Alert archive / Virginia / Severe Thunderstorm Watches in 2014
Severe Thunderstorm Watch 385
The Storm Prediction Center issued this severe thunderstorm watch at Jul 2, 2014, 12:42 PM EDT for 4 states. It was in force for 9 hr.
The area
The outline as issued.
The facts
- Issued
- Jul 2, 2014, 12:42 PM EDT (16:42 UTC)
- Expired
- Jul 2, 2014, 10:00 PM EDT
- In force
- 9 hr
- Issued by
- the Storm Prediction Center
- Largest hail expected
- 1 in
- Strongest gust expected
- 60 kt
All 105 counties
Allegany County, MD, Anne Arundel County, MD, Baltimore County, MD, Calvert County, MD, Carroll 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, Saint Mary's County, MD, Washington County, MD, Caswell County, NC, Rockingham County, NC, Stokes County, NC, Surry County, NC, Albemarle County, VA, Alleghany County, VA, Amelia 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, Caroline County, VA, Carroll County, VA, Charlotte County, VA, Chesterfield County, VA, City of Alexandria, 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 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 Radford, VA, City of Richmond, 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, Goochland County, VA, Greene County, VA, Halifax County, VA, Hanover County, VA, Henrico County, VA, Henry County, VA, Highland County, VA, King George 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, Powhatan 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, Spotsylvania County, VA, Stafford County, VA, Warren County, VA, Wythe County, VA, Berkeley County, WV, Grant County, WV, Hampshire County, WV, Hardy County, WV, Jefferson County, WV, Mineral County, WV, Morgan County, WV, Pendleton County, WV
The radar
The Sterling radar (KLWX), 127 km from the middle of the area, began a volume at 16:43 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.
What SPC expected
The probabilities SPC published with the watch, for the watch area over its life.
- Two or more tornadoes
- 10%
- One or more EF2 to EF5 tornadoes
- 2%
- Ten or more severe wind reports
- 70%
- One or more gusts of 65 knots or more
- 10%
- Ten or more severe hail reports
- 50%
- One or more hailstones of 2 inches or more
- 10%
- Six or more combined severe hail and wind reports
- 95%
Warnings issued inside it
27 tornado, severe thunderstorm and flash flood warnings for its counties while it was in force.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 2, 2:30 PM EDT | Severe Thunderstorm Warning | LWX | Frederick, Washington | 30 min |
| Jul 2, 2:45 PM EDT | Severe Thunderstorm Warning | LWX | Greene, Page, Rockingham, Shenandoah, City of Harrisonburg | 25 min |
| Jul 2, 2:56 PM EDT | Severe Thunderstorm Warning | LWX | Frederick, Montgomery, Washington | 34 min |
| Jul 2, 3:42 PM EDT | Severe Thunderstorm Warning | LWX | Montgomery | 29 min |
| Jul 2, 3:45 PM EDT | Severe Thunderstorm Warning | LWX | Rockingham | 45 min |
| Jul 2, 4:19 PM EDT | Severe Thunderstorm Warning | LWX | Calvert, Charles, Saint Mary's | 41 min |
| Jul 2, 4:20 PM EDT | Severe Thunderstorm Warning | LWX | Culpeper, Fauquier, Prince William, Rappahannock | 55 min |
| Jul 2, 4:52 PM EDT | Severe Thunderstorm Warning | LWX | Calvert, Saint Mary's | 55 min |
| Jul 2, 5:06 PM EDT | Severe Thunderstorm Warning | RNK | Alleghany, City of Covington | 39 min |
| Jul 2, 5:23 PM EDT | Severe Thunderstorm Warning | LWX | Harford | 52 min |
| Jul 2, 5:23 PM EDT | Severe Thunderstorm Warning | LWX | Hampshire | 52 min |
| Jul 2, 5:49 PM EDT | Severe Thunderstorm Warning | LWX | Grant, Hardy, Pendleton | 45 min |
| Jul 2, 5:55 PM EDT | Severe Thunderstorm Warning | RNK | Alleghany, Rockbridge | 50 min |
| Jul 2, 6:30 PM EDT | Severe Thunderstorm Warning | LWX | Rappahannock | 45 min |
| Jul 2, 6:34 PM EDT | Severe Thunderstorm Warning | RNK | Botetourt, Rockbridge, City of Buena Vista, City of Lexington | 56 min |
| Jul 2, 6:43 PM EDT | Severe Thunderstorm Warning | LWX | Augusta, City of Staunton, City of Waynesboro | 52 min |
| Jul 2, 7:01 PM EDT | Severe Thunderstorm Warning | LWX | Culpeper, Rappahannock | 44 min |
| Jul 2, 7:42 PM EDT | Severe Thunderstorm Warning | RNK | Stokes, Surry | 63 min |
| Jul 2, 7:47 PM EDT | Tornado Warning | LWX | Augusta, Rockingham | 28 min |
| Jul 2, 8:06 PM EDT | Flash Flood Warning | LWX | Greene, Madison, Page | 3 hr |
| Jul 2, 8:27 PM EDT | Severe Thunderstorm Warning | LWX | Albemarle, City of Charlottesville | 30 min |
| Jul 2, 8:28 PM EDT | Severe Thunderstorm Warning | RNK | Buckingham | 62 min |
| Jul 2, 8:32 PM EDT | Severe Thunderstorm Warning | AKQ | Fluvanna, Louisa | 43 min |
| Jul 2, 8:35 PM EDT | Severe Thunderstorm Warning | LWX | Greene, Madison, Orange | 40 min |
| Jul 2, 8:51 PM EDT | Severe Thunderstorm Warning | LWX | Culpeper, Madison, Orange | 39 min |
| Jul 2, 9:19 PM EDT | Severe Thunderstorm Warning | LWX | Orange, Spotsylvania | 41 min |
| Jul 2, 9:54 PM EDT | Severe Thunderstorm Warning | AKQ | Goochland, Louisa | 25 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
Washington/Dulle, VA (KIAD), launched 12:00Z, 4.7 hours before the alert went out and 132 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
- 672 J/kg
- Mixed-layer CIN
- -176 J/kg
- Mixed-layer LCL
- 1272 m above ground
- 0-6 km bulk shear
- 28 kt
- 0-1 km storm-relative helicity
- 4 m²/s²
- 0-3 km storm-relative helicity
- 87 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.2
SPC that day
Everything else SPC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 2, 12:05 PM EDT | Mesoscale Discussion | SPC | Anne Arundel, Baltimore, Calvert, Carroll, Charles, Frederick and 10 more | 55 min |
| Jul 2, 12:45 PM EDT | Mesoscale Discussion | SPC | Caroline, Cecil, Kent, Queen Anne's, Talbot | 60 min |
| Jul 2, 1:22 PM EDT | Severe Thunderstorm Watch | SPC | Caroline, Cecil, Kent, Queen Anne's, Talbot | 9 hr |
| Jul 2, 4:27 PM EDT | Mesoscale Discussion | SPC | Caroline, Cecil, Kent, Queen Anne's, Talbot | 93 min |
| Jul 2, 6:25 PM EDT | Mesoscale Discussion | SPC | Baltimore, Carroll, Frederick, Howard, Montgomery, Prince George's and 2 more | 95 min |
| Jul 1, 9:15 PM EDT | Mesoscale Discussion | SPC | Mason | 3 hr |
Nearby
Severe Thunderstorm Watches in Virginia, 2014Severe Thunderstorm Watches in Maryland, 2014Severe Thunderstorm Watches in West Virginia, 2014Every severe thunderstorm watch in 2014
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.