Alert archive / Virginia / Rockingham County

Weather alerts in Rockingham County, Virginia, 2016

155 weather alerts in 2016, from the National Weather Service and the Storm Prediction Center. An alert counts here when it covered this county.

Rockingham County and its neighbors

Each county as a circle sized by its count in 2016. Tap one for its archive.

Alerts
155
Warnings
54
Watches
28
Advisories
48
Busiest month
June37 alerts
Busiest day
June 16, 201610 alerts

Over time

By month

Warning verification

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

Rockingham County, 2016

WarningsWith a reportFalse alarm ratioReportsInside a warningMean lead time
Tornado warnings00
Severe thunderstorm warnings231343%2085%23 min
Flash flood warnings7357%7100%90 min

Each office's whole area, 2016

WarningsWith a reportFalse alarm ratioReportsInside a warningMean lead time
NWS Baltimore/Washington: tornado warnings14193%250%8 min
NWS Baltimore/Washington: severe thunderstorm warnings30521230%85181%20 min
NWS Baltimore/Washington: flash flood warnings452447%6189%88 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 10, 3:29 AM ESTWind AdvisoryLWX15 hr
Jan 12, 3:31 AM ESTWind AdvisoryLWX20 hr
Jan 17, 3:44 AM ESTWind Chill AdvisoryLWX56 hr
Jan 20, 10:13 AM ESTWinter Storm WatchLWX26 hr
Jan 21, 12:09 PM ESTBlizzard WarningLWX60 hr
Jan 21, 12:09 PM ESTWinter Storm WarningLWX58 hr
Jan 22, 8:56 AM ESTMesoscale DiscussionSPC4 hr
Jan 22, 12:34 PM ESTMesoscale DiscussionSPC5 hr
Jan 22, 4:42 PM ESTMesoscale DiscussionSPC6 hr
Jan 22, 6:47 PM ESTMesoscale DiscussionSPC5 hr
Feb 2, 3:25 PM ESTWind AdvisoryLWX19 hr
Feb 8, 12:10 PM ESTWinter Weather AdvisoryLWX33 hr
Feb 10, 3:52 AM ESTWind Chill AdvisoryLWX30 hr
Feb 12, 1:12 PM ESTWind Chill AdvisoryLWX43 hr
Feb 13, 3:06 PM ESTWinter Storm WatchLWX23 hr
Feb 14, 3:44 AM ESTWinter Storm WarningLWX56 hr
Feb 15, 1:46 PM ESTMesoscale DiscussionSPC5 hr
Feb 15, 3:06 PM ESTFlood WatchLWX24 hr
Feb 21, 5:20 AM ESTFlash Flood WatchLWX7 hr
Feb 23, 3:21 PM ESTFlood WatchLWX33 hr
Feb 23, 9:28 PM ESTWind AdvisoryLWX51 hr
Feb 28, 9:18 PM ESTWind AdvisoryLWX13 hr
Mar 1, 3:31 AM ESTWind AdvisoryLWX33 hr
Mar 3, 3:31 AM ESTWinter Weather AdvisoryLWX29 hr
Mar 18, 9:21 PM EDTWinter Weather AdvisoryLWX24 hr
Mar 23, 9:26 PM EDTFire Weather WatchLWX7 hr
Mar 24, 3:58 AM EDTRed Flag WarningLWX16 hr
Mar 28, 3:57 AM EDTWind AdvisoryLWX17 hr
Apr 1, 2:29 PM EDTFreeze WatchLWX14 hr
Apr 2, 4:10 AM EDTFreeze WarningLWX29 hr
Apr 2, 4:10 AM EDTHigh Wind WarningLWX28 hr
Apr 2, 4:10 AM EDTWind AdvisoryLWX26 hr
Apr 3, 5:49 AM EDTWind AdvisoryLWX5 hr
Apr 3, 2:39 PM EDTFrost AdvisoryLWX17 hr
Apr 3, 2:39 PM EDTFreeze WatchLWX25 hr
Apr 4, 4:04 AM EDTFreeze WarningLWX30 hr
Apr 4, 4:43 AM EDTFreeze WatchLWX23 hr
Apr 5, 4:09 AM EDTFreeze WarningLWX29 hr
Apr 8, 4:08 AM EDTFreeze WatchLWX23 hr
