Alert archive / Virginia / Albemarle County

Weather alerts in Albemarle County, Virginia, 2013

99 weather alerts in 2013, from the National Weather Service and the Storm Prediction Center. An alert counts here when it covered this county.

Albemarle County and its neighbors

Each county as a circle sized by its count in 2013. Tap one for its archive.

Alerts
99
Warnings
46
Watches
11
Advisories
0
Busiest month
June29 alerts
Busiest day
June 13, 201310 alerts

Over time

By month

Warning verification

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

Albemarle County, 2013

WarningsWith a reportFalse alarm ratioReportsInside a warningMean lead time
Tornado warnings00
Severe thunderstorm warnings201715%2075%17 min
Flash flood warnings13562%1283%90 min

Each office's whole area, 2013

WarningsWith a reportFalse alarm ratioReportsInside a warningMean lead time
NWS Baltimore/Washington: tornado warnings22959%2162%11 min
NWS Baltimore/Washington: severe thunderstorm warnings21014133%49574%21 min
NWS Baltimore/Washington: flash flood warnings815137%12478%74 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
Jan 30, 10:19 AM ESTMesoscale DiscussionSPC86 min
Jan 30, 12:54 PM ESTMesoscale DiscussionSPC96 min
Jan 30, 4:06 PM ESTMesoscale DiscussionSPC114 min
Jan 30, 5:41 PM ESTSpecial Weather StatementLWX49 min
Jan 30, 5:56 PM ESTSevere Thunderstorm WarningLWX49 min
Jan 30, 6:21 PM ESTSevere Thunderstorm WarningLWX39 min
Jan 30, 6:31 PM ESTTornado WatchSPC8 hr
Jan 30, 6:49 PM ESTSpecial Weather StatementLWX26 min
Jan 30, 9:12 PM ESTFlash Flood WarningLWX6 hr
Jan 30, 9:38 PM ESTMesoscale DiscussionSPC67 min
Jan 31, 2:34 AM ESTAreal Flood WarningLWX17 hr
Mar 5, 10:52 PM ESTMesoscale DiscussionSPC6 hr
Mar 16, 3:55 PM EDTMesoscale DiscussionSPC95 min
Mar 24, 11:53 AM EDTMesoscale DiscussionSPC6 hr
Apr 12, 5:05 AM EDTMesoscale DiscussionSPC85 min
Apr 19, 1:27 PM EDTMesoscale DiscussionSPC63 min
Apr 19, 2:31 PM EDTTornado WatchSPC7 hr
Apr 19, 4:36 PM EDTMesoscale DiscussionSPC114 min
Apr 19, 4:38 PM EDTSevere Thunderstorm WarningLWX37 min
Apr 19, 5:15 PM EDTSpecial Weather StatementLWX30 min
Apr 19, 5:23 PM EDTSevere Thunderstorm WarningLWX37 min
Apr 19, 6:01 PM EDTSevere Thunderstorm WarningLWX44 min
Apr 24, 6:59 PM EDTMesoscale DiscussionSPC2 hr
May 7, 4:40 PM EDTAreal Flood WarningLWX3 hr
May 7, 7:46 PM EDTFlash Flood WarningLWX89 min
May 7, 9:19 PM EDTAreal Flood WarningLWX3 hr
May 7, 10:12 PM EDTRiver Flood WarningRNK18 hr
May 8, 3:26 AM EDTAreal Flood WarningLWX2 hr
May 11, 1:44 PM EDTMesoscale DiscussionSPC91 min
May 11, 7:11 PM EDTMesoscale DiscussionSPC64 min
May 16, 12:04 PM EDTMesoscale DiscussionSPC56 min
May 16, 1:57 PM EDTMesoscale DiscussionSPC3 hr
May 16, 2:25 PM EDTSpecial Weather StatementLWX35 min
May 16, 2:46 PM EDTSpecial Weather StatementLWX29 min
May 16, 2:50 PM EDTSevere Thunderstorm WarningLWX40 min
May 16, 3:29 PM EDTSpecial Weather StatementLWX31 min
May 22, 3:53 PM EDTMesoscale DiscussionSPC67 min
May 23, 3:04 PM EDTSevere Thunderstorm WarningLWX56 min
May 23, 3:37 PM EDTMesoscale DiscussionSPC53 min
