Alert archive / Mississippi / Covington County

Weather alerts in Covington County, Mississippi, 2020

125 weather alerts in 2020, from the National Weather Service and the Storm Prediction Center. An alert counts here when it covered this county.

Covington County and its neighbors

Each county as a circle sized by its count in 2020. Tap one for its archive.

Alerts
125
Warnings
35
Watches
17
Advisories
23
Busiest month
April23 alerts
Busiest day
April 23, 20209 alerts

Over time

By month

Warning verification

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

5 of 7 tornado warnings covering Covington County in 2020 had a tornado report inside them; 9 of 9 tornado reports fell inside a warning, on average 25 minutes after it went out.

Covington County, 2020

WarningsWith a reportFalse alarm ratioReportsInside a warningMean lead time
Tornado warnings7529%9100%25 min
Severe thunderstorm warnings191711%3471%20 min
Flash flood warnings6350%1080%92 min

Each office's whole area, 2020

WarningsWith a reportFalse alarm ratioReportsInside a warningMean lead time
NWS Jackson, MS: tornado warnings603738%14985%26 min
NWS Jackson, MS: severe thunderstorm warnings42326837%89883%26 min
NWS Jackson, MS: flash flood warnings1087332%27685%87 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, 3:07 AM CSTFlash Flood WatchJAN57 hr
Jan 9, 2:27 PM CSTWind AdvisoryJAN48 hr
Jan 11, 2:37 AM CSTTornado WatchSPC8 hr
Jan 11, 7:39 AM CSTMesoscale DiscussionSPC96 min
Jan 11, 7:57 AM CSTTornado WatchSPC9 hr
Jan 11, 9:16 AM CSTSevere Thunderstorm WarningJAN59 min
Jan 11, 9:21 AM CSTSevere Thunderstorm WarningJAN54 min
Jan 11, 9:49 AM CSTSevere Thunderstorm WarningJAN56 min
Jan 13, 2:36 PM CSTDense Fog AdvisoryJAN18 hr
Jan 13, 4:09 PM CSTFlash Flood WarningJAN3 hr
Jan 14, 6:52 PM CSTSpecial Weather StatementJAN23 min
Jan 14, 7:36 PM CSTFlash Flood WarningJAN3 hr
Jan 14, 10:40 PM CSTAreal Flood WarningJAN9 hr
Jan 18, 12:43 PM CSTMesoscale DiscussionSPC2 hr
Jan 28, 12:33 AM CSTDense Fog AdvisoryJAN10 hr
Jan 30, 4:11 AM CSTDense Fog AdvisoryJAN5 hr
Feb 5, 11:49 AM CSTTornado WatchSPC6 hr
Feb 5, 1:30 PM CSTFlash Flood WarningJAN6 hr
Feb 5, 3:59 PM CSTSevere Thunderstorm WarningJAN61 min
Feb 5, 5:06 PM CSTMesoscale DiscussionSPC84 min
Feb 5, 5:50 PM CSTTornado WatchSPC6 hr
Feb 5, 9:43 PM CSTMesoscale DiscussionSPC2 hr
Feb 5, 9:58 PM CSTSevere Thunderstorm WarningJAN47 min
Feb 5, 11:15 PM CSTMesoscale DiscussionSPC2 hr
Feb 5, 11:48 PM CSTTornado WatchSPC8 hr
Feb 6, 12:00 AM CSTSevere Thunderstorm WarningJAN60 min
