Alert archive / Virginia / Severe Thunderstorm Watches in 2005
Severe Thunderstorm Watch 693
The Storm Prediction Center issued this severe thunderstorm watch at Jul 27, 2005, 1:50 PM EDT for 7 states. It was in force for 8 hr.
The area
The outline as issued.
The facts
- Issued
- Jul 27, 2005, 1:50 PM EDT (17:50 UTC)
- Expired
- Jul 27, 2005, 10:00 PM EDT
- In force
- 8 hr
- Issued by
- the Storm Prediction Center
All 111 counties
Kent County, DE, New Castle County, DE, Sussex County, DE, Anne Arundel County, MD, Baltimore County, MD, Calvert County, MD, Caroline County, MD, Carroll County, MD, Cecil County, MD, Charles County, MD, City of Baltimore, MD, Dorchester County, 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, Somerset County, MD, Talbot County, MD, Washington County, MD, Wicomico County, MD, Atlantic County, NJ, Burlington County, NJ, Camden County, NJ, Cape May County, NJ, Cumberland County, NJ, Essex County, NJ, Gloucester County, NJ, Hudson County, NJ, Hunterdon County, NJ, Mercer County, NJ, Middlesex County, NJ, Monmouth County, NJ, Morris County, NJ, Ocean County, NJ, Salem County, NJ, Somerset County, NJ, Union County, NJ, Warren County, NJ, Bronx County, NY, Kings County, NY, Nassau County, NY, New York County, NY, Queens County, NY, Richmond County, NY, Adams County, PA, Berks County, PA, Bucks County, PA, Carbon County, PA, Chester County, PA, Cumberland County, PA, Dauphin County, PA, Delaware County, PA, Franklin County, PA, Juniata County, PA, Lancaster County, PA, Lebanon County, PA, Lehigh County, PA, Montgomery County, PA, Northampton County, PA, Northumberland County, PA, Perry County, PA, Philadelphia County, PA, Schuylkill County, PA, Snyder County, PA, York County, PA, Albemarle County, VA, Arlington County, VA, Augusta County, VA, Bath County, VA, Caroline County, VA, City of Alexandria, VA, City of Charlottesville, VA, City of Fairfax, VA, City of Falls Church, VA, City of Fredericksburg, VA, City of Harrisonburg, VA, City of Manassas, VA, City of Manassas Park, VA, City of Staunton, VA, City of Waynesboro, VA, City of Winchester, VA, Clarke County, VA, Culpeper County, VA, Fairfax County, VA, Fauquier County, VA, Frederick County, VA, Greene County, VA, Highland County, VA, King George County, VA, Loudoun County, VA, Louisa County, VA, Madison County, VA, Orange County, VA, Page County, VA, Prince William County, VA, Rappahannock County, VA, Rockingham County, VA, Shenandoah County, VA, Spotsylvania County, VA, Stafford County, VA, Warren County, VA, Westmoreland County, VA, Berkeley County, WV, Hampshire County, WV, Hardy County, WV, Jefferson County, WV, Morgan County, WV
The radar
The Sterling radar (KLWX), 115 km from the middle of the area, began a volume at 17:51 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
45 tornado, severe thunderstorm and flash flood warnings for its counties while it was in force.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 27, 2:47 PM EDT | Severe Thunderstorm Warning | CTP | Juniata | 28 min |
| Jul 27, 2:52 PM EDT | Severe Thunderstorm Warning | CTP | Snyder | 39 min |
| Jul 27, 3:08 PM EDT | Severe Thunderstorm Warning | CTP | Northumberland | 44 min |
| Jul 27, 3:19 PM EDT | Severe Thunderstorm Warning | CTP | Schuylkill | 56 min |
| Jul 27, 3:53 PM EDT | Severe Thunderstorm Warning | LWX | Berkeley, Morgan | 52 min |
| Jul 27, 4:10 PM EDT | Severe Thunderstorm Warning | LWX | Shenandoah | 50 min |
| Jul 27, 4:12 PM EDT | Severe Thunderstorm Warning | PHI | Berks | 48 min |
| Jul 27, 4:19 PM EDT | Severe Thunderstorm Warning | LWX | Washington | 41 min |
| Jul 27, 4:30 PM EDT | Severe Thunderstorm Warning | PHI | Carbon, Lehigh, Northampton | 45 min |
| Jul 27, 4:33 PM EDT | Severe Thunderstorm Warning | RNK | Bath | 42 min |
| Jul 27, 4:35 PM EDT | Tornado Warning | LWX | Washington | 26 min |
| Jul 27, 4:43 PM EDT | Severe Thunderstorm Warning | LWX | Clarke, Frederick, Warren | 47 min |
| Jul 27, 4:49 PM EDT | Severe Thunderstorm Warning | LWX | Frederick | 41 min |
| Jul 27, 4:57 PM EDT | Severe Thunderstorm Warning | LWX | Augusta, Rockingham, City of Harrisonburg | 48 min |
