Alert archive / Louisiana / Assumption Parish
Weather alerts in Assumption Parish, Louisiana, 2012
137 weather alerts in 2012, 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 2012. Tap one for its archive.
- Alerts
- 137
- Warnings
- 30
- Watches
- 29
- Advisories
- 37
- Busiest month
- December21 alerts
- Busiest day
- March 12, 20127 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 2012 had a tornado report inside them.
Assumption Parish, 2012
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| Tornado warnings | 1 | 0 | 100% | 0 | ||
| Severe thunderstorm warnings | 12 | 1 | 92% | 0 | ||
| Flash flood warnings | 2 | 0 | 100% | 0 |
Each office's whole area, 2012
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| NWS New Orleans, LA: tornado warnings | 111 | 21 | 81% | 34 | 74% | 14 min |
| NWS New Orleans, LA: severe thunderstorm warnings | 202 | 50 | 75% | 111 | 59% | 22 min |
| NWS New Orleans, LA: flash flood warnings | 83 | 30 | 64% | 48 | 83% | 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 2, 5:22 AM CST | Freeze Warning | LIX | 25 hr |
| Jan 3, 4:42 AM CST | Freeze Warning | LIX | 27 hr |
| Jan 5, 10:57 PM CST | Dense Fog Advisory | LIX | 10 hr |
| Jan 6, 3:20 PM CST | Dense Fog Advisory | LIX | 18 hr |
| Jan 12, 4:36 AM CST | Freeze Warning | LIX | 24 hr |
| Jan 13, 3:31 PM CST | Freeze Warning | LIX | 17 hr |
| Jan 13, 3:31 PM CST | Hard Freeze Warning | LIX | 17 hr |
| Jan 22, 1:15 AM CST | Dense Fog Advisory | LIX | 10 hr |
| Jan 24, 8:30 PM CST | Dense Fog Advisory | LIX | 7 hr |
| Jan 25, 2:08 PM CST | Tornado Watch | SPC | 7 hr |
| Jan 25, 7:45 PM CST | Flash Flood Watch | LIX | 15 hr |
| Jan 25, 8:23 PM CST | Mesoscale Discussion | SPC | 97 min |
| Jan 25, 9:50 PM CST | Areal Flood Advisory | LIX | 224 days |
| Jan 26, 2:05 AM CST | Mesoscale Discussion | SPC | 2 hr |
| Feb 1, 9:27 PM CST | Dense Fog Advisory | LIX | 12 hr |
| Feb 10, 3:54 PM CST | Freeze Watch | LIX | 13 hr |
| Feb 11, 4:32 AM CST | Freeze Warning | LIX | 28 hr |
| Feb 11, 4:32 AM CST | Hard Freeze Warning | LIX | 23 hr |
| Feb 15, 5:46 PM CST | Mesoscale Discussion | SPC | 59 min |
| Feb 17, 3:56 AM CST | Flash Flood Watch | LIX | 41 hr |
| Feb 18, 8:29 AM CST | Mesoscale Discussion | SPC | 31 min |
| Feb 18, 9:31 AM CST | Mesoscale Discussion | SPC | 59 min |
| Feb 18, 9:55 AM CST | Tornado Watch | SPC | 7 hr |
| Feb 18, 11:06 AM CST | Severe Thunderstorm Warning | LIX | 54 min |
| Feb 18, 11:21 AM CST | Mesoscale Discussion | SPC | 54 min |
| Feb 22, 3:47 AM CST | Dense Fog Advisory | LIX | 4 hr |
| Feb 23, 4:21 AM CST | Wind Advisory | LIX | 14 hr |
| Feb 28, 2:31 AM CST | Dense Fog Advisory | LIX | 6 hr |
| Feb 28, 6:01 PM CST | Dense Fog Advisory | LIX | 12 hr |
| Feb 29, 4:03 PM CST | Dense Fog Advisory | LIX | 13 hr |
| Mar 11, 11:17 PM CDT | Mesoscale Discussion | SPC | 88 min |
| Mar 12, 1:23 AM CDT | Mesoscale Discussion | SPC | 2 hr |
| Mar 12, 3:38 AM CDT | Severe Thunderstorm Warning | LIX | 52 min |
| Mar 12, 8:55 AM CDT | Mesoscale Discussion | SPC | 65 min |
| Mar 12, 12:16 PM CDT | Severe Thunderstorm Warning | LIX | 59 min |
| Mar 12, 1:29 PM CDT | Areal Flood Advisory | LIX | 2 hr |
| Mar 12, 6:17 PM CDT | Severe Thunderstorm Warning | LIX | 58 min |
| Mar 14, 3:50 PM CDT | Dense Fog Advisory | LIX | 18 hr |
| Mar 15, 3:45 PM CDT | Dense Fog Advisory | LIX | 18 hr |
