Alert archive / West Virginia / Harrison County

Weather alerts in Harrison County, West Virginia, 2017

96 weather alerts in 2017, from the National Weather Service and the Storm Prediction Center. An alert counts here when it covered this county.

Harrison County and its neighbors

Each county as a circle sized by its count in 2017. Tap one for its archive.

Alerts
96
Warnings
22
Watches
16
Advisories
12
Busiest month
July29 alerts
Busiest day
July 22, 201710 alerts

Over time

By month

Warning verification

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

0 of 2 tornado warnings covering Harrison County in 2017 had a tornado report inside them; 0 of 1 tornado reports fell inside a warning.

Harrison County, 2017

WarningsWith a reportFalse alarm ratioReportsInside a warningMean lead time
Tornado warnings20100%10%
Severe thunderstorm warnings7614%1650%13 min
Flash flood warnings8625%7100%143 min

Each office's whole area, 2017

WarningsWith a reportFalse alarm ratioReportsInside a warningMean lead time
NWS Charleston, WV: tornado warnings19384%850%6 min
NWS Charleston, WV: severe thunderstorm warnings1128128%26467%18 min
NWS Charleston, WV: flash flood warnings563734%11388%108 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, 3:10 PM ESTWinter Weather AdvisoryRLX37 hr
Jan 13, 3:33 AM ESTFreezing Rain AdvisoryRLX35 hr
Feb 8, 4:46 AM ESTWinter Weather AdvisoryRLX38 hr
Feb 12, 7:08 PM ESTSpecial Weather StatementRLX112 min
Feb 12, 9:04 PM ESTSpecial Weather StatementRLX56 min
Feb 12, 9:05 PM ESTSpecial Weather StatementRLX55 min
Feb 28, 11:28 AM ESTFlash Flood WatchRLX28 hr
Mar 1, 4:23 AM ESTSpecial Weather StatementRLX37 min
Mar 1, 6:46 AM ESTSevere Thunderstorm WarningRLX29 min
Mar 1, 6:48 AM ESTSevere Thunderstorm WatchSPC5 hr
Mar 1, 6:58 AM ESTSpecial Weather StatementRLX32 min
Mar 1, 9:09 AM ESTFlash Flood WarningRLX5 hr
Mar 1, 10:32 AM ESTSpecial Weather StatementRLX43 min
Mar 1, 12:23 PM ESTAreal Flood WarningRLX8 hr
Mar 1, 6:20 PM ESTSpecial Weather StatementRLX25 min
Mar 1, 11:34 PM ESTSpecial Weather StatementRLX3 hr
Mar 13, 4:05 AM EDTWinter Weather AdvisoryRLX46 hr
Mar 17, 9:03 AM EDTFreezing Rain AdvisoryRLX3 hr
Mar 17, 4:55 PM EDTSpecial Weather StatementRLX50 min
Mar 22, 10:08 AM EDTSpecial Weather StatementRLX7 min
Apr 7, 3:42 AM EDTFreeze WarningRLX29 hr
Apr 15, 6:41 PM EDTSpecial Weather StatementRLX34 min
Apr 20, 2:40 PM EDTMesoscale DiscussionSPC65 min
Apr 20, 3:20 PM EDTSpecial Weather StatementRLX55 min
Apr 29, 4:55 AM EDTSpecial Weather StatementRLX35 min
Apr 30, 2:58 PM EDTMesoscale DiscussionSPC2 hr
May 1, 11:59 AM EDTMesoscale DiscussionSPC2 hr
May 1, 12:32 PM EDTTornado WatchSPC4 hr
May 1, 2:27 PM EDTSpecial Weather StatementRLX33 min
May 1, 2:44 PM EDTSevere Thunderstorm WarningRLX18 min
May 2, 4:40 AM EDTWind AdvisoryRLX13 hr
May 5, 4:07 PM EDTMesoscale DiscussionSPC113 min
May 5, 11:36 PM EDTFlash Flood WarningRLX4 hr
May 7, 2:44 AM EDTFrost AdvisoryRLX30 hr
May 8, 1:49 PM EDTFrost AdvisoryRLX19 hr
May 19, 5:50 PM EDTMesoscale DiscussionSPC55 min
