Alert archive / Virginia / Warren County

Weather alerts in Warren County, Virginia, 2010

165 weather alerts in 2010, from the National Weather Service and the Storm Prediction Center. An alert counts here when it covered this county.

Warren County and its neighbors

Each county as a circle sized by its count in 2010. Tap one for its archive.

Alerts
165
Warnings
39
Watches
37
Advisories
34
Busiest month
April24 alerts
Busiest day
May 28, 20107 alerts

Over time

By month

Warning verification

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

Warren County, 2010

WarningsWith a reportFalse alarm ratioReportsInside a warningMean lead time
Tornado warnings00
Severe thunderstorm warnings181517%650%20 min
Flash flood warnings440%4100%151 min

Each office's whole area, 2010

WarningsWith a reportFalse alarm ratioReportsInside a warningMean lead time
NWS Baltimore/Washington: tornado warnings31294%450%17 min
NWS Baltimore/Washington: severe thunderstorm warnings25719823%76286%21 min
NWS Baltimore/Washington: flash flood warnings643545%13992%166 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 2, 4:15 AM ESTWind Chill AdvisoryLWX53 hr
Jan 2, 4:21 AM ESTWind AdvisoryLWX38 hr
Jan 7, 3:48 AM ESTWinter Weather AdvisoryLWX57 hr
Jan 20, 2:50 PM ESTWinter Storm WatchLWX22 hr
Jan 21, 12:55 PM ESTWinter Weather AdvisoryLWX24 hr
Jan 23, 1:08 PM ESTFlash Flood WatchLWX48 hr
Jan 25, 3:19 AM ESTFlash Flood WarningLWX6 hr
Jan 25, 7:57 AM ESTAreal Flood WarningLWX6 hr
Jan 25, 2:14 PM ESTAreal Flood WarningLWX10 hr
Jan 25, 4:18 PM ESTRiver Flood WarningLWX37 hr
Jan 29, 11:00 AM ESTWinter Weather AdvisoryLWX38 hr
Feb 2, 3:07 AM ESTWinter Weather AdvisoryLWX26 hr
Feb 2, 12:03 PM ESTWinter Storm WarningLWX17 hr
Feb 3, 2:45 PM ESTWinter Storm WatchLWX19 hr
Feb 4, 9:59 AM ESTWinter Storm WarningLWX55 hr
Feb 5, 11:45 AM ESTMesoscale DiscussionSPC4 hr
Feb 5, 6:58 PM ESTMesoscale DiscussionSPC4 hr
Feb 7, 3:15 PM ESTWinter Storm WatchLWX35 hr
Feb 8, 3:04 PM ESTWinter Storm WarningLWX46 hr
Feb 10, 3:45 AM ESTBlizzard WarningLWX23 hr
Feb 15, 3:49 AM ESTWinter Weather AdvisoryLWX17 hr
Feb 25, 9:35 AM ESTHigh Wind WatchLWX6 hr
Feb 25, 3:41 PM ESTHigh Wind WarningLWX26 hr
Mar 10, 5:46 AM ESTFlood WatchLWX3 days
Mar 13, 6:21 AM ESTAreal Flood WarningLWX6 hr
Mar 13, 11:42 AM ESTRiver Flood WarningLWX34 hr
Mar 14, 11:21 AM EDTAreal Flood WarningLWX6 hr
Mar 22, 12:44 PM EDTMesoscale DiscussionSPC2 hr
Mar 22, 2:38 PM EDTSevere Thunderstorm WarningLWX37 min
Mar 28, 1:49 PM EDTFlood WatchLWX14 hr
Apr 2, 1:03 PM EDTFire Weather WatchLWX20 hr
Apr 7, 9:57 AM EDTRed Flag WarningLWX9 hr
Apr 8, 6:37 PM EDTMesoscale DiscussionSPC53 min
Apr 10, 3:00 PM EDTFrost AdvisoryLWX17 hr
Apr 14, 12:00 AM EDTDense Fog AdvisoryLWX10 hr
Apr 16, 6:16 PM EDTSpecial Weather StatementLWX74 min
Apr 16, 6:20 PM EDTSpecial Weather StatementLWX70 min
Apr 16, 8:05 PM EDTSpecial Weather StatementLWX70 min
Apr 17, 9:31 AM EDTRed Flag WarningLWX11 hr
Apr 18, 8:59 AM EDTFreeze WatchLWX5 hr
Apr 18, 2:14 PM EDTFrost AdvisoryLWX15 hr
Apr 19, 2:57 PM EDTFrost AdvisoryLWX17 hr
