Alert archive / Tennessee / Decatur County

Weather alerts in Decatur County, Tennessee, 2023

175 weather alerts in 2023, from the National Weather Service and the Storm Prediction Center. An alert counts here when it covered this county.

Decatur County and its neighbors

Each county as a circle sized by its count in 2023. Tap one for its archive.

Alerts: 175
Warnings: 34
Watches: 35
Advisories: 51
Busiest month: March32 alerts
Busiest day: April 1, 20239 alerts

Over time

By month

Warning verification

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

1 of 4 tornado warnings covering Decatur County in 2023 had a tornado report inside them.

Decatur County, 2023

	Warnings	With a report	False alarm ratio	Reports	Inside a warning	Mean lead time
Tornado warnings	4	1	75%	0
Severe thunderstorm warnings	15	9	40%	0
Flash flood warnings	1	1	0%	2	100%	59 min

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 8, 1:10 AM CST	Dense Fog Advisory	MEG	6 hr
Jan 9, 3:50 AM CST	Freezing Fog Advisory	MEG	5 hr
Jan 18, 3:29 AM CST	Wind Advisory	MEG	20 hr
Jan 19, 10:33 AM CST	Wind Advisory	MEG	3 hr
Jan 24, 3:23 AM CST	Wind Advisory	MEG	30 hr
Jan 29, 12:07 PM CST	River Flood Advisory	MEG	8 days
Jan 30, 3:21 AM CST	Ice Storm Warning	MEG	3 days
Feb 2, 5:03 AM CST	Mesoscale Discussion	SPC	5 hr
Feb 8, 4:26 AM CST	Wind Advisory	MEG	30 hr
Feb 13, 1:51 PM CST	Wind Advisory	MEG	30 hr
Feb 15, 9:22 PM CST	Tornado Watch	SPC	8 hr
Feb 16, 12:41 AM CST	Areal Flood Advisory	MEG	3 hr
Feb 16, 9:23 AM CST	Mesoscale Discussion	SPC	2 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, 12:13 PM CST	River Flood Advisory	MEG	14 days
Feb 16, 12:58 PM CST	Tornado Warning	MEG	32 min
Feb 16, 2:02 PM CST	Mesoscale Discussion	SPC	118 min
Feb 21, 3:21 PM CST	Wind Advisory	MEG	27 hr
Feb 26, 3:21 AM CST	Wind Advisory	MEG	37 hr
Feb 28, 8:29 PM CST	Flood Watch	MEG	64 hr
Mar 1, 3:31 PM CST	Tornado Watch	SPC	8 hr
Mar 1, 6:21 PM CST	Mesoscale Discussion	SPC	114 min
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, 9:42 PM CST	River Flood Warning	MEG	8 days
Mar 3, 4:01 AM CST	Mesoscale Discussion	SPC	2 hr
Mar 3, 6:24 AM CST	Tornado Watch	SPC	7 hr
Mar 5, 4:48 AM CST	River Flood Advisory	OHX	7 days
Mar 5, 2:05 PM CST	River Flood Advisory	MEG	3 days
Mar 11, 9:11 AM CST	River Flood Advisory	MEG	3 days
Mar 12, 1:52 PM CDT	Freeze Watch	MEG	14 hr
Mar 12, 1:52 PM CDT	Freeze Watch	MEG	37 hr
Mar 12, 1:52 PM CDT	Freeze Warning	MEG	19 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, 8:34 PM CDT	Mesoscale Discussion	SPC	116 min
Mar 24, 8:57 PM CDT	Severe Thunderstorm Warning Considerable damage threat	MEG	48 min
Mar 25, 8:22 PM CDT	River Flood Advisory	MEG	39 hr
Mar 28, 3:03 PM CDT	Frost Advisory	MEG	18 hr
Mar 30, 3:44 AM CDT	Wind Advisory	MEG	45 hr
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, 9:44 PM CDT	Tornado Warning	MEG	30 min
Mar 31, 9:52 PM CDT	Mesoscale Discussion	SPC	113 min
Mar 31, 11:20 PM CDT	Mesoscale Discussion	SPC	115 min
