Weather alerts in Shelby County, Texas, 2019

194 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: 194
Warnings: 59
Watches: 20
Advisories: 56
Busiest month: April62 alerts
Busiest day: April 13, 201921 alerts

Over time

By month

Warning verification

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

2 of 4 tornado warnings covering Shelby County in 2019 had a tornado report inside them; 2 of 3 tornado reports fell inside a warning, on average 16 minutes after it went out.

Shelby County, 2019

	Warnings	With a report	False alarm ratio	Reports	Inside a warning	Mean lead time
Tornado warnings	4	2	50%	3	67%	16 min
Severe thunderstorm warnings	30	19	37%	6	83%	18 min
Flash flood warnings	9	6	33%	0

Each office's whole area, 2019

	Warnings	With a report	False alarm ratio	Reports	Inside a warning	Mean lead time
NWS Shreveport, LA: tornado warnings	92	24	74%	60	73%	16 min
NWS Shreveport, LA: severe thunderstorm warnings	327	180	45%	449	72%	23 min
NWS Shreveport, LA: flash flood warnings	47	32	32%	90	82%	115 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 1, 3:34 PM CST	Flash Flood Watch	SHV	48 hr
Jan 12, 4:03 AM CST	Lake Wind Advisory	SHV	15 hr
Jan 18, 3:59 AM CST	Dense Fog Advisory	SHV	6 hr
Jan 18, 3:46 PM CST	Lake Wind Advisory	SHV	30 hr
Jan 21, 4:33 AM CST	Lake Wind Advisory	SHV	11 hr
Jan 22, 3:34 PM CST	Lake Wind Advisory	SHV	24 hr
Jan 23, 7:17 AM CST	River Flood Warning	SHV	8 days
Jan 23, 7:25 AM CST	River Flood Warning	SHV	3 days
Jan 27, 4:25 AM CST	Dense Fog Advisory	SHV	6 hr
Jan 28, 5:11 AM CST	Lake Wind Advisory	SHV	22 hr
Feb 6, 3:58 PM CST	Lake Wind Advisory	SHV	26 hr
Feb 8, 4:12 PM CST	Winter Weather Advisory	SHV	17 hr
Feb 11, 2:25 PM CST	Lake Wind Advisory	SHV	24 hr
Feb 13, 3:45 PM CST	Lake Wind Advisory	SHV	26 hr
Feb 19, 6:21 AM CST	Mesoscale Discussion	SPC	2 hr
Feb 22, 7:37 PM CST	Dense Fog Advisory	SHV	13 hr
Feb 22, 9:39 PM CST	River Flood Warning	SHV	3 days
Feb 23, 6:57 AM CST	Mesoscale Discussion	SPC	2 hr
Feb 23, 9:18 AM CST	Lake Wind Advisory	SHV	9 hr
Feb 26, 9:55 AM CST	River Flood Warning	SHV	3 days
Mar 4, 3:06 PM CST	Freeze Warning	SHV	19 hr
Mar 5, 3:45 AM CST	Freeze Warning	SHV	29 hr
Mar 8, 2:31 PM CST	Lake Wind Advisory	SHV	25 hr
Mar 9, 12:04 PM CST	Special Weather Statement	SHV	41 min
Mar 9, 12:50 PM CST	Special Weather Statement	SHV	40 min
Mar 9, 1:44 PM CST	Special Weather Statement	SHV	46 min
Mar 10, 4:04 AM CDT	Dense Fog Advisory	SHV	6 hr
Mar 12, 3:49 PM CDT	Lake Wind Advisory	SHV	31 hr
Mar 14, 1:59 AM CDT	Severe Thunderstorm Watch	SPC	5 hr
Mar 14, 4:07 AM CDT	Mesoscale Discussion	SPC	83 min
Mar 14, 4:11 AM CDT	Severe Thunderstorm Warning	SHV	49 min
Mar 14, 5:01 AM CDT	Special Weather Statement	SHV	44 min
Mar 15, 10:07 AM CDT	Lake Wind Advisory	SHV	6 hr
Mar 25, 4:35 AM CDT	Special Weather Statement	SHV	55 min
Mar 30, 5:20 AM CDT	Lake Wind Advisory	SHV	16 hr
Apr 4, 5:25 PM CDT	Special Weather Statement	SHV	50 min
