Alert archive / Mississippi / Union County

Weather alerts in Union County, Mississippi, 2023

203 weather alerts in 2023, 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 2023. Tap one for its archive.

Alerts: 203
Warnings: 63
Watches: 34
Advisories: 48
Busiest month: March37 alerts
Busiest day: January 3, 202310 alerts

Over time

By month

Warning verification

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

3 of 5 tornado warnings covering Union County in 2023 had a tornado report inside them; 3 of 3 tornado reports fell inside a warning, on average 3 minutes after it went out.

Union County, 2023

	Warnings	With a report	False alarm ratio	Reports	Inside a warning	Mean lead time
Tornado warnings	5	3	40%	3	100%	3 min
Severe thunderstorm warnings	38	33	13%	17	100%	17 min
Flash flood warnings	2	1	50%	0

Each office's whole area, 2023

	Warnings	With a report	False alarm ratio	Reports	Inside a warning	Mean lead time
NWS Memphis, TN: tornado warnings	83	27	67%	60	77%	19 min
NWS Memphis, TN: severe thunderstorm warnings	372	254	32%	581	81%	23 min
NWS Memphis, TN: flash flood warnings	54	34	37%	71	86%	88 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
Dec 31, 9:59 PM CST	Dense Fog Advisory	MEG	13 hr
Jan 3, 1:36 AM CST	Mesoscale Discussion	SPC	114 min
Jan 3, 2:56 AM CST	Tornado Watch	SPC	8 hr
Jan 3, 7:56 AM CST	Mesoscale Discussion	SPC	2 hr
Jan 3, 8:22 AM CST	Severe Thunderstorm Warning	MEG	38 min
Jan 3, 8:30 AM CST	Tornado Warning	MEG	30 min
Jan 3, 8:40 AM CST	Severe Thunderstorm Warning	MEG	50 min
Jan 3, 9:00 AM CST	Tornado Warning	MEG	45 min
Jan 3, 9:01 AM CST	Severe Thunderstorm Warning	MEG	44 min
Jan 3, 9:28 AM CST	Severe Thunderstorm Warning	MEG	47 min
Jan 3, 9:37 AM CST	Severe Thunderstorm Warning	MEG	38 min
Jan 8, 1:10 AM CST	Dense Fog Advisory	MEG	6 hr
Jan 17, 10:02 PM CST	Dense Fog Advisory	MEG	10 hr
Jan 18, 3:29 AM CST	Wind Advisory	MEG	20 hr
Jan 18, 2:34 PM CST	Tornado Watch	SPC	7 hr
Jan 18, 8:02 PM CST	Mesoscale Discussion	SPC	58 min
Jan 24, 3:23 AM CST	Wind Advisory	MEG	30 hr
Jan 30, 3:21 AM CST	Winter Weather Advisory	MEG	3 days
Feb 6, 3:54 AM CST	Dense Fog Advisory	MEG	7 hr
Feb 8, 4:26 AM CST	Wind Advisory	MEG	30 hr
Feb 8, 6:56 PM CST	Mesoscale Discussion	SPC	64 min
Feb 13, 1:51 PM CST	Wind Advisory	MEG	30 hr
Feb 15, 9:22 PM CST	Tornado Watch	SPC	8 hr
Feb 16, 11:33 AM CST	Mesoscale Discussion	SPC	27 min
Feb 16, 12:00 PM CST	Tornado Watch	SPC	7 hr
