Alert archive / Louisiana / Webster Parish

Weather alerts in Webster Parish, Louisiana, 2018

155 weather alerts in 2018, from the National Weather Service and the Storm Prediction Center. An alert counts here when it covered this county.

Webster Parish and its neighbors

Each county as a circle sized by its count in 2018. Tap one for its archive.

Alerts: 155
Warnings: 57
Watches: 16
Advisories: 43
Busiest month: April36 alerts
Busiest day: April 6, 201811 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 6 tornado warnings covering Webster Parish in 2018 had a tornado report inside them; 1 of 1 tornado reports fell inside a warning, on average 12 minutes after it went out.

Webster Parish, 2018

	Warnings	With a report	False alarm ratio	Reports	Inside a warning	Mean lead time
Tornado warnings	6	2	67%	1	100%	12 min
Severe thunderstorm warnings	17	12	29%	8	100%	20 min
Flash flood warnings	4	3	25%	0

Each office's whole area, 2018

	Warnings	With a report	False alarm ratio	Reports	Inside a warning	Mean lead time
NWS Shreveport, LA: tornado warnings	123	23	81%	57	75%	18 min
NWS Shreveport, LA: severe thunderstorm warnings	232	136	41%	400	69%	21 min
NWS Shreveport, LA: flash flood warnings	45	38	16%	125	78%	103 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, 4:31 AM CST	Hard Freeze Warning	SHV	29 hr
Jan 1, 4:38 AM CST	Wind Chill Advisory	SHV	29 hr
Jan 2, 4:29 AM CST	Hard Freeze Warning	SHV	30 hr
Jan 3, 3:19 AM CST	Hard Freeze Warning	SHV	31 hr
Jan 11, 4:42 AM CST	Lake Wind Advisory	SHV	30 hr
Jan 12, 12:58 AM CST	Winter Weather Advisory	SHV	6 hr
Jan 14, 2:06 PM CST	Winter Storm Watch	SHV	14 hr
Jan 15, 4:18 AM CST	Winter Storm Warning	SHV	32 hr
Jan 15, 10:07 PM CST	Wind Chill Advisory	SHV	14 hr
Jan 15, 10:13 PM CST	Lake Wind Advisory	SHV	11 hr
Jan 16, 4:27 AM CST	Hard Freeze Warning	SHV	30 hr
Jan 16, 4:59 AM CST	Wind Chill Advisory	SHV	29 hr
Jan 17, 4:10 AM CST	Hard Freeze Warning	SHV	29 hr
Jan 21, 4:10 AM CST	Lake Wind Advisory	SHV	20 hr
Jan 21, 9:35 PM CST	Mesoscale Discussion	SPC	115 min
Jan 21, 9:59 PM CST	Tornado Watch	SPC	6 hr
Jan 22, 1:16 AM CST	Mesoscale Discussion	SPC	119 min
Jan 22, 3:25 AM CST	Lake Wind Advisory	SHV	15 hr
Jan 30, 2:46 PM CST	Lake Wind Advisory	SHV	27 hr
Feb 1, 3:31 AM CST	Lake Wind Advisory	SHV	20 hr
Feb 4, 3:42 AM CST	Dense Fog Advisory	SHV	5 hr
Feb 7, 10:10 AM CST	River Flood Warning	SHV	33 days
Feb 15, 4:29 AM CST	Lake Wind Advisory	SHV	14 hr
Feb 19, 4:07 AM CST	Lake Wind Advisory	SHV	38 hr
