Alert archive / Tennessee / Shelby County

Weather alerts in Shelby County, Tennessee, 2019

198 weather alerts in 2019, from the National Weather Service and the Storm Prediction Center. An alert counts here when it covered this county.

Shelby County and its neighbors

Each county as a circle sized by its count in 2019. Tap one for its archive.

Alerts: 198
Warnings: 49
Watches: 19
Advisories: 73
Busiest month: June36 alerts
Busiest day: June 22, 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.

0 of 2 tornado warnings covering Shelby County in 2019 had a tornado report inside them; 0 of 1 tornado reports fell inside a warning.

Shelby County, 2019

	Warnings	With a report	False alarm ratio	Reports	Inside a warning	Mean lead time
Tornado warnings	2	0	100%	1	0%
Severe thunderstorm warnings	21	16	24%	44	86%	27 min
Flash flood warnings	6	2	67%	6	50%	75 min

Each office's whole area, 2019

	Warnings	With a report	False alarm ratio	Reports	Inside a warning	Mean lead time
NWS Memphis, TN: tornado warnings	43	9	79%	33	42%	14 min
NWS Memphis, TN: severe thunderstorm warnings	161	76	53%	247	71%	23 min
NWS Memphis, TN: flash flood warnings	47	16	66%	50	58%	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.

