Alert archive / Mississippi / Copiah County

Weather alerts in Copiah County, Mississippi, 2015

132 weather alerts in 2015, from the National Weather Service and the Storm Prediction Center. An alert counts here when it covered this county.

Copiah County and its neighbors

Each county as a circle sized by its count in 2015. Tap one for its archive.

Alerts
132
Warnings
39
Watches
19
Advisories
25
Busiest month
May25 alerts
Busiest day
October 31, 20157 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 Copiah County in 2015 had a tornado report inside them.

Copiah County, 2015

WarningsWith a reportFalse alarm ratioReportsInside a warningMean lead time
Tornado warnings10100%0
Severe thunderstorm warnings281546%1776%25 min
Flash flood warnings5180%1100%59 min

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, 10:24 AM CSTMesoscale DiscussionSPC2 hr
Jan 3, 11:04 AM CSTTornado WatchSPC7 hr
Jan 3, 1:43 PM CSTMesoscale DiscussionSPC92 min
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
Jan 8, 9:59 PM CSTWinter Weather AdvisoryJAN14 hr
Feb 1, 2:28 PM CSTMesoscale DiscussionSPC92 min
Feb 1, 5:29 PM CSTSevere Thunderstorm WarningJAN46 min
Feb 1, 6:01 PM CSTSevere Thunderstorm WarningJAN74 min
Feb 16, 2:45 PM CSTWinter Weather AdvisoryJAN7 hr
Feb 20, 6:17 AM CSTFreezing Rain AdvisoryJAN5 hr
Feb 22, 4:21 AM CSTFreezing Rain AdvisoryJAN53 hr
Feb 23, 10:07 AM CSTFreezing Rain AdvisoryJAN23 hr
Feb 24, 3:06 PM CSTWinter Weather AdvisoryJAN31 hr
Mar 2, 1:54 AM CSTDense Fog AdvisoryJAN8 hr
Mar 2, 12:54 PM CSTRiver Flood WarningJAN4 days
Mar 2, 2:39 PM CSTDense Fog AdvisoryJAN18 hr
Mar 4, 3:12 PM CSTWinter Weather AdvisoryJAN23 hr
Mar 9, 10:58 AM CDTRiver Flood WarningJAN5 days
Mar 10, 5:37 AM CDTSpecial Weather StatementJAN28 min
Mar 11, 3:29 PM CDTFlash Flood WatchJAN47 hr
Mar 15, 5:03 AM CDTDense Fog AdvisoryJAN5 hr
Apr 6, 1:06 PM CDTMesoscale DiscussionSPC114 min
Apr 15, 6:30 PM CDTMesoscale DiscussionSPC2 hr
Apr 15, 7:10 PM CDTSevere Thunderstorm WarningJAN65 min
Apr 18, 6:17 PM CDTMesoscale DiscussionSPC2 hr
Apr 18, 6:41 PM CDTFlash Flood WarningJAN2 hr
Apr 18, 10:53 PM CDTFlash Flood WarningJAN3 hr
Apr 19, 8:02 PM CDTTornado WatchSPC5 hr
Apr 19, 10:16 PM CDTMesoscale DiscussionSPC59 min
Apr 25, 12:50 AM CDTTornado WatchSPC6 hr
May 11, 12:30 PM CDTMesoscale DiscussionSPC2 hr
May 17, 10:02 PM CDTSpecial Weather StatementJAN28 min
May 17, 11:39 PM CDTSevere Thunderstorm WarningJAN51 min
May 18, 12:09 AM CDTSevere Thunderstorm WarningJAN36 min
May 18, 12:39 AM CDTSevere Thunderstorm WarningJAN41 min
May 18, 3:48 AM CDTFlash Flood WatchJAN11 hr
May 19, 5:32 AM CDTDense Fog AdvisoryJAN3 hr
May 24, 1:49 PM CDTTornado WatchSPC8 hr
May 24, 5:03 PM CDTMesoscale DiscussionSPC117 min
May 24, 6:24 PM CDTSpecial Weather StatementJAN51 min
May 24, 7:24 PM CDTSpecial Weather StatementJAN36 min
May 24, 7:42 PM CDTMesoscale DiscussionSPC93 min
May 24, 10:28 PM CDTSpecial Weather StatementJAN47 min
May 25, 3:18 PM CDTSevere Thunderstorm WarningJAN42 min
May 25, 3:43 PM CDTSevere Thunderstorm WarningJAN35 min
May 25, 10:14 PM CDTMesoscale DiscussionSPC91 min
May 25, 10:37 PM CDTTornado WatchSPC6 hr
May 26, 12:54 AM CDTSevere Thunderstorm WarningJAN51 min
May 27, 12:35 PM CDTSevere Thunderstorm WarningJAN21 min
May 27, 12:43 PM CDTSevere Thunderstorm WatchSPC4 hr
May 30, 4:43 PM CDTSevere Thunderstorm WarningJAN47 min
May 30, 5:01 PM CDTSevere Thunderstorm WarningJAN44 min
May 30, 5:16 PM CDTMesoscale DiscussionSPC59 min
May 30, 5:47 PM CDTSevere Thunderstorm WarningJAN28 min
May 31, 12:43 PM CDTSevere Thunderstorm WarningJAN28 min
