Weather alerts in Shelby County, Texas, 2015

145 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: 145
Warnings: 49
Watches: 28
Advisories: 29
Busiest month: April34 alerts
Busiest day: April 19, 201511 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 2015 had a tornado report inside them.

Shelby County, 2015

	Warnings	With a report	False alarm ratio	Reports	Inside a warning	Mean lead time
Tornado warnings	2	0	100%	0
Severe thunderstorm warnings	16	13	19%	5	100%	35 min
Flash flood warnings	9	7	22%	5	60%	107 min

Each office's whole area, 2015

	Warnings	With a report	False alarm ratio	Reports	Inside a warning	Mean lead time
NWS Shreveport, LA: tornado warnings	103	20	81%	42	55%	11 min
NWS Shreveport, LA: severe thunderstorm warnings	270	164	39%	438	72%	24 min
NWS Shreveport, LA: flash flood warnings	115	80	30%	274	89%	96 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, 3:42 PM CST	Flash Flood Watch	SHV	24 hr
Jan 3, 7:21 AM CST	River Flood Warning	SHV	6 days
Jan 6, 8:35 PM CST	Lake Wind Advisory	SHV	21 hr
Jan 7, 5:16 AM CST	Hard Freeze Warning	SHV	28 hr
Jan 9, 7:25 PM CST	River Flood Warning	SHV	37 hr
Jan 11, 12:20 PM CST	River Flood Warning	SHV	5 days
Jan 20, 7:28 AM CST	Dense Fog Advisory	SHV	3 hr
Jan 22, 9:59 PM CST	River Flood Warning	SHV	9 days
Feb 1, 11:16 AM CST	Lake Wind Advisory	SHV	17 hr
Feb 20, 4:40 AM CST	Lake Wind Advisory	SHV	28 hr
Feb 21, 3:27 PM CST	Mesoscale Discussion	SPC	2 hr
Feb 21, 4:02 PM CST	Winter Storm Watch	SHV	13 hr
Feb 22, 4:42 AM CST	Winter Weather Advisory	SHV	23 hr
Feb 23, 3:55 AM CST	Winter Weather Advisory	SHV	20 hr
Feb 24, 4:36 AM CST	Winter Weather Advisory	SHV	36 hr
Mar 2, 9:48 PM CST	Dense Fog Advisory	SHV	12 hr
Mar 4, 3:28 AM CST	Winter Weather Advisory	SHV	33 hr
Mar 4, 3:35 AM CST	Lake Wind Advisory	SHV	36 hr
Mar 8, 2:53 PM CDT	Flash Flood Watch	SHV	31 hr
Mar 9, 1:29 PM CDT	River Flood Warning	SHV	21 days
Mar 12, 9:58 AM CDT	Flash Flood Watch	SHV	31 hr
Mar 13, 8:42 AM CDT	River Flood Warning	SHV	7 days
Mar 16, 4:20 AM CDT	Dense Fog Advisory	SHV	6 hr
Mar 19, 3:45 PM CDT	Flash Flood Watch	SHV	56 hr
Mar 21, 8:37 AM CDT	River Flood Warning	SHV	8 days
Apr 2, 3:50 AM CDT	Lake Wind Advisory	SHV	15 hr
Apr 3, 5:29 AM CDT	Lake Wind Advisory	SHV	9 hr
Apr 3, 5:54 PM CDT	Mesoscale Discussion	SPC	2 hr
Apr 5, 8:50 PM CDT	River Flood Warning	SHV	38 hr
Apr 9, 3:06 PM CDT	Tornado Watch	SPC	7 hr
Apr 9, 9:23 PM CDT	Mesoscale Discussion	SPC	67 min
Apr 14, 3:19 PM CDT	Mesoscale Discussion	SPC	56 min
Apr 15, 8:45 AM CDT	River Flood Warning	SHV	13 days
Apr 16, 4:59 PM CDT	Mesoscale Discussion	SPC	91 min
Apr 16, 8:31 PM CDT	Areal Flood Advisory	SHV	3 hr
Apr 19, 1:52 PM CDT	Mesoscale Discussion	SPC	53 min
Apr 19, 2:31 PM CDT	Severe Thunderstorm Watch	SPC	7 hr
Apr 19, 4:45 PM CDT	Mesoscale Discussion	SPC	2 hr
Apr 19, 5:17 PM CDT	Severe Thunderstorm Warning	SHV	28 min
Apr 19, 5:39 PM CDT	Severe Thunderstorm Warning	SHV	36 min
Apr 19, 5:45 PM CDT	Tornado Warning	SHV	60 min
