Alert archive / Mississippi / Harrison County

Weather alerts in Harrison County, Mississippi, 2022

134 weather alerts in 2022, from the National Weather Service and the Storm Prediction Center. An alert counts here when it covered this county.

Harrison County and its neighbors

Each county as a circle sized by its count in 2022. Tap one for its archive.

Alerts
134
Warnings
32
Watches
14
Advisories
15
Busiest month
May22 alerts
Busiest day
December 14, 20228 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 3 tornado warnings covering Harrison County in 2022 had a tornado report inside them; 1 of 1 tornado reports fell inside a warning, on average 10 minutes after it went out.

Harrison County, 2022

WarningsWith a reportFalse alarm ratioReportsInside a warningMean lead time
Tornado warnings3167%1100%10 min
Severe thunderstorm warnings12558%2374%27 min
Flash flood warnings4325%6100%48 min

Each office's whole area, 2022

WarningsWith a reportFalse alarm ratioReportsInside a warningMean lead time
NWS New Orleans, LA: tornado warnings671676%3889%12 min
NWS New Orleans, LA: severe thunderstorm warnings1213174%10562%17 min
NWS New Orleans, LA: flash flood warnings833360%7588%59 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, 4:56 PM CSTMesoscale DiscussionSPC2 hr
Feb 2, 1:20 PM CSTAreal Flood AdvisoryLIX3 hr
Feb 3, 9:53 AM CSTMesoscale DiscussionSPC2 hr
Feb 3, 11:40 AM CSTTornado WatchSPC8 hr
Feb 3, 3:04 PM CSTSpecial Weather StatementLIX26 min
Feb 3, 4:15 PM CSTSpecial Weather StatementLIX30 min
Feb 3, 6:55 PM CSTRiver Flood WarningLIX66 hr
Feb 3, 6:59 PM CSTRiver Flood WarningLIX63 hr
Feb 14, 2:30 PM CSTRed Flag WarningLIX28 hr
Mar 8, 11:10 PM CSTSpecial Weather StatementLIX35 min
Mar 11, 5:06 PM CSTMesoscale DiscussionSPC2 hr
Mar 15, 5:02 AM CDTMesoscale DiscussionSPC2 hr
Mar 15, 6:54 AM CDTSpecial Weather StatementLIX66 min
Mar 15, 7:50 AM CDTSpecial Weather StatementLIX85 min
Mar 18, 3:55 AM CDTTornado WatchSPC8 hr
Mar 18, 7:16 AM CDTMesoscale DiscussionSPC89 min
Mar 22, 10:40 AM CDTTornado WatchSPC8 hr
Mar 22, 3:05 PM CDTMesoscale DiscussionSPC115 min
Mar 22, 4:37 PM CDTSpecial Weather StatementLIX38 min
Mar 22, 5:33 PM CDTMesoscale DiscussionSPC87 min
Mar 22, 7:00 PM CDTTornado WatchSPC4 hr
Mar 22, 7:15 PM CDTMesoscale DiscussionSPC60 min
Mar 22, 9:40 PM CDTMesoscale DiscussionSPC2 hr
Mar 22, 9:44 PM CDTSpecial Weather StatementLIX31 min
Mar 30, 3:39 PM CDTMesoscale DiscussionSPC2 hr
Mar 30, 6:31 PM CDTMesoscale DiscussionSPC119 min
Mar 30, 6:39 PM CDTTornado WatchSPC9 hr
Mar 30, 8:41 PM CDTSpecial Weather StatementLIX94 min
Mar 30, 9:02 PM CDTSevere Thunderstorm WarningLIX43 min
Apr 5, 6:27 AM CDTMesoscale DiscussionSPC3 hr
