Alert archive / Virginia / Mesoscale Discussions in 2023
Mesoscale Discussion 1306
The Storm Prediction Center issued this mesoscale discussion at Jun 27, 2023, 2:43 PM EDT for 4 states. It was in force for 2 hr.
The area
The outline as issued.
The facts
- Issued
- Jun 27, 2023, 2:43 PM EDT (18:43 UTC)
- Expired
- Jun 27, 2023, 4:45 PM EDT
- In force
- 2 hr
- Issued by
- the Storm Prediction Center
- Concerning
- Severe potential...watch unlikely
- Chance of a watch
- 5%
All 29 counties
Kent County, DE, New Castle County, DE, Sussex County, DE, Calvert County, MD, Caroline County, MD, Dorchester County, MD, Queen Anne's County, MD, Saint Mary's County, MD, Somerset County, MD, Talbot County, MD, Wicomico County, MD, Worcester County, MD, Cumberland County, NJ, Gloucester County, NJ, Salem County, NJ, Accomack County, VA, Charles City County, 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, Northumberland County, VA, Richmond County, VA, Westmoreland County, VA
The radar
The Dover AFB radar (KDOX), 34 km from the middle of the area, began a volume at 18:42 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
Wallops Is Stn, VA (KWAL), launched 12:00Z, 6.7 hours before the alert went out and 91 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
- 8 J/kg
- Mixed-layer CIN
- -130 J/kg
- Mixed-layer LCL
- 1455 m above ground
- 0-6 km bulk shear
- 25 kt
- 0-1 km storm-relative helicity
- 48 m²/s²
- 0-3 km storm-relative helicity
- 67 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
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</html>SPC that day
Everything else SPC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 26, 8:03 PM EDT | Mesoscale Discussion | SPC | Kent, New Castle | 87 min |
| Jun 26, 10:50 PM EDT | Mesoscale Discussion | SPC | New Castle | 55 min |
| Jun 26, 9:13 PM EDT | Mesoscale Discussion | SPC | Saint Mary's, Somerset, Wicomico, Worcester | 62 min |
| Jun 27, 12:02 AM EDT | Mesoscale Discussion | SPC | Somerset, Worcester | 118 min |
Nearby
Mesoscale Discussions in Virginia, 2023Mesoscale Discussions in Maryland, 2023Mesoscale Discussions in Delaware, 2023Every mesoscale discussion in 2023
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.