Alert archive / New York / Severe Thunderstorm Warnings in 2026

Severe Thunderstorm Warning 109, NWS Buffalo, NY

September 2, 20268 counties in New York

NWS Buffalo, NY issued this severe thunderstorm warning at Sep 2, 2026, 7:40 PM EDT for 8 counties in New York. It was in force for 65 min. 9 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, 7:40 PM EDT (23:40 UTC)
Expired
Sep 2, 2026, 8:45 PM EDT
In force
65 min
Issued by
NWS Buffalo, NY
Area
Storm-based polygon
Damage threat
Considerable
Hail
1.25 in
Wind
70.0 mph

Counties Cayuga County, NY, Genesee County, NY, Livingston County, NY, Monroe County, NY, Ontario County, NY, Oswego County, NY, Wayne County, NY, Wyoming County, NY

The radar

The Buffalo radar (KBUF), 126 km from the middle of the area, began a volume at 23:43 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

TimeReportWhereRemark
Sep 2, 7:51 PM EDTTSTM WND DMG2 Ssw Pittsford, NYLarge tree down,.
Sep 2, 8:02 PM EDTTSTM WND DMG4 E Victor, NYMultiple reports of trees and wires down blocking the roadways across the town.
Sep 2, 8:04 PM EDTTSTM WND DMG2 N Conesus, NYTree blocking roadway causing road closure between Cole Road and Rowland Rd.
Sep 2, 8:07 PM EDTTSTM WND DMGManchester, NYMultiple reports of trees and wires down blocking the roadways across the town.
Sep 2, 8:10 PM EDTTSTM WND DMG2 Ene Canandaigua, NYTree and wires down on a garage. Time estimated by radar.
Sep 2, 8:10 PM EDTTSTM WND DMG2 N Seneca Castle, NY2 trees down blocking the roadway.
Sep 2, 8:10 PM EDTTSTM WND DMG4 Sse Shortsville, NYMultiple reports of trees and wires down blocking the roadways across the town.
Sep 2, 8:17 PM EDTTSTM WND DMGGeneva, NYMultiple reports of trees and wires down blocking the roadways across the town.
Sep 2, 8:20 PM EDTTSTM WND DMGNaples, NYMultiple reports of trees and wires down blocking the roadways across the town.

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

Did it verify

Verified. The Iowa Environmental Mesonet's Cow matched 9 storm reports to this severe thunderstorm warning; the first came 11 minutes after it went out.

Cow counts a report within 15 km of the polygon while the warning was in force: a tornado for a tornado warning; hail of 1 inch or more, a gust of 58 mph or more or wind damage for a severe thunderstorm warning; a flash flood report for a flash flood warning.

The watch it was issued in

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

IssuedProductOfficeLasted
Sep 2, 4:41 PM EDTTornado WatchSPC6 hr

The nearest sounding before it

Buffalo Intl Airport, NY (KBUF), launched 12:00Z, 11.7 hours before the alert went out and 123 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-pSkew-T log-p diagram, Buffalo Intl Airport, NY at 12:00Z on 2026-09-02Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1578 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Buffalo Intl Airport, NY at 12:00Z on 2026-09-02The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 117 square meters per square second.19395878Sfc1 km3 km6 km9 kmRMLM
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
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

Open this sounding in Storm Lab

The text

As transmitted.

071 
WUUS51 KBUF 022340
SVRBUF
NYC011-037-051-055-069-075-117-121-030045-
/O.NEW.KBUF.SV.W.0109.260902T2340Z-260903T0045Z/

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

The National Weather Service in Buffalo has issued a

* Severe Thunderstorm Warning for...
  Wayne County in western New York...
  Northern Wyoming County in western New York...
  Livingston County in western New York...
  Cayuga County in central New York...
  Southwestern Oswego County in central New York...
  Southeastern Genesee County in western New York...
  Monroe County in western New York...
  Ontario County in western New York...

* Until 845 PM EDT.

* At 738 PM EDT, severe thunderstorms were located along a line
  extending from Irondequoit to near Varysburg, moving east at 35
  mph.

  HAZARD...70 mph wind gusts and half dollar 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...
  Rochester, Irondequoit, Chili, Oswego, Geneva, Canandaigua,
  Geneseo, East Rochester, Webster, and Fairport.

This includes the following highways...
 Interstate 390 between exits 6 and 12.
 Interstate 90 between exits 40 and 46.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

This is a DANGEROUS SITUATION. These storms are producing widespread 
wind damage across Western New York. SEEK SHELTER NOW inside a 
sturdy structure and stay away from windows! 

