Alert archive / Virginia / Shenandoah County

Weather alerts in Shenandoah County, Virginia, 2024

114 weather alerts in 2024, from the National Weather Service and the Storm Prediction Center. An alert counts here when it covered this county.

Shenandoah County and its neighbors

Each county as a circle sized by its count in 2024. Tap one for its archive.

Alerts
114
Warnings
28
Watches
27
Advisories
39
Busiest month
July20 alerts
Busiest day
April 15, 20244 alerts

Over time

By month

Warning verification

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

Shenandoah County, 2024

WarningsWith a reportFalse alarm ratioReportsInside a warningMean lead time
Tornado warnings00
Severe thunderstorm warnings121017%771%16 min
Flash flood warnings2150%0

Each office's whole area, 2024

WarningsWith a reportFalse alarm ratioReportsInside a warningMean lead time
NWS Baltimore/Washington: tornado warnings501276%3569%19 min
NWS Baltimore/Washington: severe thunderstorm warnings30620334%53685%19 min
NWS Baltimore/Washington: flash flood warnings592656%6082%97 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, 2:21 PM ESTWinter Storm WatchLWX19 hr
Jan 5, 9:31 AM ESTWinter Storm WarningLWX35 hr
Jan 6, 11:47 AM ESTMesoscale DiscussionSPC5 hr
Jan 8, 1:57 AM ESTFlood WatchLWX44 hr
Jan 8, 3:52 AM ESTWinter Weather AdvisoryLWX36 hr
Jan 9, 2:40 PM ESTWind AdvisoryLWX25 hr
Jan 9, 5:23 PM ESTAreal Flood WarningLWX4 hr
Jan 12, 2:24 AM ESTWind AdvisoryLWX39 hr
Jan 14, 2:09 AM ESTWind AdvisoryLWX15 hr
Jan 14, 2:35 PM ESTWinter Weather AdvisoryLWX43 hr
Jan 18, 8:26 AM ESTWinter Weather AdvisoryLWX33 hr
Jan 27, 1:40 PM ESTFlood WatchLWX18 hr
Feb 12, 2:01 AM ESTDense Fog AdvisoryLWX8 hr
Feb 12, 4:07 AM ESTWinter Weather AdvisoryLWX31 hr
Feb 15, 9:46 AM ESTWinter Storm WatchLWX24 hr
Feb 16, 3:24 AM ESTWinter Storm WarningLWX28 hr
Feb 16, 3:24 AM ESTWinter Weather AdvisoryLWX25 hr
Feb 16, 7:40 PM ESTMesoscale DiscussionSPC4 hr
Feb 16, 10:33 PM ESTMesoscale DiscussionSPC4 hr
Feb 27, 2:58 PM ESTWind AdvisoryLWX36 hr
Mar 3, 2:23 AM ESTDense Fog AdvisoryLWX7 hr
Mar 4, 2:57 AM ESTDense Fog AdvisoryLWX7 hr
Mar 9, 3:15 AM ESTWind AdvisoryLWX61 hr
Mar 18, 2:33 PM EDTFire Weather WatchLWX36 hr
Mar 19, 12:02 PM EDTWind AdvisoryLWX32 hr
Mar 19, 2:50 PM EDTRed Flag WarningLWX29 hr
Mar 20, 1:38 PM EDTHigh Wind WarningLWX3 hr
Mar 20, 1:38 PM EDTWind AdvisoryLWX6 hr
Mar 28, 1:57 PM EDTWind AdvisoryLWX33 hr
Mar 31, 1:41 PM EDTFlood WatchLWX3 days
Apr 12, 3:29 AM EDTWind AdvisoryLWX37 hr
Apr 15, 11:01 AM EDTMesoscale DiscussionSPC89 min
Apr 15, 1:03 PM EDTMesoscale DiscussionSPC117 min
Apr 15, 1:50 PM EDTSevere Thunderstorm WatchSPC8 hr
Apr 15, 4:40 PM EDTMesoscale DiscussionSPC95 min
Apr 21, 4:04 AM EDTFreeze WatchLWX9 hr
Apr 21, 12:42 PM EDTFreeze WarningLWX19 hr
Apr 22, 10:45 AM EDTFreeze WarningLWX22 hr
May 1, 4:05 AM EDTDense Fog AdvisoryLWX4 hr
May 6, 3:27 AM EDTDense Fog AdvisoryLWX7 hr
May 17, 4:22 AM EDTFlood WatchLWX29 hr
May 20, 5:04 AM EDTDense Fog AdvisoryLWX5 hr
May 22, 3:00 PM EDTSevere Thunderstorm WatchSPC5 hr
May 23, 4:35 PM EDTSevere Thunderstorm WarningLWX40 min
May 26, 5:36 PM EDTMesoscale DiscussionSPC114 min
May 26, 6:08 PM EDTSevere Thunderstorm WatchSPC8 hr
May 26, 7:22 PM EDTMesoscale DiscussionSPC83 min
May 26, 8:17 PM EDTSevere Thunderstorm WarningLWX58 min