Apr 22, 12:37 AM EDTDense Fog AdvisoryLWX8 hr
Apr 25, 10:56 AM EDTMesoscale DiscussionSPC2 hr
Apr 25, 2:26 PM EDTMesoscale DiscussionSPC94 min
Apr 25, 4:37 PM EDTSevere Thunderstorm WatchSPC6 hr
Apr 25, 6:16 PM EDTMesoscale DiscussionSPC89 min
Apr 25, 8:35 PM EDTSevere Thunderstorm WarningLWX40 min
Apr 25, 8:53 PM EDTMesoscale DiscussionSPC2 hr
Apr 25, 9:17 PM EDTSevere Thunderstorm WarningLWX43 min
Apr 25, 9:36 PM EDTSpecial Weather StatementLWX24 min
Apr 26, 2:05 PM EDTSpecial Weather StatementLWX25 min
Apr 27, 1:50 PM EDTFrost AdvisoryLWX16 hr
Apr 28, 2:05 PM EDTFrost AdvisoryLWX19 hr
May 2, 4:45 PM EDTMesoscale DiscussionSPC60 min
May 2, 5:58 PM EDTSevere Thunderstorm WatchSPC5 hr
May 2, 8:27 PM EDTMesoscale DiscussionSPC63 min
May 7, 3:24 PM EDTWind AdvisoryLWX29 hr
May 8, 5:25 AM EDTSpecial Weather StatementLWX35 min
May 8, 12:50 PM EDTRed Flag WarningLWX7 hr
May 11, 12:13 PM EDTSpecial Weather StatementLWX32 min
May 12, 2:20 PM EDTSevere Thunderstorm WatchSPC6 hr
May 14, 11:56 AM EDTMesoscale DiscussionSPC2 hr
May 14, 2:29 PM EDTSevere Thunderstorm WatchSPC7 hr
May 14, 6:35 PM EDTMesoscale DiscussionSPC55 min
May 20, 3:13 AM EDTDense Fog AdvisoryLWX6 hr
May 23, 6:23 AM EDTDense Fog AdvisoryLWX110 min
May 27, 3:20 AM EDTFlash Flood WatchLWX24 hr
May 27, 1:23 PM EDTSevere Thunderstorm WatchSPC8 hr
May 27, 7:28 PM EDTSevere Thunderstorm WarningLWX47 min
May 27, 8:08 PM EDTSevere Thunderstorm WarningLWX52 min
May 27, 8:20 PM EDTSpecial Weather StatementLWX25 min
May 27, 8:28 PM EDTSevere Thunderstorm WarningLWX47 min
May 27, 8:59 PM EDTSevere Thunderstorm WarningLWX46 min
May 27, 9:22 PM EDTSevere Thunderstorm WarningLWX38 min
May 28, 3:10 AM EDTFlash Flood WatchLWX16 hr
May 28, 3:12 PM EDTSevere Thunderstorm WatchSPC5 hr
Jun 3, 11:27 AM EDTMesoscale DiscussionSPC93 min
Jun 3, 1:32 PM EDTSevere Thunderstorm WatchSPC7 hr
Jun 3, 3:36 PM EDTMesoscale DiscussionSPC54 min
Jun 3, 3:41 PM EDTSevere Thunderstorm WarningLWX49 min
Jun 4, 2:39 PM EDTSevere Thunderstorm WatchSPC8 hr
Jun 4, 4:24 PM EDTMesoscale DiscussionSPC66 min
Jun 4, 7:03 PM EDTMesoscale DiscussionSPC57 min
Jun 6, 11:42 AM EDTMesoscale DiscussionSPC63 min
Jun 6, 12:40 PM EDTTornado WatchSPC6 hr
Jun 12, 2:47 PM EDTMesoscale DiscussionSPC88 min
Jun 12, 4:03 PM EDTSevere Thunderstorm WarningLWX42 min
Jun 12, 4:16 PM EDTMesoscale DiscussionSPC89 min
Jun 22, 11:35 AM EDTMesoscale DiscussionSPC25 min
Jun 22, 3:48 PM EDTMesoscale DiscussionSPC27 min
Jun 24, 12:16 PM EDTMesoscale DiscussionSPC89 min
Jun 24, 12:28 PM EDTSevere Thunderstorm WatchSPC8 hr
Jun 24, 2:34 PM EDTMesoscale DiscussionSPC116 min
Jun 24, 2:58 PM EDTSpecial Weather StatementLWX32 min
Jun 24, 3:00 PM EDTSevere Thunderstorm WarningLWX49 min
Jun 28, 12:26 PM EDTMesoscale DiscussionSPC2 hr
Jul 5, 1:50 PM EDTHeat AdvisoryLWX54 hr
Jul 5, 7:38 PM EDTExcessive Heat WatchLWX9 hr
Jul 9, 5:32 PM EDTFlash Flood WatchLWX6 hr
Jul 17, 1:09 PM EDTSpecial Weather StatementLWX66 min
Jul 22, 2:06 PM EDTHeat AdvisoryLWX31 hr
Jul 23, 9:14 PM EDTHeat AdvisoryLWX47 hr
Jul 25, 12:50 PM EDTMesoscale DiscussionSPC55 min
