Alert archive / New York / Mesoscale Discussions in 2026
Mesoscale Discussion 2201
The Storm Prediction Center issued this mesoscale discussion at Sep 2, 2026, 2:50 PM EDT for 20 counties in New York. It was in force for 115 min.
The area
The outline as issued.
The facts
- Issued
- Sep 2, 2026, 2:50 PM EDT (18:50 UTC)
- Expired
- Sep 2, 2026, 4:45 PM EDT
- In force
- 115 min
- Issued by
- the Storm Prediction Center
- Concerning
- Severe potential...watch likely
- Chance of a watch
- 95%
Counties Allegany County, NY, Cattaraugus County, NY, Cayuga County, NY, Chautauqua County, NY, Chemung County, NY, Erie County, NY, Genesee County, NY, Livingston County, NY, Monroe County, NY, Niagara County, NY, Ontario County, NY, Orleans County, NY, Schuyler County, NY, Seneca County, NY, Steuben County, NY, Tioga County, NY, Tompkins County, NY, Wayne County, NY, Wyoming County, NY, Yates County, NY
The radar
The Buffalo radar (KBUF), 63 km from the middle of the area, began a volume at 18:54 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.
The watches that followed
Watches SPC issued over any of the same counties within four hours of this discussion.
The nearest sounding before it
Buffalo Intl Airport, NY (KBUF), launched 12:00Z, 6.8 hours before the alert went out and 59 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
- 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
The text
As transmitted.
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</html>SPC that day
Everything else SPC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Sep 2, 6:04 AM EDT | Mesoscale Discussion | SPC | Allegany, Cattaraugus, Chautauqua, Erie, Genesee, Livingston and 6 more | 116 min |
| Sep 2, 8:51 AM EDT | Mesoscale Discussion | SPC | Allegany, Cattaraugus, Chautauqua, Erie, Genesee, Livingston and 9 more | 84 min |
| Sep 2, 4:41 PM EDT | Tornado Watch | SPC | Allegany, Broome, Cattaraugus, Cayuga, Chautauqua, Chemung and 23 more | 6 hr |
| Sep 2, 5:36 PM EDT | Mesoscale Discussion | SPC | Erie, Genesee, Livingston, Monroe, Niagara, Orleans and 1 more | 84 min |
| Sep 2, 7:51 PM EDT | Mesoscale Discussion | SPC | Allegany, Cattaraugus, Cayuga, Chautauqua, Chemung, Genesee and 10 more | 84 min |
Nearby
Mesoscale Discussions in New York, 2026Every mesoscale discussion 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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.