Alert archive / New York / Flash Flood Warnings in 2026
Flash Flood Warning 20, NWS Buffalo, NY
NWS Buffalo, NY issued this flash flood warning at Sep 13, 2026, 3:46 PM EDT for Niagara County, New York. It was in force for 4 hr. 2 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 13, 2026, 3:46 PM EDT (19:46 UTC)
- Expired
- Sep 13, 2026, 7:24 PM EDT
- In force
- 4 hr
- Issued by
- NWS Buffalo, NY
- Area
- Storm-based polygon
- Flood severity
- None
County Niagara County, NY
The radar
The Buffalo radar (KBUF), 20 km from the middle of the area, began a volume at 19:45 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 13, 3:56 PM EDT | FLASH FLOOD | 2 Sse Lockport, NY | Royal Parkway and Parkwood Dr. impassible due to flooding. |
| Sep 13, 4:15 PM EDT | FLASH FLOOD | 2 Sse Lockport, NY | Flooding at Amy Lane and Angela Drive. |
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, 7.8 hours before the alert went out and 21 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
- 598 J/kg
- Mixed-layer CIN
- -6 J/kg
- Mixed-layer LCL
- 566 m above ground
- 0-6 km bulk shear
- 31 kt
- 0-1 km storm-relative helicity
- 60 m²/s²
- 0-3 km storm-relative helicity
- 72 m²/s²
- Significant tornado parameter
- 0.1
- Supercell composite
- 1.0
The text
As transmitted.
865
WGUS51 KBUF 131946
FFWBUF
NYC063-132345-
/O.NEW.KBUF.FF.W.0020.260913T1946Z-260913T2345Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
BULLETIN - EAS ACTIVATION REQUESTED
Flash Flood Warning
National Weather Service Buffalo NY
346 PM EDT Sun Sep 13 2026
The National Weather Service in Buffalo has issued a
* Flash Flood Warning for...
Southern Niagara County in western New York...
* Until 745 PM EDT.
* At 346 PM EDT, Doppler radar indicated thunderstorms producing
heavy rain across the warned area. Between 1.5 and 2 inches of rain
have fallen. Additional rainfall amounts of 1 to 1.5 inches 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, Pendleton, Sanborn, Rapids, Pendleton Center, Gasport and
Wolcottsville.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Turn around, don't drown when encountering flooded roads. Most flood
deaths occur in vehicles.
Keep children away from storm drains, culverts, creeks and streams.
Water levels can rise rapidly and sweep children away.
&&
LAT...LON 4316 7893 4319 7869 4318 7846 4313 7847
4310 7847 4310 7856 4309 7863 4309 7864
4310 7864 4309 7869 4307 7893
FLASH FLOOD...RADAR INDICATED
$$
Hitchcock1 follow-up statement
032
WGUS71 KBUF 132324
FFSBUF
Flash Flood Statement
National Weather Service Buffalo NY
724 PM EDT Sun Sep 13 2026
NYC063-132334-
/O.CAN.KBUF.FF.W.0020.000000T0000Z-260913T2345Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Niagara NY-
724 PM EDT Sun Sep 13 2026
...FLASH FLOOD WARNING IS CANCELLED FOR SOUTHEASTERN NIAGARA
COUNTY...
The heavy rain has ended and flood waters have receded. Flooding is
no longer expected to pose a threat. Please continue to heed
remaining road closures.
&&
LAT...LON 4316 7893 4319 7869 4318 7846 4313 7847
4310 7847 4310 7856 4309 7863 4309 7864
4310 7864 4309 7869 4307 7893
$$
JaszkaThe office that day
Everything else NWS Buffalo, NY issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Sep 13, 3:49 AM EDT | Small Craft Advisory | BUF | 31 hr | |
| Sep 13, 1:22 PM EDT | Severe Thunderstorm Warning | BUF | Erie, Genesee, Niagara, Orleans | 53 min |
| Sep 13, 2:54 PM EDT | Beach Hazards Statement | BUF | Cayuga, Monroe, Niagara, Orleans, Oswego, Wayne | 19 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.