Alert archive / Pennsylvania / Mesoscale Discussions in 2004
Mesoscale Discussion 1278
The Storm Prediction Center issued this mesoscale discussion at Jun 14, 2004, 10:13 PM EDT for Broome County, Chenango County, Tioga County, New York; 29 counties in Pennsylvania. It was in force for 62 min.
The area
The outline as issued.
The facts
- Issued
- Jun 14, 2004, 10:13 PM EDT (02:13 UTC)
- Expired
- Jun 14, 2004, 11:15 PM EDT
- In force
- 62 min
- Issued by
- the Storm Prediction Center
All 32 counties
Broome County, NY, Chenango County, NY, Tioga County, NY, Adams County, PA, Berks County, PA, Bradford County, PA, Carbon 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, Luzerne County, PA, Lycoming County, PA, Mifflin County, PA, Monroe County, PA, Montour County, PA, Northumberland County, PA, Perry County, PA, Schuylkill County, PA, Snyder County, PA, Sullivan County, PA, Susquehanna County, PA, Union County, PA, Wayne County, PA, Wyoming County, PA, York County, PA
The radar
The State College radar (KCCX), 111 km from the middle of the area, began a volume at 02:13 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
Washington/Dulle, VA (KIAD), launched 00:00Z, 2.2 hours before the alert went out and 246 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
- 1038 J/kg
- Mixed-layer CIN
- -45 J/kg
- Mixed-layer LCL
- 925 m above ground
- 0-6 km bulk shear
- 23 kt
- 0-1 km storm-relative helicity
- 94 m²/s²
- 0-3 km storm-relative helicity
- 136 m²/s²
- Significant tornado parameter
- 0.3
- Supercell composite
- 2.4
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 14, 8:03 PM EDT | Mesoscale Discussion | SPC | Allegany, Cattaraugus, Chautauqua, Chemung, Erie, Genesee and 8 more | 87 min |
| Jun 14, 8:41 PM EDT | Mesoscale Discussion | SPC | Cortland, Hamilton, Herkimer, Lewis, Madison, Oneida and 2 more | 64 min |
| Jun 15, 3:55 PM EDT | Mesoscale Discussion | SPC | Bronx, Broome, Delaware, Dutchess, Kings, Nassau and 10 more | 95 min |
| Jun 15, 2:22 PM EDT | Mesoscale Discussion | SPC | Allegheny, Beaver, Butler, Greene, Lawrence, Washington | 113 min |
Nearby
Mesoscale Discussions in Pennsylvania, 2004Mesoscale Discussions in New York, 2004Every mesoscale discussion in 2004
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.