Alert archive / Tennessee / Shelby County

Weather alerts in Shelby County, Tennessee, 2016

172 weather alerts in 2016, 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 2016. Tap one for its archive.

Alerts: 172
Warnings: 76
Watches: 16
Advisories: 39
Busiest month: March54 alerts
Busiest day: March 31, 201620 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 1 tornado warnings covering Shelby County in 2016 had a tornado report inside them.

Shelby County, 2016

	Warnings	With a report	False alarm ratio	Reports	Inside a warning	Mean lead time
Tornado warnings	1	0	100%	0
Severe thunderstorm warnings	24	12	50%	14	57%	18 min
Flash flood warnings	29	10	66%	15	87%	35 min

Each office's whole area, 2016

	Warnings	With a report	False alarm ratio	Reports	Inside a warning	Mean lead time
NWS Memphis, TN: tornado warnings	30	7	77%	11	64%	15 min
NWS Memphis, TN: severe thunderstorm warnings	225	76	66%	179	64%	23 min
NWS Memphis, TN: flash flood warnings	157	36	77%	80	74%	94 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 9, 2:54 AM CST	Special Weather Statement	MEG	36 min
Jan 11, 11:13 AM CST	River Flood Advisory	MEG	4 days
Jan 17, 9:19 PM CST	River Flood Advisory	MEG	4 days
Jan 19, 3:17 AM CST	Winter Weather Advisory	MEG	31 hr
Jan 20, 1:33 PM CST	Winter Storm Watch	MEG	26 hr
Jan 21, 4:39 AM CST	Winter Storm Warning	MEG	40 hr
Jan 22, 3:58 AM CST	Mesoscale Discussion	SPC	5 hr
Jan 31, 8:28 AM CST	Wind Advisory	MEG	10 hr
Feb 1, 3:55 PM CST	Wind Advisory	MEG	26 hr
Feb 2, 12:02 PM CST	Flash Flood Warning	MEG	3 hr
Feb 2, 12:22 PM CST	Tornado Watch	SPC	9 hr
Feb 2, 3:29 PM CST	Flash Flood Warning	MEG	2 hr
Feb 2, 3:45 PM CST	Special Weather Statement	MEG	45 min
Feb 2, 4:06 PM CST	Flash Flood Warning	MEG	114 min
Feb 2, 8:14 PM CST	River Flood Warning	MEG	16 hr
Feb 8, 3:52 AM CST	Wind Advisory	MEG	14 hr
Feb 15, 7:09 PM CST	Dense Fog Advisory	MEG	15 hr
Feb 23, 3:49 AM CST	Wind Advisory	MEG	38 hr
Feb 27, 8:40 PM CST	River Flood Advisory	MEG	5 days
Mar 9, 3:53 AM CST	Flash Flood Watch	MEG	24 hr
Mar 9, 11:36 AM CST	River Flood Warning	MEG	67 hr
Mar 9, 4:45 PM CST	Flash Flood Warning	MEG	7 hr
Mar 9, 7:37 PM CST	Flash Flood Warning	MEG	7 hr
Mar 9, 11:20 PM CST	Areal Flood Warning	MEG	8 hr
Mar 9, 11:24 PM CST	Areal Flood Warning	MEG	8 hr
Mar 10, 1:47 AM CST	River Flood Warning	MEG	4 days
Mar 10, 2:58 AM CST	Areal Flood Warning	MEG	6 hr
Mar 10, 3:40 AM CST	Flood Watch	MEG	12 hr
Mar 10, 6:57 AM CST	Areal Flood Warning	MEG	6 hr
Mar 10, 7:05 AM CST	Areal Flood Warning	MEG	6 hr
Mar 10, 8:43 AM CST	Areal Flood Warning	MEG	6 hr
Mar 10, 11:13 AM CST	Flash Flood Warning	MEG	3 hr
Mar 10, 11:47 AM CST	River Flood Warning	MEG	43 hr
