Alert archive / Virginia / King George County

Weather alerts in King George County, Virginia, 2020

114 weather alerts in 2020, from the National Weather Service and the Storm Prediction Center. An alert counts here when it covered this county.

King George County and its neighbors

Each county as a circle sized by its count in 2020. Tap one for its archive.

Alerts
114
Warnings
27
Watches
22
Advisories
31
Busiest month
August31 alerts
Busiest day
August 6, 20206 alerts

Over time

By month

Warning verification

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

0 of 1 tornado warnings covering King George County in 2020 had a tornado report inside them.

King George County, 2020

WarningsWith a reportFalse alarm ratioReportsInside a warningMean lead time
Tornado warnings10100%0
Severe thunderstorm warnings191616%2365%18 min
Flash flood warnings00

Each office's whole area, 2020

WarningsWith a reportFalse alarm ratioReportsInside a warningMean lead time
NWS Baltimore/Washington: tornado warnings27678%1547%9 min
NWS Baltimore/Washington: severe thunderstorm warnings45631431%1,04779%23 min
NWS Baltimore/Washington: flash flood warnings663448%13090%72 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.

IssuedProductOfficeLasted
Feb 5, 3:23 PM ESTFlood WatchLWX35 hr
Feb 6, 9:30 PM ESTWind AdvisoryLWX20 hr
Mar 27, 3:31 AM EDTCoastal Flood AdvisoryLWX10 hr
Mar 31, 8:58 PM EDTCoastal Flood AdvisoryLWX19 hr
Apr 4, 4:57 PM EDTCoastal Flood AdvisoryLWX52 hr
Apr 7, 2:57 PM EDTMesoscale DiscussionSPC93 min
Apr 7, 3:29 PM EDTSevere Thunderstorm WarningLWX46 min
Apr 12, 12:35 PM EDTHigh Wind WarningLWX26 hr
Apr 12, 12:35 PM EDTWind AdvisoryLWX29 hr
Apr 13, 7:37 AM EDTSevere Thunderstorm WarningLWX21 min
Apr 13, 10:34 AM EDTMesoscale DiscussionSPC86 min
Apr 13, 11:33 AM EDTTornado WatchSPC5 hr
Apr 13, 1:20 PM EDTMesoscale DiscussionSPC85 min
Apr 16, 1:19 PM EDTFreeze WarningLWX20 hr
Apr 18, 1:19 PM EDTFrost AdvisoryLWX20 hr
Apr 21, 4:04 AM EDTFreeze WarningLWX27 hr
Apr 21, 12:23 PM EDTMesoscale DiscussionSPC2 hr
Apr 29, 4:24 AM EDTFlood WatchLWX39 hr
Apr 30, 4:55 AM EDTCoastal Flood AdvisoryLWX23 hr
May 3, 11:17 PM EDTSevere Thunderstorm WarningLWX43 min
May 9, 3:36 AM EDTFrost AdvisoryLWX28 hr
May 19, 2:58 PM EDTCoastal Flood AdvisoryLWX42 hr
May 25, 2:47 AM EDTCoastal Flood AdvisoryLWX9 hr
Jun 4, 2:02 PM EDTMesoscale DiscussionSPC118 min
Jun 5, 3:40 AM EDTFlash Flood WatchLWX17 hr
Jun 5, 1:15 PM EDTMesoscale DiscussionSPC2 hr
Jun 16, 2:05 PM EDTCoastal Flood AdvisoryLWX17 hr
Jun 22, 1:58 PM EDTMesoscale DiscussionSPC3 hr
Jun 22, 3:22 PM EDTSevere Thunderstorm WarningLWX38 min
Jun 22, 3:53 PM EDTSevere Thunderstorm WarningLWX37 min
Jun 25, 1:48 PM EDTMesoscale DiscussionSPC117 min
Jun 25, 6:09 PM EDTMesoscale DiscussionSPC96 min
Jul 1, 1:46 PM EDTMesoscale DiscussionSPC119 min
Jul 5, 1:50 PM EDTMesoscale DiscussionSPC115 min
Jul 6, 12:33 PM EDTMesoscale DiscussionSPC3 hr
Jul 6, 1:38 PM EDTSevere Thunderstorm WatchSPC9 hr
Jul 6, 4:33 PM EDTMesoscale DiscussionSPC117 min
Jul 6, 6:25 PM EDTMesoscale DiscussionSPC2 hr
Jul 17, 1:47 PM EDTMesoscale DiscussionSPC118 min
Jul 18, 2:59 PM EDTHeat AdvisoryLWX29 hr
Jul 19, 2:47 PM EDTExcessive Heat WatchLWX5 hr
Jul 19, 2:47 PM EDTHeat AdvisoryLWX29 hr
Jul 20, 8:06 PM EDTHeat AdvisoryLWX24 hr
Jul 21, 7:20 PM EDTSevere Thunderstorm WarningLWX40 min
Jul 21, 7:44 PM EDTSevere Thunderstorm WarningLWX61 min
Jul 22, 12:07 AM EDTHeat AdvisoryLWX18 hr
Jul 22, 10:48 AM EDTMesoscale DiscussionSPC117 min
