Alert archive / Mississippi / Union County

Weather alerts in Union County, Mississippi, 2013

98 weather alerts in 2013, 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 2013. Tap one for its archive.

Alerts
98
Warnings
15
Watches
14
Advisories
37
Busiest month
January17 alerts
Busiest day
January 30, 20137 alerts

Over time

By month

Warning verification

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

Union County, 2013

WarningsWith a reportFalse alarm ratioReportsInside a warningMean lead time
Tornado warnings00
Severe thunderstorm warnings8538%50%
Flash flood warnings20100%0

Each office's whole area, 2013

WarningsWith a reportFalse alarm ratioReportsInside a warningMean lead time
NWS Memphis, TN: tornado warnings37781%1267%10 min
NWS Memphis, TN: severe thunderstorm warnings2136968%19561%21 min
NWS Memphis, TN: flash flood warnings1232580%9957%71 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 11, 10:23 PM CSTFlash Flood WatchMEG37 hr
Jan 12, 10:17 AM CSTRiver Flood WarningMEG49 hr
Jan 13, 3:53 AM CSTMesoscale DiscussionSPC97 min
Jan 13, 11:30 AM CSTFlash Flood WatchMEG8 hr
Jan 14, 1:43 AM CSTWinter Weather AdvisoryMEG26 hr
Jan 14, 3:48 PM CSTWinter Storm WatchMEG12 hr
Jan 14, 11:51 PM CSTMesoscale DiscussionSPC6 hr
Jan 15, 4:03 AM CSTIce Storm WarningMEG26 hr
Jan 15, 4:03 AM CSTWinter Weather AdvisoryMEG26 hr
Jan 29, 2:26 AM CSTWind AdvisoryMEG24 hr
Jan 29, 7:31 PM CSTMesoscale DiscussionSPC119 min
Jan 29, 9:49 PM CSTMesoscale DiscussionSPC116 min
Jan 29, 10:07 PM CSTTornado WatchSPC6 hr
Jan 30, 1:41 AM CSTSevere Thunderstorm WarningMEG34 min
Jan 30, 2:01 AM CSTSevere Thunderstorm WarningMEG44 min
Jan 30, 3:00 AM CSTWind AdvisoryMEG15 hr
Jan 30, 3:03 AM CSTMesoscale DiscussionSPC57 min
Feb 2, 5:05 AM CSTWinter Weather AdvisoryMEG5 hr
Feb 2, 9:31 PM CSTFreezing Fog AdvisoryMEG10 hr
Feb 5, 9:03 PM CSTDense Fog AdvisoryMEG12 hr
Feb 18, 3:46 AM CSTWind AdvisoryMEG20 hr
Feb 22, 1:32 AM CSTDense Fog AdvisoryMEG8 hr
Mar 5, 3:45 AM CSTWind AdvisoryMEG16 hr
Mar 5, 7:32 AM CSTSpecial Weather StatementMEG43 min
Mar 9, 8:30 PM CSTWind AdvisoryMEG22 hr
Mar 18, 8:09 AM CDTSevere Thunderstorm WatchSPC7 hr
Mar 18, 12:44 PM CDTMesoscale DiscussionSPC91 min
Mar 18, 1:17 PM CDTSevere Thunderstorm WarningMEG43 min
Mar 23, 3:41 AM CDTMesoscale DiscussionSPC64 min
Mar 23, 5:45 PM CDTSevere Thunderstorm WatchSPC5 hr
Mar 24, 3:08 AM CDTWind AdvisoryMEG19 hr
Mar 30, 9:40 PM CDTDense Fog AdvisoryMEG11 hr
Mar 31, 11:05 PM CDTDense Fog AdvisoryMEG10 hr
Apr 11, 3:22 AM CDTFlash Flood WatchMEG13 hr
Apr 11, 8:57 AM CDTFlash Flood WarningMEG3 hr
Apr 11, 11:43 AM CDTRiver Flood WarningMEG40 hr
Apr 18, 4:37 AM CDTWind AdvisoryMEG13 hr
Apr 18, 5:52 PM CDTTornado WatchSPC5 hr
Apr 18, 8:46 PM CDTMesoscale DiscussionSPC59 min
Apr 19, 3:55 AM CDTFrost AdvisoryMEG28 hr
Apr 27, 1:55 PM CDTMesoscale DiscussionSPC2 hr
