Alert archive / Mississippi / Marion County
Weather alerts in Marion County, Mississippi, 2018
107 weather alerts in 2018, from the National Weather Service and the Storm Prediction Center. An alert counts here when it covered this county.
Marion County and its neighbors
Each county as a circle sized by its count in 2018. Tap one for its archive.
- Alerts
- 107
- Warnings
- 32
- Watches
- 10
- Advisories
- 19
- Busiest month
- December22 alerts
- Busiest day
- July 2, 20187 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 Marion County in 2018 had a tornado report inside them.
Marion County, 2018
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| Tornado warnings | 1 | 0 | 100% | 0 | ||
| Severe thunderstorm warnings | 14 | 9 | 36% | 10 | 80% | 22 min |
| Flash flood warnings | 9 | 8 | 11% | 8 | 88% | 83 min |
Each office's whole area, 2018
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| NWS Jackson, MS: tornado warnings | 91 | 28 | 69% | 77 | 51% | 15 min |
| NWS Jackson, MS: severe thunderstorm warnings | 449 | 250 | 44% | 724 | 75% | 25 min |
| NWS Jackson, MS: flash flood warnings | 121 | 74 | 39% | 245 | 85% | 93 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, 7:18 PM CST | Dense Fog Advisory | JAN | 10 hr |
| Jan 11, 10:55 PM CST | Special Weather Statement | JAN | 50 min |
| Jan 15, 2:45 PM CST | Wind Chill Advisory | JAN | 45 hr |
| Jan 15, 2:45 PM CST | Winter Weather Advisory | JAN | 33 hr |
| Jan 15, 2:56 PM CST | Hard Freeze Warning | JAN | 69 hr |
| Feb 7, 8:03 AM CST | Special Weather Statement | JAN | 27 min |
| Feb 14, 2:34 PM CST | Dense Fog Advisory | JAN | 13 hr |
| Mar 17, 3:49 PM CDT | Special Weather Statement | JAN | 26 min |
| Mar 17, 4:18 PM CDT | Special Weather Statement | JAN | 42 min |
| Mar 17, 5:02 PM CDT | Special Weather Statement | JAN | 28 min |
| Mar 17, 5:08 PM CDT | Severe Thunderstorm Warning | JAN | 52 min |
| Mar 19, 4:55 AM CDT | Dense Fog Advisory | JAN | 5 hr |
| Apr 3, 10:30 PM CDT | Special Weather Statement | JAN | 45 min |
| Apr 3, 11:33 PM CDT | Mesoscale Discussion | SPC | 57 min |
| Apr 6, 6:02 PM CDT | Mesoscale Discussion | SPC | 58 min |
| Apr 6, 8:53 PM CDT | Severe Thunderstorm Watch | SPC | 10 hr |
| Apr 6, 10:57 PM CDT | Mesoscale Discussion | SPC | 93 min |
| Apr 6, 11:17 PM CDT | Severe Thunderstorm Warning | JAN | 38 min |
| Apr 7, 12:48 AM CDT | Special Weather Statement | JAN | 57 min |
| Apr 12, 2:51 PM CDT | Flash Flood Watch | JAN | 52 hr |
| Apr 13, 11:56 AM CDT | River Flood Warning | JAN | 24 hr |
| Apr 14, 6:37 AM CDT | Mesoscale Discussion | SPC | 83 min |
| Apr 14, 6:57 AM CDT | Tornado Watch | SPC | 7 hr |
| Apr 14, 9:07 AM CDT | Severe Thunderstorm Warning | JAN | 68 min |
| Apr 14, 9:54 AM CDT | Severe Thunderstorm Warning | JAN | 81 min |
| Apr 14, 7:50 PM CDT | River Flood Warning | JAN | 37 hr |
| Apr 22, 10:37 AM CDT | Mesoscale Discussion | SPC | 2 hr |