Jul 22, 12:01 PM EDTSevere Thunderstorm WatchSPC7 hr
Jul 22, 3:18 PM EDTMesoscale DiscussionSPC87 min
Jul 22, 4:05 PM EDTSevere Thunderstorm WarningLWX40 min
Jul 23, 2:43 AM EDTHeat AdvisoryLWX16 hr
Jul 24, 4:22 PM EDTMesoscale DiscussionSPC83 min
Jul 27, 7:31 PM EDTHeat AdvisoryLWX23 hr
Jul 28, 3:19 PM EDTMesoscale DiscussionSPC116 min
Jul 30, 5:08 PM EDTSevere Thunderstorm WarningLWX38 min
Jul 30, 6:43 PM EDTSevere Thunderstorm WarningLWX47 min
Jul 30, 7:14 PM EDTSevere Thunderstorm WarningLWX46 min
Jul 31, 1:04 PM EDTMesoscale DiscussionSPC116 min
Aug 1, 4:00 PM EDTMesoscale DiscussionSPC2 hr
Aug 1, 7:05 PM EDTMesoscale DiscussionSPC115 min
Aug 2, 2:18 PM EDTMesoscale DiscussionSPC57 min
Aug 2, 3:28 PM EDTFlash Flood WatchLWX45 hr
Aug 2, 4:56 PM EDTTropical Storm WatchLWX18 hr
Aug 2, 5:19 PM EDTCoastal Flood WatchLWX24 hr
Aug 3, 5:29 AM EDTTropical Storm WarningLWX36 hr
Aug 3, 2:55 PM EDTSevere Thunderstorm WarningLWX65 min
Aug 3, 3:24 PM EDTTornado WarningLWX21 min
Aug 3, 5:15 PM EDTCoastal Flood AdvisoryLWX29 hr
Aug 4, 1:41 AM EDTMesoscale DiscussionSPC3 hr
Aug 5, 10:51 PM EDTFlash Flood WatchLWX25 hr
Aug 6, 2:08 PM EDTMesoscale DiscussionSPC3 hr
Aug 6, 6:01 PM EDTMesoscale DiscussionSPC119 min
Aug 6, 7:09 PM EDTAreal Flood WarningLWX5 hr
Aug 6, 7:15 PM EDTSevere Thunderstorm WarningLWX45 min
Aug 6, 7:31 PM EDTSevere Thunderstorm WarningLWX30 min
Aug 7, 3:46 AM EDTFlash Flood WatchLWX21 hr
Aug 11, 3:19 PM EDTFlash Flood WatchLWX52 hr
Aug 12, 1:15 PM EDTMesoscale DiscussionSPC2 hr
Aug 15, 2:02 PM EDTCoastal Flood AdvisoryLWX18 hr
Aug 17, 12:02 PM EDTCoastal Flood AdvisoryLWX24 hr
Aug 24, 4:44 PM EDTSevere Thunderstorm WarningLWX46 min
Aug 24, 4:46 PM EDTSevere Thunderstorm WarningLWX30 min
Aug 24, 5:14 PM EDTSevere Thunderstorm WarningLWX46 min
Aug 25, 3:34 PM EDTSevere Thunderstorm WatchSPC7 hr
Aug 25, 7:07 PM EDTMesoscale DiscussionSPC113 min
Aug 25, 7:36 PM EDTSevere Thunderstorm WarningLWX39 min
Aug 25, 8:50 PM EDTMesoscale DiscussionSPC115 min
Aug 28, 7:50 PM EDTMesoscale DiscussionSPC2 hr
Aug 29, 12:08 PM EDTMesoscale DiscussionSPC3 hr
Sep 2, 3:37 PM EDTMesoscale DiscussionSPC53 min
Sep 2, 6:43 PM EDTSevere Thunderstorm WatchSPC5 hr
Sep 3, 3:06 PM EDTMesoscale DiscussionSPC114 min
Sep 3, 3:42 PM EDTTornado WatchSPC6 hr
Sep 9, 2:15 PM EDTFlash Flood WatchLWX30 hr
Sep 12, 6:37 PM EDTCoastal Flood AdvisoryLWX12 hr
Sep 21, 1:28 PM EDTCoastal Flood AdvisoryLWX20 hr
Oct 12, 7:52 PM EDTCoastal Flood AdvisoryLWX9 hr
Oct 21, 1:51 AM EDTDense Fog AdvisoryLWX9 hr
Oct 22, 1:01 AM EDTDense Fog AdvisoryLWX9 hr
Oct 22, 10:21 AM EDTDense Fog AdvisoryLWX99 min
Oct 23, 3:26 AM EDTDense Fog AdvisoryLWX8 hr
Oct 27, 1:36 AM EDTDense Fog AdvisoryLWX7 hr
Oct 28, 3:05 PM EDTFlood WatchLWX25 hr
Oct 31, 8:59 AM EDTCoastal Flood AdvisoryLWX14 hr
Nov 2, 1:30 PM ESTFreeze WarningLWX19 hr
Nov 11, 10:46 AM ESTFlash Flood WatchLWX16 hr
Nov 12, 1:11 AM ESTAreal Flood WarningLWX36 hr
Nov 15, 7:03 AM ESTCoastal Flood AdvisoryLWX15 hr
Nov 15, 3:33 PM ESTMesoscale DiscussionSPC2 hr
Nov 15, 5:35 PM ESTSevere Thunderstorm WatchSPC5 hr
Nov 15, 8:16 PM ESTSevere Thunderstorm WarningLWX59 min
Nov 30, 1:07 PM ESTTornado WatchSPC6 hr
Dec 23, 4:27 AM ESTFlash Flood WatchLWX47 hr
Dec 24, 5:54 PM ESTCoastal Flood AdvisoryLWX24 hr

By product

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

The busiest days

Days with the most alerts issued, by UTC date.

Nearby

Alerts in force nowTornadoes on recordForecastThe radar archive20192021

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.