Alert archive / Virginia / Mesoscale Discussions in 2003

Mesoscale Discussion 1165

May 31, 20034 states

The Storm Prediction Center issued this mesoscale discussion at May 31, 2003, 1:06 PM EDT for 4 states. It was in force for 114 min.

The area

The outline as issued.

The facts

Issued: May 31, 2003, 1:06 PM EDT (17:06 UTC)
Expired: May 31, 2003, 3:00 PM EDT
In force: 114 min
Issued by: the Storm Prediction Center

All 51 counties

Carroll County, MD, Frederick County, MD, Howard County, MD, Montgomery County, MD, Washington County, MD, Adams County, PA, Franklin County, PA, Albemarle County, VA, Amelia County, VA, Appomattox County, VA, Arlington County, VA, Buckingham County, VA, Campbell County, VA, Caroline County, VA, Charlotte County, VA, City of Alexandria, VA, City of Charlottesville, VA, City of Danville, VA, City of Fairfax, VA, City of Falls Church, VA, City of Fredericksburg, VA, City of Lynchburg, VA, City of Manassas, VA, City of Manassas Park, VA, Clarke County, VA, Culpeper County, VA, Cumberland County, VA, Fairfax County, VA, Fauquier County, VA, Fluvanna County, VA, Goochland County, VA, Greene County, VA, Halifax County, VA, Hanover County, VA, Loudoun County, VA, Louisa County, VA, Lunenburg County, VA, Madison County, VA, Nelson County, VA, Nottoway County, VA, Orange County, VA, Pittsylvania County, VA, Powhatan County, VA, Prince Edward County, VA, Prince William County, VA, Rappahannock County, VA, Spotsylvania County, VA, Stafford County, VA, Warren County, VA, Berkeley County, WV, Jefferson County, WV

The watches that followed

Watches SPC issued over any of the same counties within four hours of this discussion.

The nearest sounding before it

Washington/Dulle, VA (KIAD), launched 12:00Z, 5.1 hours before the alert went out and 126 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.

Skew-T log-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.

Mixed-layer CAPE: 20 J/kg
Mixed-layer CIN: -111 J/kg
Mixed-layer LCL: 1330 m above ground
0-6 km bulk shear: 32 kt
0-1 km storm-relative helicity: 46 m²/s²
0-3 km storm-relative helicity: 88 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

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SPC that day

Everything else SPC issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
May 31, 1:40 PM EDT	Severe Thunderstorm Watch	SPC	Anne Arundel, Baltimore, Calvert, Caroline, Carroll, Cecil and 15 more	5 hr
May 31, 3:58 PM EDT	Mesoscale Discussion	SPC	Anne Arundel, Baltimore, Calvert, Caroline, Carroll, Cecil and 14 more	2 hr
May 31, 2:05 PM EDT	Tornado Watch	SPC	Henry, City of Danville	6 hr
May 31, 2:30 PM EDT	Tornado Watch	SPC	Amelia, Amherst, Appomattox, Brunswick, Buckingham, Campbell and 40 more	6 hr
May 31, 6:37 PM EDT	Mesoscale Discussion	SPC	Brunswick, Charles City, Chesterfield, Dinwiddie, Greensville, Henrico and 22 more	83 min
May 31, 2:01 AM EDT	Mesoscale Discussion	SPC	Cabell, Jackson, Lincoln, Mason, Putnam, Wayne and 1 more	59 min
May 31, 3:32 AM EDT	Mesoscale Discussion	SPC	Cabell, Jackson, Lincoln, Mason, Putnam, Wayne	28 min

Nearby

Mesoscale Discussions in Virginia, 2003 Mesoscale Discussions in Maryland, 2003 Mesoscale Discussions in Pennsylvania, 2003 Every 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.