Alert archive / Pennsylvania / Mesoscale Discussions in 2004
Mesoscale Discussion 1668
The Storm Prediction Center issued this mesoscale discussion at Jul 14, 2004, 3:40 PM EDT for Warren County, New Jersey; 34 counties in Pennsylvania. It was in force for 95 min.
The area
The outline as issued.
The facts
- Issued
- Jul 14, 2004, 3:40 PM EDT (19:40 UTC)
- Expired
- Jul 14, 2004, 5:15 PM EDT
- In force
- 95 min
- Issued by
- the Storm Prediction Center
All 35 counties
Warren County, NJ, Adams County, PA, Bedford County, PA, Berks County, PA, Blair County, PA, Carbon County, PA, Centre County, PA, Chester 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, Montgomery County, PA, Montour County, PA, Northampton County, PA, Northumberland County, PA, Perry County, PA, Pike County, PA, Schuylkill County, PA, Snyder County, PA, Sullivan County, PA, Union County, PA, York County, PA
The radar
The State College radar (KCCX), 133 km from the middle of the area, began a volume at 19:43 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
Phillips Aaf/Abe, MD (KAPG), launched 12:00Z, 7.7 hours before the alert went out and 117 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
- 3 J/kg
- Mixed-layer CIN
- -233 J/kg
- Mixed-layer LCL
- 719 m above ground
- 0-6 km bulk shear
- 37 kt
- 0-1 km storm-relative helicity
- 91 m²/s²
- 0-3 km storm-relative helicity
- 125 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
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 |
|---|---|---|---|---|
| Jul 14, 12:50 PM EDT | Tornado Watch | SPC | Atlantic, Cape May, Cumberland, Salem | 6 hr |
| Jul 14, 1:15 PM EDT | Severe Thunderstorm Watch | SPC | Warren | 6 hr |
| Jul 14, 3:05 PM EDT | Mesoscale Discussion | SPC | Atlantic, Cape May, Cumberland, Salem | 115 min |
| Jul 14, 12:06 PM EDT | Mesoscale Discussion | SPC | Adams, Allegheny, Armstrong, Bedford, Blair, Butler and 35 more | 2 hr |
| Jul 14, 3:16 PM EDT | Mesoscale Discussion | SPC | Susquehanna, Wayne, Wyoming | 89 min |
Nearby
Mesoscale Discussions in Pennsylvania, 2004Mesoscale Discussions in New Jersey, 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.