Mar 31, 11:21 PM CDT	Tornado Warning Tornado observedConsiderable damage threat	MEG	39 min
Mar 31, 11:41 PM CDT	Severe Thunderstorm Warning	MEG	19 min
Mar 31, 11:56 PM CDT	Severe Thunderstorm Warning Considerable damage threat	MEG	49 min
Mar 31, 11:59 PM CDT	Tornado Watch	SPC	6 hr
Apr 1, 3:24 AM CDT	Wind Advisory	MEG	11 hr
Apr 1, 2:13 PM CDT	Wind Advisory	MEG	4 hr
Apr 5, 12:51 PM CDT	Mesoscale Discussion	SPC	84 min
Apr 5, 1:38 PM CDT	Severe Thunderstorm Watch	SPC	6 hr
Apr 5, 2:03 PM CDT	Severe Thunderstorm Warning	MEG	27 min
Apr 5, 3:20 PM CDT	Flood Watch	MEG	27 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, 10:34 PM CDT	Special Weather Statement	MEG	41 min
Apr 15, 11:52 PM CDT	Mesoscale Discussion	SPC	83 min
Apr 22, 5:33 AM CDT	Dense Fog Advisory	MEG	3 hr
Apr 23, 3:21 AM CDT	Frost Advisory	MEG	29 hr
Apr 28, 6:12 AM CDT	Dense Fog Advisory	MEG	3 hr
May 9, 1:11 AM CDT	Mesoscale Discussion	SPC	3 hr
May 10, 4:56 PM CDT	Special Weather Statement	MEG	34 min
May 10, 6:20 PM CDT	Areal Flood Advisory	MEG	75 min
May 11, 7:23 PM CDT	Special Weather Statement	MEG	37 min
May 12, 10:07 AM CDT	Special Weather Statement	MEG	23 min
May 15, 1:27 PM CDT	Mesoscale Discussion	SPC	2 hr
Jun 4, 1:03 PM CDT	Mesoscale Discussion	SPC	117 min
Jun 11, 1:56 PM CDT	Mesoscale Discussion	SPC	3 hr
Jun 11, 2:47 PM CDT	Severe Thunderstorm Watch	SPC	7 hr
Jun 11, 4:43 PM CDT	Mesoscale Discussion	SPC	92 min
Jun 15, 1:40 PM CDT	Mesoscale Discussion	SPC	3 hr
Jun 18, 2:27 AM CDT	Severe Thunderstorm Watch	SPC	10 hr
Jun 18, 6:52 PM CDT	Tornado Watch	SPC	6 hr
Jun 24, 4:07 AM CDT	Heat Advisory	MEG	40 hr
Jun 25, 4:45 PM CDT	Mesoscale Discussion	SPC	90 min
Jun 25, 6:51 PM CDT	Severe Thunderstorm Watch	SPC	7 hr
Jun 25, 8:04 PM CDT	Severe Thunderstorm Warning	MEG	26 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, 2:25 PM CDT	Mesoscale Discussion	SPC	2 hr
Jun 29, 2:57 PM CDT	Excessive Heat Watch	MEG	13 hr
Jul 1, 11:28 AM CDT	Mesoscale Discussion	SPC	92 min
Jul 1, 11:37 AM CDT	Severe Thunderstorm Warning	MEG	23 min
Jul 1, 11:46 AM CDT	Mesoscale Discussion	SPC	89 min
Jul 1, 11:56 AM CDT	Severe Thunderstorm Warning	MEG	34 min
Jul 1, 12:04 PM CDT	Severe Thunderstorm Watch	SPC	9 hr
Jul 2, 12:33 PM CDT	Severe Thunderstorm Watch	SPC	8 hr
Jul 2, 2:42 PM CDT	Mesoscale Discussion	SPC	2 hr
Jul 2, 4:37 PM CDT	Special Weather Statement	MEG	23 min
Jul 4, 8:29 PM CDT	Areal Flood Advisory	MEG	2 hr
Jul 4, 8:35 PM CDT	Special Weather Statement	MEG	25 min
Jul 4, 9:01 PM CDT	Flash Flood Warning	MEG	3 hr
Jul 8, 4:25 PM CDT	Special Weather Statement	MEG	35 min
Jul 8, 4:29 PM CDT	Mesoscale Discussion	SPC	2 hr
Jul 9, 12:51 PM CDT	Mesoscale Discussion	SPC	84 min
Jul 9, 11:21 PM CDT	Dense Fog Advisory	MEG	10 hr
Jul 14, 12:14 PM CDT	Mesoscale Discussion	SPC	3 hr
Jul 17, 4:48 PM CDT	Severe Thunderstorm Watch	SPC	7 hr
Jul 18, 8:59 AM CDT	Severe Thunderstorm Watch	SPC	8 hr
Jul 18, 2:52 PM CDT	Severe Thunderstorm Warning	MEG	38 min
Jul 18, 3:00 PM CDT	Mesoscale Discussion	SPC	90 min
Jul 18, 3:01 PM CDT	Heat Advisory	MEG	29 hr
