Alert archive / Mississippi / Clarke County

Weather alerts in Clarke County, Mississippi, 2018

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

Clarke County and its neighbors

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

Alerts
117
Warnings
34
Watches
15
Advisories
21
Busiest month
December19 alerts
Busiest day
December 28, 20188 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 2 tornado warnings covering Clarke County in 2018 had a tornado report inside them.

Clarke County, 2018

WarningsWith a reportFalse alarm ratioReportsInside a warningMean lead time
Tornado warnings20100%0
Severe thunderstorm warnings11555%1164%46 min
Flash flood warnings11827%7100%83 min

Each office's whole area, 2018

WarningsWith a reportFalse alarm ratioReportsInside a warningMean lead time
NWS Jackson, MS: tornado warnings912869%7751%15 min
NWS Jackson, MS: severe thunderstorm warnings44925044%72475%25 min
NWS Jackson, MS: flash flood warnings1217439%24585%93 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 9, 7:18 PM CSTDense Fog AdvisoryJAN10 hr
Jan 11, 10:55 PM CSTSpecial Weather StatementJAN50 min
Jan 15, 2:45 PM CSTWind Chill AdvisoryJAN45 hr
Jan 15, 2:45 PM CSTWinter Weather AdvisoryJAN33 hr
Jan 15, 2:56 PM CSTHard Freeze WarningJAN69 hr
Jan 22, 9:50 AM CSTTornado WarningJAN44 min
Jan 22, 10:25 AM CSTMesoscale DiscussionSPC2 hr
Jan 22, 10:37 AM CSTSpecial Weather StatementJAN23 min
Feb 10, 8:29 PM CSTMesoscale DiscussionSPC3 hr
Feb 26, 9:46 AM CSTRiver Flood WarningJAN44 hr
Mar 7, 2:52 PM CSTFreeze WatchJAN12 hr
Mar 8, 3:03 AM CSTFreeze WarningJAN29 hr
Mar 11, 4:07 AM CDTSevere Thunderstorm WarningJAN53 min
Mar 13, 3:19 PM CDTFreeze WatchJAN23 hr
Mar 14, 2:07 PM CDTFreeze WarningJAN18 hr
Mar 19, 4:55 AM CDTDense Fog AdvisoryJAN5 hr
Mar 29, 9:58 AM CDTSpecial Weather StatementJAN62 min
Apr 3, 8:13 PM CDTSevere Thunderstorm WatchSPC3 hr
Apr 3, 10:18 PM CDTSpecial Weather StatementJAN57 min
Apr 3, 10:46 PM CDTSevere Thunderstorm WarningJAN59 min
Apr 3, 11:33 PM CDTMesoscale DiscussionSPC57 min
Apr 6, 3:20 PM CDTTornado WatchSPC8 hr
Apr 6, 8:53 PM CDTSevere Thunderstorm WatchSPC10 hr
Apr 6, 9:29 PM CDTSevere Thunderstorm WarningJAN46 min
Apr 6, 9:45 PM CDTFlash Flood WarningJAN3 hr
Apr 6, 11:10 PM CDTFlash Flood WarningJAN4 hr
Apr 12, 2:51 PM CDTFlash Flood WatchJAN52 hr
Apr 13, 11:08 AM CDTRiver Flood WarningJAN70 hr
Apr 14, 6:37 AM CDTMesoscale DiscussionSPC83 min
Apr 14, 6:57 AM CDTTornado WatchSPC7 hr
Apr 14, 9:53 AM CDTSevere Thunderstorm WarningJAN97 min
Apr 14, 11:22 AM CDTSevere Thunderstorm WarningJAN53 min
Apr 22, 10:37 AM CDTMesoscale DiscussionSPC2 hr
Apr 22, 4:32 PM CDTSpecial Weather StatementJAN58 min
Apr 22, 4:52 PM CDTSevere Thunderstorm WarningJAN23 min
May 17, 11:29 AM CDTSpecial Weather StatementJAN46 min
May 17, 2:56 PM CDTSpecial Weather StatementJAN49 min
May 19, 9:55 PM CDTSpecial Weather StatementJAN35 min
May 20, 9:27 PM CDTSpecial Weather StatementJAN48 min
May 23, 3:43 PM CDTSpecial Weather StatementJAN32 min
May 30, 5:58 PM CDTSpecial Weather StatementJAN47 min
May 30, 6:43 PM CDTFlash Flood WarningJAN2 hr
May 30, 7:09 PM CDTSpecial Weather StatementJAN51 min
Jun 3, 3:49 PM CDTMesoscale DiscussionSPC56 min
Jun 6, 5:15 AM CDTDense Fog AdvisoryJAN3 hr
Jun 12, 4:36 PM CDTSevere Thunderstorm WarningJAN25 min
Jun 13, 3:23 PM CDTSpecial Weather StatementJAN37 min
Jun 14, 7:50 PM CDTSpecial Weather StatementJAN25 min
