Alert archive / Mississippi / Grenada County

Weather alerts in Grenada County, Mississippi, 2024

103 weather alerts in 2024, from the National Weather Service and the Storm Prediction Center. An alert counts here when it covered this county.

Grenada County and its neighbors

Each county as a circle sized by its count in 2024. Tap one for its archive.

Alerts
103
Warnings
27
Watches
13
Advisories
33
Busiest month
January20 alerts
Busiest day
January 12, 20246 alerts

Over time

By month

Warning verification

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

Grenada County, 2024

WarningsWith a reportFalse alarm ratioReportsInside a warningMean lead time
Tornado warnings00
Severe thunderstorm warnings8625%6100%28 min
Flash flood warnings2150%20%

Each office's whole area, 2024

WarningsWith a reportFalse alarm ratioReportsInside a warningMean lead time
NWS Jackson, MS: tornado warnings512159%7576%22 min
NWS Jackson, MS: severe thunderstorm warnings30017442%63176%27 min
NWS Jackson, MS: flash flood warnings713846%11485%127 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 7, 2:34 PM CSTWind AdvisoryJAN51 hr
Jan 11, 3:31 AM CSTWind AdvisoryJAN38 hr
Jan 12, 3:33 AM CSTMesoscale DiscussionSPC87 min
Jan 12, 3:57 AM CSTTornado WatchSPC7 hr
Jan 12, 6:50 AM CSTSevere Thunderstorm WarningJAN40 min
Jan 12, 7:37 AM CSTSevere Thunderstorm WarningJAN68 min
Jan 12, 7:55 AM CSTMesoscale DiscussionSPC95 min
Jan 12, 2:37 PM CSTWinter Storm WatchJAN44 hr
Jan 13, 1:54 PM CSTWinter Storm WarningJAN63 hr
Jan 14, 6:48 PM CSTMesoscale DiscussionSPC5 hr
Jan 15, 3:39 AM CSTWind Chill AdvisoryJAN32 hr
Jan 15, 3:50 AM CSTHard Freeze WarningJAN54 hr
Jan 15, 7:45 AM CSTMesoscale DiscussionSPC4 hr
Jan 15, 11:17 AM CSTMesoscale DiscussionSPC4 hr
Jan 18, 3:39 AM CSTHard Freeze WarningJAN3 days
Jan 19, 3:56 AM CSTWind Chill AdvisoryJAN32 hr
Jan 20, 2:48 AM CSTWind Chill AdvisoryJAN30 hr
Jan 23, 3:37 AM CSTFlood WatchJAN57 hr
Jan 25, 3:27 AM CSTDense Fog AdvisoryJAN7 hr
Jan 25, 10:24 PM CSTDense Fog AdvisoryJAN14 hr
Feb 11, 11:37 AM CSTSevere Thunderstorm WatchSPC6 hr
Feb 26, 2:17 PM CSTWind AdvisoryJAN40 hr
Mar 1, 8:00 PM CSTDense Fog AdvisoryJAN14 hr
Mar 5, 9:44 PM CSTDense Fog AdvisoryJAN12 hr
Mar 7, 2:12 AM CSTDense Fog AdvisoryJAN8 hr
Mar 14, 3:16 PM CDTMesoscale DiscussionSPC119 min
Mar 15, 2:57 AM CDTSpecial Weather StatementJAN63 min
Mar 17, 2:32 AM CDTFreeze WatchJAN13 hr
Mar 17, 3:10 PM CDTFreeze WarningJAN42 hr
Mar 24, 3:05 AM CDTWind AdvisoryJAN46 hr
Mar 25, 8:33 PM CDTSpecial Weather StatementJAN57 min
Apr 8, 9:56 AM CDTFlood WatchJAN57 hr
Apr 8, 11:19 AM CDTSevere Thunderstorm WarningJAN56 min
Apr 8, 12:13 PM CDTSpecial Weather StatementJAN32 min
Apr 8, 12:53 PM CDTFlash Flood WarningJAN52 min
Apr 10, 8:04 AM CDTFlash Flood WarningJAN8 hr
Apr 10, 1:39 PM CDTSpecial Weather StatementJAN81 min
Apr 10, 3:13 PM CDTWind AdvisoryJAN28 hr
Apr 30, 4:46 AM CDTDense Fog AdvisoryJAN4 hr
May 3, 8:58 PM CDTDense Fog AdvisoryJAN12 hr
May 5, 1:16 PM CDTMesoscale DiscussionSPC119 min
May 5, 10:19 PM CDTMesoscale DiscussionSPC86 min