Apr 27, 3:47 PM CDTTornado WatchSPC10 hr
Apr 27, 8:10 PM CDTMesoscale DiscussionSPC65 min
Apr 27, 10:25 PM CDTMesoscale DiscussionSPC2 hr
Apr 29, 5:23 AM CDTDense Fog AdvisoryMEG4 hr
May 5, 11:33 AM CDTRiver Flood AdvisoryMEG24 hr
May 10, 5:33 PM CDTMesoscale DiscussionSPC117 min
May 21, 7:47 AM CDTMesoscale DiscussionSPC58 min
May 21, 2:42 PM CDTMesoscale DiscussionSPC63 min
May 21, 3:00 PM CDTTornado WatchSPC7 hr
May 21, 6:23 PM CDTMesoscale DiscussionSPC67 min
May 21, 9:22 PM CDTMesoscale DiscussionSPC23 min
May 30, 5:21 PM CDTSpecial Weather StatementMEG24 min
Jun 5, 4:39 AM CDTSpecial Weather StatementMEG51 min
Jun 5, 11:53 AM CDTMesoscale DiscussionSPC97 min
Jun 9, 7:30 PM CDTMesoscale DiscussionSPC60 min
Jun 27, 4:16 AM CDTHeat AdvisoryMEG16 hr
Jun 28, 5:18 AM CDTSevere Thunderstorm WatchSPC8 hr
Jun 28, 6:16 AM CDTMesoscale DiscussionSPC89 min
Jun 28, 11:37 AM CDTSevere Thunderstorm WarningMEG53 min
Jul 19, 3:29 AM CDTDense Fog AdvisoryMEG6 hr
Jul 22, 8:57 AM CDTSpecial Weather StatementMEG63 min
Jul 22, 10:20 AM CDTSpecial Weather StatementMEG55 min
Jul 22, 11:04 AM CDTMesoscale DiscussionSPC86 min
Aug 6, 12:33 PM CDTMesoscale DiscussionSPC117 min
Aug 6, 1:51 PM CDTSevere Thunderstorm WarningMEG39 min
Aug 6, 2:24 PM CDTAreal Flood AdvisoryMEG2 hr
Aug 6, 4:40 PM CDTSevere Thunderstorm WarningMEG50 min
Aug 8, 11:11 AM CDTHeat AdvisoryMEG16 hr
Aug 9, 11:00 AM CDTHeat AdvisoryMEG9 hr
Aug 11, 1:36 PM CDTMesoscale DiscussionSPC54 min
Aug 12, 3:52 PM CDTMesoscale DiscussionSPC83 min
Aug 12, 5:29 PM CDTFlash Flood WatchMEG6 hr
Aug 12, 8:43 PM CDTSpecial Weather StatementMEG47 min
Sep 27, 5:03 AM CDTDense Fog AdvisoryMEG3 hr
Oct 10, 7:58 AM CDTDense Fog AdvisoryMEG2 hr
Oct 10, 11:03 PM CDTDense Fog AdvisoryMEG10 hr
Oct 12, 11:16 PM CDTDense Fog AdvisoryMEG10 hr
Oct 20, 4:35 PM CDTFrost AdvisoryMEG15 hr
Oct 24, 3:29 PM CDTFrost AdvisoryMEG18 hr
Oct 25, 3:46 AM CDTFreeze WarningMEG29 hr
Oct 28, 4:11 AM CDTDense Fog AdvisoryMEG6 hr
Nov 11, 2:31 PM CSTWind AdvisoryMEG27 hr
Nov 16, 1:57 PM CSTWind AdvisoryMEG26 hr
Dec 2, 8:22 PM CSTDense Fog AdvisoryMEG15 hr
Dec 5, 3:01 AM CSTWinter Weather AdvisoryMEG40 hr
Dec 6, 10:00 AM CSTRiver Flood WarningMEG25 hr
Dec 7, 4:20 AM CSTWinter Weather AdvisoryMEG31 hr
Dec 9, 3:18 PM CSTWinter Weather AdvisoryMEG12 hr
Dec 20, 1:06 PM CSTWind AdvisoryMEG35 hr
Dec 21, 12:01 PM CSTTornado WatchSPC8 hr
Dec 21, 5:06 PM CSTMesoscale DiscussionSPC84 min
Dec 21, 5:46 PM CSTTornado WatchSPC6 hr
Dec 21, 6:59 PM CSTSevere Thunderstorm WarningMEG46 min
Dec 21, 7:38 PM CSTSevere Thunderstorm WarningMEG52 min
Dec 21, 7:40 PM CSTMesoscale DiscussionSPC95 min
Dec 21, 8:34 PM CSTFlash Flood WarningMEG3 hr
Dec 21, 10:33 PM CSTMesoscale DiscussionSPC87 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 archive20122014

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.