Jul 25, 1:21 PM EDTMesoscale DiscussionSPC54 min
Jul 25, 1:46 PM EDTSevere Thunderstorm WatchSPC6 hr
Jul 25, 2:01 PM EDTSevere Thunderstorm WarningLWX44 min
Jul 25, 2:36 PM EDTSevere Thunderstorm WarningLWX54 min
Jul 25, 2:53 PM EDTSpecial Weather StatementLWX37 min
Jul 25, 3:25 PM EDTMesoscale DiscussionSPC65 min
Jul 29, 11:54 AM EDTSevere Thunderstorm WatchSPC7 hr
Aug 4, 5:30 PM EDTMesoscale DiscussionSPC30 min
Aug 4, 5:52 PM EDTSevere Thunderstorm WatchSPC5 hr
Aug 4, 6:10 PM EDTSevere Thunderstorm WarningLWX65 min
Aug 4, 6:59 PM EDTSevere Thunderstorm WarningLWX61 min
Aug 4, 7:48 PM EDTMesoscale DiscussionSPC87 min
Aug 5, 12:37 PM EDTMesoscale DiscussionSPC53 min
Aug 5, 1:19 PM EDTSevere Thunderstorm WatchSPC9 hr
Aug 5, 2:26 PM EDTSevere Thunderstorm WarningLWX49 min
Aug 5, 3:56 PM EDTMesoscale DiscussionSPC64 min
Aug 5, 4:29 PM EDTSevere Thunderstorm WarningLWX46 min
Aug 5, 6:23 PM EDTMesoscale DiscussionSPC97 min
Aug 12, 1:52 PM EDTMesoscale DiscussionSPC83 min
Aug 12, 2:51 PM EDTSevere Thunderstorm WatchSPC5 hr
Aug 15, 5:09 PM EDTSpecial Weather StatementLWX36 min
Aug 16, 2:01 PM EDTMesoscale DiscussionSPC89 min
Aug 16, 2:13 PM EDTSevere Thunderstorm WatchSPC6 hr
Aug 16, 4:03 PM EDTSpecial Weather StatementLWX27 min
Aug 16, 4:37 PM EDTSpecial Weather StatementLWX23 min
Aug 18, 7:54 AM EDTAreal Flood WarningLWX3 hr
Sep 7, 2:39 PM EDTFire Weather WatchLWX19 hr
Sep 8, 9:42 AM EDTRed Flag WarningLWX9 hr
Sep 13, 5:36 AM EDTDense Fog AdvisoryLWX3 hr
Sep 16, 11:31 PM EDTSevere Thunderstorm WarningLWX29 min
Sep 22, 2:31 PM EDTMesoscale DiscussionSPC59 min
Sep 22, 2:45 PM EDTSevere Thunderstorm WatchSPC7 hr
Sep 27, 3:43 AM EDTFlash Flood WatchLWX28 hr
Sep 29, 2:21 AM EDTFlash Flood WatchLWX50 hr
Sep 30, 10:29 AM EDTFlash Flood WarningLWX4 hr
Sep 30, 10:56 PM EDTFlash Flood WarningLWX4 hr
Oct 15, 5:17 PM EDTSpecial Weather StatementLWX28 min
Oct 15, 6:12 PM EDTSpecial Weather StatementLWX18 min
Oct 22, 2:27 PM EDTFrost AdvisoryLWX19 hr
Oct 26, 2:43 PM EDTWind AdvisoryLWX11 hr
Oct 26, 6:21 PM EDTMesoscale DiscussionSPC54 min
Oct 26, 7:19 PM EDTTornado WatchSPC12 hr
Oct 26, 11:05 PM EDTMesoscale DiscussionSPC55 min
Oct 27, 12:24 AM EDTMesoscale DiscussionSPC66 min
Oct 27, 9:56 PM EDTDense Fog AdvisoryLWX7 hr
Oct 29, 3:50 AM EDTFreeze WatchLWX11 hr
Oct 29, 2:28 PM EDTFreeze WarningLWX19 hr
Nov 16, 2:19 PM ESTWind AdvisoryLWX25 hr
Nov 16, 11:11 PM ESTSpecial Weather StatementLWX34 min
Nov 22, 2:08 AM ESTDense Fog AdvisoryLWX8 hr
Nov 29, 3:20 PM ESTFlash Flood WatchLWX44 hr
Nov 30, 3:12 AM ESTWind AdvisoryLWX32 hr
Dec 1, 3:48 AM ESTTornado WatchSPC7 hr
Dec 1, 4:29 AM ESTFlash Flood WarningLWX6 hr
Dec 11, 2:13 PM ESTWinter Weather AdvisoryLWX22 hr
Dec 13, 10:28 AM ESTWind AdvisoryLWX36 hr
Dec 13, 10:54 AM ESTWind Chill AdvisoryLWX46 hr
Dec 15, 2:21 PM ESTWinter Weather AdvisoryLWX29 hr
Dec 23, 1:30 AM ESTWind AdvisoryLWX17 hr
Dec 25, 3:42 PM ESTWinter Weather AdvisoryLWX48 hr
Dec 26, 2:42 PM ESTWind AdvisoryLWX30 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 archive20092011

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.