Alert archive / New York / Flash Flood Warnings in 2026
Flash Flood Warning 15, NWS Buffalo, NY
NWS Buffalo, NY issued this flash flood warning at Sep 2, 2026, 7:26 PM EDT for 4 counties in New York. It was in force for 4 hr. 1 report 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 2, 2026, 7:26 PM EDT (23:26 UTC)
- Expired
- Sep 2, 2026, 11:30 PM EDT
- In force
- 4 hr
- Issued by
- NWS Buffalo, NY
- Area
- Storm-based polygon
- Flood severity
- None
Counties Erie County, NY, Genesee County, NY, Niagara County, NY, Orleans County, NY
The radar
The Buffalo radar (KBUF), 48 km from the middle of the area, began a volume at 23:27 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 2, 8:00 PM EDT | FLASH FLOOD | Albion, NY | Road closed due to water over roadway. |
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, 11.4 hours before the alert went out and 48 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
- 1578 J/kg
- Mixed-layer CIN
- -57 J/kg
- Mixed-layer LCL
- 829 m above ground
- 0-6 km bulk shear
- 60 kt
- 0-1 km storm-relative helicity
- 117 m²/s²
- 0-3 km storm-relative helicity
- 124 m²/s²
- Significant tornado parameter
- 1.3
- Supercell composite
- 6.2
The text
As transmitted.
396
WGUS51 KBUF 022326
FFWBUF
NYC029-037-063-073-030330-
/O.NEW.KBUF.FF.W.0015.260902T2326Z-260903T0330Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
BULLETIN - EAS ACTIVATION REQUESTED
Flash Flood Warning
National Weather Service Buffalo NY
726 PM EDT Wed Sep 2 2026
The National Weather Service in Buffalo has issued a
* Flash Flood Warning for...
Northeastern Erie County in western New York...
Northwestern Genesee County in western New York...
Eastern Niagara County in western New York...
Orleans County in western New York...
* Until 1130 PM EDT.
* At 726 PM EDT, Doppler radar indicated 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 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...
Lockport, Medina, Albion, Newfane, Pendleton, Byron, Middleport,
Oakfield, Holley, Waterport, Lakeside Beach State Park, Point
Breeze, Kent, Ridgeway, Shelby, Clarendon, Gaines, Kendall and
Alabama.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Turn around, don't drown when encountering flooded roads. Most flood
deaths occur in vehicles.
Be especially cautious at night when it is harder to recognize the
dangers of flooding.
Flooding is occurring or is imminent. It is important to know where
you are relative to streams, rivers, or creeks which can become
killers in heavy rains. Campers and hikers should avoid streams or
creeks.
&&
LAT...LON 4333 7879 4335 7879 4340 7860 4341 7829
4339 7799 4337 7799 4337 7800 4317 7800
4302 7808 4304 7874
FLASH FLOOD...RADAR INDICATED
$$
Thomas2 follow-up statements
884
WGUS71 KBUF 030135
FFSBUF
Flash Flood Statement
National Weather Service Buffalo NY
935 PM EDT Wed Sep 2 2026
NYC029-037-063-073-030330-
/O.CON.KBUF.FF.W.0015.000000T0000Z-260903T0330Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Erie NY-Genesee NY-Niagara NY-Orleans NY-
935 PM EDT Wed Sep 2 2026
...FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 1130 PM EDT THIS
EVENING FOR NORTHEASTERN ERIE, NORTHWESTERN GENESEE, EASTERN NIAGARA
AND ORLEANS COUNTIES...
At 935 PM EDT, emergency management reported thunderstorms producing
heavy rain across the warned area. Between 2 and 3 inches of rain
have fallen, especially across eastern Niagara County and Orleans
counties. Additional rainfall amounts of 0.25 to 0.5 inches are
possible in the warned area. Flash flooding is ongoing or expected to
begin shortly.
HAZARD...Flash flooding caused by thunderstorms.
SOURCE...Emergency management reported several roads closed through
Orleans and eastern Niagara counties.
IMPACT...Flash flooding of small creeks and streams, urban areas,
highways, streets and underpasses as well as other poor
drainage and low-lying areas.
Some locations that will experience flash flooding include...
Lockport, Medina, Albion, Newfane, Pendleton, Byron, Middleport,
Oakfield, Holley, Waterport, Lakeside Beach State Park, Point
Breeze, Kent, Ridgeway, Shelby, Clarendon, Gaines, Kendall and
Alabama.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Turn around, don't drown when encountering flooded roads. Most flood
deaths occur in vehicles.
Be especially cautious at night when it is harder to recognize the
dangers of flooding.
Flooding is occurring or is imminent. It is important to know where
you are relative to streams, rivers, or creeks which can become
killers in heavy rains. Campers and hikers should avoid streams or
creeks.