Mar 10, 2:11 PM CST	Areal Flood Warning	MEG	12 hr
Mar 10, 3:24 PM CST	Flash Flood Watch	MEG	4 days
Mar 12, 4:09 PM CST	Flash Flood Warning	MEG	7 hr
Mar 12, 9:27 PM CST	River Flood Warning	MEG	26 hr
Mar 12, 11:04 PM CST	Areal Flood Warning	MEG	10 hr
Mar 12, 11:07 PM CST	River Flood Warning	MEG	19 hr
Mar 13, 6:41 PM CDT	Mesoscale Discussion	SPC	94 min
Mar 13, 7:11 PM CDT	Tornado Watch	SPC	6 hr
Mar 13, 9:19 PM CDT	Severe Thunderstorm Warning	MEG	41 min
Mar 13, 9:36 PM CDT	Tornado Warning	MEG	25 min
Mar 13, 9:49 PM CDT	Mesoscale Discussion	SPC	116 min
Mar 13, 10:00 PM CDT	Severe Thunderstorm Warning	MEG	45 min
Mar 13, 10:02 PM CDT	Flash Flood Warning	MEG	4 hr
Mar 13, 10:57 PM CDT	Severe Thunderstorm Warning	MEG	17 min
Mar 13, 11:31 PM CDT	Flash Flood Warning	MEG	3 hr
Mar 20, 3:55 AM CDT	Frost Advisory	MEG	29 hr
Mar 22, 1:35 AM CDT	Wind Advisory	MEG	18 hr
Mar 23, 2:08 AM CDT	Wind Advisory	MEG	29 hr
Mar 29, 3:20 PM CDT	Flash Flood Watch	MEG	51 hr
Mar 30, 6:53 PM CDT	Tornado Watch	SPC	8 hr
Mar 31, 12:01 AM CDT	Flash Flood Warning	MEG	3 hr
Mar 31, 1:08 AM CDT	Flash Flood Warning	MEG	3 hr
Mar 31, 1:36 AM CDT	Flash Flood Warning	MEG	3 hr
Mar 31, 3:19 AM CDT	Flash Flood Warning	MEG	3 hr
Mar 31, 4:11 AM CDT	Flash Flood Warning	MEG	64 min
Mar 31, 4:19 AM CDT	Flash Flood Warning	MEG	56 min
Mar 31, 6:44 AM CDT	River Flood Warning	MEG	14 hr
Mar 31, 10:26 AM CDT	Mesoscale Discussion	SPC	3 hr
Mar 31, 10:58 AM CDT	Severe Thunderstorm Watch	SPC	5 hr
Mar 31, 12:50 PM CDT	Severe Thunderstorm Warning	MEG	40 min
Mar 31, 1:26 PM CDT	Severe Thunderstorm Warning	MEG	49 min
Mar 31, 1:32 PM CDT	Special Weather Statement	MEG	28 min
Mar 31, 1:53 PM CDT	Severe Thunderstorm Warning	MEG	37 min
Mar 31, 2:14 PM CDT	Mesoscale Discussion	SPC	91 min
Mar 31, 2:18 PM CDT	Special Weather Statement	MEG	27 min
Mar 31, 2:23 PM CDT	Areal Flood Advisory	MEG	2 hr
Mar 31, 4:29 PM CDT	Severe Thunderstorm Warning	MEG	46 min
Mar 31, 5:14 PM CDT	Severe Thunderstorm Warning	MEG	46 min
Mar 31, 5:36 PM CDT	Severe Thunderstorm Warning	MEG	39 min
Mar 31, 5:40 PM CDT	River Flood Warning	MEG	24 hr
Apr 6, 2:40 PM CDT	Mesoscale Discussion	SPC	2 hr
Apr 9, 2:40 PM CDT	Wind Advisory	MEG	30 hr
Apr 14, 6:03 PM CDT	Flash Flood Warning	MEG	117 min
Apr 29, 12:47 PM CDT	Flash Flood Warning	MEG	3 hr
Apr 29, 3:26 PM CDT	Flash Flood Watch	MEG	19 hr
Apr 30, 10:03 AM CDT	Special Weather Statement	MEG	57 min
Apr 30, 11:23 AM CDT	Special Weather Statement	MEG	52 min
Apr 30, 12:07 PM CDT	Special Weather Statement	MEG	83 min
May 1, 1:36 PM CDT	Severe Thunderstorm Watch	SPC	6 hr
May 1, 8:13 PM CDT	Flash Flood Warning	MEG	3 hr
May 2, 6:53 AM CDT	Special Weather Statement	MEG	37 min
May 10, 1:42 AM CDT	Mesoscale Discussion	SPC	93 min
