Alert archive / Mississippi / Grenada County
Weather alerts in Grenada County, Mississippi, 2024
103 weather alerts in 2024, from the National Weather Service and the Storm Prediction Center. An alert counts here when it covered this county.
Grenada County and its neighbors
Each county as a circle sized by its count in 2024. Tap one for its archive.
- Alerts
- 103
- Warnings
- 27
- Watches
- 13
- Advisories
- 33
- Busiest month
- January20 alerts
- Busiest day
- January 12, 20246 alerts
Over time
By month
Warning verification
How often warnings here had a storm report inside them, and how much warning the reports had.
Grenada County, 2024
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| Tornado warnings | 0 | 0 | ||||
| Severe thunderstorm warnings | 8 | 6 | 25% | 6 | 100% | 28 min |
| Flash flood warnings | 2 | 1 | 50% | 2 | 0% |
Each office's whole area, 2024
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| NWS Jackson, MS: tornado warnings | 51 | 21 | 59% | 75 | 76% | 22 min |
| NWS Jackson, MS: severe thunderstorm warnings | 300 | 174 | 42% | 631 | 76% | 27 min |
| NWS Jackson, MS: flash flood warnings | 71 | 38 | 46% | 114 | 85% | 127 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 7, 2:34 PM CST | Wind Advisory | JAN | 51 hr |
| Jan 11, 3:31 AM CST | Wind Advisory | JAN | 38 hr |
| Jan 12, 3:33 AM CST | Mesoscale Discussion | SPC | 87 min |
| Jan 12, 3:57 AM CST | Tornado Watch | SPC | 7 hr |
| Jan 12, 6:50 AM CST | Severe Thunderstorm Warning | JAN | 40 min |
| Jan 12, 7:37 AM CST | Severe Thunderstorm Warning | JAN | 68 min |
| Jan 12, 7:55 AM CST | Mesoscale Discussion | SPC | 95 min |
| Jan 12, 2:37 PM CST | Winter Storm Watch | JAN | 44 hr |
| Jan 13, 1:54 PM CST | Winter Storm Warning | JAN | 63 hr |
| Jan 14, 6:48 PM CST | Mesoscale Discussion | SPC | 5 hr |
| Jan 15, 3:39 AM CST | Wind Chill Advisory | JAN | 32 hr |
| Jan 15, 3:50 AM CST | Hard Freeze Warning | JAN | 54 hr |
| Jan 15, 7:45 AM CST | Mesoscale Discussion | SPC | 4 hr |
| Jan 15, 11:17 AM CST | Mesoscale Discussion | SPC | 4 hr |
| Jan 18, 3:39 AM CST | Hard Freeze Warning | JAN | 3 days |
| Jan 19, 3:56 AM CST | Wind Chill Advisory | JAN | 32 hr |
| Jan 20, 2:48 AM CST | Wind Chill Advisory | JAN | 30 hr |
| Jan 23, 3:37 AM CST | Flood Watch | JAN | 57 hr |
| Jan 25, 3:27 AM CST | Dense Fog Advisory | JAN | 7 hr |
| Jan 25, 10:24 PM CST | Dense Fog Advisory | JAN | 14 hr |
| Feb 11, 11:37 AM CST | Severe Thunderstorm Watch | SPC | 6 hr |
| Feb 26, 2:17 PM CST | Wind Advisory | JAN | 40 hr |
| Mar 1, 8:00 PM CST | Dense Fog Advisory | JAN | 14 hr |
| Mar 5, 9:44 PM CST | Dense Fog Advisory | JAN | 12 hr |
| Mar 7, 2:12 AM CST | Dense Fog Advisory | JAN | 8 hr |
