Weather alerts in Surry County, Virginia, 2011

185 weather alerts in 2011, from the National Weather Service and the Storm Prediction Center. An alert counts here when it covered this county.

Surry County and its neighbors

Each county as a circle sized by its count in 2011. Tap one for its archive.

Alerts: 185
Warnings: 37
Watches: 26
Advisories: 20
Busiest month: July32 alerts
Busiest day: April 16, 201110 alerts

Over time

By month

Warning verification

How often warnings here had a storm report inside them, and how much warning the reports had.

1 of 2 tornado warnings covering Surry County in 2011 had a tornado report inside them.

Surry County, 2011

	Warnings	With a report	False alarm ratio	Reports	Inside a warning	Mean lead time
Tornado warnings	2	1	50%	0
Severe thunderstorm warnings	27	12	56%	3	100%	17 min
Flash flood warnings	3	3	0%	2	100%	103 min

Each office's whole area, 2011

	Warnings	With a report	False alarm ratio	Reports	Inside a warning	Mean lead time
NWS Wakefield, VA: tornado warnings	84	23	73%	43	77%	14 min
NWS Wakefield, VA: severe thunderstorm warnings	241	150	38%	386	79%	19 min
NWS Wakefield, VA: flash flood warnings	11	8	27%	35	86%	70 min

An office's figures cover every county it serves, including across state lines.

Verified by the Iowa Environmental Mesonet's Cow, which matches each storm-based warning with the local storm reports inside its polygon while it was in force, within 15 km of its edge: a tornado warning counts as verified on a tornado report, a severe thunderstorm warning on hail of 1 inch or more, a gust of 58 mph or more, or wind damage, a flash flood warning on a flash flood report. The false alarm ratio is the share of warnings with no such report; "inside a warning" is the probability of detection, the share of reports that fell inside one; lead time runs from the warning's issue to each report inside it, counting zero for a report that came first. A warning with no report is not proof nothing happened: reports come from spotters, the public and damage surveys, and are thin where few people live.

The alerts

Every alert, in the order issued. Times are local, Eastern Time. Each opens its own page with the text, the map, the radar and the sounding.

