Alert archive / Mississippi / Union County

Weather alerts in Union County, Mississippi, 2025

163 weather alerts in 2025, 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 2025. Tap one for its archive.

Alerts: 163
Warnings: 45
Watches: 27
Advisories: 40
Busiest month: April40 alerts
Busiest day: March 15, 202513 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 10 tornado warnings covering Union County in 2025 had a tornado report inside them.

Union County, 2025

	Warnings	With a report	False alarm ratio	Reports	Inside a warning	Mean lead time
Tornado warnings	10	0	100%	0
Severe thunderstorm warnings	21	16	24%	11	82%	21 min
Flash flood warnings	3	3	0%	1	100%	102 min

Each office's whole area, 2025

	Warnings	With a report	False alarm ratio	Reports	Inside a warning	Mean lead time
NWS Memphis, TN: tornado warnings	157	25	84%	44	73%	21 min
NWS Memphis, TN: severe thunderstorm warnings	412	269	35%	652	80%	23 min
NWS Memphis, TN: flash flood warnings	85	48	44%	125	86%	125 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.

Issued	Product	Office	Lasted
Jan 5, 3:31 AM CST	Wind Advisory	MEG	18 hr
Jan 5, 1:36 PM CST	Tornado Watch	SPC	9 hr
Jan 7, 1:59 PM CST	Winter Storm Watch	MEG	24 hr
Jan 8, 1:38 PM CST	Winter Storm Warning	MEG	55 hr
Jan 9, 10:03 PM CST	Mesoscale Discussion	SPC	5 hr
Jan 10, 4:19 AM CST	Mesoscale Discussion	SPC	5 hr
Jan 18, 2:40 PM CST	Cold Weather Advisory	MEG	45 hr
Jan 21, 2:00 AM CST	Cold Weather Advisory	MEG	31 hr
Feb 11, 3:37 PM CST	River Flood Warning	MEG	6 days
Feb 13, 1:28 AM CST	Flood Watch	MEG	3 days
Feb 15, 4:00 PM CST	Tornado Watch	SPC	7 hr
Feb 16, 12:14 AM CST	Areal Flood Advisory	MEG	108 min
Feb 17, 2:43 PM CST	Winter Weather Advisory	MEG	40 hr
Feb 18, 5:35 AM CST	Cold Weather Advisory	MEG	30 hr
Feb 18, 1:39 PM CST	Cold Weather Advisory	MEG	46 hr
Feb 19, 2:19 AM CST	Extreme Cold Warning	MEG	34 hr
Feb 19, 2:07 PM CST	Cold Weather Advisory	MEG	45 hr
Mar 1, 12:41 PM CST	Red Flag Warning	MEG	5 hr
Mar 3, 1:40 AM CST	Wind Advisory	MEG	64 hr
Mar 13, 7:59 AM CDT	Mesoscale Discussion	SPC	91 min
Mar 13, 2:34 PM CDT	Special Weather Statement	MEG	26 min
Mar 13, 3:01 PM CDT	Special Weather Statement	MEG	14 min
Mar 14, 10:41 AM CDT	Flood Watch	MEG	33 hr
Mar 14, 7:34 PM CDT	Tornado Watch PDS	SPC	10 hr
Mar 14, 11:50 PM CDT	Mesoscale Discussion	SPC	115 min
Mar 15, 12:49 AM CDT	Mesoscale Discussion	SPC	86 min
Mar 15, 5:58 AM CDT	Tornado Watch	SPC	7 hr
Mar 15, 8:04 AM CDT	Mesoscale Discussion	SPC	86 min
Mar 15, 9:25 AM CDT	Mesoscale Discussion	SPC	95 min
Mar 15, 10:07 AM CDT	Mesoscale Discussion	SPC	113 min
Mar 15, 10:31 AM CDT	Tornado Watch PDS	SPC	9 hr
