Alert archive / Mississippi / Bolivar County

Weather alerts in Bolivar County, Mississippi, 2021

130 weather alerts in 2021, from the National Weather Service and the Storm Prediction Center. An alert counts here when it covered this county.

Bolivar County and its neighbors

Each county as a circle sized by its count in 2021. Tap one for its archive.

Alerts
130
Warnings
42
Watches
20
Advisories
25
Busiest month
March29 alerts
Busiest day
March 17, 202110 alerts

Over time

By month

Warning verification

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

1 of 5 tornado warnings covering Bolivar County in 2021 had a tornado report inside them; 1 of 2 tornado reports fell inside a warning, on average 13 minutes after it went out.

Bolivar County, 2021

WarningsWith a reportFalse alarm ratioReportsInside a warningMean lead time
Tornado warnings5180%250%13 min
Severe thunderstorm warnings11373%1694%56 min
Flash flood warnings10460%4100%45 min

Each office's whole area, 2021

WarningsWith a reportFalse alarm ratioReportsInside a warningMean lead time
NWS Jackson, MS: tornado warnings622265%7661%21 min
NWS Jackson, MS: severe thunderstorm warnings29616943%53086%28 min
NWS Jackson, MS: flash flood warnings1106640%19983%83 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 10, 3:52 AM CSTWinter Weather AdvisoryJAN32 hr
Jan 15, 4:01 AM CSTWind AdvisoryJAN14 hr
Feb 10, 4:28 AM CSTWinter Weather AdvisoryJAN32 hr
Feb 10, 4:46 PM CSTIce Storm WarningJAN19 hr
Feb 11, 3:43 PM CSTWinter Weather AdvisoryJAN20 hr
Feb 12, 4:09 PM CSTWinter Storm WatchJAN23 hr
Feb 13, 3:13 PM CSTWinter Storm WarningJAN48 hr
Feb 14, 9:09 PM CSTHard Freeze WarningJAN63 hr
Feb 14, 9:41 PM CSTWind Chill AdvisoryJAN35 hr
Feb 15, 5:57 AM CSTMesoscale DiscussionSPC6 hr
Feb 16, 4:25 AM CSTWinter Storm WatchJAN10 hr
Feb 16, 2:50 PM CSTWinter Storm WarningJAN39 hr
Feb 17, 9:15 AM CSTMesoscale DiscussionSPC6 hr
Feb 18, 6:25 AM CSTWinter Weather AdvisoryJAN14 hr
Feb 18, 9:24 AM CSTHard Freeze WarningJAN27 hr
Feb 19, 3:45 AM CSTHard Freeze WarningJAN29 hr
Feb 26, 1:59 PM CSTAreal Flood WarningJAN6 hr
Feb 26, 2:13 PM CSTFlash Flood WatchJAN14 hr
Feb 27, 4:04 AM CSTFlash Flood WatchJAN56 hr
Feb 28, 4:40 PM CSTMesoscale DiscussionSPC95 min
Feb 28, 6:27 PM CSTMesoscale DiscussionSPC93 min
Mar 1, 8:45 AM CSTAreal Flood WarningJAN3 hr
Mar 17, 5:34 AM CDTMesoscale DiscussionSPC86 min
Mar 17, 5:53 AM CDTTornado WatchSPC7 hr
Mar 17, 6:05 AM CDTTornado WarningJAN40 min
Mar 17, 6:44 AM CDTTornado WarningJAN19 min
Mar 17, 12:15 PM CDTMesoscale DiscussionSPC90 min
