Alert archive / Pennsylvania / Mesoscale Discussions in 2013

Mesoscale Discussion 1333

July 7, 20134 states

The Storm Prediction Center issued this mesoscale discussion at Jul 7, 2013, 12:48 PM EDT for 4 states. It was in force for 117 min.

The area

The outline as issued.

The facts

Issued: Jul 7, 2013, 12:48 PM EDT (16:48 UTC)
Expired: Jul 7, 2013, 2:45 PM EDT
In force: 117 min
Issued by: the Storm Prediction Center
Chance of a watch: 80%

All 41 counties

Allegany County, MD, Garrett County, MD, Washington County, MD, Bedford County, PA, Blair County, PA, Cambria County, PA, Centre County, PA, Clinton County, PA, Cumberland County, PA, Franklin County, PA, Fulton County, PA, Huntingdon County, PA, Juniata County, PA, Mifflin County, PA, Perry County, PA, Snyder County, PA, Somerset County, PA, Union County, PA, Augusta County, VA, Bath County, VA, City of Harrisonburg, VA, City of Staunton, VA, City of Winchester, VA, Clarke County, VA, Frederick County, VA, Highland County, VA, Page County, VA, Rockingham County, VA, Shenandoah County, VA, Warren County, VA, Berkeley County, WV, Grant County, WV, Hampshire County, WV, Hardy County, WV, Jefferson County, WV, Mineral County, WV, Morgan County, WV, Pendleton County, WV, Pocahontas County, WV, Randolph County, WV, Tucker County, WV

The radar

The Sterling radar (KLWX), 126 km from the middle of the area, began a volume at 16:50 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 394Jul 7, 1:15 PM EDT

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
Jul 7, 1:16 PM EDT	Severe Thunderstorm Watch	SPC	Allegany, Anne Arundel, Baltimore, Carroll, Frederick, Harford and 5 more	6 hr
Jul 7, 3:19 PM EDT	Mesoscale Discussion	SPC	Baltimore, Carroll, Frederick, Harford, Howard, Montgomery and 2 more	116 min
Jul 7, 4:45 PM EDT	Severe Thunderstorm Watch	SPC	Cecil	5 hr
Jul 7, 6:09 PM EDT	Mesoscale Discussion	SPC	Anne Arundel, Baltimore, Cecil, Harford, Howard, Kent and 3 more	66 min

Nearby

Mesoscale Discussions in Pennsylvania, 2013 Mesoscale Discussions in Virginia, 2013 Mesoscale Discussions in West Virginia, 2013 Every mesoscale discussion in 2013

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.