Alert archive / Virginia / Severe Thunderstorm Watches in 2001
Severe Thunderstorm Watch 466
The Storm Prediction Center issued this severe thunderstorm watch at Jun 22, 2001, 2:00 PM EDT for 4 states. It was in force for 5 hr.
The area
The outline as issued.
The facts
- Issued
- Jun 22, 2001, 2:00 PM EDT (18:00 UTC)
- Expired
- Jun 22, 2001, 7:00 PM EDT
- In force
- 5 hr
- Issued by
- the Storm Prediction Center
All 94 counties
Anne Arundel County, MD, Baltimore County, MD, Carroll County, MD, Cecil County, MD, Charles County, MD, City of Baltimore, MD, Frederick County, MD, Harford County, MD, Howard County, MD, Montgomery County, MD, Prince George's County, MD, Washington County, MD, Adams County, PA, Berks County, PA, Chester County, PA, Cumberland County, PA, Dauphin County, PA, Franklin County, PA, Lancaster County, PA, Lebanon County, PA, Lehigh County, PA, Montgomery County, PA, Northampton County, PA, Perry County, PA, Schuylkill County, PA, Snyder County, PA, York County, PA, Albemarle County, VA, Amelia County, VA, Amherst County, VA, Appomattox County, VA, Arlington County, VA, Augusta County, VA, Bedford County, VA, Botetourt County, VA, Buckingham County, VA, Campbell County, VA, Caroline County, VA, Charlotte County, VA, City of Alexandria, VA, City of Buena Vista, VA, City of Charlottesville, VA, City of Danville, VA, City of Fairfax, VA, City of Falls Church, VA, City of Fredericksburg, 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 Roanoke, VA, City of Salem, VA, City of Staunton, VA, City of Waynesboro, VA, City of Winchester, VA, Clarke 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, Goochland County, VA, Greene County, VA, Halifax County, VA, Hanover County, VA, Henry County, VA, King George County, VA, Loudoun County, VA, Louisa County, VA, Lunenburg County, VA, Madison 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, Rockbridge County, VA, Rockingham County, VA, Shenandoah County, VA, Spotsylvania County, VA, Stafford County, VA, Warren County, VA, Berkeley County, WV, Jefferson County, WV
The radar
The Sterling radar (KLWX), 109 km from the middle of the area, began a volume at 18:00 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
36 tornado, severe thunderstorm and flash flood warnings for its counties while it was in force.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 22, 2:00 PM EDT | Severe Thunderstorm Warning | LWX | Frederick, City of Winchester | 45 min |
| Jun 22, 2:07 PM EDT | Severe Thunderstorm Warning | PHI | Lehigh | 23 min |
| Jun 22, 2:12 PM EDT | Severe Thunderstorm Warning | PHI | Berks | 33 min |
| Jun 22, 2:43 PM EDT | Severe Thunderstorm Warning | PHI | Northampton | 47 min |
| Jun 22, 3:00 PM EDT | Severe Thunderstorm Warning | PHI | Berks | 45 min |
| Jun 22, 3:21 PM EDT | Flash Flood Warning | PHI | Berks | 3 hr |
| Jun 22, 3:54 PM EDT | Flash Flood Warning | PHI | Lehigh, Northampton | 3 hr |
| Jun 22, 3:56 PM EDT | Severe Thunderstorm Warning | LWX | Frederick | 49 min |
| Jun 22, 4:05 PM EDT | Severe Thunderstorm Warning | CTP | Lancaster | 25 min |
| Jun 22, 4:08 PM EDT | Tornado Warning | LWX | Clarke, Warren | 37 min |
| Jun 22, 4:13 PM EDT | Flash Flood Warning | LWX | Frederick, City of Winchester | 3 hr |
| Jun 22, 4:20 PM EDT | Severe Thunderstorm Warning | LWX | Culpeper, Fauquier, Rappahannock | 55 min |
| Jun 22, 4:23 PM EDT | Flash Flood Warning | LWX | Shenandoah, Warren | 3 hr |
| Jun 22, 4:30 PM EDT | Flash Flood Warning | CTP | Dauphin, York | 3 hr |
| Jun 22, 4:34 PM EDT | Severe Thunderstorm Warning | LWX | Montgomery | 41 min |
| Jun 22, 4:40 PM EDT | Flash Flood Warning | LWX | Nelson | 3 hr |
| Jun 22, 4:41 PM EDT | Severe Thunderstorm Warning | CTP | York | 49 min |
| Jun 22, 4:43 PM EDT | Severe Thunderstorm Warning | LWX | Frederick | 47 min |
| Jun 22, 4:48 PM EDT | Severe Thunderstorm Warning | RNK | Bedford | 42 min |
| Jun 22, 5:00 PM EDT | Severe Thunderstorm Warning | RNK | Patrick | 45 min |
| Jun 22, 5:08 PM EDT | Severe Thunderstorm Warning | RNK | Franklin | 52 min |
| Jun 22, 5:18 PM EDT | Severe Thunderstorm Warning | CTP | Lancaster | 27 min |
| Jun 22, 5:23 PM EDT | Tornado Warning | CTP | Lancaster | 37 min |
| Jun 22, 5:28 PM EDT | Flash Flood Warning | RNK | Franklin | 3 hr |
| Jun 22, 5:34 PM EDT | Flash Flood Warning | LWX | Montgomery | 116 min |
| Jun 22, 5:56 PM EDT | Flash Flood Warning | RNK | Bedford | 3 hr |
| Jun 22, 5:57 PM EDT | Tornado Warning | CTP | Lancaster | 33 min |
| Jun 22, 6:03 PM EDT | Severe Thunderstorm Warning | LWX | Montgomery | 57 min |
| Jun 22, 6:08 PM EDT | Flash Flood Warning | PHI | Berks | 2 hr |
| Jun 22, 6:09 PM EDT | Flash Flood Warning | LWX | Rockingham | 3 hr |
| Jun 22, 6:11 PM EDT | Flash Flood Warning | CTP | Lancaster | 3 hr |
| Jun 22, 6:45 PM EDT | Flash Flood Warning | RNK | Campbell, City of Lynchburg | 2 hr |
| Jun 22, 6:48 PM EDT | Flash Flood Warning | PHI | Chester | 117 min |
| Jun 22, 6:55 PM EDT | Severe Thunderstorm Warning | PHI | Cecil | 35 min |
| Jun 22, 6:58 PM EDT | Flash Flood Warning | LWX | Carroll | 3 hr |
| Jun 22, 6:58 PM EDT | Flash Flood Warning | PHI | Lehigh | 2 hr |
The nearest sounding before it
Washington/Dulle, VA (KIAD), launched 12:00Z, 6.0 hours before the alert went out and 112 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
- 933 J/kg
- Mixed-layer CIN
- -78 J/kg
- Mixed-layer LCL
- 704 m above ground
- 0-6 km bulk shear
- 24 kt
- 0-1 km storm-relative helicity
- 108 m²/s²
- 0-3 km storm-relative helicity
- 103 m²/s²
- Significant tornado parameter
- 0.2
- Supercell composite
- 1.3
The text
The text of this product is not in the archive. The NWS text archive before 2002 is incomplete.
SPC that day
Everything else SPC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 22, 7:00 PM EDT | Severe Thunderstorm Watch | SPC | Anne Arundel, Baltimore, Calvert, Carroll, Cecil, Charles and 8 more | 4 hr |
Nearby
Severe Thunderstorm Watches in Virginia, 2001Severe Thunderstorm Watches in Pennsylvania, 2001Severe Thunderstorm Watches in Maryland, 2001Every severe thunderstorm watch in 2001
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.