Alert archive / Louisiana / Assumption Parish
Weather alerts in Assumption Parish, Louisiana, 2017
134 weather alerts in 2017, from the National Weather Service and the Storm Prediction Center. An alert counts here when it covered this county.
Assumption Parish and its neighbors
Each county as a circle sized by its count in 2017. Tap one for its archive.
- Alerts
- 134
- Warnings
- 20
- Watches
- 22
- Advisories
- 40
- Busiest month
- June22 alerts
- Busiest day
- August 29, 201710 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 1 tornado warnings covering Assumption Parish in 2017 had a tornado report inside them.
Assumption Parish, 2017
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| Tornado warnings | 1 | 0 | 100% | 0 | ||
| Severe thunderstorm warnings | 5 | 1 | 80% | 0 | ||
| Flash flood warnings | 1 | 0 | 100% | 0 |
Each office's whole area, 2017
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| NWS New Orleans, LA: tornado warnings | 119 | 15 | 87% | 48 | 50% | 14 min |
| NWS New Orleans, LA: severe thunderstorm warnings | 143 | 34 | 76% | 106 | 59% | 18 min |
| NWS New Orleans, LA: flash flood warnings | 45 | 15 | 67% | 32 | 75% | 68 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, 2:50 AM CST | Dense Fog Advisory | LIX | 6 hr |
| Jan 2, 11:22 AM CST | Tornado Watch | SPC | 9 hr |
| Jan 2, 2:38 PM CST | Special Weather Statement | LIX | 67 min |
| Jan 2, 9:27 PM CST | Dense Fog Advisory | LIX | 11 hr |
| Jan 6, 3:51 AM CST | Freeze Warning | LIX | 29 hr |
| Jan 6, 9:49 AM CST | Wind Chill Advisory | LIX | 24 hr |
| Jan 6, 10:28 AM CST | Wind Advisory | LIX | 23 hr |
| Jan 7, 9:47 AM CST | Hard Freeze Warning | LIX | 50 min |
| Jan 7, 10:37 AM CST | Hard Freeze Warning | LIX | 22 hr |
| Jan 13, 3:40 AM CST | Dense Fog Advisory | LIX | 5 hr |
| Jan 13, 3:37 PM CST | Dense Fog Advisory | LIX | 20 hr |
| Jan 14, 3:41 PM CST | Dense Fog Advisory | LIX | 18 hr |
| Jan 17, 7:20 PM CST | Dense Fog Advisory | LIX | 15 hr |
| Jan 19, 6:28 AM CST | Mesoscale Discussion | SPC | 2 hr |
| Jan 19, 9:03 AM CST | Flash Flood Watch | LIX | 9 hr |
| Jan 20, 10:44 PM CST | Mesoscale Discussion | SPC | 61 min |
| Jan 20, 11:00 PM CST | Tornado Watch | SPC | 8 hr |
| Jan 21, 2:55 AM CST | Mesoscale Discussion | SPC | 2 hr |
| Jan 21, 6:05 PM CST | Mesoscale Discussion | SPC | 85 min |
| Jan 22, 4:13 AM CST | Wind Advisory | LIX | 20 hr |
| Feb 2, 4:33 AM CST | Dense Fog Advisory | LIX | 4 hr |
| Feb 7, 5:59 AM CST | Mesoscale Discussion | SPC | 2 hr |
| Feb 7, 7:54 AM CST | Tornado Watch | SPC | 11 hr |
| Feb 7, 10:18 AM CST | Mesoscale Discussion | SPC | 117 min |
| Feb 14, 2:02 PM CST | Mesoscale Discussion | SPC | 2 hr |
| Feb 18, 3:40 PM CST | Dense Fog Advisory | LIX | 17 hr |
| Feb 20, 2:37 PM CST | Mesoscale Discussion | SPC | 113 min |
| Mar 20, 4:07 AM CDT | Dense Fog Advisory | LIX | 5 hr |
| Mar 20, 9:33 PM CDT | Dense Fog Advisory | LIX | 12 hr |
| Mar 24, 9:06 AM CDT | Wind Advisory | LIX | 10 hr |
| Mar 30, 1:34 AM CDT | Mesoscale Discussion | SPC | 86 min |
| Mar 30, 4:45 AM CDT | Special Weather Statement | LCH | 45 min |
| Mar 30, 7:51 AM CDT | Special Weather Statement | LIX | 54 min |
| Apr 1, 3:01 PM CDT | Flash Flood Watch | LIX | 42 hr |
| Apr 2, 4:45 AM CDT | Wind Advisory | LIX | 26 hr |
| Apr 2, 11:37 PM CDT | Mesoscale Discussion | SPC | 83 min |
| Apr 3, 1:48 AM CDT | Tornado Watch | SPC | 10 hr |