| Mar 16, 3:19 PM CDT | Dense Fog Advisory | LIX | 7 hr |
| Mar 19, 3:40 PM CDT | Wind Advisory | LIX | 26 hr |
| Mar 20, 4:19 AM CDT | Flash Flood Watch | LIX | 3 days |
| Mar 21, 4:38 AM CDT | Mesoscale Discussion | SPC | 97 min |
| Mar 21, 5:04 AM CDT | Tornado Watch | SPC | 7 hr |
| Mar 21, 7:48 AM CDT | Mesoscale Discussion | SPC | 87 min |
| Mar 21, 8:30 AM CDT | Severe Thunderstorm Warning | LIX | 60 min |
| Mar 21, 8:45 AM CDT | Areal Flood Advisory | LIX | 2 hr |
| Mar 21, 8:49 AM CDT | Tornado Warning | LIX | 38 min |
| Mar 21, 9:18 AM CDT | Severe Thunderstorm Warning | LIX | 57 min |
| Apr 2, 9:57 AM CDT | Mesoscale Discussion | SPC | 63 min |
| Apr 2, 10:10 AM CDT | Severe Thunderstorm Watch | SPC | 7 hr |
| Apr 2, 12:15 PM CDT | Mesoscale Discussion | SPC | 90 min |
| Apr 2, 12:50 PM CDT | Severe Thunderstorm Watch | SPC | 7 hr |
| Apr 4, 2:29 AM CDT | Mesoscale Discussion | SPC | 91 min |
| Apr 4, 2:57 AM CDT | Flash Flood Watch | LIX | 30 hr |
| Apr 4, 8:25 PM CDT | Mesoscale Discussion | SPC | 95 min |
| Apr 5, 3:30 AM CDT | Mesoscale Discussion | SPC | 2 hr |
| Apr 5, 3:52 AM CDT | Severe Thunderstorm Warning | LIX | 38 min |
| Apr 5, 3:56 AM CDT | Tornado Watch | SPC | 6 hr |
| Apr 5, 5:26 AM CDT | Special Weather Statement | LCH | 34 min |
| Apr 16, 12:56 PM CDT | Mesoscale Discussion | SPC | 2 hr |
| Apr 16, 9:06 PM CDT | Flash Flood Watch | LIX | 19 hr |
| May 2, 6:21 PM CDT | Flash Flood Watch | LIX | 6 hr |
| May 6, 7:17 PM CDT | Areal Flood Advisory | LIX | 118 min |
| May 11, 4:08 AM CDT | Flash Flood Watch | LIX | 39 hr |
| May 12, 10:39 AM CDT | Mesoscale Discussion | SPC | 2 hr |
| May 31, 10:41 AM CDT | Severe Thunderstorm Watch | SPC | 6 hr |
| May 31, 1:53 PM CDT | Mesoscale Discussion | SPC | 67 min |
| Jun 6, 2:10 PM CDT | Mesoscale Discussion | SPC | 2 hr |
| Jun 6, 5:26 PM CDT | Severe Thunderstorm Warning | LIX | 21 min |
| Jun 8, 4:06 AM CDT | Flood Watch | LIX | 63 hr |
| Jun 9, 2:08 PM CDT | Areal Flood Advisory | LIX | 112 min |
| Jun 12, 7:11 AM CDT | Severe Thunderstorm Watch | SPC | 8 hr |
| Jun 23, 4:00 PM CDT | Tropical Storm Warning | NHC | 3 days |
| Jun 23, 4:06 PM CDT | Tropical Storm Warning | LIX | 36 hr |
| Jul 19, 3:37 PM CDT | Flash Flood Watch | LIX | 49 hr |
| Jul 19, 6:30 PM CDT | Areal Flood Advisory | LIX | 2 hr |
| Jul 20, 2:19 PM CDT | Flash Flood Warning | LIX | 116 min |
| Jul 20, 2:40 PM CDT | Special Weather Statement | LCH | 50 min |
| Jul 20, 3:03 PM CDT | Mesoscale Discussion | SPC | 2 hr |
| Jul 20, 4:02 PM CDT | Flash Flood Warning | LIX | 2 hr |
| Jul 29, 3:04 PM CDT | Heat Advisory | LIX | 28 hr |
| Jul 31, 4:20 AM CDT | Heat Advisory | LIX | 39 hr |
| Aug 3, 10:40 AM CDT | Heat Advisory | LIX | 8 hr |
| Aug 3, 2:53 PM CDT | Special Weather Statement | LCH | 67 min |
| Aug 8, 1:54 PM CDT | Areal Flood Advisory | LIX | 111 min |
| Aug 10, 3:44 PM CDT | Areal Flood Advisory | LIX | 69 min |
| Aug 19, 7:00 AM CDT | Flash Flood Watch | LIX | 25 hr |
| Aug 19, 11:43 AM CDT | Areal Flood Advisory | LIX | 62 min |
| Aug 21, 10:00 PM CDT | Tropical Storm Warning | NHC | 55 days |
| Aug 25, 4:00 AM CDT | Hurricane Warning | NHC | 4 days |
| Aug 26, 4:06 AM CDT | Hurricane Watch | LIX | 12 hr |
| Aug 26, 4:25 PM CDT | Hurricane Warning | LIX | 70 hr |
| Aug 26, 4:25 PM CDT | Tropical Storm Warning | LIX | 4 days |
