Alert archive / Mississippi / Harrison County
Weather alerts in Harrison County, Mississippi, 2022
134 weather alerts in 2022, from the National Weather Service and the Storm Prediction Center. An alert counts here when it covered this county.
Harrison County and its neighbors
Each county as a circle sized by its count in 2022. Tap one for its archive.
- Alerts
- 134
- Warnings
- 32
- Watches
- 14
- Advisories
- 15
- Busiest month
- May22 alerts
- Busiest day
- December 14, 20228 alerts
Over time
By month
Warning verification
How often warnings here had a storm report inside them, and how much warning the reports had.
1 of 3 tornado warnings covering Harrison County in 2022 had a tornado report inside them; 1 of 1 tornado reports fell inside a warning, on average 10 minutes after it went out.
Harrison County, 2022
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| Tornado warnings | 3 | 1 | 67% | 1 | 100% | 10 min |
| Severe thunderstorm warnings | 12 | 5 | 58% | 23 | 74% | 27 min |
| Flash flood warnings | 4 | 3 | 25% | 6 | 100% | 48 min |
Each office's whole area, 2022
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| NWS New Orleans, LA: tornado warnings | 67 | 16 | 76% | 38 | 89% | 12 min |
| NWS New Orleans, LA: severe thunderstorm warnings | 121 | 31 | 74% | 105 | 62% | 17 min |
| NWS New Orleans, LA: flash flood warnings | 83 | 33 | 60% | 75 | 88% | 59 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, 4:56 PM CST | Mesoscale Discussion | SPC | 2 hr |
| Feb 2, 1:20 PM CST | Areal Flood Advisory | LIX | 3 hr |
| Feb 3, 9:53 AM CST | Mesoscale Discussion | SPC | 2 hr |
| Feb 3, 11:40 AM CST | Tornado Watch | SPC | 8 hr |
| Feb 3, 3:04 PM CST | Special Weather Statement | LIX | 26 min |
| Feb 3, 4:15 PM CST | Special Weather Statement | LIX | 30 min |
| Feb 3, 6:55 PM CST | River Flood Warning | LIX | 66 hr |
| Feb 3, 6:59 PM CST | River Flood Warning | LIX | 63 hr |
| Feb 14, 2:30 PM CST | Red Flag Warning | LIX | 28 hr |
| Mar 8, 11:10 PM CST | Special Weather Statement | LIX | 35 min |
| Mar 11, 5:06 PM CST | Mesoscale Discussion | SPC | 2 hr |
| Mar 15, 5:02 AM CDT | Mesoscale Discussion | SPC | 2 hr |
| Mar 15, 6:54 AM CDT | Special Weather Statement | LIX | 66 min |
| Mar 15, 7:50 AM CDT | Special Weather Statement | LIX | 85 min |
| Mar 18, 3:55 AM CDT | Tornado Watch | SPC | 8 hr |
| Mar 18, 7:16 AM CDT | Mesoscale Discussion | SPC | 89 min |
| Mar 22, 10:40 AM CDT | Tornado Watch | SPC | 8 hr |
| Mar 22, 3:05 PM CDT | Mesoscale Discussion | SPC | 115 min |
| Mar 22, 4:37 PM CDT | Special Weather Statement | LIX | 38 min |
| Mar 22, 5:33 PM CDT | Mesoscale Discussion | SPC | 87 min |
| Mar 22, 7:00 PM CDT | Tornado Watch | SPC | 4 hr |
| Mar 22, 7:15 PM CDT | Mesoscale Discussion | SPC | 60 min |
| Mar 22, 9:40 PM CDT | Mesoscale Discussion | SPC | 2 hr |
| Mar 22, 9:44 PM CDT | Special Weather Statement | LIX | 31 min |
| Mar 30, 3:39 PM CDT | Mesoscale Discussion | SPC | 2 hr |
| Mar 30, 6:31 PM CDT | Mesoscale Discussion | SPC | 119 min |
| Mar 30, 6:39 PM CDT | Tornado Watch | SPC | 9 hr |
| Mar 30, 8:41 PM CDT | Special Weather Statement | LIX | 94 min |
| Mar 30, 9:02 PM CDT | Severe Thunderstorm Warning | LIX | 43 min |
| Apr 5, 6:27 AM CDT | Mesoscale Discussion | SPC | 3 hr |
| Apr 5, 6:51 AM CDT | Tornado Watch | SPC | 8 hr |
| Apr 7, 7:24 PM CDT | Red Flag Warning | LIX | 24 hr |