Apr 5, 6:51 AM CDTTornado WatchSPC8 hr
Apr 7, 7:24 PM CDTRed Flag WarningLIX24 hr
Apr 13, 8:02 PM CDTTornado WatchSPC4 hr
Apr 13, 9:38 PM CDTMesoscale DiscussionSPC97 min
Apr 13, 11:21 PM CDTSpecial Weather StatementLIX54 min
Apr 14, 12:15 AM CDTSpecial Weather StatementLIX30 min
Apr 16, 4:33 PM CDTMesoscale DiscussionSPC2 hr
Apr 16, 6:23 PM CDTSpecial Weather StatementLIX82 min
Apr 17, 6:55 PM CDTSevere Thunderstorm WatchSPC5 hr
Apr 17, 8:01 PM CDTMesoscale DiscussionSPC89 min
Apr 17, 9:37 PM CDTSpecial Weather StatementLIX53 min
Apr 17, 10:09 PM CDTMesoscale DiscussionSPC96 min
Apr 17, 10:48 PM CDTSevere Thunderstorm WarningLIX42 min
May 6, 2:06 AM CDTSpecial Weather StatementLIX84 min
May 6, 2:12 AM CDTMesoscale DiscussionSPC2 hr
May 14, 6:55 PM CDTSpecial Weather StatementLIX35 min
May 14, 7:29 PM CDTSpecial Weather StatementLIX61 min
May 14, 7:32 PM CDTSevere Thunderstorm WarningLIX39 min
May 15, 6:09 PM CDTSpecial Weather StatementLIX66 min
May 15, 6:25 PM CDTSevere Thunderstorm WarningLIX65 min
May 15, 8:06 PM CDTSpecial Weather StatementLIX24 min
May 16, 12:02 AM CDTSpecial Weather StatementLIX88 min
May 23, 8:24 PM CDTSpecial Weather StatementLIX36 min
May 23, 9:36 PM CDTAreal Flood AdvisoryLIX3 hr
May 24, 6:02 AM CDTAreal Flood AdvisoryLIX43 min
May 25, 8:57 AM CDTRiver Flood WarningLIX3 days
May 25, 8:57 AM CDTRiver Flood WarningLIX4 days
May 25, 9:23 AM CDTMesoscale DiscussionSPC97 min
May 25, 2:43 PM CDTTornado WarningLIX34 min
May 25, 3:04 PM CDTSpecial Weather StatementLIX56 min
May 26, 5:04 AM CDTMesoscale DiscussionSPC2 hr
May 26, 5:17 AM CDTSpecial Weather StatementLIX28 min
May 26, 6:48 AM CDTSpecial Weather StatementLIX42 min
May 26, 7:06 AM CDTSevere Thunderstorm WarningLIX28 min
May 30, 3:16 PM CDTSpecial Weather StatementLIX29 min
Jun 1, 2:37 PM CDTSpecial Weather StatementLIX53 min
Jun 9, 1:21 PM CDTMesoscale DiscussionSPC114 min
Jun 9, 3:58 PM CDTSpecial Weather StatementLIX17 min
Jun 10, 10:49 AM CDTSpecial Weather StatementLIX41 min
Jun 10, 1:06 PM CDTMesoscale DiscussionSPC84 min
Jun 10, 1:39 PM CDTSevere Thunderstorm WatchSPC5 hr
Jun 18, 6:09 PM CDTSevere Thunderstorm WarningLIX17 min
Jun 25, 4:02 PM CDTSpecial Weather StatementLIX28 min
Jun 30, 2:55 AM CDTAreal Flood AdvisoryLIX3 hr
Jun 30, 4:29 AM CDTFlash Flood WarningLIX3 hr
Jul 3, 2:21 PM CDTSpecial Weather StatementLIX24 min
Jul 4, 2:06 PM CDTAreal Flood AdvisoryLIX114 min
Jul 10, 12:14 AM CDTSpecial Weather StatementLIX61 min
Jul 13, 8:59 PM CDTSpecial Weather StatementLIX61 min
Jul 16, 2:27 PM CDTSpecial Weather StatementLIX33 min
Jul 22, 2:04 AM CDTSpecial Weather StatementLIX26 min
Aug 1, 2:51 PM CDTSpecial Weather StatementLIX39 min