Large hail, damaging wind, and continuous cloud to ground lightning 
are occurring with these storms. Move indoors immediately. 

Lightning is one of nature's leading killers. Remember, if you can 
hear thunder, you are close enough to be struck by lightning.

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

&&

LAT...LON 4269 7841 4326 7759 4332 7738 4333 7714
      4331 7697 4335 7681 4355 7646 4323 7644
      4323 7648 4303 7649 4301 7696 4276 7697
      4276 7731 4267 7737 4258 7737 4257 7766
TIME...MOT...LOC 2338Z 282DEG 30KT 4320 7756 4274 7827 

THUNDERSTORM DAMAGE THREAT...CONSIDERABLE
HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...1.25 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...70 MPH

$$

Thomas
2 follow-up statements
448 
WWUS51 KBUF 030017
SVSBUF

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

NYC037-055-030025-
/O.CAN.KBUF.SV.W.0109.000000T0000Z-260903T0045Z/
Genesee NY-Monroe NY-
817 PM EDT Wed Sep 2 2026

...THE SEVERE THUNDERSTORM WARNING FOR SOUTHEASTERN GENESEE AND
MONROE COUNTIES IS CANCELLED...

The storms which prompted the warning have moved out of the warned 
area. Therefore, the warning has been cancelled.

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

&&

LAT...LON 4266 7820 4293 7750 4304 7737 4333 7714
      4331 7697 4335 7681 4355 7646 4323 7644
      4323 7648 4303 7649 4301 7696 4276 7698
      4276 7731 4267 7737 4258 7737 4257 7766
TIME...MOT...LOC 0015Z 282DEG 30KT 4313 7714 4268 7786 

$$

NYC011-051-069-075-117-121-030045-
/O.CON.KBUF.SV.W.0109.000000T0000Z-260903T0045Z/
Wayne NY-Wyoming NY-Livingston NY-Cayuga NY-Oswego NY-Ontario NY-
817 PM EDT Wed Sep 2 2026

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 845 PM EDT
FOR WAYNE...EAST CENTRAL WYOMING...CENTRAL LIVINGSTON...CAYUGA...
SOUTHWESTERN OSWEGO AND ONTARIO COUNTIES...

At 815 PM EDT, severe thunderstorms were located along a line
extending from near Marion to near Mount Morris, moving east at 35
mph.

HAZARD...70 mph wind gusts and half dollar size hail.

SOURCE...Trained weather spotters.

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...
Oswego, Geneva, Canandaigua, Geneseo, Letchworth State Park, Fair
Haven Beach State Park, Newark, Williamson, Marion, and Perry.

This includes the following highways...
 Interstate 390 between exits 6 and 8.
 Interstate 90 between exits 40 and 44.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

This is a DANGEROUS SITUATION. These storms are producing widespread 
wind damage across Western New York. SEEK SHELTER NOW inside a 
sturdy structure and stay away from windows.
 
&&

LAT...LON 4266 7820 4293 7750 4304 7737 4333 7714
      4331 7697 4335 7681 4355 7646 4323 7644
      4323 7648 4303 7649 4301 7696 4276 7698
      4276 7731 4267 7737 4258 7737 4257 7766
TIME...MOT...LOC 0015Z 282DEG 30KT 4313 7714 4268 7786 

THUNDERSTORM DAMAGE THREAT...CONSIDERABLE
HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...1.25 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...70 MPH

$$

Thomas
894 
WWUS51 KBUF 030036
SVSBUF

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

NYC011-051-069-075-117-121-030045-
/O.EXP.KBUF.SV.W.0109.000000T0000Z-260903T0045Z/
Wayne NY-Wyoming NY-Livingston NY-Cayuga NY-Oswego NY-Ontario NY-
836 PM EDT Wed Sep 2 2026

...THE SEVERE THUNDERSTORM WARNING FOR WAYNE...EAST CENTRAL
WYOMING...CENTRAL LIVINGSTON...CAYUGA...SOUTHWESTERN OSWEGO AND
ONTARIO COUNTIES WILL EXPIRE AT 845 PM EDT...

