Alert archive / West Virginia / Harrison County

Weather alerts in Harrison County, West Virginia, 2018

109 weather alerts in 2018, 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 2018. Tap one for its archive.

Alerts
109
Warnings
33
Watches
20
Advisories
21
Busiest month
April23 alerts
Busiest day
October 2, 20187 alerts

Over time

By month

Warning verification

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

Harrison County, 2018

WarningsWith a reportFalse alarm ratioReportsInside a warningMean lead time
Tornado warnings00
Severe thunderstorm warnings7443%850%10 min
Flash flood warnings9633%875%65 min

Each office's whole area, 2018

WarningsWith a reportFalse alarm ratioReportsInside a warningMean lead time
NWS Charleston, WV: tornado warnings2150%333%4 min
NWS Charleston, WV: severe thunderstorm warnings1247341%18666%16 min
NWS Charleston, WV: flash flood warnings804840%16374%60 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 3, 3:27 AM ESTWind Chill AdvisoryRLX58 hr
Jan 5, 1:29 PM ESTWind Chill AdvisoryRLX26 hr
Jan 7, 3:45 AM ESTWinter Weather AdvisoryRLX43 hr
Jan 11, 11:21 AM ESTFlood WatchRLX23 hr
Jan 11, 4:40 PM ESTWinter Weather AdvisoryRLX41 hr
Jan 12, 7:04 PM ESTMesoscale DiscussionSPC6 hr
Jan 15, 5:43 AM ESTWinter Weather AdvisoryRLX48 hr
Feb 6, 4:23 AM ESTWinter Weather AdvisoryRLX33 hr
Feb 6, 10:36 AM ESTFlood WatchRLX26 hr
Feb 9, 2:56 AM ESTFlood WatchRLX59 hr
Feb 13, 2:13 PM ESTFlood WatchRLX3 days
Feb 16, 1:22 AM ESTAreal Flood WarningRLX36 hr
Feb 16, 8:18 AM ESTAreal Flood WarningRLX24 hr
Feb 16, 6:34 PM ESTRiver Flood WarningRLX14 hr
Feb 16, 9:17 PM ESTWinter Weather AdvisoryRLX31 hr
Feb 24, 11:52 AM ESTAreal Flood WarningRLX5 hr
Feb 24, 1:21 PM ESTSpecial Weather StatementRLX114 min
Mar 1, 3:27 AM ESTWind AdvisoryRLX35 hr
Mar 1, 7:08 PM ESTSpecial Weather StatementRLX67 min
Mar 6, 10:00 AM ESTSpecial Weather StatementRLX15 min
Mar 7, 3:36 PM ESTSpecial Weather StatementRLX54 min
Mar 7, 4:31 PM ESTSpecial Weather StatementRLX59 min
Mar 8, 9:06 AM ESTSpecial Weather StatementRLX54 min
Mar 8, 10:19 AM ESTSpecial Weather StatementRLX116 min
Mar 8, 2:29 PM ESTSpecial Weather StatementRLX61 min
Mar 13, 10:39 AM EDTWinter Weather AdvisoryRLX27 hr
Mar 16, 3:56 AM EDTWinter Weather AdvisoryRLX33 hr
Mar 19, 3:39 PM EDTWinter Storm WatchRLX13 hr
Mar 19, 3:39 PM EDTWinter Weather AdvisoryRLX55 hr
Mar 22, 6:17 AM EDTSpecial Weather StatementRLX118 min
Mar 27, 1:32 PM EDTFlood WatchRLX68 hr
Apr 1, 2:12 PM EDTWinter Weather AdvisoryRLX14 hr
Apr 3, 7:16 AM EDTFlash Flood WatchRLX8 hr
Apr 3, 12:43 PM EDTSpecial Weather StatementRLX2 hr
Apr 3, 2:24 PM EDTFlash Flood WatchRLX13 hr
Apr 3, 5:13 PM EDTAreal Flood WarningRLX18 hr
Apr 3, 6:38 PM EDTMesoscale DiscussionSPC2 hr
Apr 3, 7:07 PM EDTSevere Thunderstorm WatchSPC6 hr
Apr 3, 10:06 PM EDTSpecial Weather StatementRLX24 min
Apr 3, 10:13 PM EDTSevere Thunderstorm WarningRLX34 min
Apr 4, 3:14 AM EDTWind AdvisoryRLX16 hr
Apr 11, 11:27 AM EDTFire Weather WatchRLX33 hr
Apr 12, 3:58 AM EDTRed Flag WarningRLX16 hr
Apr 13, 8:49 AM EDTRed Flag WarningRLX11 hr
Apr 14, 2:18 PM EDTFlash Flood WatchRLX38 hr