| Apr 13, 8:02 PM CDT | Tornado Watch | SPC | 4 hr |
| Apr 13, 9:38 PM CDT | Mesoscale Discussion | SPC | 97 min |
| Apr 13, 11:21 PM CDT | Special Weather Statement | LIX | 54 min |
| Apr 14, 12:15 AM CDT | Special Weather Statement | LIX | 30 min |
| Apr 16, 4:33 PM CDT | Mesoscale Discussion | SPC | 2 hr |
| Apr 16, 6:23 PM CDT | Special Weather Statement | LIX | 82 min |
| Apr 17, 6:55 PM CDT | Severe Thunderstorm Watch | SPC | 5 hr |
| Apr 17, 8:01 PM CDT | Mesoscale Discussion | SPC | 89 min |
| Apr 17, 9:37 PM CDT | Special Weather Statement | LIX | 53 min |
| Apr 17, 10:09 PM CDT | Mesoscale Discussion | SPC | 96 min |
| Apr 17, 10:48 PM CDT | Severe Thunderstorm Warning | LIX | 42 min |
| May 6, 2:06 AM CDT | Special Weather Statement | LIX | 84 min |
| May 6, 2:12 AM CDT | Mesoscale Discussion | SPC | 2 hr |
| May 14, 6:55 PM CDT | Special Weather Statement | LIX | 35 min |
| May 14, 7:29 PM CDT | Special Weather Statement | LIX | 61 min |
| May 14, 7:32 PM CDT | Severe Thunderstorm Warning | LIX | 39 min |
| May 15, 6:09 PM CDT | Special Weather Statement | LIX | 66 min |
| May 15, 6:25 PM CDT | Severe Thunderstorm Warning | LIX | 65 min |
| May 15, 8:06 PM CDT | Special Weather Statement | LIX | 24 min |
| May 16, 12:02 AM CDT | Special Weather Statement | LIX | 88 min |
| May 23, 8:24 PM CDT | Special Weather Statement | LIX | 36 min |
| May 23, 9:36 PM CDT | Areal Flood Advisory | LIX | 3 hr |
| May 24, 6:02 AM CDT | Areal Flood Advisory | LIX | 43 min |
| May 25, 8:57 AM CDT | River Flood Warning | LIX | 3 days |
| May 25, 8:57 AM CDT | River Flood Warning | LIX | 4 days |
| May 25, 9:23 AM CDT | Mesoscale Discussion | SPC | 97 min |
| May 25, 2:43 PM CDT | Tornado Warning | LIX | 34 min |
| May 25, 3:04 PM CDT | Special Weather Statement | LIX | 56 min |
| May 26, 5:04 AM CDT | Mesoscale Discussion | SPC | 2 hr |
| May 26, 5:17 AM CDT | Special Weather Statement | LIX | 28 min |
| May 26, 6:48 AM CDT | Special Weather Statement | LIX | 42 min |
| May 26, 7:06 AM CDT | Severe Thunderstorm Warning | LIX | 28 min |
| May 30, 3:16 PM CDT | Special Weather Statement | LIX | 29 min |
| Jun 1, 2:37 PM CDT | Special Weather Statement | LIX | 53 min |
| Jun 9, 1:21 PM CDT | Mesoscale Discussion | SPC | 114 min |
| Jun 9, 3:58 PM CDT | Special Weather Statement | LIX | 17 min |
| Jun 10, 10:49 AM CDT | Special Weather Statement | LIX | 41 min |
| Jun 10, 1:06 PM CDT | Mesoscale Discussion | SPC | 84 min |
| Jun 10, 1:39 PM CDT | Severe Thunderstorm Watch | SPC | 5 hr |
| Jun 18, 6:09 PM CDT | Severe Thunderstorm Warning | LIX | 17 min |
| Jun 25, 4:02 PM CDT | Special Weather Statement | LIX | 28 min |
| Jun 30, 2:55 AM CDT | Areal Flood Advisory | LIX | 3 hr |
| Jun 30, 4:29 AM CDT | Flash Flood Warning | LIX | 3 hr |
| Jul 3, 2:21 PM CDT | Special Weather Statement | LIX | 24 min |
| Jul 4, 2:06 PM CDT | Areal Flood Advisory | LIX | 114 min |
| Jul 10, 12:14 AM CDT | Special Weather Statement | LIX | 61 min |
| Jul 13, 8:59 PM CDT | Special Weather Statement | LIX | 61 min |
| Jul 16, 2:27 PM CDT | Special Weather Statement | LIX | 33 min |
| Jul 22, 2:04 AM CDT | Special Weather Statement | LIX | 26 min |
| Aug 1, 2:51 PM CDT | Special Weather Statement | LIX | 39 min |
| Aug 4, 6:58 AM CDT | Areal Flood Advisory | LIX | 62 min |
| Aug 22, 6:42 PM CDT | Special Weather Statement | LIX | 78 min |
| Aug 23, 6:12 PM CDT | Special Weather Statement | LIX | 48 min |