Jun 1, 4:09 AM CDTDense Fog AdvisoryJAN5 hr
Jun 9, 2:45 PM CDTSevere Thunderstorm WarningJAN45 min
Jun 9, 3:51 PM CDTSevere Thunderstorm WarningJAN54 min
Jun 9, 4:31 PM CDTFlash Flood WarningJAN3 hr
Jun 24, 1:55 PM CDTMesoscale DiscussionSPC65 min
Jun 24, 2:26 PM CDTSevere Thunderstorm WarningJAN64 min
Jun 24, 3:16 PM CDTSevere Thunderstorm WarningJAN59 min
Jun 29, 5:56 PM CDTSevere Thunderstorm WarningJAN64 min
Jun 30, 11:38 AM CDTMesoscale DiscussionSPC97 min
Jun 30, 1:09 PM CDTMesoscale DiscussionSPC3 hr
Jun 30, 5:42 PM CDTSpecial Weather StatementJAN33 min
Jul 4, 11:36 AM CDTMesoscale DiscussionSPC114 min
Jul 4, 12:49 PM CDTSpecial Weather StatementJAN41 min
Jul 7, 4:29 PM CDTSpecial Weather StatementJAN31 min
Jul 7, 5:00 PM CDTSpecial Weather StatementJAN30 min
Jul 12, 3:28 AM CDTHeat AdvisoryJAN11 days
Jul 23, 3:15 AM CDTHeat AdvisoryJAN40 hr
Jul 24, 9:37 PM CDTHeat AdvisoryJAN6 days
Jul 25, 3:55 PM CDTSpecial Weather StatementJAN50 min
Jul 30, 4:30 PM CDTSpecial Weather StatementJAN45 min
Jul 30, 4:39 PM CDTSevere Thunderstorm WarningJAN66 min
Jul 30, 5:18 PM CDTSpecial Weather StatementJAN42 min
Jul 30, 5:40 PM CDTSevere Thunderstorm WarningJAN40 min
Aug 6, 3:49 PM CDTHeat AdvisoryJAN61 hr
Aug 8, 4:57 AM CDTExcessive Heat WarningJAN62 hr
Aug 8, 6:26 PM CDTSevere Thunderstorm WarningJAN18 min
Aug 10, 4:06 AM CDTHeat AdvisoryJAN39 hr
Aug 11, 10:00 AM CDTSpecial Weather StatementJAN30 min
Aug 11, 10:03 AM CDTSpecial Weather StatementJAN27 min
Aug 18, 2:25 PM CDTSpecial Weather StatementJAN35 min
Aug 22, 5:02 PM CDTSpecial Weather StatementJAN28 min
Oct 15, 2:12 PM CDTFire Weather WatchJAN3 days
Oct 25, 3:50 AM CDTFlash Flood WatchJAN30 hr
Oct 26, 4:55 AM CDTWind AdvisoryJAN14 hr
Oct 31, 3:54 AM CDTFlash Flood WatchJAN20 hr
Oct 31, 11:45 AM CDTTornado WatchSPC8 hr
Oct 31, 1:04 PM CDTSpecial Weather StatementJAN26 min
Oct 31, 1:35 PM CDTMesoscale DiscussionSPC55 min
Oct 31, 1:42 PM CDTSpecial Weather StatementJAN33 min
Oct 31, 3:36 PM CDTMesoscale DiscussionSPC54 min
Oct 31, 5:42 PM CDTMesoscale DiscussionSPC93 min
Nov 16, 10:35 AM CSTFlash Flood WatchJAN43 hr
Nov 16, 3:11 PM CSTWind AdvisoryJAN27 hr
Nov 17, 12:19 PM CSTMesoscale DiscussionSPC116 min
Nov 17, 12:36 PM CSTTornado WatchSPC7 hr
Nov 17, 6:53 PM CSTMesoscale DiscussionSPC97 min
Nov 17, 7:45 PM CSTTornado WatchSPC7 hr
Nov 17, 9:02 PM CSTSevere Thunderstorm WarningJAN58 min
Nov 17, 10:17 PM CSTSpecial Weather StatementJAN43 min
Nov 17, 10:37 PM CSTSevere Thunderstorm WarningJAN53 min
Nov 18, 12:14 AM CSTFlash Flood WarningJAN4 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 13, 6:16 PM CSTMesoscale DiscussionSPC119 min
Dec 21, 5:47 PM CSTMesoscale DiscussionSPC118 min
Dec 22, 5:00 AM CSTDense Fog AdvisoryJAN5 hr
Dec 23, 2:34 AM CSTMesoscale DiscussionSPC86 min
Dec 23, 2:17 PM CSTTornado WatchSPC6 hr
Dec 24, 3:26 PM CSTSpecial Weather StatementJAN34 min
Dec 24, 3:57 PM CSTSevere Thunderstorm WarningJAN52 min
Dec 25, 7:45 AM CSTMesoscale DiscussionSPC3 hr
Dec 25, 8:01 AM CSTSpecial Weather StatementJAN29 min
Dec 25, 1:46 PM CSTFlash Flood WarningJAN3 hr
Dec 25, 4:28 PM CSTMesoscale DiscussionSPC3 hr
Dec 27, 2:48 PM CSTSevere Thunderstorm WarningJAN42 min
Dec 27, 2:55 PM CSTTornado WarningJAN35 min
Dec 27, 3:15 PM CSTMesoscale DiscussionSPC90 min
Dec 27, 3:38 PM CSTWind AdvisoryJAN16 hr
Dec 28, 2:03 AM CSTMesoscale DiscussionSPC117 min
Dec 28, 2:23 AM CSTTornado WatchSPC8 hr
Dec 28, 3:11 AM CSTSevere Thunderstorm WarningJAN64 min
Dec 28, 3:58 AM CSTSevere Thunderstorm WarningJAN37 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.