Alert archive / Virginia / Mesoscale Discussions in 2020

Mesoscale Discussion 1392

August 4, 20204 states

The Storm Prediction Center issued this mesoscale discussion at Aug 4, 2020, 5:15 AM EDT for 4 states. It was in force for 3 hr.

The area

The outline as issued.

The facts

Issued: Aug 4, 2020, 5:15 AM EDT (09:15 UTC)
Expired: Aug 4, 2020, 8:15 AM EDT
In force: 3 hr
Issued by: the Storm Prediction Center
Concerning: Tornado watch 415

All 37 counties

Kent County, DE, New Castle County, DE, Sussex County, DE, Calvert County, MD, Caroline County, MD, Cecil County, MD, Dorchester County, MD, Kent County, MD, Queen Anne's County, MD, Saint Mary's County, MD, Somerset County, MD, Talbot County, MD, Wicomico County, MD, Worcester County, MD, Atlantic County, NJ, Burlington County, NJ, Camden County, NJ, Cape May County, NJ, Cumberland County, NJ, Gloucester County, NJ, Salem County, NJ, Accomack County, VA, City of Poquoson, VA, City of Williamsburg, VA, Essex County, VA, Gloucester County, VA, James City County, VA, King and Queen County, VA, Lancaster County, VA, Mathews County, VA, Middlesex County, VA, New Kent County, VA, Northampton County, VA, Northumberland County, VA, Richmond County, VA, Westmoreland County, VA, York County, VA

The radar

The Dover AFB radar (KDOX), 39 km from the middle of the area, began a volume at 09:18 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.

Tornado Watch 416Aug 4, 7:20 AM 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
Aug 4, 1:41 AM EDT	Mesoscale Discussion	SPC	Kent, Sussex	3 hr
Aug 4, 2:26 AM EDT	Tornado Watch	SPC	Kent, New Castle, Sussex	9 hr
Aug 4, 6:45 AM EDT	Mesoscale Discussion	SPC	Atlantic, Bergen, Burlington, Camden, Cumberland, Essex and 14 more	3 hr
Aug 4, 7:23 AM EDT	Tornado Watch	SPC	Atlantic, Bergen, Burlington, Camden, Essex, Gloucester and 12 more	9 hr
Aug 4, 8:59 AM EDT	Mesoscale Discussion	SPC	Atlantic, Burlington, Camden, Cape May, Cumberland, Gloucester and 5 more	91 min
Aug 4, 11:13 AM EDT	Mesoscale Discussion	SPC	Bergen, Burlington, Camden, Essex, Hudson, Hunterdon and 8 more	92 min
Aug 3, 8:49 PM EDT	Tornado Watch	SPC	Isle of Wight, York, City of Chesapeake, City of Hampton, City of Newport News, City of Norfolk and 4 more	9 hr
Aug 4, 12:02 AM EDT	Mesoscale Discussion	SPC	Brunswick, Charles City, Chesterfield, Dinwiddie, Gloucester, Greensville and 31 more	118 min
Aug 4, 2:43 AM EDT	Mesoscale Discussion	SPC	Isle of Wight, Prince George, Southampton, Surry, Sussex, City of Chesapeake and 9 more	92 min

Nearby

Mesoscale Discussions in Virginia, 2020 Mesoscale Discussions in Maryland, 2020 Mesoscale Discussions in New Jersey, 2020 Every mesoscale discussion in 2020

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.