Alert archive / Mississippi / Lamar County
Weather alerts in Lamar County, Mississippi, 2020
111 weather alerts in 2020, from the National Weather Service and the Storm Prediction Center. An alert counts here when it covered this county.
Lamar County and its neighbors
Each county as a circle sized by its count in 2020. Tap one for its archive.
- Alerts
- 111
- Warnings
- 28
- Watches
- 14
- Advisories
- 20
- Busiest month
- April19 alerts
- Busiest day
- February 6, 20206 alerts
Over time
By month
Warning verification
How often warnings here had a storm report inside them, and how much warning the reports had.
4 of 4 tornado warnings covering Lamar County in 2020 had a tornado report inside them; 5 of 5 tornado reports fell inside a warning, on average 43 minutes after it went out.
Lamar County, 2020
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| Tornado warnings | 4 | 4 | 0% | 5 | 100% | 43 min |
| Severe thunderstorm warnings | 13 | 11 | 15% | 19 | 42% | 5 min |
| Flash flood warnings | 7 | 6 | 14% | 7 | 86% | 43 min |
Each office's whole area, 2020
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| NWS Jackson, MS: tornado warnings | 60 | 37 | 38% | 149 | 85% | 26 min |
| NWS Jackson, MS: severe thunderstorm warnings | 423 | 268 | 37% | 898 | 83% | 26 min |
| NWS Jackson, MS: flash flood warnings | 108 | 73 | 32% | 276 | 85% | 87 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 9, 2:27 PM CST | Wind Advisory | JAN | 48 hr |
| Jan 11, 7:39 AM CST | Mesoscale Discussion | SPC | 96 min |
| Jan 11, 7:57 AM CST | Tornado Watch | SPC | 9 hr |
| Jan 11, 9:21 AM CST | Severe Thunderstorm Warning | JAN | 54 min |
| Jan 11, 9:49 AM CST | Severe Thunderstorm Warning | JAN | 56 min |
| Jan 11, 9:54 AM CST | Mesoscale Discussion | SPC | 96 min |
| Jan 13, 2:36 PM CST | Dense Fog Advisory | JAN | 18 hr |
| Jan 18, 12:43 PM CST | Mesoscale Discussion | SPC | 2 hr |
| Jan 28, 12:33 AM CST | Dense Fog Advisory | JAN | 10 hr |
| Jan 30, 4:11 AM CST | Dense Fog Advisory | JAN | 5 hr |
| Feb 5, 11:49 AM CST | Tornado Watch | SPC | 6 hr |
| Feb 5, 3:59 PM CST | Severe Thunderstorm Warning | JAN | 61 min |
| Feb 5, 5:06 PM CST | Mesoscale Discussion | SPC | 84 min |
| Feb 5, 5:50 PM CST | Tornado Watch | SPC | 6 hr |
| Feb 5, 9:43 PM CST | Mesoscale Discussion | SPC | 2 hr |
| Feb 5, 11:15 PM CST | Mesoscale Discussion | SPC | 2 hr |
| Feb 5, 11:21 PM CST | Severe Thunderstorm Warning | JAN | 39 min |
| Feb 5, 11:48 PM CST | Tornado Watch | SPC | 8 hr |
| Feb 6, 3:19 AM CST | Special Weather Statement | JAN | 26 min |
| Feb 6, 3:57 AM CST | Special Weather Statement | JAN | 33 min |
| Feb 10, 4:33 PM CST | Mesoscale Discussion | SPC | 87 min |
| Feb 10, 5:23 PM CST | Flash Flood Warning | JAN | 87 min |
| Feb 25, 5:04 AM CST | Dense Fog Advisory | JAN | 4 hr |
| Mar 3, 2:38 PM CST | Flash Flood Watch | JAN | 39 hr |
| Mar 4, 1:19 AM CST | Mesoscale Discussion | SPC | 2 hr |
| Mar 4, 1:53 AM CST | Tornado Watch | SPC | 8 hr |
