Thunderstorm Wind, Erie
- When
- June 11, 12:37 PM EST
- Where
- Erie County, 4.08 mi W of Springville
- Measured
- 50 kt (58 mph) estimated gust
- Reported by
- State Official
- Coordinates
- 42.500, -78.730
Tree down on Trevett Rd in the Town of Concord.
Damaging Winds in New York, June 11, 2026
On June 11, 2026, a cold front pushed through Western New York, trailing a negatively tilted upper-level low over the Great Lakes that ushered in a cooler, fall-like airmass. 0 C/km would support a few isolated strong-to-severe storms capable of producing localized damaging wind gusts and large hail.
Where it happened
Every event with a place to put it. Tap one for its entry below.
- Tornadoes
- Tropical storms and surge
- Floods
- Wind
- Hail
- Winter weather
- Heat and drought
- Cold
- Fire, smoke and dust
- Marine and coastal
- Other
The toll
- Deaths
- 0
- Injuries
- 0
- Property damage
- None recorded
- Crop damage
- None recorded
- Events
- 10
Deaths and injuries are direct and indirect together, as the offices filed them. Damage is property and crops in the dollars of the year, not adjusted for inflation, and only where an office estimated it.
What happened
The episode as NWS BUF wrote it up.
On June 11, 2026, a cold front pushed through Western New York, trailing a negatively tilted upper-level low over the Great Lakes that ushered in a cooler, fall-like airmass. The Storm Prediction Center outlined a Marginal Risk for the region, highlighting that 0 6 km bulk shear around 45 knots combined with low-level lapse rates of 6.5 7.0 C/km would support a few isolated strong-to-severe storms capable of producing localized damaging wind gusts and large hail. With precipitable water values and deep tropical moisture shifting eastward ahead of the main line, the Weather Prediction Center noted a diminishing overall flash flood threat across Western New York, though brief heavy downpours remained possible during afternoon heating. By evening, NWS Buffalo Area Forecast Discussions focused on the sharp drop in 850 mb temperatures to +7 C to +8 C over the warm lake waters, which generated lake-enhanced rain showers and created favorable conditions for waterspouts downwind of Lakes Erie and Ontario overnight.
What forecasters said that day
The local office's own words before the first event, 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 the first event at Jun 11, 12:27 PM EST, 10 minutes earlier. Its key messages:
- 1) Above normal temperatures and high humidity today and Friday. Warmest heat index values reaching the mid 90s and allowing for an increased risk in heat related illnesses. 2) Scattered showers and thunderstorms are expected through Friday evening. A few storms may become severe this afternoon, especially across the western Southern Tier.
Area forecast discussion, Jun 11, 12:27 PM EST, 10 minutes before
Area Forecast Discussion
National Weather Service Buffalo NY
127 PM EDT Thu Jun 11 2026
.WHAT HAS CHANGED...
Severe weather risk continuing to lower for Friday for much of
western New York and the Finger Lakes.
&&
.KEY MESSAGES...
1) Above normal temperatures and high humidity today and Friday.
Warmest heat index values reaching the mid 90s and allowing for an
increased risk in heat related illnesses.
2) Scattered showers and thunderstorms are expected through Friday
evening. A few storms may become severe this afternoon,
especially across the western Southern Tier.
&&
.DISCUSSION...
KEY MESSAGE 1...Above normal temperatures and high humidity today
and Friday. Warmest heat index values reaching the mid 90s and
allowing for an increased risk in heat related illnesses.
A mid-level ridge will continue to amplify across New York state
today before exiting east into New England Friday; supporting heat
and humidity to increase across the region. 850mb temperatures will
surge into the upper positive teens Celsius, supporting surface
temperatures to climb well into the 80s, and low 90s (especially
across the inland locations of the Genesee Valley. The combination
of this heat and humidity will translate to heat index values to
surge into the mid 90s today and therefor support Heat Advisory
conditions for portions of the Finger Lakes and counties lining the
southern shore of Lake Ontario.
