Alert archive / Virginia / Pittsylvania County

Weather alerts in Pittsylvania County, Virginia, 2018

231 weather alerts in 2018, from the National Weather Service and the Storm Prediction Center. An alert counts here when it covered this county.

Pittsylvania County and its neighbors

Each county as a circle sized by its count in 2018. Tap one for its archive.

Alerts
231
Warnings
82
Watches
19
Advisories
50
Busiest month
August53 alerts
Busiest day
October 11, 201811 alerts

Over time

By month

Warning verification

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

2 of 3 tornado warnings covering Pittsylvania County in 2018 had a tornado report inside them; 2 of 2 tornado reports fell inside a warning, on average 12 minutes after it went out.

Pittsylvania County, 2018

WarningsWith a reportFalse alarm ratioReportsInside a warningMean lead time
Tornado warnings3233%2100%12 min
Severe thunderstorm warnings342624%2955%25 min
Flash flood warnings151220%10100%102 min

Each office's whole area, 2018

WarningsWith a reportFalse alarm ratioReportsInside a warningMean lead time
NWS Blacksburg, VA: tornado warnings13469%1833%8 min
NWS Blacksburg, VA: severe thunderstorm warnings21114730%44070%23 min
NWS Blacksburg, VA: flash flood warnings1328238%29084%132 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 4, 3:46 AM ESTWind Chill AdvisoryRNK30 hr
Jan 5, 3:33 AM ESTWind Chill AdvisoryRNK32 hr
Jan 7, 2:51 PM ESTWinter Weather AdvisoryRNK33 hr
Jan 12, 1:38 PM ESTSpecial Weather StatementRNK37 min
Jan 12, 2:18 PM ESTSpecial Weather StatementRNK57 min
Jan 12, 6:46 PM ESTSpecial Weather StatementRNK59 min
Jan 12, 6:46 PM ESTMesoscale DiscussionSPC2 hr
Jan 12, 7:51 PM ESTSpecial Weather StatementRNK54 min
Jan 15, 2:32 PM ESTWinter Weather AdvisoryRNK4 days
Jan 16, 10:05 PM ESTWinter Storm WarningRNK23 hr
Jan 17, 7:21 AM ESTMesoscale DiscussionSPC5 hr
Jan 23, 3:34 AM ESTWind AdvisoryRNK30 hr
Feb 3, 3:46 AM ESTWinter Weather AdvisoryRNK39 hr
Feb 4, 5:59 AM ESTMesoscale DiscussionSPC4 hr
Feb 11, 3:52 AM ESTAreal Flood AdvisoryRNK9 hr
Feb 19, 11:24 PM ESTDense Fog AdvisoryRNK13 hr
Mar 1, 3:52 AM ESTHigh Wind WarningRNK48 hr
Mar 1, 3:52 AM ESTWind AdvisoryRNK39 hr
Mar 11, 4:47 AM EDTWinter Weather AdvisoryRNK3 days
Mar 12, 11:54 AM EDTSpecial Weather StatementRNK36 min
Mar 20, 5:06 AM EDTWinter Weather AdvisoryRNK34 hr
Mar 20, 10:02 AM EDTSpecial Weather StatementRNK13 min
Mar 20, 9:05 PM EDTSpecial Weather StatementRNK55 min
Mar 23, 3:46 PM EDTWinter Weather AdvisoryRNK37 hr
Apr 15, 2:29 PM EDTMesoscale DiscussionSPC91 min
Apr 15, 3:02 PM EDTTornado WatchSPC8 hr