Apr 8, 4:08 AM EDTFreeze WarningLWX24 hr
Apr 8, 9:27 PM EDTWind AdvisoryLWX23 hr
Apr 9, 3:30 AM EDTFreeze WarningLWX31 hr
Apr 12, 1:46 PM EDTFrost AdvisoryLWX19 hr
Apr 13, 1:26 PM EDTFrost AdvisoryLWX20 hr
Apr 13, 9:21 PM EDTFreeze WarningLWX12 hr
Apr 14, 1:27 PM EDTFrost AdvisoryLWX20 hr
May 1, 6:59 PM EDTSevere Thunderstorm WarningLWX46 min
May 1, 8:24 PM EDTSevere Thunderstorm WarningLWX16 min
May 1, 9:07 PM EDTSevere Thunderstorm WarningLWX38 min
May 2, 5:42 AM EDTDense Fog AdvisoryLWX2 hr
May 2, 1:34 PM EDTMesoscale DiscussionSPC116 min
May 2, 2:17 PM EDTSevere Thunderstorm WatchSPC8 hr
May 11, 5:04 PM EDTSevere Thunderstorm WarningLWX41 min
May 15, 2:37 PM EDTFrost AdvisoryLWX18 hr
May 27, 5:09 PM EDTFlash Flood WarningLWX3 hr
May 31, 4:19 AM EDTDense Fog AdvisoryLWX5 hr
Jun 2, 12:53 PM EDTAreal Flood WarningLWX3 hr
Jun 2, 1:09 PM EDTSevere Thunderstorm WarningLWX27 min
Jun 2, 2:54 PM EDTAreal Flood WarningLWX6 hr
Jun 2, 3:04 PM EDTSevere Thunderstorm WarningLWX28 min
Jun 4, 3:34 AM EDTFlash Flood WatchLWX23 hr
Jun 4, 1:33 PM EDTMesoscale DiscussionSPC117 min
Jun 4, 3:13 PM EDTFlash Flood WarningLWX4 hr
Jun 4, 3:39 PM EDTSevere Thunderstorm WarningLWX51 min
Jun 4, 4:56 PM EDTAreal Flood WarningLWX6 hr
Jun 4, 6:11 PM EDTAreal Flood WarningLWX6 hr
Jun 4, 11:38 PM EDTAreal Flood WarningLWX13 hr
Jun 5, 10:08 AM EDTFlash Flood WatchLWX8 hr
Jun 5, 1:14 PM EDTMesoscale DiscussionSPC91 min
Jun 5, 3:12 PM EDTSevere Thunderstorm WatchSPC6 hr
Jun 16, 4:04 AM EDTFlash Flood WatchLWX23 hr
Jun 16, 11:27 AM EDTMesoscale DiscussionSPC63 min
Jun 16, 1:08 PM EDTMesoscale DiscussionSPC97 min
Jun 16, 1:58 PM EDTSevere Thunderstorm WatchSPC8 hr
Jun 16, 2:11 PM EDTSevere Thunderstorm WarningLWX49 min
Jun 16, 4:20 PM EDTMesoscale DiscussionSPC55 min
Jun 16, 6:01 PM EDTSevere Thunderstorm WarningLWX69 min
Jun 16, 6:54 PM EDTMesoscale DiscussionSPC96 min
Jun 16, 6:55 PM EDTSevere Thunderstorm WarningLWX63 min
Jun 16, 7:48 PM EDTSevere Thunderstorm WarningLWX57 min
Jun 21, 1:06 PM EDTSevere Thunderstorm WatchSPC9 hr
Jun 21, 2:16 PM EDTSevere Thunderstorm WarningLWX44 min
Jun 21, 3:51 PM EDTSevere Thunderstorm WarningLWX39 min
Jun 21, 4:49 PM EDTAreal Flood WarningLWX6 hr
Jun 21, 6:30 PM EDTMesoscale DiscussionSPC90 min
Jun 22, 3:57 AM EDTFlash Flood WatchLWX42 hr
Jun 23, 7:06 AM EDTAreal Flood WarningLWX9 hr
Jun 23, 3:55 PM EDTSevere Thunderstorm WarningLWX15 min
Jun 24, 4:44 PM EDTMesoscale DiscussionSPC2 hr
Jun 24, 4:50 PM EDTSevere Thunderstorm WarningLWX40 min
Jun 24, 5:19 PM EDTSevere Thunderstorm WarningLWX26 min
Jun 24, 5:41 PM EDTFlash Flood WarningLWX3 hr
Jun 27, 3:24 AM EDTFlash Flood WatchLWX17 hr
Jul 16, 2:31 PM EDTSevere Thunderstorm WarningLWX44 min
Jul 16, 2:44 PM EDTAreal Flood WarningLWX6 hr
Jul 16, 2:57 PM EDTFlash Flood WarningLWX3 hr
Jul 16, 3:42 PM EDTFlash Flood WarningLWX3 hr
