Alert archive / Mississippi / Union County

Weather alerts in Union 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.

Union County and its neighbors

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

Alerts
103
Warnings
21
Watches
15
Advisories
39
Busiest month
May23 alerts
Busiest day
May 14, 20245 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 1 tornado reports fell inside a warning.

Union County, 2024

WarningsWith a reportFalse alarm ratioReportsInside a warningMean lead time
Tornado warnings010%
Severe thunderstorm warnings11555%367%18 min
Flash flood warnings110%0

Each office's whole area, 2024

WarningsWith a reportFalse alarm ratioReportsInside a warningMean lead time
NWS Memphis, TN: tornado warnings20195%714%18 min
NWS Memphis, TN: severe thunderstorm warnings21012740%25891%20 min
NWS Memphis, TN: flash flood warnings321747%3678%49 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, 2:16 PM CSTWind AdvisoryMEG57 hr
Jan 11, 2:26 AM CSTWind AdvisoryMEG45 hr
Jan 12, 3:33 AM CSTMesoscale DiscussionSPC87 min
Jan 12, 3:57 AM CSTTornado WatchSPC7 hr
Jan 12, 7:55 AM CSTMesoscale DiscussionSPC95 min
Jan 12, 2:54 PM CSTWinter Storm WatchMEG36 hr
Jan 13, 2:48 PM CSTWinter Storm WarningMEG54 hr
Jan 14, 3:05 AM CSTWind Chill AdvisoryMEG3 days
Jan 14, 6:48 PM CSTMesoscale DiscussionSPC5 hr
Jan 15, 7:45 AM CSTMesoscale DiscussionSPC4 hr
Jan 15, 11:17 AM CSTMesoscale DiscussionSPC4 hr
Jan 17, 2:58 PM CSTWinter Weather AdvisoryMEG28 hr
Jan 18, 3:02 PM CSTWind Chill AdvisoryMEG66 hr
Jan 18, 5:49 PM CSTFreezing Fog AdvisoryMEG13 hr
Jan 23, 3:08 AM CSTFlood WatchMEG59 hr
Jan 24, 2:12 PM CSTRiver Flood WarningMEG20 hr
Jan 24, 3:06 PM CSTDense Fog AdvisoryMEG20 hr
Jan 25, 9:04 PM CSTDense Fog AdvisoryMEG13 hr
Feb 26, 1:13 PM CSTWind AdvisoryMEG44 hr
Feb 28, 7:53 AM CSTSevere Thunderstorm WarningMEG52 min
Mar 3, 1:53 AM CSTDense Fog AdvisoryMEG7 hr
Mar 4, 5:49 AM CSTDense Fog AdvisoryMEG2 hr
Mar 14, 3:16 PM CDTMesoscale DiscussionSPC119 min
Mar 15, 3:33 AM CDTSevere Thunderstorm WarningMEG42 min
Mar 15, 9:13 AM CDTRiver Flood WarningMEG46 hr
Mar 17, 3:25 AM CDTFreeze WatchMEG18 hr
Mar 17, 9:15 PM CDTFreeze WarningMEG36 hr
Mar 24, 2:44 AM CDTHigh Wind WatchMEG12 hr
Mar 24, 2:55 PM CDTWind AdvisoryMEG33 hr
Mar 27, 1:58 PM CDTFrost AdvisoryMEG19 hr
Apr 2, 2:49 PM CDTMesoscale DiscussionSPC116 min
Apr 2, 3:08 PM CDTTornado WatchSPC6 hr
Apr 2, 3:14 PM CDTSevere Thunderstorm WarningMEG31 min
Apr 8, 3:00 PM CDTFlood WatchMEG64 hr
Apr 10, 12:36 PM CDTRiver Flood WarningMEG29 hr
Apr 10, 2:45 PM CDTWind AdvisoryMEG26 hr
Apr 21, 9:51 AM CDTFrost AdvisoryMEG22 hr
Apr 29, 11:31 PM CDTDense Fog AdvisoryMEG8 hr
May 3, 9:13 PM CDTDense Fog AdvisoryMEG11 hr
May 5, 1:16 PM CDTMesoscale DiscussionSPC119 min
May 5, 10:19 PM CDTMesoscale DiscussionSPC86 min
May 6, 1:45 AM CDTSevere Thunderstorm WarningMEG45 min
May 6, 2:07 AM CDTSevere Thunderstorm WarningMEG38 min
May 9, 2:10 AM CDTMesoscale DiscussionSPC2 hr