Jul 18, 3:27 PM CDT	Severe Thunderstorm Warning	MEG	48 min
Jul 18, 4:19 PM CDT	Severe Thunderstorm Warning	MEG	24 min
Jul 18, 6:31 PM CDT	Areal Flood Advisory	MEG	3 hr
Jul 19, 3:55 AM CDT	Severe Thunderstorm Watch	SPC	6 hr
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, 2:06 PM CDT	Mesoscale Discussion	SPC	114 min
Jul 21, 2:54 PM CDT	Severe Thunderstorm Warning	MEG	51 min
Jul 21, 3:20 PM CDT	Areal Flood Advisory	MEG	2 hr
Jul 27, 2:08 PM CDT	Heat Advisory	MEG	29 hr
Jul 28, 3:07 PM CDT	Heat Advisory	MEG	29 hr
Aug 3, 7:16 AM CDT	Mesoscale Discussion	SPC	2 hr
Aug 3, 7:30 PM CDT	Flood Watch	MEG	18 hr
Aug 4, 1:43 AM CDT	Areal Flood Advisory	MEG	3 hr
Aug 5, 3:31 PM CDT	Severe Thunderstorm Watch	SPC	4 hr
Aug 5, 5:47 PM CDT	Mesoscale Discussion	SPC	118 min
Aug 5, 6:14 PM CDT	Severe Thunderstorm Warning	MEG	46 min
Aug 7, 9:29 AM CDT	Severe Thunderstorm Warning	MEG	46 min
Aug 7, 9:33 AM CDT	Mesoscale Discussion	SPC	117 min
Aug 9, 10:58 AM CDT	Flood Watch	MEG	20 hr
Aug 9, 11:22 AM CDT	Mesoscale Discussion	SPC	113 min
Aug 9, 1:59 PM CDT	Severe Thunderstorm Warning	MEG	46 min
Aug 9, 9:13 PM CDT	Mesoscale Discussion	SPC	2 hr
Aug 9, 9:31 PM CDT	Tornado Watch	SPC	5 hr
Aug 9, 11:30 PM CDT	Mesoscale Discussion	SPC	2 hr
Aug 10, 12:12 AM CDT	Special Weather Statement	MEG	33 min
Aug 10, 12:26 AM CDT	Severe Thunderstorm Warning	MEG	34 min
Aug 10, 1:06 AM CDT	Areal Flood Advisory	MEG	114 min
Aug 10, 9:21 PM CDT	Dense Fog Advisory	MEG	11 hr
Aug 12, 9:39 AM CDT	Mesoscale Discussion	SPC	2 hr
Aug 12, 10:07 AM CDT	Special Weather Statement	MEG	23 min
Aug 12, 10:32 AM CDT	Special Weather Statement	MEG	28 min
Aug 12, 11:57 AM CDT	Areal Flood Advisory	MEG	2 hr
Aug 13, 11:53 AM CDT	Mesoscale Discussion	SPC	2 hr
Aug 13, 1:11 PM CDT	Special Weather Statement	MEG	34 min
Aug 13, 1:35 PM CDT	Severe Thunderstorm Watch	SPC	5 hr
Aug 13, 1:43 PM CDT	Special Weather Statement	MEG	47 min
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 19, 1:01 AM CDT	Dense Fog Advisory	MEG	6 hr
Oct 5, 11:25 PM CDT	Dense Fog Advisory	MEG	10 hr
Oct 29, 1:25 AM CDT	Dense Fog Advisory	MEG	8 hr
Oct 29, 3:05 PM CDT	Freeze Watch	MEG	11 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 20, 4:16 AM CST	Wind Advisory	MEG	15 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 5, 6:17 AM CST	Dense Fog Advisory	MEG	103 min
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, 2:18 PM CST	Tornado Warning	MEG	42 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	15
Tornado Warning	4
Severe Thunderstorm Watch	13
Tornado Watch	11
Mesoscale Discussion	43
Special Weather Statement	12
Flooding
Flash Flood Warning	1
River Flood Warning	1
Flood Watch	4
Areal Flood Advisory	8
River Flood Advisory	6
Winter
Ice Storm Warning	1
Heat
Excessive Heat Warning	2
Excessive Heat Watch	2
Heat Advisory	7
Cold
Freeze Warning	9
Freeze Watch	5
Frost Advisory	2
Wind and dust
High Wind Warning	1
Wind Advisory	14
Fog and smoke
Dense Fog Advisory	13
Freezing Fog Advisory	1

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.