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

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

&&

LAT...LON 4266 7820 4293 7750 4304 7737 4333 7714
      4331 7697 4335 7681 4355 7646 4323 7644
      4323 7648 4303 7649 4301 7696 4276 7698
      4276 7731 4267 7737 4258 7737 4257 7766
TIME...MOT...LOC 0035Z 282DEG 30KT 4310 7694 4265 7766 

$$

Thomas

What forecasters said that day

The local office's own words before this severe thunderstorm warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

NWS Buffalo, NY wrote its last area forecast discussion before this severe thunderstorm warning went out at Sep 2, 7:37 PM EDT, 3 minutes earlier. Its key messages:

  • 1) Periodic showers and thunderstorms are expected through Thursday. Some storms will be severe later this afternoon and evening. 2) Quieter weather, overall, expected Thursday night through Saturday.
Area forecast discussion, Sep 2, 7:37 PM EDT, 3 minutes before
Area Forecast Discussion
National Weather Service Buffalo NY
737 PM EDT Wed Sep 2 2026

.WHAT HAS CHANGED...
The SPC now has our entire forecast area in a slight to
enhanced risk of severe thunderstorms this afternoon into
tonight. The greatest risk for severe thunderstorms exists in
Western NY and the Finger Lakes. The likeliest window for severe
storms appears to be from 4 PM to 11 PM EDT this evening.
Please see discussion below for further details.

&&

.KEY MESSAGES...
1) Periodic showers and thunderstorms are expected through Thursday.
Some storms will be severe later this afternoon and evening.

2) Quieter weather, overall, expected Thursday night through
Saturday.

&&

.DISCUSSION...
KEY MESSAGE 1...Periodic showers and thunderstorms are expected through
Thursday. Some storms will be severe later this afternoon and evening.

W'erly to WNW'erly mid/upper-level flow near 40 to 60 knots and
embedded shortwave disturbances affect our region through
Thursday. At the surface, our CWA resides within a warm and very
humid sector originating over the Gulf before a cold front
sweeps E'ward through Western and Central NY between about 2 AM
and 9 AM EDT Thursday morning. This warm and very humid air mass
will contribute to periods of heavy rainfall with showers and
storms (more details below). Behind the cold front, an extensive
high pressure ridge associated with a cooler and drier air mass
begins to build from northern ON and vicinity. High temperatures
are expected to reach mainly the mid 70's to mid 80's this
afternoon and be followed by overnight lows in the 60's around
daybreak Thursday. Highs should reach the 70's to 80F late
Thursday afternoon.

As of 2:50 PM EDT, a broken line of showers and thunderstorms,
including supercells, had already developed over southern ON,
along a pre-front surface trough axis. Periodic and organized
showers and thunderstorms amidst moderate to strong deep-layer
bulk shear are expected today through Thursday as at least weak
to moderate CAPE, including elevated CAPE, is released by the
following: moist isentropic ascent ahead of shortwave trough
axes; low-level convergence/moist ascent along surface trough
axes attendant to the shortwave troughs and along the cold
front; downshear outflow boundaries interacting favorably with
ambient low-level vertical wind shear. Of greatest concern is
the aforementioned storms that have developed over southern ON.
These storms are expected to grow upscale into a QLCS consisting
of multicells, including bowing segments, and supercells as the
storms persist generally ESE'ward and impact our CWA late this
afternoon, and especially this evening, and encounter a pre-
storm environment that includes moderate to strong boundary
layer CAPE. Strong to damaging straight-line wind gusts are
expected as the storms encounter steep low-level lapse rates and
moderate to strong DCAPE stemming from diurnal convective
mixing of the boundary layer through this late afternoon and
then limited nocturnal cooling in the warm/moist sector boundary
layer this evening into tonight. Sporadic severe hail is
possible due to mid-level lapse rates near 7C/km contributing to
large MUCAPE in the hail growth zone, but rich low-level
moisture contributing to unfavorably-high ambient atmospheric
melting levels near 11kft AGL should curb the severe hail
threat, at least somewhat. A few tornadoes are possible with
mesocyclones and mesovortices, and a strong tornado cannot be
ruled out since low-level winds veering and strengthening
significantly with height should yield surface-based ESRH near
150-300 m2/s2 amidst favorably-low mixed layer LCL's. Localized
flash flooding is possible through tonight, especially where
showers and storms manage to train along any outflow boundaries
that manage to become oriented largely parallel to the W'erly to
WNW'erly mean mid-level flow.

KEY MESSAGE 2...Quieter weather, overall, expected Thursday night
through Saturday.