Mar 15, 11:13 AM CDT	Severe Thunderstorm Warning	MEG	47 min
Mar 15, 11:20 AM CDT	Mesoscale Discussion	SPC	85 min
Mar 15, 12:31 PM CDT	Areal Flood Advisory	MEG	3 hr
Mar 15, 12:55 PM CDT	Severe Thunderstorm Warning	MEG	16 min
Mar 15, 1:02 PM CDT	Flash Flood Warning	MEG	5 hr
Mar 18, 1:27 PM CDT	Wind Advisory	MEG	35 hr
Mar 19, 6:34 PM CDT	Mesoscale Discussion	SPC	116 min
Mar 23, 3:16 PM CDT	Tornado Watch	SPC	8 hr
Mar 23, 4:53 PM CDT	Severe Thunderstorm Warning	MEG	37 min
Mar 30, 11:05 PM CDT	Tornado Watch	SPC	6 hr
Mar 31, 1:15 AM CDT	Severe Thunderstorm Warning	MEG	45 min
Mar 31, 2:30 PM CDT	Flood Watch	MEG	6 days
Apr 1, 1:40 PM CDT	Wind Advisory	MEG	34 hr
Apr 2, 2:52 PM CDT	Tornado Watch PDS	SPC	9 hr
Apr 2, 3:18 PM CDT	Severe Thunderstorm Warning	MEG	57 min
Apr 2, 3:39 PM CDT	Mesoscale Discussion	SPC	2 hr
Apr 2, 11:35 PM CDT	Tornado Watch	SPC	8 hr
Apr 3, 11:22 AM CDT	Mesoscale Discussion	SPC	113 min
Apr 3, 12:52 PM CDT	Tornado Watch	SPC	9 hr
Apr 3, 2:23 PM CDT	Mesoscale Discussion	SPC	97 min
Apr 3, 4:14 PM CDT	Severe Thunderstorm Warning	MEG	46 min
Apr 4, 11:57 AM CDT	River Flood Warning	MEG	4 days
Apr 4, 12:57 PM CDT	Mesoscale Discussion	SPC	2 hr
Apr 4, 2:56 PM CDT	Tornado Watch	SPC	7 hr
Apr 5, 9:56 AM CDT	Tornado Watch	SPC	9 hr
Apr 5, 3:14 PM CDT	Mesoscale Discussion	SPC	2 hr
Apr 5, 4:50 PM CDT	Tornado Watch	SPC	7 hr
Apr 5, 6:12 PM CDT	Tornado Warning	MEG	33 min
Apr 5, 6:18 PM CDT	Mesoscale Discussion	SPC	87 min
Apr 5, 6:22 PM CDT	Tornado Warning	MEG	38 min
Apr 5, 6:49 PM CDT	Severe Thunderstorm Warning Considerable damage threat	MEG	41 min
Apr 5, 6:50 PM CDT	Tornado Warning Tornado observedConsiderable damage threat	MEG	40 min
Apr 5, 6:58 PM CDT	Severe Thunderstorm Warning	MEG	47 min
Apr 5, 7:09 PM CDT	Tornado Warning Tornado observedConsiderable damage threat	MEG	51 min
Apr 5, 7:14 PM CDT	Tornado Warning	MEG	46 min
Apr 5, 7:43 PM CDT	Tornado Warning Tornado observedConsiderable damage threat	MEG	32 min
Apr 5, 7:47 PM CDT	Flash Flood Warning	MEG	11 hr
Apr 5, 8:15 PM CDT	Mesoscale Discussion	SPC	90 min
Apr 5, 8:19 PM CDT	Tornado Warning	MEG	41 min
Apr 5, 8:25 PM CDT	Flash Flood Warning	MEG	9 hr
Apr 5, 8:53 PM CDT	Tornado Warning	MEG	52 min
Apr 6, 5:13 AM CDT	Areal Flood Warning	MEG	13 hr
Apr 6, 6:45 AM CDT	Areal Flood Warning	MEG	11 hr
Apr 6, 8:26 AM CDT	Areal Flood Warning	MEG	10 hr
Apr 6, 8:57 AM CDT	Areal Flood Warning	MEG	9 hr
Apr 8, 1:58 AM CDT	Frost Advisory	MEG	31 hr
Apr 10, 2:56 PM CDT	Mesoscale Discussion	SPC	3 hr
Apr 10, 3:36 PM CDT	Severe Thunderstorm Watch	SPC	7 hr
Apr 10, 5:08 PM CDT	Mesoscale Discussion	SPC	2 hr
Apr 10, 6:41 PM CDT	Severe Thunderstorm Warning	MEG	30 min
Apr 25, 9:48 AM CDT	Areal Flood Advisory	MEG	3 hr