Aug 4, 6:58 AM CDTAreal Flood AdvisoryLIX62 min
Aug 22, 6:42 PM CDTSpecial Weather StatementLIX78 min
Aug 23, 6:12 PM CDTSpecial Weather StatementLIX48 min
Aug 24, 9:48 AM CDTRiver Flood WarningLIX4 days
Aug 24, 1:01 PM CDTAreal Flood AdvisoryLIX90 min
Aug 25, 11:02 AM CDTAreal Flood AdvisoryLIX3 hr
Aug 25, 11:55 AM CDTFlash Flood WarningLIX3 hr
Aug 25, 12:49 PM CDTAreal Flood AdvisoryLIX3 hr
Aug 25, 1:33 PM CDTFlash Flood WarningLIX3 hr
Aug 25, 2:18 PM CDTAreal Flood AdvisoryLIX3 hr
Aug 25, 2:56 PM CDTRiver Flood WarningLIX44 hr
Aug 25, 3:46 PM CDTRiver Flood WarningLIX48 hr
Aug 30, 4:33 PM CDTSpecial Weather StatementLIX42 min
Sep 3, 3:40 PM CDTAreal Flood AdvisoryLIX3 hr
Sep 7, 3:06 PM CDTSpecial Weather StatementLIX54 min
Sep 26, 3:19 PM CDTFire Weather WatchLIX23 hr
Sep 26, 3:19 PM CDTRed Flag WarningLIX28 hr
Sep 27, 1:51 PM CDTFire Weather WatchLIX38 hr
Sep 27, 1:51 PM CDTRed Flag WarningLIX29 hr
Sep 29, 3:41 AM CDTRed Flag WarningLIX14 hr
Oct 12, 6:55 AM CDTSpecial Weather StatementLIX35 min
Oct 12, 7:55 AM CDTSpecial Weather StatementLIX35 min
Oct 16, 2:03 PM CDTFire Weather WatchLIX24 hr
Oct 17, 2:22 PM CDTRed Flag WarningLIX29 hr
Oct 29, 12:11 PM CDTMesoscale DiscussionSPC64 min
Oct 29, 12:26 PM CDTTornado WatchSPC9 hr
Oct 29, 3:28 PM CDTMesoscale DiscussionSPC92 min
Oct 29, 5:23 PM CDTMesoscale DiscussionSPC97 min
Nov 5, 11:21 AM CDTSevere Thunderstorm WarningLIX39 min
Nov 5, 11:45 AM CDTSpecial Weather StatementLIX30 min
Nov 5, 12:12 PM CDTSpecial Weather StatementLIX33 min
Nov 14, 9:00 PM CSTSpecial Weather StatementLIX45 min
Nov 26, 4:28 PM CSTSpecial Weather StatementLIX62 min
Nov 26, 5:09 PM CSTSevere Thunderstorm WarningLIX36 min
Nov 30, 4:34 AM CSTSpecial Weather StatementLIX56 min
Nov 30, 5:31 AM CSTAreal Flood AdvisoryLIX3 hr
Dec 14, 12:22 PM CSTTornado Watch PDSSPC10 hr
Dec 14, 2:53 PM CSTMesoscale DiscussionSPC97 min
Dec 14, 3:38 PM CSTSevere Thunderstorm WarningLIX52 min
Dec 14, 4:35 PM CSTMesoscale DiscussionSPC115 min
Dec 14, 4:57 PM CSTSevere Thunderstorm WarningLIX48 min
Dec 14, 5:00 PM CSTTornado WarningLIX45 min
Dec 14, 5:21 PM CSTAreal Flood AdvisoryLIX112 min
Dec 14, 5:42 PM CSTTornado WarningLIX31 min
Dec 30, 7:50 AM CSTAreal Flood AdvisoryLIX5 hr
Dec 30, 8:55 AM CSTSpecial Weather StatementLIX65 min
Dec 30, 9:21 AM CSTSevere Thunderstorm WarningLIX39 min
Dec 30, 9:39 AM CSTMesoscale DiscussionSPC3 hr
Dec 30, 9:54 AM CSTSpecial Weather StatementLIX66 min
Dec 30, 10:08 AM CSTSevere Thunderstorm WarningLIX52 min
Dec 30, 10:36 AM CSTAreal Flood AdvisoryLIX3 hr
Dec 30, 12:00 PM CSTFlash Flood WarningLIX3 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 archive20212023

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.