Alert archive / West Virginia / Mason County

Weather alerts in Mason County, West Virginia, 2018

113 weather alerts in 2018, from the National Weather Service and the Storm Prediction Center. An alert counts here when it covered this county.

Mason County and its neighbors

Each county as a circle sized by its count in 2018. Tap one for its archive.

Alerts
113
Warnings
43
Watches
17
Advisories
19
Busiest month
February21 alerts
Busiest day
February 16, 20186 alerts

Over time

By month

Warning verification

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

Mason County, 2018

WarningsWith a reportFalse alarm ratioReportsInside a warningMean lead time
Tornado warnings00
Severe thunderstorm warnings10820%888%18 min
Flash flood warnings2150%0

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 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 5, 8:16 PM ESTWinter Weather AdvisoryRLX18 hr
Feb 6, 4:23 AM ESTWinter Weather AdvisoryRLX33 hr
Feb 6, 10:36 AM ESTFlood WatchRLX26 hr
Feb 6, 10:42 PM ESTMesoscale DiscussionSPC5 hr
Feb 7, 9:21 AM ESTSpecial Weather StatementRLX54 min
Feb 7, 10:07 AM ESTAreal Flood WarningRLX9 hr
Feb 9, 2:56 AM ESTFlood WatchRLX59 hr
Feb 13, 2:13 PM ESTFlood WatchRLX3 days
Feb 16, 7:26 AM ESTAreal Flood WarningRLX12 hr
Feb 16, 9:34 AM ESTAreal Flood WarningRLX15 hr
Feb 16, 11:24 AM ESTRiver Flood WarningRLX4 days
Feb 16, 11:24 AM ESTRiver Flood WarningRLX4 days
Feb 16, 11:24 AM ESTRiver Flood WarningRLX5 days
Feb 16, 11:24 AM ESTRiver Flood WarningRLX4 days
Feb 16, 9:17 PM ESTWinter Weather AdvisoryRLX31 hr
Feb 21, 3:06 PM ESTFlood WatchRLX4 days
Feb 23, 8:17 AM ESTSpecial Weather StatementRLX58 min
Feb 24, 11:23 AM ESTSpecial Weather StatementRLX112 min
Feb 24, 11:37 AM ESTAreal Flood WarningRLX6 hr
Feb 25, 8:03 AM ESTSpecial Weather StatementRLX4 hr
Feb 25, 10:02 AM ESTRiver Flood WarningRLX4 days
Mar 1, 3:27 AM ESTWind AdvisoryRLX35 hr
Mar 6, 10:00 AM ESTSpecial Weather StatementRLX15 min
Mar 8, 10:24 AM ESTSpecial Weather StatementRLX2 hr
Mar 13, 5:26 PM EDTSpecial Weather StatementRLX49 min
Mar 16, 3:56 AM EDTWinter Weather AdvisoryRLX33 hr
Mar 19, 3:39 PM EDTWinter Weather AdvisoryRLX55 hr
Mar 27, 1:32 PM EDTFlood WatchRLX68 hr
Apr 3, 2:24 PM EDTFlash Flood WatchRLX13 hr
Apr 3, 6:38 PM EDTMesoscale DiscussionSPC2 hr
Apr 3, 7:07 PM EDTSevere Thunderstorm WatchSPC6 hr
Apr 3, 8:15 PM EDTSevere Thunderstorm WarningRLX45 min
Apr 3, 8:42 PM EDTSevere Thunderstorm WarningRLX33 min
Apr 4, 10:59 AM EDTRiver Flood WarningRLX3 days
Apr 4, 10:59 AM EDTRiver Flood WarningRLX3 days
Apr 4, 1:56 PM EDTRiver Flood WarningRLX63 hr
Apr 5, 4:11 AM EDTWinter Storm WatchRLX24 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 16, 3:03 AM EDTFreeze WarningRLX31 hr
Apr 17, 11:24 AM EDTRiver Flood WarningRLX48 hr
Apr 17, 4:58 PM EDTFreeze WarningRLX16 hr
Apr 18, 10:38 PM EDTSpecial Weather StatementRLX37 min
Apr 18, 11:18 PM EDTSpecial Weather StatementRLX42 min