| May 26, 4:59 PM CDT | Severe Thunderstorm Warning | JAN | 25 min |
| Jun 3, 3:49 PM CDT | Mesoscale Discussion | SPC | 56 min |
| Jun 3, 5:37 PM CDT | Special Weather Statement | JAN | 23 min |
| Jun 3, 6:17 PM CDT | Special Weather Statement | JAN | 28 min |
| Jun 6, 5:15 AM CDT | Dense Fog Advisory | JAN | 3 hr |
| Jun 9, 6:23 PM CDT | Severe Thunderstorm Warning | JAN | 27 min |
| Jun 10, 1:53 PM CDT | Special Weather Statement | JAN | 37 min |
| Jun 12, 4:33 PM CDT | Severe Thunderstorm Warning | JAN | 30 min |
| Jun 17, 11:25 AM CDT | Special Weather Statement | JAN | 50 min |
| Jun 21, 1:28 PM CDT | Special Weather Statement | JAN | 32 min |
| Jun 21, 2:41 PM CDT | Special Weather Statement | JAN | 34 min |
| Jun 21, 3:26 PM CDT | Special Weather Statement | JAN | 34 min |
| Jun 22, 10:55 AM CDT | Severe Thunderstorm Watch | SPC | 10 hr |
| Jun 26, 3:47 AM CDT | Heat Advisory | JAN | 16 hr |
| Jun 30, 8:34 PM CDT | Special Weather Statement | JAN | 26 min |
| Jul 2, 2:47 PM CDT | Special Weather Statement | JAN | 28 min |
| Jul 2, 3:18 PM CDT | Severe Thunderstorm Warning | JAN | 42 min |
| Jul 2, 3:31 PM CDT | Special Weather Statement | JAN | 29 min |
| Jul 2, 3:36 PM CDT | Severe Thunderstorm Warning | JAN | 54 min |
| Jul 2, 4:05 PM CDT | Severe Thunderstorm Warning | JAN | 40 min |
| Jul 2, 5:30 PM CDT | Special Weather Statement | JAN | 30 min |
| Jul 2, 5:57 PM CDT | Special Weather Statement | JAN | 33 min |
| Jul 6, 9:54 PM CDT | Special Weather Statement | JAN | 36 min |
| Jul 6, 10:35 PM CDT | Special Weather Statement | JAN | 55 min |
| Jul 7, 6:06 PM CDT | Flash Flood Warning | JAN | 54 min |
| Jul 7, 6:12 PM CDT | Severe Thunderstorm Warning | JAN | 29 min |
| Jul 14, 8:01 PM CDT | Special Weather Statement | JAN | 29 min |
| Jul 15, 3:55 AM CDT | Heat Advisory | JAN | 15 hr |
| Jul 19, 3:13 PM CDT | Heat Advisory | JAN | 29 hr |
| Jul 20, 2:11 PM CDT | Severe Thunderstorm Watch | SPC | 3 hr |
| Jul 20, 4:10 PM CDT | Heat Advisory | JAN | 28 hr |
| Jul 21, 2:27 PM CDT | Heat Advisory | JAN | 30 hr |
| Jul 28, 5:27 PM CDT | Special Weather Statement | JAN | 33 min |
| Jul 29, 5:23 PM CDT | Special Weather Statement | JAN | 37 min |
| Jul 31, 1:18 PM CDT | Special Weather Statement | JAN | 27 min |
| Aug 7, 5:59 PM CDT | Special Weather Statement | JAN | 31 min |
| Aug 7, 6:07 PM CDT | Severe Thunderstorm Warning | JAN | 28 min |
| Aug 10, 1:29 PM CDT | Special Weather Statement | JAN | 31 min |
| Aug 15, 6:00 PM CDT | Special Weather Statement | JAN | 30 min |
| Aug 16, 6:09 PM CDT | Severe Thunderstorm Warning | JAN | 51 min |
| Aug 18, 4:15 PM CDT | Flash Flood Warning | JAN | 2 hr |
| Aug 19, 1:45 PM CDT | Special Weather Statement | JAN | 30 min |
| Aug 28, 12:25 PM CDT | Special Weather Statement | JAN | 65 min |
| Sep 3, 4:18 AM CDT | Flash Flood Watch | JAN | 4 days |
| Sep 3, 5:23 PM CDT | Tropical Storm Warning | JAN | 33 hr |
