Alert archive / Virginia / Tornado Watches in 2013
Tornado Watch 131
The Storm Prediction Center issued this tornado watch at Apr 19, 2013, 2:31 PM EDT for 19 counties in Maryland; 78 counties in Virginia; 5 counties in West Virginia. It was in force for 7 hr.
The area
The outline as issued.
The facts
- Issued
- Apr 19, 2013, 2:31 PM EDT (18:31 UTC)
- Expired
- Apr 19, 2013, 10:00 PM EDT
- In force
- 7 hr
- Issued by
- the Storm Prediction Center
- Largest hail expected
- 1 in
- Strongest gust expected
- 60 kt
All 102 counties
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, Talbot County, MD, Washington County, MD, 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, Charles City County, VA, Charlotte County, VA, Chesterfield County, VA, City of Alexandria, VA, City of Charlottesville, VA, City of Colonial Heights, VA, City of Danville, VA, City of Emporia, VA, City of Fairfax, VA, City of Falls Church, VA, City of Fredericksburg, VA, City of Harrisonburg, VA, City of Hopewell, 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 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, Greensville County, VA, Halifax County, VA, Hanover County, VA, Henrico County, VA, Henry County, VA, King and Queen 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, New Kent 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 George County, VA, Prince William County, VA, Rappahannock County, VA, Richmond County, VA, Rockingham County, VA, Shenandoah County, VA, Spotsylvania County, VA, Stafford County, VA, Sussex 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), 154 km from the middle of the area, began a volume at 18:33 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
- 40%
- One or more EF2 to EF5 tornadoes
- 20%
- Ten or more severe wind reports
- 40%
- One or more gusts of 65 knots or more
- 10%
- Ten or more severe hail reports
- 20%
- One or more hailstones of 2 inches or more
- 5%
- Six or more combined severe hail and wind reports
- 60%
Warnings issued inside it
40 tornado, severe thunderstorm and flash flood warnings for its counties while it was in force.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Apr 19, 2:34 PM EDT | Severe Thunderstorm Warning | RNK | Carroll, Floyd, Patrick | 41 min |
| Apr 19, 3:15 PM EDT | Severe Thunderstorm Warning | RNK | Floyd, Franklin, Henry, Patrick | 60 min |
| Apr 19, 4:27 PM EDT | Severe Thunderstorm Warning | RNK | Amherst, Appomattox, Bedford, Campbell, Pittsylvania, City of Lynchburg | 63 min |
| Apr 19, 4:37 PM EDT | Tornado Warning | AKQ | Mecklenburg | 23 min |
| Apr 19, 4:38 PM EDT | Severe Thunderstorm Warning | LWX | Albemarle, Nelson | 37 min |
| Apr 19, 4:55 PM EDT | Severe Thunderstorm Warning | RNK | Amherst, Appomattox, Buckingham | 65 min |
| Apr 19, 4:57 PM EDT | Tornado Warning | AKQ | Mecklenburg | 33 min |
| Apr 19, 5:08 PM EDT | Severe Thunderstorm Warning | RNK | Charlotte, Halifax | 37 min |
| Apr 19, 5:23 PM EDT | Tornado Warning | AKQ | Brunswick, Dinwiddie, Lunenburg, Mecklenburg | 37 min |
| Apr 19, 5:23 PM EDT | Severe Thunderstorm Warning | LWX | Albemarle, Greene, Madison, Nelson, Orange, City of Charlottesville | 37 min |
| Apr 19, 5:25 PM EDT | Severe Thunderstorm Warning | AKQ | Cumberland, Fluvanna, Prince Edward | 35 min |
| Apr 19, 5:38 PM EDT | Severe Thunderstorm Warning | AKQ | Lunenburg, Mecklenburg, Prince Edward | 52 min |
| Apr 19, 5:54 PM EDT | Severe Thunderstorm Warning | AKQ | Amelia, Cumberland, Fluvanna, Goochland, Louisa, Powhatan | 51 min |
| Apr 19, 5:58 PM EDT | Severe Thunderstorm Warning | AKQ | Brunswick, Chesterfield, Dinwiddie, Prince George, City of Colonial Heights, City of Petersburg | 47 min |
| Apr 19, 6:01 PM EDT | Severe Thunderstorm Warning | LWX | Albemarle, Culpeper, Fauquier, Madison, Orange, Spotsylvania | 44 min |
| Apr 19, 6:05 PM EDT | Severe Thunderstorm Warning | AKQ | Amelia, Chesterfield, Dinwiddie, Lunenburg, Nottoway, Powhatan | 40 min |
| Apr 19, 6:09 PM EDT | Severe Thunderstorm Warning | AKQ | Brunswick, Dinwiddie, Nottoway | 36 min |
