Alert archive / North Carolina / Clay County

Weather alerts in Clay County, North Carolina, 2018

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

Clay County and its neighbors

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

Alerts
87
Warnings
20
Watches
13
Advisories
26
Busiest month
June15 alerts
Busiest day
September 10, 20184 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 1 tornado warnings covering Clay County in 2018 had a tornado report inside them.

Clay County, 2018

WarningsWith a reportFalse alarm ratioReportsInside a warningMean lead time
Tornado warnings10100%0
Severe thunderstorm warnings880%560%24 min
Flash flood warnings10100%0

Each office's whole area, 2018

WarningsWith a reportFalse alarm ratioReportsInside a warningMean lead time
NWS Morristown, TN: tornado warnings80100%0
NWS Morristown, TN: severe thunderstorm warnings21016223%26784%22 min
NWS Morristown, TN: flash flood warnings372727%3583%73 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 1, 4:14 AM ESTWind Chill AdvisoryMRX30 hr
Jan 3, 4:27 AM ESTWind Chill AdvisoryMRX32 hr
Jan 4, 3:36 AM ESTWind Chill AdvisoryMRX31 hr
Jan 7, 4:06 AM ESTWinter Weather AdvisoryMRX37 hr
Jan 15, 10:08 AM ESTWinter Weather AdvisoryMRX45 hr
Jan 17, 1:29 PM ESTWind Chill AdvisoryMRX20 hr
Feb 3, 3:38 AM ESTWinter Weather AdvisoryMRX30 hr
Feb 9, 3:46 AM ESTFlood WatchMRX63 hr
Feb 10, 10:03 PM ESTAreal Flood AdvisoryMRX10 hr
Feb 25, 5:42 AM ESTSpecial Weather StatementMRX63 min
Feb 27, 4:03 AM ESTFlood WatchMRX63 hr
Feb 28, 8:51 PM ESTAreal Flood WarningMRX6 hr
Mar 17, 6:06 PM EDTMesoscale DiscussionSPC114 min
Mar 17, 7:55 PM EDTSevere Thunderstorm WarningMRX50 min
Mar 17, 8:14 PM EDTTornado WarningMRX46 min
Mar 17, 8:41 PM EDTSevere Thunderstorm WarningMRX19 min
Mar 17, 8:54 PM EDTSevere Thunderstorm WarningMRX36 min
Apr 4, 2:00 AM EDTMesoscale DiscussionSPC105 min
Apr 4, 2:29 AM EDTSpecial Weather StatementMRX61 min
Apr 10, 3:25 PM EDTFrost AdvisoryMRX18 hr
Apr 15, 4:12 AM EDTFreeze WatchMRX11 hr
Apr 15, 3:39 PM EDTFreeze WarningMRX43 hr
Apr 15, 5:35 PM EDTAreal Flood AdvisoryMRX102 min
Apr 16, 4:28 AM EDTWind AdvisoryMRX11 hr
Apr 18, 2:49 PM EDTFreeze WatchMRX13 hr
Apr 19, 3:59 AM EDTFreeze WarningMRX29 hr
Apr 22, 9:40 AM EDTWind AdvisoryMRX40 hr
Apr 29, 3:26 AM EDTFrost AdvisoryMRX30 hr
May 14, 4:49 PM EDTSpecial Weather StatementMRX41 min
May 14, 5:45 PM EDTSpecial Weather StatementMRX45 min
May 14, 5:49 PM EDTSevere Thunderstorm WarningMRX41 min
May 27, 4:25 AM EDTFlash Flood WatchMRX40 hr
May 28, 4:20 AM EDTFlash Flood WatchMRX64 hr
May 29, 2:38 PM EDTMesoscale DiscussionSPC97 min