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
May 21, 3:30 PM EDTMesoscale DiscussionSPC60 min
May 21, 5:14 PM EDTSevere Thunderstorm WarningRLX31 min
May 26, 7:15 PM EDTSpecial Weather StatementRLX3 hr
May 28, 4:53 PM EDTSpecial Weather StatementRLX37 min
May 28, 5:30 PM EDTSpecial Weather StatementRLX45 min
May 30, 5:14 PM EDTSpecial Weather StatementRLX31 min
May 30, 5:40 PM EDTSevere Thunderstorm WarningRLX35 min
May 31, 4:10 PM EDTSevere Thunderstorm WarningRLX20 min
May 31, 5:57 PM EDTSpecial Weather StatementRLX33 min
May 31, 6:32 PM EDTSpecial Weather StatementRLX43 min
Jun 13, 9:19 PM EDTSpecial Weather StatementRLX41 min
Jun 17, 5:49 PM EDTSpecial Weather StatementRLX26 min
Jun 17, 6:20 PM EDTSpecial Weather StatementRLX25 min
Jun 18, 2:44 AM EDTHeat AdvisoryRLX17 hr
Jun 21, 3:41 AM EDTFlash Flood WatchRLX46 hr
Jun 22, 7:49 PM EDTFlash Flood WarningRLX10 hr
Jun 23, 5:18 AM EDTAreal Flood WarningRLX9 hr
Jul 1, 2:09 PM EDTHeat AdvisoryRLX6 hr
Jul 1, 5:39 PM EDTSevere Thunderstorm WarningRLX36 min
Jul 1, 6:06 PM EDTSevere Thunderstorm WarningRLX24 min
Jul 1, 6:13 PM EDTSevere Thunderstorm WarningRLX32 min
Jul 3, 4:15 AM EDTExcessive Heat WatchRLX10 hr
Jul 3, 4:15 AM EDTHeat AdvisoryRLX16 hr
Jul 3, 1:56 PM EDTExcessive Heat WarningRLX30 hr
Jul 5, 4:27 AM EDTHeat AdvisoryRLX14 hr
Jul 5, 10:32 AM EDTFlash Flood WatchRLX14 hr
Jul 20, 6:08 PM EDTSpecial Weather StatementRLX37 min
Jul 20, 7:24 PM EDTMesoscale DiscussionSPC96 min
Jul 31, 2:10 PM EDTSevere Thunderstorm WarningRLX35 min
Aug 26, 6:04 PM EDTSpecial Weather StatementRLX26 min
Sep 4, 3:02 AM EDTHeat AdvisoryRLX16 hr
Sep 7, 8:02 PM EDTFlash Flood WarningRLX93 min
Sep 8, 3:34 AM EDTFlood WatchRLX49 hr
Sep 9, 9:43 AM EDTAreal Flood WarningRLX21 hr
Sep 9, 1:34 PM EDTMesoscale DiscussionSPC86 min
Sep 9, 5:10 PM EDTAreal Flood WarningRLX6 hr
Sep 9, 5:21 PM EDTAreal Flood WarningRLX6 hr
Sep 9, 11:16 PM EDTAreal Flood WarningRLX6 hr
Sep 11, 1:33 PM EDTRiver Flood WarningRLX47 hr
Sep 22, 3:09 PM EDTFlash Flood WatchRLX4 days
Oct 17, 3:18 AM EDTFrost AdvisoryRLX31 hr
Oct 18, 2:02 PM EDTFreeze WarningRLX20 hr
Oct 20, 3:49 PM EDTWind AdvisoryRLX14 hr
Oct 28, 3:16 PM EDTSpecial Weather StatementRLX29 min
Oct 28, 6:35 PM EDTSevere Thunderstorm WarningRLX25 min
Nov 2, 12:01 AM EDTSpecial Weather StatementRLX29 min
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, 4:18 PM ESTSpecial Weather StatementRLX117 min
Nov 27, 7:03 PM ESTSpecial Weather StatementRLX3 hr
Dec 15, 10:47 AM ESTFlood WatchRLX23 hr
Dec 20, 11:10 AM ESTFlood WatchRLX31 hr
Dec 20, 7:22 PM ESTAreal Flood WarningRLX3 hr
Dec 20, 8:14 PM ESTAreal Flood WarningRLX39 hr
Dec 21, 11:08 AM ESTSpecial Weather StatementRLX3 hr
Dec 21, 2:12 PM ESTSpecial Weather StatementRLX3 hr
Dec 21, 2:19 PM ESTSpecial Weather StatementRLX3 hr
Dec 22, 11:48 AM ESTRiver Flood WarningRLX53 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 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.