Alert archive / New York / Severe Thunderstorm Warnings in 2026
Severe Thunderstorm Warning 21, NWS Buffalo, NY
NWS Buffalo, NY issued this severe thunderstorm warning at Apr 15, 2026, 7:06 PM EDT for 4 counties in New York. It was in force for 54 min. 6 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
- Apr 15, 2026, 7:06 PM EDT (23:06 UTC)
- Expired
- Apr 15, 2026, 8:00 PM EDT
- In force
- 54 min
- Issued by
- NWS Buffalo, NY
- Area
- Storm-based polygon
- Hail
- 1.0 in
- Wind
- 60.0 mph
Counties Cattaraugus County, NY, Chautauqua County, NY, Erie County, NY, Niagara County, NY
The radar
The Buffalo radar (KBUF), 46 km from the middle of the area, began a volume at 23:07 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 |
|---|---|---|---|
| Apr 15, 7:38 PM EDT | TSTM WND DMG | Cherry Creek, NY | Reports of several trees, power lines and power poles downed across Cherry Creek. |
| Apr 15, 7:41 PM EDT | TSTM WND DMG | Leon, NY | Trees and wires downed in Leon. |
| Apr 15, 7:47 PM EDT | TSTM WND DMG | Cattaraugus, NY | Several reports of trees and wires downed in Cattaraugus. |
| Apr 15, 7:50 PM EDT | TSTM WND DMG | New Albion, NY | Several reports of trees and wires downed in New Albion. |
| Apr 15, 8:07 PM EDT | TSTM WND DMG | Delevan, NY | Several reports of trees and wires downed in Delevan. |
| Apr 15, 8:09 PM EDT | TSTM WND DMG | 1 Sw Lime Lake-Machias, NY | Several reports of trees and wires downed in Machias. |
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, 11.1 hours before the alert went out and 46 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
- 9 J/kg
- Mixed-layer CIN
- -104 J/kg
- Mixed-layer LCL
- 793 m above ground
- 0-6 km bulk shear
- 64 kt
- 0-1 km storm-relative helicity
- 299 m²/s²
- 0-3 km storm-relative helicity
- 314 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
237
WUUS51 KBUF 152306
SVRBUF
NYC009-013-029-063-160000-
/O.NEW.KBUF.SV.W.0021.260415T2306Z-260416T0000Z/
BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Buffalo NY
706 PM EDT Wed Apr 15 2026
The National Weather Service in Buffalo has issued a
* Severe Thunderstorm Warning for...
Cattaraugus County in western New York...
Erie County in western New York...
Southern Niagara County in western New York...
Chautauqua County in western New York...
* Until 800 PM EDT.
* At 705 PM EDT, severe thunderstorms were located along a line
extending from 29 miles southwest of Niagara Falls to 12 miles
northwest of Lake Erie State Park to near North East, moving east
at 45 mph.
HAZARD...60 mph wind gusts and quarter size hail.
SOURCE...Radar indicated.
IMPACT...Hail damage to vehicles is expected. Expect wind damage
to roofs, siding, and trees.
* Locations impacted include...
Buffalo, Cheektowaga, West Seneca, North Tonawanda, Jamestown,
Clarence, Lackawanna, Kenmore, Depew, and Amherst.
This includes the following highways...
Interstate 90 between exits 49 and 61.
Interstate 86 between exits 4 and 21.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
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.
Torrential rainfall is occurring with these storms, and may lead to
flash flooding. Do not drive your vehicle through flooded roadways.
&&
LAT...LON 4227 7976 4228 7973 4231 7977 4244 7950
4253 7939 4260 7919 4272 7909 4280 7892
4292 7890 4299 7901 4307 7901 4307 7904
4316 7847 4287 7846 4278 7849 4278 7846
4252 7846 4252 7842 4200 7875 4200 7976
TIME...MOT...LOC 2305Z 260DEG 40KT 4288 7956 4255 7961 4226 7992
HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...1.00 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH
$$
Welch2 follow-up statements
162
WWUS51 KBUF 152343
SVSBUF
Severe Weather Statement
National Weather Service Buffalo NY
743 PM EDT Wed Apr 15 2026
NYC009-013-029-063-160000-
/O.CON.KBUF.SV.W.0021.000000T0000Z-260416T0000Z/
Cattaraugus NY-Erie NY-Niagara NY-Chautauqua NY-
743 PM EDT Wed Apr 15 2026
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 800 PM EDT
FOR CATTARAUGUS...ERIE...SOUTHERN NIAGARA AND CHAUTAUQUA COUNTIES...
At 742 PM EDT, severe thunderstorms were located along a line
extending from Woodlawn Beach State Park to Gowanda to near Falconer,
moving east at 45 mph.
HAZARD...60 mph wind gusts and nickel size hail.
SOURCE...Radar indicated.
IMPACT...Expect damage to roofs, siding, and trees.
Locations impacted include...
Buffalo, Cheektowaga, West Seneca, North Tonawanda, Jamestown,
Clarence, Lackawanna, Kenmore, Depew, and Amherst.
This includes the following highways...
Interstate 90 between exits 49 and 58.
Interstate 86 between exits 7 and 21.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
Torrential rainfall is occurring with these storms, and may lead to
flash flooding. Do not drive your vehicle through flooded roadways.
&&
LAT...LON 4224 7938 4272 7909 4280 7892 4292 7890
4296 7893 4299 7901 4307 7901 4307 7904
4316 7847 4287 7846 4287 7849 4278 7849
4278 7846 4252 7846 4252 7842 4200 7875
4200 7976
TIME...MOT...LOC 2342Z 275DEG 41KT 4278 7887 4245 7892 4216 7923
HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...0.88 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH
$$
Lupo580
WWUS51 KBUF 160001
SVSBUF
Severe Weather Statement
National Weather Service Buffalo NY
801 PM EDT Wed Apr 15 2026
NYC009-013-029-063-160008-
/O.EXP.KBUF.SV.W.0021.000000T0000Z-260416T0000Z/
Cattaraugus NY-Erie NY-Niagara NY-Chautauqua NY-
801 PM EDT Wed Apr 15 2026
...THE SEVERE THUNDERSTORM WARNING FOR CATTARAUGUS...ERIE...SOUTHERN
NIAGARA AND CHAUTAUQUA COUNTIES WILL EXPIRE AT 800 PM EDT...
Remember, a Severe Thunderstorm Warning still remains in effect for
Chautauqua, Cattaraugus, and Erie Counties until 9 PM.
&&
LAT...LON 4224 7938 4272 7909 4280 7892 4292 7890
4296 7893 4299 7901 4307 7901 4307 7904
4316 7847 4287 7846 4287 7849 4278 7849
4278 7846 4252 7846 4252 7842 4200 7875
4200 7976
TIME...MOT...LOC 2358Z 260DEG 40KT 4280 7870 4247 7875 4218 7906
$$
LupoThe office that day
Everything else NWS Buffalo, NY issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Apr 15, 4:47 AM EDT | Special Marine Warning | BUF | 70 min | |
| Apr 15, 5:47 PM EDT | Severe Thunderstorm Warning | BUF | Allegany, Cattaraugus | 43 min |
| Apr 15, 6:46 PM EDT | Special Marine Warning | BUF | 89 min | |
| Apr 15, 7:16 PM EDT | Special Marine Warning | BUF | 39 min | |
| Apr 15, 7:57 PM EDT | Severe Thunderstorm Warning | BUF | Allegany, Cattaraugus, Chautauqua, Erie, Livingston, Wyoming | 63 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.