| Apr 5, 10:08 AM CDT | Wind Advisory | LIX | 17 hr |
| Apr 28, 3:28 PM CDT | Wind Advisory | LIX | 31 hr |
| Apr 29, 11:32 PM CDT | Wind Advisory | LIX | 16 hr |
| Apr 30, 6:59 AM CDT | Mesoscale Discussion | SPC | 2 hr |
| Apr 30, 7:32 AM CDT | Tornado Watch | SPC | 7 hr |
| Apr 30, 8:57 AM CDT | Severe Thunderstorm Warning | LIX | 33 min |
| Apr 30, 10:07 AM CDT | Areal Flood Advisory | LIX | 113 min |
| May 2, 3:50 PM CDT | Flash Flood Watch | LIX | 35 hr |
| May 3, 7:32 AM CDT | Tornado Watch | SPC | 9 hr |
| May 3, 8:19 AM CDT | Severe Thunderstorm Warning | LIX | 26 min |
| May 3, 9:58 AM CDT | Special Weather Statement | LIX | 47 min |
| May 3, 10:07 AM CDT | Mesoscale Discussion | SPC | 83 min |
| May 3, 12:28 PM CDT | Severe Thunderstorm Warning | LIX | 47 min |
| May 3, 1:58 PM CDT | Mesoscale Discussion | SPC | 62 min |
| May 3, 6:54 PM CDT | Mesoscale Discussion | SPC | 96 min |
| May 12, 9:56 AM CDT | Mesoscale Discussion | SPC | 3 hr |
| May 12, 10:06 AM CDT | Special Weather Statement | LCH | 39 min |
| May 12, 10:35 AM CDT | Severe Thunderstorm Watch | SPC | 5 hr |
| May 12, 1:43 PM CDT | Mesoscale Discussion | SPC | 3 hr |
| May 21, 3:48 AM CDT | Flash Flood Watch | LIX | 56 hr |
| May 21, 1:41 PM CDT | Special Weather Statement | LIX | 64 min |
| May 28, 10:59 AM CDT | Mesoscale Discussion | SPC | 2 hr |
| May 30, 1:02 PM CDT | Areal Flood Advisory | LIX | 3 hr |
| Jun 1, 1:55 PM CDT | Special Weather Statement | LIX | 35 min |
| Jun 6, 3:38 PM CDT | Areal Flood Warning | LIX | 3 hr |
| Jun 7, 8:16 AM CDT | Areal Flood Warning | LIX | 27 hr |
| Jun 8, 11:34 AM CDT | Areal Flood Warning | LIX | 24 hr |
| Jun 9, 10:59 AM CDT | Areal Flood Warning | LIX | 24 hr |
| Jun 10, 11:00 AM CDT | Areal Flood Warning | LIX | 5 days |
| Jun 17, 1:21 PM CDT | Mesoscale Discussion | SPC | 2 hr |
| Jun 19, 3:52 PM CDT | Flash Flood Watch | LIX | 3 days |
| Jun 19, 4:26 PM CDT | Tropical Storm Warning | LIX | 60 hr |
| Jun 20, 10:24 PM CDT | Tornado Watch | SPC | 12 hr |
| Jun 21, 2:08 AM CDT | Mesoscale Discussion | SPC | 2 hr |
| Jun 21, 7:47 AM CDT | Mesoscale Discussion | SPC | 118 min |
| Jun 21, 10:01 AM CDT | Tornado Watch | SPC | 9 hr |
| Jun 21, 3:42 PM CDT | Mesoscale Discussion | SPC | 93 min |
| Jun 21, 6:29 PM CDT | Mesoscale Discussion | SPC | 61 min |
| Jun 22, 2:57 AM CDT | Tornado Watch | SPC | 10 hr |
| Jun 22, 11:50 AM CDT | Mesoscale Discussion | SPC | 85 min |
| Jun 24, 3:51 AM CDT | Flash Flood Watch | LIX | 17 hr |
| Jun 25, 3:46 PM CDT | Special Weather Statement | LIX | 29 min |
| Jun 29, 2:54 AM CDT | Flash Flood Watch | LIX | 18 hr |
| Jun 29, 9:22 AM CDT | Special Weather Statement | LIX | 53 min |
| Jun 29, 10:05 AM CDT | Special Weather Statement | LIX | 55 min |
| Jul 7, 1:41 PM CDT | Special Weather Statement | LIX | 49 min |
| Jul 9, 7:14 PM CDT | Special Weather Statement | LIX | 31 min |
| Jul 13, 2:16 PM CDT | Special Weather Statement | LIX | 44 min |
| Jul 16, 1:32 PM CDT | Special Weather Statement | LIX | 43 min |
| Jul 19, 4:52 PM CDT | Special Weather Statement | LIX | 38 min |
| Jul 24, 9:49 AM CDT | Flash Flood Watch | LIX | 32 hr |
| Aug 3, 5:44 AM CDT | Areal Flood Advisory | LIX | 3 hr |
| Aug 16, 3:34 PM CDT | Heat Advisory | LIX | 27 hr |
| Aug 19, 5:24 PM CDT | Special Weather Statement | LIX | 51 min |
| Aug 19, 5:52 PM CDT | Severe Thunderstorm Warning | LIX | 23 min |