| Aug 27, 11:20 AM CDT | Flash Flood Watch | LIX | 5 days |
| Aug 28, 12:37 PM CDT | Mesoscale Discussion | SPC | 83 min |
| Aug 28, 6:47 PM CDT | Tornado Watch | SPC | 21 hr |
| Aug 29, 1:55 AM CDT | Mesoscale Discussion | SPC | 2 hr |
| Aug 29, 5:46 AM CDT | Mesoscale Discussion | SPC | 89 min |
| Aug 29, 6:36 AM CDT | Tornado Watch | SPC | 9 hr |
| Aug 29, 11:48 AM CDT | Mesoscale Discussion | SPC | 117 min |
| Sep 29, 4:05 PM CDT | Flash Flood Watch | LIX | 26 hr |
| Sep 30, 10:33 AM CDT | Mesoscale Discussion | SPC | 117 min |
| Oct 3, 2:52 AM CDT | Mesoscale Discussion | SPC | 2 hr |
| Oct 5, 6:12 AM CDT | Dense Fog Advisory | LIX | 3 hr |
| Oct 18, 1:16 AM CDT | Mesoscale Discussion | SPC | 59 min |
| Oct 24, 5:27 AM CDT | Dense Fog Advisory | LIX | 4 hr |
| Oct 25, 4:05 AM CDT | Dense Fog Advisory | LIX | 5 hr |
| Oct 26, 5:33 AM CDT | Dense Fog Advisory | LIX | 5 hr |
| Nov 2, 3:37 AM CDT | Dense Fog Advisory | LIX | 5 hr |
| Nov 2, 4:04 PM CDT | Dense Fog Advisory | LIX | 18 hr |
| Nov 5, 1:19 PM CST | Mesoscale Discussion | SPC | 86 min |
| Nov 5, 4:43 PM CST | Mesoscale Discussion | SPC | 92 min |
| Nov 5, 5:29 PM CST | Severe Thunderstorm Watch | SPC | 6 hr |
| Nov 5, 7:06 PM CST | Severe Thunderstorm Warning | LIX | 54 min |
| Nov 5, 7:35 PM CST | Mesoscale Discussion | SPC | 115 min |
| Dec 1, 12:17 AM CST | Dense Fog Advisory | LIX | 9 hr |
| Dec 7, 3:05 AM CST | Dense Fog Advisory | LIX | 6 hr |
| Dec 7, 7:46 PM CST | Dense Fog Advisory | LIX | 13 hr |
| Dec 10, 4:07 AM CST | Mesoscale Discussion | SPC | 113 min |
| Dec 10, 5:44 AM CST | Tornado Watch | SPC | 5 hr |
| Dec 10, 7:31 AM CST | Mesoscale Discussion | SPC | 119 min |
| Dec 10, 8:20 AM CST | Severe Thunderstorm Warning | LIX | 40 min |
| Dec 10, 9:43 AM CST | Severe Thunderstorm Warning | LIX | 47 min |
| Dec 12, 5:08 AM CST | Freeze Warning | LIX | 28 hr |
| Dec 16, 12:23 PM CST | Mesoscale Discussion | SPC | 67 min |
| Dec 16, 9:49 PM CST | Mesoscale Discussion | SPC | 56 min |
| Dec 19, 3:24 PM CST | Wind Advisory | LIX | 36 hr |
| Dec 20, 4:23 AM CST | Tornado Watch | SPC | 9 hr |
| Dec 25, 7:00 AM CST | Mesoscale Discussion | SPC | 60 min |
| Dec 25, 7:28 AM CST | Tornado Watch | SPC | 6 hr |
| Dec 25, 10:28 AM CST | Wind Advisory | LIX | 20 hr |
| Dec 25, 12:19 PM CST | Mesoscale Discussion | SPC | 71 min |
| Dec 25, 12:58 PM CST | Tornado Watch | SPC | 9 hr |
| Dec 25, 3:44 PM CST | Mesoscale Discussion | SPC | 91 min |
| Dec 25, 5:09 PM CST | Severe Thunderstorm Warning | LIX | 47 min |
| Dec 29, 3:52 PM CST | Freeze Warning | LIX | 16 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 | 12 |
| Tornado Warning | 1 |
| Severe Thunderstorm Watch | 5 |
| Tornado Watch | 10 |
| Mesoscale Discussion | 38 |
| Special Weather Statement | 3 |
| Flooding | |
| Flash Flood Warning | 2 |
| Flash Flood Watch | 11 |
| Flood Watch | 1 |
| Areal Flood Advisory | 9 |
| Heat | |
| Heat Advisory | 3 |
| Cold | |
| Freeze Warning | 7 |
| Hard Freeze Warning | 2 |
| Freeze Watch | 1 |
| Wind and dust | |
| Wind Advisory | 4 |
| Fog and smoke | |
| Dense Fog Advisory | 21 |
| Tropical | |
| Hurricane Warning | 2 |
| Tropical Storm Warning | 4 |
| Hurricane Watch | 1 |
The busiest days
Days with the most alerts issued, by UTC date.
Nearby
Alerts in force nowTornadoes on recordForecastThe radar archive20112013
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.