May 27, 4:14 AM EDTFlash Flood WatchRLX39 hr
May 27, 3:20 PM EDTSevere Thunderstorm WarningRLX40 min
May 27, 4:11 PM EDTSevere Thunderstorm WatchSPC6 hr
May 28, 3:15 AM EDTSpecial Weather StatementRLX45 min
Jun 1, 12:48 AM EDTSpecial Weather StatementRLX27 min
Jun 13, 12:18 PM EDTMesoscale DiscussionSPC2 hr
Jun 14, 2:20 PM EDTMesoscale DiscussionSPC2 hr
Jun 15, 4:01 PM EDTMesoscale DiscussionSPC119 min
Jun 22, 12:17 PM EDTFlash Flood WatchRLX40 hr
Jun 23, 2:20 PM EDTSevere Thunderstorm WatchSPC8 hr
Jun 23, 4:53 PM EDTMesoscale DiscussionSPC2 hr
Jun 23, 7:32 PM EDTTornado WarningRLX28 min
Jun 23, 8:00 PM EDTSpecial Weather StatementRLX45 min
Jun 23, 9:24 PM EDTFlash Flood WarningRLX3 hr
Jul 6, 10:03 AM EDTFlash Flood WatchRLX12 hr
Jul 7, 1:07 PM EDTMesoscale DiscussionSPC53 min
Jul 7, 1:27 PM EDTSevere Thunderstorm WatchSPC8 hr
Jul 7, 3:35 PM EDTMesoscale DiscussionSPC85 min
Jul 7, 4:14 PM EDTSpecial Weather StatementRLX31 min
Jul 10, 3:08 PM EDTMesoscale DiscussionSPC2 hr
Jul 10, 6:25 PM EDTSevere Thunderstorm WarningRLX28 min
Jul 10, 6:32 PM EDTTornado WarningRLX28 min
Jul 10, 6:58 PM EDTSevere Thunderstorm WarningRLX32 min
Jul 13, 9:22 AM EDTFlash Flood WatchRLX33 hr
Jul 21, 11:03 AM EDTMesoscale DiscussionSPC57 min
Jul 21, 12:57 PM EDTSpecial Weather StatementRLX33 min
Jul 22, 8:34 AM EDTMesoscale DiscussionSPC86 min
Jul 22, 9:59 AM EDTSpecial Weather StatementRLX31 min
Jul 22, 11:59 AM EDTFlash Flood WatchRLX28 hr
Jul 22, 2:21 PM EDTSpecial Weather StatementRLX39 min
Jul 22, 2:50 PM EDTFlash Flood WarningRLX4 hr
Jul 22, 3:18 PM EDTMesoscale DiscussionSPC2 hr
Jul 22, 3:49 PM EDTSevere Thunderstorm WarningRLX41 min
Jul 22, 3:54 PM EDTSevere Thunderstorm WatchSPC6 hr
Jul 22, 4:21 PM EDTFlash Flood WarningRLX4 hr
Jul 22, 6:16 PM EDTSevere Thunderstorm WarningRLX44 min
Jul 24, 2:17 PM EDTMesoscale DiscussionSPC118 min
Jul 27, 1:37 PM EDTFlash Flood WatchRLX30 hr
Jul 28, 8:05 PM EDTFlash Flood WatchRLX12 hr
Jul 29, 12:23 AM EDTFlash Flood WarningRLX6 hr
Jul 29, 1:23 AM EDTFlash Flood WarningRLX4 hr
Jul 29, 3:09 AM EDTFlash Flood WarningRLX3 hr
Jul 29, 6:03 AM EDTAreal Flood WarningRLX15 hr
Aug 4, 11:38 AM EDTMesoscale DiscussionSPC2 hr
Aug 19, 6:35 PM EDTSpecial Weather StatementRLX25 min
Aug 19, 8:16 PM EDTMesoscale DiscussionSPC59 min
Aug 22, 12:39 PM EDTSevere Thunderstorm WatchSPC8 hr
Aug 22, 2:44 PM EDTMesoscale DiscussionSPC91 min
Aug 22, 4:39 PM EDTMesoscale DiscussionSPC66 min
Aug 22, 9:34 PM EDTSpecial Weather StatementRLX56 min
Sep 5, 7:25 AM EDTSpecial Weather StatementRLX65 min
Oct 16, 3:12 AM EDTFreeze WatchRLX8 hr
Oct 16, 11:10 AM EDTFreeze WarningRLX23 hr
Oct 17, 2:34 PM EDTFrost AdvisoryRLX18 hr
Oct 25, 3:26 AM EDTFrost AdvisoryRLX31 hr
Oct 26, 2:43 PM EDTFrost AdvisoryRLX18 hr
Oct 29, 2:44 PM EDTFreeze WarningRLX19 hr
Nov 5, 10:49 PM ESTSpecial Weather StatementRLX41 min
Nov 6, 5:54 AM ESTSpecial Weather StatementRLX81 min
Dec 29, 1:50 PM ESTWinter Weather AdvisoryRLX27 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 archive20162018

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.