The surface high pressure ridge continues to build from
northern ON, and vicinity and humidity at the surface and aloft
continues to decrease gradually, Thursday night through
Saturday. However, northwesterly flow aloft and embedded
shortwave troughs will continue to impact our region through
Friday before the ridge aloft begins to build from the west
Friday night through Saturday. Moist isentropic ascent ahead of
the shortwave trough axes and low-level convergence/moist ascent
along surface trough axes attendant to the shortwaves may
release weak, yet sufficient instability, including elevated
CAPE, to generate isolated showers and thunderstorms Thursday
night through Friday. Current odds favor fair weather Friday
night through Saturday due to stabilizing subsidence
accompanying the ridge at the surface and aloft. Lows should
reach the mid 50's to mid 60's around daybreak Friday and mainly
the upper 40's to near 60F around daybreak Saturday as the
cooler air mass associated with the ridge continues to
overspread Western and Central NY. Late afternoon highs should
reach the 70's on Friday and the mid 60's to mid 70's on
Saturday. Note: partial clearing, the cooler air mass, lingering
low-level moisture, and weak surface winds should yield steam
fog in the river and lake valleys east of Lake Ontario, in the
Finger Lakes, and in the Western Southern Tier around daybreak
Friday and Saturday, respectively.

&&

.AVIATION /00Z THURSDAY THROUGH MONDAY/...
A line of strong to severe thunderstorms has just passed to the
SE of a KBUF to KROC line with strong NW gusts as it does. Cigs
in heavy rain and thunder are generally dropping to MVFR while
visibilities get closer to IFR with the activity. Indications
are that there is rotation in this line, so aviation concerns
would be wise to avoid this as is drops SE over the next 3-4
hours. Elsewhere, more scattered activity should affect KJWH and
KART over the next few hours, however it will be nowhere near as
strong as the other sites.

Scattered showers and thunderstorms will remain around even
behind the line of stronger weather through the remainder of the
evening. With a humid air mass in place and weaker low level
flow overnight, expect IFR cigs and localized fog to become
common, especially around KJWH. This will take some time to mix
out after sunrise, but eventually most areas should return to
VFR on Thursday.

Outlook...

Friday and Monday...Mainly VFR. River valley fog with local IFR each
late night and early morning across the Southern Tier.

&&

.MARINE...
S'erly to SW'erly winds up to 10 to 15 knots are expected on
Lakes Erie and Ontario before a cold front sweeps E'ward across
the lakes overnight tonight through about mid-morning on
Thursday. The front will be followed by a high pressure ridge
building from northern Ontario and vicinity. Behind the front,
W'erly to NW'erly winds around 10 to 15 knots and waves of 3
feet or less are expected through Friday. Light and variable
winds and waves remaining 3 feet or less are expected this
Friday night through Monday as the aforementioned ridge
continues to build into our region.

There will be a chance of thunderstorms at times through
Thursday. Thunderstorm chances will peak late Wednesday
afternoon through the first half of Wednesday night. Some of
these storms may produce strong winds, hail, and locally higher
waves.

&&

.BUF WATCHES/WARNINGS/ADVISORIES...
NY...None.
MARINE...None.

&&

DISCUSSION...Jaszka
AVIATION...Fries
MARINE...Jaszka
Hazardous weather outlook, Sep 2, 4:43 PM EDT, 2 hours 57 minutes before
Hazardous Weather Outlook
National Weather Service Buffalo NY
443 PM EDT Wed Sep 2 2026

NYZ001>008-010>014-019>021-085-032045-
Niagara-Orleans-Monroe-Wayne-Northern Cayuga-Oswego-Jefferson-Lewis-
Northern Erie-Genesee-Wyoming-Livingston-Ontario-Chautauqua-
Cattaraugus-Allegany-Southern Erie-
443 PM EDT Wed Sep 2 2026

...TORNADO WATCH 645 IN EFFECT UNTIL 11 PM EDT THIS EVENING...

This Hazardous Weather Outlook is for western and north central New
York.

.DAY ONE...Tonight.

Please listen to NOAA Weather Radio or go to weather.gov on the
Internet for more information about the following hazards.

   Tornado Watch.

Several rounds of showers and thunderstorms with periods of heavy
rainfall are expected today through tonight. Some storms may be
severe with damaging wind gusts and hail, respectively. A tornado or
two and localized flash flooding are possible.

.DAYS TWO THROUGH SEVEN...Thursday through Tuesday.

Hazardous weather is not expected at this time.

.SPOTTER INFORMATION STATEMENT...

Spotter activation is not expected at this time.