| Apr 19, 6:23 PM EDT | Severe Thunderstorm Warning | AKQ | Caroline, Goochland, Hanover, Henrico, King William, Louisa and 2 more | 52 min |
| Apr 19, 6:27 PM EDT | Severe Thunderstorm Warning | AKQ | Brunswick, Lunenburg, Mecklenburg, Nottoway | 33 min |
| Apr 19, 6:31 PM EDT | Severe Thunderstorm Warning | LWX | Charles | 44 min |
| Apr 19, 6:32 PM EDT | Severe Thunderstorm Warning | AKQ | Charles City, Chesterfield, Dinwiddie, Henrico, James City, New Kent and 4 more | 43 min |
| Apr 19, 6:36 PM EDT | Severe Thunderstorm Warning | AKQ | Chesterfield, Dinwiddie, Prince George, City of Colonial Heights, City of Hopewell, City of Petersburg | 39 min |
| Apr 19, 6:48 PM EDT | Severe Thunderstorm Warning | LWX | Charles, Montgomery, Prince George's | 42 min |
| Apr 19, 6:48 PM EDT | Severe Thunderstorm Warning | AKQ | Caroline, Essex, King and Queen, King William | 42 min |
| Apr 19, 6:57 PM EDT | Severe Thunderstorm Warning | AKQ | Amelia, Brunswick, Chesterfield, Dinwiddie, Greensville, Lunenburg and 2 more | 48 min |
| Apr 19, 7:00 PM EDT | Severe Thunderstorm Warning | LWX | Calvert, Charles, Prince George's, Saint Mary's | 45 min |
| Apr 19, 7:07 PM EDT | Tornado Warning | LWX | Charles, Prince George's | 23 min |
| Apr 19, 7:09 PM EDT | Severe Thunderstorm Warning | AKQ | Essex, King and Queen, King William, Richmond, Westmoreland | 51 min |
| Apr 19, 7:12 PM EDT | Severe Thunderstorm Warning | AKQ | Charles City, Chesterfield, Henrico, James City, King and Queen, King William and 3 more | 48 min |
| Apr 19, 7:18 PM EDT | Severe Thunderstorm Warning | LWX | Anne Arundel, Calvert, Charles, Prince George's | 42 min |
| Apr 19, 7:22 PM EDT | Severe Thunderstorm Warning | LWX | Calvert, Charles, Prince George's, Saint Mary's | 38 min |
| Apr 19, 7:29 PM EDT | Severe Thunderstorm Warning | PHI | Caroline, Kent, Queen Anne's, Talbot | 61 min |
| Apr 19, 7:31 PM EDT | Severe Thunderstorm Warning | AKQ | Chesterfield, Essex, Hanover, Henrico, King and Queen, King William and 5 more | 44 min |
| Apr 19, 7:37 PM EDT | Severe Thunderstorm Warning | AKQ | Brunswick, Charles City, Dinwiddie, Greensville, James City, Prince George and 5 more | 53 min |
| Apr 19, 7:44 PM EDT | Severe Thunderstorm Warning | LWX | Anne Arundel, Baltimore, City of Baltimore | 46 min |
| Apr 19, 7:54 PM EDT | Severe Thunderstorm Warning | AKQ | Essex, Gloucester, King and Queen, Lancaster, Middlesex, Northumberland and 1 more | 51 min |
| Apr 19, 7:59 PM EDT | Tornado Warning | AKQ | Greensville, Southampton, Sussex, City of Emporia | 31 min |
| Apr 19, 8:00 PM EDT | Severe Thunderstorm Warning | LWX | Calvert, Saint Mary's | 30 min |
| Apr 19, 8:08 PM EDT | Severe Thunderstorm Warning | PHI | Cecil | 52 min |
| Apr 19, 8:43 PM EDT | Severe Thunderstorm Warning | AKQ | Charles City, Isle of Wight, Southampton, Surry, Sussex, City of Chesapeake and 2 more | 47 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, 6.5 hours before the alert went out and 115 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
- 105 J/kg
- Mixed-layer CIN
- 0 J/kg
- Mixed-layer LCL
- 491 m above ground
- 0-6 km bulk shear
- 35 kt
- 0-1 km storm-relative helicity
- 250 m²/s²
- 0-3 km storm-relative helicity
- 333 m²/s²
- Significant tornado parameter
- 0.1
- Supercell composite
- 0.5
SPC that day
Everything else SPC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Apr 19, 1:27 PM EDT | Mesoscale Discussion | SPC | Anne Arundel, Baltimore, Calvert, Carroll, Cecil, Charles and 11 more | 63 min |
| Apr 19, 4:36 PM EDT | Mesoscale Discussion | SPC | Anne Arundel, Baltimore, Calvert, Carroll, Cecil, Charles and 9 more | 114 min |
| Apr 19, 6:27 PM EDT | Severe Thunderstorm Watch | SPC | Somerset, Wicomico, Worcester | 4 hr |
| Apr 19, 6:54 PM EDT | Mesoscale Discussion | SPC | Anne Arundel, Calvert, Caroline, Charles, Dorchester, Howard and 7 more | 66 min |
| Apr 19, 12:35 PM EDT | Mesoscale Discussion | SPC | Henry, City of Danville | 115 min |
Nearby
Tornado Watches in Virginia, 2013Tornado Watches in Maryland, 2013Tornado Watches in West Virginia, 2013Every tornado watch in 2013
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.