Feb 16, 2:02 PM CST	Mesoscale Discussion	SPC	118 min
Feb 21, 3:21 PM CST	Wind Advisory	MEG	27 hr
Feb 22, 2:23 PM CST	Mesoscale Discussion	SPC	97 min
Feb 26, 3:21 AM CST	Wind Advisory	MEG	37 hr
Feb 28, 8:29 PM CST	Flood Watch	MEG	64 hr
Mar 1, 2:22 PM CST	Mesoscale Discussion	SPC	113 min
Mar 1, 3:31 PM CST	Tornado Watch	SPC	8 hr
Mar 1, 6:21 PM CST	Mesoscale Discussion	SPC	114 min
Mar 1, 9:33 PM CST	Areal Flood Advisory	MEG	3 hr
Mar 1, 9:38 PM CST	Mesoscale Discussion	SPC	37 min
Mar 2, 12:28 AM CST	Areal Flood Advisory	MEG	6 hr
Mar 2, 3:27 AM CST	Wind Advisory	MEG	38 hr
Mar 2, 2:33 PM CST	High Wind Warning	MEG	27 hr
Mar 2, 7:13 PM CST	River Flood Warning	MEG	24 hr
Mar 3, 4:01 AM CST	Mesoscale Discussion	SPC	2 hr
Mar 3, 6:24 AM CST	Tornado Watch	SPC	7 hr
Mar 11, 8:40 PM CST	Mesoscale Discussion	SPC	2 hr
Mar 12, 1:52 PM CDT	Freeze Watch	MEG	14 hr
Mar 12, 1:52 PM CDT	Freeze Watch	MEG	37 hr
Mar 13, 3:56 AM CDT	Freeze Warning	MEG	29 hr
Mar 14, 2:31 AM CDT	Freeze Warning	MEG	30 hr
Mar 16, 2:43 AM CDT	Freeze Watch	MEG	33 hr
Mar 17, 3:31 AM CDT	Freeze Warning	MEG	29 hr
Mar 17, 3:31 AM CDT	Freeze Warning	MEG	55 hr
Mar 18, 8:52 AM CDT	Freeze Warning	MEG	48 hr
Mar 19, 11:01 AM CDT	Freeze Watch	MEG	27 hr
Mar 20, 3:38 AM CDT	Freeze Warning	MEG	28 hr
Mar 24, 6:55 AM CDT	Wind Advisory	MEG	20 hr
Mar 24, 5:20 PM CDT	Tornado Watch	SPC	8 hr
Mar 24, 8:13 PM CDT	Mesoscale Discussion	SPC	62 min
Mar 24, 8:50 PM CDT	Tornado Warning	MEG	40 min
Mar 24, 9:21 PM CDT	Severe Thunderstorm Warning	MEG	39 min
Mar 24, 9:27 PM CDT	Severe Thunderstorm Warning	MEG	48 min
Mar 24, 9:37 PM CDT	Tornado Warning	MEG	23 min
Mar 24, 10:08 PM CDT	Flash Flood Warning	MEG	3 hr
Mar 25, 12:29 PM CDT	River Flood Warning	MEG	22 hr
Mar 30, 3:44 AM CDT	Wind Advisory	MEG	45 hr
Mar 31, 10:47 AM CDT	Mesoscale Discussion	SPC	58 min
Mar 31, 3:42 PM CDT	Mesoscale Discussion	SPC	93 min
Mar 31, 5:28 PM CDT	Mesoscale Discussion	SPC	92 min
Mar 31, 5:58 PM CDT	Tornado Watch PDS	SPC	6 hr
Mar 31, 10:23 PM CDT	Mesoscale Discussion	SPC	2 hr
Mar 31, 11:59 PM CDT	Tornado Watch	SPC	6 hr
Apr 1, 12:39 AM CDT	Severe Thunderstorm Warning	MEG	51 min
Apr 1, 12:46 AM CDT	Tornado Warning	MEG	44 min
Apr 1, 1:13 AM CDT	Mesoscale Discussion	SPC	92 min
Apr 5, 1:38 PM CDT	Severe Thunderstorm Watch	SPC	6 hr
Apr 5, 3:06 PM CDT	Special Weather Statement	MEG	24 min
Apr 5, 3:20 PM CDT	Flood Watch	MEG	27 hr
Apr 5, 3:28 PM CDT	Special Weather Statement	MEG	47 min
Apr 6, 6:16 AM CDT	River Flood Warning	MEG	37 hr