Apr 19, 5:46 PM CDT	Tornado Watch	SPC	6 hr
Apr 19, 5:47 PM CDT	Severe Thunderstorm Warning	SHV	28 min
Apr 19, 6:13 PM CDT	Severe Thunderstorm Warning	SHV	62 min
Apr 19, 6:29 PM CDT	Severe Thunderstorm Warning	SHV	31 min
Apr 19, 6:56 PM CDT	Severe Thunderstorm Warning	SHV	34 min
Apr 19, 7:02 PM CDT	Severe Thunderstorm Warning	SHV	40 min
Apr 24, 3:58 PM CDT	Mesoscale Discussion	SPC	92 min
Apr 24, 4:45 PM CDT	Tornado Watch	SPC	5 hr
Apr 24, 7:46 PM CDT	Mesoscale Discussion	SPC	89 min
Apr 24, 9:57 PM CDT	Severe Thunderstorm Warning	SHV	48 min
Apr 24, 9:59 PM CDT	Tornado Watch	SPC	4 hr
Apr 24, 10:32 PM CDT	Severe Thunderstorm Warning	SHV	43 min
Apr 24, 11:02 PM CDT	Severe Thunderstorm Warning	SHV	58 min
Apr 25, 4:31 AM CDT	Lake Wind Advisory	SHV	11 hr
Apr 27, 12:49 AM CDT	Mesoscale Discussion	SPC	86 min
Apr 27, 1:27 AM CDT	Tornado Watch	SPC	6 hr
Apr 27, 4:56 AM CDT	Mesoscale Discussion	SPC	2 hr
Apr 27, 5:18 AM CDT	Severe Thunderstorm Warning	SHV	42 min
May 11, 2:55 AM CDT	Mesoscale Discussion	SPC	95 min
May 11, 3:31 AM CDT	Severe Thunderstorm Warning	SHV	59 min
May 13, 12:53 PM CDT	River Flood Warning	SHV	9 days
May 13, 3:37 PM CDT	Flash Flood Watch	SHV	6 hr
May 16, 1:35 PM CDT	Special Weather Statement	SHV	40 min
May 17, 2:46 PM CDT	River Flood Warning	SHV	21 days
May 17, 4:22 PM CDT	Flash Flood Watch	SHV	24 hr
May 18, 9:16 AM CDT	Flash Flood Warning	SHV	4 hr
May 18, 10:28 AM CDT	Flash Flood Warning	SHV	4 hr
May 18, 1:14 PM CDT	Flash Flood Warning	SHV	2 hr
May 18, 1:34 PM CDT	River Flood Warning	SHV	11 days
May 21, 8:39 AM CDT	Areal Flood Advisory	SHV	3 hr
May 23, 4:49 AM CDT	Flash Flood Watch	SHV	71 hr
May 25, 2:52 PM CDT	Tornado Watch	SPC	8 hr
May 25, 5:15 PM CDT	Mesoscale Discussion	SPC	90 min
May 25, 6:36 PM CDT	Severe Thunderstorm Warning	SHV	54 min
May 25, 7:26 PM CDT	Flash Flood Warning	SHV	4 hr
May 25, 7:27 PM CDT	Severe Thunderstorm Warning	SHV	63 min
May 25, 8:05 PM CDT	Mesoscale Discussion	SPC	85 min
May 25, 8:30 PM CDT	Severe Thunderstorm Warning	SHV	60 min
May 27, 3:19 AM CDT	Special Weather Statement	SHV	56 min
May 27, 3:31 AM CDT	Special Weather Statement	SHV	44 min
May 29, 12:33 PM CDT	Mesoscale Discussion	SPC	87 min
May 30, 10:14 AM CDT	Mesoscale Discussion	SPC	91 min
May 30, 9:14 PM CDT	Special Weather Statement	SHV	46 min
May 30, 10:56 PM CDT	Areal Flood Advisory	SHV	2 hr
May 31, 8:34 AM CDT	River Flood Warning	SHV	10 days
Jun 12, 3:56 PM CDT	Special Weather Statement	SHV	49 min
Jun 15, 4:58 PM CDT	Flash Flood Watch	SHV	54 hr
Jun 16, 1:01 PM CDT	Tornado Watch	SPC	11 hr
Jun 16, 3:06 PM CDT	Mesoscale Discussion	SPC	114 min
Jun 16, 6:38 PM CDT	Mesoscale Discussion	SPC	97 min
Jun 17, 9:34 PM CDT	Flash Flood Watch	SHV	21 hr
Jun 18, 2:00 AM CDT	Flash Flood Warning	SHV	3 hr
Jun 18, 4:13 AM CDT	River Flood Warning	SHV	9 days
Jun 18, 5:06 AM CDT	Flash Flood Warning	SHV	3 hr
Jun 18, 5:31 AM CDT	Mesoscale Discussion	SPC	89 min
Jun 18, 6:28 AM CDT	Flash Flood Warning	SHV	6 hr