Jun 14, 8:19 PM CDTSpecial Weather StatementJAN26 min
Jun 15, 3:07 AM CDTSpecial Weather StatementJAN53 min
Jun 22, 10:55 AM CDTSevere Thunderstorm WatchSPC10 hr
Jun 22, 6:05 PM CDTMesoscale DiscussionSPC115 min
Jun 22, 6:32 PM CDTSevere Thunderstorm WarningJAN58 min
Jun 26, 3:47 AM CDTHeat AdvisoryJAN16 hr
Jun 26, 3:25 PM CDTHeat AdvisoryJAN30 hr
Jun 27, 2:43 PM CDTHeat AdvisoryJAN29 hr
Jun 28, 4:34 PM CDTMesoscale DiscussionSPC86 min
Jun 28, 4:59 PM CDTSevere Thunderstorm WatchSPC7 hr
Jun 28, 6:51 PM CDTSpecial Weather StatementJAN54 min
Jun 28, 7:01 PM CDTMesoscale DiscussionSPC89 min
Jul 4, 6:20 PM CDTSpecial Weather StatementJAN25 min
Jul 7, 1:30 PM CDTSpecial Weather StatementJAN45 min
Jul 13, 4:42 AM CDTHeat AdvisoryJAN14 hr
Jul 15, 3:55 AM CDTHeat AdvisoryJAN15 hr
Jul 15, 12:54 PM CDTSevere Thunderstorm WarningJAN49 min
Jul 16, 3:16 AM CDTHeat AdvisoryJAN16 hr
Jul 16, 3:06 PM CDTSpecial Weather StatementJAN54 min
Jul 16, 3:53 PM CDTSpecial Weather StatementJAN52 min
Jul 18, 6:35 PM CDTSpecial Weather StatementJAN40 min
Jul 18, 7:16 PM CDTFlash Flood WarningJAN119 min
Jul 19, 3:13 PM CDTHeat AdvisoryJAN29 hr
Jul 20, 1:23 PM CDTMesoscale DiscussionSPC97 min
Jul 20, 2:11 PM CDTSevere Thunderstorm WatchSPC3 hr
Jul 31, 12:51 PM CDTSpecial Weather StatementJAN24 min
Jul 31, 12:51 PM CDTMesoscale DiscussionSPC2 hr
Jul 31, 1:28 PM CDTSevere Thunderstorm WarningJAN26 min
Jul 31, 2:31 PM CDTSpecial Weather StatementJAN44 min
Jul 31, 3:00 PM CDTFlash Flood WarningJAN2 hr
Aug 7, 4:18 AM CDTHeat AdvisoryJAN11 hr
Aug 13, 2:34 PM CDTSpecial Weather StatementJAN26 min
Aug 17, 2:01 PM CDTSpecial Weather StatementJAN29 min
Sep 3, 4:18 AM CDTFlash Flood WatchJAN4 days
Sep 4, 5:11 PM CDTSpecial Weather StatementJAN64 min
Sep 4, 8:29 PM CDTSpecial Weather StatementJAN61 min
Sep 27, 8:13 PM CDTSpecial Weather StatementJAN47 min
Oct 31, 11:07 PM CDTTornado WatchSPC9 hr
Nov 1, 4:30 AM CDTMesoscale DiscussionSPC2 hr
Nov 1, 5:41 AM CDTSevere Thunderstorm WarningJAN64 min
Nov 1, 6:18 AM CDTTornado WarningJAN35 min
Nov 4, 9:50 PM CSTDense Fog AdvisoryJAN10 hr
Nov 7, 10:07 AM CSTSpecial Weather StatementJAN8 min
Nov 7, 10:34 AM CSTMesoscale DiscussionSPC56 min
Nov 7, 10:40 AM CSTFlash Flood WarningJAN93 min
Nov 13, 3:34 PM CSTFreeze WatchJAN18 hr
Nov 14, 9:33 AM CSTFreeze WarningJAN23 hr
Nov 14, 6:19 PM CSTSpecial Weather StatementJAN3 hr
Nov 23, 10:59 PM CSTDense Fog AdvisoryJAN10 hr
Nov 24, 10:04 PM CSTDense Fog AdvisoryJAN11 hr
Dec 1, 4:31 AM CSTMesoscale DiscussionSPC59 min
Dec 16, 2:23 PM CSTDense Fog AdvisoryJAN20 hr
Dec 18, 12:32 AM CSTDense Fog AdvisoryJAN9 hr
Dec 19, 9:37 PM CSTDense Fog AdvisoryJAN11 hr
Dec 26, 3:44 AM CSTFlash Flood WatchJAN52 hr
Dec 26, 12:40 PM CSTWind AdvisoryJAN27 hr
Dec 27, 2:41 PM CSTFlash Flood WarningJAN2 hr
Dec 27, 3:26 PM CSTSpecial Weather StatementJAN34 min
Dec 27, 9:31 PM CSTRiver Flood WarningJAN4 days
Dec 27, 9:44 PM CSTFlash Flood WarningJAN4 hr
Dec 28, 1:25 AM CSTFlash Flood Warning EmergencyJAN3 hr
Dec 28, 1:58 AM CSTFlash Flood WarningJAN6 hr
Dec 28, 4:21 AM CSTFlash Flood Warning EmergencyJAN114 min
Dec 28, 7:57 AM CSTAreal Flood WarningJAN6 hr
Dec 28, 12:08 PM CSTRiver Flood WarningJAN21 days
Dec 28, 1:47 PM CSTAreal Flood WarningJAN24 hr
Dec 30, 5:31 PM CSTDense Fog AdvisoryJAN11 hr
Dec 31, 11:47 AM CSTTornado WatchSPC5 hr
Dec 31, 1:54 PM CSTMesoscale DiscussionSPC2 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.