Apr 26, 3:31 AM CDT	Dense Fog Advisory	MEG	5 hr
May 2, 8:28 AM CDT	Mesoscale Discussion	SPC	92 min
May 2, 9:39 AM CDT	Mesoscale Discussion	SPC	2 hr
May 2, 9:58 AM CDT	Severe Thunderstorm Watch	SPC	8 hr
May 2, 11:29 AM CDT	Mesoscale Discussion	SPC	91 min
May 2, 1:04 PM CDT	Special Weather Statement	MEG	41 min
May 7, 11:00 PM CDT	Dense Fog Advisory	MEG	10 hr
May 8, 11:10 AM CDT	Mesoscale Discussion	SPC	95 min
May 8, 12:25 PM CDT	Severe Thunderstorm Watch	SPC	8 hr
May 8, 2:03 PM CDT	Mesoscale Discussion	SPC	87 min
May 8, 3:43 PM CDT	Mesoscale Discussion	SPC	92 min
May 9, 4:39 AM CDT	Dense Fog Advisory	MEG	3 hr
May 16, 6:51 PM CDT	Tornado Watch	SPC	9 hr
May 17, 1:16 AM CDT	Severe Thunderstorm Warning Considerable damage threat	MEG	44 min
May 17, 1:50 AM CDT	Mesoscale Discussion	SPC	55 min
May 17, 1:52 AM CDT	Severe Thunderstorm Warning Considerable damage threat	MEG	53 min
May 18, 11:08 PM CDT	Severe Thunderstorm Warning Considerable damage threat	MEG	52 min
May 18, 11:53 PM CDT	Mesoscale Discussion	SPC	3 hr
May 18, 11:58 PM CDT	Severe Thunderstorm Warning Considerable damage threat	MEG	77 min
May 20, 1:09 PM CDT	Tornado Watch	SPC	8 hr
May 20, 2:20 PM CDT	Severe Thunderstorm Warning	MEG	40 min
May 20, 2:54 PM CDT	Severe Thunderstorm Warning	MEG	18 min
May 20, 3:33 PM CDT	Mesoscale Discussion	SPC	117 min
May 20, 5:52 PM CDT	Severe Thunderstorm Warning	MEG	53 min
May 20, 6:02 PM CDT	Tornado Warning	MEG	20 min
May 24, 5:33 AM CDT	Special Weather Statement	MEG	27 min
May 25, 1:32 PM CDT	Mesoscale Discussion	SPC	118 min
May 25, 2:07 PM CDT	Severe Thunderstorm Watch	SPC	8 hr
May 25, 3:33 PM CDT	Mesoscale Discussion	SPC	87 min
May 25, 4:58 PM CDT	Severe Thunderstorm Warning	MEG	47 min
May 25, 6:33 PM CDT	Severe Thunderstorm Warning	MEG	57 min
May 25, 7:03 PM CDT	Mesoscale Discussion	SPC	87 min
May 25, 7:25 PM CDT	Severe Thunderstorm Warning Considerable damage threat	MEG	47 min
Jun 6, 2:11 PM CDT	Mesoscale Discussion	SPC	64 min
Jun 7, 7:33 AM CDT	Mesoscale Discussion	SPC	87 min
Jun 7, 9:50 AM CDT	Severe Thunderstorm Watch	SPC	4 hr
Jun 7, 11:14 AM CDT	Severe Thunderstorm Warning	MEG	46 min
Jun 7, 11:34 AM CDT	Severe Thunderstorm Warning	MEG	41 min
Jun 7, 7:26 PM CDT	Severe Thunderstorm Watch	SPC	7 hr
Jun 7, 9:22 PM CDT	Tornado Warning	MEG	20 min
Jun 7, 9:37 PM CDT	Mesoscale Discussion	SPC	113 min
Jun 7, 11:29 PM CDT	Mesoscale Discussion	SPC	91 min
Jun 9, 1:58 PM CDT	Mesoscale Discussion	SPC	92 min
Jun 10, 5:45 AM CDT	Dense Fog Advisory	MEG	3 hr
Jun 12, 8:17 PM CDT	Special Weather Statement	MEG	28 min
Jun 13, 12:38 PM CDT	Mesoscale Discussion	SPC	2 hr
Jun 19, 2:55 AM CDT	Mesoscale Discussion	SPC	65 min