Apr 15, 6:28 PM CDT	Mesoscale Discussion	SPC	92 min
Apr 15, 6:48 PM CDT	Severe Thunderstorm Watch	SPC	7 hr
Apr 15, 8:12 PM CDT	Mesoscale Discussion	SPC	63 min
Apr 15, 9:31 PM CDT	Mesoscale Discussion	SPC	59 min
Apr 15, 11:52 PM CDT	Mesoscale Discussion	SPC	83 min
Apr 21, 5:02 PM CDT	Areal Flood Advisory	MEG	3 hr
Apr 22, 5:33 AM CDT	Dense Fog Advisory	MEG	3 hr
Apr 23, 3:21 AM CDT	Frost Advisory	MEG	29 hr
Apr 27, 3:50 PM CDT	Mesoscale Discussion	SPC	115 min
Apr 27, 5:12 PM CDT	Severe Thunderstorm Watch	SPC	6 hr
Apr 27, 6:57 PM CDT	Mesoscale Discussion	SPC	2 hr
Apr 27, 9:08 PM CDT	Mesoscale Discussion	SPC	2 hr
Apr 28, 6:12 AM CDT	Dense Fog Advisory	MEG	3 hr
May 11, 5:08 PM CDT	Special Weather Statement	MEG	37 min
May 18, 1:00 PM CDT	Mesoscale Discussion	SPC	2 hr
May 27, 4:24 PM CDT	Special Weather Statement	MEG	36 min
May 27, 4:47 PM CDT	Areal Flood Advisory	MEG	118 min
Jun 10, 6:19 PM CDT	Mesoscale Discussion	SPC	86 min
Jun 10, 6:25 PM CDT	Special Weather Statement	MEG	50 min
Jun 10, 7:18 PM CDT	Areal Flood Advisory	MEG	117 min
Jun 11, 2:47 PM CDT	Severe Thunderstorm Watch	SPC	7 hr
Jun 11, 4:43 PM CDT	Mesoscale Discussion	SPC	92 min
Jun 11, 6:51 PM CDT	Severe Thunderstorm Warning	MEG	39 min
Jun 11, 7:22 PM CDT	Severe Thunderstorm Warning	MEG	53 min
Jun 11, 7:54 PM CDT	Severe Thunderstorm Warning	MEG	36 min
Jun 11, 8:09 PM CDT	Severe Thunderstorm Warning	MEG	51 min
Jun 14, 7:22 AM CDT	Mesoscale Discussion	SPC	83 min
Jun 14, 8:10 AM CDT	Severe Thunderstorm Watch	SPC	6 hr
Jun 15, 1:40 PM CDT	Mesoscale Discussion	SPC	3 hr
Jun 16, 3:34 PM CDT	Severe Thunderstorm Warning	MEG	41 min
Jun 16, 4:11 PM CDT	Severe Thunderstorm Warning	MEG	49 min
Jun 16, 4:23 PM CDT	Areal Flood Advisory	MEG	3 hr
Jun 16, 4:49 PM CDT	Severe Thunderstorm Warning	MEG	41 min
Jun 16, 4:52 PM CDT	Severe Thunderstorm Watch	SPC	9 hr
Jun 16, 5:23 PM CDT	Flash Flood Warning	MEG	3 hr
Jun 18, 2:27 AM CDT	Severe Thunderstorm Watch	SPC	10 hr
Jun 18, 5:51 AM CDT	Severe Thunderstorm Warning	MEG	24 min
Jun 18, 6:01 AM CDT	Special Weather Statement	MEG	29 min
Jun 18, 6:08 AM CDT	Severe Thunderstorm Warning	MEG	52 min
Jun 18, 6:20 AM CDT	Severe Thunderstorm Warning	MEG	40 min
Jun 18, 6:53 AM CDT	Severe Thunderstorm Warning	MEG	29 min
Jun 18, 5:31 PM CDT	Mesoscale Discussion	SPC	119 min
Jun 18, 6:52 PM CDT	Tornado Watch	SPC	6 hr
Jun 24, 4:07 AM CDT	Heat Advisory	MEG	40 hr
Jun 25, 6:51 PM CDT	Severe Thunderstorm Watch	SPC	7 hr