This product, along with other watches, warnings, advisories, and
statements issued by the National Weather Service office in Buffalo
can be found on the internet at http://www.weather.gov/buf

LEZ020-040-041-LOZ030-042>045-062>065-032045-
Upper Niagara River and Buffalo Harbor-
Lake Erie nearshore waters from Ripley to Dunkirk-
Lake Erie nearshore waters from Dunkirk to Buffalo-
Lower Niagara River-
Lake Ontario nearshore waters from the Niagara River to Hamlin Beach-
Lake Ontario nearshore waters from Hamlin Beach to Sodus Bay-
Lake Ontario nearshore waters from Sodus Bay to Mexico Bay-
Lake Ontario nearshore waters from Mexico Bay to the Saint Lawrence
River-
Lake Ontario open waters from the Niagara River to Hamlin Beach-
Lake Ontario open waters from Hamlin Beach to Sodus Bay-
Lake Ontario open waters from Sodus Bay to Mexico Bay-
Lake Ontario open waters from Mexico Bay to the Saint Lawrence River-
443 PM EDT Wed Sep 2 2026

...TORNADO WATCH 645 IN EFFECT UNTIL 11 PM EDT THIS EVENING...

This Hazardous Weather Outlook is for portions of Lake Erie and Lake
Ontario.

.DAY ONE...Tonight.

Please listen to NOAA Weather Radio or go to weather.gov on the
Internet for more information about the following hazards.

   Tornado Watch.

Several rounds of showers and thunderstorms with periods of heavy
rainfall are expected today through tonight. Some storms may be
severe with damaging wind gusts and hail, respectively. A waterspout
or two are possible.

.DAYS TWO THROUGH SEVEN...Thursday through Tuesday.

Hazardous weather is not expected at this time.

.SPOTTER INFORMATION STATEMENT...

Spotter activation is not expected at this time.

This product, along with other watches, warnings, advisories, and
statements issued by the National Weather Service office in Buffalo
can be found on the internet at http://www.weather.gov/buf

SLZ022-024-032045-
Saint Lawrence River from Cape Vincent to Ogdensburg-
Saint Lawrence River from Ogdensburg to Saint Regis-
443 PM EDT Wed Sep 2 2026

This Hazardous Weather Outlook is for the New York waters of the
Saint Lawrence River.

.DAY ONE...Tonight.

Several rounds of showers and thunderstorms with periods of heavy
rainfall are expected today through tonight. Some storms may be
severe with damaging wind gusts and hail, respectively. A waterspout
or two are possible.

.DAYS TWO THROUGH SEVEN...Thursday through Tuesday.

Hazardous weather is not expected at this time.

.SPOTTER INFORMATION STATEMENT...

Spotter activation is not expected at this time.

This product, along with other watches, warnings, advisories, and
statements issued by the National Weather Service office in Buffalo
can be found on the internet at http://www.weather.gov/buf

In the hours before

Local storm report, Sep 2, 6:24 PM EDT, 1 hour 16 minutes before
Preliminary Local Storm Report
National Weather Service Buffalo NY
624 PM EDT Wed Sep 2 2026

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0619 PM     Tstm Wnd Dmg     2 SSW Castile           42.61N 78.07W
09/02/2026                   Wyoming            NY   911 Call Center

            Tree down across 19A.

&&
Local storm report, Sep 2, 6:25 PM EDT, 1 hour 15 minutes before
Preliminary Local Storm Report
National Weather Service Buffalo NY
625 PM EDT Wed Sep 2 2026

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0620 PM     Tstm Wnd Dmg     2 NW Portageville       42.60N 78.07W
09/02/2026                   Wyoming            NY   911 Call Center

            Tree and wires down on 19A.

&&
Local storm report, Sep 2, 6:30 PM EDT, 1 hour 10 minutes before
Preliminary Local Storm Report
National Weather Service Buffalo NY
630 PM EDT Wed Sep 2 2026

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0621 PM     Tstm Wnd Dmg     1 WNW Portageville      42.58N 78.06W
09/02/2026                   Wyoming            NY   911 Call Center

            Tree and wires down on 19A/ Route 436.

&&
Local storm report, Sep 2, 6:44 PM EDT, 56 minutes before
Preliminary Local Storm Report
National Weather Service Buffalo NY
644 PM EDT Wed Sep 2 2026

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0625 PM     Tstm Wnd Dmg     Portageville            42.58N 78.04W
09/02/2026                   Livingston         NY   911 Call Center

            Tree down on Portageville Road.