&&
LAT...LON 4333 7879 4335 7879 4340 7860 4341 7829
4339 7799 4337 7799 4337 7800 4317 7800
4302 7808 4304 7874
FLASH FLOOD...OBSERVED
$$
Thomas087
WGUS71 KBUF 030326
FFSBUF
Flash Flood Statement
National Weather Service Buffalo NY
1126 PM EDT Wed Sep 2 2026
NYC029-037-063-073-030336-
/O.EXP.KBUF.FF.W.0015.000000T0000Z-260903T0330Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Erie NY-Genesee NY-Niagara NY-Orleans NY-
1126 PM EDT Wed Sep 2 2026
...FLASH FLOOD WARNING WILL EXPIRE AT 1130 PM EDT THIS EVENING FOR
NORTHEASTERN ERIE, NORTHWESTERN GENESEE, EASTERN NIAGARA AND ORLEANS
COUNTIES...
The flash flood warning has been replaced with an areal flood warning
for Orleans County through late tomorrow morning. Please continue to
heed remaining road closures.
&&
LAT...LON 4333 7879 4335 7879 4340 7860 4341 7829
4339 7799 4337 7799 4337 7800 4317 7800
4302 7808 4304 7874
$$
ThomasThe office that day
Everything else NWS Buffalo, NY issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Sep 2, 6:24 AM EDT | Special Marine Warning | BUF | 66 min | |
| Sep 2, 6:26 AM EDT | Special Marine Warning | BUF | 94 min | |
| Sep 2, 6:46 AM EDT | Special Marine Warning | BUF | 68 min | |
| Sep 2, 7:18 AM EDT | Severe Thunderstorm Warning | BUF | Erie, Genesee, Monroe, Niagara, Orleans, Wyoming | 57 min |
| Sep 2, 7:40 AM EDT | Severe Thunderstorm Warning | BUF | Allegany, Cattaraugus, Erie, Livingston, Wyoming | 50 min |
| Sep 2, 7:59 AM EDT | Special Marine Warning | BUF | 91 min | |
| Sep 2, 8:18 AM EDT | Severe Thunderstorm Warning | BUF | Erie, Genesee, Livingston, Monroe, Niagara, Ontario and 2 more | 57 min |
| Sep 2, 8:40 AM EDT | Severe Thunderstorm Warning | BUF | Erie, Genesee, Livingston, Monroe, Ontario, Wyoming | 65 min |
| Sep 2, 9:16 AM EDT | Severe Thunderstorm Warning | BUF | Cayuga, Oswego, Wayne | 59 min |
| Sep 2, 9:28 AM EDT | Special Marine Warning | BUF | 62 min | |
| Sep 2, 5:18 PM EDT | Special Marine Warning | BUF | 117 min | |
| Sep 2, 5:32 PM EDT | Severe Thunderstorm Warning | BUF | Allegany, Livingston, Wyoming | 58 min |
| Sep 2, 5:43 PM EDT | Severe Thunderstorm Warning | BUF | Erie, Genesee, Monroe, Niagara, Orleans | 77 min |
| Sep 2, 6:07 PM EDT | Tornado Warning | BUF | Niagara, Orleans | 23 min |
| Sep 2, 6:15 PM EDT | Special Marine Warning | BUF | 2 hr | |
| Sep 2, 6:17 PM EDT | Severe Thunderstorm Warning | BUF | Allegany, Livingston, Monroe, Ontario, Wyoming | 58 min |
| Sep 2, 6:21 PM EDT | Special Marine Warning | BUF | 114 min | |
| Sep 2, 6:28 PM EDT | Tornado Warning | BUF | Genesee, Niagara, Orleans | 32 min |
| Sep 2, 6:47 PM EDT | Severe Thunderstorm Warning | BUF | Erie, Genesee, Livingston, Monroe, Niagara, Orleans and 1 more | 73 min |
| Sep 2, 6:51 PM EDT | Severe Thunderstorm Warning | BUF | Monroe, Ontario, Wayne | 54 min |
| Sep 2, 6:55 PM EDT | Tornado Warning | BUF | Genesee, Monroe, Orleans | 35 min |
| Sep 2, 7:04 PM EDT | Special Marine Warning | BUF | 116 min | |
| Sep 2, 7:14 PM EDT | Special Marine Warning | BUF | 43 min | |
| Sep 2, 7:28 PM EDT | Tornado Warning | BUF | Genesee, Livingston, Monroe, Wyoming | 47 min |
| Sep 2, 7:30 PM EDT | Severe Thunderstorm Warning | BUF | Allegany, Cattaraugus, Chautauqua, Erie, Wyoming | 60 min |
| Sep 2, 7:40 PM EDT | Severe Thunderstorm Warning | BUF | Cayuga, Genesee, Livingston, Monroe, Ontario, Oswego and 2 more | 65 min |
| Sep 2, 7:56 PM EDT | Severe Thunderstorm Warning | BUF | Allegany, Cattaraugus, Chautauqua, Livingston, Wyoming | 79 min |
| Sep 2, 7:56 PM EDT | Tornado Warning | BUF | Allegany, Livingston, Wyoming | 34 min |
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.