Issued	Product	Office	Lasted
Jan 10, 5:42 AM EST	Winter Weather Advisory	AKQ	37 hr
Jan 26, 1:35 PM EST	Special Weather Statement	AKQ	55 min
Jan 29, 3:42 AM EST	Dense Fog Advisory	AKQ	5 hr
Feb 13, 3:04 PM EST	Fire Weather Watch	AKQ	13 hr
Feb 14, 4:30 AM EST	Red Flag Warning	AKQ	15 hr
Feb 18, 3:44 AM EST	Fire Weather Watch	AKQ	11 hr
Feb 18, 2:57 PM EST	Red Flag Warning	AKQ	30 hr
Feb 24, 3:40 PM EST	Wind Advisory	AKQ	32 hr
Feb 25, 9:23 AM EST	Special Weather Statement	AKQ	52 min
Feb 25, 9:24 AM EST	Special Weather Statement	AKQ	51 min
Mar 6, 12:06 PM EST	Mesoscale Discussion	SPC	84 min
Mar 6, 2:37 PM EST	Special Weather Statement	AKQ	68 min
Mar 6, 3:24 PM EST	Special Weather Statement	AKQ	66 min
Mar 6, 6:24 PM EST	Tornado Watch	SPC	4 hr
Mar 6, 8:04 PM EST	Mesoscale Discussion	SPC	56 min
Mar 10, 1:25 PM EST	Severe Thunderstorm Watch	SPC	7 hr
Mar 10, 1:53 PM EST	Special Weather Statement	AKQ	52 min
Mar 10, 6:10 PM EST	Severe Thunderstorm Warning	AKQ	50 min
Mar 19, 12:39 AM EDT	Special Weather Statement	AKQ	66 min
Mar 21, 7:47 AM EDT	Special Weather Statement	AKQ	58 min
Mar 21, 9:18 PM EDT	Special Weather Statement	AKQ	57 min
Mar 21, 9:20 PM EDT	Special Weather Statement	AKQ	55 min
Mar 23, 6:04 PM EDT	Severe Thunderstorm Watch	SPC	7 hr
Mar 23, 7:52 PM EDT	Special Weather Statement	AKQ	38 min
Mar 23, 8:36 PM EDT	Special Weather Statement	AKQ	54 min
Mar 23, 10:26 PM EDT	Mesoscale Discussion	SPC	64 min
Mar 24, 11:43 AM EDT	Special Weather Statement	AKQ	62 min
Apr 2, 4:17 PM EDT	Special Weather Statement	AKQ	58 min
Apr 5, 2:13 AM EDT	Mesoscale Discussion	SPC	32 min
Apr 5, 2:18 AM EDT	Tornado Watch	SPC	8 hr
Apr 5, 3:34 AM EDT	Mesoscale Discussion	SPC	116 min
Apr 5, 5:23 AM EDT	Severe Thunderstorm Warning	AKQ	37 min
Apr 5, 10:00 AM EDT	Special Weather Statement	AKQ	60 min
Apr 5, 10:15 AM EDT	Mesoscale Discussion	SPC	90 min
Apr 5, 10:19 AM EDT	Severe Thunderstorm Warning	AKQ	56 min
Apr 8, 8:01 PM EDT	Special Weather Statement	AKQ	59 min
Apr 12, 1:56 PM EDT	Mesoscale Discussion	SPC	64 min
Apr 16, 10:39 AM EDT	Mesoscale Discussion	SPC	2 hr
Apr 16, 12:02 PM EDT	Tornado Watch PDS	SPC	11 hr
Apr 16, 2:28 PM EDT	Mesoscale Discussion	SPC	92 min
Apr 16, 4:49 PM EDT	Mesoscale Discussion	SPC	86 min
Apr 16, 5:43 PM EDT	Severe Thunderstorm Warning	AKQ	47 min
Apr 16, 6:09 PM EDT	Severe Thunderstorm Warning	AKQ	37 min
Apr 16, 6:11 PM EDT	Tornado Warning	AKQ	34 min
Apr 16, 6:39 PM EDT	Severe Thunderstorm Warning	AKQ	36 min
Apr 16, 6:54 PM EDT	Tornado Warning	AKQ	24 min
Apr 16, 6:59 PM EDT	Mesoscale Discussion	SPC	91 min
Apr 26, 2:16 PM EDT	Mesoscale Discussion	SPC	59 min
Apr 27, 12:51 PM EDT	Mesoscale Discussion	SPC	84 min
Apr 27, 3:11 PM EDT	Special Weather Statement	AKQ	49 min
Apr 27, 3:29 PM EDT	Special Weather Statement	AKQ	46 min
Apr 28, 7:38 AM EDT	Tornado Watch	SPC	7 hr
Apr 28, 10:44 AM EDT	Mesoscale Discussion	SPC	61 min
Apr 28, 2:00 PM EDT	Mesoscale Discussion	SPC	60 min
Apr 28, 2:41 PM EDT	Tornado Watch	SPC	6 hr
Apr 28, 6:33 PM EDT	Mesoscale Discussion	SPC	57 min
Apr 28, 7:20 PM EDT	Severe Thunderstorm Warning	AKQ	55 min
Apr 28, 8:27 PM EDT	Mesoscale Discussion	SPC	33 min
May 4, 7:35 AM EDT	Special Weather Statement	AKQ	55 min
May 14, 1:44 PM EDT	Severe Thunderstorm Watch	SPC	8 hr
May 14, 7:04 PM EDT	Severe Thunderstorm Warning	AKQ	34 min