Mar 17, 12:57 PM CDTTornado Watch PDSSPC6 hr
Mar 17, 2:56 PM CDTMesoscale DiscussionSPC94 min
Mar 17, 4:45 PM CDTSevere Thunderstorm WarningJAN60 min
Mar 17, 4:56 PM CDTTornado WarningJAN29 min
Mar 17, 6:09 PM CDTMesoscale DiscussionSPC66 min
Mar 19, 11:13 AM CDTRiver Flood AdvisoryJAN6 days
Mar 22, 2:25 PM CDTWind AdvisoryJAN23 hr
Mar 24, 12:10 PM CDTWind AdvisoryJAN26 hr
Mar 25, 11:46 AM CDTRiver Flood WarningJAN12 days
Mar 27, 3:25 PM CDTTornado WatchSPC10 hr
Mar 27, 9:01 PM CDTTornado WatchSPC7 hr
Mar 27, 9:36 PM CDTTornado WarningJAN36 min
Mar 27, 10:45 PM CDTMesoscale DiscussionSPC90 min
Mar 27, 10:59 PM CDTSevere Thunderstorm WarningJAN61 min
Mar 27, 11:31 PM CDTTornado WarningJAN44 min
Mar 28, 12:11 AM CDTSevere Thunderstorm WarningJAN27 min
Mar 30, 5:46 PM CDTMesoscale DiscussionSPC119 min
Mar 30, 9:55 PM CDTMesoscale DiscussionSPC2 hr
Mar 31, 2:57 AM CDTWind AdvisoryJAN17 hr
Mar 31, 3:48 AM CDTSpecial Weather StatementJAN42 min
Mar 31, 4:06 AM CDTSpecial Weather StatementJAN24 min
Mar 31, 2:26 PM CDTFreeze WatchJAN20 hr
Apr 1, 10:41 AM CDTFreeze WarningJAN22 hr
Apr 8, 10:54 AM CDTRiver Flood WarningJAN50 hr
Apr 9, 1:25 PM CDTMesoscale DiscussionSPC95 min
Apr 9, 3:10 PM CDTMesoscale DiscussionSPC95 min
Apr 9, 3:42 PM CDTSevere Thunderstorm WatchSPC7 hr
Apr 9, 4:55 PM CDTSevere Thunderstorm WarningJAN95 min
Apr 10, 9:15 PM CDTRiver Flood WarningJAN14 hr
May 2, 4:46 PM CDTTornado WatchSPC5 hr
May 4, 10:52 AM CDTTornado WatchSPC7 hr
May 4, 12:18 PM CDTSevere Thunderstorm WarningJAN72 min
May 9, 12:14 PM CDTMesoscale DiscussionSPC91 min
May 9, 1:14 PM CDTSevere Thunderstorm WatchSPC8 hr
May 9, 3:42 PM CDTMesoscale DiscussionSPC93 min
May 9, 5:41 PM CDTMesoscale DiscussionSPC2 hr
May 9, 7:32 PM CDTSevere Thunderstorm WarningJAN73 min
May 28, 2:42 AM CDTSpecial Weather StatementJAN48 min
Jun 7, 5:09 PM CDTSevere Thunderstorm WatchSPC3 hr
Jun 7, 5:23 PM CDTMesoscale DiscussionSPC67 min
Jun 7, 6:23 PM CDTSevere Thunderstorm WarningJAN55 min
Jun 8, 4:21 AM CDTFlash Flood WatchJAN17 hr
Jun 8, 7:28 AM CDTFlash Flood WarningJAN5 hr
Jun 8, 9:41 AM CDTFlash Flood Warning Considerable damage threatJAN2 hr
Jun 8, 11:53 AM CDTFlash Flood Warning EmergencyCatastrophic damage threatJAN3 hr
Jun 8, 12:42 PM CDTSevere Thunderstorm WatchSPC6 hr
Jun 8, 2:38 PM CDTFlash Flood Warning Considerable damage threatJAN3 hr
Jun 8, 3:06 PM CDTSpecial Weather StatementJAN39 min
Jun 8, 3:12 PM CDTSevere Thunderstorm WarningJAN63 min
Jun 8, 4:39 PM CDTFlash Flood WarningJAN2 hr
Jun 8, 11:12 PM CDTFlash Flood WarningJAN3 hr
