Alert archive / Virginia / Severe Thunderstorm Watches in 2004

Severe Thunderstorm Watch 299

May 26, 20046 states

The Storm Prediction Center issued this severe thunderstorm watch at May 26, 2004, 5:45 PM EDT for 6 states. It was in force for 5 hr.

The area

The outline as issued.

The facts

Issued
May 26, 2004, 5:45 PM EDT (21:45 UTC)
Expired
May 26, 2004, 11:00 PM EDT
In force
5 hr
Issued by
the Storm Prediction Center
All 104 counties

New Castle County, DE, Anne Arundel County, MD, Baltimore County, MD, Calvert County, MD, Carroll County, MD, Cecil County, MD, Charles County, MD, City of Baltimore, MD, Frederick County, MD, Harford County, MD, Howard County, MD, Kent County, MD, Montgomery County, MD, Prince George's County, MD, Queen Anne's County, MD, Saint Mary's County, MD, Talbot County, MD, Washington County, MD, Caswell County, NC, Granville County, NC, Person County, NC, Rockingham County, NC, Stokes County, NC, Surry County, NC, Vance County, NC, Warren County, NC, Salem County, NJ, Albemarle County, VA, Amelia County, VA, Amherst County, VA, Appomattox County, VA, Arlington County, VA, Augusta County, VA, Bedford County, VA, Brunswick County, VA, Buckingham County, VA, Campbell County, VA, Caroline County, VA, Charlotte County, VA, Chesterfield County, VA, City of Alexandria, VA, City of Buena Vista, VA, City of Charlottesville, VA, City of Colonial Heights, VA, City of Danville, VA, City of Fairfax, VA, City of Falls Church, VA, City of Fredericksburg, VA, City of Harrisonburg, VA, City of Hopewell, VA, City of Lexington, VA, City of Lynchburg, VA, City of Manassas, VA, City of Manassas Park, VA, City of Martinsville, VA, City of Petersburg, VA, City of Richmond, VA, City of Roanoke, VA, City of Staunton, VA, City of Waynesboro, VA, City of Winchester, VA, Clarke County, VA, Culpeper County, VA, Cumberland County, VA, Dinwiddie County, VA, Essex County, VA, Fairfax County, VA, Fauquier County, VA, Fluvanna County, VA, Franklin County, VA, Frederick County, VA, Goochland County, VA, Greene County, VA, Halifax County, VA, Hanover County, VA, Henrico County, VA, Henry County, VA, King George County, VA, King William County, VA, Loudoun County, VA, Louisa County, VA, Lunenburg County, VA, Madison County, VA, Mecklenburg County, VA, Nelson County, VA, Nottoway County, VA, Orange County, VA, Page County, VA, Patrick County, VA, Pittsylvania County, VA, Powhatan County, VA, Prince Edward County, VA, Prince William County, VA, Rappahannock County, VA, Richmond County, VA, Rockbridge County, VA, Rockingham County, VA, Shenandoah County, VA, Spotsylvania County, VA, Stafford County, VA, Warren County, VA, Westmoreland County, VA, Berkeley County, WV, Jefferson County, WV

The radar

The Roanoke radar (KFCX), 159 km from the middle of the area, began a volume at 21:45 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.

Warnings issued inside it

16 tornado, severe thunderstorm and flash flood warnings for its counties while it was in force.

