Alert archive / Louisiana / Vernon Parish
Weather alerts in Vernon Parish, Louisiana, 2021
147 weather alerts in 2021, from the National Weather Service and the Storm Prediction Center. An alert counts here when it covered this county.
Vernon Parish and its neighbors
Each county as a circle sized by its count in 2021. Tap one for its archive.
- Alerts
- 147
- Warnings
- 44
- Watches
- 16
- Advisories
- 27
- Busiest month
- April28 alerts
- Busiest day
- April 24, 20217 alerts
Over time
By month
Warning verification
How often warnings here had a storm report inside them, and how much warning the reports had.
1 of 7 tornado warnings covering Vernon Parish in 2021 had a tornado report inside them; 1 of 1 tornado reports fell inside a warning, on average 18 minutes after it went out.
Vernon Parish, 2021
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| Tornado warnings | 7 | 1 | 86% | 1 | 100% | 18 min |
| Severe thunderstorm warnings | 14 | 4 | 71% | 1 | 100% | 47 min |
| Flash flood warnings | 5 | 3 | 40% | 3 | 100% | 73 min |
Each office's whole area, 2021
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| NWS Lake Charles, LA: tornado warnings | 72 | 14 | 81% | 24 | 75% | 13 min |
| NWS Lake Charles, LA: severe thunderstorm warnings | 127 | 20 | 84% | 71 | 54% | 26 min |
| NWS Lake Charles, LA: flash flood warnings | 67 | 21 | 69% | 65 | 86% | 135 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 10, 3:55 AM CST | Winter Weather Advisory | LCH | 28 hr |
| Jan 10, 3:11 PM CST | Winter Storm Warning | LCH | 17 hr |
| Jan 11, 2:25 PM CST | Hard Freeze Warning | LCH | 19 hr |
| Jan 15, 6:35 AM CST | Wind Advisory | LCH | 11 hr |
| Jan 22, 7:29 AM CST | River Flood Warning | LCH | 3 days |
| Jan 24, 9:02 AM CST | Dense Fog Advisory | LCH | 22 hr |
| Feb 13, 4:09 AM CST | Winter Storm Watch | LCH | 24 hr |
| Feb 14, 4:03 AM CST | Wind Chill Advisory | LCH | 56 hr |
| Feb 14, 4:03 AM CST | Winter Storm Warning | LCH | 35 hr |
| Feb 14, 4:07 AM CST | Hard Freeze Warning | LCH | 56 hr |
| Feb 14, 10:53 PM CST | Mesoscale Discussion | SPC | 4 hr |
| Feb 15, 2:38 PM CST | Wind Chill Warning | LCH | 21 hr |
| Feb 16, 4:52 AM CST | Winter Storm Watch | LCH | 11 hr |
| Feb 16, 9:43 AM CST | Hard Freeze Warning | LCH | 22 hr |
| Feb 16, 3:54 PM CST | Winter Storm Warning | LCH | 36 hr |
| Feb 17, 1:55 AM CST | Mesoscale Discussion | SPC | 6 hr |
| Feb 17, 4:00 AM CST | Winter Weather Advisory | LCH | 31 hr |
| Feb 17, 7:38 AM CST | Mesoscale Discussion | SPC | 4 hr |
| Feb 17, 10:53 AM CST | Mesoscale Discussion | SPC | 6 hr |
| Feb 18, 10:53 AM CST | Hard Freeze Warning | LCH | 23 hr |
| Feb 19, 3:27 AM CST | Hard Freeze Warning | LCH | 30 hr |
| Feb 20, 3:09 AM CST | Freezing Fog Advisory | LCH | 6 hr |
| Feb 24, 7:56 PM CST | Dense Fog Advisory | LCH | 14 hr |
| Mar 17, 11:35 AM CDT | Mesoscale Discussion | SPC | 85 min |
