Alert archive / Virginia / Mesoscale Discussions in 2004

Mesoscale Discussion 1043

June 1, 20044 states

The Storm Prediction Center issued this mesoscale discussion at Jun 1, 2004, 7:24 PM EDT for 4 states. It was in force for 66 min.

The area

The outline as issued.

The facts

Issued: Jun 1, 2004, 7:24 PM EDT (23:24 UTC)
Expired: Jun 1, 2004, 8:30 PM EDT
In force: 66 min
Issued by: the Storm Prediction Center

All 61 counties

Pike County, KY, Garrett County, MD, Albemarle County, VA, Alleghany County, VA, Amherst County, VA, Augusta County, VA, Bath County, VA, Bedford County, VA, Bland County, VA, Botetourt County, VA, Buchanan County, VA, City of Buena Vista, VA, City of Charlottesville, VA, City of Covington, VA, City of Harrisonburg, VA, City of Lexington, VA, City of Radford, VA, City of Roanoke, VA, City of Salem, VA, City of Staunton, VA, City of Waynesboro, VA, Craig County, VA, Giles County, VA, Greene County, VA, Highland County, VA, Montgomery County, VA, Nelson County, VA, Page County, VA, Pulaski County, VA, Roanoke County, VA, Rockbridge County, VA, Rockingham County, VA, Shenandoah County, VA, Tazewell County, VA, Barbour County, WV, Braxton County, WV, Fayette County, WV, Grant County, WV, Greenbrier County, WV, Hampshire County, WV, Hardy County, WV, Harrison County, WV, Lewis County, WV, Marion County, WV, McDowell County, WV, Mercer County, WV, Mineral County, WV, Monongalia County, WV, Monroe County, WV, Nicholas County, WV, Pendleton County, WV, Pocahontas County, WV, Preston County, WV, Raleigh County, WV, Randolph County, WV, Summers County, WV, Taylor County, WV, Tucker County, WV, Upshur County, WV, Webster County, WV, Wyoming County, WV

The radar

The Charleston,WV radar (KRLX), 99 km from the middle of the area, began a volume at 23:27 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

Roanoke, VA (KRNK), launched 12:00Z, 11.4 hours before the alert went out and 144 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: 27 J/kg
Mixed-layer CIN: -19 J/kg
Mixed-layer LCL: 991 m above ground
0-6 km bulk shear: 69 kt
0-1 km storm-relative helicity: -6 m²/s²
0-3 km storm-relative helicity: -4 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
Jun 1, 2:30 PM EDT	Mesoscale Discussion	SPC	Anderson, Ballard, Bath, Boone, Bourbon, Boyd and 70 more	60 min
Jun 1, 3:30 PM EDT	Severe Thunderstorm Watch	SPC	Ballard, Breckinridge, Caldwell, Carlisle, Christian, Crittenden and 16 more	8 hr
Jun 1, 3:55 PM EDT	Severe Thunderstorm Watch	SPC	Adair, Allen, Anderson, Barren, Bath, Bell and 90 more	7 hr
Jun 1, 4:56 PM EDT	Mesoscale Discussion	SPC	Adair, Allen, Anderson, Barren, Bath, Bell and 89 more	34 min
Jun 1, 5:15 PM EDT	Severe Thunderstorm Watch	SPC	Pike	5 hr
Jun 1, 11:11 AM EDT	Mesoscale Discussion	SPC	Allegany, Anne Arundel, Baltimore, Calvert, Caroline, Carroll and 17 more	64 min
Jun 1, 11:45 AM EDT	Severe Thunderstorm Watch	SPC	Allegany, Anne Arundel, Baltimore, Calvert, Caroline, Carroll and 17 more	6 hr
Jun 1, 4:22 PM EDT	Mesoscale Discussion	SPC	Allegany, Anne Arundel, Baltimore, Calvert, Caroline, Carroll and 17 more	53 min

Nearby

Mesoscale Discussions in Virginia, 2004 Mesoscale Discussions in West Virginia, 2004 Mesoscale Discussions in Kentucky, 2004 Every 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; radar from the NEXRAD Level II archive.