Alert archive / Louisiana / Jackson Parish
Weather alerts in Jackson Parish, Louisiana, 2017
115 weather alerts in 2017, from the National Weather Service and the Storm Prediction Center. An alert counts here when it covered this county.
Jackson Parish and its neighbors
Each county as a circle sized by its count in 2017. Tap one for its archive.
- Alerts
- 115
- Warnings
- 23
- Watches
- 15
- Advisories
- 39
- Busiest month
- April25 alerts
- Busiest day
- April 2, 20178 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 4 tornado warnings covering Jackson Parish in 2017 had a tornado report inside them; 0 of 6 tornado reports fell inside a warning.
Jackson Parish, 2017
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| Tornado warnings | 4 | 0 | 100% | 6 | 0% | |
| Severe thunderstorm warnings | 11 | 10 | 9% | 10 | 50% | 30 min |
| Flash flood warnings | 4 | 1 | 75% | 0 |
Each office's whole area, 2017
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| NWS Shreveport, LA: tornado warnings | 91 | 27 | 70% | 65 | 49% | 21 min |
| NWS Shreveport, LA: severe thunderstorm warnings | 254 | 143 | 44% | 473 | 65% | 24 min |
| NWS Shreveport, LA: flash flood warnings | 45 | 30 | 33% | 129 | 84% | 248 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, 3:20 PM CST | Dense Fog Advisory | SHV | 18 hr |
| Jan 2, 2:06 AM CST | Mesoscale Discussion | SPC | 114 min |
| Jan 2, 5:35 AM CST | Mesoscale Discussion | SPC | 85 min |
| Jan 2, 6:12 AM CST | Tornado Watch | SPC | 10 hr |
| Jan 2, 7:48 AM CST | Mesoscale Discussion | SPC | 57 min |
| Jan 2, 11:09 AM CST | Mesoscale Discussion | SPC | 96 min |
| Jan 2, 11:33 AM CST | Severe Thunderstorm Warning | SHV | 42 min |
| Jan 5, 3:21 PM CST | Winter Weather Advisory | SHV | 30 hr |
| Jan 6, 4:50 AM CST | Hard Freeze Warning | SHV | 28 hr |
| Jan 7, 4:14 AM CST | Hard Freeze Warning | SHV | 29 hr |
| Jan 9, 3:49 PM CST | Lake Wind Advisory | SHV | 26 hr |
| Jan 11, 3:34 AM CST | Lake Wind Advisory | SHV | 14 hr |
| Jan 16, 2:02 PM CST | Mesoscale Discussion | SPC | 118 min |
| Jan 21, 2:33 PM CST | Mesoscale Discussion | SPC | 2 hr |
| Jan 21, 2:51 PM CST | Lake Wind Advisory | SHV | 34 hr |
| Jan 21, 3:41 PM CST | Tornado Watch | SPC | 7 hr |
| Jan 21, 5:32 PM CST | Mesoscale Discussion | SPC | 118 min |
| Jan 21, 8:22 PM CST | Mesoscale Discussion | SPC | 113 min |
| Feb 11, 10:36 AM CST | Lake Wind Advisory | SHV | 7 hr |
| Feb 20, 2:37 PM CST | Mesoscale Discussion | SPC | 113 min |
| Feb 28, 4:36 AM CST | Lake Wind Advisory | SHV | 13 hr |
| Feb 28, 9:51 PM CST | Lake Wind Advisory | SHV | 20 hr |
| Mar 6, 10:16 AM CST | Lake Wind Advisory | SHV | 8 hr |
| Mar 7, 3:37 AM CST | Severe Thunderstorm Watch | SPC | 8 hr |
| Mar 7, 8:03 AM CST | Mesoscale Discussion | SPC | 117 min |
| Mar 7, 11:02 AM CST | Mesoscale Discussion | SPC | 58 min |
| Mar 23, 8:07 PM CDT | Lake Wind Advisory | SHV | 29 hr |
| Mar 24, 9:14 PM CDT | Severe Thunderstorm Watch | SPC | 6 hr |
| Mar 24, 11:00 PM CDT | Severe Thunderstorm Warning | SHV | 60 min |