May 9, 6:24 PM CDTMesoscale DiscussionSPC96 min
May 14, 4:30 PM CDTSpecial Weather StatementJAN60 min
May 24, 12:17 PM CDTMesoscale DiscussionSPC88 min
May 24, 3:58 PM CDTMesoscale DiscussionSPC92 min
May 24, 6:17 PM CDTSevere Thunderstorm WatchSPC5 hr
May 27, 12:52 AM CDTMesoscale DiscussionSPC113 min
May 27, 1:10 AM CDTTornado WatchSPC5 hr
May 27, 2:47 AM CDTMesoscale DiscussionSPC118 min
Jun 3, 6:58 PM CDTSevere Thunderstorm WatchSPC7 hr
Jun 3, 9:23 PM CDTMesoscale DiscussionSPC2 hr
Jun 9, 3:47 PM CDTMesoscale DiscussionSPC118 min
Jun 9, 3:59 PM CDTSevere Thunderstorm WatchSPC6 hr
Jun 9, 7:19 PM CDTMesoscale DiscussionSPC86 min
Jun 9, 9:16 PM CDTMesoscale DiscussionSPC89 min
Jun 23, 1:37 PM CDTHeat AdvisoryJAN24 hr
Jun 24, 2:25 AM CDTHeat AdvisoryJAN42 hr
Jun 24, 1:34 PM CDTExcessive Heat WarningJAN6 hr
Jun 25, 2:34 AM CDTExcessive Heat WarningJAN17 hr
Jun 25, 9:58 PM CDTHeat AdvisoryJAN21 hr
Jun 26, 12:45 PM CDTMesoscale DiscussionSPC2 hr
Jun 26, 2:39 PM CDTSevere Thunderstorm WarningJAN81 min
Jun 26, 2:51 PM CDTSevere Thunderstorm WatchSPC4 hr
Jun 26, 2:53 PM CDTSevere Thunderstorm WarningJAN97 min
Jun 28, 1:34 PM CDTExcessive Heat WarningJAN54 hr
Jul 2, 2:22 PM CDTExcessive Heat WarningJAN30 hr
Jul 3, 3:35 AM CDTExcessive Heat WarningJAN40 hr
Jul 5, 2:11 AM CDTHeat AdvisoryJAN17 hr
Jul 8, 2:23 AM CDTHeat AdvisoryJAN18 hr
Jul 14, 1:56 PM CDTHeat AdvisoryJAN29 hr
Jul 15, 2:10 PM CDTHeat AdvisoryJAN30 hr
Jul 16, 1:06 PM CDTHeat AdvisoryJAN30 hr
Jul 28, 1:18 PM CDTHeat AdvisoryJAN30 hr
Jul 29, 1:33 PM CDTExcessive Heat WarningJAN29 hr
Jul 30, 2:42 PM CDTExcessive Heat WarningJAN28 hr
Jul 31, 2:13 PM CDTExcessive Heat WarningJAN29 hr
Aug 1, 4:02 AM CDTExcessive Heat WarningJAN39 hr
Aug 4, 1:11 PM CDTHeat AdvisoryJAN30 hr
Aug 6, 1:12 PM CDTHeat AdvisoryJAN30 hr
Aug 14, 2:35 PM CDTHeat AdvisoryJAN3 days
Aug 15, 3:31 AM CDTExcessive Heat WarningJAN64 hr
Aug 17, 1:48 PM CDTExcessive Heat WarningJAN30 hr
Aug 18, 2:53 PM CDTMesoscale DiscussionSPC67 min
Aug 29, 2:39 AM CDTHeat AdvisoryJAN15 hr
Aug 29, 5:00 PM CDTSpecial Weather StatementJAN45 min
Aug 29, 5:20 PM CDTSevere Thunderstorm WarningJAN40 min
Aug 29, 6:00 PM CDTSpecial Weather StatementJAN45 min
Sep 10, 2:18 PM CDTFlood WatchJAN47 hr
Sep 11, 2:35 PM CDTWind AdvisoryJAN28 hr
Sep 24, 6:09 PM CDTSevere Thunderstorm WarningJAN25 min
Sep 30, 2:33 AM CDTDense Fog AdvisoryJAN7 hr
Nov 22, 2:23 AM CSTFreeze WarningJAN30 hr
Nov 27, 10:13 PM CSTSpecial Weather StatementJAN47 min
Nov 28, 2:05 PM CSTFreeze WarningJAN42 hr
Dec 16, 11:20 PM CSTSpecial Weather StatementJAN40 min
Dec 16, 11:52 PM CSTDense Fog AdvisoryJAN9 hr
Dec 27, 9:11 PM CSTDense Fog AdvisoryJAN12 hr
Dec 28, 11:15 AM CSTMesoscale DiscussionSPC60 min
Dec 28, 2:17 PM CSTTornado Watch PDSSPC8 hr
Dec 28, 6:04 PM CSTMesoscale DiscussionSPC86 min
Dec 28, 7:31 PM CSTSevere Thunderstorm WarningJAN59 min
Dec 29, 9:01 PM CSTDense Fog AdvisoryJAN13 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 archive20232025

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.