Alert archive / Pennsylvania / Mesoscale Discussions in 2012
Mesoscale Discussion 961
The Storm Prediction Center issued this mesoscale discussion at May 29, 2012, 3:12 PM EDT for 18 counties in New York; 42 counties in Pennsylvania. It was in force for 63 min.
The area
The outline as issued.
The facts
- Issued
- May 29, 2012, 3:12 PM EDT (19:12 UTC)
- Expired
- May 29, 2012, 4:15 PM EDT
- In force
- 63 min
- Issued by
- the Storm Prediction Center
All 60 counties
Broome County, NY, Cayuga County, NY, Chemung County, NY, Chenango County, NY, Cortland County, NY, Delaware County, NY, Madison County, NY, Oneida County, NY, Onondaga County, NY, Oswego County, NY, Otsego County, NY, Schuyler County, NY, Seneca County, NY, Steuben County, NY, Sullivan County, NY, Tioga County, NY, Tompkins County, NY, Yates County, NY, Adams County, PA, Bedford County, PA, Berks County, PA, Blair County, PA, Bradford County, PA, Cambria County, PA, Cameron County, PA, Carbon County, PA, Centre County, PA, Clearfield County, PA, Clinton County, PA, Columbia County, PA, Cumberland County, PA, Dauphin County, PA, Franklin County, PA, Fulton County, PA, Huntingdon County, PA, Juniata County, PA, Lackawanna County, PA, Lancaster County, PA, Lebanon County, PA, Lehigh County, PA, Luzerne County, PA, Lycoming County, PA, Mifflin County, PA, Monroe County, PA, Montour County, PA, Northampton County, PA, Northumberland County, PA, Perry County, PA, Pike County, PA, Potter County, PA, Schuylkill County, PA, Snyder County, PA, Somerset County, PA, Sullivan County, PA, Susquehanna County, PA, Tioga County, PA, Union County, PA, Wayne County, PA, Wyoming County, PA, York County, PA
The radar
The Binghamton radar (KBGM), 89 km from the middle of the area, began a volume at 19:16 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, 7.2 hours before the alert went out and 223 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
- 1783 J/kg
- Mixed-layer CIN
- -53 J/kg
- Mixed-layer LCL
- 1124 m above ground
- 0-6 km bulk shear
- 37 kt
- 0-1 km storm-relative helicity
- 71 m²/s²
- 0-3 km storm-relative helicity
- 128 m²/s²
- Significant tornado parameter
- 0.5
- Supercell composite
- 2.0
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 |
|---|---|---|---|---|
| May 29, 10:27 AM EDT | Severe Thunderstorm Watch | SPC | Allegany, Cattaraugus, Cayuga, Chautauqua, Jefferson, Lewis and 11 more | 5 hr |
| May 29, 11:43 AM EDT | Mesoscale Discussion | SPC | Albany, Broome, Cayuga, Chemung, Chenango, Columbia and 26 more | 62 min |
| May 29, 12:01 PM EDT | Mesoscale Discussion | SPC | Albany, Broome, Chemung, Chenango, Columbia, Cortland and 19 more | 59 min |
| May 29, 12:26 PM EDT | Tornado Watch | SPC | Albany, Clinton, Columbia, Dutchess, Essex, Franklin and 13 more | 8 hr |
| May 29, 1:03 PM EDT | Severe Thunderstorm Watch | SPC | Broome, Chemung, Chenango, Cortland, Delaware, Madison and 5 more | 8 hr |
| May 29, 1:25 PM EDT | Mesoscale Discussion | SPC | Allegany, Cattaraugus, Cayuga, Chautauqua, Erie, Genesee and 13 more | 65 min |
| May 29, 1:52 PM EDT | Mesoscale Discussion | SPC | Albany, Clinton, Columbia, Essex, Franklin, Fulton and 8 more | 53 min |
| May 29, 2:13 PM EDT | Mesoscale Discussion | SPC | Broome, Chemung, Chenango, Cortland, Delaware, Dutchess and 10 more | 62 min |
| May 29, 3:26 PM EDT | Mesoscale Discussion | SPC | Albany, Clinton, Columbia, Essex, Franklin, Fulton and 11 more | 64 min |
| May 29, 4:40 PM EDT | Mesoscale Discussion | SPC | Broome, Delaware, Otsego, Sullivan | 65 min |
| May 29, 5:54 PM EDT | Severe Thunderstorm Watch | SPC | Bronx, Kings, New York, Orange, Putnam, Queens and 3 more | 3 hr |
| May 29, 7:01 PM EDT | Mesoscale Discussion | SPC | Bronx, Kings, New York, Putnam, Richmond, Rockland and 1 more | 89 min |
| May 29, 7:21 PM EDT | Mesoscale Discussion | SPC | Dutchess | 54 min |
| May 29, 9:48 AM EDT | Mesoscale Discussion | SPC | Allegheny, Armstrong, Beaver, Butler, Clarion, Clearfield and 8 more | 87 min |
Nearby
Mesoscale Discussions in Pennsylvania, 2012Mesoscale Discussions in New York, 2012Every mesoscale discussion in 2012
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.