Alert archive / New York / Severe Thunderstorm Warnings in 2026
Severe Thunderstorm Warning 85, NWS Buffalo, NY
NWS Buffalo, NY issued this severe thunderstorm warning at Jul 21, 2026, 6:14 PM EDT for 5 counties in New York. It was in force for 76 min. 4 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
- Jul 21, 2026, 6:14 PM EDT (22:14 UTC)
- Expired
- Jul 21, 2026, 7:30 PM EDT
- In force
- 76 min
- Issued by
- NWS Buffalo, NY
- Area
- Storm-based polygon
- Hail
- 0.75 in
- Wind
- 60.0 mph
Counties Genesee County, NY, Livingston County, NY, Monroe County, NY, Ontario County, NY, Wyoming County, NY
The radar
The Buffalo radar (KBUF), 103 km from the middle of the area, began a volume at 22:18 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 |
|---|---|---|---|
| Jul 21, 6:15 PM EDT | TSTM WND DMG | 3 Se Batavia, NY | Trees down in the Town of Batavia. |
| Jul 21, 6:22 PM EDT | TSTM WND DMG | 3 Ese Alexander, NY | Trees down in the Town of Alexander. |
| Jul 21, 7:05 PM EDT | TSTM WND DMG | 2 Nw Victor, NY | Tree down blocking both lanes of I-490 westbound ramp. |
| Jul 21, 7:25 PM EDT | TSTM WND DMG | Clifton Springs, NY | Tree down in the Town of Clifton Springs. |
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, 10.2 hours before the alert went out and 100 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
- 300 J/kg
- Mixed-layer CIN
- -122 J/kg
- Mixed-layer LCL
- 1133 m above ground
- 0-6 km bulk shear
- 46 kt
- 0-1 km storm-relative helicity
- 162 m²/s²
- 0-3 km storm-relative helicity
- 153 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.7
The text
As transmitted.
289
WUUS51 KBUF 212214
SVRBUF
NYC037-051-055-069-121-212330-
/O.NEW.KBUF.SV.W.0085.260721T2214Z-260721T2330Z/
BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Buffalo NY
614 PM EDT Tue Jul 21 2026
The National Weather Service in Buffalo has issued a
* Severe Thunderstorm Warning for...
Northeastern Wyoming County in western New York...
Northern Livingston County in western New York...
Southeastern Genesee County in western New York...
Southern Monroe County in western New York...
Ontario County in western New York...
* Until 730 PM EDT.
* At 613 PM EDT, a severe thunderstorm was located near Le Roy, or
near Batavia, moving east at 40 mph.
HAZARD...60 mph wind gusts.
SOURCE...Radar indicated.
IMPACT...Expect damage to roofs, siding, and trees.
* Locations impacted include...
Batavia, Geneva, Canandaigua, Geneseo, Le Roy, Avon, Victor,
Honeoye Falls, Attica, and Pavilion.
This includes the following highways...
Interstate 390 between exits 8 and 11.
Interstate 90 between exits 42 and 45, and between exits 47 and 48.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
Torrential rainfall is occurring with this storm, and may lead to
flash flooding. Do not drive your vehicle through flooded roadways.
&&
LAT...LON 4287 7828 4307 7816 4300 7696 4287 7696
4286 7698 4276 7697 4276 7731 4272 7735
TIME...MOT...LOC 2213Z 280DEG 33KT 4297 7808
HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...<.75 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH
$$
Fries2 follow-up statements
784
WWUS51 KBUF 212236
SVSBUF
Severe Weather Statement
National Weather Service Buffalo NY
636 PM EDT Tue Jul 21 2026
NYC037-121-212246-
/O.CAN.KBUF.SV.W.0085.000000T0000Z-260721T2330Z/
Wyoming NY-Genesee NY-
636 PM EDT Tue Jul 21 2026
...THE SEVERE THUNDERSTORM WARNING FOR NORTHEASTERN WYOMING AND
SOUTHEASTERN GENESEE COUNTIES IS CANCELLED...
The severe thunderstorm which prompted the warning has moved out of
the warned area. Therefore, the warning has been
cancelled.
