Alert archive / Mississippi / Clay County

Weather alerts in Clay County, Mississippi, 2015

122 weather alerts in 2015, 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 2015. Tap one for its archive.

Alerts
122
Warnings
27
Watches
19
Advisories
19
Busiest month
July19 alerts
Busiest day
November 18, 20155 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 2015 had a tornado report inside them.

Clay County, 2015

WarningsWith a reportFalse alarm ratioReportsInside a warningMean lead time
Tornado warnings10100%0
Severe thunderstorm warnings12467%0
Flash flood warnings20100%0

Each office's whole area, 2015

WarningsWith a reportFalse alarm ratioReportsInside a warningMean lead time
NWS Jackson, MS: tornado warnings531866%6781%17 min
NWS Jackson, MS: severe thunderstorm warnings44122349%52675%22 min
NWS Jackson, MS: flash flood warnings954256%11376%67 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, Central Time. Each opens its own page with the text, the map, the radar and the sounding.

IssuedProductOfficeLasted
Jan 2, 3:01 PM CSTFlash Flood WatchJAN33 hr
Jan 3, 11:04 AM CSTTornado WatchSPC7 hr
Jan 3, 2:54 PM CSTMesoscale DiscussionSPC96 min
Jan 3, 3:34 PM CSTSevere Thunderstorm WarningJAN41 min
Jan 3, 4:02 PM CSTTornado WarningJAN43 min
Jan 5, 7:56 AM CSTRiver Flood WarningJAN22 hr
Jan 5, 7:39 PM CSTRiver Flood WarningJAN10 hr
Jan 6, 5:05 AM CSTHard Freeze WatchJAN22 hr
Jan 6, 3:14 PM CSTHard Freeze WarningJAN51 hr
Jan 7, 3:23 AM CSTWind Chill AdvisoryJAN30 hr
Jan 7, 2:49 PM CSTWind AdvisoryJAN3 hr
Feb 14, 4:39 AM CSTWinter Storm WatchJAN34 hr
Feb 15, 2:49 PM CSTWinter Weather AdvisoryJAN30 hr
Feb 20, 8:24 AM CSTWinter Weather AdvisoryJAN3 hr
Feb 20, 11:10 AM CSTWinter Weather AdvisoryJAN110 min
Feb 21, 5:59 PM CSTFlash Flood WarningJAN3 hr
Feb 22, 4:21 AM CSTFreezing Rain AdvisoryJAN53 hr
Feb 22, 3:40 PM CSTWinter Weather AdvisoryJAN32 hr
Feb 23, 3:16 PM CSTWinter Storm WatchJAN24 hr
Feb 24, 3:06 PM CSTWinter Storm WarningJAN31 hr
Feb 25, 11:17 AM CSTMesoscale DiscussionSPC4 hr
Mar 2, 1:54 AM CSTDense Fog AdvisoryJAN8 hr
Mar 2, 2:39 PM CSTDense Fog AdvisoryJAN18 hr
Mar 2, 3:26 PM CSTWinter Storm WatchJAN48 hr
Mar 4, 3:35 AM CSTWinter Storm WarningJAN35 hr
Mar 5, 4:03 AM CSTMesoscale DiscussionSPC5 hr
Mar 8, 8:23 PM CDTRiver Flood WarningJAN5 days
Mar 31, 1:45 PM CDTSevere Thunderstorm WatchSPC5 hr
Mar 31, 4:32 PM CDTMesoscale DiscussionSPC58 min
Apr 3, 3:57 PM CDTMesoscale DiscussionSPC93 min
Apr 3, 7:57 PM CDTSpecial Weather StatementJAN48 min
Apr 3, 8:18 PM CDTSevere Thunderstorm WarningJAN43 min
Apr 14, 5:35 PM CDTSpecial Weather StatementJAN25 min
Apr 16, 4:23 PM CDTSpecial Weather StatementJAN37 min
Apr 16, 4:43 PM CDTSpecial Weather StatementJAN32 min
Apr 19, 8:02 PM CDTTornado WatchSPC5 hr
Apr 20, 12:18 AM CDTSevere Thunderstorm WarningJAN27 min
Apr 20, 12:37 AM CDTSpecial Weather StatementJAN38 min
Apr 25, 12:50 AM CDTTornado WatchSPC6 hr
Apr 25, 2:07 AM CDTMesoscale DiscussionSPC83 min
May 16, 6:13 PM CDTSpecial Weather StatementJAN32 min
May 24, 3:54 PM CDTSevere Thunderstorm WarningJAN30 min
May 25, 8:09 AM CDTSpecial Weather StatementJAN36 min
May 27, 12:43 PM CDTSevere Thunderstorm WatchSPC4 hr
May 27, 2:31 PM CDTSpecial Weather StatementJAN29 min
May 27, 3:12 PM CDTMesoscale DiscussionSPC93 min
May 28, 8:28 PM CDTRiver Flood WarningJAN23 hr
May 30, 5:16 PM CDTMesoscale DiscussionSPC59 min
May 31, 5:20 PM CDTSpecial Weather StatementJAN25 min
Jun 8, 4:54 PM CDTMesoscale DiscussionSPC96 min
Jun 9, 1:22 AM CDTSpecial Weather StatementJAN23 min
Jun 11, 1:21 PM CDTSpecial Weather StatementJAN39 min
