Alert archive / Virginia / Mesoscale Discussions in 2004
Mesoscale Discussion 562
The Storm Prediction Center issued this mesoscale discussion at May 2, 2004, 7:24 PM EDT for Charles County, Prince George's County, Maryland; 61 counties in Virginia. It was in force for 2 hr.
The area
The outline as issued.
The facts
- Issued
- May 2, 2004, 7:24 PM EDT (23:24 UTC)
- Expired
- May 2, 2004, 9:30 PM EDT
- In force
- 2 hr
- Issued by
- the Storm Prediction Center
All 63 counties
Charles County, MD, Prince George's County, MD, Albemarle County, VA, Amelia County, VA, Appomattox County, VA, Arlington County, VA, Brunswick County, VA, Buckingham County, VA, Caroline County, VA, Charles City County, VA, Charlotte County, VA, Chesterfield County, VA, City of Alexandria, VA, City of Charlottesville, VA, City of Colonial Heights, VA, City of Emporia, VA, City of Fairfax, VA, City of Franklin, VA, City of Fredericksburg, VA, City of Hopewell, VA, City of Manassas, VA, City of Manassas Park, VA, City of Petersburg, VA, City of Richmond, VA, City of Suffolk, VA, City of Williamsburg, VA, Culpeper County, VA, Cumberland County, VA, Dinwiddie County, VA, Essex County, VA, Fairfax County, VA, Fauquier County, VA, Fluvanna County, VA, Goochland County, VA, Greene County, VA, Greensville County, VA, Hanover County, VA, Henrico County, VA, Isle of Wight County, VA, James City County, VA, King and Queen County, VA, King George County, VA, King William County, VA, Louisa County, VA, Lunenburg County, VA, Madison County, VA, Mecklenburg County, VA, Nelson County, VA, New Kent County, VA, Nottoway County, VA, Orange County, VA, Powhatan County, VA, Prince Edward County, VA, Prince George County, VA, Prince William County, VA, Rappahannock County, VA, Richmond County, VA, Southampton County, VA, Spotsylvania County, VA, Stafford County, VA, Surry County, VA, Sussex County, VA, Westmoreland County, VA
The nearest sounding before it
Roanoke, VA (KRNK), launched 12:00Z, 11.4 hours before the alert went out and 124 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
- -70 J/kg
- Mixed-layer LCL
- 745 m above ground
- 0-6 km bulk shear
- 37 kt
- 0-1 km storm-relative helicity
- 172 m²/s²
- 0-3 km storm-relative helicity
- 168 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 |
|---|---|---|---|---|
| May 2, 1:21 PM EDT | Mesoscale Discussion | SPC | Allegany, Frederick, Garrett, Washington | 114 min |
| May 2, 3:20 PM EDT | Severe Thunderstorm Watch | SPC | Allegany, Frederick, Washington | 6 hr |
| May 2, 5:45 PM EDT | Severe Thunderstorm Watch | SPC | Charles, Prince George's | 5 hr |
| May 2, 5:48 PM EDT | Mesoscale Discussion | SPC | Baltimore, Carroll, Frederick, Howard, Montgomery, Prince George's and 1 more | 117 min |
Nearby
Mesoscale Discussions in Virginia, 2004Mesoscale Discussions in Maryland, 2004Every mesoscale discussion in 2004
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.