Jul 16, 3:49 PM EDTSevere Thunderstorm WarningLWX25 min
Jul 16, 4:53 PM EDTAreal Flood WarningLWX6 hr
Jul 18, 1:42 PM EDTSevere Thunderstorm WatchSPC6 hr
Jul 18, 2:31 PM EDTSevere Thunderstorm WarningLWX44 min
Jul 25, 3:05 PM EDTMesoscale DiscussionSPC115 min
Jul 25, 3:30 PM EDTSevere Thunderstorm WatchSPC6 hr
Jul 25, 5:02 PM EDTMesoscale DiscussionSPC88 min
Jul 25, 7:06 PM EDTMesoscale DiscussionSPC84 min
Jul 26, 5:06 PM EDTSevere Thunderstorm WarningLWX39 min
Jul 26, 5:27 PM EDTSevere Thunderstorm WarningLWX48 min
Jul 27, 1:45 PM EDTMesoscale DiscussionSPC2 hr
Jul 28, 4:45 AM EDTFlash Flood WatchLWX17 hr
Jul 28, 12:58 PM EDTMesoscale DiscussionSPC2 hr
Jul 28, 1:27 PM EDTSevere Thunderstorm WatchSPC11 hr
Jul 28, 4:10 PM EDTMesoscale DiscussionSPC95 min
Jul 28, 6:52 PM EDTMesoscale DiscussionSPC83 min
Jul 30, 6:51 PM EDTAreal Flood WarningLWX3 hr
Jul 31, 4:41 AM EDTDense Fog AdvisoryLWX4 hr
Aug 6, 1:46 PM EDTMesoscale DiscussionSPC2 hr
Aug 6, 5:00 PM EDTAreal Flood WarningLWX3 hr
Aug 15, 1:58 PM EDTMesoscale DiscussionSPC92 min
Aug 15, 2:23 PM EDTSevere Thunderstorm WarningLWX32 min
Aug 17, 11:55 AM EDTFlash Flood WatchLWX11 hr
Aug 17, 1:25 PM EDTMesoscale DiscussionSPC95 min
Aug 17, 2:02 PM EDTSevere Thunderstorm WatchSPC5 hr
Aug 17, 6:31 PM EDTFlash Flood WarningLWX3 hr
Aug 17, 7:11 PM EDTSevere Thunderstorm WarningLWX49 min
Aug 17, 7:26 PM EDTFlash Flood WarningLWX3 hr
Sep 7, 3:06 PM EDTMesoscale DiscussionSPC2 hr
Sep 20, 5:33 AM EDTDense Fog AdvisoryLWX4 hr
Sep 27, 5:30 PM EDTFlash Flood WatchLWX58 hr
Oct 6, 4:07 AM EDTDense Fog AdvisoryLWX7 hr
Oct 9, 12:12 AM EDTWind AdvisoryLWX17 hr
Oct 10, 1:28 PM EDTFrost AdvisoryLWX20 hr
Oct 21, 2:56 PM EDTWind AdvisoryLWX26 hr
Oct 24, 2:57 AM EDTWind AdvisoryLWX4 hr
Oct 24, 11:50 AM EDTFrost AdvisoryLWX21 hr
Oct 24, 4:44 PM EDTFreeze WatchLWX21 hr
Oct 25, 1:19 PM EDTFrost AdvisoryLWX20 hr
Nov 4, 2:19 PM EDTFrost AdvisoryLWX20 hr
Nov 19, 3:09 AM ESTWind AdvisoryLWX17 hr
Nov 19, 9:19 AM ESTHigh Wind WarningLWX35 hr
Nov 19, 2:09 PM ESTFire Weather WatchLWX14 hr
Nov 19, 8:10 PM ESTWind AdvisoryLWX44 hr
Nov 20, 3:46 AM ESTRed Flag WarningLWX13 hr
Nov 28, 4:58 PM ESTWind AdvisoryLWX12 hr
Nov 29, 6:11 PM ESTDense Fog AdvisoryLWX15 hr
Dec 4, 3:33 AM ESTWinter Weather AdvisoryLWX24 hr
Dec 5, 1:30 PM ESTWinter Weather AdvisoryLWX31 hr
Dec 11, 3:31 AM ESTFreezing Rain AdvisoryLWX26 hr
Dec 14, 3:09 PM ESTWind Chill AdvisoryLWX41 hr
Dec 16, 2:09 PM ESTFreezing Rain AdvisoryLWX22 hr
Dec 17, 2:29 PM ESTWind AdvisoryLWX22 hr
Dec 24, 8:40 PM ESTDense Fog AdvisoryLWX9 hr
Dec 25, 7:15 AM ESTDense Fog AdvisoryLWX4 hr
Dec 26, 11:51 AM ESTWind AdvisoryLWX22 hr
Dec 28, 2:02 PM ESTWind AdvisoryLWX52 hr
Dec 28, 8:29 PM ESTWinter Weather AdvisoryLWX12 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 archive20152017

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.