Jun 13, 4:49 PM CDTSpecial Weather StatementJAN41 min
Jun 19, 5:43 PM CDTSpecial Weather StatementJAN32 min
Jun 23, 2:42 PM CDTHeat AdvisoryJAN45 hr
Jun 24, 12:38 AM CDTSpecial Weather StatementJAN37 min
Jun 24, 1:17 AM CDTSpecial Weather StatementJAN43 min
Jul 3, 5:36 PM CDTMesoscale DiscussionSPC84 min
Jul 3, 7:09 PM CDTSpecial Weather StatementJAN51 min
Jul 4, 3:37 AM CDTFlash Flood WatchJAN11 hr
Jul 7, 7:54 PM CDTSpecial Weather StatementJAN36 min
Jul 10, 5:21 PM CDTSevere Thunderstorm WarningJAN23 min
Jul 10, 7:09 PM CDTSpecial Weather StatementJAN36 min
Jul 11, 1:53 PM CDTSpecial Weather StatementJAN37 min
Jul 12, 3:28 AM CDTHeat AdvisoryJAN11 days
Jul 14, 7:30 PM CDTSpecial Weather StatementJAN45 min
Jul 15, 12:57 PM CDTMesoscale DiscussionSPC63 min
Jul 15, 5:28 PM CDTSevere Thunderstorm WarningJAN47 min
Jul 15, 6:06 PM CDTSevere Thunderstorm WarningJAN39 min
Jul 21, 3:28 PM CDTSpecial Weather StatementJAN32 min
Jul 21, 3:33 PM CDTSevere Thunderstorm WarningJAN42 min
Jul 22, 7:08 PM CDTSpecial Weather StatementJAN22 min
Jul 23, 4:33 PM CDTSpecial Weather StatementJAN42 min
Jul 24, 9:37 PM CDTHeat AdvisoryJAN6 days
Jul 29, 2:12 PM CDTMesoscale DiscussionSPC2 hr
Jul 29, 3:22 PM CDTSpecial Weather StatementJAN38 min
Aug 5, 7:27 PM CDTSpecial Weather StatementJAN48 min
Aug 6, 2:52 AM CDTSpecial Weather StatementJAN38 min
Aug 7, 8:39 AM CDTMesoscale DiscussionSPC66 min
Aug 7, 10:22 AM CDTSevere Thunderstorm WatchSPC4 hr
Aug 7, 10:49 AM CDTSpecial Weather StatementJAN41 min
Aug 7, 3:05 PM CDTHeat AdvisoryJAN37 hr
Aug 8, 4:57 AM CDTExcessive Heat WarningJAN62 hr
Aug 18, 3:38 PM CDTMesoscale DiscussionSPC3 hr
Aug 18, 5:11 PM CDTSevere Thunderstorm WarningJAN34 min
Aug 19, 12:30 PM CDTMesoscale DiscussionSPC3 hr
Aug 22, 1:44 PM CDTMesoscale DiscussionSPC2 hr
Aug 22, 7:00 PM CDTMesoscale DiscussionSPC2 hr
Aug 23, 12:44 AM CDTSpecial Weather StatementJAN46 min
Sep 11, 4:09 PM CDTSpecial Weather StatementJAN51 min
Sep 11, 4:34 PM CDTSpecial Weather StatementJAN41 min
Oct 9, 3:55 PM CDTSpecial Weather StatementJAN50 min
Oct 9, 4:46 PM CDTSpecial Weather StatementJAN44 min
Oct 15, 2:12 PM CDTFire Weather WatchJAN3 days
Nov 5, 2:55 AM CSTDense Fog AdvisoryJAN6 hr
Nov 16, 10:35 AM CSTFlash Flood WatchJAN43 hr
Nov 16, 3:11 PM CSTWind AdvisoryJAN27 hr
Nov 17, 7:45 PM CSTTornado WatchSPC7 hr
Nov 18, 12:33 AM CSTSpecial Weather StatementJAN42 min
Nov 18, 12:36 AM CSTSevere Thunderstorm WarningJAN39 min
Nov 18, 1:14 AM CSTMesoscale DiscussionSPC2 hr
Nov 18, 1:33 AM CSTSpecial Weather StatementJAN42 min
Nov 18, 8:25 PM CSTDense Fog AdvisoryJAN13 hr
Nov 21, 3:56 AM CSTFreeze WarningJAN29 hr
Nov 21, 3:56 AM CSTFreeze WarningJAN53 hr
Dec 10, 12:03 AM CSTDense Fog AdvisoryJAN9 hr
Dec 12, 2:50 PM CSTWind AdvisoryJAN33 hr
Dec 22, 5:00 AM CSTDense Fog AdvisoryJAN5 hr
Dec 23, 2:17 PM CSTTornado WatchSPC6 hr
Dec 23, 7:41 PM CSTMesoscale DiscussionSPC2 hr
Dec 23, 8:20 PM CSTTornado WatchSPC8 hr
Dec 25, 7:45 AM CSTMesoscale DiscussionSPC3 hr
Dec 25, 8:02 AM CSTFlash Flood WatchJAN20 hr
Dec 25, 11:52 AM CSTFlash Flood WarningJAN6 hr
Dec 25, 12:17 PM CSTSpecial Weather StatementJAN43 min
Dec 25, 2:31 PM CSTSevere Thunderstorm WarningJAN24 min
Dec 26, 10:33 AM CSTRiver Flood WarningJAN4 days
Dec 27, 9:44 AM CSTRiver Flood WarningJAN51 hr
Dec 27, 3:15 PM CSTMesoscale DiscussionSPC90 min
Dec 28, 2:23 AM CSTTornado WatchSPC8 hr
Dec 28, 5:14 AM CSTMesoscale DiscussionSPC2 hr
Dec 28, 8:05 AM CSTSevere Thunderstorm WarningJAN55 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 archive20142016

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.