Feb 19, 2:01 PM CST	Flash Flood Watch	SHV	5 days
Feb 20, 11:07 AM CST	River Flood Warning	SHV	19 days
Feb 21, 11:24 AM CST	Flash Flood Warning	SHV	3 hr
Feb 21, 11:31 AM CST	Flash Flood Warning	SHV	3 hr
Feb 21, 2:38 PM CST	Flash Flood Warning	SHV	16 hr
Feb 22, 10:10 AM CST	River Flood Warning	SHV	18 days
Feb 22, 5:40 PM CST	Areal Flood Advisory	SHV	65 min
Feb 23, 3:30 PM CST	Lake Wind Advisory	SHV	27 hr
Feb 23, 8:07 PM CST	River Flood Warning	SHV	77 days
Feb 24, 11:01 AM CST	Tornado Watch	SPC	8 hr
Feb 24, 4:43 PM CST	Severe Thunderstorm Warning	SHV	62 min
Feb 24, 5:48 PM CST	Special Weather Statement	SHV	27 min
Feb 26, 2:44 PM CST	Flash Flood Watch	SHV	69 hr
Feb 27, 4:37 PM CST	Areal Flood Advisory	SHV	3 hr
Mar 1, 2:46 AM CST	Severe Thunderstorm Warning	SHV	44 min
Mar 5, 11:31 AM CST	Mesoscale Discussion	SPC	2 hr
Mar 10, 10:08 PM CST	Mesoscale Discussion	SPC	2 hr
Mar 19, 4:30 AM CDT	Lake Wind Advisory	SHV	15 hr
Mar 20, 3:44 AM CDT	Lake Wind Advisory	SHV	11 hr
Mar 25, 8:28 PM CDT	River Flood Warning	SHV	14 days
Mar 26, 2:12 PM CDT	Flash Flood Watch	SHV	65 hr
Mar 27, 12:27 PM CDT	River Flood Warning	SHV	9 days
Mar 29, 10:56 AM CDT	River Flood Warning	SHV	7 days
Apr 2, 3:30 PM CDT	Lake Wind Advisory	SHV	28 hr
Apr 3, 10:26 AM CDT	Severe Thunderstorm Watch	SPC	8 hr
Apr 3, 3:48 PM CDT	Severe Thunderstorm Warning	SHV	57 min
Apr 3, 4:31 PM CDT	Severe Thunderstorm Warning	SHV	59 min
Apr 3, 4:33 PM CDT	Mesoscale Discussion	SPC	57 min
Apr 6, 9:59 AM CDT	River Flood Warning	SHV	48 hr
Apr 6, 9:59 AM CDT	River Flood Warning	SHV	5 days
Apr 6, 2:17 PM CDT	Mesoscale Discussion	SPC	58 min
Apr 6, 3:20 PM CDT	Tornado Watch	SPC	8 hr
Apr 6, 5:40 PM CDT	Severe Thunderstorm Warning	SHV	23 min
Apr 6, 5:54 PM CDT	Severe Thunderstorm Warning	SHV	51 min
Apr 6, 5:57 PM CDT	Severe Thunderstorm Warning	SHV	48 min
Apr 6, 5:58 PM CDT	Tornado Warning	SHV	10 min
Apr 6, 6:02 PM CDT	Mesoscale Discussion	SPC	58 min
Apr 6, 6:34 PM CDT	Tornado Warning	SHV	29 min
Apr 6, 6:42 PM CDT	Severe Thunderstorm Warning	SHV	48 min
Apr 6, 7:30 PM CDT	Severe Thunderstorm Warning	SHV	60 min
Apr 10, 7:08 AM CDT	River Flood Warning	SHV	5 days
Apr 12, 3:43 AM CDT	Lake Wind Advisory	SHV	42 hr
Apr 12, 11:49 PM CDT	Lake Wind Advisory	SHV	22 hr
Apr 13, 10:38 AM CDT	River Flood Warning	SHV	24 hr
Apr 13, 12:41 PM CDT	Mesoscale Discussion	SPC	2 hr
Apr 13, 1:50 PM CDT	Tornado Watch PDS	SPC	8 hr
Apr 13, 5:53 PM CDT	Mesoscale Discussion	SPC	97 min
Apr 13, 8:54 PM CDT	Mesoscale Discussion	SPC	66 min
