FLOOD | Depew, NY | Transit Road closed from Walden to Broadway due to flooding. |
| Sep 3, 8:30 PM EDT | FLASH FLOOD | 1 Sse Kenmore, NY | Several inches of water flowing over Virgil Avenue creating widespread flooding along the street. |
| Sep 3, 8:36 PM EDT | FLASH FLOOD | 1 N Cheektowaga, NY | Route 33 West is closed from Genesee to Union Road due to flooding. |
| Sep 3, 9:00 PM EDT | FLASH FLOOD | 2 Nnw Cheektowaga, NY | Several On/Off ramps closed at the I-90 and Route 33 interchange. |
| Sep 3, 9:00 PM EDT | RAIN 3.29 | 1 Nw Kenmore, NY | Fell in 2 1/2 hours. |
Local storm reports filed while the alert was in force, from inside its polygon or its counties.
The nearest sounding before it
Buffalo Intl Airport, NY (KBUF), launched 12:00Z, 11.5 hours before the alert went out and 9 km from the middle of its area. This is the routine balloon launch nearest before it, the air the forecaster had in hand, not a measurement taken for the alert.
- Mixed-layer CAPE
- 243 J/kg
- Mixed-layer CIN
- -109 J/kg
- Mixed-layer LCL
- 801 m above ground
- 0-6 km bulk shear
- 50 kt
- 0-1 km storm-relative helicity
- 45 m²/s²
- 0-3 km storm-relative helicity
- 99 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.4
The text
As transmitted.
900
WGUS51 KBUF 032327
FFWBUF
NYC029-040330-
/O.NEW.KBUF.FF.W.0017.260903T2327Z-260904T0330Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
BULLETIN - EAS ACTIVATION REQUESTED
Flash Flood Warning
National Weather Service Buffalo NY
727 PM EDT Thu Sep 3 2026
The National Weather Service in Buffalo has issued a
* Flash Flood Warning for...
Northern Erie County in western New York...
* Until 1130 PM EDT.
* At 727 PM EDT, Doppler radar indicated thunderstorms producing
heavy rain across the warned area. Between 1 and 2 inches of rain
have fallen. Additional rainfall amounts of 0.5 to 1 inch are
possible in the warned area. Flash flooding is ongoing or expected
to begin shortly.
HAZARD...Flash flooding caused by thunderstorms.
SOURCE...Radar indicated.
IMPACT...Flash flooding of small creeks and streams, urban areas,
highways, streets and underpasses as well as other poor
drainage and low-lying areas.
* Some locations that will experience flash flooding include...
Buffalo, Cheektowaga, Kenmore, Depew, Amherst, Tonawanda,
Lancaster, Williamsville and Grand Island.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Turn around, don't drown when encountering flooded roads. Most flood
deaths occur in vehicles.
Be aware of your surroundings and do not drive on flooded roads.
&&
LAT...LON 4301 7902 4301 7898 4302 7898 4301 7896
4301 7890 4302 7888 4299 7862 4297 7860
4297 7855 4294 7852 4292 7852 4292 7851
4289 7851 4288 7855 4292 7887 4293 7887
4293 7891 4296 7893 4296 7896 4299 7901
FLASH FLOOD...RADAR INDICATED
$$
JJR3 follow-up statements
192
WGUS71 KBUF 032342
FFSBUF
Flash Flood Statement
National Weather Service Buffalo NY
742 PM EDT Thu Sep 3 2026
NYC029-040330-
/O.CON.KBUF.FF.W.0017.000000T0000Z-260904T0330Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Erie NY-
742 PM EDT Thu Sep 3 2026
...FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 1130 PM EDT THIS
EVENING FOR NORTHEASTERN ERIE COUNTY...
At 742 PM EDT, Trained weather spotters reported thunderstorms
producing heavy rain across the warned area. Between 1.5 and 2.5
inches of rain have fallen. Additional rainfall amounts of 0.5 to 1
inch are possible in the warned area. Flash flooding is already
occurring.
HAZARD...Life threatening flash flooding. Thunderstorms producing
flash flooding.
SOURCE...Trained spotters reported.
IMPACT...Life threatening flash flooding of creeks and streams, urban
areas, highways, streets and underpasses.
Some locations that will experience flash flooding include...
Buffalo, Cheektowaga, Kenmore, Depew, Amherst, Tonawanda,
Lancaster, Williamsville and Grand Island.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Turn around, don't drown when encountering flooded roads. Most flood
deaths occur in vehicles.
Be aware of your surroundings and do not drive on flooded roads.