Heat and humidity will continue into Friday, however due to the
exiting mid-level ridge axis, and approaching surface trough and
associated cold front, heat will be limited to the eastern portions
of the area and therefore confidence in Heat Advisory criteria
continues to lower.
In the wake of the aforementioned frontal passage Friday, cooler and
more comfortable weather are expected regionwide.
KEY MESSAGE 2...Scattered showers and thunderstorms are expected
through Friday evening. A few storms may become severe this afternoon,
especially across the western Southern Tier.
A soupy warm airmass continues to remain overhead this afternoon, as
PWAT values from the 12Z sounding are 1.75 inches. Remnants from
last night's MCV/Derecho in the Midwest combined with diurnal
instability this afternoon currently passing and building across
Lake Erie and northwestern Pennsylvania as of 17Z. This activity
will continue to progress northeast and then east across the CWA
this afternoon. Stronger thunderstorms may become severe, especially
across the western Southern Tier where a Thunderstorm Watch is
already in effect through 8PM this evening. The main impacts of any
stronger/severe thunderstorm will be torrential downpours, damaging
winds and large hail.
A trough across the upper Great Lakes this afternoon, will continue
to deepen and push east into eastern Great Lakes Friday, where its
resultant cold front will slide east across the region. Ahead of the
front, the heat and humidity, an unstable airmass in addition to an
increasing wind field will support the potential for strong/severe
thunderstorms with the primary . Due to the quicker nature of the
front's arrival, the best coverage of severe thunderstorms will be
limited to the eastern reaches of the CWA. Otherwise, with PWAT
values of 1.5 inches across the area will continue to support
torrential downpours.
&&
.AVIATION /18Z THURSDAY THROUGH TUESDAY/...
The moist airmass over the region will continue through Friday ahead
of a cold front crossing the area. Within this moist airmass,
scattered showers and thunderstorms that cross the terminals will
have the potential to cause lower VSBYs within downpours. CIGs will
also vary depending on location of showers/storms and elevation
across the area. Flight categories through mid afternoon on Friday
with any lowering due to brief heavy rain to IFR are possible and
brief LIFR can't be ruled out, especially over the higher terrain.
The best chance for showers/storms today is expected for this
afternoon into the early evening mainly for areas south of Lake
Ontario, and especially south of I90. A few scattered showers will
be possible later this evening, but should be limited in coverage
and intensity. Outside of any showers/storms flight conditions will
remain mostly VFR, with some MVFR CIGs possible over the higher
terrain. West to southwest winds will continue to gust to the 20 to
25 knot range, with the strongest gusts expected for areas northeast
of Lake Erie.
Tonight, mainly VFR flight conditions are expected to continue, but
lowering CIGs to MVFR will be possible starting a few hours before
daybreak on Friday morning, especially over the higher terrain,
where some IFR levels are possible. A few scattered showers and
embedded thunderstorms can't be ruled out tonight, especially closer
to daybreak.
Friday, CIGs will lower to MVFR and IFR as a pre frontal trough and
the cold front cross the area. Showers and thunderstorms will move
into the area and expand some in coverage. Shower and storm
potential will increase from west to east. Earlier timing of the
cold frontal passage will reduce the instability available for
showers/storms to develop for the western areas. This will lead to
better timing for eastern portions of the area to have increased
daytime heating ahead of the front. Further reductions to CIGs and
VSBY will be possible within showers/storms that drop heavier rain
at times during the day on Friday. CIGs are expected to improve
during the mid to late afternoon hours behind the passing cold front
to VFR.
Outlook...
Friday night through Saturday night...Mainly VFR.
Sunday...VFR/MVFR with a chance of showers and thunderstorms.
Monday...Mainly VFR, though there is a slight chance for a few
showers.
Tuesday...Mainly VFR, MVFR possible within a few showers/storms
that may move across the area
&&
.MARINE...
10 to 15 knot winds out of the west to southwest will cause choppy
conditions through Friday, but waves are expected to remain below 3
feet. Some weakening of the winds and lowering of waves can be
expected overnight with the loss of daytime heating.