| Mar 17, 11:53 AM CDT | Tornado Watch | SPC | 6 hr |
| Mar 17, 1:46 PM CDT | Special Weather Statement | LCH | 29 min |
| Mar 31, 11:36 AM CDT | Special Weather Statement | LCH | 84 min |
| Apr 7, 2:22 PM CDT | Mesoscale Discussion | SPC | 53 min |
| Apr 7, 5:12 PM CDT | Mesoscale Discussion | SPC | 2 hr |
| Apr 7, 5:54 PM CDT | Severe Thunderstorm Warning | LCH | 51 min |
| Apr 7, 7:00 PM CDT | Mesoscale Discussion | SPC | 60 min |
| Apr 7, 7:07 PM CDT | Special Weather Statement | LCH | 38 min |
| Apr 7, 7:53 PM CDT | Severe Thunderstorm Warning | LCH | 16 min |
| Apr 7, 8:17 PM CDT | Special Weather Statement | LCH | 43 min |
| Apr 9, 10:47 PM CDT | Mesoscale Discussion | SPC | 118 min |
| Apr 10, 12:52 AM CDT | Special Weather Statement | LCH | 38 min |
| Apr 13, 7:26 AM CDT | Special Weather Statement | LCH | 49 min |
| Apr 13, 8:28 AM CDT | Mesoscale Discussion | SPC | 2 hr |
| Apr 13, 3:31 PM CDT | Flash Flood Watch | LCH | 4 days |
| Apr 14, 5:17 AM CDT | Mesoscale Discussion | SPC | 2 hr |
| Apr 14, 6:28 AM CDT | Severe Thunderstorm Warning | LCH | 47 min |
| Apr 23, 12:43 PM CDT | Mesoscale Discussion | SPC | 2 hr |
| Apr 23, 2:00 PM CDT | Tornado Watch | SPC | 7 hr |
| Apr 23, 2:35 PM CDT | River Flood Warning | LCH | 4 days |
| Apr 23, 2:50 PM CDT | Flash Flood Watch | LCH | 12 hr |
| Apr 23, 5:36 PM CDT | Mesoscale Discussion | SPC | 54 min |
| Apr 23, 7:15 PM CDT | Severe Thunderstorm Warning | LCH | 60 min |
| Apr 23, 7:35 PM CDT | Tornado Warning | LCH | 25 min |
| Apr 23, 8:00 PM CDT | Severe Thunderstorm Warning | LCH | 60 min |
| Apr 23, 8:26 PM CDT | Tornado Warning | LCH | 34 min |
| Apr 23, 8:30 PM CDT | Tornado Watch | SPC | 8 hr |
| Apr 23, 9:00 PM CDT | Severe Thunderstorm Warning | LCH | 14 min |
| Apr 23, 9:43 PM CDT | Severe Thunderstorm Warning | LCH | 13 min |
| Apr 24, 10:28 PM CDT | River Flood Warning | LCH | 37 hr |
| Apr 30, 10:24 AM CDT | River Flood Warning | LCH | 6 days |
| May 1, 10:29 AM CDT | River Flood Warning | LCH | 7 days |
| May 2, 1:47 PM CDT | Mesoscale Discussion | SPC | 88 min |
| May 4, 10:52 AM CDT | Tornado Watch | SPC | 7 hr |
| May 4, 11:52 AM CDT | Tornado Warning | LCH | 23 min |
| May 4, 12:11 PM CDT | Special Weather Statement | LCH | 34 min |
| May 9, 5:41 PM CDT | Mesoscale Discussion | SPC | 2 hr |
| May 9, 5:45 PM CDT | Severe Thunderstorm Watch | SPC | 7 hr |
| May 9, 7:22 PM CDT | Severe Thunderstorm Warning | LCH | 53 min |
| May 10, 3:08 AM CDT | Special Weather Statement | LCH | 37 min |
| May 10, 10:08 AM CDT | River Flood Warning | LCH | 5 days |
| May 10, 10:08 AM CDT | River Flood Warning | LCH | 38 days |
| May 11, 3:20 AM CDT | Flash Flood Watch | LCH | 34 hr |
| May 11, 6:29 AM CDT | Special Weather Statement | LCH | 31 min |
| May 11, 6:50 AM CDT | Special Weather Statement | LCH | 25 min |
| May 11, 6:55 AM CDT | Severe Thunderstorm Warning | LCH | 18 min |