Jun 18, 3:56 PM CDT	Special Weather Statement	SHV	49 min
Jun 20, 6:45 PM CDT	Special Weather Statement	SHV	60 min
Jul 24, 4:01 PM CDT	Heat Advisory	SHV	6 days
Jul 29, 4:15 AM CDT	Heat Advisory	SHV	39 hr
Aug 5, 3:50 PM CDT	Heat Advisory	SHV	6 days
Aug 19, 2:45 PM CDT	Mesoscale Discussion	SPC	3 hr
Aug 22, 2:54 PM CDT	Special Weather Statement	SHV	51 min
Aug 24, 6:29 PM CDT	Severe Thunderstorm Warning	SHV	46 min
Sep 11, 9:19 PM CDT	Special Weather Statement	SHV	41 min
Oct 15, 3:28 PM CDT	Fire Weather Watch	SHV	3 days
Oct 25, 5:16 AM CDT	Lake Wind Advisory	SHV	29 hr
Oct 30, 3:00 PM CDT	Flash Flood Watch	SHV	25 hr
Nov 11, 6:41 PM CST	Mesoscale Discussion	SPC	2 hr
Nov 16, 3:35 AM CST	Flash Flood Watch	SHV	42 hr
Nov 16, 3:25 PM CST	Lake Wind Advisory	SHV	27 hr
Nov 17, 4:48 AM CST	Tornado Watch	SPC	4 hr
Nov 17, 8:24 AM CST	Mesoscale Discussion	SPC	66 min
Nov 17, 8:55 AM CST	Tornado Watch	SPC	7 hr
Nov 17, 10:39 AM CST	Areal Flood Warning	SHV	2 hr
Nov 17, 1:53 PM CST	Flash Flood Warning	SHV	3 hr
Nov 17, 3:54 PM CST	River Flood Warning	SHV	9 days
Nov 20, 2:55 PM CST	Lake Wind Advisory	SHV	25 hr
Nov 22, 5:43 AM CST	Freeze Warning	SHV	27 hr
Dec 10, 6:25 AM CST	Dense Fog Advisory	SHV	3 hr
Dec 11, 3:49 PM CST	Flash Flood Watch	SHV	44 hr
Dec 12, 4:27 AM CST	Lake Wind Advisory	SHV	36 hr
Dec 13, 10:19 AM CST	River Flood Warning	SHV	4 days
Dec 14, 1:50 AM CST	River Flood Warning	SHV	35 days
Dec 18, 10:41 AM CST	River Flood Warning	SHV	71 hr
Dec 22, 1:09 AM CST	Dense Fog Advisory	SHV	9 hr
Dec 22, 10:17 PM CST	Mesoscale Discussion	SPC	2 hr
Dec 23, 12:06 AM CST	Tornado Watch	SPC	7 hr
Dec 23, 4:39 AM CST	Mesoscale Discussion	SPC	2 hr
Dec 23, 6:20 AM CST	Tornado Watch	SPC	7 hr
Dec 23, 10:12 AM CST	Mesoscale Discussion	SPC	93 min
Dec 25, 1:48 AM CST	Mesoscale Discussion	SPC	2 hr
Dec 25, 5:30 PM CST	River Flood Warning	SHV	11 days
Dec 26, 10:43 AM CST	Lake Wind Advisory	SHV	7 hr
Dec 27, 5:42 AM CST	Lake Wind Advisory	SHV	18 hr
Dec 27, 8:56 AM CST	Tornado Watch	SPC	10 hr
Dec 27, 10:34 AM CST	Tornado Warning	SHV	26 min
Dec 27, 12:45 PM CST	Mesoscale Discussion	SPC	2 hr
Dec 27, 2:27 PM CST	Mesoscale Discussion	SPC	63 min
Dec 27, 2:47 PM CST	Tornado Watch	SPC	7 hr
Dec 27, 4:55 PM CST	Mesoscale Discussion	SPC	2 hr
Dec 27, 6:43 PM CST	Flash Flood Warning	SHV	6 hr
Dec 27, 7:11 PM CST	Mesoscale Discussion	SPC	94 min
Dec 28, 12:19 AM CST	Lake Wind Advisory	SHV	15 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	16
Tornado Warning	2
Severe Thunderstorm Watch	1
Tornado Watch	13
Mesoscale Discussion	30
Special Weather Statement	9
Flooding
Areal Flood Warning	1
Flash Flood Warning	9
River Flood Warning	19
Flash Flood Watch	12
Areal Flood Advisory	3
Winter
Winter Storm Watch	1
Winter Weather Advisory	4
Heat
Heat Advisory	3
Cold
Freeze Warning	1
Hard Freeze Warning	1
Wind and dust
Lake Wind Advisory	14
Fire
Fire Weather Watch	1
Fog and smoke
Dense Fog Advisory	5

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.