Issued	Product	Office	Lasted
Jan 5, 2:33 PM CST	Dense Fog Advisory	MEG	16 hr
Jan 18, 1:51 PM CST	Wind Advisory	MEG	37 hr
Jan 19, 5:22 AM CST	Special Weather Statement	MEG	38 min
Jan 20, 3:20 AM CST	Wind Advisory	MEG	6 hr
Jan 22, 3:06 PM CST	Wind Advisory	MEG	15 hr
Feb 5, 5:08 AM CST	Dense Fog Advisory	MEG	25 hr
Feb 6, 3:11 AM CST	Wind Advisory	MEG	36 hr
Feb 6, 3:02 PM CST	Mesoscale Discussion	SPC	118 min
Feb 6, 4:34 PM CST	Areal Flood Advisory	MEG	116 min
Feb 7, 7:11 AM CST	Mesoscale Discussion	SPC	64 min
Feb 8, 7:34 PM CST	River Flood Advisory	MEG	15 hr
Feb 9, 6:00 AM CST	River Flood Advisory	MEG	5 days
Feb 9, 10:33 AM CST	River Flood Warning	MEG	68 hr
Feb 12, 11:55 AM CST	River Flood Warning	MEG	45 days
Feb 14, 3:38 AM CST	Wind Advisory	MEG	12 hr
Feb 18, 9:40 AM CST	River Flood Warning	MEG	63 hr
Feb 18, 2:48 PM CST	Flash Flood Watch	MEG	37 hr
Feb 20, 4:06 AM CST	Flash Flood Watch	MEG	9 hr
Feb 20, 3:34 PM CST	Flash Flood Watch	MEG	3 days
Feb 20, 10:11 PM CST	Dense Fog Advisory	MEG	11 hr
Feb 21, 11:24 AM CST	River Flood Warning	MEG	4 days
Feb 22, 2:26 PM CST	Wind Advisory	MEG	30 hr
Feb 23, 8:32 AM CST	River Flood Warning	MEG	47 hr
Feb 23, 12:26 PM CST	Tornado Watch	SPC	8 hr
Feb 23, 1:15 PM CST	Special Weather Statement	MEG	45 min
Feb 23, 2:16 PM CST	Flash Flood Warning	MEG	3 hr
Feb 23, 2:28 PM CST	River Flood Warning	MEG	59 hr
Mar 9, 4:20 AM CST	Wind Advisory	MEG	14 hr
Mar 9, 9:45 AM CST	Mesoscale Discussion	SPC	3 hr
Mar 9, 10:32 AM CST	Tornado Watch	SPC	8 hr
Mar 9, 1:01 PM CST	Special Weather Statement	MEG	44 min
Mar 9, 1:27 PM CST	Mesoscale Discussion	SPC	2 hr
Mar 12, 3:10 PM CDT	Wind Advisory	MEG	52 hr
Mar 13, 5:51 PM CDT	Mesoscale Discussion	SPC	114 min
Mar 13, 8:24 PM CDT	Special Weather Statement	MEG	66 min
Mar 14, 3:19 AM CDT	River Flood Warning	MEG	10 hr
Mar 14, 4:47 AM CDT	Mesoscale Discussion	SPC	88 min
Mar 14, 5:28 AM CDT	Tornado Watch	SPC	7 hr
Mar 14, 7:14 AM CDT	Mesoscale Discussion	SPC	2 hr
Mar 24, 11:51 PM CDT	Special Weather Statement	MEG	54 min
Mar 25, 12:24 AM CDT	Severe Thunderstorm Warning	MEG	35 min
Mar 30, 3:21 AM CDT	Freeze Watch	MEG	24 hr
Mar 30, 3:52 PM CDT	Mesoscale Discussion	SPC	83 min
Mar 31, 3:01 AM CDT	Freeze Warning	MEG	30 hr
Apr 2, 11:30 AM CDT	River Flood Advisory	MEG	31 days
Apr 5, 4:54 AM CDT	Dense Fog Advisory	MEG	4 hr
Apr 6, 8:57 PM CDT	Severe Thunderstorm Warning	MEG	48 min
Apr 7, 5:29 AM CDT	Mesoscale Discussion	SPC	2 hr
Apr 7, 7:31 AM CDT	Special Weather Statement	MEG	44 min
Apr 7, 7:59 AM CDT	Areal Flood Advisory	MEG	3 hr
Apr 7, 8:15 AM CDT	Special Weather Statement	MEG	30 min
Apr 11, 3:48 AM CDT	Wind Advisory	MEG	15 hr
Apr 13, 6:35 AM CDT	Wind Advisory	MEG	18 hr
Apr 13, 7:48 PM CDT	Areal Flood Warning	MEG	4 hr
