Alert archive / Mississippi / Union County

Weather alerts in Union County, Mississippi, 2019

141 weather alerts in 2019, 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 2019. Tap one for its archive.

Alerts
141
Warnings
41
Watches
17
Advisories
44
Busiest month
June29 alerts
Busiest day
February 23, 201910 alerts

Over time

By month

Warning verification

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

2 of 5 tornado warnings covering Union County in 2019 had a tornado report inside them; 1 of 1 tornado reports fell inside a warning, on average 21 minutes after it went out.

Union County, 2019

WarningsWith a reportFalse alarm ratioReportsInside a warningMean lead time
Tornado warnings5260%1100%21 min
Severe thunderstorm warnings131023%850%18 min
Flash flood warnings7271%0

Each office's whole area, 2019

WarningsWith a reportFalse alarm ratioReportsInside a warningMean lead time
NWS Memphis, TN: tornado warnings43979%3342%14 min
NWS Memphis, TN: severe thunderstorm warnings1617653%24771%23 min
NWS Memphis, TN: flash flood warnings471666%5058%69 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 5, 2:33 PM CSTDense Fog AdvisoryMEG16 hr
Jan 17, 9:36 PM CSTDense Fog AdvisoryMEG11 hr
Jan 18, 1:51 PM CSTWind AdvisoryMEG37 hr
Jan 20, 3:20 AM CSTWind AdvisoryMEG6 hr
Jan 27, 2:48 PM CSTWinter Weather AdvisoryMEG37 hr
Feb 3, 3:53 AM CSTDense Fog AdvisoryMEG6 hr
Feb 5, 5:08 AM CSTDense Fog AdvisoryMEG25 hr
Feb 18, 9:08 AM CSTRiver Flood WarningMEG7 days
Feb 18, 2:48 PM CSTFlash Flood WatchMEG37 hr
Feb 20, 3:37 AM CSTAreal Flood AdvisoryMEG113 min
Feb 20, 4:06 AM CSTFlash Flood WatchMEG9 hr
Feb 20, 4:38 AM CSTAreal Flood AdvisoryMEG112 min
Feb 20, 7:27 AM CSTAreal Flood AdvisoryMEG2 hr
Feb 20, 9:36 AM CSTAreal Flood AdvisoryMEG114 min
Feb 20, 11:40 AM CSTAreal Flood WarningMEG6 hr
Feb 20, 3:34 PM CSTFlash Flood WatchMEG3 days
Feb 20, 10:11 PM CSTDense Fog AdvisoryMEG11 hr
Feb 22, 7:06 AM CSTFlash Flood WarningMEG9 hr
Feb 22, 8:39 AM CSTFlash Flood WarningMEG3 hr
Feb 22, 11:43 AM CSTFlash Flood WarningMEG6 hr
Feb 22, 3:20 PM CSTAreal Flood WarningMEG6 hr
Feb 22, 3:22 PM CSTAreal Flood WarningMEG6 hr
Feb 22, 9:13 PM CSTAreal Flood WarningMEG6 hr
Feb 23, 12:45 AM CSTFlash Flood WarningMEG3 hr
Feb 23, 1:41 AM CSTFlash Flood WarningMEG3 hr
Feb 23, 3:39 AM CSTFlash Flood WarningMEG3 hr
Feb 23, 4:39 AM CSTAreal Flood WarningMEG18 hr
Feb 23, 6:40 AM CSTAreal Flood WarningMEG18 hr
Feb 23, 12:26 PM CSTTornado WatchSPC8 hr
Feb 23, 3:39 PM CSTSpecial Weather StatementMEG51 min
Feb 23, 3:54 PM CSTSevere Thunderstorm WarningMEG36 min
Feb 23, 4:04 PM CSTTornado WarningMEG26 min
Feb 27, 11:43 PM CSTSpecial Weather StatementMEG32 min