| Mar 25, 12:00 AM CDT | Severe Thunderstorm Warning | SHV | 60 min |
| Mar 25, 12:03 AM CDT | Tornado Warning | SHV | 27 min |
| Mar 28, 3:49 PM CDT | Lake Wind Advisory | SHV | 27 hr |
| Mar 29, 5:50 PM CDT | Mesoscale Discussion | SPC | 115 min |
| Mar 29, 7:04 PM CDT | Special Weather Statement | SHV | 41 min |
| Mar 29, 7:26 PM CDT | Tornado Watch | SPC | 8 hr |
| Apr 2, 4:30 AM CDT | Flash Flood Watch | SHV | 23 hr |
| Apr 2, 10:39 AM CDT | Tornado Watch | SPC | 5 hr |
| Apr 2, 1:34 PM CDT | Tornado Watch | SPC | 7 hr |
| Apr 2, 3:13 PM CDT | Mesoscale Discussion | SPC | 92 min |
| Apr 2, 3:20 PM CDT | Severe Thunderstorm Warning | SHV | 55 min |
| Apr 2, 3:36 PM CDT | Severe Thunderstorm Warning | SHV | 39 min |
| Apr 2, 4:12 PM CDT | Severe Thunderstorm Warning | SHV | 78 min |
| Apr 2, 4:14 PM CDT | Severe Thunderstorm Warning | SHV | 29 min |
| Apr 4, 10:00 PM CDT | Lake Wind Advisory | SHV | 21 hr |
| Apr 21, 9:52 PM CDT | Lake Wind Advisory | SHV | 17 hr |
| Apr 22, 4:16 AM CDT | Mesoscale Discussion | SPC | 89 min |
| Apr 26, 12:27 AM CDT | Lake Wind Advisory | SHV | 21 hr |
| Apr 26, 4:23 PM CDT | Mesoscale Discussion | SPC | 67 min |
| Apr 26, 4:44 PM CDT | Tornado Watch | SPC | 5 hr |
| Apr 28, 5:02 AM CDT | Lake Wind Advisory | SHV | 47 hr |
| Apr 29, 2:45 PM CDT | Mesoscale Discussion | SPC | 60 min |
| Apr 29, 3:02 PM CDT | Tornado Warning | SHV | 30 min |
| Apr 29, 3:05 PM CDT | Severe Thunderstorm Warning | SHV | 55 min |
| Apr 29, 3:10 PM CDT | Tornado Warning | SHV | 50 min |
| Apr 29, 10:23 PM CDT | Severe Thunderstorm Watch | SPC | 8 hr |
| Apr 30, 2:16 AM CDT | Special Weather Statement | SHV | 29 min |
| Apr 30, 3:09 AM CDT | Tornado Warning | SHV | 51 min |
| Apr 30, 3:36 AM CDT | Mesoscale Discussion | SPC | 84 min |
| Apr 30, 3:53 AM CDT | Severe Thunderstorm Warning | SHV | 52 min |
| Apr 30, 4:13 AM CDT | Areal Flood Advisory | SHV | 3 hr |
| May 3, 3:54 AM CDT | Lake Wind Advisory | SHV | 39 hr |
| May 3, 10:34 AM CDT | Special Weather Statement | SHV | 41 min |
| May 3, 6:11 PM CDT | Special Weather Statement | SHV | 49 min |
| May 11, 2:43 PM CDT | Severe Thunderstorm Watch | SPC | 9 hr |
| May 16, 9:39 PM CDT | Lake Wind Advisory | SHV | 21 hr |
| May 21, 12:01 PM CDT | Special Weather Statement | SHV | 44 min |
| May 21, 12:43 PM CDT | Special Weather Statement | SHV | 47 min |
| May 24, 2:07 AM CDT | Lake Wind Advisory | SHV | 14 hr |
| May 26, 3:29 AM CDT | Lake Wind Advisory | SHV | 16 hr |
| May 28, 8:08 AM CDT | Special Weather Statement | SHV | 37 min |
| May 28, 5:01 PM CDT | Mesoscale Discussion | SPC | 59 min |
| May 28, 5:19 PM CDT | Severe Thunderstorm Watch | SPC | 4 hr |
| May 28, 7:34 PM CDT | Mesoscale Discussion | SPC | 56 min |
| May 28, 7:43 PM CDT | Severe Thunderstorm Warning | SHV | 62 min |
| May 28, 8:00 PM CDT | Flash Flood Warning | SHV | 3 hr |
| May 28, 8:39 PM CDT | Severe Thunderstorm Warning | SHV | 66 min |
| Jun 6, 2:06 PM CDT | Areal Flood Advisory | SHV | 3 hr |
