Alert archive / Virginia / Severe Thunderstorm Watches in 2004
Severe Thunderstorm Watch 287
The Storm Prediction Center issued this severe thunderstorm watch at May 25, 2004, 3:20 PM EDT for 4 states. It was in force for 6 hr.
The area
The outline as issued.
The facts
- Issued
- May 25, 2004, 3:20 PM EDT (19:20 UTC)
- Expired
- May 25, 2004, 9:00 PM EDT
- In force
- 6 hr
- Issued by
- the Storm Prediction Center
All 113 counties
Allegany County, MD, Carroll County, MD, Frederick County, MD, Garrett County, MD, Howard County, MD, Montgomery County, MD, Washington County, MD, Adams County, PA, Bedford County, PA, Berks County, PA, Blair County, PA, Cambria County, PA, Cumberland County, PA, Dauphin County, PA, Franklin County, PA, Fulton County, PA, Huntingdon County, PA, Juniata County, PA, Lancaster County, PA, Lebanon County, PA, Mifflin County, PA, Perry County, PA, Somerset County, PA, York County, PA, Albemarle County, VA, Alleghany County, VA, Amherst County, VA, Appomattox County, VA, Arlington County, VA, Augusta County, VA, Bath County, VA, Bedford County, VA, Bland County, VA, Botetourt County, VA, Buckingham County, VA, Campbell County, VA, Carroll County, VA, Charlotte County, VA, City of Buena Vista, VA, City of Charlottesville, VA, City of Covington, VA, City of Danville, VA, City of Fairfax, VA, City of Falls Church, VA, City of Galax, VA, City of Harrisonburg, VA, City of Lexington, VA, City of Lynchburg, VA, City of Manassas, VA, City of Manassas Park, VA, City of Martinsville, VA, City of Radford, VA, City of Roanoke, VA, City of Salem, VA, City of Staunton, VA, City of Waynesboro, VA, City of Winchester, VA, Clarke County, VA, Craig County, VA, Culpeper County, VA, Cumberland County, VA, Fairfax County, VA, Fauquier County, VA, Floyd County, VA, Fluvanna County, VA, Franklin County, VA, Frederick County, VA, Giles County, VA, Grayson County, VA, Greene County, VA, Halifax County, VA, Henry County, VA, Highland County, VA, Loudoun County, VA, Louisa County, VA, Madison County, VA, Montgomery County, VA, Nelson County, VA, Orange County, VA, Page County, VA, Patrick County, VA, Pittsylvania County, VA, Prince Edward County, VA, Prince William County, VA, Pulaski County, VA, Rappahannock County, VA, Roanoke County, VA, Rockbridge County, VA, Rockingham County, VA, Shenandoah County, VA, Smyth County, VA, Spotsylvania County, VA, Stafford County, VA, Warren County, VA, Wythe County, VA, Barbour County, WV, Berkeley County, WV, Grant County, WV, Greenbrier County, WV, Hampshire County, WV, Hardy County, WV, Jefferson County, WV, Mercer County, WV, Mineral County, WV, Monroe County, WV, Morgan County, WV, Pendleton County, WV, Pocahontas County, WV, Preston County, WV, Randolph County, WV, Summers County, WV, Tucker County, WV, Webster County, WV
The radar
The Roanoke radar (KFCX), 145 km from the middle of the area, began a volume at 19:22 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
33 tornado, severe thunderstorm and flash flood warnings for its counties while it was in force.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| May 25, 4:05 PM EDT | Severe Thunderstorm Warning | CTP | Bedford, Huntingdon | 40 min |
| May 25, 4:05 PM EDT | Severe Thunderstorm Warning | CTP | Cambria | 85 min |
| May 25, 4:12 PM EDT | Severe Thunderstorm Warning | PBZ | Preston | 63 min |
| May 25, 4:13 PM EDT | Severe Thunderstorm Warning | CTP | Fulton | 47 min |
| May 25, 4:23 PM EDT | Severe Thunderstorm Warning | CTP | Blair | 52 min |
| May 25, 4:37 PM EDT | Severe Thunderstorm Warning | CTP | Cumberland | 38 min |