Apr 13, 9:53 PM CDT	Tornado Watch	SPC	8 hr
Apr 14, 12:15 AM CDT	Severe Thunderstorm Warning	SHV	45 min
Apr 14, 12:43 AM CDT	Tornado Warning	SHV	32 min
Apr 14, 12:46 AM CDT	Tornado Warning	SHV	29 min
Apr 14, 12:59 AM CDT	Severe Thunderstorm Warning	SHV	46 min
Apr 14, 1:08 AM CDT	Tornado Warning	SHV	25 min
Apr 14, 4:24 AM CDT	Lake Wind Advisory	SHV	15 hr
Apr 15, 4:00 AM CDT	Lake Wind Advisory	SHV	15 hr
Apr 17, 3:23 AM CDT	Lake Wind Advisory	SHV	23 hr
Apr 21, 9:11 AM CDT	River Flood Warning	SHV	25 hr
Apr 21, 10:17 PM CDT	Special Weather Statement	SHV	43 min
May 22, 2:36 PM CDT	Special Weather Statement	SHV	39 min
May 23, 7:24 PM CDT	Severe Thunderstorm Warning	SHV	51 min
May 25, 5:46 PM CDT	Special Weather Statement	SHV	44 min
May 25, 5:58 PM CDT	Severe Thunderstorm Warning	SHV	51 min
May 25, 6:18 PM CDT	Special Weather Statement	SHV	42 min
Jun 11, 7:29 PM CDT	Special Weather Statement	SHV	31 min
Jun 19, 5:49 PM CDT	Special Weather Statement	SHV	41 min
Jun 20, 6:41 PM CDT	Mesoscale Discussion	SPC	64 min
Jun 22, 8:42 AM CDT	Mesoscale Discussion	SPC	93 min
Jun 22, 10:55 AM CDT	Severe Thunderstorm Watch	SPC	10 hr
Jun 22, 3:03 PM CDT	Mesoscale Discussion	SPC	87 min
Jun 28, 2:07 PM CDT	Heat Advisory	SHV	29 hr
Jul 3, 2:06 PM CDT	Special Weather Statement	SHV	39 min
Jul 12, 1:10 PM CDT	Severe Thunderstorm Warning	SHV	42 min
Jul 13, 3:34 AM CDT	Heat Advisory	SHV	15 hr
Jul 18, 3:12 PM CDT	Heat Advisory	SHV	44 hr
Jul 19, 3:07 PM CDT	Excessive Heat Warning	SHV	48 hr
Jul 21, 3:02 PM CDT	Heat Advisory	SHV	29 hr
Jul 29, 1:22 PM CDT	Mesoscale Discussion	SPC	83 min
Jul 29, 1:35 PM CDT	Severe Thunderstorm Warning	SHV	40 min
Aug 12, 12:35 PM CDT	Special Weather Statement	SHV	55 min
Aug 17, 5:50 PM CDT	Special Weather Statement	SHV	25 min
Aug 29, 5:30 PM CDT	Special Weather Statement	SHV	15 min
Sep 7, 9:51 AM CDT	Areal Flood Advisory	SHV	3 hr
Sep 7, 3:11 PM CDT	Special Weather Statement	SHV	49 min
Sep 8, 6:29 PM CDT	Special Weather Statement	SHV	46 min
Sep 21, 3:18 PM CDT	Flash Flood Watch	SHV	48 hr
Sep 22, 5:24 PM CDT	Areal Flood Advisory	SHV	111 min
Sep 26, 3:24 PM CDT	Special Weather Statement	SHV	51 min
Oct 9, 6:19 PM CDT	Special Weather Statement	SHV	56 min
Oct 29, 2:50 PM CDT	Lake Wind Advisory	SHV	28 hr
Oct 31, 3:02 PM CDT	Tornado Watch	SPC	9 hr
Oct 31, 6:14 PM CDT	Mesoscale Discussion	SPC	61 min
Oct 31, 8:36 PM CDT	Severe Thunderstorm Warning	SHV	54 min
Oct 31, 9:02 PM CDT	Special Weather Statement	SHV	43 min
Oct 31, 11:52 PM CDT	Mesoscale Discussion	SPC	53 min