&&
LAT...LON 4282 7796 4290 7796 4291 7794 4294 7793
4295 7791 4304 7791 4304 7795 4305 7795
4300 7696 4276 7697 4276 7731 4272 7735
TIME...MOT...LOC 2236Z 280DEG 33KT 4293 7779
$$
NYC051-055-069-212330-
/O.CON.KBUF.SV.W.0085.000000T0000Z-260721T2330Z/
Livingston NY-Monroe NY-Ontario NY-
636 PM EDT Tue Jul 21 2026
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 730 PM EDT
FOR NORTHERN LIVINGSTON...SOUTHERN MONROE AND ONTARIO COUNTIES...
At 636 PM EDT, a severe thunderstorm was located over Avon, or 9
miles north of Geneseo, moving east at 40 mph.
HAZARD...60 mph wind gusts.
SOURCE...Radar indicated.
IMPACT...Expect damage to roofs, siding, and trees.
Locations impacted include...
Geneva, Canandaigua, Geneseo, Avon, Victor, Honeoye Falls, Bristol,
Caledonia, Lima, and Clifton Springs.
This includes the following highways...
Interstate 390 between exits 8 and 11.
Interstate 90 between exits 42 and 45.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
Torrential rainfall is occurring with this storm, and may lead to
flash flooding. Do not drive your vehicle through flooded roadways.
&&
LAT...LON 4282 7796 4290 7796 4291 7794 4294 7793
4295 7791 4304 7791 4304 7795 4305 7795
4300 7696 4276 7697 4276 7731 4272 7735
TIME...MOT...LOC 2236Z 280DEG 33KT 4293 7779
HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...<.75 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH
$$
Fries724
WWUS51 KBUF 212327
SVSBUF
Severe Weather Statement
National Weather Service Buffalo NY
727 PM EDT Tue Jul 21 2026
NYC051-055-069-212337-
/O.EXP.KBUF.SV.W.0085.000000T0000Z-260721T2330Z/
Livingston NY-Monroe NY-Ontario NY-
727 PM EDT Tue Jul 21 2026
...THE SEVERE THUNDERSTORM WARNING FOR NORTHERN LIVINGSTON...SOUTHERN
MONROE AND ONTARIO COUNTIES WILL EXPIRE AT 730 PM EDT...
The storm which prompted the warning has weakened below severe
limits, and no longer poses an immediate threat to life or property.
Therefore, the warning will be allowed to expire. However, gusty
winds are still possible with this thunderstorm.
&&
LAT...LON 4282 7796 4290 7796 4291 7794 4294 7793
4295 7791 4304 7791 4304 7795 4305 7795
4300 7696 4276 7697 4276 7731 4272 7735
TIME...MOT...LOC 2327Z 280DEG 33KT 4285 7719
$$
FriesThe office that day
Everything else NWS Buffalo, NY issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 21, 9:08 AM EDT | Severe Thunderstorm Warning | BUF | Chautauqua | 67 min |
| Jul 21, 9:47 AM EDT | Special Marine Warning | BUF | 58 min | |
| Jul 21, 9:58 AM EDT | Severe Thunderstorm Warning | BUF | Chautauqua | 46 min |
| Jul 21, 11:17 AM EDT | Special Marine Warning | BUF | 38 min | |
| Jul 21, 11:45 AM EDT | Severe Thunderstorm Warning | BUF | Erie, Genesee, Niagara, Orleans | 29 min |
| Jul 21, 1:26 PM EDT | Severe Thunderstorm Warning | BUF | Jefferson, Lewis, Oswego | 28 min |
| Jul 21, 1:29 PM EDT | Special Marine Warning | BUF | 61 min | |
| Jul 21, 2:05 PM EDT | Severe Thunderstorm Warning | BUF | Erie, Niagara | 55 min |
| Jul 21, 2:58 PM EDT | Flash Flood Warning | BUF | Erie, Niagara | 5 hr |
| Jul 21, 5:32 PM EDT | Severe Thunderstorm Warning | BUF | Chautauqua | 58 min |
| Jul 21, 5:41 PM EDT | Beach Hazards Statement | BUF | Cayuga, Jefferson, Monroe, Niagara, Orleans, Oswego and 1 more | 32 hr |
| Jul 21, 5:51 PM EDT | Severe Thunderstorm Warning | BUF | Monroe, Ontario, Wayne | 54 min |
| Jul 21, 7:58 PM EDT | Severe Thunderstorm Warning | BUF | Ontario | 31 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.