Jun 25, 7:20 PM CDT	Severe Thunderstorm Warning Considerable damage threat	MEG	40 min
Jun 25, 7:53 PM CDT	Severe Thunderstorm Warning Considerable damage threat	MEG	67 min
Jun 25, 8:49 PM CDT	Mesoscale Discussion	SPC	86 min
Jun 25, 8:56 PM CDT	Severe Thunderstorm Warning	MEG	34 min
Jun 27, 3:36 AM CDT	Excessive Heat Watch	MEG	24 hr
Jun 28, 3:54 AM CDT	Excessive Heat Warning	MEG	4 days
Jun 29, 2:57 PM CDT	Excessive Heat Watch	MEG	13 hr
Jul 1, 3:53 AM CDT	Heat Advisory	MEG	39 hr
Jul 2, 10:16 AM CDT	Mesoscale Discussion	SPC	89 min
Jul 2, 12:14 PM CDT	Severe Thunderstorm Watch	SPC	8 hr
Jul 3, 12:48 PM CDT	Mesoscale Discussion	SPC	117 min
Jul 8, 1:38 PM CDT	Mesoscale Discussion	SPC	2 hr
Jul 9, 12:51 PM CDT	Mesoscale Discussion	SPC	84 min
Jul 14, 12:14 PM CDT	Mesoscale Discussion	SPC	3 hr
Jul 14, 12:18 PM CDT	Special Weather Statement	MEG	27 min
Jul 14, 12:29 PM CDT	Special Weather Statement	MEG	31 min
Jul 14, 12:34 PM CDT	Severe Thunderstorm Warning	MEG	41 min
Jul 14, 12:58 PM CDT	Severe Thunderstorm Warning	MEG	47 min
Jul 14, 1:31 PM CDT	Areal Flood Advisory	MEG	119 min
Jul 14, 1:40 PM CDT	Areal Flood Advisory	MEG	2 hr
Jul 17, 4:48 PM CDT	Severe Thunderstorm Watch	SPC	7 hr
Jul 18, 3:01 PM CDT	Heat Advisory	MEG	29 hr
Jul 18, 4:29 PM CDT	Mesoscale Discussion	SPC	3 hr
Jul 18, 4:39 PM CDT	Severe Thunderstorm Watch	SPC	4 hr
Jul 18, 6:32 PM CDT	Severe Thunderstorm Warning	MEG	43 min
Jul 18, 7:06 PM CDT	Severe Thunderstorm Warning	MEG	39 min
Jul 18, 7:37 PM CDT	Severe Thunderstorm Warning	MEG	38 min
Jul 19, 2:26 PM CDT	Heat Advisory	MEG	30 hr
Jul 21, 12:25 PM CDT	Severe Thunderstorm Watch	SPC	5 hr
Jul 21, 2:57 PM CDT	Severe Thunderstorm Warning	MEG	63 min
Jul 27, 2:08 PM CDT	Heat Advisory	MEG	29 hr
Jul 28, 3:07 PM CDT	Heat Advisory	MEG	29 hr
Jul 29, 2:08 PM CDT	Heat Advisory	MEG	29 hr
Aug 2, 3:34 AM CDT	Heat Advisory	MEG	41 hr
Aug 3, 3:09 PM CDT	Heat Advisory	MEG	29 hr
Aug 5, 3:29 AM CDT	Heat Advisory	MEG	17 hr
Aug 5, 1:31 PM CDT	Excessive Heat Warning	MEG	6 hr
Aug 5, 3:02 PM CDT	Heat Advisory	MEG	27 hr
Aug 5, 3:31 PM CDT	Severe Thunderstorm Watch	SPC	4 hr
Aug 6, 11:49 AM CDT	Mesoscale Discussion	SPC	116 min
Aug 7, 9:33 AM CDT	Mesoscale Discussion	SPC	117 min
Aug 7, 12:06 PM CDT	Special Weather Statement	MEG	24 min
Aug 7, 12:28 PM CDT	Severe Thunderstorm Warning	MEG	32 min
Aug 7, 12:59 PM CDT	Severe Thunderstorm Warning	MEG	46 min
Aug 9, 11:22 AM CDT	Mesoscale Discussion	SPC	113 min
Aug 9, 9:13 PM CDT	Mesoscale Discussion	SPC	2 hr