May 26, 9:05 PM EDTSevere Thunderstorm WarningLWX55 min
Jun 14, 7:13 PM EDTSevere Thunderstorm WarningLWX32 min
Jun 15, 1:24 AM EDTDense Fog AdvisoryLWX7 hr
Jun 17, 12:35 PM EDTHeat AdvisoryLWX31 hr
Jun 20, 4:59 PM EDTExcessive Heat WatchLWX19 hr
Jun 21, 12:27 PM EDTHeat AdvisoryLWX32 hr
Jun 26, 6:43 PM EDTMesoscale DiscussionSPC2 hr
Jun 26, 8:10 PM EDTSevere Thunderstorm WarningLWX35 min
Jun 29, 4:21 PM EDTSevere Thunderstorm WatchSPC6 hr
Jul 4, 3:52 AM EDTHeat AdvisoryLWX40 hr
Jul 8, 2:25 PM EDTHeat AdvisoryLWX30 hr
Jul 9, 4:15 AM EDTHeat AdvisoryLWX39 hr
Jul 10, 12:52 PM EDTMesoscale DiscussionSPC113 min
Jul 10, 1:37 PM EDTSevere Thunderstorm WatchSPC8 hr
Jul 13, 1:39 PM EDTExcessive Heat WatchLWX23 hr
Jul 14, 9:33 AM EDTExcessive Heat WatchLWX27 hr
Jul 14, 12:59 PM EDTExcessive Heat WarningLWX31 hr
Jul 15, 12:55 PM EDTExcessive Heat WarningLWX31 hr
Jul 15, 3:41 PM EDTMesoscale DiscussionSPC2 hr
Jul 16, 11:44 AM EDTHeat AdvisoryLWX32 hr
Jul 17, 2:11 PM EDTMesoscale DiscussionSPC79 min
Jul 17, 2:38 PM EDTSevere Thunderstorm WatchSPC7 hr
Jul 17, 2:43 PM EDTSevere Thunderstorm WarningLWX34 min
Jul 17, 3:12 PM EDTSevere Thunderstorm WarningLWX36 min
Jul 25, 12:25 PM EDTSevere Thunderstorm WarningLWX14 min
Jul 30, 12:39 PM EDTMesoscale DiscussionSPC2 hr
Jul 30, 3:10 PM EDTSevere Thunderstorm WarningLWX35 min
Jul 30, 3:39 PM EDTSevere Thunderstorm WarningLWX36 min
Jul 30, 3:45 PM EDTFlash Flood WarningLWX3 hr
Aug 1, 12:01 PM EDTHeat AdvisoryLWX32 hr
Aug 1, 2:53 PM EDTMesoscale DiscussionSPC2 hr
Aug 3, 12:56 PM EDTMesoscale DiscussionSPC94 min
Aug 7, 2:43 PM EDTFlood WatchLWX45 hr
Aug 8, 11:49 AM EDTRiver Flood WatchLWX30 hr
Aug 8, 6:37 PM EDTTornado WatchSPC12 hr
Aug 8, 8:38 PM EDTMesoscale DiscussionSPC2 hr
Aug 9, 4:19 AM EDTFlash Flood WarningLWX3 hr
Aug 9, 7:28 AM EDTAreal Flood WarningLWX7 hr
Aug 9, 5:08 PM EDTAreal Flood WarningLWX10 hr
Aug 18, 2:02 PM EDTSevere Thunderstorm WatchSPC8 hr
Aug 27, 2:36 PM EDTHeat AdvisoryLWX28 hr
Aug 29, 10:59 AM EDTFlood WatchLWX12 hr
Aug 29, 1:20 PM EDTMesoscale DiscussionSPC115 min
Aug 29, 3:54 PM EDTSevere Thunderstorm WatchSPC7 hr
Aug 29, 5:40 PM EDTMesoscale DiscussionSPC95 min
Aug 31, 1:27 PM EDTSevere Thunderstorm WatchSPC6 hr
Aug 31, 3:28 PM EDTMesoscale DiscussionSPC2 hr
Aug 31, 4:37 PM EDTSevere Thunderstorm Warning Considerable damage threatLWX38 min
Aug 31, 5:10 PM EDTSevere Thunderstorm Warning Considerable damage threatLWX35 min
Sep 8, 12:42 PM EDTFrost AdvisoryLWX20 hr
Sep 14, 5:37 AM EDTDense Fog AdvisoryLWX3 hr
Sep 20, 4:29 AM EDTDense Fog AdvisoryLWX5 hr
Sep 21, 2:37 PM EDTMesoscale DiscussionSPC2 hr
Sep 22, 2:47 AM EDTDense Fog AdvisoryLWX7 hr
Sep 29, 10:22 AM EDTFlood WatchLWX18 hr
Oct 5, 2:51 AM EDTDense Fog AdvisoryLWX6 hr
Oct 9, 2:08 PM EDTFrost AdvisoryLWX19 hr
Oct 10, 4:02 AM EDTFreeze WatchLWX9 hr
Oct 10, 12:49 PM EDTFreeze WarningLWX20 hr
Oct 14, 2:14 PM EDTFreeze WatchLWX12 hr
Oct 15, 2:20 AM EDTFreeze WarningLWX31 hr
Oct 16, 1:55 PM EDTFreeze WarningLWX19 hr
Nov 20, 1:59 AM ESTWind AdvisoryLWX23 hr
Dec 4, 4:22 AM ESTWind AdvisoryLWX44 hr
Dec 14, 12:26 PM ESTWinter Weather AdvisoryLWX40 hr
Dec 28, 8:54 PM ESTDense Fog 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 archive20232025

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.