Alert archive / New York / Severe Thunderstorm Warnings in 2026

Severe Thunderstorm Warning 113, NWS Buffalo, NY

September 2, 2026Cattaraugus County, Chautauqua County, New York

NWS Buffalo, NY issued this severe thunderstorm warning at Sep 2, 2026, 10:00 PM EDT for Cattaraugus County, Chautauqua County, New York. It was in force for 75 min. 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 2, 2026, 10:00 PM EDT (02:00 UTC)
Expired: Sep 2, 2026, 11:15 PM EDT
In force: 75 min
Issued by: NWS Buffalo, NY
Area: Storm-based polygon
Tornado: Possible
Damage threat: Considerable
Hail: 1.0 in
Wind: 70.0 mph

Counties Cattaraugus County, NY, Chautauqua County, NY

The radar

The Buffalo radar (KBUF), 93 km from the middle of the area, began a volume at 02:04 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, 10:12 PM EDT	TSTM WND DMG	3 W Ripley, NY	Public report of property damage to a home just east of the NY/PA border on the Lake Erie shore. Roof and siding damage to a home.
Sep 2, 10:15 PM EDT	TSTM WND DMG	3 W Ripley, NY	Trees down near residences on Rt 5.

Local storm reports filed while the alert was in force, from inside its polygon or its counties.

The watch it was issued in

The SPC watch in force over the same counties when this warning went out.

Issued	Product	Office	Lasted
Sep 2, 4:41 PM EDT	Tornado Watch	SPC	6 hr

The nearest sounding before it

Pittsburgh, PA (KPIT), launched 00:00Z, 2.0 hours before the alert went out and 216 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: 2581 J/kg
Mixed-layer CIN: -5 J/kg
Mixed-layer LCL: 1375 m above ground
0-6 km bulk shear: 35 kt
0-1 km storm-relative helicity: 107 m²/s²
0-3 km storm-relative helicity: 140 m²/s²
Significant tornado parameter: 0.7
Supercell composite: 7.5

Open this sounding in Storm Lab

The text

As transmitted.

622 
WUUS51 KBUF 030200
SVRBUF
NYC009-013-030315-
/O.NEW.KBUF.SV.W.0113.260903T0200Z-260903T0315Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Buffalo NY
1000 PM EDT Wed Sep 2 2026

The National Weather Service in Buffalo has issued a

* Severe Thunderstorm Warning for...
  Southwestern Cattaraugus County in western New York...
  Chautauqua County in western New York...

* Until 1115 PM EDT.

* At 959 PM EDT, a severe thunderstorm was located near North East,
  or 12 miles northeast of Erie, moving east at 45 mph.

  HAZARD...70 mph wind gusts and quarter size hail.

  SOURCE...Radar indicated.

  IMPACT...Hail damage to vehicles is expected. Expect considerable 
           tree damage. Wind damage is also likely to mobile homes, 
           roofs, and outbuildings.

* Locations impacted include...
  Jamestown, Dunkirk, Fredonia, Allegany State Park, Westfield,
  Lakewood, Falconer, Mayville, Clymer, and Long Point State Park.

This includes the following highways...
 Interstate 90 between exits 59 and 61.
 Interstate 86 between exits 4 and 19.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Remain alert for a possible tornado! Tornadoes can develop quickly
from severe thunderstorms. If you spot a tornado go at once into the
basement or small central room in a sturdy structure.

For your protection move to an interior room on the lowest floor of a
building.

A Tornado Watch remains in effect until 1100 PM EDT for western New
York.

&&

LAT...LON 4244 7950 4252 7941 4237 7892 4200 7871
      4200 7976 4227 7976 4228 7973 4231 7977
TIME...MOT...LOC 0159Z 290DEG 40KT 4227 7994 

TORNADO...POSSIBLE
THUNDERSTORM DAMAGE THREAT...CONSIDERABLE
HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...1.00 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...70 MPH

$$

HSK

1 follow-up statement

198 
WWUS51 KBUF 030307
SVSBUF

Severe Weather Statement
National Weather Service Buffalo NY
1107 PM EDT Wed Sep 2 2026

NYC009-013-030316-
/O.EXP.KBUF.SV.W.0113.000000T0000Z-260903T0315Z/
Cattaraugus NY-Chautauqua NY-
1107 PM EDT Wed Sep 2 2026

...THE SEVERE THUNDERSTORM WARNING FOR SOUTHWESTERN CATTARAUGUS AND
CHAUTAUQUA COUNTIES WILL EXPIRE AT 1115 PM EDT...

The storm which prompted the warning has moved out of the area.
Therefore, the warning will be allowed to expire.

&&

LAT...LON 4244 7950 4252 7941 4237 7892 4200 7871
      4200 7976 4227 7976 4228 7973 4231 7977
TIME...MOT...LOC 0306Z 290DEG 40KT 4201 7901 

$$

Thomas

The 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, 10:17 PM EDT	Severe Thunderstorm Warning	BUF	Allegany	43 min
Sep 2, 11:23 PM EDT	Areal Flood Warning	BUF	Orleans	10 hr
Sep 3, 7:27 PM EDT	Flash Flood Warning	BUF	Erie	4 hr

Nearby

Severe Thunderstorm Warnings in New York, 2026 Every severe thunderstorm 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.