Alert archive / Pennsylvania / Mesoscale Discussions in 2017

Mesoscale Discussion 1304

July 13, 20179 counties in New Jersey; 24 counties in Pennsylvania

The Storm Prediction Center issued this mesoscale discussion at Jul 13, 2017, 2:33 PM EDT for 9 counties in New Jersey; 24 counties in Pennsylvania. It was in force for 57 min.

The area

The outline as issued.

The facts

Issued: Jul 13, 2017, 2:33 PM EDT (18:33 UTC)
Expired: Jul 13, 2017, 3:30 PM EDT
In force: 57 min
Issued by: the Storm Prediction Center
Chance of a watch: 80%

All 33 counties

Burlington County, NJ, Camden County, NJ, Gloucester County, NJ, Hunterdon County, NJ, Mercer County, NJ, Middlesex County, NJ, Ocean County, NJ, Somerset County, NJ, Warren County, NJ, Berks County, PA, Bucks County, PA, Carbon County, PA, Chester County, PA, Columbia County, PA, Dauphin County, PA, Delaware County, PA, Juniata County, PA, Lackawanna County, PA, Lancaster County, PA, Lebanon County, PA, Lehigh County, PA, Luzerne County, PA, Mifflin County, PA, Monroe County, PA, Montgomery County, PA, Montour County, PA, Northampton County, PA, Northumberland County, PA, Perry County, PA, Philadelphia County, PA, Schuylkill County, PA, Snyder County, PA, Union County, PA

The radar

The Philadelphia radar (KDIX), 152 km from the middle of the area, began a volume at 18:35 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 watches that followed

Watches SPC issued over any of the same counties within four hours of this discussion.

Severe Thunderstorm Watch 413Jul 13, 2:55 PM EDT

The text

As transmitted.

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SPC that day

Everything else SPC issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Jul 13, 11:09 AM EDT	Mesoscale Discussion	SPC	Atlantic, Bergen, Burlington, Camden, Cape May, Cumberland and 15 more	2 hr
Jul 13, 1:57 PM EDT	Severe Thunderstorm Watch	SPC	Bergen, Essex, Hudson, Morris, Passaic, Sussex and 1 more	5 hr
Jul 13, 2:57 PM EDT	Severe Thunderstorm Watch	SPC	Burlington, Camden, Gloucester, Hunterdon, Mercer, Middlesex and 4 more	6 hr
Jul 13, 4:43 PM EDT	Mesoscale Discussion	SPC	Bergen, Burlington, Camden, Essex, Gloucester, Hudson and 10 more	62 min
Jul 13, 6:23 PM EDT	Mesoscale Discussion	SPC	Burlington, Camden, Gloucester, Ocean	97 min

Nearby

Mesoscale Discussions in Pennsylvania, 2017 Mesoscale Discussions in New Jersey, 2017 Every mesoscale discussion in 2017

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.