Winds will increase some briefly ahead of an with a passing cold
front on Friday. Showers and thunderstorms will also be possible
through Friday until the cold front crosses the region. The best
chance for showers and thunderstorms will be this afternoon and
early evening, and then again on Friday ahead of the passing cold
front. Friday showers and storm potential will increase from west to
east.
&&
.BUF WATCHES/WARNINGS/ADVISORIES...
NY...Heat Advisory until 8 PM EDT this evening for NYZ001>005-013-
014.
MARINE...None.
&&
DISCUSSION...EAJ
AVIATION...SW
MARINE...SWHazardous weather outlook, Jun 11, 12:30 PM EST, 7 minutes before
Hazardous Weather Outlook National Weather Service Buffalo NY 130 PM EDT Thu Jun 11 2026 NYZ007-121730- Jefferson- 130 PM EDT Thu Jun 11 2026 This Hazardous Weather Outlook is for portions of central New York. .DAY ONE...This afternoon and tonight. Hazardous weather is not expected at this time. .DAYS TWO THROUGH SEVEN...Friday through Wednesday. There is a Marginal Risk for severe thunderstorms Friday. Damaging winds and large hail are the primary threats. Locally heavy rainfall is possible. .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 NYZ004-013-014-121730- Wayne-Livingston-Ontario- 130 PM EDT Thu Jun 11 2026 ...HEAT ADVISORY REMAINS IN EFFECT FROM NOON TODAY TO 8 PM EDT THIS EVENING... This Hazardous Weather Outlook is for portions of western New York. .DAY ONE...This afternoon and tonight. Please listen to NOAA Weather Radio or go to weather.gov on the Internet for more information about the following hazards. Heat Advisory. .DAYS TWO THROUGH SEVEN...Friday through Wednesday. Hot and humid conditions are also possible Friday. Heat index values may reach the mid 90s. There is a Marginal Risk for severe thunderstorms Friday. Damaging winds and large hail are the primary threats. Locally heavy rainfall is possible. .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 NYZ020-121730- Cattaraugus- 130 PM EDT Thu Jun 11 2026 ...SEVERE THUNDERSTORM WATCH 312 IN EFFECT UNTIL 8 PM EDT THIS EVENING... This Hazardous Weather Outlook is for portions of western New York. .DAY ONE...This afternoon and tonight. Please listen to NOAA Weather Radio or go to weather.gov on the Internet for more information about the following hazards. Severe Thunderstorm Watch. .DAYS TWO THROUGH SEVEN...Friday through Wednesday. There is a Marginal Risk for severe thunderstorms Friday. Damaging winds and large hail are the primary threats. Locally heavy rainfall is possible. .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-LOZ030-042-043-062-063-121730- 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 open waters from the Niagara River to Hamlin Beach- Lake Ontario open waters from Hamlin Beach to Sodus Bay- 130 PM EDT Thu Jun 11 2026 This Hazardous Weather Outlook is for portions of Lake Erie and Lake Ontario. .DAY ONE...This afternoon and tonight. No hazardous weather is expected at this time. .DAYS TWO THROUGH SEVEN...Friday through Wednesday. No hazardous weather is 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 NYZ001>003-121730- Niagara-Orleans-Monroe- 130 PM EDT Thu Jun 11 2026 ...HEAT ADVISORY REMAINS IN EFFECT FROM NOON TODAY TO 8 PM EDT THIS EVENING... This Hazardous Weather Outlook is for portions of western New York. .DAY ONE...This afternoon and tonight. Please listen to NOAA Weather Radio or go to weather.gov on the Internet for more information about the following hazards. Heat Advisory. .DAYS TWO THROUGH SEVEN...Friday through Wednesday. No hazardous weather is 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 NYZ019-121730- Chautauqua- 130 PM EDT Thu Jun 11 2026 ...SEVERE THUNDERSTORM WATCH 312 IN EFFECT UNTIL 8 PM EDT THIS EVENING... This Hazardous Weather Outlook is for portions of western New York. .DAY ONE...This afternoon and tonight. Please listen to NOAA Weather Radio or go to weather.gov