Alert archive / Tennessee / Shelby County

Weather alerts in Shelby County, Tennessee, 2015

179 weather alerts in 2015, 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 2015. Tap one for its archive.

Alerts: 179
Warnings: 55
Watches: 24
Advisories: 47
Busiest month: June32 alerts
Busiest day: April 1, 201510 alerts

Over time

By month

Warning verification

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

Shelby County, 2015

	Warnings	With a report	False alarm ratio	Reports	Inside a warning	Mean lead time
Tornado warnings	0			0
Severe thunderstorm warnings	30	13	57%	34	82%	17 min
Flash flood warnings	12	4	67%	7	43%	51 min

Each office's whole area, 2015

	Warnings	With a report	False alarm ratio	Reports	Inside a warning	Mean lead time
NWS Memphis, TN: tornado warnings	33	10	70%	24	75%	21 min
NWS Memphis, TN: severe thunderstorm warnings	273	100	63%	268	67%	20 min
NWS Memphis, TN: flash flood warnings	124	29	77%	74	70%	83 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 2, 7:56 PM CST	Flash Flood Watch	MEG	20 hr
Jan 6, 9:10 PM CST	Wind Chill Advisory	MEG	36 hr
Feb 13, 2:02 PM CST	Wind Advisory	MEG	13 hr
Feb 14, 3:28 AM CST	Winter Storm Watch	MEG	35 hr
Feb 15, 4:47 AM CST	Winter Storm Warning	MEG	39 hr
Feb 16, 2:57 AM CST	Mesoscale Discussion	SPC	6 hr
Feb 16, 9:09 AM CST	Mesoscale Discussion	SPC	5 hr
Feb 18, 3:46 AM CST	Wind Chill Advisory	MEG	32 hr
Feb 18, 3:36 PM CST	Winter Storm Watch	MEG	24 hr
Feb 19, 3:09 PM CST	Winter Storm Warning	MEG	45 hr
Feb 20, 3:00 PM CST	Mesoscale Discussion	SPC	5 hr
Feb 21, 9:23 AM CST	River Flood Warning	MEG	22 hr
Feb 22, 3:33 AM CST	Winter Weather Advisory	MEG	44 hr
Feb 22, 7:42 AM CST	River Flood Warning	MEG	17 hr
Feb 24, 2:42 PM CST	Winter Weather Advisory	MEG	33 hr
Feb 26, 3:31 AM CST	Freezing Fog Advisory	MEG	6 hr
Mar 2, 3:46 AM CST	Winter Storm Watch	MEG	60 hr
Mar 3, 2:08 AM CST	Winter Storm Warning	MEG	57 hr
Mar 3, 4:02 AM CST	Dense Fog Advisory	MEG	8 hr
Mar 3, 8:55 PM CST	Dense Fog Advisory	MEG	6 hr
Mar 4, 2:53 AM CST	Wind Advisory	MEG	29 hr
Mar 4, 7:27 PM CST	Mesoscale Discussion	SPC	6 hr
Mar 5, 2:06 AM CST	Wind Chill Advisory	MEG	30 hr
Mar 10, 2:35 PM CDT	River Flood Advisory	MEG	6 days
Mar 11, 3:16 PM CDT	Flood Watch	MEG	61 hr
Mar 16, 8:12 PM CDT	River Flood Advisory	MEG	4 days
Mar 21, 6:20 AM CDT	River Flood Advisory	MEG	12 days
Mar 27, 2:20 PM CDT	Frost Advisory	MEG	17 hr
Mar 28, 2:59 PM CDT	Frost Advisory	MEG	18 hr
Mar 31, 2:25 PM CDT	Mesoscale Discussion	SPC	2 hr
Mar 31, 5:13 PM CDT	Severe Thunderstorm Watch	SPC	7 hr
Mar 31, 8:50 PM CDT	Mesoscale Discussion	SPC	85 min
Mar 31, 10:28 PM CDT	Severe Thunderstorm Warning	MEG	62 min
Mar 31, 11:02 PM CDT	Flash Flood Watch	MEG	4 hr
Mar 31, 11:11 PM CDT	Flash Flood Warning	MEG	3 hr