| Aug 19, 5:54 PM CDT | Severe Thunderstorm Warning | LIX | 36 min |
| Aug 22, 3:17 PM CDT | Special Weather Statement | LIX | 43 min |
| Aug 27, 3:55 PM CDT | Flash Flood Watch | LIX | 4 days |
| Aug 28, 11:37 AM CDT | Mesoscale Discussion | SPC | 83 min |
| Aug 28, 12:16 PM CDT | Tornado Watch | SPC | 12 hr |
| Aug 28, 6:49 PM CDT | Mesoscale Discussion | SPC | 116 min |
| Aug 28, 11:32 PM CDT | Mesoscale Discussion | SPC | 118 min |
| Aug 29, 6:20 AM CDT | Mesoscale Discussion | SPC | 115 min |
| Aug 29, 8:00 AM CDT | Areal Flood Advisory | LIX | 4 hr |
| Aug 29, 10:27 AM CDT | Tropical Storm Watch | LIX | 12 hr |
| Aug 29, 11:22 AM CDT | Special Weather Statement | LIX | 53 min |
| Aug 29, 11:30 AM CDT | Flash Flood Warning | LIX | 2 hr |
| Aug 29, 11:47 AM CDT | Areal Flood Advisory | LIX | 3 hr |
| Aug 29, 2:00 PM CDT | Tornado Warning | LIX | 45 min |
| Aug 29, 2:09 PM CDT | Mesoscale Discussion | SPC | 3 hr |
| Aug 29, 4:31 PM CDT | Wind Advisory | LIX | 31 hr |
| Aug 29, 10:29 PM CDT | Tropical Storm Warning | LIX | 21 hr |
| Sep 20, 5:36 PM CDT | Special Weather Statement | LIX | 54 min |
| Oct 5, 10:16 PM CDT | Hurricane Watch | LIX | 42 hr |
| Oct 6, 10:39 AM CDT | Hurricane Warning | LIX | 42 hr |
| Oct 6, 10:39 AM CDT | Tropical Storm Warning | LIX | 44 hr |
| Oct 11, 5:43 AM CDT | Dense Fog Advisory | LIX | 3 hr |
| Oct 22, 5:41 AM CDT | Mesoscale Discussion | SPC | 2 hr |
| Nov 3, 5:45 AM CDT | Dense Fog Advisory | LIX | 4 hr |
| Nov 5, 9:43 PM CST | Dense Fog Advisory | LIX | 8 hr |
| Nov 7, 4:23 AM CST | Dense Fog Advisory | LIX | 4 hr |
| Nov 8, 3:57 AM CST | Dense Fog Advisory | LIX | 5 hr |
| Nov 16, 3:13 AM CST | Dense Fog Advisory | LIX | 6 hr |
| Nov 18, 8:53 PM CST | Special Weather Statement | LIX | 52 min |
| Nov 29, 9:55 PM CST | Dense Fog Advisory | LIX | 11 hr |
| Dec 1, 9:31 PM CST | Dense Fog Advisory | LIX | 11 hr |
| Dec 2, 4:06 PM CST | Dense Fog Advisory | LIX | 17 hr |
| Dec 7, 4:51 AM CST | Winter Weather Advisory | LIX | 37 hr |
| Dec 8, 3:20 PM CST | Freeze Warning | LIX | 19 hr |
| Dec 17, 6:28 AM CST | Special Weather Statement | LIX | 62 min |
| Dec 17, 5:13 PM CST | Dense Fog Advisory | LIX | 23 hr |
| Dec 18, 9:10 AM CST | Special Weather Statement | LIX | 65 min |
| Dec 18, 10:06 AM CST | Areal Flood Advisory | LIX | 114 min |
| Dec 18, 5:47 PM CST | Dense Fog Advisory | LIX | 42 hr |
| Dec 21, 3:14 AM CST | Dense Fog Advisory | LIX | 6 hr |
| Dec 21, 3:51 PM CST | Dense Fog Advisory | LIX | 18 hr |
| Dec 23, 5:13 AM CST | Special Weather Statement | LIX | 62 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 | 5 |
| Tornado Warning | 1 |
| Severe Thunderstorm Watch | 1 |
| Tornado Watch | 10 |
| Mesoscale Discussion | 29 |
| Special Weather Statement | 23 |
| Flooding | |
| Areal Flood Warning | 5 |
| Flash Flood Warning | 1 |
| Flash Flood Watch | 9 |
| Areal Flood Advisory | 6 |
| Winter | |
| Winter Weather Advisory | 1 |
| Heat | |
| Heat Advisory | 1 |
| Cold | |
| Freeze Warning | 2 |
| Hard Freeze Warning | 2 |
| Wind Chill Advisory | 1 |
| Wind and dust | |
| Wind Advisory | 8 |
| Fog and smoke | |
| Dense Fog Advisory | 23 |
| Tropical | |
| Hurricane Warning | 1 |
| Tropical Storm Warning | 3 |
| Hurricane Watch | 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 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.