Feb 6, 3:28 AM CSTSpecial Weather StatementJAN32 min
Feb 10, 12:39 PM CSTMesoscale DiscussionSPC2 hr
Feb 10, 4:33 PM CSTMesoscale DiscussionSPC87 min
Feb 19, 2:59 PM CSTFlash Flood WatchJAN18 hr
Feb 25, 5:04 AM CSTDense Fog AdvisoryJAN4 hr
Mar 3, 2:38 PM CSTFlash Flood WatchJAN39 hr
Mar 4, 1:19 AM CSTMesoscale DiscussionSPC2 hr
Mar 4, 1:53 AM CSTTornado WatchSPC8 hr
Mar 4, 4:24 AM CSTTornado WarningJAN66 min
Mar 4, 4:48 AM CSTTornado WarningJAN42 min
Mar 4, 10:50 AM CSTMesoscale DiscussionSPC115 min
Mar 11, 2:31 AM CDTDense Fog AdvisoryJAN6 hr
Mar 31, 6:44 AM CDTSevere Thunderstorm WarningJAN37 min
Mar 31, 7:53 AM CDTMesoscale DiscussionSPC2 hr
Apr 11, 3:44 PM CDTWind AdvisoryJAN30 hr
Apr 12, 1:24 PM CDTTornado WatchSPC9 hr
Apr 12, 3:38 PM CDTMesoscale DiscussionSPC97 min
Apr 12, 3:39 PM CDTTornado Warning EmergencyJAN66 min
Apr 12, 3:52 PM CDTMesoscale DiscussionSPC23 min
Apr 12, 4:26 PM CDTMesoscale DiscussionSPC34 min
Apr 12, 4:54 PM CDTMesoscale DiscussionSPC66 min
Apr 12, 5:01 PM CDTTornado Warning EmergencyTornado observedCatastrophic damage threatJAN59 min
Apr 18, 10:51 PM CDTSpecial Weather StatementJAN24 min
Apr 19, 11:06 AM CDTMesoscale DiscussionSPC54 min
Apr 19, 11:45 AM CDTTornado WatchSPC9 hr
Apr 19, 2:26 PM CDTSpecial Weather StatementJAN34 min
Apr 19, 3:07 PM CDTMesoscale DiscussionSPC113 min
Apr 22, 9:47 PM CDTTornado WatchSPC9 hr
Apr 22, 10:21 PM CDTSevere Thunderstorm WarningJAN54 min
Apr 22, 11:06 PM CDTSpecial Weather StatementJAN24 min
Apr 22, 11:12 PM CDTSevere Thunderstorm WarningJAN51 min
Apr 23, 2:28 AM CDTMesoscale DiscussionSPC92 min
Apr 23, 3:45 AM CDTSevere Thunderstorm WarningJAN48 min
Apr 23, 3:57 AM CDTTornado WarningJAN31 min
Apr 23, 4:02 AM CDTSevere Thunderstorm WarningJAN43 min
Apr 23, 1:37 PM CDTMesoscale DiscussionSPC113 min
Apr 28, 10:46 PM CDTSpecial Weather StatementJAN59 min
May 6, 10:26 AM CDTRed Flag WarningJAN9 hr
May 17, 12:54 PM CDTMesoscale DiscussionSPC2 hr
May 22, 5:39 PM CDTFlash Flood WarningJAN73 min
May 23, 2:59 PM CDTSpecial Weather StatementJAN31 min
May 23, 3:34 PM CDTSevere Thunderstorm WarningJAN56 min
May 24, 4:26 PM CDTSpecial Weather StatementJAN49 min
May 24, 4:41 PM CDTSpecial Weather StatementJAN49 min
May 25, 4:11 PM CDTSpecial Weather StatementJAN34 min
May 25, 4:23 PM CDTSpecial Weather StatementJAN37 min
May 27, 12:16 PM CDTMesoscale DiscussionSPC89 min
May 27, 12:35 PM CDTSpecial Weather StatementJAN25 min
May 27, 2:36 PM CDTMesoscale DiscussionSPC84 min
