Alert archive / Virginia / Mesoscale Discussions in 2003
Mesoscale Discussion 354
The Storm Prediction Center issued this mesoscale discussion at Mar 29, 2003, 4:33 PM EST for Charles County, Maryland; 32 counties in Virginia. It was in force for 117 min.
The area
The outline as issued.
The facts
- Issued
- Mar 29, 2003, 4:33 PM EST (21:33 UTC)
- Expired
- Mar 29, 2003, 6:30 PM EST
- In force
- 117 min
- Issued by
- the Storm Prediction Center
All 33 counties
Charles County, MD, Amelia County, VA, Brunswick County, VA, Caroline County, VA, Charles City County, VA, Charlotte County, VA, Chesterfield County, VA, City of Colonial Heights, VA, City of Fredericksburg, VA, City of Hopewell, VA, City of Petersburg, VA, City of Richmond, VA, Cumberland County, VA, Dinwiddie County, VA, Essex County, VA, Goochland County, VA, Hanover County, VA, Henrico County, VA, King and Queen County, VA, King George County, VA, King William County, VA, Louisa County, VA, Lunenburg County, VA, New Kent County, VA, Nottoway County, VA, Powhatan County, VA, Prince Edward County, VA, Prince George County, VA, Richmond County, VA, Spotsylvania County, VA, Stafford County, VA, Sussex County, VA, Westmoreland County, VA
The radar
The Norfolk radar (KAKQ), 88 km from the middle of the area, began a volume at 21:34 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, 9.6 hours before the alert went out and 153 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
- 1 J/kg
- Mixed-layer CIN
- -71 J/kg
- Mixed-layer LCL
- 529 m above ground
- 0-6 km bulk shear
- 48 kt
- 0-1 km storm-relative helicity
- 278 m²/s²
- 0-3 km storm-relative helicity
- 284 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 29, 12:01 PM EST | Mesoscale Discussion | SPC | Baltimore, Carroll, Charles, Frederick, Howard, Montgomery and 3 more | 89 min |
| Mar 29, 12:44 PM EST | Mesoscale Discussion | SPC | Greensville, Isle of Wight, James City, Southampton, Surry, Sussex and 4 more | 91 min |
Nearby
Mesoscale Discussions in Virginia, 2003Mesoscale Discussions in Maryland, 2003Every mesoscale discussion in 2003
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.