| May 11, 5:22 PM CDT | Severe Thunderstorm Watch | SPC | 4 hr |
| May 11, 6:36 PM CDT | Mesoscale Discussion | SPC | 84 min |
| May 16, 2:03 PM CDT | Special Weather Statement | LCH | 27 min |
| May 17, 8:45 AM CDT | Tornado Warning | LCH | 30 min |
| May 17, 9:18 AM CDT | Mesoscale Discussion | SPC | 117 min |
| May 17, 9:34 AM CDT | Flash Flood Warning | LCH | 5 hr |
| May 17, 11:21 AM CDT | Flash Flood Watch | LCH | 5 days |
| May 17, 2:24 PM CDT | Flash Flood Warning | LCH | 3 hr |
| May 17, 8:33 PM CDT | River Flood Warning | LCH | 8 days |
| May 18, 10:39 PM CDT | Mesoscale Discussion | SPC | 96 min |
| May 20, 7:12 PM CDT | Flash Flood Warning | LCH | 3 hr |
| May 27, 7:07 AM CDT | Dense Fog Advisory | LCH | 113 min |
| May 28, 4:46 AM CDT | Special Weather Statement | LCH | 44 min |
| Jun 3, 1:27 PM CDT | Special Weather Statement | LCH | 48 min |
| Jun 6, 8:21 AM CDT | Special Weather Statement | LCH | 54 min |
| Jun 7, 12:32 PM CDT | Severe Thunderstorm Watch | SPC | 6 hr |
| Jun 7, 6:02 PM CDT | Special Weather Statement | LCH | 43 min |
| Jun 7, 6:46 PM CDT | Special Weather Statement | LCH | 44 min |
| Jun 13, 8:48 PM CDT | Severe Thunderstorm Warning | LCH | 29 min |
| Jun 21, 2:29 PM CDT | Special Weather Statement | LCH | 46 min |
| Jul 25, 2:20 PM CDT | Heat Advisory | LCH | 29 hr |
| Jul 27, 3:19 PM CDT | Special Weather Statement | LCH | 56 min |
| Jul 27, 4:20 PM CDT | Special Weather Statement | LCH | 25 min |
| Jul 28, 3:31 AM CDT | Heat Advisory | LCH | 15 hr |
| Jul 29, 3:22 AM CDT | Heat Advisory | LCH | 16 hr |
| Jul 29, 2:55 PM CDT | Heat Advisory | LCH | 28 hr |
| Jul 30, 4:04 PM CDT | Heat Advisory | LCH | 27 hr |
| Jul 31, 3:53 PM CDT | Heat Advisory | LCH | 27 hr |
| Aug 24, 5:33 PM CDT | Special Weather Statement | LCH | 57 min |
| Aug 26, 4:49 PM CDT | Severe Thunderstorm Warning | LCH | 41 min |
| Aug 26, 5:14 PM CDT | Special Weather Statement | LCH | 31 min |
| Aug 27, 10:04 AM CDT | Tropical Storm Watch | LCH | 6 hr |
| Aug 27, 4:19 PM CDT | Tropical Storm Warning | LCH | 61 hr |
| Sep 1, 5:43 AM CDT | Heat Advisory | LCH | 12 hr |
| Sep 1, 4:34 PM CDT | Special Weather Statement | LCH | 41 min |
| Sep 1, 4:56 PM CDT | Special Weather Statement | LCH | 49 min |
| Sep 1, 5:17 PM CDT | Special Weather Statement | LCH | 43 min |
| Sep 1, 5:45 PM CDT | Special Weather Statement | LCH | 45 min |
| Sep 2, 2:15 PM CDT | Special Weather Statement | LCH | 30 min |
| Sep 2, 2:35 PM CDT | Special Weather Statement | LCH | 25 min |
| Sep 2, 2:56 PM CDT | Special Weather Statement | LCH | 34 min |
| Sep 12, 10:38 AM CDT | Flash Flood Watch | LCH | 4 days |
| Sep 21, 7:58 PM CDT | Special Weather Statement | LCH | 62 min |
| Sep 28, 6:29 AM CDT | Special Weather Statement | LCH | 61 min |
| Sep 28, 6:39 AM CDT | Flash Flood Warning | LCH | 3 hr |