May 14, 7:32 PM EDT	Mesoscale Discussion	SPC	58 min
May 14, 7:36 PM EDT	Special Weather Statement	AKQ	54 min
May 14, 7:53 PM EDT	Severe Thunderstorm Warning	AKQ	40 min
May 15, 1:38 PM EDT	Mesoscale Discussion	SPC	2 hr
May 15, 10:32 PM EDT	Special Weather Statement	AKQ	28 min
May 17, 11:14 AM EDT	Mesoscale Discussion	SPC	2 hr
May 17, 12:45 PM EDT	Special Weather Statement	AKQ	45 min
May 18, 3:21 PM EDT	Severe Thunderstorm Warning	AKQ	39 min
May 23, 3:16 PM EDT	Severe Thunderstorm Watch	SPC	7 hr
May 23, 6:39 PM EDT	Severe Thunderstorm Warning	AKQ	21 min
May 23, 7:02 PM EDT	Mesoscale Discussion	SPC	58 min
May 24, 12:15 PM EDT	Mesoscale Discussion	SPC	90 min
May 24, 12:42 PM EDT	Severe Thunderstorm Watch	SPC	5 hr
May 24, 3:29 PM EDT	Special Weather Statement	AKQ	46 min
May 24, 3:51 PM EDT	Severe Thunderstorm Warning	AKQ	54 min
May 24, 8:40 PM EDT	Mesoscale Discussion	SPC	65 min
May 24, 9:48 PM EDT	Special Weather Statement	AKQ	27 min
May 24, 11:03 PM EDT	Severe Thunderstorm Warning	AKQ	27 min
May 27, 12:06 PM EDT	Severe Thunderstorm Watch	SPC	7 hr
May 27, 3:29 PM EDT	Mesoscale Discussion	SPC	91 min
Jun 10, 1:39 PM EDT	Mesoscale Discussion	SPC	96 min
Jun 10, 4:15 PM EDT	Special Weather Statement	AKQ	60 min
Jun 10, 4:16 PM EDT	Special Weather Statement	AKQ	59 min
Jun 11, 7:33 PM EDT	Severe Thunderstorm Warning	AKQ	42 min
Jun 12, 1:48 PM EDT	Severe Thunderstorm Watch	SPC	6 hr
Jun 16, 6:01 PM EDT	Mesoscale Discussion	SPC	89 min
Jun 16, 9:51 PM EDT	Special Weather Statement	AKQ	54 min
Jun 23, 1:40 PM EDT	Mesoscale Discussion	SPC	3 hr
Jun 24, 1:05 PM EDT	Mesoscale Discussion	SPC	2 hr
Jun 24, 4:13 PM EDT	Mesoscale Discussion	SPC	92 min
Jun 28, 2:43 PM EDT	Special Weather Statement	AKQ	32 min
Jun 28, 2:44 PM EDT	Mesoscale Discussion	SPC	91 min
Jun 28, 3:12 PM EDT	Severe Thunderstorm Warning	AKQ	33 min
Jun 28, 3:35 PM EDT	Severe Thunderstorm Warning	AKQ	40 min
Jun 28, 9:03 PM EDT	Severe Thunderstorm Warning	AKQ	42 min
Jul 4, 2:34 PM EDT	Severe Thunderstorm Watch	SPC	6 hr
Jul 4, 3:59 PM EDT	Special Weather Statement	AKQ	46 min
Jul 4, 6:17 PM EDT	Special Weather Statement	AKQ	43 min
Jul 4, 6:24 PM EDT	Severe Thunderstorm Warning	AKQ	51 min
Jul 4, 6:44 PM EDT	Mesoscale Discussion	SPC	61 min
Jul 4, 7:19 PM EDT	Special Weather Statement	AKQ	56 min
Jul 6, 3:28 PM EDT	Severe Thunderstorm Warning	AKQ	47 min
Jul 6, 4:17 PM EDT	Special Weather Statement	AKQ	43 min
Jul 6, 4:34 PM EDT	Severe Thunderstorm Warning	AKQ	40 min
Jul 8, 7:54 AM EDT	Special Weather Statement	AKQ	21 min
Jul 8, 8:16 AM EDT	Areal Flood Advisory	AKQ	59 min
Jul 8, 9:28 AM EDT	Areal Flood Advisory	AKQ	62 min
Jul 8, 2:36 PM EDT	Areal Flood Advisory	AKQ	84 min
Jul 8, 9:29 PM EDT	Special Weather Statement	AKQ	61 min
Jul 8, 11:38 PM EDT	Areal Flood Advisory	AKQ	112 min
Jul 11, 3:35 PM EDT	Heat Advisory	AKQ	28 hr
Jul 13, 4:30 PM EDT	Mesoscale Discussion	SPC	90 min
Jul 13, 7:03 PM EDT	Special Weather Statement	AKQ	42 min
Jul 13, 7:36 PM EDT	Mesoscale Discussion	SPC	54 min
Jul 13, 7:43 PM EDT	Special Weather Statement	AKQ	52 min
Jul 20, 3:23 AM EDT	Excessive Heat Watch	AKQ	24 hr
Jul 20, 4:26 PM EDT	Excessive Heat Warning	AKQ	3 days
Jul 23, 3:44 PM EDT	Heat Advisory	AKQ	28 hr
Jul 23, 6:17 PM EDT	Mesoscale Discussion	SPC	88 min
Jul 24, 6:34 PM EDT	Mesoscale Discussion	SPC	116 min
Jul 24, 9:52 PM EDT	Special Weather Statement	AKQ	53 min