| Jul 27, 4:58 PM EDT | Severe Thunderstorm Warning | PHI | Warren | 47 min |
| Jul 27, 5:08 PM EDT | Severe Thunderstorm Warning | LWX | Loudoun | 52 min |
| Jul 27, 5:16 PM EDT | Severe Thunderstorm Warning | PHI | Hunterdon, Morris | 44 min |
| Jul 27, 5:17 PM EDT | Severe Thunderstorm Warning | PHI | Berks | 43 min |
| Jul 27, 5:20 PM EDT | Severe Thunderstorm Warning | LWX | Fauquier, Loudoun | 40 min |
| Jul 27, 5:33 PM EDT | Severe Thunderstorm Warning | LWX | Frederick, Montgomery | 42 min |
| Jul 27, 5:36 PM EDT | Severe Thunderstorm Warning | CTP | Lancaster | 24 min |
| Jul 27, 5:47 PM EDT | Severe Thunderstorm Warning | PHI | Chester, Montgomery | 58 min |
| Jul 27, 5:50 PM EDT | Severe Thunderstorm Warning | LWX | Fauquier | 40 min |
| Jul 27, 5:56 PM EDT | Severe Thunderstorm Warning | LWX | Madison | 24 min |
| Jul 27, 5:57 PM EDT | Severe Thunderstorm Warning | LWX | Baltimore, City of Baltimore | 48 min |
| Jul 27, 6:02 PM EDT | Severe Thunderstorm Warning | LWX | Fairfax, City of Fairfax, City of Falls Church | 44 min |
| Jul 27, 6:12 PM EDT | Severe Thunderstorm Warning | LWX | Howard, Montgomery | 48 min |
| Jul 27, 6:13 PM EDT | Severe Thunderstorm Warning | PHI | Mercer, Somerset | 62 min |
| Jul 27, 6:14 PM EDT | Severe Thunderstorm Warning | OKX | Nassau | 46 min |
| Jul 27, 6:19 PM EDT | Severe Thunderstorm Warning | LWX | Prince George's | 41 min |
| Jul 27, 6:30 PM EDT | Severe Thunderstorm Warning | PHI | Philadelphia | 45 min |
| Jul 27, 6:34 PM EDT | Severe Thunderstorm Warning | PHI | Bucks | 56 min |
| Jul 27, 6:36 PM EDT | Severe Thunderstorm Warning | LWX | Culpeper, Madison, Orange | 39 min |
| Jul 27, 6:38 PM EDT | Severe Thunderstorm Warning | LWX | Anne Arundel, Baltimore, City of Baltimore | 52 min |
| Jul 27, 6:40 PM EDT | Severe Thunderstorm Warning | PHI | Montgomery | 35 min |
| Jul 27, 6:41 PM EDT | Severe Thunderstorm Warning | LWX | Harford | 49 min |
| Jul 27, 6:44 PM EDT | Severe Thunderstorm Warning | PHI | Burlington, Camden | 61 min |
| Jul 27, 6:50 PM EDT | Severe Thunderstorm Warning | PHI | Cecil | 40 min |
| Jul 27, 6:56 PM EDT | Severe Thunderstorm Warning | LWX | Fauquier, Stafford | 49 min |
| Jul 27, 7:04 PM EDT | Severe Thunderstorm Warning | PHI | New Castle | 41 min |
| Jul 27, 7:05 PM EDT | Severe Thunderstorm Warning | PHI | Monmouth | 40 min |
| Jul 27, 7:10 PM EDT | Severe Thunderstorm Warning | PHI | Kent, Queen Anne's | 65 min |
| Jul 27, 7:21 PM EDT | Severe Thunderstorm Warning | PHI | Caroline, Talbot | 54 min |
| Jul 27, 7:37 PM EDT | Severe Thunderstorm Warning | PHI | Kent, New Castle | 53 min |
| Jul 27, 8:18 PM EDT | Severe Thunderstorm Warning | PHI | Cumberland | 57 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
Phillips Aaf/Abe, MD (KAPG), launched 12:00Z, 5.8 hours before the alert went out and 54 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
- 1105 J/kg
- Mixed-layer CIN
- -73 J/kg
- Mixed-layer LCL
- 1506 m above ground
- 0-6 km bulk shear
- 18 kt
- 0-1 km storm-relative helicity
- 31 m²/s²
- 0-3 km storm-relative helicity
- 29 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 |
|---|---|---|---|---|
| Jul 27, 11:55 AM EDT | Mesoscale Discussion | SPC | Kent, New Castle | 2 hr |
| Jul 27, 3:35 PM EDT | Mesoscale Discussion | SPC | Kent, New Castle, Sussex | 115 min |
| Jul 27, 6:32 PM EDT | Mesoscale Discussion | SPC | Kent, New Castle, Sussex | 88 min |
| Jul 27, 1:10 PM EDT | Severe Thunderstorm Watch | SPC | Bergen, Passaic, Sussex | 7 hr |
| Jul 27, 5:42 PM EDT | Mesoscale Discussion | SPC | Bergen, Passaic, Sussex | 93 min |
| Jul 27, 3:08 PM EDT | Mesoscale Discussion | SPC | Albany, Columbia, Delaware, Dutchess, Greene, Orange and 10 more | 2 hr |
| Jul 27, 7:30 PM EDT | Mesoscale Discussion | SPC | Suffolk | 30 min |
| Jul 26, 10:02 PM EDT | Mesoscale Discussion | SPC | Allegheny, Armstrong, Beaver, Blair, Butler, Cambria and 17 more | 58 min |
Nearby
Severe Thunderstorm Watches in Virginia, 2005Severe Thunderstorm Watches in Maryland, 2005Severe Thunderstorm Watches in Pennsylvania, 2005Every severe thunderstorm watch in 2005
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.