| Mar 14, 3:16 PM CDT | Mesoscale Discussion | SPC | 119 min |
| Mar 15, 2:57 AM CDT | Special Weather Statement | JAN | 63 min |
| Mar 17, 2:32 AM CDT | Freeze Watch | JAN | 13 hr |
| Mar 17, 3:10 PM CDT | Freeze Warning | JAN | 42 hr |
| Mar 24, 3:05 AM CDT | Wind Advisory | JAN | 46 hr |
| Mar 25, 8:33 PM CDT | Special Weather Statement | JAN | 57 min |
| Apr 8, 9:56 AM CDT | Flood Watch | JAN | 57 hr |
| Apr 8, 11:19 AM CDT | Severe Thunderstorm Warning | JAN | 56 min |
| Apr 8, 12:13 PM CDT | Special Weather Statement | JAN | 32 min |
| Apr 8, 12:53 PM CDT | Flash Flood Warning | JAN | 52 min |
| Apr 10, 8:04 AM CDT | Flash Flood Warning | JAN | 8 hr |
| Apr 10, 1:39 PM CDT | Special Weather Statement | JAN | 81 min |
| Apr 10, 3:13 PM CDT | Wind Advisory | JAN | 28 hr |
| Apr 30, 4:46 AM CDT | Dense Fog Advisory | JAN | 4 hr |
| May 3, 8:58 PM CDT | Dense Fog Advisory | JAN | 12 hr |
| May 5, 1:16 PM CDT | Mesoscale Discussion | SPC | 119 min |
| May 5, 10:19 PM CDT | Mesoscale Discussion | SPC | 86 min |
| May 9, 6:24 PM CDT | Mesoscale Discussion | SPC | 96 min |
| May 14, 4:30 PM CDT | Special Weather Statement | JAN | 60 min |
| May 24, 12:17 PM CDT | Mesoscale Discussion | SPC | 88 min |
| May 24, 3:58 PM CDT | Mesoscale Discussion | SPC | 92 min |
| May 24, 6:17 PM CDT | Severe Thunderstorm Watch | SPC | 5 hr |
| May 27, 12:52 AM CDT | Mesoscale Discussion | SPC | 113 min |
| May 27, 1:10 AM CDT | Tornado Watch | SPC | 5 hr |
| May 27, 2:47 AM CDT | Mesoscale Discussion | SPC | 118 min |
| Jun 3, 6:58 PM CDT | Severe Thunderstorm Watch | SPC | 7 hr |
| Jun 3, 9:23 PM CDT | Mesoscale Discussion | SPC | 2 hr |
| Jun 9, 3:47 PM CDT | Mesoscale Discussion | SPC | 118 min |
| Jun 9, 3:59 PM CDT | Severe Thunderstorm Watch | SPC | 6 hr |
| Jun 9, 7:19 PM CDT | Mesoscale Discussion | SPC | 86 min |
| Jun 9, 9:16 PM CDT | Mesoscale Discussion | SPC | 89 min |
| Jun 23, 1:37 PM CDT | Heat Advisory | JAN | 24 hr |
| Jun 24, 2:25 AM CDT | Heat Advisory | JAN | 42 hr |
| Jun 24, 1:34 PM CDT | Excessive Heat Warning | JAN | 6 hr |
| Jun 25, 2:34 AM CDT | Excessive Heat Warning | JAN | 17 hr |
| Jun 25, 9:58 PM CDT | Heat Advisory | JAN | 21 hr |
| Jun 26, 12:45 PM CDT | Mesoscale Discussion | SPC | 2 hr |
| Jun 26, 2:39 PM CDT | Severe Thunderstorm Warning | JAN | 81 min |
| Jun 26, 2:51 PM CDT | Severe Thunderstorm Watch | SPC | 4 hr |
| Jun 26, 2:53 PM CDT | Severe Thunderstorm Warning | JAN | 97 min |
| Jun 28, 1:34 PM CDT | Excessive Heat Warning | JAN | 54 hr |
| Jul 2, 2:22 PM CDT | Excessive Heat Warning | JAN | 30 hr |
| Jul 3, 3:35 AM CDT | Excessive Heat Warning | JAN | 40 hr |
| Jul 5, 2:11 AM CDT | Heat Advisory | JAN | 17 hr |
| Jul 8, 2:23 AM CDT | Heat Advisory | JAN | 18 hr |