IssuedProductOfficeCountiesLasted
May 26, 5:45 PM EDTSevere Thunderstorm WarningRNKRockbridge, City of Buena Vista, City of Lexington45 min
May 26, 6:07 PM EDTSevere Thunderstorm WarningLWXAlbemarle, Nelson, City of Charlottesville53 min
May 26, 6:20 PM EDTSevere Thunderstorm WarningRNKBedford40 min
May 26, 7:20 PM EDTSevere Thunderstorm WarningRNKPittsylvania, City of Danville40 min
May 26, 7:42 PM EDTSevere Thunderstorm WarningAKQCumberland, Powhatan33 min
May 26, 7:46 PM EDTSevere Thunderstorm WarningRNKFranklin29 min
May 26, 7:53 PM EDTTornado WarningAKQGoochland37 min
May 26, 8:02 PM EDTSevere Thunderstorm WarningAKQAmelia28 min
May 26, 8:08 PM EDTSevere Thunderstorm WarningAKQChesterfield22 min
May 26, 8:13 PM EDTSevere Thunderstorm WarningRNKCharlotte, Halifax47 min
May 26, 8:25 PM EDTSevere Thunderstorm WarningRNKCaswell20 min
May 26, 8:27 PM EDTSevere Thunderstorm WarningAKQChesterfield, Dinwiddie, Prince George, City of Colonial Heights, City of Hopewell, City of Petersburg33 min
May 26, 8:38 PM EDTSevere Thunderstorm WarningRAHPerson22 min
May 26, 8:40 PM EDTSevere Thunderstorm WarningAKQMecklenburg20 min
May 26, 9:00 PM EDTTornado WarningAKQMecklenburg30 min
May 26, 9:03 PM EDTSevere Thunderstorm WarningRAHGranville27 min

Discussions around it

SPC mesoscale discussions over the same counties from four hours before the watch to its end.

The nearest sounding before it

Roanoke, VA (KRNK), launched 12:00Z, 9.8 hours before the alert went out and 89 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-pSkew-T log-p diagram, Roanoke, VA at 12:00Z on 2004-05-26Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 3 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Roanoke, VA at 12:00Z on 2004-05-26The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 156 square meters per square second.19395878Sfc1 km3 km6 km9 kmRMLM
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
3 J/kg
Mixed-layer CIN
-255 J/kg
Mixed-layer LCL
1222 m above ground
0-6 km bulk shear
30 kt
0-1 km storm-relative helicity
156 m²/s²
0-3 km storm-relative helicity
181 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

SPC that day

Everything else SPC issued on the same UTC day.

IssuedProductOfficeCountiesLasted
May 25, 9:50 PM EDTMesoscale DiscussionSPCKent, Sussex55 min
May 26, 12:55 PM EDTMesoscale DiscussionSPCAllegany, Garrett95 min
May 26, 5:15 PM EDTMesoscale DiscussionSPCCarroll2 hr
May 26, 3:50 PM EDTMesoscale DiscussionSPCAshe, Avery, Watauga85 min
May 26, 4:25 PM EDTSevere Thunderstorm WatchSPCAshe, Avery, Burke, Caldwell, McDowell, Madison and 3 more6 hr
May 26, 5:57 PM EDTMesoscale DiscussionSPCAlamance, Alexander, Anson, Cabarrus, Catawba, Chatham and 27 more63 min
May 26, 6:27 PM EDTMesoscale DiscussionSPCAvery, Burke, McDowell, Madison, Mitchell, Watauga and 1 more93 min
May 26, 6:55 PM EDTSevere Thunderstorm WatchSPCAlamance, Alexander, Avery, Buncombe, Burke, Cabarrus and 37 more5 hr
May 26, 1:38 PM EDTMesoscale DiscussionSPCAlbemarle, Alleghany, Amherst, Appomattox, Arlington, Augusta and 72 more97 min
May 26, 2:50 PM EDTSevere Thunderstorm WatchSPCAlleghany, Bath, Bland, Buchanan, Clarke, Craig and 20 more7 hr
May 26, 12:25 PM EDTSevere Thunderstorm WatchSPCMason7 hr
May 26, 2:18 PM EDTMesoscale DiscussionSPCMason87 min

Nearby

Severe Thunderstorm Watches in Virginia, 2004Severe Thunderstorm Watches in Maryland, 2004Severe Thunderstorm Watches in North Carolina, 2004Every severe thunderstorm watch 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.