Apr 15, 5:45 PM EDTTornado WarningRNK45 min
Apr 15, 5:45 PM EDTMesoscale DiscussionSPC90 min
Apr 15, 6:23 PM EDTTornado WarningRNK26 min
Apr 15, 6:47 PM EDTSevere Thunderstorm WarningRNK88 min
Apr 15, 8:31 PM EDTMesoscale DiscussionSPC89 min
Apr 16, 3:08 PM EDTFrost AdvisoryRNK18 hr
Apr 19, 3:33 PM EDTFrost AdvisoryRNK17 hr
Apr 26, 10:55 PM EDTSpecial Weather StatementRNK50 min
Apr 27, 4:13 AM EDTDense Fog AdvisoryRNK5 hr
May 6, 5:42 PM EDTSpecial Weather StatementRNK33 min
May 10, 12:36 PM EDTMesoscale DiscussionSPC114 min
May 10, 1:14 PM EDTSevere Thunderstorm WatchSPC8 hr
May 10, 3:29 PM EDTSevere Thunderstorm WarningRNK61 min
May 10, 4:27 PM EDTSevere Thunderstorm WarningRNK48 min
May 10, 4:53 PM EDTMesoscale DiscussionSPC67 min
May 10, 8:13 PM EDTSpecial Weather StatementRNK32 min
May 16, 5:13 PM EDTAreal Flood AdvisoryRNK77 min
May 17, 4:13 AM EDTFlash Flood WatchRNK68 hr
May 18, 4:05 AM EDTSpecial Weather StatementRNK55 min
May 18, 6:56 AM EDTSpecial Weather StatementRNK64 min
May 18, 2:51 PM EDTAreal Flood AdvisoryRNK2 hr
May 18, 3:23 PM EDTFlash Flood WarningRNK6 hr
May 18, 3:48 PM EDTFlash Flood WarningRNK6 hr
May 18, 9:34 PM EDTAreal Flood WarningRNK6 hr
May 18, 9:42 PM EDTRiver Flood WarningRNK42 hr
May 18, 9:45 PM EDTAreal Flood WarningRNK6 hr
May 19, 11:46 PM EDTSpecial Weather StatementRNK74 min
May 21, 6:07 PM EDTSpecial Weather StatementRNK53 min
May 22, 6:52 PM EDTSevere Thunderstorm WarningRNK53 min
May 22, 7:54 PM EDTSevere Thunderstorm WarningRNK51 min
May 23, 3:51 PM EDTMesoscale DiscussionSPC2 hr
May 28, 3:13 PM EDTFlash Flood WatchRNK3 days
May 30, 2:37 PM EDTAreal Flood AdvisoryRNK3 hr
Jun 1, 4:44 PM EDTMesoscale DiscussionSPC3 hr
Jun 1, 5:20 PM EDTSpecial Weather StatementRNK25 min
Jun 2, 11:32 AM EDTFlash Flood WatchRNK9 hr
Jun 10, 2:33 PM EDTSevere Thunderstorm WarningRNK57 min
Jun 10, 3:23 PM EDTMesoscale DiscussionSPC2 hr
Jun 10, 3:40 PM EDTAreal Flood AdvisoryRNK4 hr
Jun 10, 7:35 PM EDTSpecial Weather StatementRNK40 min
Jun 10, 8:04 PM EDTAreal Flood AdvisoryRNK3 hr
Jun 10, 8:08 PM EDTSevere Thunderstorm WarningRNK67 min
Jun 13, 5:36 PM EDTSpecial Weather StatementRNK39 min
Jun 19, 9:52 PM EDTSpecial Weather StatementRNK53 min
Jun 19, 10:47 PM EDTSpecial Weather StatementRNK28 min
Jun 19, 11:17 PM EDTSpecial Weather StatementRNK43 min
Jun 20, 2:19 PM EDTMesoscale DiscussionSPC116 min
Jun 20, 5:46 PM EDTSpecial Weather StatementRNK29 min
Jun 20, 6:15 PM EDTSevere Thunderstorm WarningRNK45 min
Jun 20, 7:03 PM EDTSpecial Weather StatementRNK27 min
Jun 21, 10:15 PM EDTSevere Thunderstorm WarningRNK60 min
