Alert archive / Virginia / Severe Thunderstorm Watches in 2013

Severe Thunderstorm Watch 490

August 10, 201344 counties in Virginia

The Storm Prediction Center issued this severe thunderstorm watch at Aug 10, 2013, 1:48 PM EDT for 44 counties in Virginia. It was in force for 5 hr.

The area

The outline as issued.

The facts

Issued
Aug 10, 2013, 1:48 PM EDT (17:48 UTC)
Expired
Aug 10, 2013, 6:24 PM EDT
In force
5 hr
Issued by
the Storm Prediction Center
Largest hail expected
1.5 in
Strongest gust expected
60 kt
All 44 counties

Amelia County, VA, Brunswick County, VA, Charles City County, VA, Chesterfield County, VA, City of Chesapeake, VA, City of Colonial Heights, VA, City of Emporia, VA, City of Franklin, VA, City of Hampton, VA, City of Hopewell, VA, City of Newport News, VA, City of Norfolk, VA, City of Petersburg, VA, City of Poquoson, VA, City of Portsmouth, VA, City of Richmond, VA, City of Suffolk, VA, City of Virginia Beach, VA, City of Williamsburg, VA, Cumberland County, VA, Dinwiddie County, VA, Gloucester County, VA, Goochland County, VA, Greensville County, VA, Hanover County, VA, Henrico County, VA, Isle of Wight County, VA, James City County, VA, King and Queen County, VA, King William County, VA, Lunenburg County, VA, Mathews County, VA, Mecklenburg County, VA, Middlesex County, VA, New Kent County, VA, Northampton County, VA, Nottoway County, VA, Powhatan County, VA, Prince Edward County, VA, Prince George County, VA, Southampton County, VA, Surry County, VA, Sussex County, VA, York County, VA

The radar

The Norfolk radar (KAKQ), 18 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.

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
5%
Ten or more severe wind reports
60%
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
80%

Warnings issued inside it

7 tornado, severe thunderstorm and flash flood warnings for its counties while it was in force.

IssuedProductOfficeCountiesLasted
Aug 10, 1:59 PM EDTSevere Thunderstorm WarningAKQCharles City, Hanover, Henrico, King William, New Kent, City of Richmond46 min
Aug 10, 2:32 PM EDTSevere Thunderstorm WarningAKQCharles City, Gloucester, James City, King and Queen, King William, New Kent and 1 more43 min
Aug 10, 2:53 PM EDTSevere Thunderstorm WarningAKQIsle of Wight, Surry, City of Newport News37 min
Aug 10, 3:03 PM EDTSevere Thunderstorm WarningAKQGloucester, James City, Mathews, York, City of Newport News, City of Williamsburg42 min
Aug 10, 3:23 PM EDTSevere Thunderstorm WarningAKQIsle of Wight, York, City of Hampton, City of Newport News, City of Norfolk, City of Poquoson and 1 more37 min
Aug 10, 3:44 PM EDTSevere Thunderstorm WarningAKQCity of Chesapeake, City of Norfolk, City of Portsmouth, City of Virginia Beach46 min
Aug 10, 4:43 PM EDTSevere Thunderstorm WarningAKQCity of Virginia Beach17 min

Discussions around it

SPC mesoscale discussions over the same counties from four hours before the watch to its end.

SPC that day

Everything else SPC issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Aug 10, 11:56 AM EDTMesoscale DiscussionSPCAccomack, Albemarle, Amelia, Amherst, Appomattox, Bedford and 66 more94 min
Aug 10, 1:22 PM EDTMesoscale DiscussionSPCAmelia, Appomattox, Brunswick, Buckingham, Campbell, Charles City and 47 more53 min
Aug 10, 4:17 PM EDTMesoscale DiscussionSPCAmelia, Brunswick, Charles City, Chesterfield, Cumberland, Dinwiddie and 36 more58 min

Nearby

Severe Thunderstorm Watches in Virginia, 2013Every severe thunderstorm 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; radar from the NEXRAD Level II archive.