Mar 9, 10:32 AM CSTTornado WatchSPC8 hr
Mar 9, 1:27 PM CSTMesoscale DiscussionSPC2 hr
Mar 12, 3:10 PM CDTWind AdvisoryMEG52 hr
Mar 14, 5:28 AM CDTTornado WatchSPC7 hr
Mar 14, 7:14 AM CDTMesoscale DiscussionSPC2 hr
Mar 14, 10:32 AM CDTMesoscale DiscussionSPC58 min
Mar 14, 11:18 AM CDTSpecial Weather StatementMEG27 min
Mar 14, 11:47 AM CDTMesoscale DiscussionSPC88 min
Mar 14, 12:11 PM CDTTornado WatchSPC7 hr
Mar 30, 3:21 AM CDTFreeze WatchMEG24 hr
Mar 30, 3:52 PM CDTMesoscale DiscussionSPC83 min
Mar 31, 3:01 AM CDTFreeze WarningMEG30 hr
Apr 5, 4:54 AM CDTDense Fog AdvisoryMEG4 hr
Apr 7, 8:11 AM CDTSpecial Weather StatementMEG49 min
Apr 7, 1:13 PM CDTMesoscale DiscussionSPC2 hr
Apr 7, 2:02 PM CDTSpecial Weather StatementMEG43 min
Apr 7, 8:05 PM CDTRiver Flood WarningMEG37 hr
Apr 11, 3:48 AM CDTWind AdvisoryMEG15 hr
Apr 13, 6:35 AM CDTWind AdvisoryMEG18 hr
Apr 13, 10:21 PM CDTTornado WarningMEG39 min
Apr 13, 10:52 PM CDTAreal Flood AdvisoryMEG4 hr
Apr 13, 11:02 PM CDTSpecial Weather StatementMEG28 min
Apr 14, 2:25 PM CDTRiver Flood WarningMEG22 hr
Apr 17, 3:39 PM CDTFlash Flood WatchMEG28 hr
Apr 18, 12:09 PM CDTRiver Flood WarningMEG19 hr
May 8, 10:30 PM CDTSpecial Weather StatementMEG45 min
May 9, 12:48 PM CDTRiver Flood WarningMEG37 hr
Jun 7, 12:05 PM CDTFlash Flood WatchMEG15 hr
Jun 16, 11:53 AM CDTMesoscale DiscussionSPC2 hr
Jun 16, 2:11 PM CDTSpecial Weather StatementMEG34 min
Jun 17, 1:57 PM CDTMesoscale DiscussionSPC63 min
Jun 17, 3:57 PM CDTSpecial Weather StatementMEG33 min
Jun 17, 4:42 PM CDTAreal Flood AdvisoryMEG3 hr
Jun 19, 9:58 PM CDTMesoscale DiscussionSPC62 min
Jun 19, 10:24 PM CDTSevere Thunderstorm WatchSPC7 hr
Jun 20, 12:10 AM CDTSevere Thunderstorm WarningMEG50 min
Jun 20, 12:54 AM CDTSpecial Weather StatementMEG51 min
Jun 21, 5:14 PM CDTMesoscale DiscussionSPC91 min
Jun 21, 9:02 PM CDTMesoscale DiscussionSPC118 min
Jun 22, 2:09 PM CDTSpecial Weather StatementMEG36 min
Jun 22, 2:50 PM CDTSpecial Weather StatementMEG25 min
Jun 22, 3:59 PM CDTSpecial Weather StatementMEG46 min
Jun 22, 5:11 PM CDTSevere Thunderstorm WarningMEG34 min
Jun 22, 5:45 PM CDTSevere Thunderstorm WarningMEG26 min
Jun 22, 5:49 PM CDTMesoscale DiscussionSPC56 min
Jun 23, 4:58 PM CDTMesoscale DiscussionSPC92 min
Jun 23, 7:07 PM CDTSpecial Weather StatementMEG38 min
Jun 24, 1:26 AM CDTSpecial Weather StatementMEG64 min
Jun 24, 2:46 AM CDTAreal Flood AdvisoryMEG4 hr
Jun 24, 4:19 AM CDTAreal Flood AdvisoryMEG116 min
Jun 24, 4:33 AM CDTSevere Thunderstorm WarningMEG42 min
Jun 24, 5:08 AM CDTSpecial Weather StatementMEG52 min
Jun 24, 8:12 AM CDTRiver Flood WarningMEG25 hr
Jun 27, 10:02 AM CDTMesoscale DiscussionSPC118 min