&&
LAT...LON 4301 7902 4301 7898 4302 7898 4301 7896
4301 7890 4302 7888 4299 7862 4297 7860
4297 7855 4294 7852 4292 7852 4292 7851
4289 7851 4288 7855 4292 7887 4293 7887
4293 7891 4296 7893 4296 7896 4299 7901
FLASH FLOOD...OBSERVED
FLASH FLOOD DAMAGE THREAT...CONSIDERABLE
$$
JJR284
WGUS71 KBUF 040146
FFSBUF
Flash Flood Statement
National Weather Service Buffalo NY
946 PM EDT Thu Sep 3 2026
NYC029-040330-
/O.CON.KBUF.FF.W.0017.000000T0000Z-260904T0330Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Erie NY-
946 PM EDT Thu Sep 3 2026
...FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 1130 PM EDT THIS
EVENING FOR NORTHERN ERIE COUNTY...
At 946 PM EDT, while the heavy rain that produced between 2 and 3.5
inches of rain within the warned area earlier this evening has since
ended. local law enforcement reported that some area roadways remain
flooded. Flooding impacts will continue for a while longer, but no
additional rainfall is expected.
HAZARD...Flash flooding caused by thunderstorms.
SOURCE...Law enforcement reported.
IMPACT...Flash flooding of small creeks and streams, urban areas,
highways, streets and underpasses as well as other poor
drainage and low-lying areas.
Some locations that will experience flash flooding include...
Buffalo, Cheektowaga, Kenmore, Depew, Amherst, Tonawanda,
Lancaster, Williamsville and Grand Island.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Turn around, don't drown when encountering flooded roads. Most flood
deaths occur in vehicles.
Be aware of your surroundings and do not drive on flooded roads.
&&
LAT...LON 4301 7902 4301 7898 4302 7898 4301 7896
4301 7890 4302 7888 4299 7862 4297 7860
4297 7855 4294 7852 4292 7852 4292 7851
4289 7851 4288 7855 4292 7887 4293 7887
4293 7891 4296 7893 4296 7896 4299 7901
FLASH FLOOD...OBSERVED
$$
JJR658
WGUS71 KBUF 040322
FFSBUF
Flash Flood Statement
National Weather Service Buffalo NY
1122 PM EDT Thu Sep 3 2026
NYC029-040332-
/O.CAN.KBUF.FF.W.0017.000000T0000Z-260904T0330Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Erie NY-
1122 PM EDT Thu Sep 3 2026
...FLASH FLOOD WARNING IS CANCELLED FOR NORTHERN ERIE COUNTY...
The heavy rain has long since ended, and flooding is no longer
expected to pose a threat. Please continue to heed remaining road
closures.
&&
LAT...LON 4301 7902 4301 7898 4302 7898 4301 7896
4301 7890 4302 7888 4299 7862 4297 7860
4297 7855 4294 7852 4292 7852 4292 7851
4289 7851 4288 7855 4292 7887 4293 7887
4293 7891 4296 7893 4296 7896 4299 7901
$$
JJRThe office that day
Everything else NWS Buffalo, NY issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Sep 2, 8:07 PM EDT | Special Marine Warning | BUF | 53 min | |
| Sep 2, 8:13 PM EDT | Special Marine Warning | BUF | 47 min | |
| Sep 2, 8:46 PM EDT | Flash Flood Warning | BUF | Allegany, Cattaraugus | 4 hr |
| Sep 2, 8:55 PM EDT | Special Marine Warning | BUF | 95 min | |
| Sep 2, 8:59 PM EDT | Severe Thunderstorm Warning | BUF | Jefferson | 63 min |
| Sep 2, 9:04 PM EDT | Special Marine Warning | BUF | 56 min | |
| Sep 2, 9:09 PM EDT | Severe Thunderstorm Warning | BUF | Allegany, Cattaraugus | 36 min |
| Sep 2, 9:50 PM EDT | Areal Flood Warning | BUF | Monroe | 14 hr |
| Sep 2, 10:00 PM EDT | Special Marine Warning | BUF | 90 min | |
| Sep 2, 10:00 PM EDT | Severe Thunderstorm Warning | BUF | Cattaraugus, Chautauqua | 75 min |
| Sep 2, 10:17 PM EDT | Severe Thunderstorm Warning | BUF | Allegany | 43 min |
| Sep 2, 11:23 PM EDT | Areal Flood Warning | BUF | Orleans | 10 hr |
Nearby
Flash Flood Warnings in New York, 2026Every flash flood warning in 2026
Sources
The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.