May 12, 9:10 AM CDT	Mesoscale Discussion	SPC	95 min
May 25, 2:49 PM CDT	Special Weather Statement	MEG	41 min
May 25, 3:29 PM CDT	Severe Thunderstorm Warning	MEG	46 min
May 25, 4:09 PM CDT	Flash Flood Warning	MEG	3 hr
May 26, 4:52 PM CDT	Severe Thunderstorm Warning	MEG	38 min
May 26, 5:10 PM CDT	Severe Thunderstorm Warning	MEG	50 min
May 27, 6:03 PM CDT	Special Weather Statement	MEG	42 min
Jun 1, 4:32 PM CDT	Flash Flood Warning	MEG	118 min
Jun 3, 4:15 PM CDT	Flash Flood Warning	MEG	2 hr
Jun 13, 4:29 PM CDT	Flash Flood Warning	MEG	3 hr
Jun 15, 4:08 AM CDT	Heat Advisory	MEG	60 hr
Jun 15, 12:05 PM CDT	Mesoscale Discussion	SPC	85 min
Jun 15, 12:39 PM CDT	Severe Thunderstorm Watch	SPC	8 hr
Jun 15, 6:29 PM CDT	Mesoscale Discussion	SPC	91 min
Jun 15, 7:19 PM CDT	Severe Thunderstorm Warning	MEG	41 min
Jun 15, 7:59 PM CDT	Special Weather Statement	MEG	46 min
Jun 15, 8:07 PM CDT	Severe Thunderstorm Warning	MEG	38 min
Jun 16, 10:31 AM CDT	Excessive Heat Warning	MEG	8 hr
Jun 16, 10:31 AM CDT	Heat Advisory	MEG	32 hr
Jun 23, 3:27 AM CDT	Heat Advisory	MEG	39 hr
Jun 25, 10:36 AM CDT	Heat Advisory	MEG	32 hr
Jun 27, 4:00 PM CDT	Special Weather Statement	MEG	45 min
Jun 27, 4:17 PM CDT	Flash Flood Warning	MEG	118 min
Jul 4, 3:12 PM CDT	Special Weather Statement	MEG	48 min
Jul 4, 3:25 PM CDT	Areal Flood Advisory	MEG	3 hr
Jul 6, 2:21 AM CDT	Heat Advisory	MEG	13 hr
Jul 7, 2:08 AM CDT	Heat Advisory	MEG	16 hr
Jul 8, 1:40 PM CDT	Heat Advisory	MEG	5 hr
Jul 8, 2:26 PM CDT	Severe Thunderstorm Watch	SPC	5 hr
Jul 9, 9:29 PM CDT	Flash Flood Warning	MEG	3 hr
Jul 14, 9:23 AM CDT	Special Weather Statement	MEG	52 min
Jul 14, 9:51 AM CDT	Flash Flood Warning	MEG	114 min
Jul 15, 2:15 PM CDT	Mesoscale Discussion	SPC	2 hr
Jul 15, 4:39 PM CDT	Severe Thunderstorm Warning	MEG	51 min
Jul 15, 5:01 PM CDT	Flash Flood Warning	MEG	119 min
Jul 15, 6:13 PM CDT	Severe Thunderstorm Warning	MEG	47 min
Jul 15, 7:18 PM CDT	Flash Flood Warning	MEG	87 min
Jul 15, 7:30 PM CDT	Special Weather Statement	MEG	15 min
Jul 18, 3:18 AM CDT	Heat Advisory	MEG	6 days
Jul 19, 3:21 PM CDT	Special Weather Statement	MEG	39 min
Jul 20, 11:41 AM CDT	Mesoscale Discussion	SPC	3 hr
Jul 20, 2:27 PM CDT	Severe Thunderstorm Warning	MEG	48 min
Jul 20, 3:11 PM CDT	Severe Thunderstorm Warning	MEG	28 min
Jul 22, 8:08 AM CDT	Excessive Heat Warning	MEG	12 hr
Jul 22, 8:08 AM CDT	Heat Advisory	MEG	50 hr
Jul 22, 11:36 AM CDT	Mesoscale Discussion	SPC	2 hr
Jul 26, 10:39 AM CDT	Heat Advisory	MEG	9 hr
Jul 28, 5:05 AM CDT	Flash Flood Warning	MEG	3 hr
Jul 29, 5:13 PM CDT	Special Weather Statement	MEG	47 min
Jul 29, 5:31 PM CDT	Severe Thunderstorm Warning	MEG	29 min
Jul 29, 6:43 PM CDT	Severe Thunderstorm Warning	MEG	21 min