| Jul 14, 1:56 PM CDT | Heat Advisory | JAN | 29 hr |
| Jul 15, 2:10 PM CDT | Heat Advisory | JAN | 30 hr |
| Jul 16, 1:06 PM CDT | Heat Advisory | JAN | 30 hr |
| Jul 28, 1:18 PM CDT | Heat Advisory | JAN | 30 hr |
| Jul 29, 1:33 PM CDT | Excessive Heat Warning | JAN | 29 hr |
| Jul 30, 2:42 PM CDT | Excessive Heat Warning | JAN | 28 hr |
| Jul 31, 2:13 PM CDT | Excessive Heat Warning | JAN | 29 hr |
| Aug 1, 4:02 AM CDT | Excessive Heat Warning | JAN | 39 hr |
| Aug 4, 1:11 PM CDT | Heat Advisory | JAN | 30 hr |
| Aug 6, 1:12 PM CDT | Heat Advisory | JAN | 30 hr |
| Aug 14, 2:35 PM CDT | Heat Advisory | JAN | 3 days |
| Aug 15, 3:31 AM CDT | Excessive Heat Warning | JAN | 64 hr |
| Aug 17, 1:48 PM CDT | Excessive Heat Warning | JAN | 30 hr |
| Aug 18, 2:53 PM CDT | Mesoscale Discussion | SPC | 67 min |
| Aug 29, 2:39 AM CDT | Heat Advisory | JAN | 15 hr |
| Aug 29, 5:00 PM CDT | Special Weather Statement | JAN | 45 min |
| Aug 29, 5:20 PM CDT | Severe Thunderstorm Warning | JAN | 40 min |
| Aug 29, 6:00 PM CDT | Special Weather Statement | JAN | 45 min |
| Sep 10, 2:18 PM CDT | Flood Watch | JAN | 47 hr |
| Sep 11, 2:35 PM CDT | Wind Advisory | JAN | 28 hr |
| Sep 24, 6:09 PM CDT | Severe Thunderstorm Warning | JAN | 25 min |
| Sep 30, 2:33 AM CDT | Dense Fog Advisory | JAN | 7 hr |
| Nov 22, 2:23 AM CST | Freeze Warning | JAN | 30 hr |
| Nov 27, 10:13 PM CST | Special Weather Statement | JAN | 47 min |
| Nov 28, 2:05 PM CST | Freeze Warning | JAN | 42 hr |
| Dec 16, 11:20 PM CST | Special Weather Statement | JAN | 40 min |
| Dec 16, 11:52 PM CST | Dense Fog Advisory | JAN | 9 hr |
| Dec 27, 9:11 PM CST | Dense Fog Advisory | JAN | 12 hr |
| Dec 28, 11:15 AM CST | Mesoscale Discussion | SPC | 60 min |
| Dec 28, 2:17 PM CST | Tornado Watch | SPC | 8 hr |
| Dec 28, 6:04 PM CST | Mesoscale Discussion | SPC | 86 min |
| Dec 28, 7:31 PM CST | Severe Thunderstorm Warning | JAN | 59 min |
| Dec 29, 9:01 PM CST | Dense Fog Advisory | JAN | 13 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 | 8 |
| Severe Thunderstorm Watch | 5 |
| Tornado Watch | 3 |
| Mesoscale Discussion | 21 |
| Special Weather Statement | 9 |
| Flooding | |
| Flash Flood Warning | 2 |
| Flood Watch | 3 |
| Winter | |
| Winter Storm Warning | 1 |
| Winter Storm Watch | 1 |
| Heat | |
| Excessive Heat Warning | 11 |
| Heat Advisory | 13 |
| Cold | |
| Freeze Warning | 3 |
| Hard Freeze Warning | 2 |
| Freeze Watch | 1 |
| Wind Chill Advisory | 3 |
| Wind and dust | |
| Wind Advisory | 6 |
| Fog and smoke | |
| Dense Fog Advisory | 11 |
The busiest days
Days with the most alerts issued, by UTC date.
Nearby
Alerts in force nowTornadoes on recordForecastThe radar archive20232025
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.