on the Internet for more information about the following hazards. Severe Thunderstorm Watch. .DAYS TWO THROUGH SEVEN...Friday through Wednesday. No hazardous weather is 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 NYZ010>012-085-121730- Northern Erie-Genesee-Wyoming-Southern Erie- 130 PM EDT Thu Jun 11 2026 This Hazardous Weather Outlook is for portions of western New York. .DAY ONE...This afternoon and tonight. No hazardous weather is expected at this time. .DAYS TWO THROUGH SEVEN...Friday through Wednesday. No hazardous weather is 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 LOZ044-045-064-065-SLZ022-024-121730- 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 Sodus Bay to Mexico Bay- Lake Ontario open waters from Mexico Bay to the Saint Lawrence River- Saint Lawrence River from Cape Vincent to Ogdensburg- Saint Lawrence River from Ogdensburg to Saint Regis- 130 PM EDT Thu Jun 11 2026 This Hazardous Weather Outlook is for portions of Lake Ontario and Saint Lawrence River. .DAY ONE...This afternoon and tonight. Hazardous weather is not expected at this time. .DAYS TWO THROUGH SEVEN...Friday through Wednesday. There is a Marginal Risk for severe thunderstorms Friday. Damaging winds and large hail are the primary threats. Strong to severe wind gusts could produce locally dangerous high waves. .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 NYZ006-008-121730- Oswego-Lewis- 130 PM EDT Thu Jun 11 2026 This Hazardous Weather Outlook is for portions of central New York. .DAY ONE...This afternoon and tonight. Hazardous weather is not expected at this time. .DAYS TWO THROUGH SEVEN...Friday through Wednesday. There is a Slight Risk for severe thunderstorms Friday. Damaging winds and large hail are the primary threats. Locally heavy rainfall is possible. .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 NYZ021-121730- Allegany- 130 PM EDT Thu Jun 11 2026 ...SEVERE THUNDERSTORM WATCH 312 IN EFFECT UNTIL 8 PM EDT THIS EVENING... This Hazardous Weather Outlook is for portions of western New York. .DAY ONE...This afternoon and tonight. Please listen to NOAA Weather Radio or go to weather.gov on the Internet for more information about the following hazards. Severe Thunderstorm Watch. .DAYS TWO THROUGH SEVEN...Friday through Wednesday. There is a Slight Risk for severe thunderstorms Friday. Damaging winds and large hail are the primary threats. Locally heavy rainfall is possible. .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 NYZ005-121730- Northern Cayuga- 130 PM EDT Thu Jun 11 2026 ...HEAT ADVISORY REMAINS IN EFFECT FROM NOON TODAY TO 8 PM EDT THIS EVENING... This Hazardous Weather Outlook is for portions of central New York. .DAY ONE...This afternoon and tonight. Please listen to NOAA Weather Radio or go to weather.gov on the Internet for more information about the following hazards. Heat Advisory. .DAYS TWO THROUGH SEVEN...Friday through Wednesday. There is a Slight Risk for severe thunderstorms Friday. Damaging winds and large hail are the primary threats. Locally heavy rainfall is possible. .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, Jun 11, 7:45 AM EST, 4 hours 52 minutes before
Preliminary Local Storm Report
National Weather Service Buffalo NY
845 AM EDT Thu Jun 11 2026
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0415 PM Flash Flood 4 NNW Port Byron 43.09N 76.65W
06/10/2026 Cayuga NY 911 Call Center
Multiple reports of flooded roads and
rainfall reports of 2 to 3 inches.
&&
ARThe radar
The Buffalo radar (KBUF), 50 km away, was scanning. The volume nearest the first event began at 17:39 UTC.
Event by event
10 thunderstorm wind. Local standard time, as filed.
Thunderstorm Wind, Livingston
- When
- June 11, 2:10 PM EST
- Where
- Livingston County, Sonyea
- Measured
- 50 kt (58 mph) estimated gust
- Reported by
- State Official
- Coordinates
- 42.680, -77.820
Tree fell on a vehicle.