Apr 4, 5:38 PM CDT	Severe Thunderstorm Watch	SPC	6 hr
Apr 4, 5:57 PM CDT	Special Weather Statement	SHV	48 min
Apr 4, 7:44 PM CDT	Mesoscale Discussion	SPC	91 min
Apr 6, 9:08 AM CDT	Mesoscale Discussion	SPC	3 hr
Apr 6, 10:35 AM CDT	Tornado Watch	SPC	7 hr
Apr 6, 1:09 PM CDT	Mesoscale Discussion	SPC	96 min
Apr 6, 3:03 PM CDT	Mesoscale Discussion	SPC	87 min
Apr 6, 4:48 PM CDT	Mesoscale Discussion	SPC	117 min
Apr 6, 5:54 PM CDT	Tornado Watch	SPC	4 hr
Apr 6, 7:13 PM CDT	Severe Thunderstorm Warning	SHV	23 min
Apr 6, 7:44 PM CDT	Mesoscale Discussion	SPC	2 hr
Apr 6, 8:53 PM CDT	Special Weather Statement	SHV	52 min
Apr 6, 9:14 PM CDT	Severe Thunderstorm Warning	SHV	46 min
Apr 7, 5:29 AM CDT	Mesoscale Discussion	SPC	2 hr
Apr 7, 10:00 AM CDT	River Flood Warning	SHV	3 days
Apr 7, 12:27 PM CDT	Mesoscale Discussion	SPC	93 min
Apr 7, 1:00 PM CDT	Tornado Warning	SHV	12 min
Apr 7, 1:11 PM CDT	Severe Thunderstorm Watch	SPC	6 hr
Apr 7, 2:49 PM CDT	Mesoscale Discussion	SPC	86 min
Apr 7, 3:51 PM CDT	Severe Thunderstorm Warning	SHV	54 min
Apr 7, 4:43 PM CDT	Areal Flood Advisory	SHV	3 hr
Apr 10, 3:58 AM CDT	Lake Wind Advisory	SHV	24 hr
Apr 12, 9:39 PM CDT	River Flood Warning	SHV	15 days
Apr 13, 12:20 AM CDT	Special Weather Statement	SHV	40 min
Apr 13, 1:52 AM CDT	Mesoscale Discussion	SPC	113 min
Apr 13, 2:53 AM CDT	Lake Wind Advisory	SHV	37 hr
Apr 13, 3:27 AM CDT	Flash Flood Watch	SHV	16 hr
Apr 13, 9:15 AM CDT	Special Weather Statement	SHV	45 min
Apr 13, 9:18 AM CDT	Severe Thunderstorm Warning	SHV	42 min
Apr 13, 9:49 AM CDT	Mesoscale Discussion	SPC	56 min
Apr 13, 9:53 AM CDT	Severe Thunderstorm Warning	SHV	14 min
Apr 13, 10:01 AM CDT	Severe Thunderstorm Watch	SPC	5 hr
Apr 13, 10:21 AM CDT	Flash Flood Warning	SHV	3 hr
Apr 13, 10:31 AM CDT	Severe Thunderstorm Warning	SHV	29 min
Apr 13, 11:26 AM CDT	Tornado Watch	SPC	8 hr
Apr 13, 11:52 AM CDT	Mesoscale Discussion	SPC	83 min
Apr 13, 1:38 PM CDT	Mesoscale Discussion	SPC	97 min
Apr 13, 2:19 PM CDT	Severe Thunderstorm Warning	SHV	41 min
Apr 13, 2:37 PM CDT	Tornado Warning	SHV	10 min
Apr 13, 2:41 PM CDT	Severe Thunderstorm Warning	SHV	45 min
Apr 13, 2:46 PM CDT	Severe Thunderstorm Warning	SHV	44 min
Apr 13, 3:11 PM CDT	Severe Thunderstorm Warning	SHV	64 min
Apr 13, 3:13 PM CDT	Severe Thunderstorm Warning	SHV	50 min
Apr 16, 2:03 AM CDT	Lake Wind Advisory	SHV	13 hr
Apr 16, 2:40 PM CDT	Flash Flood Watch	SHV	49 hr
Apr 18, 12:54 AM CDT	Mesoscale Discussion	SPC	66 min
Apr 18, 1:09 AM CDT	Severe Thunderstorm Watch	SPC	7 hr
Apr 18, 1:58 AM CDT	Lake Wind Advisory	SHV	17 hr
Apr 18, 3:30 AM CDT	Severe Thunderstorm Warning	SHV	60 min
Apr 18, 3:51 AM CDT	Mesoscale Discussion	SPC	114 min
Apr 18, 4:23 AM CDT	Severe Thunderstorm Warning	SHV	67 min
Apr 18, 4:35 AM CDT	Special Weather Statement	SHV	40 min
Apr 19, 3:20 AM CDT	Lake Wind Advisory	SHV	16 hr
Apr 24, 10:50 PM CDT	Severe Thunderstorm Warning	SHV	40 min
Apr 24, 11:01 PM CDT	Tornado Warning	SHV	29 min
