Alert archive / New York / Flash Flood Warnings in 2026

Flash Flood Warning 13, NWS Buffalo, NY

August 2, 2026Erie County, Niagara County, New York

NWS Buffalo, NY issued this flash flood warning at Aug 2, 2026, 8:47 PM EDT for Erie County, Niagara County, New York. It was in force for 114 min. 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: Aug 2, 2026, 8:47 PM EDT (00:47 UTC)
Expired: Aug 2, 2026, 10:41 PM EDT
In force: 114 min
Issued by: NWS Buffalo, NY
Area: Storm-based polygon
Flood severity: None

Counties Erie County, NY, Niagara County, NY

The radar

The Buffalo radar (KBUF), 11 km from the middle of the area, began a volume at 00:50 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
Aug 2, 10:38 PM EDT	FLASH FLOOD	2 Nne Buffalo, NY	Right lane of Route 33 off ramp to the Scajaquada Expressway closed due to flooding.

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 00:00Z, 0.8 hours before the alert went out and 14 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.

Skew-T log-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.

Mixed-layer CAPE: 947 J/kg
Mixed-layer CIN: -13 J/kg
Mixed-layer LCL: 596 m above ground
0-6 km bulk shear: 42 kt
0-1 km storm-relative helicity: 122 m²/s²
0-3 km storm-relative helicity: 158 m²/s²
Significant tornado parameter: 0.6
Supercell composite: 3.6

Open this sounding in Storm Lab

The text

As transmitted.

884 
WGUS51 KBUF 030047
FFWBUF
NYC029-063-030345-
/O.NEW.KBUF.FF.W.0013.260803T0047Z-260803T0345Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
Flash Flood Warning
National Weather Service Buffalo NY
847 PM EDT Sun Aug 2 2026

The National Weather Service in Buffalo has issued a

* Flash Flood Warning for...
  North Central Erie County in western New York...
  Southeastern Niagara County in western New York...

* Until 1145 PM EDT.

* At 847 PM EDT, Doppler radar indicated thunderstorms producing 
  heavy rain across the warned area. Between 0.75 and 1.25 inches of 
  rain have fallen. Additional rainfall amounts up 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.

  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, West Seneca, North Tonawanda, Lackawanna, 
  Kenmore, Depew, Amherst, Tonawanda, Williamsville, Grand Island, 
  Pendleton, Erie Basin Marina, Small Boat Harbor, Blasdell, East 
  Amherst, Clarence Center and Rapids.

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.

&&

LAT...LON 4307 7892 4309 7873 4310 7855 4293 7867
      4280 7881 4281 7890 4286 7892 4288 7891
      4290 7891 4291 7891 4292 7891 4293 7891
      4295 7892 4296 7893 4296 7896 4297 7897

FLASH FLOOD...RADAR INDICATED

$$

Brothers

1 follow-up statement

245 
WGUS71 KBUF 030241
FFSBUF

Flash Flood Statement
National Weather Service Buffalo NY
1041 PM EDT Sun Aug 2 2026

NYC029-063-030251-
/O.CAN.KBUF.FF.W.0013.000000T0000Z-260803T0345Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Erie NY-Niagara NY-
1041 PM EDT Sun Aug 2 2026

...FLASH FLOOD WARNING IS CANCELLED FOR NORTH CENTRAL ERIE COUNTY...

The heavy rain has ended. Flooding is no longer expected to pose a 
threat. Please continue to heed remaining road closures.

A Flood Watch remains in effect until 200 AM EDT for portions of 
central and western New York.

&&

LAT...LON 4307 7892 4309 7873 4310 7855 4293 7867
      4280 7881 4281 7890 4286 7892 4288 7891
      4290 7891 4291 7891 4292 7891 4293 7891
      4295 7892 4296 7893 4296 7896 4297 7897

$$

Brothers

The office that day

Everything else NWS Buffalo, NY issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Aug 2, 10:53 PM EDT	Areal Flood Warning	BUF	Niagara	4 hr
Aug 3, 4:01 AM EDT	Beach Hazards Statement	BUF	Cayuga, Jefferson, Monroe, Niagara, Orleans, Oswego and 1 more	18 hr
Aug 3, 4:01 AM EDT	Small Craft Advisory	BUF		18 hr

Nearby

Flash Flood Warnings in New York, 2026 Every 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.