Thunderstorm Wind, Chautauqua
- When
- June 11, 2:11 PM EST
- Where
- Chautauqua County, 1.24 mi SW of Ivory
- Measured
- 50 kt (58 mph) estimated gust
- Reported by
- State Official
- Coordinates
- 42.060, -79.120
There was a tree down.
Thunderstorm Wind, Monroe
- When
- June 11, 2:42 PM EST
- Where
- Monroe County, 0.86 mi SE of Rush
- Measured
- 50 kt (58 mph) estimated gust
- Reported by
- Public
- Coordinates
- 42.970, -77.620
A tree down blocking roadway.
Thunderstorm Wind, Monroe
- When
- June 11, 2:45 PM EST
- Where
- Monroe County, 0.51 mi E of Honeoye Falls Arpt
- Measured
- 50 kt (58 mph) estimated gust
- Reported by
- State Official
- Coordinates
- 42.950, -77.590
Multiple reports of trees and wires down across the town.
Thunderstorm Wind, Monroe
- When
- June 11, 2:45 PM EST
- Where
- Monroe County, 1.01 mi E of Mendon
- Measured
- 50 kt (58 mph) estimated gust
- Reported by
- State Official
- Coordinates
- 43.000, -77.500
Multiple reports of trees and wires down across the town.
Thunderstorm Wind, Ontario
- When
- June 11, 3:11 PM EST
- Where
- Ontario County, Flint
- Measured
- 50 kt (58 mph) estimated gust
- Reported by
- State Official
- Coordinates
- 42.870, -77.100
A tree and wires down in roadway.
Thunderstorm Wind, Orleans
- When
- June 11, 3:11 PM EST
- Where
- Orleans County, 0.5 mi E of Albion
- Measured
- 50 kt (58 mph) estimated gust
- Reported by
- State Official
- Coordinates
- 43.250, -78.190
Multiple reports of trees and wires down across the town and village.
Thunderstorm Wind, Orleans
- When
- June 11, 3:21 PM EST
- Where
- Orleans County, Murray
- Measured
- 50 kt (58 mph) estimated gust
- Reported by
- State Official
- Coordinates
- 43.270, -78.050
Multiple reports of trees and wires down across the town.
Thunderstorm Wind, Orleans
- When
- June 11, 3:26 PM EST
- Where
- Orleans County, 0.85 mi SE of Pt Breeze
- Measured
- 50 kt (58 mph) estimated gust
- Reported by
- State Official
- Coordinates
- 43.360, -78.190
There were multiple reports of tree and wires down.
What these are
- Thunderstorm Wind
- Winds from a thunderstorm of 50 knots (58 mph) or more, or lower winds that caused damage or casualties. Measured gusts are marked MG, estimated EG.
After NWS Directive 10-1605, the rules offices file Storm Data by.
The same day elsewhere
- Tornadoes and Flooding in Indiana, June 11, 2026
- Tornadoes and Flash Flood in Illinois, June 11, 2026
- Tornadoes and Flash Flooding in Illinois, June 11, 2026
- Damaging Winds in Maryland, June 11, 2026
- Tornadoes and Damaging Winds in Indiana, June 11, 2026
- Tornadoes and Damaging Winds in Indiana, June 11, 2026
- Flood and Damaging Winds in Pennsylvania, June 11, 2026
- Damaging Winds in Virginia, June 11, 2026
- Damaging Winds in Ohio, June 11 to 12, 2026
- Hail and Damaging Winds in Oklahoma, June 11, 2026
- Damaging Winds in Pennsylvania, June 11, 2026
- Tornadoes and Flash Flooding in Nebraska, June 11, 2026
More
Every storm in New York in 2026Every state in 2026This day in weather historyWarnings in New York, June 2026
Sources
NOAA National Centers for Environmental Information, Storm Events Database, compiled from the National Weather Service’s monthly Storm Data. Complete through 2026-06; NCEI adds each month about 75 days after it ends and revises past years a few times a year. Rebuilt 2026-09-24. Each event’s entry at NCEI: 1353256, 1353257, 1353258, 1353259, 1353261, 1353262, 1353260, 1353263, 1353264, 1353265.