Alert archive / New York / Mesoscale Discussions in 2003
Mesoscale Discussion 2309
The Storm Prediction Center issued this mesoscale discussion at Aug 29, 2003, 10:30 AM EDT for 28 counties in New York. It was in force for 3 hr.
The area
The outline as issued.
The facts
- Issued
- Aug 29, 2003, 10:30 AM EDT (14:30 UTC)
- Expired
- Aug 29, 2003, 1:00 PM EDT
- In force
- 3 hr
- Issued by
- the Storm Prediction Center
All 28 counties
Allegany County, NY, Cayuga County, NY, Chemung County, NY, Cortland County, NY, Erie County, NY, Franklin County, NY, Genesee County, NY, Herkimer County, NY, Jefferson County, NY, Lewis County, NY, Livingston County, NY, Madison County, NY, Monroe County, NY, Niagara County, NY, Oneida County, NY, Onondaga County, NY, Ontario County, NY, Orleans County, NY, Oswego County, NY, Schuyler County, NY, Seneca County, NY, St. Lawrence County, NY, Steuben County, NY, Tioga County, NY, Tompkins County, NY, Wayne County, NY, Wyoming County, NY, Yates County, NY
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, 2.5 hours before the alert went out and 215 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
- 1055 J/kg
- Mixed-layer CIN
- -42 J/kg
- Mixed-layer LCL
- 850 m above ground
- 0-6 km bulk shear
- 39 kt
- 0-1 km storm-relative helicity
- 194 m²/s²
- 0-3 km storm-relative helicity
- 232 m²/s²
- Significant tornado parameter
- 1.2
- Supercell composite
- 12.6
The text
As transmitted, in the capitals the NWS used until 2016.
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</html>SPC that day
Everything else SPC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 29, 10:55 AM EDT | Severe Thunderstorm Watch | SPC | Allegany, Cattaraugus, Cayuga, Clinton, Erie, Essex and 22 more | 5 hr |
| Aug 29, 1:32 PM EDT | Mesoscale Discussion | SPC | Broome, Chautauqua, Chemung, Chenango, Cortland, Otsego and 4 more | 2 hr |
| Aug 29, 2:23 PM EDT | Mesoscale Discussion | SPC | Allegany, Cattaraugus, Cayuga, Clinton, Erie, Essex and 22 more | 97 min |
| Aug 29, 3:35 PM EDT | Severe Thunderstorm Watch | SPC | Albany, Allegany, Broome, Cayuga, Chemung, Chenango and 33 more | 5 hr |
| Aug 29, 6:33 PM EDT | Mesoscale Discussion | SPC | Albany, Broome, Chemung, Chenango, Columbia, Cortland and 20 more | 57 min |
Nearby
Mesoscale Discussions in New York, 2003Every mesoscale discussion in 2003
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.