Alert archive / Pennsylvania / Mesoscale Discussions in 2008

Mesoscale Discussion 2477

December 16, 20084 states

The Storm Prediction Center issued this mesoscale discussion at Dec 16, 2008, 11:55 PM EST for 4 states. It was in force for 4 hr.

The area

The outline as issued.

The facts

Issued: Dec 16, 2008, 11:55 PM EST (04:55 UTC)
Expired: Dec 17, 2008, 4:00 AM EST
In force: 4 hr
Issued by: the Storm Prediction Center

All 39 counties

Carroll County, MD, Bergen County, NJ, Essex County, NJ, Hudson County, NJ, Hunterdon County, NJ, Mercer County, NJ, Middlesex County, NJ, Morris County, NJ, Passaic County, NJ, Somerset County, NJ, Sussex County, NJ, Union County, NJ, Warren County, NJ, Bronx County, NY, Dutchess County, NY, New York County, NY, Orange County, NY, Putnam County, NY, Richmond County, NY, Rockland County, NY, Westchester County, NY, Adams County, PA, Berks County, PA, Bucks County, PA, Carbon County, PA, Chester County, PA, Cumberland County, PA, Dauphin County, PA, Delaware County, PA, Lancaster County, PA, Lebanon County, PA, Lehigh County, PA, Monroe County, PA, Montgomery County, PA, Northampton County, PA, Philadelphia County, PA, Pike County, PA, Schuylkill County, PA, York County, PA

The radar

The Philadelphia radar (KDIX), 87 km from the middle of the area, began a volume at 04:54 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 text

As transmitted, in the capitals the NWS used until 2016.

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SPC that day

Everything else SPC issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Dec 17, 6:36 AM EST	Mesoscale Discussion	SPC		4 hr

Nearby

Mesoscale Discussions in Pennsylvania, 2008 Mesoscale Discussions in New Jersey, 2008 Mesoscale Discussions in Connecticut, 2008 Every 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; radar from the NEXRAD Level II archive.