Jun 9, 4:03 AM CDTFlash Flood WatchJAN39 hr
Jun 9, 11:50 AM CDTFlash Flood WarningJAN3 hr
Jun 9, 12:06 PM CDTMesoscale DiscussionSPC2 hr
Jun 9, 2:01 PM CDTFlash Flood WarningJAN3 hr
Jun 10, 10:33 AM CDTFlash Flood WarningJAN3 hr
Jun 10, 6:10 PM CDTAreal Flood WarningJAN2 hr
Jun 10, 8:11 PM CDTAreal Flood WarningJAN12 hr
Jun 13, 4:01 PM CDTSevere Thunderstorm WarningJAN29 min
Jun 13, 4:31 PM CDTSevere Thunderstorm WarningJAN44 min
Jul 11, 2:52 AM CDTSpecial Weather StatementJAN38 min
Jul 18, 1:04 PM CDTSpecial Weather StatementJAN56 min
Jul 18, 2:14 PM CDTMesoscale DiscussionSPC2 hr
Jul 23, 2:40 PM CDTHeat AdvisoryJAN28 hr
Jul 24, 2:55 PM CDTHeat AdvisoryJAN28 hr
Jul 25, 2:32 PM CDTHeat AdvisoryJAN28 hr
Jul 26, 2:54 PM CDTHeat AdvisoryJAN28 hr
Jul 27, 2:54 PM CDTExcessive Heat WarningJAN4 days
Jul 27, 2:54 PM CDTHeat AdvisoryJAN5 days
Aug 9, 3:22 AM CDTHeat AdvisoryJAN16 hr
Aug 9, 2:26 PM CDTHeat AdvisoryJAN3 days
Aug 13, 6:19 PM CDTSpecial Weather StatementJAN26 min
Aug 18, 9:47 PM CDTSpecial Weather StatementJAN43 min
Aug 19, 6:38 PM CDTSpecial Weather StatementJAN52 min
Aug 20, 3:05 PM CDTHeat AdvisoryJAN3 days
Aug 22, 2:29 PM CDTExcessive Heat WarningJAN53 hr
Aug 24, 3:01 PM CDTHeat AdvisoryJAN28 hr
Aug 25, 3:10 PM CDTHeat AdvisoryJAN28 hr
Aug 28, 3:36 AM CDTFlash Flood WatchJAN66 hr
Aug 29, 4:00 PM CDTWind AdvisoryJAN30 hr
Aug 29, 4:08 PM CDTSpecial Weather StatementJAN67 min
Sep 1, 4:08 AM CDTHeat AdvisoryJAN15 hr
Sep 5, 3:18 PM CDTSpecial Weather StatementJAN57 min
Sep 17, 7:48 PM CDTSpecial Weather StatementJAN57 min
Sep 19, 8:15 AM CDTFlash Flood WarningJAN2 hr
Sep 21, 11:51 AM CDTMesoscale DiscussionSPC2 hr
Sep 21, 2:47 PM CDTMesoscale DiscussionSPC2 hr
Oct 5, 12:45 PM CDTMesoscale DiscussionSPC2 hr
Nov 6, 10:16 PM CDTDense Fog AdvisoryJAN13 hr
Dec 2, 2:51 AM CSTDense Fog AdvisoryJAN6 hr
Dec 4, 3:02 PM CSTDense Fog AdvisoryJAN18 hr
Dec 6, 6:59 AM CSTSpecial Weather StatementJAN31 min
Dec 10, 10:00 PM CSTMesoscale DiscussionSPC90 min
Dec 10, 10:09 PM CSTMesoscale DiscussionSPC96 min
Dec 10, 10:44 PM CSTTornado WatchSPC6 hr
Dec 11, 2:00 AM CSTMesoscale DiscussionSPC90 min
Dec 11, 2:02 AM CSTSpecial Weather StatementJAN58 min
Dec 16, 2:08 PM CSTMesoscale DiscussionSPC3 hr
Dec 29, 10:44 AM CSTMesoscale DiscussionSPC2 hr
Dec 29, 12:05 PM CSTTornado WatchSPC7 hr
Dec 29, 1:18 PM CSTMesoscale DiscussionSPC87 min
Dec 29, 3:39 PM CSTSevere Thunderstorm WarningJAN48 min
Dec 29, 3:41 PM CSTMesoscale DiscussionSPC64 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 archive20202022

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.