May 30, 7:51 AM EDTAreal Flood WarningMRX18 hr
May 31, 2:57 AM EDTAreal Flood WarningMRX36 hr
May 31, 2:28 PM EDTSpecial Weather StatementMRX32 min
May 31, 3:38 PM EDTFlash Flood WarningMRX69 min
Jun 1, 8:27 PM EDTAreal Flood WarningMRX19 hr
Jun 3, 3:24 PM EDTMesoscale DiscussionSPC66 min
Jun 11, 5:25 PM EDTSpecial Weather StatementGSP35 min
Jun 11, 5:33 PM EDTSpecial Weather StatementGSP27 min
Jun 11, 6:04 PM EDTSpecial Weather StatementGSP26 min
Jun 16, 2:16 PM EDTSpecial Weather StatementMRX29 min
Jun 16, 3:16 PM EDTSpecial Weather StatementMRX29 min
Jun 23, 3:24 PM EDTSevere Thunderstorm WarningMRX51 min
Jun 24, 3:11 PM EDTSpecial Weather StatementMRX49 min
Jun 24, 5:53 PM EDTMesoscale DiscussionSPC97 min
Jun 25, 12:29 PM EDTMesoscale DiscussionSPC61 min
Jun 25, 3:31 PM EDTSevere Thunderstorm WarningMRX44 min
Jun 26, 7:17 PM EDTSevere Thunderstorm WarningMRX58 min
Jun 27, 1:45 PM EDTSpecial Weather StatementMRX45 min
Jun 27, 2:29 PM EDTMesoscale DiscussionSPC3 hr
Jul 5, 5:57 PM EDTSpecial Weather StatementMRX33 min
Jul 5, 6:40 PM EDTSpecial Weather StatementMRX35 min
Jul 15, 9:53 PM EDTAreal Flood AdvisoryMRX2 hr
Jul 21, 3:00 AM EDTSevere Thunderstorm WatchSPC7 hr
Jul 21, 3:37 PM EDTMesoscale DiscussionSPC2 hr
Jul 31, 3:35 AM EDTFlash Flood WatchMRX3 days
Aug 8, 4:41 PM EDTSpecial Weather StatementMRX49 min
Sep 9, 8:11 PM EDTSpecial Weather StatementMRX49 min
Sep 9, 9:02 PM EDTSpecial Weather StatementMRX43 min
Sep 9, 9:47 PM EDTSpecial Weather StatementMRX28 min
Sep 9, 10:21 PM EDTAreal Flood AdvisoryMRX3 hr
Sep 26, 4:23 AM EDTFlash Flood WatchMRX40 hr
Oct 19, 3:16 PM EDTFreeze WatchMRX12 hr
Oct 20, 3:03 AM EDTFreeze WarningMRX31 hr
Oct 20, 2:53 PM EDTWind AdvisoryMRX13 hr
Oct 21, 3:35 AM EDTFreeze WarningMRX29 hr
Oct 25, 3:42 PM EDTWind AdvisoryMRX24 hr
Oct 28, 3:49 AM EDTWind AdvisoryMRX24 hr
Oct 29, 9:32 PM EDTFrost AdvisoryMRX11 hr
Nov 5, 3:42 AM ESTWind AdvisoryMRX30 hr
Nov 6, 2:40 AM ESTMesoscale DiscussionSPC65 min
Nov 6, 3:15 AM ESTTornado WatchSPC5 hr
Nov 6, 5:14 AM ESTSevere Thunderstorm WarningMRX61 min
Nov 6, 6:13 AM ESTSpecial Weather StatementMRX47 min
Nov 8, 11:04 AM ESTFreeze WarningMRX47 hr
Dec 6, 3:24 PM ESTWinter Storm WatchMRX36 hr
Dec 7, 3:52 PM ESTWinter Storm WarningMRX59 hr
Dec 8, 3:10 PM ESTWinter Weather AdvisoryMRX43 hr
Dec 17, 4:45 AM ESTDense Fog AdvisoryMRX5 hr
Dec 26, 4:02 AM ESTWind AdvisoryMRX57 hr
Dec 26, 3:42 PM ESTFlash Flood WatchMRX48 hr
Dec 28, 2:49 AM ESTAreal Flood AdvisoryMRX6 hr
Dec 28, 9:11 AM ESTAreal Flood AdvisoryMRX5 hr
Dec 28, 9:57 PM ESTDense Fog AdvisoryMRX10 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.