Jul 24, 9:58 PM EDT	Severe Thunderstorm Warning	AKQ	47 min
Jul 25, 7:11 PM EDT	Severe Thunderstorm Warning	AKQ	49 min
Jul 25, 7:21 PM EDT	Severe Thunderstorm Warning	AKQ	39 min
Jul 25, 7:23 PM EDT	Mesoscale Discussion	SPC	67 min
Jul 25, 7:58 PM EDT	Severe Thunderstorm Warning	AKQ	62 min
Jul 28, 2:00 PM EDT	Heat Advisory	AKQ	30 hr
Aug 1, 11:21 PM EDT	Severe Thunderstorm Warning	AKQ	24 min
Aug 3, 1:03 PM EDT	Mesoscale Discussion	SPC	87 min
Aug 7, 11:40 AM EDT	Heat Advisory	AKQ	7 hr
Aug 13, 1:33 PM EDT	Mesoscale Discussion	SPC	117 min
Aug 14, 6:37 PM EDT	Mesoscale Discussion	SPC	53 min
Aug 15, 4:10 PM EDT	Special Weather Statement	AKQ	65 min
Aug 19, 3:13 PM EDT	Mesoscale Discussion	SPC	62 min
Aug 21, 1:45 PM EDT	Mesoscale Discussion	SPC	90 min
Aug 21, 2:06 PM EDT	Severe Thunderstorm Watch	SPC	7 hr
Aug 21, 5:28 PM EDT	Special Weather Statement	AKQ	62 min
Aug 21, 6:42 PM EDT	Mesoscale Discussion	SPC	63 min
Aug 25, 3:23 PM EDT	Severe Thunderstorm Watch	SPC	5 hr
Aug 25, 5:48 PM EDT	Tropical Storm Watch	AKQ	12 hr
Aug 25, 6:24 PM EDT	Mesoscale Discussion	SPC	96 min
Aug 25, 6:36 PM EDT	Severe Thunderstorm Warning	AKQ	24 min
Aug 25, 8:01 PM EDT	Flash Flood Watch	AKQ	4 hr
Aug 25, 11:51 PM EDT	Flood Watch	AKQ	52 hr
Aug 26, 5:27 AM EDT	Tropical Storm Warning	AKQ	57 hr
Aug 26, 11:06 PM EDT	Mesoscale Discussion	SPC	84 min
Aug 27, 12:32 AM EDT	Tornado Watch	SPC	10 hr
Aug 27, 10:41 AM EDT	Tornado Watch	SPC	9 hr
Aug 27, 12:52 PM EDT	Areal Flood Warning	AKQ	15 hr
Aug 27, 1:01 PM EDT	Mesoscale Discussion	SPC	119 min
Sep 6, 1:32 PM EDT	Tornado Watch	SPC	7 hr
Sep 6, 2:31 PM EDT	Special Weather Statement	AKQ	44 min
Sep 6, 4:41 PM EDT	Mesoscale Discussion	SPC	64 min
Sep 6, 6:19 PM EDT	Special Weather Statement	AKQ	56 min
Sep 6, 7:12 PM EDT	Special Weather Statement	AKQ	48 min
Sep 7, 10:47 AM EDT	Areal Flood Advisory	AKQ	103 min
Sep 7, 4:10 PM EDT	Mesoscale Discussion	SPC	65 min
Sep 7, 9:59 PM EDT	Flash Flood Warning	AKQ	2 hr
Sep 8, 12:00 AM EDT	Flash Flood Warning	AKQ	91 min
Sep 8, 3:33 PM EDT	Special Weather Statement	AKQ	57 min
Sep 8, 9:52 PM EDT	Flash Flood Warning	AKQ	53 min
Sep 9, 5:14 PM EDT	Areal Flood Advisory	AKQ	4 hr
Sep 15, 6:35 PM EDT	Areal Flood Advisory	AKQ	2 hr
Sep 22, 2:57 PM EDT	Flash Flood Watch	AKQ	29 hr
Sep 23, 2:17 PM EDT	Areal Flood Advisory	AKQ	103 min
Sep 23, 3:59 PM EDT	Areal Flood Advisory	AKQ	2 hr
Sep 27, 9:26 PM EDT	Special Weather Statement	AKQ	59 min
Sep 30, 1:39 PM EDT	Mesoscale Discussion	SPC	3 hr
Sep 30, 5:31 PM EDT	Special Weather Statement	AKQ	44 min
Oct 19, 6:26 PM EDT	Mesoscale Discussion	SPC	2 hr
Nov 9, 3:15 AM EST	Dense Fog Advisory	AKQ	7 hr
Nov 9, 10:29 PM EST	Dense Fog Advisory	AKQ	11 hr
Nov 16, 4:45 PM EST	Mesoscale Discussion	SPC	90 min
Nov 16, 5:26 PM EST	Severe Thunderstorm Warning	AKQ	34 min
Nov 16, 7:23 PM EST	Mesoscale Discussion	SPC	67 min
Nov 16, 9:20 PM EST	Special Weather Statement	AKQ	55 min
Nov 23, 5:41 AM EST	Special Weather Statement	AKQ	49 min
Dec 5, 2:21 AM EST	Dense Fog Advisory	AKQ	7 hr
Dec 7, 4:56 PM EST	Mesoscale Discussion	SPC	94 min
Dec 7, 5:42 PM EST	Mesoscale Discussion	SPC	33 min
Dec 7, 5:56 PM EST	Severe Thunderstorm Watch	SPC	4 hr
Dec 7, 7:09 PM EST	Areal Flood Advisory	AKQ	51 min
Dec 7, 7:35 PM EST	Special Weather Statement	AKQ	25 min
Dec 27, 2:16 PM EST	Special Weather Statement	AKQ	29 min