Mar 31, 11:18 PM CDT	Severe Thunderstorm Warning	MEG	32 min
Mar 31, 11:43 PM CDT	Mesoscale Discussion	SPC	92 min
Mar 31, 11:53 PM CDT	Severe Thunderstorm Warning	MEG	52 min
Apr 1, 4:22 PM CDT	Severe Thunderstorm Warning	MEG	38 min
Apr 1, 5:00 PM CDT	Severe Thunderstorm Warning	MEG	45 min
Apr 1, 5:14 PM CDT	Mesoscale Discussion	SPC	91 min
Apr 2, 11:50 AM CDT	Mesoscale Discussion	SPC	85 min
Apr 3, 3:57 PM CDT	Mesoscale Discussion	SPC	93 min
Apr 9, 6:11 PM CDT	Mesoscale Discussion	SPC	64 min
Apr 9, 6:32 PM CDT	Severe Thunderstorm Watch	SPC	5 hr
Apr 9, 10:01 PM CDT	Mesoscale Discussion	SPC	119 min
Apr 13, 7:56 PM CDT	Flash Flood Warning	MEG	3 hr
Apr 13, 8:15 PM CDT	Flash Flood Warning	MEG	3 hr
Apr 14, 10:59 AM CDT	River Flood Advisory	MEG	4 days
Apr 19, 8:02 PM CDT	Tornado Watch	SPC	5 hr
Apr 19, 9:47 PM CDT	River Flood Advisory	MEG	10 days
Apr 19, 10:16 PM CDT	Mesoscale Discussion	SPC	59 min
Apr 25, 8:57 AM CDT	Wind Advisory	MEG	10 hr
May 17, 3:47 AM CDT	Flash Flood Watch	MEG	31 hr
May 24, 3:30 PM CDT	Flash Flood Watch	MEG	36 hr
May 24, 4:14 PM CDT	Tornado Watch	SPC	8 hr
May 24, 5:23 PM CDT	Severe Thunderstorm Warning	MEG	52 min
May 24, 6:04 PM CDT	Mesoscale Discussion	SPC	116 min
May 24, 6:05 PM CDT	Severe Thunderstorm Warning	MEG	27 min
May 24, 8:41 PM CDT	Mesoscale Discussion	SPC	64 min
May 24, 11:09 PM CDT	Flash Flood Warning	MEG	3 hr
May 25, 8:52 PM CDT	Mesoscale Discussion	SPC	83 min
Jun 5, 6:27 PM CDT	Severe Thunderstorm Watch	SPC	5 hr
Jun 5, 7:59 PM CDT	Special Weather Statement	MEG	46 min
Jun 5, 8:42 PM CDT	Special Weather Statement	MEG	48 min
Jun 5, 9:17 PM CDT	Mesoscale Discussion	SPC	58 min
Jun 8, 12:08 PM CDT	Mesoscale Discussion	SPC	97 min
Jun 8, 12:57 PM CDT	Severe Thunderstorm Watch	SPC	8 hr
Jun 8, 7:05 PM CDT	Mesoscale Discussion	SPC	55 min
Jun 8, 8:18 PM CDT	Severe Thunderstorm Warning	MEG	29 min
Jun 8, 8:41 PM CDT	Special Weather Statement	MEG	49 min
Jun 8, 9:35 PM CDT	Special Weather Statement	MEG	55 min
Jun 8, 10:04 PM CDT	Severe Thunderstorm Warning	MEG	41 min
Jun 19, 4:22 AM CDT	Mesoscale Discussion	SPC	53 min
Jun 21, 3:46 AM CDT	Heat Advisory	MEG	15 hr
Jun 21, 12:26 PM CDT	River Flood Advisory	MEG	39 days
Jun 21, 7:08 PM CDT	Heat Advisory	MEG	24 hr
Jun 22, 7:08 PM CDT	Heat Advisory	MEG	24 hr
Jun 23, 7:24 PM CDT	Heat Advisory	MEG	24 hr
Jun 24, 2:53 PM CDT	Heat Advisory	MEG	28 hr
Jun 26, 12:18 PM CDT	Severe Thunderstorm Watch	SPC	7 hr
Jun 26, 3:16 PM CDT	Mesoscale Discussion	SPC	89 min
Jun 26, 4:50 PM CDT	Severe Thunderstorm Warning	MEG	25 min
Jun 26, 5:13 PM CDT	Severe Thunderstorm Warning	MEG	47 min
Jun 26, 5:39 PM CDT	Special Weather Statement	MEG	36 min
Jun 26, 7:13 PM CDT	Mesoscale Discussion	SPC	62 min
Jun 29, 6:55 PM CDT	Special Weather Statement	MEG	35 min