May 27, 4:47 PM CDTSevere Thunderstorm WarningJAN43 min
Jun 5, 2:49 PM CDTSevere Thunderstorm WatchSPC6 hr
Jun 5, 7:12 PM CDTSpecial Weather StatementJAN63 min
Jun 5, 7:28 PM CDTSevere Thunderstorm WarningJAN47 min
Jun 6, 4:24 PM CDTFlash Flood WatchJAN57 hr
Jun 7, 11:26 AM CDTWind AdvisoryJAN22 hr
Jun 23, 6:13 PM CDTSpecial Weather StatementJAN32 min
Jun 23, 6:18 PM CDTSevere Thunderstorm WarningJAN42 min
Jun 24, 6:08 AM CDTMesoscale DiscussionSPC2 hr
Jun 24, 9:14 AM CDTTornado WarningJAN31 min
Jun 25, 3:43 PM CDTMesoscale DiscussionSPC62 min
Jun 25, 5:01 PM CDTSevere Thunderstorm WarningJAN74 min
Jul 3, 4:47 PM CDTSpecial Weather StatementJAN28 min
Jul 10, 2:38 AM CDTHeat AdvisoryJAN16 hr
Jul 10, 3:19 PM CDTHeat AdvisoryJAN28 hr
Jul 11, 2:32 PM CDTHeat AdvisoryJAN28 hr
Jul 12, 2:51 PM CDTHeat AdvisoryJAN28 hr
Jul 13, 2:58 PM CDTHeat AdvisoryJAN28 hr
Jul 14, 2:22 PM CDTHeat AdvisoryJAN29 hr
Jul 14, 3:35 PM CDTSpecial Weather StatementJAN25 min
Jul 15, 12:24 PM CDTMesoscale DiscussionSPC96 min
Jul 15, 7:16 PM CDTHeat AdvisoryJAN24 hr
Jul 25, 11:01 AM CDTSpecial Weather StatementJAN29 min
Aug 16, 5:05 PM CDTMesoscale DiscussionSPC85 min
Aug 16, 6:55 PM CDTSevere Thunderstorm WarningJAN50 min
Aug 20, 1:59 PM CDTSpecial Weather StatementJAN31 min
Aug 20, 3:09 PM CDTSpecial Weather StatementJAN36 min
Aug 25, 11:28 AM CDTFlash Flood WarningJAN4 hr
Aug 27, 6:36 AM CDTMesoscale DiscussionSPC114 min
Aug 28, 10:06 AM CDTFlash Flood WarningJAN4 hr
Sep 13, 2:32 AM CDTFlash Flood WatchJAN66 hr
Sep 13, 4:15 PM CDTTropical Storm WatchJAN42 hr
Sep 27, 4:02 AM CDTDense Fog AdvisoryJAN6 hr
Oct 9, 4:20 AM CDTWind AdvisoryJAN33 hr
Oct 19, 7:09 PM CDTDense Fog AdvisoryJAN14 hr
Oct 27, 2:23 PM CDTFlash Flood WatchJAN33 hr
Oct 28, 4:01 PM CDTWind AdvisoryJAN12 hr
Nov 25, 8:18 AM CSTSevere Thunderstorm WarningJAN42 min
Nov 25, 8:57 AM CSTSpecial Weather StatementJAN48 min
Nov 27, 5:13 PM CSTSpecial Weather StatementJAN47 min
Nov 30, 2:07 PM CSTFreeze WarningJAN19 hr
Dec 10, 2:27 PM CSTDense Fog AdvisoryJAN19 hr
Dec 12, 8:58 PM CSTDense Fog AdvisoryJAN12 hr
Dec 13, 9:06 PM CSTMesoscale DiscussionSPC114 min
Dec 13, 9:39 PM CSTSpecial Weather StatementJAN51 min
Dec 20, 7:57 PM CSTDense Fog AdvisoryJAN13 hr
Dec 23, 10:51 PM CSTMesoscale DiscussionSPC114 min
Dec 24, 12:20 AM CSTSevere Thunderstorm WarningJAN55 min
Dec 24, 12:53 AM CSTTornado WarningJAN52 min
Dec 29, 7:38 AM CSTDense Fog AdvisoryJAN95 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 archive20192021

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.