Jun 22, 3:19 PM EDTMesoscale DiscussionSPC86 min
Jun 23, 5:40 PM EDTMesoscale DiscussionSPC2 hr
Jul 6, 2:49 PM EDTSevere Thunderstorm WarningRNK56 min
Jul 6, 4:35 PM EDTSevere Thunderstorm WarningRNK55 min
Jul 6, 6:39 PM EDTSpecial Weather StatementRNK66 min
Jul 11, 2:15 PM EDTMesoscale DiscussionSPC3 hr
Jul 11, 3:28 PM EDTSevere Thunderstorm WarningRNK62 min
Jul 11, 4:50 PM EDTSpecial Weather StatementRNK25 min
Jul 11, 7:03 PM EDTSevere Thunderstorm WarningRNK57 min
Jul 11, 8:18 PM EDTSpecial Weather StatementRNK42 min
Jul 16, 9:43 PM EDTSpecial Weather StatementRNK32 min
Jul 22, 9:08 PM EDTSevere Thunderstorm WarningRNK67 min
Jul 22, 10:16 PM EDTSpecial Weather StatementRNK44 min
Jul 23, 2:45 PM EDTFlash Flood WatchRNK14 hr
Jul 23, 5:57 PM EDTSpecial Weather StatementRNK33 min
Jul 23, 6:26 PM EDTSpecial Weather StatementRNK34 min
Jul 24, 7:53 PM EDTAreal Flood AdvisoryRNK6 hr
Jul 24, 9:02 PM EDTFlash Flood WarningRNK6 hr
Jul 24, 10:07 PM EDTAreal Flood AdvisoryRNK4 hr
Jul 25, 12:59 AM EDTAreal Flood AdvisoryRNK3 hr
Jul 25, 4:12 PM EDTSpecial Weather StatementRNK63 min
Jul 25, 5:43 PM EDTAreal Flood AdvisoryRNK2 hr
Jul 26, 1:19 AM EDTDense Fog AdvisoryRNK8 hr
Jul 27, 4:26 PM EDTSpecial Weather StatementRNK34 min
Jul 30, 7:46 AM EDTAreal Flood AdvisoryRNK3 hr
Jul 30, 11:23 PM EDTSpecial Weather StatementRNK67 min
Jul 30, 11:51 PM EDTAreal Flood WarningRNK4 hr
Jul 31, 3:46 AM EDTFlash Flood WatchRNK24 hr
Jul 31, 9:31 PM EDTAreal Flood AdvisoryRNK3 hr
Jul 31, 11:20 PM EDTAreal Flood AdvisoryRNK115 min
Aug 1, 3:44 AM EDTFlash Flood WatchRNK64 hr
Aug 1, 6:35 PM EDTSpecial Weather StatementRNK55 min
Aug 1, 6:58 PM EDTAreal Flood AdvisoryRNK2 hr
Aug 1, 7:04 PM EDTSevere Thunderstorm WarningRNK41 min
Aug 1, 7:45 PM EDTSevere Thunderstorm WarningRNK45 min
Aug 1, 7:50 PM EDTFlash Flood WarningRNK6 hr
Aug 1, 8:52 PM EDTSpecial Weather StatementRNK38 min
Aug 2, 7:21 AM EDTAreal Flood AdvisoryRNK3 hr
Aug 2, 8:34 AM EDTAreal Flood AdvisoryRNK3 hr
Aug 2, 9:00 AM EDTRiver Flood WarningRNK36 hr
Aug 2, 9:27 AM EDTSpecial Weather StatementRNK33 min
Aug 2, 10:33 AM EDTAreal Flood AdvisoryRNK3 hr
Aug 2, 10:57 AM EDTFlash Flood WarningRNK3 hr
Aug 2, 5:26 PM EDTSevere Thunderstorm WarningRNK48 min
Aug 2, 5:45 PM EDTFlash Flood WarningRNK12 hr
Aug 3, 4:02 PM EDTSpecial Weather StatementRNK58 min
Aug 3, 4:27 PM EDTSevere Thunderstorm WarningRNK63 min
Aug 3, 5:30 PM EDTSpecial Weather StatementRNK60 min
Aug 3, 8:04 PM EDTAreal Flood AdvisoryRNK100 min
Aug 7, 5:05 PM EDTSpecial Weather StatementRNK40 min
Aug 7, 5:57 PM EDTSpecial Weather StatementRNK63 min