Aug 9, 9:31 PM CDT	Tornado Watch	SPC	5 hr
Aug 10, 12:43 AM CDT	Special Weather Statement	MEG	47 min
Aug 10, 2:32 PM CDT	Heat Advisory	MEG	29 hr
Aug 10, 9:21 PM CDT	Dense Fog Advisory	MEG	11 hr
Aug 11, 1:54 PM CDT	Heat Advisory	MEG	30 hr
Aug 11, 2:17 PM CDT	Excessive Heat Warning	MEG	6 hr
Aug 12, 2:16 PM CDT	Excessive Heat Warning	MEG	30 hr
Aug 12, 2:16 PM CDT	Heat Advisory	MEG	30 hr
Aug 13, 3:17 PM CDT	Excessive Heat Warning	MEG	28 hr
Aug 13, 3:17 PM CDT	Heat Advisory	MEG	28 hr
Aug 14, 5:43 PM CDT	Mesoscale Discussion	SPC	2 hr
Aug 20, 3:01 PM CDT	Heat Advisory	MEG	36 hr
Aug 22, 3:08 AM CDT	Excessive Heat Warning	MEG	5 days
Aug 22, 3:08 AM CDT	Heat Advisory	MEG	47 hr
Sep 6, 2:05 PM CDT	Mesoscale Discussion	SPC	2 hr
Sep 6, 4:02 PM CDT	Severe Thunderstorm Warning	MEG	43 min
Sep 6, 4:29 PM CDT	Severe Thunderstorm Warning Considerable damage threat	MEG	46 min
Sep 6, 5:25 PM CDT	Severe Thunderstorm Watch	SPC	6 hr
Sep 6, 5:26 PM CDT	Severe Thunderstorm Warning	MEG	49 min
Sep 6, 6:42 PM CDT	Severe Thunderstorm Warning	MEG	48 min
Sep 6, 7:38 PM CDT	Mesoscale Discussion	SPC	97 min
Oct 29, 3:05 PM CDT	Frost Advisory	MEG	42 hr
Oct 30, 2:07 AM CDT	Freeze Warning	MEG	31 hr
Oct 30, 2:07 AM CDT	Freeze Warning	MEG	55 hr
Nov 17, 8:12 PM CST	Dense Fog Advisory	MEG	6 hr
Nov 29, 2:32 PM CST	Wind Advisory	MEG	31 hr
Dec 1, 6:52 PM CST	Dense Fog Advisory	MEG	13 hr
Dec 2, 7:29 PM CST	Dense Fog Advisory	MEG	15 hr
Dec 9, 10:50 AM CST	Mesoscale Discussion	SPC	115 min
Dec 9, 11:35 AM CST	Tornado Watch	SPC	9 hr
Dec 9, 1:59 PM CST	Mesoscale Discussion	SPC	91 min
Dec 9, 4:08 PM CST	Severe Thunderstorm Warning Considerable damage threat	MEG	52 min
Dec 9, 4:37 PM CST	Severe Thunderstorm Warning	MEG	38 min
Dec 9, 4:51 PM CST	Special Weather Statement	MEG	24 min
Dec 9, 5:07 PM CST	Severe Thunderstorm Warning	MEG	53 min
Dec 9, 5:08 PM CST	Severe Thunderstorm Warning	MEG	52 min

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	38
Tornado Warning	5
Severe Thunderstorm Watch	14
Tornado Watch	12
Mesoscale Discussion	47
Special Weather Statement	11
Flooding
Flash Flood Warning	2
River Flood Warning	3
Flood Watch	2
Areal Flood Advisory	8
Winter
Winter Weather Advisory	1
Heat
Excessive Heat Warning	6
Excessive Heat Watch	2
Heat Advisory	17
Cold
Freeze Warning	8
Freeze Watch	4
Frost Advisory	2
Wind and dust
High Wind Warning	1
Wind Advisory	10
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 2022 2024

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.