May 28, 4:01 PM EDTMesoscale DiscussionSPC2 hr
Jun 6, 5:11 PM EDTAreal Flood WarningLWX6 hr
Jun 9, 11:59 PM EDTAreal Flood WarningLWX6 hr
Jun 10, 12:56 PM EDTMesoscale DiscussionSPC2 hr
Jun 10, 2:02 PM EDTTornado WatchSPC10 hr
Jun 10, 4:38 PM EDTMesoscale DiscussionSPC97 min
Jun 13, 2:40 AM EDTMesoscale DiscussionSPC2 hr
Jun 13, 5:27 AM EDTMesoscale DiscussionSPC2 hr
Jun 13, 8:10 AM EDTMesoscale DiscussionSPC95 min
Jun 13, 11:38 AM EDTMesoscale DiscussionSPC67 min
Jun 13, 12:19 PM EDTSevere Thunderstorm WatchSPC7 hr
Jun 13, 12:49 PM EDTSevere Thunderstorm WarningLWX56 min
Jun 13, 1:27 PM EDTSevere Thunderstorm WarningLWX48 min
Jun 13, 1:41 PM EDTSevere Thunderstorm WarningLWX49 min
Jun 13, 1:45 PM EDTFlash Flood WarningLWX4 hr
Jun 13, 2:20 PM EDTMesoscale DiscussionSPC55 min
Jun 17, 4:59 PM EDTFlash Flood WarningLWX3 hr
Jun 17, 6:06 PM EDTFlash Flood WarningLWX5 hr
Jun 17, 8:15 PM EDTFlash Flood WarningLWX3 hr
Jun 17, 10:53 PM EDTAreal Flood WarningLWX6 hr
Jun 18, 1:05 PM EDTAreal Flood WarningLWX6 hr
Jun 26, 1:19 PM EDTMesoscale DiscussionSPC2 hr
Jun 26, 2:55 PM EDTSevere Thunderstorm WatchSPC7 hr
Jun 26, 3:18 PM EDTFlash Flood WarningLWX3 hr
Jun 26, 3:51 PM EDTSevere Thunderstorm WarningLWX39 min
Jun 26, 4:08 PM EDTFlash Flood WarningLWX3 hr
Jun 26, 4:38 PM EDTMesoscale DiscussionSPC97 min
Jun 28, 1:09 PM EDTSevere Thunderstorm WatchSPC7 hr
Jun 28, 7:11 PM EDTMesoscale DiscussionSPC64 min
Jun 30, 11:48 AM EDTMesoscale DiscussionSPC2 hr
Jul 10, 3:42 PM EDTSevere Thunderstorm WarningLWX63 min
Jul 11, 2:59 PM EDTFlash Flood WarningLWX3 hr
Jul 11, 9:35 PM EDTFlash Flood WarningLWX3 hr
Jul 12, 12:28 AM EDTAreal Flood WarningLWX13 hr
Jul 17, 2:22 PM EDTMesoscale DiscussionSPC83 min
Jul 19, 4:27 PM EDTSevere Thunderstorm WarningLWX48 min
Jul 20, 1:07 PM EDTSevere Thunderstorm WatchSPC8 hr
Jul 20, 3:56 PM EDTSevere Thunderstorm WarningLWX49 min
Jul 20, 4:38 PM EDTSevere Thunderstorm WarningLWX52 min
Jul 20, 4:45 PM EDTFlash Flood WarningLWX4 hr
Jul 20, 8:15 PM EDTMesoscale DiscussionSPC60 min
Aug 1, 4:17 PM EDTSevere Thunderstorm WarningLWX28 min
Aug 10, 11:02 AM EDTFlash Flood WarningLWX118 min
Aug 10, 11:56 AM EDTMesoscale DiscussionSPC94 min
Aug 22, 1:53 PM EDTSevere Thunderstorm WarningLWX37 min
Aug 22, 2:26 PM EDTMesoscale DiscussionSPC3 hr
Aug 31, 4:30 PM EDTSevere Thunderstorm WarningLWX45 min
Aug 31, 5:57 PM EDTSevere Thunderstorm WarningLWX48 min
Aug 31, 6:13 PM EDTFlash Flood WarningLWX3 hr
Aug 31, 9:15 PM EDTAreal Flood WarningLWX7 hr
Oct 7, 8:56 AM EDTTornado WatchSPC8 hr
Oct 7, 10:05 AM EDTSevere Thunderstorm WarningLWX40 min
Nov 1, 3:37 AM EDTMesoscale DiscussionSPC83 min
Nov 10, 12:27 PM ESTRed Flag WarningLWX5 hr
Nov 17, 11:31 PM ESTSevere Thunderstorm WatchSPC2 hr
Nov 23, 11:05 AM ESTFire Weather WatchLWX17 hr
Nov 24, 3:23 AM ESTRed Flag WarningLWX15 hr
Dec 8, 11:05 AM ESTMesoscale DiscussionSPC3 hr
Dec 22, 3:37 AM ESTSevere Thunderstorm WatchSPC5 hr
Dec 22, 6:14 AM ESTMesoscale DiscussionSPC61 min

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 archive20122014

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.