Alert archive / Virginia / Mesoscale Discussions in 2005
Mesoscale Discussion 427
The Storm Prediction Center issued this mesoscale discussion at Mar 28, 2005, 2:17 PM EST for Sussex County, Delaware; 9 counties in Maryland; 34 counties in Virginia. It was in force for 118 min.
The area
The outline as issued.
The facts
- Issued
- Mar 28, 2005, 2:17 PM EST (19:17 UTC)
- Expired
- Mar 28, 2005, 4:15 PM EST
- In force
- 118 min
- Issued by
- the Storm Prediction Center
All 44 counties
Sussex County, DE, Calvert County, MD, Caroline County, MD, Charles County, MD, Dorchester County, MD, Saint Mary's County, MD, Somerset County, MD, Talbot County, MD, Wicomico County, MD, Worcester County, MD, Accomack County, VA, Caroline County, VA, Charles City County, VA, Chesterfield County, VA, City of Colonial Heights, VA, City of Fredericksburg, VA, City of Hampton, VA, City of Hopewell, VA, City of Newport News, VA, City of Poquoson, VA, City of Richmond, VA, City of Williamsburg, VA, Essex County, VA, Gloucester County, VA, Hanover County, VA, Henrico County, VA, James City County, VA, King and Queen County, VA, King George County, VA, King William County, VA, Lancaster County, VA, Louisa County, VA, Mathews County, VA, Middlesex County, VA, New Kent County, VA, Northampton County, VA, Northumberland County, VA, Prince George County, VA, Richmond County, VA, Spotsylvania County, VA, Stafford County, VA, Surry County, VA, Westmoreland County, VA, York County, VA
The radar
The Norfolk radar (KAKQ), 117 km from the middle of the area, began a volume at 19:18 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 nearest sounding before it
Washington/Dulle, VA (KIAD), launched 12:00Z, 7.3 hours before the alert went out and 127 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
- 10 J/kg
- Mixed-layer CIN
- 0 J/kg
- Mixed-layer LCL
- 412 m above ground
- 0-6 km bulk shear
- 46 kt
- 0-1 km storm-relative helicity
- 300 m²/s²
- 0-3 km storm-relative helicity
- 345 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
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</html>SPC that day
Everything else SPC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Mar 28, 7:56 AM EST | Mesoscale Discussion | SPC | Brunswick, Greensville, Mecklenburg, Southampton, City of Chesapeake, City of Emporia and 3 more | 94 min |
| Mar 28, 8:30 AM EST | Tornado Watch | SPC | Brunswick, Greensville, Southampton, City of Chesapeake, City of Emporia, City of Franklin and 3 more | 5 hr |
Nearby
Mesoscale Discussions in Virginia, 2005Mesoscale Discussions in Maryland, 2005Mesoscale Discussions in Delaware, 2005Every mesoscale discussion in 2005
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.