| Jun 11, 6:11 PM CDT | Special Weather Statement | SHV | 49 min |
| Jun 12, 8:10 PM CDT | Areal Flood Advisory | SHV | 3 hr |
| Jun 20, 1:45 PM CDT | Flash Flood Watch | SHV | 64 hr |
| Jun 21, 6:19 AM CDT | Lake Wind Advisory | SHV | 9 hr |
| Jun 21, 3:58 PM CDT | Lake Wind Advisory | SHV | 30 hr |
| Jul 1, 4:03 AM CDT | Special Weather Statement | SHV | 57 min |
| Jul 1, 11:33 AM CDT | Mesoscale Discussion | SPC | 117 min |
| Jul 19, 2:40 AM CDT | Heat Advisory | SHV | 4 days |
| Jul 22, 4:30 AM CDT | Heat Advisory | SHV | 15 hr |
| Jul 25, 3:25 PM CDT | Heat Advisory | SHV | 52 hr |
| Jul 28, 3:49 AM CDT | Heat Advisory | SHV | 15 hr |
| Aug 8, 1:44 AM CDT | Areal Flood Advisory | SHV | 3 hr |
| Aug 10, 3:04 AM CDT | Flash Flood Warning | SHV | 3 hr |
| Aug 10, 3:28 AM CDT | Flash Flood Watch | SHV | 7 hr |
| Aug 10, 5:59 AM CDT | Flash Flood Warning | SHV | 3 hr |
| Aug 10, 7:15 AM CDT | Areal Flood Advisory | SHV | 2 hr |
| Aug 11, 2:38 PM CDT | Special Weather Statement | SHV | 37 min |
| Aug 16, 3:35 PM CDT | Heat Advisory | SHV | 23 hr |
| Aug 19, 2:42 AM CDT | Heat Advisory | SHV | 40 hr |
| Aug 23, 6:51 PM CDT | Special Weather Statement | SHV | 54 min |
| Aug 27, 4:00 AM CDT | Flash Flood Watch | SHV | 4 days |
| Aug 29, 10:06 PM CDT | Lake Wind Advisory | SHV | 27 hr |
| Aug 30, 2:25 PM CDT | Flash Flood Warning | SHV | 6 hr |
| Sep 5, 3:10 PM CDT | Mesoscale Discussion | SPC | 65 min |
| Sep 5, 6:21 PM CDT | Special Weather Statement | SHV | 39 min |
| Sep 5, 6:55 PM CDT | Special Weather Statement | SHV | 65 min |
| Oct 22, 4:57 AM CDT | Mesoscale Discussion | SPC | 93 min |
| Oct 22, 5:29 AM CDT | Special Weather Statement | SHV | 61 min |
| Oct 23, 2:29 PM CDT | Lake Wind Advisory | SHV | 29 hr |
| Oct 26, 9:23 PM CDT | Lake Wind Advisory | SHV | 18 hr |
| Oct 28, 3:45 AM CDT | Freeze Warning | SHV | 29 hr |
| Nov 17, 3:23 AM CST | Lake Wind Advisory | SHV | 42 hr |
| Dec 7, 3:03 AM CST | Freeze Warning | SHV | 30 hr |
| Dec 17, 1:29 AM CST | Special Weather Statement | SHV | 61 min |
| Dec 17, 9:53 PM CST | Dense Fog Advisory | SHV | 12 hr |
| Dec 19, 3:28 AM CST | Dense Fog Advisory | SHV | 6 hr |
| Dec 20, 1:12 AM CST | Special Weather Statement | SHV | 48 min |
| Dec 21, 4:01 AM CST | Dense Fog Advisory | SHV | 5 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 | 11 |
| Tornado Warning | 4 |
| Severe Thunderstorm Watch | 5 |
| Tornado Watch | 6 |
| Mesoscale Discussion | 22 |
| Special Weather Statement | 16 |
| Flooding | |
| Flash Flood Warning | 4 |
| Flash Flood Watch | 4 |
| Areal Flood Advisory | 5 |
| Winter | |
| Winter Weather Advisory | 1 |
| Heat | |
| Heat Advisory | 6 |
| Cold | |
| Freeze Warning | 2 |
| Hard Freeze Warning | 2 |
| Wind and dust | |
| Lake Wind Advisory | 23 |
| Fog and smoke | |
| Dense Fog Advisory | 4 |
The busiest days
Days with the most alerts issued, by UTC date.
Nearby
Alerts in force nowTornadoes on recordForecastThe radar archive20162018
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.