Apr 24, 11:26 PM CDT	Tornado Warning Considerable damage threat	SHV	34 min
Apr 25, 12:09 AM CDT	Areal Flood Advisory	SHV	3 hr
Apr 25, 12:17 AM CDT	Flash Flood Warning	SHV	3 hr
Apr 25, 12:37 AM CDT	Severe Thunderstorm Warning	SHV	38 min
Apr 25, 2:08 AM CDT	Mesoscale Discussion	SPC	67 min
Apr 30, 3:05 AM CDT	Lake Wind Advisory	SHV	19 hr
May 1, 4:36 AM CDT	Flash Flood Watch	SHV	3 days
May 1, 11:37 PM CDT	Mesoscale Discussion	SPC	113 min
May 2, 5:24 AM CDT	Severe Thunderstorm Warning	SHV	51 min
May 2, 5:41 AM CDT	Severe Thunderstorm Warning	SHV	64 min
May 2, 5:54 AM CDT	Flash Flood Warning	SHV	3 hr
May 2, 6:13 AM CDT	Severe Thunderstorm Warning	SHV	62 min
May 2, 8:45 AM CDT	River Flood Warning	SHV	15 days
May 2, 9:49 AM CDT	River Flood Warning	SHV	23 hr
May 2, 9:23 PM CDT	Severe Thunderstorm Warning	SHV	52 min
May 3, 9:00 PM CDT	River Flood Warning	SHV	26 days
May 7, 3:44 AM CDT	Flash Flood Watch	SHV	55 hr
May 8, 12:21 PM CDT	Mesoscale Discussion	SPC	84 min
May 8, 2:07 PM CDT	Mesoscale Discussion	SPC	53 min
May 8, 2:16 PM CDT	Tornado Watch	SPC	6 hr
May 8, 3:48 PM CDT	Mesoscale Discussion	SPC	117 min
May 8, 10:31 PM CDT	Mesoscale Discussion	SPC	89 min
May 8, 11:49 PM CDT	Areal Flood Advisory	SHV	3 hr
May 8, 11:59 PM CDT	Flash Flood Warning	SHV	5 hr
May 9, 3:28 AM CDT	Areal Flood Advisory	SHV	2 hr
May 9, 4:28 AM CDT	Flash Flood Watch	SHV	63 hr
May 11, 4:34 PM CDT	Flash Flood Warning	SHV	2 hr
May 18, 3:38 AM CDT	Lake Wind Advisory	SHV	19 hr
May 18, 10:28 AM CDT	River Flood Warning	SHV	9 days
May 18, 5:16 PM CDT	Mesoscale Discussion	SPC	119 min
May 18, 7:08 PM CDT	Tornado Watch	SPC	7 hr
May 18, 8:43 PM CDT	Severe Thunderstorm Warning	SHV	62 min
May 18, 9:32 PM CDT	Flash Flood Warning	SHV	3 hr
May 18, 9:39 PM CDT	Severe Thunderstorm Warning	SHV	66 min
May 18, 11:37 PM CDT	Severe Thunderstorm Warning	SHV	38 min
May 18, 11:53 PM CDT	Mesoscale Discussion	SPC	97 min
May 19, 12:15 AM CDT	Severe Thunderstorm Warning	SHV	60 min
May 19, 12:21 AM CDT	Flash Flood Warning	SHV	3 hr
May 19, 12:30 AM CDT	Flash Flood Warning	SHV	3 hr
May 19, 12:56 AM CDT	Areal Flood Warning	SHV	6 hr
May 19, 1:34 AM CDT	Flash Flood Warning	SHV	3 hr
May 19, 3:49 PM CDT	Mesoscale Discussion	SPC	86 min
May 20, 3:43 AM CDT	Lake Wind Advisory	SHV	39 hr
May 22, 2:48 AM CDT	Lake Wind Advisory	SHV	16 hr
Jun 2, 2:57 PM CDT	Special Weather Statement	SHV	48 min
Jun 2, 3:09 PM CDT	Areal Flood Advisory	SHV	3 hr
Jun 2, 3:33 PM CDT	Severe Thunderstorm Warning	SHV	42 min
Jun 16, 11:53 AM CDT	Mesoscale Discussion	SPC	2 hr
Jun 16, 12:02 PM CDT	Areal Flood Advisory	SHV	3 hr
Jun 16, 9:09 PM CDT	River Flood Warning	SHV	13 hr
Jun 19, 6:10 AM CDT	Mesoscale Discussion	SPC	95 min
Jun 19, 7:14 AM CDT	Special Weather Statement	SHV	46 min
Jun 19, 10:24 PM CDT	Mesoscale Discussion	SPC	36 min
Jun 19, 10:50 PM CDT	Severe Thunderstorm Watch	SPC	5 hr
Jun 20, 12:28 AM CDT	Severe Thunderstorm Warning	SHV	44 min