| May 25, 4:41 PM EDT | Severe Thunderstorm Warning | RNK | Mercer | 49 min |
| May 25, 4:52 PM EDT | Severe Thunderstorm Warning | LWX | Washington | 53 min |
| May 25, 4:52 PM EDT | Severe Thunderstorm Warning | CTP | Bedford | 53 min |
| May 25, 4:56 PM EDT | Severe Thunderstorm Warning | RLX | Randolph | 34 min |
| May 25, 4:58 PM EDT | Severe Thunderstorm Warning | PBZ | Garrett | 62 min |
| May 25, 5:06 PM EDT | Severe Thunderstorm Warning | LWX | Morgan | 39 min |
| May 25, 5:21 PM EDT | Severe Thunderstorm Warning | CTP | Franklin | 39 min |
| May 25, 5:29 PM EDT | Tornado Warning | LWX | Washington | 61 min |
| May 25, 5:30 PM EDT | Severe Thunderstorm Warning | RNK | Giles | 45 min |
| May 25, 5:46 PM EDT | Severe Thunderstorm Warning | LWX | Frederick | 59 min |
| May 25, 5:51 PM EDT | Tornado Warning | LWX | Frederick | 54 min |
| May 25, 5:51 PM EDT | Severe Thunderstorm Warning | LWX | Page | 54 min |
| May 25, 5:54 PM EDT | Severe Thunderstorm Warning | LWX | Berkeley | 51 min |
| May 25, 6:01 PM EDT | Severe Thunderstorm Warning | RNK | Montgomery, Pulaski, City of Radford | 44 min |
| May 25, 6:02 PM EDT | Severe Thunderstorm Warning | LWX | Jefferson | 58 min |
| May 25, 6:06 PM EDT | Severe Thunderstorm Warning | LWX | Carroll | 54 min |
| May 25, 6:11 PM EDT | Tornado Warning | LWX | Jefferson | 34 min |
| May 25, 6:28 PM EDT | Severe Thunderstorm Warning | LWX | Loudoun | 77 min |
| May 25, 6:41 PM EDT | Tornado Warning | LWX | Loudoun | 49 min |
| May 25, 6:44 PM EDT | Severe Thunderstorm Warning | LWX | Frederick | 46 min |
| May 25, 6:50 PM EDT | Severe Thunderstorm Warning | LWX | Culpeper, Madison | 55 min |
| May 25, 6:58 PM EDT | Severe Thunderstorm Warning | RNK | Bland, Tazewell | 47 min |
| May 25, 6:59 PM EDT | Severe Thunderstorm Warning | LWX | Howard, Montgomery | 61 min |
| May 25, 7:22 PM EDT | Flash Flood Warning | LWX | Montgomery | 4 hr |
| May 25, 7:47 PM EDT | Severe Thunderstorm Warning | LWX | Arlington, Fairfax, City of Alexandria, City of Fairfax, City of Falls Church | 43 min |
| May 25, 7:57 PM EDT | Severe Thunderstorm Warning | LWX | Montgomery | 63 min |
| May 25, 8:14 PM EDT | Tornado Warning | LWX | Fairfax, City of Alexandria | 46 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, 7.3 hours before the alert went out and 108 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
- 97 J/kg
- Mixed-layer CIN
- -120 J/kg
- Mixed-layer LCL
- 1040 m above ground
- 0-6 km bulk shear
- 35 kt
- 0-1 km storm-relative helicity
- 105 m²/s²
- 0-3 km storm-relative helicity
- 57 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
SPC that day
Everything else SPC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| May 25, 2:58 PM EDT | Mesoscale Discussion | SPC | Allegany, Garrett, Washington | 92 min |
| May 25, 6:09 PM EDT | Mesoscale Discussion | SPC | Allegany, Anne Arundel, Baltimore, Calvert, Caroline, Carroll and 15 more | 2 hr |
| May 25, 7:25 PM EDT | Severe Thunderstorm Watch | SPC | Anne Arundel, Calvert, Caroline, Cecil, Charles, Dorchester and 7 more | 4 hr |
| May 25, 12:54 PM EDT | Mesoscale Discussion | SPC | Allegheny, Beaver, Crawford, Greene, Lawrence, Mercer and 1 more | 96 min |
| May 25, 1:30 PM EDT | Severe Thunderstorm Watch | SPC | Allegheny, Armstrong, Beaver, Butler, Clarion, Fayette and 6 more | 7 hr |
| May 25, 3:57 PM EDT | Mesoscale Discussion | SPC | Allegheny, Armstrong, Beaver, Butler, Clarion, Fayette and 6 more | 63 min |
Nearby
Severe Thunderstorm Watches in Virginia, 2004Severe Thunderstorm Watches in West Virginia, 2004Severe Thunderstorm Watches in Pennsylvania, 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.