Jun 27, 11:43 AM CDTSevere Thunderstorm WarningMEG47 min
Jun 28, 4:13 AM CDTDense Fog AdvisoryMEG5 hr
Jul 8, 2:43 PM CDTHeat AdvisoryMEG29 hr
Jul 9, 5:05 PM CDTHeat AdvisoryMEG26 hr
Jul 10, 3:24 PM CDTHeat AdvisoryMEG29 hr
Jul 13, 3:39 AM CDTFlash Flood WatchMEG4 days
Jul 15, 8:23 AM CDTAreal Flood AdvisoryMEG3 hr
Jul 16, 12:19 PM CDTRiver Flood WarningMEG49 hr
Jul 16, 1:34 PM CDTMesoscale DiscussionSPC2 hr
Jul 17, 3:09 PM CDTHeat AdvisoryMEG53 hr
Jul 19, 10:03 PM CDTAreal Flood AdvisoryMEG57 min
Aug 5, 2:47 AM CDTDense Fog AdvisoryMEG6 hr
Aug 7, 1:23 AM CDTMesoscale DiscussionSPC3 hr
Aug 8, 2:06 AM CDTDense Fog AdvisoryMEG7 hr
Aug 9, 10:51 PM CDTDense Fog AdvisoryMEG10 hr
Aug 10, 3:54 AM CDTHeat AdvisoryMEG60 hr
Aug 10, 11:09 PM CDTDense Fog AdvisoryMEG10 hr
Aug 11, 3:21 AM CDTExcessive Heat WatchMEG37 hr
Aug 11, 3:21 AM CDTExcessive Heat WarningMEG65 hr
Aug 13, 6:55 PM CDTMesoscale DiscussionSPC65 min
Aug 19, 3:59 AM CDTHeat AdvisoryMEG64 hr
Aug 23, 4:30 PM CDTAreal Flood AdvisoryMEG83 min
Aug 23, 5:14 PM CDTAreal Flood AdvisoryMEG3 hr
Aug 24, 5:29 PM CDTSpecial Weather StatementMEG46 min
Aug 24, 5:42 PM CDTAreal Flood AdvisoryMEG2 hr
Aug 25, 5:38 PM CDTSpecial Weather StatementMEG52 min
Aug 25, 5:53 PM CDTAreal Flood AdvisoryMEG2 hr
Oct 9, 1:01 AM CDTDense Fog AdvisoryMEG10 hr
Oct 19, 11:55 PM CDTDense Fog AdvisoryMEG9 hr
Oct 21, 3:06 AM CDTTornado WatchSPC6 hr
Oct 25, 3:44 AM CDTFlash Flood WatchMEG34 hr
Oct 26, 6:03 AM CDTWind AdvisoryMEG9 hr
Oct 26, 10:35 AM CDTSevere Thunderstorm WarningMEG40 min
Oct 26, 11:04 AM CDTSevere Thunderstorm WarningMEG41 min
Oct 26, 11:04 AM CDTMesoscale DiscussionSPC86 min
Oct 26, 11:45 AM CDTSevere Thunderstorm WarningMEG45 min
Oct 30, 3:07 PM CDTFreeze WatchMEG12 hr
Oct 31, 3:19 AM CDTFreeze WarningMEG30 hr
Nov 11, 4:25 AM CSTWind AdvisoryMEG22 hr
Nov 11, 6:06 PM CSTWinter Weather AdvisoryMEG9 hr
Nov 30, 2:28 PM CSTSevere Thunderstorm WarningMEG47 min
Nov 30, 2:31 PM CSTMesoscale DiscussionSPC59 min
Nov 30, 3:06 PM CSTSevere Thunderstorm WarningMEG39 min
Nov 30, 8:02 PM CSTFlash Flood WarningMEG3 hr
Dec 7, 9:15 PM CSTDense Fog AdvisoryMEG12 hr
Dec 13, 8:13 PM CSTDense Fog AdvisoryMEG14 hr
Dec 16, 1:52 PM CSTMesoscale DiscussionSPC83 min
Dec 16, 2:22 PM CSTTornado WatchSPC8 hr
Dec 16, 3:10 PM CSTMesoscale DiscussionSPC65 min
Dec 16, 3:12 PM CSTTornado WarningMEG33 min
Dec 16, 3:17 PM CSTSevere Thunderstorm WarningMEG28 min
Dec 16, 3:28 PM CSTTornado WarningMEG32 min
Dec 16, 3:42 PM CSTSevere Thunderstorm WarningMEG48 min
Dec 16, 3:50 PM CSTTornado WarningMEG25 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 archive20182020

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.