Aug 7, 6:18 PM EDTSevere Thunderstorm WarningRNK57 min
Aug 7, 6:51 PM EDTSevere Thunderstorm WarningRNK34 min
Aug 8, 2:43 PM EDTSevere Thunderstorm WarningRNK62 min
Aug 8, 3:16 PM EDTSpecial Weather StatementRNK59 min
Aug 8, 3:40 PM EDTSevere Thunderstorm WarningRNK49 min
Aug 8, 4:35 PM EDTSpecial Weather StatementRNK55 min
Aug 11, 2:56 PM EDTMesoscale DiscussionSPC3 hr
Aug 12, 1:42 PM EDTAreal Flood AdvisoryRNK4 hr
Aug 12, 1:56 PM EDTSevere Thunderstorm WarningRNK79 min
Aug 12, 2:04 PM EDTSpecial Weather StatementRNK41 min
Aug 12, 2:06 PM EDTSevere Thunderstorm WarningRNK54 min
Aug 12, 2:18 PM EDTMesoscale DiscussionSPC2 hr
Aug 12, 2:47 PM EDTSevere Thunderstorm WarningRNK58 min
Aug 12, 2:59 PM EDTAreal Flood AdvisoryRNK4 hr
Aug 13, 3:55 PM EDTSevere Thunderstorm WarningRNK65 min
Aug 13, 4:53 PM EDTSevere Thunderstorm WarningRNK60 min
Aug 13, 6:21 PM EDTSpecial Weather StatementRNK54 min
Aug 19, 4:35 PM EDTSpecial Weather StatementRNK55 min
Aug 19, 4:48 PM EDTSevere Thunderstorm WarningRNK57 min
Aug 19, 5:44 PM EDTSpecial Weather StatementRNK61 min
Aug 19, 7:08 PM EDTSpecial Weather StatementRNK67 min
Aug 19, 7:36 PM EDTAreal Flood AdvisoryRNK3 hr
Aug 19, 8:17 PM EDTFlash Flood WarningRNK5 hr
Aug 19, 9:21 PM EDTSpecial Weather StatementRNK54 min
Aug 20, 1:20 AM EDTAreal Flood WarningRNK3 hr
Aug 20, 2:34 PM EDTFlash Flood WatchRNK12 hr
Aug 27, 5:22 PM EDTAreal Flood AdvisoryRNK98 min
Aug 30, 7:51 PM EDTSevere Thunderstorm WarningRNK35 min
Aug 30, 8:13 PM EDTSpecial Weather StatementRNK32 min
Aug 30, 8:48 PM EDTSpecial Weather StatementRNK27 min
Sep 1, 1:21 AM EDTFlash Flood WarningRNK6 hr
Sep 1, 2:08 AM EDTSevere Thunderstorm WarningRNK24 min
Sep 1, 2:17 AM EDTAreal Flood WarningRNK4 hr
Sep 1, 2:19 AM EDTAreal Flood AdvisoryRNK2 hr
Sep 1, 3:40 PM EDTSpecial Weather StatementRNK50 min
Sep 1, 4:38 PM EDTSpecial Weather StatementRNK67 min
Sep 1, 5:10 PM EDTSevere Thunderstorm WarningRNK65 min
Sep 8, 1:25 AM EDTSpecial Weather StatementRNK65 min
Sep 9, 4:21 AM EDTAreal Flood AdvisoryRNK5 hr
Sep 14, 4:28 AM EDTFlash Flood WatchRNK4 days
Sep 15, 6:23 AM EDTSpecial Weather StatementRNK52 min
Sep 15, 4:43 PM EDTAreal Flood WarningRNK5 hr
Sep 15, 9:28 PM EDTRiver Flood WarningRNK5 days
Sep 16, 3:18 PM EDTAreal Flood AdvisoryRNK6 hr
Sep 16, 8:26 PM EDTFlash Flood WarningRNK12 hr
Sep 22, 1:36 PM EDTFlash Flood WatchRNK14 hr
Sep 22, 7:04 PM EDTFlash Flood WarningRNK3 hr
Sep 22, 7:27 PM EDTSpecial Weather StatementRNK63 min
Sep 22, 8:38 PM EDTFlash Flood WarningRNK3 hr
Sep 22, 9:39 PM EDTFlash Flood WarningRNK3 hr
Sep 22, 9:58 PM EDTAreal Flood WarningRNK6 hr