Apr 17, 3:39 PM CDT	Flash Flood Watch	MEG	28 hr
May 1, 12:23 PM CDT	Special Weather Statement	MEG	52 min
May 3, 12:50 PM CDT	River Flood Warning	MEG	16 days
May 8, 8:54 PM CDT	Special Weather Statement	MEG	51 min
May 8, 9:37 PM CDT	Special Weather Statement	MEG	38 min
May 9, 7:45 AM CDT	Areal Flood Advisory	MEG	3 hr
May 13, 4:50 AM CDT	Dense Fog Advisory	MEG	4 hr
May 15, 2:33 PM CDT	Mesoscale Discussion	SPC	117 min
May 15, 6:21 PM CDT	Severe Thunderstorm Warning	MEG	39 min
May 15, 6:51 PM CDT	Severe Thunderstorm Warning	MEG	39 min
May 15, 6:56 PM CDT	Severe Thunderstorm Warning	MEG	49 min
May 15, 7:24 PM CDT	Areal Flood Advisory	MEG	3 hr
May 15, 7:43 PM CDT	Severe Thunderstorm Warning	MEG	47 min
May 18, 6:19 PM CDT	Mesoscale Discussion	SPC	116 min
May 18, 6:42 PM CDT	Severe Thunderstorm Watch	SPC	4 hr
May 18, 6:58 PM CDT	Special Weather Statement	MEG	32 min
May 18, 7:59 PM CDT	Severe Thunderstorm Warning	MEG	46 min
May 18, 8:35 PM CDT	Special Weather Statement	MEG	25 min
May 18, 9:00 PM CDT	Mesoscale Discussion	SPC	60 min
May 28, 10:56 AM CDT	River Flood Advisory	MEG	13 days
Jun 4, 4:45 PM CDT	Special Weather Statement	MEG	30 min
Jun 7, 2:15 AM CDT	Areal Flood Advisory	MEG	4 hr
Jun 7, 3:19 AM CDT	Flash Flood Warning	MEG	3 hr
Jun 7, 3:58 AM CDT	Areal Flood Warning	MEG	3 hr
Jun 7, 5:04 AM CDT	River Flood Warning	MEG	6 hr
Jun 7, 12:05 PM CDT	Flash Flood Watch	MEG	15 hr
Jun 10, 1:02 PM CDT	River Flood Warning	MEG	25 hr
Jun 11, 1:45 PM CDT	River Flood Advisory	MEG	11 days
Jun 19, 8:03 PM CDT	Mesoscale Discussion	SPC	57 min
Jun 19, 9:58 PM CDT	Mesoscale Discussion	SPC	62 min
Jun 19, 10:24 PM CDT	Severe Thunderstorm Watch	SPC	7 hr
Jun 19, 11:15 PM CDT	Severe Thunderstorm Warning	MEG	45 min
Jun 19, 11:58 PM CDT	Severe Thunderstorm Warning	MEG	47 min
Jun 21, 4:20 AM CDT	Heat Advisory	MEG	15 hr
Jun 21, 5:14 PM CDT	Mesoscale Discussion	SPC	91 min
Jun 21, 5:47 PM CDT	Severe Thunderstorm Watch	SPC	6 hr
Jun 21, 7:05 PM CDT	Special Weather Statement	MEG	40 min
Jun 21, 7:22 PM CDT	Severe Thunderstorm Warning	MEG	17 min
Jun 21, 7:58 PM CDT	Mesoscale Discussion	SPC	92 min
Jun 21, 8:07 PM CDT	Special Weather Statement	MEG	23 min
Jun 22, 11:48 AM CDT	River Flood Warning	MEG	16 days
Jun 22, 1:55 PM CDT	Mesoscale Discussion	SPC	95 min
Jun 22, 5:06 PM CDT	Special Weather Statement	MEG	39 min
Jun 22, 5:49 PM CDT	Mesoscale Discussion	SPC	56 min
Jun 22, 6:37 PM CDT	Special Weather Statement	MEG	23 min
Jun 22, 6:45 PM CDT	Severe Thunderstorm Warning	MEG	18 min
Jun 23, 1:02 PM CDT	Severe Thunderstorm Watch	SPC	7 hr
Jun 23, 3:41 PM CDT	Mesoscale Discussion	SPC	64 min
Jun 23, 4:14 PM CDT	Special Weather Statement	MEG	31 min
Jun 23, 4:42 PM CDT	Special Weather Statement	MEG	48 min