Jun 20, 1:31 AM CDT	Mesoscale Discussion	SPC	59 min
Jun 21, 3:01 AM CDT	Heat Advisory	SHV	16 hr
Jun 22, 2:58 AM CDT	Heat Advisory	SHV	16 hr
Jun 23, 1:50 PM CDT	Mesoscale Discussion	SPC	115 min
Jun 23, 5:25 PM CDT	Severe Thunderstorm Warning	SHV	50 min
Jun 23, 11:35 PM CDT	Special Weather Statement	SHV	55 min
Jun 24, 12:33 AM CDT	Special Weather Statement	SHV	57 min
Jun 26, 4:35 PM CDT	Special Weather Statement	SHV	40 min
Jun 27, 3:43 PM CDT	Special Weather Statement	SHV	47 min
Jul 7, 2:48 AM CDT	Heat Advisory	SHV	12 hr
Jul 8, 2:32 PM CDT	Heat Advisory	SHV	3 days
Jul 10, 8:44 PM CDT	Special Weather Statement	SHV	46 min
Jul 10, 9:33 PM CDT	Special Weather Statement	SHV	42 min
Jul 12, 4:37 PM CDT	Lake Wind Advisory	SHV	47 hr
Jul 17, 3:38 AM CDT	Heat Advisory	SHV	15 hr
Jul 22, 5:21 PM CDT	Special Weather Statement	SHV	54 min
Jul 31, 4:00 AM CDT	Dense Fog Advisory	SHV	5 hr
Aug 6, 3:56 PM CDT	Heat Advisory	SHV	7 days
Aug 13, 3:16 PM CDT	Heat Advisory	SHV	27 hr
Aug 17, 4:11 AM CDT	Heat Advisory	SHV	5 days
Aug 25, 3:16 PM CDT	Heat Advisory	SHV	28 hr
Aug 26, 3:37 PM CDT	Heat Advisory	SHV	20 hr
Aug 28, 5:43 AM CDT	Areal Flood Advisory	SHV	2 hr
Sep 6, 3:08 AM CDT	Heat Advisory	SHV	16 hr
Sep 7, 3:22 AM CDT	Heat Advisory	SHV	16 hr
Sep 9, 4:25 PM CDT	Special Weather Statement	SHV	35 min
Sep 9, 4:37 PM CDT	Severe Thunderstorm Warning	SHV	38 min
Sep 18, 9:06 AM CDT	River Flood Warning	SHV	25 hr
Oct 3, 3:55 PM CDT	Special Weather Statement	SHV	65 min
Oct 3, 4:42 PM CDT	Severe Thunderstorm Warning	SHV	48 min
Oct 10, 9:17 PM CDT	Lake Wind Advisory	SHV	18 hr
Oct 20, 5:43 PM CDT	Mesoscale Discussion	SPC	2 hr
Oct 21, 1:50 AM CDT	Tornado Watch	SPC	5 hr
Oct 21, 4:25 AM CDT	Special Weather Statement	SHV	65 min
Oct 21, 5:30 AM CDT	Special Weather Statement	SHV	60 min
Oct 30, 3:11 PM CDT	Lake Wind Advisory	SHV	19 hr
Oct 31, 3:15 AM CDT	Freeze Warning	SHV	30 hr
Nov 11, 3:33 AM CST	Lake Wind Advisory	SHV	29 hr
Nov 15, 3:24 AM CST	Freezing Fog Advisory	SHV	4 hr
Nov 25, 3:37 AM CST	Lake Wind Advisory	SHV	10 hr
Nov 30, 9:46 AM CST	Mesoscale Discussion	SPC	3 hr
Nov 30, 11:38 AM CST	Tornado Watch	SPC	7 hr
Dec 1, 2:47 AM CST	Lake Wind Advisory	SHV	15 hr
Dec 14, 12:40 AM CST	Dense Fog Advisory	SHV	8 hr
Dec 16, 9:43 AM CST	Mesoscale Discussion	SPC	3 hr
Dec 16, 10:40 AM CST	Tornado Watch	SPC	9 hr
Dec 16, 11:49 AM CST	Severe Thunderstorm Warning	SHV	56 min
Dec 26, 3:49 AM CST	Dense Fog Advisory	SHV	6 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	30
Tornado Warning	4
Severe Thunderstorm Watch	6
Tornado Watch	8
Mesoscale Discussion	35
Special Weather Statement	24
Flooding
Areal Flood Warning	1
Flash Flood Warning	9
River Flood Warning	12
Flash Flood Watch	6
Areal Flood Advisory	7
Winter
Winter Weather Advisory	1
Heat
Heat Advisory	12
Cold
Freeze Warning	3
Wind and dust
Lake Wind Advisory	28
Fog and smoke
Dense Fog Advisory	7
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.