May 9, 3:02 AM CDTTornado WatchSPC7 hr
May 9, 5:27 AM CDTSpecial Weather StatementMEG33 min
May 14, 12:44 PM CDTMesoscale DiscussionSPC61 min
May 14, 1:51 PM CDTSevere Thunderstorm WatchSPC6 hr
May 14, 2:45 PM CDTSpecial Weather StatementMEG30 min
May 14, 3:13 PM CDTSpecial Weather StatementMEG32 min
May 14, 5:24 PM CDTMesoscale DiscussionSPC96 min
May 18, 11:07 PM CDTDense Fog AdvisoryMEG9 hr
May 22, 11:46 AM CDTSevere Thunderstorm WatchSPC6 hr
May 24, 8:21 AM CDTSpecial Weather StatementMEG24 min
May 24, 11:03 AM CDTFlood WatchMEG64 hr
May 24, 3:58 PM CDTMesoscale DiscussionSPC92 min
May 27, 12:52 AM CDTMesoscale DiscussionSPC113 min
May 27, 1:10 AM CDTTornado WatchSPC5 hr
May 27, 2:08 AM CDTSevere Thunderstorm WarningMEG52 min
May 27, 2:47 AM CDTMesoscale DiscussionSPC118 min
May 27, 2:52 AM CDTSevere Thunderstorm WarningMEG68 min
Jun 5, 5:22 PM CDTAreal Flood AdvisoryMEG3 hr
Jun 5, 5:32 PM CDTFlash Flood WarningMEG3 hr
Jun 9, 3:59 PM CDTSevere Thunderstorm WatchSPC6 hr
Jun 22, 1:58 PM CDTHeat AdvisoryMEG30 hr
Jun 24, 2:54 AM CDTHeat AdvisoryMEG41 hr
Jun 26, 12:45 PM CDTMesoscale DiscussionSPC2 hr
Jun 28, 2:55 PM CDTHeat AdvisoryMEG30 hr
Jun 29, 2:56 PM CDTHeat AdvisoryMEG29 hr
Jul 2, 12:27 PM CDTExcessive Heat WarningMEG32 hr
Jul 2, 12:27 PM CDTHeat AdvisoryMEG14 hr
Jul 3, 3:58 AM CDTExcessive Heat WarningMEG40 hr
Jul 3, 3:58 AM CDTHeat AdvisoryMEG22 hr
Jul 8, 7:57 PM CDTSpecial Weather StatementMEG33 min
Jul 8, 8:30 PM CDTSpecial Weather StatementMEG30 min
Jul 8, 8:34 PM CDTSevere Thunderstorm WarningMEG41 min
Jul 15, 1:56 PM CDTHeat AdvisoryMEG31 hr
Jul 28, 3:13 AM CDTHeat AdvisoryMEG42 hr
Jul 28, 4:47 PM CDTAreal Flood AdvisoryMEG118 min
Jul 29, 3:27 AM CDTHeat AdvisoryMEG41 hr
Jul 30, 3:05 AM CDTExcessive Heat WarningMEG41 hr
Jul 30, 3:05 AM CDTHeat AdvisoryMEG32 hr
Jul 31, 2:27 AM CDTExcessive Heat WarningMEG42 hr
Jul 31, 2:27 AM CDTHeat AdvisoryMEG31 hr
Aug 1, 2:37 PM CDTHeat AdvisoryMEG28 hr
Aug 14, 2:30 PM CDTHeat AdvisoryMEG55 hr
Aug 29, 2:52 AM CDTHeat AdvisoryMEG17 hr
Aug 29, 4:24 PM CDTSpecial Weather StatementMEG36 min
Aug 29, 4:58 PM CDTSpecial Weather StatementMEG32 min
Aug 30, 5:07 PM CDTSevere Thunderstorm WarningMEG53 min
Aug 30, 5:57 PM CDTSpecial Weather StatementMEG33 min
Aug 30, 6:47 PM CDTSpecial Weather StatementMEG28 min
Sep 11, 3:25 AM CDTFlood WatchMEG3 days
Sep 11, 2:56 PM CDTWind AdvisoryMEG33 hr
Sep 14, 3:05 AM CDTFlood WatchMEG25 hr
Sep 17, 2:28 AM CDTDense Fog AdvisoryMEG6 hr
Sep 24, 2:15 PM CDTSevere Thunderstorm WarningMEG45 min
Sep 24, 3:01 PM CDTMesoscale DiscussionSPC119 min
Sep 30, 1:19 AM CDTDense Fog AdvisoryMEG8 hr
Nov 10, 9:18 PM CSTDense Fog AdvisoryMEG8 hr
Nov 15, 4:04 AM CSTDense Fog AdvisoryMEG5 hr
Dec 16, 8:41 PM CSTSevere Thunderstorm WarningMEG39 min
Dec 16, 9:24 PM CSTSpecial Weather StatementMEG36 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 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.