Apr 15, 10:19 PM EDTAreal Flood WarningRLX24 hr
Apr 16, 3:03 AM EDTFreeze WarningRLX31 hr
Apr 16, 9:53 AM EDTRiver Flood WarningRLX18 hr
Apr 17, 4:58 PM EDTFreeze WarningRLX16 hr
Apr 19, 3:05 AM EDTFreeze WarningRLX31 hr
Apr 20, 2:13 PM EDTFreeze WarningRLX20 hr
Apr 28, 3:08 AM EDTFrost AdvisoryRLX30 hr
Apr 29, 9:39 AM EDTFreeze WarningRLX23 hr
Apr 30, 7:18 PM EDTFrost AdvisoryRLX14 hr
May 12, 1:51 PM EDTMesoscale DiscussionSPC2 hr
May 12, 2:47 PM EDTSevere Thunderstorm WatchSPC8 hr
May 12, 5:05 PM EDTMesoscale DiscussionSPC115 min
May 13, 1:56 PM EDTMesoscale DiscussionSPC2 hr
May 13, 4:28 PM EDTSevere Thunderstorm WatchSPC7 hr
May 13, 7:00 PM EDTMesoscale DiscussionSPC60 min
May 14, 11:56 AM EDTMesoscale DiscussionSPC64 min
May 14, 12:29 PM EDTSevere Thunderstorm WatchSPC9 hr
May 14, 3:26 PM EDTMesoscale DiscussionSPC2 hr
May 15, 7:34 PM EDTSpecial Weather StatementRLX26 min
May 15, 7:59 PM EDTSevere Thunderstorm WarningRLX46 min
May 16, 2:23 PM EDTFlood WatchRLX59 hr
May 21, 3:30 PM EDTMesoscale DiscussionSPC60 min
May 21, 6:10 PM EDTSpecial Weather StatementRLX50 min
Jun 20, 2:52 PM EDTSpecial Weather StatementRLX38 min
Jun 20, 3:23 PM EDTMesoscale DiscussionSPC2 hr
Jun 21, 3:41 AM EDTFlash Flood WatchRLX46 hr
Jun 22, 2:08 PM EDTFlash Flood WarningRLX3 hr
Jun 22, 2:29 PM EDTFlash Flood WarningRLX3 hr
Jun 27, 5:06 PM EDTSpecial Weather StatementRLX39 min
Jun 27, 7:50 PM EDTSpecial Weather StatementRLX55 min
Jun 27, 10:39 PM EDTFlash Flood WarningRLX7 hr
Jul 1, 2:09 PM EDTHeat AdvisoryRLX6 hr
Jul 3, 1:56 PM EDTHeat AdvisoryRLX30 hr
Jul 4, 6:51 PM EDTSevere Thunderstorm WarningRLX24 min
Jul 4, 7:29 PM EDTFlash Flood WarningRLX2 hr
Jul 5, 10:32 AM EDTFlash Flood WatchRLX14 hr
Jul 15, 4:55 PM EDTFlash Flood WarningRLX3 hr
Aug 1, 3:40 AM EDTFlash Flood WatchRLX62 hr
Aug 3, 11:34 AM EDTFlash Flood WarningRLX3 hr
Aug 7, 1:09 PM EDTSpecial Weather StatementRLX51 min
Aug 10, 9:46 PM EDTFlash Flood WarningRLX3 hr
Aug 13, 1:57 PM EDTMesoscale DiscussionSPC3 hr
Aug 21, 12:45 PM EDTMesoscale DiscussionSPC3 hr
Aug 21, 2:16 PM EDTMesoscale DiscussionSPC119 min
Sep 8, 3:34 AM EDTFlood WatchRLX49 hr
Sep 9, 8:39 AM EDTAreal Flood WarningRLX6 hr
Sep 11, 2:50 AM EDTRiver Flood WarningRLX18 days
Sep 22, 3:09 PM EDTFlash Flood WatchRLX4 days
Oct 2, 4:41 PM EDTSevere Thunderstorm WarningRLX34 min
Oct 2, 5:08 PM EDTSpecial Weather StatementRLX37 min
Oct 2, 5:29 PM EDTSpecial Weather StatementRLX31 min
Oct 2, 5:51 PM EDTSevere Thunderstorm WarningRLX39 min
Oct 2, 6:11 PM EDTFlash Flood WarningRLX3 hr
Oct 2, 6:26 PM EDTFlash Flood WarningRLX3 hr
Oct 2, 6:29 PM EDTSevere Thunderstorm WarningRLX35 min
Oct 17, 3:18 AM EDTFrost AdvisoryRLX31 hr
Oct 18, 2:02 PM EDTFreeze WarningRLX20 hr
Oct 20, 3:49 PM EDTWind AdvisoryRLX14 hr
Nov 14, 3:51 AM ESTWinter Weather AdvisoryRLX31 hr
Nov 15, 3:18 AM ESTMesoscale DiscussionSPC6 hr
Nov 15, 6:12 AM ESTWinter Weather AdvisoryRLX3 hr
Nov 27, 4:30 PM ESTSpecial Weather StatementRLX3 hr
Nov 27, 7:03 PM ESTSpecial Weather StatementRLX3 hr
Dec 1, 11:24 PM ESTSevere Thunderstorm WarningRLX36 min

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.