Alert archive / Mississippi / Clay County

Weather alerts in Clay County, Mississippi, 2017

103 weather alerts in 2017, 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 2017. Tap one for its archive.

Alerts
103
Warnings
18
Watches
17
Advisories
26
Busiest month
March19 alerts
Busiest day
June 16, 20176 alerts

Over time

By month

Warning verification

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

Clay County, 2017

WarningsWith a reportFalse alarm ratioReportsInside a warningMean lead time
Tornado warnings00
Severe thunderstorm warnings12742%367%17 min
Flash flood warnings2150%0

Each office's whole area, 2017

WarningsWith a reportFalse alarm ratioReportsInside a warningMean lead time
NWS Jackson, MS: tornado warnings843460%9886%22 min
NWS Jackson, MS: severe thunderstorm warnings38024635%73378%22 min
NWS Jackson, MS: flash flood warnings1287839%25779%68 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 1, 7:02 PM CSTDense Fog AdvisoryJAN12 hr
Jan 5, 1:04 PM CSTWinter Weather AdvisoryJAN33 hr
Jan 6, 7:05 PM CSTHard Freeze WarningJAN41 hr
Jan 6, 9:48 PM CSTWind Chill AdvisoryJAN13 hr
Jan 13, 7:37 PM CSTDense Fog AdvisoryJAN13 hr
Jan 15, 3:42 AM CSTDense Fog AdvisoryJAN6 hr
Feb 7, 12:22 PM CSTMesoscale DiscussionSPC2 hr
Feb 8, 1:06 AM CSTDense Fog AdvisoryJAN7 hr
Feb 22, 2:28 PM CSTDense Fog AdvisoryJAN18 hr
Feb 28, 2:10 AM CSTMesoscale DiscussionSPC3 hr
Mar 1, 10:08 AM CSTMesoscale DiscussionSPC2 hr
Mar 1, 11:48 AM CSTTornado WatchSPC6 hr
Mar 1, 12:38 PM CSTSevere Thunderstorm WarningJAN26 min
Mar 1, 1:41 PM CSTSevere Thunderstorm WarningJAN34 min
Mar 7, 3:37 AM CSTSevere Thunderstorm WatchSPC8 hr
Mar 7, 8:03 AM CSTMesoscale DiscussionSPC117 min
Mar 7, 11:02 AM CSTMesoscale DiscussionSPC58 min
Mar 7, 11:46 AM CSTSpecial Weather StatementJAN29 min
Mar 7, 12:32 PM CSTSevere Thunderstorm WarningJAN43 min
Mar 9, 6:39 PM CSTMesoscale DiscussionSPC96 min
Mar 10, 1:56 AM CSTSpecial Weather StatementJAN64 min
Mar 13, 3:13 PM CDTFreeze WatchJAN229 days
Mar 14, 3:48 AM CDTFreeze WatchJAN24 hr
Mar 14, 3:48 AM CDTFreeze WarningJAN30 hr
Mar 15, 3:25 AM CDTFreeze WarningJAN28 hr
Mar 27, 12:12 PM CDTMesoscale DiscussionSPC2 hr
Mar 27, 1:54 PM CDTSevere Thunderstorm WatchSPC7 hr
Mar 27, 3:33 PM CDTMesoscale DiscussionSPC87 min
Mar 30, 7:08 AM CDTSpecial Weather StatementJAN52 min
Apr 2, 4:52 PM CDTTornado WatchSPC9 hr
Apr 5, 8:15 PM CDTWind AdvisoryJAN20 hr
Apr 22, 12:51 PM CDTMesoscale DiscussionSPC114 min
Apr 22, 3:08 PM CDTSevere Thunderstorm WatchSPC4 hr
Apr 22, 4:56 PM CDTMesoscale DiscussionSPC64 min
Apr 26, 7:36 PM CDTMesoscale DiscussionSPC84 min
Apr 26, 9:01 PM CDTSevere Thunderstorm WatchSPC5 hr
Apr 26, 10:39 PM CDTSevere Thunderstorm WarningJAN47 min
Apr 28, 3:43 PM CDTWind AdvisoryJAN33 hr
Apr 29, 11:50 AM CDTFlash Flood WatchJAN28 hr
Apr 30, 6:59 AM CDTMesoscale DiscussionSPC2 hr
Apr 30, 7:32 AM CDTTornado WatchSPC7 hr
May 3, 3:48 AM CDTWind AdvisoryJAN24 hr
May 12, 1:43 PM CDTMesoscale DiscussionSPC3 hr