By product

Every kind of product issued here, grouped by hazard. Each opens the same place narrowed to that product.

Product	Alerts
Severe storms
Severe Thunderstorm Warning	27
Tornado Warning	2
Severe Thunderstorm Watch	11
Tornado Watch	8
Mesoscale Discussion	53
Special Weather Statement	49
Flooding
Areal Flood Warning	1
Flash Flood Warning	3
Flash Flood Watch	2
Flood Watch	1
Areal Flood Advisory	10
Winter
Winter Weather Advisory	1
Heat
Excessive Heat Warning	1
Excessive Heat Watch	1
Heat Advisory	4
Wind and dust
Wind Advisory	1
Fire
Red Flag Warning	2
Fire Weather Watch	2
Fog and smoke
Dense Fog Advisory	4
Tropical
Tropical Storm Warning	1
Tropical Storm Watch	1

The busiest days

Days with the most alerts issued, by UTC date.

Nearby

Alerts in force now Tornadoes on record Forecast The radar archive 2010 2012

Sources

National Weather Service watches, warnings, advisories and statements from the Iowa Environmental Mesonet's VTEC archive, which reconstructs tornado, severe thunderstorm, flash flood and marine warnings back to 1986 from the NWS text archive. Storm Prediction Center watches and mesoscale discussions from SPC's archive through the Mesonet. County centers from the US Census Bureau. Warning verification from the Mesonet's Cow. Rebuilt daily.