&&
Local storm report, Sep 2, 7:36 PM EDT, 4 minutes before
Preliminary Local Storm Report
National Weather Service Buffalo NY
736 PM EDT Wed Sep 2 2026

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0608 PM     Hail             Silver Springs          42.66N 78.09W
09/02/2026  M1.25 Inch       Wyoming            NY   Public

            Picture of half dollar sized hail from
            social media.

0606 PM     Tstm Wnd Dmg     Olcott                  43.34N 78.71W
09/02/2026                   Niagara            NY   Public

            Multiple trees down in Olcott, NY. Video of
            tree damage from social media. Time
            estimated by radar.

0606 PM     Tstm Wnd Dmg     Pike                    42.56N 78.15W
09/02/2026                   Wyoming            NY   Public

            Multiple reports of trees down. Pictures
            submitted via social media. Time estimated
            by radar.

&&

The office that day

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

IssuedProductOfficeCountiesLasted
Sep 2, 6:24 AM EDTSpecial Marine WarningBUF66 min
Sep 2, 6:26 AM EDTSpecial Marine WarningBUF94 min
Sep 2, 6:46 AM EDTSpecial Marine WarningBUF68 min
Sep 2, 7:18 AM EDTSevere Thunderstorm Warning Considerable damage threatBUFErie, Genesee, Monroe, Niagara, Orleans, Wyoming57 min
Sep 2, 7:40 AM EDTSevere Thunderstorm WarningBUFAllegany, Cattaraugus, Erie, Livingston, Wyoming50 min
Sep 2, 7:59 AM EDTSpecial Marine WarningBUF91 min
Sep 2, 8:18 AM EDTSevere Thunderstorm WarningBUFErie, Genesee, Livingston, Monroe, Niagara, Ontario and 2 more57 min
Sep 2, 8:40 AM EDTSevere Thunderstorm WarningBUFErie, Genesee, Livingston, Monroe, Ontario, Wyoming65 min
Sep 2, 9:16 AM EDTSevere Thunderstorm WarningBUFCayuga, Oswego, Wayne59 min
Sep 2, 9:28 AM EDTSpecial Marine WarningBUF62 min
Sep 2, 5:18 PM EDTSpecial Marine WarningBUF117 min
Sep 2, 5:32 PM EDTSevere Thunderstorm WarningBUFAllegany, Livingston, Wyoming58 min
Sep 2, 5:43 PM EDTSevere Thunderstorm Warning Considerable damage threatBUFErie, Genesee, Monroe, Niagara, Orleans77 min
Sep 2, 6:07 PM EDTTornado Warning Tornado observedBUFNiagara, Orleans23 min
Sep 2, 6:15 PM EDTSpecial Marine WarningBUF2 hr
Sep 2, 6:17 PM EDTSevere Thunderstorm WarningBUFAllegany, Livingston, Monroe, Ontario, Wyoming58 min
Sep 2, 6:21 PM EDTSpecial Marine WarningBUF114 min
Sep 2, 6:28 PM EDTTornado WarningBUFGenesee, Niagara, Orleans32 min
Sep 2, 6:47 PM EDTSevere Thunderstorm Warning Considerable damage threatBUFErie, Genesee, Livingston, Monroe, Niagara, Orleans and 1 more73 min
Sep 2, 6:51 PM EDTSevere Thunderstorm WarningBUFMonroe, Ontario, Wayne54 min
Sep 2, 6:55 PM EDTTornado Warning Tornado observedBUFGenesee, Monroe, Orleans35 min
Sep 2, 7:04 PM EDTSpecial Marine WarningBUF116 min
Sep 2, 7:14 PM EDTSpecial Marine WarningBUF43 min
Sep 2, 7:26 PM EDTFlash Flood WarningBUFErie, Genesee, Niagara, Orleans4 hr
Sep 2, 7:28 PM EDTTornado WarningBUFGenesee, Livingston, Monroe, Wyoming47 min
Sep 2, 7:30 PM EDTSevere Thunderstorm Warning Considerable damage threatBUFAllegany, Cattaraugus, Chautauqua, Erie, Wyoming60 min
Sep 2, 7:56 PM EDTSevere Thunderstorm Warning Considerable damage threatBUFAllegany, Cattaraugus, Chautauqua, Livingston, Wyoming79 min
Sep 2, 7:56 PM EDTTornado WarningBUFAllegany, Livingston, Wyoming34 min

Nearby

Severe Thunderstorm Warnings in New York, 2026Every 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.