Jun 23, 5:05 PM CDT	Severe Thunderstorm Warning	MEG	40 min
Jun 27, 4:02 AM CDT	Mesoscale Discussion	SPC	2 hr
Jun 27, 9:32 AM CDT	Special Weather Statement	MEG	43 min
Jun 27, 9:48 AM CDT	Areal Flood Advisory	MEG	117 min
Jun 27, 10:02 AM CDT	Mesoscale Discussion	SPC	118 min
Jun 29, 5:14 PM CDT	Special Weather Statement	MEG	31 min
Jul 2, 8:02 PM CDT	Special Weather Statement	MEG	28 min
Jul 3, 2:15 PM CDT	Special Weather Statement	MEG	30 min
Jul 8, 2:43 PM CDT	Heat Advisory	MEG	29 hr
Jul 8, 3:38 PM CDT	Areal Flood Advisory	MEG	2 hr
Jul 9, 5:05 PM CDT	Heat Advisory	MEG	26 hr
Jul 10, 11:51 AM CDT	Areal Flood Advisory	MEG	52 min
Jul 10, 3:24 PM CDT	Heat Advisory	MEG	29 hr
Jul 13, 3:39 AM CDT	Flash Flood Watch	MEG	4 days
Jul 14, 11:52 AM CDT	Areal Flood Advisory	MEG	3 hr
Jul 15, 9:04 PM CDT	Areal Flood Advisory	MEG	3 hr
Jul 15, 9:35 PM CDT	Severe Thunderstorm Warning	MEG	40 min
Jul 16, 9:39 AM CDT	Areal Flood Advisory	MEG	3 hr
Jul 16, 10:02 AM CDT	Areal Flood Advisory	MEG	3 hr
Jul 16, 11:44 AM CDT	Flash Flood Warning	MEG	3 hr
Jul 16, 12:21 PM CDT	Flash Flood Warning	MEG	3 hr
Jul 16, 3:49 PM CDT	Heat Advisory	MEG	28 hr
Jul 17, 2:13 PM CDT	Excessive Heat Warning	MEG	6 hr
Jul 17, 3:09 PM CDT	Heat Advisory	MEG	53 hr
Jul 18, 11:10 AM CDT	Excessive Heat Warning	MEG	9 hr
Jul 18, 11:10 AM CDT	Heat Advisory	MEG	33 hr
Jul 20, 3:50 AM CDT	Heat Advisory	MEG	16 hr
Jul 21, 3:10 AM CDT	Heat Advisory	MEG	16 hr
Jul 22, 2:08 PM CDT	Mesoscale Discussion	SPC	2 hr
Jul 29, 6:06 PM CDT	Special Weather Statement	MEG	39 min
Jul 31, 3:30 AM CDT	Dense Fog Advisory	MEG	5 hr
Aug 3, 3:31 PM CDT	Special Weather Statement	MEG	44 min
Aug 4, 1:40 PM CDT	Areal Flood Advisory	MEG	2 hr
Aug 4, 1:43 PM CDT	Special Weather Statement	MEG	47 min
Aug 4, 2:18 PM CDT	Flash Flood Warning	MEG	87 min
Aug 4, 2:40 PM CDT	Areal Flood Advisory	MEG	2 hr
Aug 5, 2:47 AM CDT	Dense Fog Advisory	MEG	6 hr
Aug 7, 4:06 AM CDT	Heat Advisory	MEG	32 hr
Aug 7, 11:35 AM CDT	Mesoscale Discussion	SPC	115 min
Aug 7, 12:25 PM CDT	Severe Thunderstorm Watch	SPC	7 hr
Aug 7, 3:36 PM CDT	Special Weather Statement	MEG	24 min
Aug 7, 4:55 PM CDT	Severe Thunderstorm Warning	MEG	50 min
Aug 7, 5:14 PM CDT	Special Weather Statement	MEG	46 min
Aug 7, 5:34 PM CDT	Mesoscale Discussion	SPC	86 min
Aug 8, 2:06 AM CDT	Dense Fog Advisory	MEG	7 hr
Aug 8, 10:02 AM CDT	Areal Flood Advisory	MEG	3 hr
Aug 9, 10:51 PM CDT	Dense Fog Advisory	MEG	10 hr
Aug 10, 3:54 AM CDT	Excessive Heat Watch	MEG	23 hr
Aug 10, 3:54 AM CDT	Heat Advisory	MEG	60 hr
Aug 10, 11:09 PM CDT	Dense Fog Advisory	MEG	10 hr
Aug 11, 3:21 AM CDT	Excessive Heat Warning	MEG	65 hr
Aug 13, 6:55 PM CDT	Mesoscale Discussion	SPC	65 min
Aug 13, 7:13 PM CDT	Severe Thunderstorm Warning	MEG	47 min