Sep 22, 11:35 PM EDTAreal Flood WarningRNK9 hr
Sep 23, 12:27 AM EDTAreal Flood WarningRNK8 hr
Sep 23, 3:07 AM EDTRiver Flood WarningRNK18 hr
Sep 23, 7:23 AM EDTRiver Flood WarningRNK21 hr
Sep 26, 3:40 PM EDTMesoscale DiscussionSPC3 hr
Sep 26, 3:56 PM EDTFlash Flood WatchRNK4 hr
Sep 27, 11:35 PM EDTAreal Flood AdvisoryRNK2 hr
Oct 7, 2:32 AM EDTDense Fog AdvisoryRNK7 hr
Oct 9, 3:56 PM EDTFlash Flood WatchRNK51 hr
Oct 11, 4:43 AM EDTWind AdvisoryRNK30 hr
Oct 11, 9:58 AM EDTTornado WatchSPC13 hr
Oct 11, 11:08 AM EDTRiver Flood WarningRNK61 hr
Oct 11, 1:38 PM EDTFlash Flood WarningRNK12 hr
Oct 11, 3:10 PM EDTSevere Thunderstorm WarningRNK65 min
Oct 11, 3:42 PM EDTTornado WarningRNK48 min
Oct 11, 3:54 PM EDTMesoscale DiscussionSPC2 hr
Oct 11, 4:11 PM EDTSevere Thunderstorm WarningRNK64 min
Oct 11, 4:14 PM EDTFlash Flood Warning EmergencyRNK6 hr
Oct 11, 4:17 PM EDTSevere Thunderstorm WarningRNK58 min
Oct 11, 6:32 PM EDTRiver Flood WarningRNK29 hr
Oct 11, 10:13 PM EDTFlash Flood Warning EmergencyRNK5 hr
Oct 12, 1:41 AM EDTAreal Flood WarningRNK9 hr
Oct 12, 10:49 AM EDTAreal Flood WarningRNK4 hr
Oct 21, 4:02 AM EDTFreeze WarningRNK30 hr
Nov 2, 3:47 PM EDTMesoscale DiscussionSPC118 min
Nov 2, 5:27 PM EDTSpecial Weather StatementRNK63 min
Nov 12, 8:25 PM ESTRiver Flood WarningRNK49 hr
Nov 12, 9:17 PM ESTAreal Flood AdvisoryRNK6 hr
Nov 13, 3:15 AM ESTAreal Flood AdvisoryRNK6 hr
Nov 13, 3:25 PM ESTFlood WatchRNK47 hr
Nov 15, 3:26 PM ESTRiver Flood WarningRNK26 hr
Nov 23, 4:04 AM ESTWinter Weather AdvisoryRNK31 hr
Nov 25, 2:21 AM ESTDense Fog AdvisoryRNK7 hr
Dec 1, 5:11 PM ESTDense Fog AdvisoryRNK16 hr
Dec 6, 3:31 PM ESTWinter Storm WatchRNK47 hr
Dec 7, 3:27 AM ESTWinter Storm WarningRNK3 days
Dec 9, 3:08 AM ESTMesoscale DiscussionSPC5 hr
Dec 9, 8:18 AM ESTMesoscale DiscussionSPC5 hr
Dec 9, 12:34 PM ESTMesoscale DiscussionSPC5 hr
Dec 13, 2:54 PM ESTFlood WatchRNK48 hr
Dec 15, 9:44 AM ESTRiver Flood WarningRNK38 hr
Dec 20, 3:27 AM ESTFlood WatchRNK37 hr
Dec 20, 3:04 PM ESTRiver Flood WarningRNK71 hr
Dec 20, 9:36 PM ESTAreal Flood WarningRNK9 hr
Dec 20, 10:45 PM ESTSpecial Weather StatementRNK60 min
Dec 20, 11:18 PM ESTAreal Flood WarningRNK3 hr
Dec 21, 1:03 AM ESTRiver Flood WarningRNK14 hr
Dec 21, 2:11 AM ESTAreal Flood AdvisoryRNK3 hr
Dec 21, 2:33 PM ESTMesoscale DiscussionSPC57 min
Dec 26, 3:00 PM ESTFlood WatchRNK52 hr
Dec 28, 10:48 AM ESTRiver Flood WarningRNK52 hr
Dec 28, 4:59 PM ESTAreal Flood AdvisoryRNK3 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 archive20172019

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.