Nov 5, 4:06 PM CST	Tornado Watch	SPC	7 hr
Nov 8, 4:40 AM CST	Special Weather Statement	SHV	35 min
Nov 8, 4:20 PM CST	Special Weather Statement	SHV	40 min
Nov 12, 3:42 AM CST	Lake Wind Advisory	SHV	20 hr
Nov 12, 6:52 AM CST	Areal Flood Warning	SHV	3 hr
Nov 12, 9:31 AM CST	Areal Flood Warning	SHV	3 hr
Nov 13, 3:01 AM CST	Freeze Warning	SHV	30 hr
Nov 24, 4:30 AM CST	Dense Fog Advisory	SHV	5 hr
Nov 24, 3:49 PM CST	Lake Wind Advisory	SHV	34 hr
Nov 30, 3:58 AM CST	Lake Wind Advisory	SHV	20 hr
Nov 30, 3:34 PM CST	Mesoscale Discussion	SPC	116 min
Nov 30, 6:17 PM CST	Mesoscale Discussion	SPC	58 min
Dec 1, 12:58 AM CST	Mesoscale Discussion	SPC	2 hr
Dec 1, 4:07 AM CST	Lake Wind Advisory	SHV	11 hr
Dec 6, 9:52 AM CST	River Flood Warning	SHV	41 days
Dec 6, 2:29 PM CST	Flash Flood Watch	SHV	46 hr
Dec 7, 10:54 AM CST	River Flood Warning	SHV	16 days
Dec 8, 11:24 AM CST	Areal Flood Warning	SHV	18 hr
Dec 8, 8:07 PM CST	Flash Flood Warning	SHV	2 hr
Dec 10, 3:23 AM CST	Freezing Fog Advisory	SHV	6 hr
Dec 12, 7:34 AM CST	River Flood Warning	SHV	107 days
Dec 14, 2:54 AM CST	Severe Thunderstorm Warning	SHV	51 min
Dec 14, 3:22 AM CST	Mesoscale Discussion	SPC	113 min
Dec 14, 10:29 AM CST	River Flood Warning	SHV	8 days
Dec 16, 9:36 PM CST	Dense Fog Advisory	SHV	14 hr
Dec 17, 9:56 PM CST	Dense Fog Advisory	SHV	12 hr
Dec 18, 10:08 AM CST	Dense Fog Advisory	SHV	112 min
Dec 18, 9:24 PM CST	Dense Fog Advisory	SHV	12 hr
Dec 20, 8:52 PM CST	Lake Wind Advisory	SHV	7 hr
Dec 22, 7:08 PM CST	River Flood Warning	SHV	23 hr
Dec 26, 4:24 AM CST	Lake Wind Advisory	SHV	30 hr
Dec 26, 10:39 AM CST	River Flood Warning	SHV	18 days
Dec 27, 12:02 AM CST	Severe Thunderstorm Watch	SPC	5 hr
Dec 27, 1:39 AM CST	Mesoscale Discussion	SPC	2 hr
Dec 27, 1:54 AM CST	Tornado Warning	SHV	25 min
Dec 27, 9:24 AM CST	River Flood Warning	SHV	18 days

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	17
Tornado Warning	6
Severe Thunderstorm Watch	3
Tornado Watch	7
Mesoscale Discussion	21
Special Weather Statement	18
Flooding
Areal Flood Warning	3
Flash Flood Warning	4
River Flood Warning	19
Flash Flood Watch	5
Areal Flood Advisory	4
Winter
Winter Storm Warning	1
Winter Storm Watch	1
Winter Weather Advisory	1
Heat
Excessive Heat Warning	1
Heat Advisory	4
Cold
Freeze Warning	1
Hard Freeze Warning	5
Wind Chill Advisory	3
Wind and dust
Lake Wind Advisory	24
Fog and smoke
Dense Fog Advisory	6
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 2017 2019

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.