| Sep 28, 8:41 AM CDT | Flash Flood Warning | LCH | 5 hr |
| Oct 3, 6:50 AM CDT | Dense Fog Advisory | LCH | 2 hr |
| Oct 15, 5:05 PM CDT | Special Weather Statement | LCH | 25 min |
| Oct 21, 1:56 AM CDT | Dense Fog Advisory | LCH | 8 hr |
| Oct 27, 7:55 AM CDT | Tornado Watch | SPC | 9 hr |
| Oct 27, 10:59 AM CDT | Mesoscale Discussion | SPC | 91 min |
| Oct 27, 12:31 PM CDT | Tornado Warning | LCH | 17 min |
| Oct 27, 12:56 PM CDT | Severe Thunderstorm Warning | LCH | 34 min |
| Oct 27, 9:49 PM CDT | Wind Advisory | LCH | 21 hr |
| Nov 7, 5:20 AM CST | Dense Fog Advisory | LCH | 4 hr |
| Nov 9, 4:28 AM CST | Dense Fog Advisory | LCH | 4 hr |
| Nov 11, 3:33 AM CST | Special Weather Statement | LCH | 57 min |
| Nov 11, 4:40 AM CST | Special Weather Statement | LCH | 65 min |
| Nov 18, 3:42 AM CST | Dense Fog Advisory | LCH | 5 hr |
| Nov 21, 1:31 AM CST | Dense Fog Advisory | LCH | 7 hr |
| Nov 29, 1:06 AM CST | Dense Fog Advisory | LCH | 7 hr |
| Dec 1, 8:05 PM CST | Dense Fog Advisory | LCH | 14 hr |
| Dec 2, 8:00 PM CST | Dense Fog Advisory | LCH | 14 hr |
| Dec 3, 8:20 PM CST | Dense Fog Advisory | LCH | 13 hr |
| Dec 4, 3:06 PM CST | Dense Fog Advisory | LCH | 18 hr |
| Dec 6, 6:11 AM CST | Special Weather Statement | SHV | 34 min |
| Dec 6, 6:24 AM CST | Special Weather Statement | LCH | 36 min |
| Dec 6, 6:37 AM CST | Tornado Warning | LCH | 23 min |
| Dec 6, 7:01 AM CST | Special Weather Statement | LCH | 29 min |
| Dec 6, 7:10 AM CST | Tornado Warning | LCH | 35 min |
| Dec 6, 7:17 AM CST | Mesoscale Discussion | SPC | 118 min |
| Dec 11, 1:36 AM CST | Mesoscale Discussion | SPC | 114 min |
| Dec 11, 4:02 AM CST | Mesoscale Discussion | SPC | 118 min |
| Dec 11, 4:32 AM CST | Special Weather Statement | LCH | 58 min |
| Dec 18, 12:50 PM CST | Mesoscale Discussion | SPC | 115 min |
| Dec 18, 12:52 PM CST | Severe Thunderstorm Warning | LCH | 38 min |
| Dec 18, 1:30 PM CST | Severe Thunderstorm Warning | LCH | 49 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 | 14 |
| Tornado Warning | 7 |
| Severe Thunderstorm Watch | 3 |
| Tornado Watch | 5 |
| Mesoscale Discussion | 23 |
| Special Weather Statement | 37 |
| Flooding | |
| Flash Flood Warning | 5 |
| River Flood Warning | 8 |
| Flash Flood Watch | 5 |
| Winter | |
| Winter Storm Warning | 3 |
| Winter Storm Watch | 2 |
| Winter Weather Advisory | 2 |
| Heat | |
| Heat Advisory | 7 |
| Cold | |
| Hard Freeze Warning | 5 |
| Wind Chill Warning | 1 |
| Wind Chill Advisory | 1 |
| Wind and dust | |
| Wind Advisory | 2 |
| Fog and smoke | |
| Dense Fog Advisory | 14 |
| Freezing Fog Advisory | 1 |
| Tropical | |
| Tropical Storm Warning | 1 |
| Tropical Storm Watch | 1 |
The busiest days
Days with the most alerts issued, by UTC date.
Nearby
Alerts in force nowTornadoes on recordForecastThe radar archive20202022
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.