Jul 30, 8:10 AM CDT	Areal Flood Advisory	MEG	65 min
Aug 1, 3:37 PM CDT	Heat Advisory	MEG	5 days
Aug 2, 3:03 PM CDT	Heat Advisory	MEG	4 days
Aug 4, 11:36 AM CDT	Excessive Heat Warning	MEG	32 hr
Aug 11, 2:58 AM CDT	Heat Advisory	MEG	15 hr
Aug 14, 2:34 PM CDT	Special Weather Statement	MEG	41 min
Aug 25, 9:26 AM CDT	Heat Advisory	MEG	10 hr
Aug 25, 4:58 PM CDT	Flash Flood Warning	MEG	3 hr
Sep 10, 1:05 PM CDT	Mesoscale Discussion	SPC	2 hr
Sep 18, 7:56 AM CDT	Dense Fog Advisory	MEG	2 hr
Sep 19, 2:30 AM CDT	Dense Fog Advisory	MEG	7 hr
Oct 7, 2:46 PM CDT	Fire Weather Watch	MEG	13 hr
Oct 8, 4:08 AM CDT	Red Flag Warning	MEG	15 hr
Oct 15, 2:49 AM CDT	Dense Fog Advisory	MEG	6 hr
Nov 12, 3:19 AM CST	Frost Advisory	MEG	30 hr
Nov 18, 3:22 PM CST	Freeze Watch	MEG	12 hr
Nov 18, 5:02 PM CST	Special Weather Statement	MEG	28 min
Nov 18, 5:25 PM CST	Severe Thunderstorm Warning	MEG	35 min
Nov 19, 3:18 AM CST	Freeze Warning	MEG	29 hr
Nov 26, 4:43 AM CST	Dense Fog Advisory	MEG	4 hr
Nov 27, 12:46 AM CST	Dense Fog Advisory	MEG	8 hr
Nov 27, 2:04 PM CST	Wind Advisory	MEG	28 hr
Nov 28, 12:00 PM CST	Special Weather Statement	MEG	60 min
Nov 28, 12:59 PM CST	Special Weather Statement	MEG	46 min
Dec 17, 12:16 PM CST	Winter Weather Advisory	MEG	18 hr
Dec 17, 1:00 PM CST	Mesoscale Discussion	SPC	2 hr
Dec 17, 1:42 PM CST	Tornado Watch	SPC	7 hr
Dec 17, 5:45 PM CST	Mesoscale Discussion	SPC	90 min
Dec 17, 8:38 PM CST	Special Weather Statement	MEG	37 min
Dec 17, 8:54 PM CST	Severe Thunderstorm Warning	MEG	51 min
Dec 24, 6:16 PM CST	Dense Fog Advisory	MEG	17 hr
Dec 28, 1:48 PM CST	Special Weather Statement	MEG	27 min
Dec 28, 1:59 PM CST	Severe Thunderstorm Warning	MEG	31 min
Dec 28, 2:28 PM CST	Severe Thunderstorm Warning	MEG	32 min
Dec 28, 3:31 PM CST	Special Weather Statement	MEG	29 min
Dec 28, 3:51 PM CST	Mesoscale Discussion	SPC	114 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	24
Tornado Warning	1
Severe Thunderstorm Watch	4
Tornado Watch	4
Mesoscale Discussion	17
Special Weather Statement	24
Flooding
Areal Flood Warning	8
Flash Flood Warning	29
River Flood Warning	8
Flash Flood Watch	4
Flood Watch	1
Areal Flood Advisory	3
River Flood Advisory	3
Winter
Winter Storm Warning	1
Winter Storm Watch	1
Winter Weather Advisory	2
Heat
Excessive Heat Warning	3
Heat Advisory	14
Cold
Freeze Warning	1
Freeze Watch	1
Frost Advisory	2
Wind and dust
Wind Advisory	8
Fire
Red Flag Warning	1
Fire Weather Watch	1
Fog and smoke
Dense Fog Advisory	7

The busiest days

Days with the most alerts issued, by UTC date.

Nearby

Alerts in force now Tornadoes on record Forecast The radar archive 2015 2017

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.