| Aug 24, 9:48 AM CDT | River Flood Warning | LIX | 4 days |
| Aug 24, 1:01 PM CDT | Areal Flood Advisory | LIX | 90 min |
| Aug 25, 11:02 AM CDT | Areal Flood Advisory | LIX | 3 hr |
| Aug 25, 11:55 AM CDT | Flash Flood Warning | LIX | 3 hr |
| Aug 25, 12:49 PM CDT | Areal Flood Advisory | LIX | 3 hr |
| Aug 25, 1:33 PM CDT | Flash Flood Warning | LIX | 3 hr |
| Aug 25, 2:18 PM CDT | Areal Flood Advisory | LIX | 3 hr |
| Aug 25, 2:56 PM CDT | River Flood Warning | LIX | 44 hr |
| Aug 25, 3:46 PM CDT | River Flood Warning | LIX | 48 hr |
| Aug 30, 4:33 PM CDT | Special Weather Statement | LIX | 42 min |
| Sep 3, 3:40 PM CDT | Areal Flood Advisory | LIX | 3 hr |
| Sep 7, 3:06 PM CDT | Special Weather Statement | LIX | 54 min |
| Sep 26, 3:19 PM CDT | Fire Weather Watch | LIX | 23 hr |
| Sep 26, 3:19 PM CDT | Red Flag Warning | LIX | 28 hr |
| Sep 27, 1:51 PM CDT | Fire Weather Watch | LIX | 38 hr |
| Sep 27, 1:51 PM CDT | Red Flag Warning | LIX | 29 hr |
| Sep 29, 3:41 AM CDT | Red Flag Warning | LIX | 14 hr |
| Oct 12, 6:55 AM CDT | Special Weather Statement | LIX | 35 min |
| Oct 12, 7:55 AM CDT | Special Weather Statement | LIX | 35 min |
| Oct 16, 2:03 PM CDT | Fire Weather Watch | LIX | 24 hr |
| Oct 17, 2:22 PM CDT | Red Flag Warning | LIX | 29 hr |
| Oct 29, 12:11 PM CDT | Mesoscale Discussion | SPC | 64 min |
| Oct 29, 12:26 PM CDT | Tornado Watch | SPC | 9 hr |
| Oct 29, 3:28 PM CDT | Mesoscale Discussion | SPC | 92 min |
| Oct 29, 5:23 PM CDT | Mesoscale Discussion | SPC | 97 min |
| Nov 5, 11:21 AM CDT | Severe Thunderstorm Warning | LIX | 39 min |
| Nov 5, 11:45 AM CDT | Special Weather Statement | LIX | 30 min |
| Nov 5, 12:12 PM CDT | Special Weather Statement | LIX | 33 min |
| Nov 14, 9:00 PM CST | Special Weather Statement | LIX | 45 min |
| Nov 26, 4:28 PM CST | Special Weather Statement | LIX | 62 min |
| Nov 26, 5:09 PM CST | Severe Thunderstorm Warning | LIX | 36 min |
| Nov 30, 4:34 AM CST | Special Weather Statement | LIX | 56 min |
| Nov 30, 5:31 AM CST | Areal Flood Advisory | LIX | 3 hr |
| Dec 14, 12:22 PM CST | Tornado Watch | SPC | 10 hr |
| Dec 14, 2:53 PM CST | Mesoscale Discussion | SPC | 97 min |
| Dec 14, 3:38 PM CST | Severe Thunderstorm Warning | LIX | 52 min |
| Dec 14, 4:35 PM CST | Mesoscale Discussion | SPC | 115 min |
| Dec 14, 4:57 PM CST | Severe Thunderstorm Warning | LIX | 48 min |
| Dec 14, 5:00 PM CST | Tornado Warning | LIX | 45 min |
| Dec 14, 5:21 PM CST | Areal Flood Advisory | LIX | 112 min |
| Dec 14, 5:42 PM CST | Tornado Warning | LIX | 31 min |
| Dec 30, 7:50 AM CST | Areal Flood Advisory | LIX | 5 hr |
| Dec 30, 8:55 AM CST | Special Weather Statement | LIX | 65 min |
| Dec 30, 9:21 AM CST | Severe Thunderstorm Warning | LIX | 39 min |
| Dec 30, 9:39 AM CST | Mesoscale Discussion | SPC | 3 hr |
| Dec 30, 9:54 AM CST | Special Weather Statement | LIX | 66 min |
| Dec 30, 10:08 AM CST | Severe Thunderstorm Warning | LIX | 52 min |
| Dec 30, 10:36 AM CST | Areal Flood Advisory | LIX | 3 hr |
| Dec 30, 12:00 PM CST | Flash Flood Warning | LIX | 3 hr |
By product
Every kind of product issued here, grouped by hazard. Each opens the same place narrowed to that product.
The busiest days
Days with the most alerts issued, by UTC date.
Nearby
Alerts in force nowTornadoes on recordForecastThe radar archive20212023
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.