| Oct 31, 10:01 PM CDT | Mesoscale Discussion | SPC | 89 min |
| Oct 31, 11:07 PM CDT | Tornado Watch | SPC | 9 hr |
| Nov 1, 1:19 AM CDT | Mesoscale Discussion | SPC | 116 min |
| Nov 1, 4:01 AM CDT | Tornado Warning | JAN | 20 min |
| Nov 1, 4:23 AM CDT | Severe Thunderstorm Warning | JAN | 39 min |
| Nov 1, 4:30 AM CDT | Mesoscale Discussion | SPC | 2 hr |
| Nov 4, 9:50 PM CST | Dense Fog Advisory | JAN | 10 hr |
| Nov 7, 11:59 AM CST | Special Weather Statement | JAN | 46 min |
| Nov 13, 3:34 PM CST | Freeze Watch | JAN | 18 hr |
| Nov 14, 9:33 AM CST | Freeze Warning | JAN | 23 hr |
| Nov 14, 6:19 PM CST | Special Weather Statement | JAN | 3 hr |
| Nov 23, 10:59 PM CST | Dense Fog Advisory | JAN | 10 hr |
| Nov 24, 10:04 PM CST | Dense Fog Advisory | JAN | 11 hr |
| Dec 1, 4:31 AM CST | Mesoscale Discussion | SPC | 59 min |
| Dec 16, 2:23 PM CST | Dense Fog Advisory | JAN | 20 hr |
| Dec 18, 12:32 AM CST | Dense Fog Advisory | JAN | 9 hr |
| Dec 19, 9:37 PM CST | Dense Fog Advisory | JAN | 11 hr |
| Dec 26, 3:44 AM CST | Flash Flood Watch | JAN | 52 hr |
| Dec 26, 12:40 PM CST | Wind Advisory | JAN | 27 hr |
| Dec 26, 8:58 PM CST | Special Weather Statement | JAN | 47 min |
| Dec 27, 9:29 AM CST | Tornado Watch | SPC | 9 hr |
| Dec 27, 1:50 PM CST | Mesoscale Discussion | SPC | 85 min |
| Dec 27, 1:53 PM CST | Flash Flood Warning | JAN | 3 hr |
| Dec 27, 4:56 PM CST | Flash Flood Warning | JAN | 64 min |
| Dec 27, 5:44 PM CST | Flash Flood Warning | JAN | 4 hr |
| Dec 27, 6:39 PM CST | Flash Flood Warning | JAN | 4 hr |
| Dec 27, 9:44 PM CST | Flash Flood Warning | JAN | 4 hr |
| Dec 27, 10:30 PM CST | Flash Flood Warning | JAN | 4 hr |
| Dec 28, 1:58 AM CST | Flash Flood Warning | JAN | 6 hr |
| Dec 28, 7:47 AM CST | Areal Flood Warning | JAN | 6 hr |
| Dec 28, 9:33 AM CST | River Flood Warning | JAN | 23 hr |
| Dec 28, 1:47 PM CST | Areal Flood Warning | JAN | 24 hr |
| Dec 30, 5:31 PM CST | Dense Fog Advisory | JAN | 11 hr |
| Dec 31, 7:02 AM CST | Mesoscale Discussion | SPC | 118 min |
| Dec 31, 2:49 PM CST | Special Weather Statement | JAN | 41 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 | 1 |
| Severe Thunderstorm Watch | 3 |
| Tornado Watch | 3 |
| Mesoscale Discussion | 12 |
| Special Weather Statement | 34 |
| Flooding | |
| Areal Flood Warning | 2 |
| Flash Flood Warning | 9 |
| River Flood Warning | 3 |
| Flash Flood Watch | 3 |
| Winter | |
| Winter Weather Advisory | 1 |
| Heat | |
| Heat Advisory | 5 |
| Cold | |
| Freeze Warning | 1 |
| Hard Freeze Warning | 1 |
| Freeze Watch | 1 |
| Wind Chill Advisory | 1 |
| Wind and dust | |
| Wind Advisory | 1 |
| Fog and smoke | |
| Dense Fog Advisory | 11 |
| Tropical | |
| Tropical Storm Warning | 1 |
The busiest days
Days with the most alerts issued, by UTC date.
Nearby
Alerts in force nowTornadoes on recordForecastThe radar archive20172019
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.