| Mar 4, 10:50 AM CST | Mesoscale Discussion | SPC | 115 min |
| Mar 4, 5:05 PM CST | Mesoscale Discussion | SPC | 2 hr |
| Mar 11, 2:31 AM CDT | Dense Fog Advisory | JAN | 6 hr |
| Mar 31, 7:53 AM CDT | Mesoscale Discussion | SPC | 2 hr |
| Apr 11, 3:44 PM CDT | Wind Advisory | JAN | 30 hr |
| Apr 12, 1:02 PM CDT | Mesoscale Discussion | SPC | 118 min |
| Apr 12, 1:24 PM CDT | Tornado Watch | SPC | 9 hr |
| Apr 12, 3:39 PM CDT | Tornado Warning | JAN | 66 min |
| Apr 12, 8:20 PM CDT | Severe Thunderstorm Warning | JAN | 25 min |
| Apr 19, 11:06 AM CDT | Mesoscale Discussion | SPC | 54 min |
| Apr 19, 11:45 AM CDT | Tornado Watch | SPC | 9 hr |
| Apr 19, 6:37 PM CDT | Mesoscale Discussion | SPC | 53 min |
| Apr 19, 6:55 PM CDT | Tornado Warning | JAN | 65 min |
| Apr 19, 7:42 PM CDT | Mesoscale Discussion | SPC | 33 min |
| Apr 19, 7:44 PM CDT | Tornado Warning | JAN | 31 min |
| Apr 19, 7:45 PM CDT | Severe Thunderstorm Warning | JAN | 30 min |
| Apr 19, 8:04 PM CDT | Flash Flood Warning | JAN | 3 hr |
| Apr 22, 6:47 PM CDT | Mesoscale Discussion | SPC | 88 min |
| Apr 22, 9:47 PM CDT | Tornado Watch | SPC | 9 hr |
| Apr 23, 2:28 AM CDT | Mesoscale Discussion | SPC | 92 min |
| Apr 23, 3:45 AM CDT | Severe Thunderstorm Warning | JAN | 48 min |
| Apr 23, 3:57 AM CDT | Tornado Warning | JAN | 31 min |
| Apr 23, 1:37 PM CDT | Mesoscale Discussion | SPC | 113 min |
| May 6, 10:26 AM CDT | Red Flag Warning | JAN | 9 hr |
| May 8, 9:30 AM CDT | Mesoscale Discussion | SPC | 2 hr |
| May 17, 12:54 PM CDT | Mesoscale Discussion | SPC | 2 hr |
| May 24, 3:13 PM CDT | Special Weather Statement | JAN | 32 min |
| May 24, 3:34 PM CDT | Special Weather Statement | JAN | 41 min |
| May 26, 3:10 PM CDT | Special Weather Statement | JAN | 65 min |
| May 26, 3:20 PM CDT | Flash Flood Warning | JAN | 83 min |
| May 27, 12:16 PM CDT | Mesoscale Discussion | SPC | 89 min |
| May 27, 2:36 PM CDT | Mesoscale Discussion | SPC | 84 min |
| Jun 5, 8:01 PM CDT | Severe Thunderstorm Warning | JAN | 74 min |
| Jun 6, 4:24 PM CDT | Flash Flood Watch | JAN | 57 hr |
| Jun 7, 11:26 AM CDT | Wind Advisory | JAN | 22 hr |
| Jun 7, 2:15 PM CDT | Special Weather Statement | JAN | 60 min |
| Jun 24, 6:08 AM CDT | Mesoscale Discussion | SPC | 2 hr |
| Jun 24, 9:22 AM CDT | Special Weather Statement | JAN | 23 min |
| Jun 25, 3:43 PM CDT | Mesoscale Discussion | SPC | 62 min |
| Jun 25, 5:01 PM CDT | Severe Thunderstorm Warning | JAN | 74 min |
| Jul 4, 4:13 PM CDT | Special Weather Statement | JAN | 32 min |
| Jul 8, 2:59 PM CDT | Special Weather Statement | JAN | 46 min |
| Jul 8, 3:15 PM CDT | Severe Thunderstorm Warning | JAN | 60 min |
| Jul 8, 3:31 PM CDT | Flash Flood Warning | JAN | 102 min |
| Jul 10, 2:38 AM CDT | Heat Advisory | JAN | 16 hr |
| Jul 10, 3:19 PM CDT | Heat Advisory | JAN | 28 hr |
| Jul 11, 2:32 PM CDT | Heat Advisory | JAN | 28 hr |
| Jul 12, 2:51 PM CDT | Heat Advisory | JAN | 28 hr |
| Jul 12, 7:53 PM CDT | Severe Thunderstorm Warning | JAN | 67 min |