Jun 29, 7:35 PM CDT	Severe Thunderstorm Warning	MEG	40 min
Jun 29, 9:18 PM CDT	Severe Thunderstorm Warning	MEG	42 min
Jun 29, 10:08 PM CDT	Areal Flood Advisory	MEG	3 hr
Jun 29, 10:21 PM CDT	Special Weather Statement	MEG	39 min
Jun 29, 10:47 PM CDT	Severe Thunderstorm Warning	MEG	43 min
Jun 29, 11:30 PM CDT	Severe Thunderstorm Warning	MEG	45 min
Jun 29, 11:39 PM CDT	Flash Flood Warning	MEG	3 hr
Jul 2, 5:50 PM CDT	Mesoscale Discussion	SPC	115 min
Jul 2, 11:10 PM CDT	Special Weather Statement	MEG	50 min
Jul 3, 7:52 AM CDT	Flash Flood Warning	MEG	6 hr
Jul 3, 8:31 AM CDT	Flash Flood Watch	MEG	34 hr
Jul 3, 12:00 PM CDT	Flash Flood Warning	MEG	3 hr
Jul 3, 3:13 PM CDT	Areal Flood Warning	MEG	6 hr
Jul 12, 3:09 AM CDT	Heat Advisory	MEG	9 days
Jul 14, 12:13 PM CDT	Severe Thunderstorm Watch	SPC	7 hr
Jul 14, 2:41 PM CDT	Mesoscale Discussion	SPC	94 min
Jul 14, 3:16 PM CDT	Special Weather Statement	MEG	44 min
Jul 14, 3:21 PM CDT	Severe Thunderstorm Warning	MEG	39 min
Jul 14, 3:52 PM CDT	Severe Thunderstorm Warning	MEG	38 min
Jul 14, 3:55 PM CDT	Mesoscale Discussion	SPC	65 min
Jul 14, 4:08 PM CDT	Severe Thunderstorm Warning	MEG	37 min
Jul 14, 5:24 PM CDT	Mesoscale Discussion	SPC	2 hr
Jul 22, 8:30 PM CDT	Severe Thunderstorm Warning	MEG	24 min
Jul 23, 12:51 PM CDT	Special Weather Statement	MEG	39 min
Jul 23, 1:17 PM CDT	Flash Flood Warning	MEG	118 min
Jul 24, 4:03 AM CDT	Heat Advisory	MEG	6 days
Jul 25, 3:55 AM CDT	Excessive Heat Warning	MEG	48 hr
Jul 26, 3:23 AM CDT	Heat Advisory	MEG	59 hr
Jul 28, 2:07 PM CDT	Excessive Heat Warning	MEG	30 hr
Aug 5, 1:59 PM CDT	Severe Thunderstorm Watch	SPC	4 hr
Aug 5, 3:53 PM CDT	Mesoscale Discussion	SPC	97 min
Aug 5, 4:05 PM CDT	Severe Thunderstorm Warning	MEG	25 min
Aug 5, 4:23 PM CDT	Severe Thunderstorm Warning	MEG	52 min
Aug 5, 4:41 PM CDT	Severe Thunderstorm Warning	MEG	49 min
Aug 5, 4:58 PM CDT	Flash Flood Warning	MEG	3 hr
Aug 5, 5:13 PM CDT	Areal Flood Advisory	MEG	3 hr
Aug 5, 10:25 PM CDT	Severe Thunderstorm Warning	MEG	50 min
Aug 5, 11:08 PM CDT	Severe Thunderstorm Warning	MEG	37 min
Aug 5, 11:41 PM CDT	Severe Thunderstorm Warning	MEG	34 min
Aug 6, 12:29 AM CDT	Areal Flood Advisory	MEG	3 hr
Aug 7, 7:59 AM CDT	Severe Thunderstorm Warning	MEG	46 min
Aug 7, 8:22 AM CDT	Severe Thunderstorm Warning	MEG	23 min
Aug 7, 8:39 AM CDT	Mesoscale Discussion	SPC	66 min
Aug 8, 3:31 AM CDT	Excessive Heat Warning	MEG	48 hr
Aug 8, 3:31 AM CDT	Heat Advisory	MEG	48 hr
Aug 9, 3:29 AM CDT	Heat Advisory	MEG	41 hr
Aug 10, 5:44 AM CDT	Special Weather Statement	MEG	46 min
Aug 10, 7:32 AM CDT	Areal Flood Advisory	MEG	118 min
Aug 15, 3:23 PM CDT	Special Weather Statement	MEG	37 min
Aug 15, 3:52 PM CDT	Severe Thunderstorm Warning	MEG	38 min