May 12, 7:16 PM CDTFlash Flood WarningJAN119 min
May 12, 7:30 PM CDTSpecial Weather StatementJAN30 min
May 20, 12:16 PM CDTSpecial Weather StatementJAN29 min
May 20, 2:12 PM CDTMesoscale DiscussionSPC93 min
May 27, 11:46 PM CDTMesoscale DiscussionSPC59 min
May 28, 12:18 AM CDTSevere Thunderstorm WatchSPC6 hr
May 28, 1:30 AM CDTSpecial Weather StatementJAN60 min
May 28, 1:44 AM CDTSevere Thunderstorm WarningJAN54 min
May 28, 2:11 AM CDTMesoscale DiscussionSPC2 hr
Jun 15, 11:36 AM CDTMesoscale DiscussionSPC114 min
Jun 15, 2:15 PM CDTSevere Thunderstorm WarningJAN48 min
Jun 16, 12:05 PM CDTMesoscale DiscussionSPC2 hr
Jun 16, 12:42 PM CDTSevere Thunderstorm WatchSPC10 hr
Jun 16, 3:40 PM CDTMesoscale DiscussionSPC2 hr
Jun 16, 4:39 PM CDTSevere Thunderstorm WarningJAN66 min
Jun 16, 5:20 PM CDTSevere Thunderstorm WarningJAN55 min
Jun 16, 6:19 PM CDTMesoscale DiscussionSPC56 min
Jun 18, 1:48 PM CDTMesoscale DiscussionSPC117 min
Jun 18, 5:35 PM CDTSpecial Weather StatementJAN55 min
Jun 19, 2:44 PM CDTFlash Flood WatchJAN4 days
Jun 22, 1:04 PM CDTTornado WatchSPC9 hr
Jun 22, 3:48 PM CDTMesoscale DiscussionSPC87 min
Jun 22, 8:57 PM CDTMesoscale DiscussionSPC63 min
Jun 23, 10:54 AM CDTMesoscale DiscussionSPC96 min
Jun 23, 11:28 AM CDTSpecial Weather StatementJAN47 min
Jun 23, 11:57 AM CDTSevere Thunderstorm WarningJAN35 min
Jul 1, 2:36 PM CDTSpecial Weather StatementJAN24 min
Jul 1, 3:09 PM CDTSpecial Weather StatementJAN36 min
Jul 8, 12:22 PM CDTSpecial Weather StatementMEG23 min
Jul 8, 1:07 PM CDTSevere Thunderstorm WarningJAN35 min
Jul 19, 3:22 AM CDTHeat AdvisoryJAN40 hr
Jul 20, 1:57 PM CDTHeat AdvisoryJAN29 hr
Jul 22, 3:45 AM CDTHeat AdvisoryJAN15 hr
Jul 26, 4:19 AM CDTHeat AdvisoryJAN40 hr
Aug 6, 5:11 PM CDTSevere Thunderstorm WarningJAN23 min
Aug 6, 5:47 PM CDTSpecial Weather StatementJAN43 min
Aug 7, 1:14 PM CDTFlash Flood WarningJAN3 hr
Aug 7, 2:04 PM CDTFlash Flood WatchJAN17 hr
Aug 8, 9:44 AM CDTFlash Flood WatchJAN33 hr
Aug 18, 3:02 PM CDTHeat AdvisoryJAN52 hr
Aug 31, 11:13 AM CDTTornado WatchSPC11 hr
Aug 31, 2:35 PM CDTMesoscale DiscussionSPC115 min
Aug 31, 5:47 PM CDTMesoscale DiscussionSPC88 min
Sep 5, 2:36 PM CDTMesoscale DiscussionSPC54 min
Sep 5, 3:26 PM CDTSpecial Weather StatementJAN34 min
Sep 5, 3:44 PM CDTSevere Thunderstorm WarningJAN61 min
Sep 11, 4:15 AM CDTWind AdvisoryJAN21 hr
Oct 28, 3:39 AM CDTFreeze WarningJAN29 hr
Nov 2, 3:52 PM CDTMesoscale DiscussionSPC113 min
Nov 3, 9:29 PM CDTSpecial Weather StatementJAN61 min
Nov 5, 4:03 AM CSTDense Fog AdvisoryJAN5 hr
Dec 1, 1:57 PM CSTDense Fog AdvisoryJAN20 hr
Dec 2, 1:43 PM CSTDense Fog AdvisoryJAN19 hr
Dec 7, 3:33 AM CSTWinter Weather AdvisoryJAN32 hr
Dec 17, 5:18 PM CSTDense Fog AdvisoryJAN16 hr
Dec 18, 3:45 PM CSTDense Fog AdvisoryJAN16 hr
Dec 19, 6:49 PM CSTDense Fog AdvisoryJAN6 hr
Dec 21, 2:05 AM CSTDense Fog AdvisoryJAN8 hr
Dec 21, 2:33 PM CSTDense Fog AdvisoryJAN19 hr
Dec 30, 5:04 AM CSTWinter Weather AdvisoryJAN33 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.