Aug 13, 7:49 PM CDT	Severe Thunderstorm Warning	MEG	41 min
Aug 13, 7:58 PM CDT	Severe Thunderstorm Warning	MEG	17 min
Aug 18, 11:20 AM CDT	Heat Advisory	MEG	8 hr
Aug 19, 3:59 AM CDT	Heat Advisory	MEG	64 hr
Aug 20, 4:01 PM CDT	Mesoscale Discussion	SPC	89 min
Aug 20, 7:56 PM CDT	Special Weather Statement	MEG	49 min
Aug 20, 8:48 PM CDT	Areal Flood Advisory	MEG	3 hr
Aug 20, 9:32 PM CDT	Flash Flood Warning	MEG	76 min
Aug 27, 5:22 AM CDT	Areal Flood Advisory	MEG	53 min
Sep 11, 11:12 AM CDT	Heat Advisory	MEG	8 min
Sep 11, 11:20 AM CDT	Heat Advisory	MEG	6 hr
Sep 25, 5:03 PM CDT	Mesoscale Discussion	SPC	117 min
Oct 6, 8:09 PM CDT	Areal Flood Advisory	MEG	3 hr
Oct 6, 10:40 PM CDT	Areal Flood Advisory	MEG	5 hr
Oct 9, 1:01 AM CDT	Dense Fog Advisory	MEG	10 hr
Oct 14, 5:47 AM CDT	Dense Fog Advisory	MEG	4 hr
Oct 19, 11:55 PM CDT	Dense Fog Advisory	MEG	9 hr
Oct 21, 3:06 AM CDT	Tornado Watch	SPC	6 hr
Oct 21, 5:56 AM CDT	Severe Thunderstorm Warning	MEG	49 min
Oct 21, 6:13 AM CDT	Severe Thunderstorm Warning	MEG	47 min
Oct 21, 6:20 AM CDT	Severe Thunderstorm Warning	MEG	40 min
Oct 21, 6:26 AM CDT	Tornado Warning	MEG	34 min
Oct 21, 6:40 AM CDT	Tornado Warning	MEG	20 min
Oct 21, 7:01 AM CDT	Severe Thunderstorm Warning	MEG	44 min
Oct 25, 3:44 AM CDT	Flash Flood Watch	MEG	34 hr
Oct 26, 10:04 AM CDT	Areal Flood Advisory	MEG	3 hr
Oct 26, 10:24 AM CDT	River Flood Warning	MEG	22 hr
Oct 30, 3:07 PM CDT	Freeze Watch	MEG	12 hr
Oct 31, 3:19 AM CDT	Freeze Warning	MEG	30 hr
Nov 11, 4:25 AM CST	Wind Advisory	MEG	22 hr
Nov 11, 6:06 PM CST	Winter Weather Advisory	MEG	9 hr
Nov 26, 12:11 PM CST	Wind Advisory	MEG	18 hr
Nov 26, 5:46 PM CST	Areal Flood Advisory	MEG	4 hr
Nov 27, 1:13 AM CST	Special Weather Statement	MEG	17 min
Nov 30, 2:52 PM CST	Wind Advisory	MEG	24 hr
Dec 7, 9:15 PM CST	Dense Fog Advisory	MEG	12 hr
Dec 13, 8:13 PM CST	Dense Fog Advisory	MEG	14 hr
Dec 14, 3:00 AM CST	Dense Fog Advisory	MEG	7 hr
Dec 14, 3:00 AM CST	Freezing Fog Advisory	MEG	3 hr
Dec 16, 8:45 AM CST	Areal Flood Advisory	MEG	2 hr
Dec 28, 10:13 AM CST	River Flood Warning	MEG	47 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	2
Severe Thunderstorm Watch	5
Tornado Watch	4
Mesoscale Discussion	27
Special Weather Statement	30
Flooding
Areal Flood Warning	2
Flash Flood Warning	6
River Flood Warning	13
Flash Flood Watch	7
Areal Flood Advisory	22
River Flood Advisory	5
Winter
Winter Weather Advisory	1
Heat
Excessive Heat Warning	3
Excessive Heat Watch	1
Heat Advisory	15
Cold
Freeze Warning	2
Freeze Watch	2
Wind and dust
Wind Advisory	13
Fog and smoke
Dense Fog Advisory	16
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 2018 2020

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.