Aug 19, 12:30 PM CDT	Mesoscale Discussion	SPC	3 hr
Sep 2, 4:21 PM CDT	Flash Flood Warning	MEG	3 hr
Sep 9, 1:50 PM CDT	Flash Flood Warning	MEG	3 hr
Oct 17, 3:07 AM CDT	Frost Advisory	MEG	29 hr
Oct 18, 3:33 AM CDT	Frost Advisory	MEG	28 hr
Nov 1, 1:07 AM CDT	Dense Fog Advisory	MEG	9 hr
Nov 2, 9:38 PM CST	Dense Fog Advisory	MEG	11 hr
Nov 10, 3:47 AM CST	Dense Fog Advisory	MEG	6 hr
Nov 13, 3:20 AM CST	Frost Advisory	MEG	30 hr
Nov 13, 3:20 AM CST	Freeze Warning	MEG	30 hr
Nov 16, 3:23 AM CST	Flash Flood Watch	MEG	52 hr
Nov 16, 2:10 PM CST	Wind Advisory	MEG	37 hr
Nov 17, 9:59 AM CST	Mesoscale Discussion	SPC	2 hr
Nov 17, 1:35 PM CST	Mesoscale Discussion	SPC	115 min
Nov 17, 3:15 PM CST	Tornado Watch	SPC	4 hr
Nov 17, 5:36 PM CST	Mesoscale Discussion	SPC	84 min
Nov 17, 8:30 PM CST	Flash Flood Warning	MEG	4 hr
Nov 18, 3:52 AM CST	River Flood Warning	MEG	15 hr
Nov 20, 2:07 PM CST	Freeze Watch	MEG	12 hr
Nov 20, 2:07 PM CST	Wind Advisory	MEG	12 hr
Nov 21, 2:18 AM CST	Freeze Warning	MEG	31 hr
Nov 21, 2:18 AM CST	Freeze Warning	MEG	55 hr
Dec 9, 8:33 PM CST	Dense Fog Advisory	MEG	14 hr
Dec 11, 6:03 AM CST	Dense Fog Advisory	MEG	5 hr
Dec 12, 2:34 PM CST	Wind Advisory	MEG	33 hr
Dec 23, 9:05 AM CST	Mesoscale Discussion	SPC	85 min
Dec 23, 10:58 AM CST	Mesoscale Discussion	SPC	2 hr
Dec 23, 11:57 AM CST	Tornado Watch PDS	SPC	9 hr
Dec 23, 12:48 PM CST	Mesoscale Discussion	SPC	57 min
Dec 23, 2:49 PM CST	Mesoscale Discussion	SPC	86 min
Dec 23, 3:51 PM CST	Severe Thunderstorm Warning	MEG	24 min
Dec 24, 8:18 PM CST	Flash Flood Watch	MEG	25 hr
Dec 24, 8:23 PM CST	River Flood Advisory	MEG	4 days
Dec 24, 11:24 PM CST	Mesoscale Discussion	SPC	3 hr
Dec 25, 1:48 AM CST	Mesoscale Discussion	SPC	2 hr
Dec 25, 2:32 AM CST	Flash Flood Watch	MEG	3 days
Dec 25, 9:35 PM CST	Dense Fog Advisory	MEG	7 hr
Dec 26, 4:29 AM CST	Mesoscale Discussion	SPC	3 hr
Dec 27, 12:54 PM CST	Wind Advisory	MEG	29 hr
Dec 28, 5:14 AM CST	Mesoscale Discussion	SPC	2 hr
Dec 28, 6:23 AM CST	Severe Thunderstorm Warning	MEG	67 min
Dec 28, 7:30 AM CST	Special Weather Statement	MEG	45 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	30
Severe Thunderstorm Watch	7
Tornado Watch	4
Mesoscale Discussion	40
Special Weather Statement	13
Flooding
Areal Flood Warning	1
Flash Flood Warning	12
River Flood Warning	3
Flash Flood Watch	8
Flood Watch	1
Areal Flood Advisory	4
River Flood Advisory	7
Winter
Winter Storm Warning	3
Winter Storm Watch	3
Winter Weather Advisory	2
Heat
Excessive Heat Warning	3
Heat Advisory	10
Cold
Freeze Warning	3
Freeze Watch	1
Frost Advisory	5
Wind Chill Advisory	3
Wind and dust
Wind Advisory	7
Fog and smoke
Dense Fog Advisory	8
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 2014 2016

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.