Alert archive / Pennsylvania / Mesoscale Discussions in 2008
Mesoscale Discussion 2048
The Storm Prediction Center issued this mesoscale discussion at Aug 7, 2008, 5:42 PM EDT for 4 states. It was in force for 63 min.
The area
The outline as issued.
The facts
- Issued
- Aug 7, 2008, 5:42 PM EDT (21:42 UTC)
- Expired
- Aug 7, 2008, 6:45 PM EDT
- In force
- 63 min
- Issued by
- the Storm Prediction Center
All 43 counties
New Castle County, DE, Anne Arundel County, MD, Baltimore County, MD, Calvert County, MD, Carroll County, MD, Cecil County, MD, Charles County, MD, City of Baltimore, MD, Harford County, MD, Howard County, MD, Kent County, MD, Montgomery County, MD, Prince George's County, MD, Queen Anne's County, MD, Saint Mary's County, MD, Talbot County, MD, Adams County, PA, Berks County, PA, Carbon County, PA, Chester County, PA, Columbia County, PA, Dauphin County, PA, Lancaster County, PA, Lebanon County, PA, Lehigh County, PA, Luzerne County, PA, Montgomery County, PA, Montour County, PA, Northumberland County, PA, Schuylkill County, PA, Sullivan County, PA, York County, PA, Arlington County, VA, Caroline County, VA, City of Alexandria, VA, City of Fairfax, VA, City of Falls Church, VA, City of Manassas Park, VA, Essex County, VA, Fairfax County, VA, King George County, VA, Richmond County, VA, Westmoreland County, VA
The radar
The Sterling radar (KLWX), 98 km from the middle of the area, began a volume at 22:02 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, 9.7 hours before the alert went out and 48 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
- 7 J/kg
- Mixed-layer CIN
- -130 J/kg
- Mixed-layer LCL
- 1654 m above ground
- 0-6 km bulk shear
- 42 kt
- 0-1 km storm-relative helicity
- 18 m²/s²
- 0-3 km storm-relative helicity
- 45 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 |
|---|---|---|---|---|
| Aug 7, 11:34 AM EDT | Mesoscale Discussion | SPC | Bradford, Lackawanna, Luzerne, Lycoming, McKean, Monroe and 7 more | 116 min |
| Aug 7, 4:25 PM EDT | Mesoscale Discussion | SPC | Bradford, Susquehanna, Wayne | 65 min |
Nearby
Mesoscale Discussions in Pennsylvania, 2008Mesoscale Discussions in Maryland, 2008Mesoscale Discussions in Virginia, 2008Every mesoscale discussion in 2008
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.