| Jul 12, 11:38 PM CDT | Special Weather Statement | JAN | 52 min |
| Jul 13, 2:58 PM CDT | Heat Advisory | JAN | 28 hr |
| Jul 15, 12:24 PM CDT | Mesoscale Discussion | SPC | 96 min |
| Jul 15, 5:12 PM CDT | Severe Thunderstorm Warning | JAN | 48 min |
| Jul 15, 5:16 PM CDT | Flash Flood Warning | JAN | 80 min |
| Aug 14, 2:08 PM CDT | Special Weather Statement | JAN | 67 min |
| Aug 16, 7:42 PM CDT | Special Weather Statement | JAN | 33 min |
| Aug 16, 7:48 PM CDT | Severe Thunderstorm Warning | JAN | 42 min |
| Aug 20, 12:24 AM CDT | Flash Flood Warning | JAN | 76 min |
| Aug 25, 11:28 AM CDT | Flash Flood Warning | JAN | 4 hr |
| Aug 25, 5:21 PM CDT | Special Weather Statement | JAN | 24 min |
| Aug 27, 6:36 AM CDT | Mesoscale Discussion | SPC | 114 min |
| Sep 13, 2:32 AM CDT | Flash Flood Watch | JAN | 66 hr |
| Sep 13, 4:15 PM CDT | Tropical Storm Watch | JAN | 42 hr |
| Sep 13, 10:45 PM CDT | Tropical Storm Warning | JAN | 36 hr |
| Sep 27, 4:02 AM CDT | Dense Fog Advisory | JAN | 6 hr |
| Oct 9, 4:20 AM CDT | Wind Advisory | JAN | 33 hr |
| Oct 9, 3:50 PM CDT | Mesoscale Discussion | SPC | 85 min |
| Oct 19, 7:09 PM CDT | Dense Fog Advisory | JAN | 14 hr |
| Oct 23, 4:40 PM CDT | Special Weather Statement | JAN | 35 min |
| Oct 27, 4:25 AM CDT | Tropical Storm Warning | JAN | 43 hr |
| Oct 27, 2:23 PM CDT | Flash Flood Watch | JAN | 33 hr |
| Nov 25, 11:13 AM CST | Special Weather Statement | JAN | 32 min |
| Nov 27, 1:00 PM CST | Mesoscale Discussion | SPC | 3 hr |
| Nov 27, 5:13 PM CST | Special Weather Statement | JAN | 47 min |
| Nov 30, 2:07 PM CST | Freeze Warning | JAN | 19 hr |
| Dec 10, 2:27 PM CST | Dense Fog Advisory | JAN | 19 hr |
| Dec 12, 8:58 PM CST | Dense Fog Advisory | JAN | 12 hr |
| Dec 13, 10:11 PM CST | Special Weather Statement | JAN | 64 min |
| Dec 20, 7:57 PM CST | Dense Fog Advisory | JAN | 13 hr |
| Dec 23, 10:51 PM CST | Mesoscale Discussion | SPC | 114 min |
| Dec 24, 1:02 AM CST | Mesoscale Discussion | SPC | 58 min |
| Dec 24, 1:42 AM CST | Tornado Watch | SPC | 7 hr |
| Dec 29, 7:38 AM CST | Dense Fog Advisory | JAN | 95 min |
| Dec 31, 4:37 PM CST | Special Weather Statement | JAN | 38 min |
| Dec 31, 5:10 PM CST | Special Weather Statement | JAN | 35 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 | 13 |
| Tornado Warning | 4 |
| Tornado Watch | 9 |
| Mesoscale Discussion | 30 |
| Special Weather Statement | 19 |
| Flooding | |
| Flash Flood Warning | 7 |
| Flash Flood Watch | 4 |
| Heat | |
| Heat Advisory | 5 |
| Cold | |
| Freeze Warning | 1 |
| Wind and dust | |
| Wind Advisory | 4 |
| Fire | |
| Red Flag Warning | 1 |
| Fog and smoke | |
| Dense Fog Advisory | 11 |
| Tropical | |
| Tropical Storm Warning | 2 |
| Tropical Storm Watch | 1 |
The busiest days
Days with the most alerts issued, by UTC date.
Nearby
Alerts in force nowTornadoes on recordForecastThe radar archive20192021
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.