Jun 20, 1:32 PM CDT	Heat Advisory	MEG	30 hr
Jun 21, 2:49 AM CDT	Heat Advisory	MEG	7 days
Jun 29, 7:34 PM CDT	Areal Flood Advisory	MEG	116 min
Jul 7, 1:27 PM CDT	Mesoscale Discussion	SPC	2 hr
Jul 8, 6:47 PM CDT	Special Weather Statement	MEG	28 min
Jul 10, 7:34 PM CDT	Areal Flood Advisory	MEG	2 hr
Jul 15, 11:33 AM CDT	Heat Advisory	MEG	57 hr
Jul 20, 11:02 AM CDT	Heat Advisory	MEG	33 hr
Jul 21, 12:10 PM CDT	Heat Advisory	MEG	32 hr
Jul 22, 10:20 AM CDT	Extreme Heat Warning	MEG	34 hr
Jul 23, 11:34 AM CDT	Heat Advisory	MEG	56 hr
Jul 25, 11:53 AM CDT	Heat Advisory	MEG	4 days
Jul 26, 11:02 PM CDT	Extreme Heat Watch	MEG	36 hr
Jul 27, 12:02 PM CDT	Extreme Heat Warning	MEG	4 days
Aug 13, 4:07 PM CDT	Special Weather Statement	MEG	23 min
Aug 13, 6:05 PM CDT	Areal Flood Advisory	MEG	116 min
Aug 15, 9:46 AM CDT	Heat Advisory	MEG	5 days
Sep 15, 8:25 AM CDT	Special Weather Statement	MEG	35 min
Sep 21, 2:45 PM CDT	Special Weather Statement	MEG	30 min
Sep 24, 1:59 AM CDT	Areal Flood Advisory	MEG	74 min
Oct 18, 6:12 PM CDT	Severe Thunderstorm Watch	SPC	6 hr
Oct 18, 9:30 PM CDT	Special Weather Statement	MEG	30 min
Oct 18, 9:56 PM CDT	Special Weather Statement	MEG	34 min
Nov 7, 9:03 PM CST	Dense Fog Advisory	MEG	13 hr
Nov 19, 8:46 PM CST	Dense Fog Advisory	MEG	13 hr
Nov 20, 7:02 PM CST	Dense Fog Advisory	MEG	13 hr
Nov 24, 9:47 PM CST	Wind Advisory	MEG	10 hr
Nov 24, 11:00 PM CST	Areal Flood Advisory	MEG	5 hr
Dec 6, 11:09 PM CST	Dense Fog Advisory	MEG	10 hr
Dec 12, 5:22 PM CST	Cold Weather Advisory	MEG	43 hr
Dec 18, 3:48 PM CST	Mesoscale Discussion	SPC	117 min
Dec 25, 6:19 AM CST	Dense Fog Advisory	MEG	4 hr
Dec 26, 11:36 PM CST	Dense Fog Advisory	MEG	12 hr
Dec 27, 10:19 PM CST	Wind Advisory	MEG	32 hr

By product

Every kind of product issued here, grouped by hazard. Each opens the same place narrowed to that product.

Product	Alerts
Severe storms
Severe Thunderstorm Warning	21
Tornado Warning	10
Severe Thunderstorm Watch	7
Tornado Watch	15
Mesoscale Discussion	40
Special Weather Statement	11
Flooding
Areal Flood Warning	4
Flash Flood Warning	3
River Flood Warning	2
Flood Watch	3
Areal Flood Advisory	8
Winter
Winter Storm Warning	1
Winter Storm Watch	1
Winter Weather Advisory	1
Heat
Extreme Heat Warning	2
Extreme Heat Watch	1
Heat Advisory	8
Cold
Extreme Cold Warning	1
Cold Weather Advisory	6
Frost Advisory	1
Wind and dust
Wind Advisory	6
Fire
Red Flag Warning	1
Fog and smoke
Dense Fog Advisory	10

The busiest days

Days with the most alerts issued, by UTC date.

Nearby

Alerts in force now Tornadoes on record Forecast The radar archive 2024 2026

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.