Alert archive / Virginia / Severe Thunderstorm Watches in 2015

Severe Thunderstorm Watch 418

July 13, 201520 counties in Virginia

The Storm Prediction Center issued this severe thunderstorm watch at Jul 13, 2015, 9:46 PM EDT for 20 counties in Virginia. It was in force for 3 hr.

The area

The outline as issued.

The facts

Issued
Jul 13, 2015, 9:46 PM EDT (01:46 UTC)
Expired
Jul 14, 2015, 12:22 AM EDT
In force
3 hr
Issued by
the Storm Prediction Center
Largest hail expected
1 in
Strongest gust expected
60 kt

Counties Amelia County, VA, Brunswick County, VA, Chesterfield County, VA, City of Colonial Heights, VA, City of Emporia, VA, City of Petersburg, VA, City of Richmond, VA, Cumberland County, VA, Dinwiddie County, VA, Fluvanna County, VA, Goochland County, VA, Greensville County, VA, Hanover County, VA, Henrico County, VA, Louisa County, VA, Lunenburg County, VA, Mecklenburg County, VA, Nottoway County, VA, Powhatan County, VA, Prince Edward County, VA

The radar

The Norfolk radar (KAKQ), 93 km from the middle of the area, began a volume at 01:48 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
5%
One or more EF2 to EF5 tornadoes
2%
Ten or more severe wind reports
20%
One or more gusts of 65 knots or more
10%
Ten or more severe hail reports
5%
One or more hailstones of 2 inches or more
5%
Six or more combined severe hail and wind reports
50%

Warnings issued inside it

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

IssuedProductOfficeCountiesLasted
Jul 13, 10:11 PM EDTSevere Thunderstorm WarningAKQLunenburg, Mecklenburg, Nottoway, Prince Edward64 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
Jul 13, 8:06 PM EDTMesoscale DiscussionSPCAlleghany, Amherst, Appomattox, Bath, Bedford, Botetourt and 20 more84 min
Jul 13, 10:34 PM EDTMesoscale DiscussionSPCAmelia, Appomattox, Brunswick, Buckingham, Charlotte, Cumberland and 7 more86 min
Jul 14, 5:10 PM EDTSevere Thunderstorm WatchSPCBuchanan, Dickenson6 hr
Jul 14, 6:10 PM EDTMesoscale DiscussionSPCAlbemarle, Alleghany, Amherst, Appomattox, Arlington, Augusta and 73 more2 hr
Jul 14, 6:44 PM EDTSevere Thunderstorm WatchSPCAlbemarle, Alleghany, Amherst, Appomattox, Arlington, Augusta and 72 more4 hr

Nearby

Severe Thunderstorm Watches in Virginia, 2015Every severe thunderstorm watch in 2015

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.