Alert archive / Pennsylvania / Mesoscale Discussions in 2014
Mesoscale Discussion 797
The Storm Prediction Center issued this mesoscale discussion at Jun 3, 2014, 4:34 PM EDT for 5 counties in New York; 27 counties in Pennsylvania. It was in force for 116 min.
The area
The outline as issued.
The facts
- Issued
- Jun 3, 2014, 4:34 PM EDT (20:34 UTC)
- Expired
- Jun 3, 2014, 6:30 PM EDT
- In force
- 116 min
- Issued by
- the Storm Prediction Center
- Chance of a watch
- 20%
All 32 counties
Broome County, NY, Chemung County, NY, Schuyler County, NY, Tioga County, NY, Tompkins County, NY, Armstrong County, PA, Blair County, PA, Bradford County, PA, Cambria County, PA, Centre County, PA, Clearfield County, PA, Clinton County, PA, Columbia County, PA, Dauphin County, PA, Huntingdon County, PA, Indiana County, PA, Juniata County, PA, Lackawanna County, PA, Luzerne County, PA, Lycoming County, PA, Mifflin County, PA, Montour County, PA, Northumberland County, PA, Perry County, PA, Schuylkill County, PA, Snyder County, PA, Sullivan County, PA, Susquehanna County, PA, Tioga County, PA, Union County, PA, Westmoreland County, PA, Wyoming County, PA
The radar
The State College radar (KCCX), 27 km from the middle of the area, began a volume at 20:34 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 nearest sounding before it
Pittsburgh, PA (KAGC), launched 12:00Z, 8.6 hours before the alert went out and 204 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
- 148 J/kg
- Mixed-layer CIN
- -9 J/kg
- Mixed-layer LCL
- 566 m above ground
- 0-6 km bulk shear
- 31 kt
- 0-1 km storm-relative helicity
- 131 m²/s²
- 0-3 km storm-relative helicity
- 131 m²/s²
- Significant tornado parameter
- 0.1
- Supercell composite
- 0.8
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 |
|---|---|---|---|---|
| Jun 3, 12:10 PM EDT | Mesoscale Discussion | SPC | Allegany, Cattaraugus, Chautauqua, Erie, Genesee, Livingston and 2 more | 3 hr |
| Jun 3, 12:59 PM EDT | Mesoscale Discussion | SPC | Albany, Clinton, Delaware, Essex, Franklin, Fulton and 11 more | 3 hr |
Nearby
Mesoscale Discussions in Pennsylvania, 2014Mesoscale Discussions in New York, 2014Every mesoscale discussion in 2014
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.