Alert archive / Mississippi / Grenada County
Weather alerts in Grenada County, Mississippi, 2023
156 weather alerts in 2023, 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 2023. Tap one for its archive.
- Alerts
- 156
- Warnings
- 26
- Watches
- 32
- Advisories
- 32
- Busiest month
- June35 alerts
- Busiest day
- June 14, 20236 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, 2023
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| Tornado warnings | 0 | 0 | ||||
| Severe thunderstorm warnings | 12 | 9 | 25% | 10 | 90% | 29 min |
| Flash flood warnings | 0 | 0 |
Each office's whole area, 2023
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| NWS Jackson, MS: tornado warnings | 67 | 31 | 54% | 88 | 80% | 19 min |
| NWS Jackson, MS: severe thunderstorm warnings | 595 | 288 | 52% | 926 | 76% | 26 min |
| NWS Jackson, MS: flash flood warnings | 55 | 27 | 51% | 86 | 83% | 85 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 3, 1:36 AM CST | Mesoscale Discussion | SPC | 114 min |
| Jan 3, 2:56 AM CST | Tornado Watch | SPC | 8 hr |
| Jan 3, 7:56 AM CST | Mesoscale Discussion | SPC | 2 hr |
| Jan 3, 9:42 AM CST | Severe Thunderstorm Warning | JAN | 63 min |
| Jan 18, 12:30 PM CST | Mesoscale Discussion | SPC | 90 min |
| Jan 18, 2:34 PM CST | Tornado Watch | SPC | 7 hr |
| Jan 18, 5:47 PM CST | Mesoscale Discussion | SPC | 118 min |
| Jan 18, 7:11 PM CST | Severe Thunderstorm Warning | JAN | 64 min |
| Jan 23, 2:39 PM CST | Wind Advisory | JAN | 36 hr |
| Jan 31, 3:50 AM CST | Winter Weather Advisory | JAN | 32 hr |
| Feb 8, 3:40 AM CST | Wind Advisory | JAN | 25 hr |
| Feb 8, 4:52 PM CST | Tornado Watch | SPC | 6 hr |
| Feb 8, 6:09 PM CST | Special Weather Statement | JAN | 36 min |
| Feb 8, 6:56 PM CST | Mesoscale Discussion | SPC | 64 min |
| Feb 13, 2:07 PM CST | Wind Advisory | JAN | 29 hr |
| Feb 15, 5:41 PM CST | Mesoscale Discussion | SPC | 3 hr |
| Feb 15, 9:22 PM CST | Tornado Watch | SPC | 8 hr |
| Feb 16, 9:59 AM CST | Tornado Watch | SPC | 9 hr |
| Feb 21, 1:21 PM CST | Wind Advisory | JAN | 29 hr |
| Feb 26, 4:46 AM CST | Wind Advisory | JAN | 37 hr |
| Feb 26, 6:02 AM CST | Dense Fog Advisory | JAN | 3 hr |
| Mar 1, 2:22 PM CST | Mesoscale Discussion | SPC | 113 min |
| Mar 1, 3:31 PM CST | Tornado Watch | SPC | 8 hr |
| Mar 1, 6:21 PM CST | Mesoscale Discussion | SPC | 114 min |
| Mar 1, 8:44 PM CST | Mesoscale Discussion | SPC | 61 min |
| Mar 1, 10:46 PM CST | Special Weather Statement | JAN | 29 min |
| Mar 2, 4:03 AM CST | Wind Advisory | JAN | 38 hr |
| Mar 2, 11:51 PM CST | Tornado Watch | SPC | 8 hr |
| Mar 3, 3:23 AM CST | High Wind Warning | JAN | 9 hr |
| Mar 3, 3:23 AM CST | Wind Advisory | JAN | 15 hr |
| Mar 11, 8:40 PM CST | Mesoscale Discussion | SPC | 2 hr |
| Mar 11, 11:51 PM CST | Mesoscale Discussion | SPC | 84 min |
| Mar 12, 12:04 AM CST | Severe Thunderstorm Watch | SPC | 4 hr |
| Mar 12, 2:28 PM CDT | Freeze Watch | JAN | 37 hr |
| Mar 13, 3:30 AM CDT | Freeze Warning | JAN | 30 hr |
| Mar 14, 3:25 AM CDT | Freeze Warning | JAN | 30 hr |
| Mar 17, 3:31 AM CDT | Freeze Watch | JAN | 24 hr |
| Mar 18, 3:14 AM CDT | Freeze Watch | JAN | 11 hr |
| Mar 18, 3:14 AM CDT | Freeze Warning | JAN | 31 hr |
| Mar 18, 2:09 PM CDT | Freeze Warning | JAN | 44 hr |
| Mar 19, 1:39 PM CDT | Freeze Watch | JAN | 25 hr |
| Mar 24, 1:46 PM CDT | Wind Advisory | JAN | 10 hr |
| Mar 24, 5:20 PM CDT | Tornado Watch | SPC | 8 hr |
| Mar 30, 4:11 AM CDT | Wind Advisory | JAN | 42 hr |
| Mar 31, 5:28 PM CDT | Mesoscale Discussion | SPC | 92 min |
| Mar 31, 7:42 PM CDT | Mesoscale Discussion | SPC | 2 hr |
| Mar 31, 8:24 PM CDT | Tornado Watch | SPC | 8 hr |
| Mar 31, 10:23 PM CDT | Mesoscale Discussion | SPC | 2 hr |
| Apr 1, 12:35 AM CDT | Special Weather Statement | JAN | 25 min |
| Apr 1, 2:03 AM CDT | Mesoscale Discussion | SPC | 87 min |
| Apr 5, 2:17 PM CDT | Mesoscale Discussion | SPC | 88 min |
| Apr 5, 2:39 PM CDT | Severe Thunderstorm Watch | SPC | 4 hr |
| Apr 5, 3:35 PM CDT | Severe Thunderstorm Warning | JAN | 40 min |
| Apr 15, 6:28 PM CDT | Mesoscale Discussion | SPC | 92 min |
| Apr 15, 6:48 PM CDT | Severe Thunderstorm Watch | SPC | 7 hr |
| Apr 15, 9:31 PM CDT | Mesoscale Discussion | SPC | 59 min |
| Apr 15, 11:52 PM CDT | Mesoscale Discussion | SPC | 83 min |
| Apr 21, 1:35 PM CDT | Mesoscale Discussion | SPC | 115 min |
| Apr 21, 3:20 PM CDT | Special Weather Statement | JAN | 55 min |
| Apr 27, 3:50 PM CDT | Mesoscale Discussion | SPC | 115 min |
| Apr 27, 5:12 PM CDT | Severe Thunderstorm Watch | SPC | 6 hr |
| Apr 27, 6:57 PM CDT | Mesoscale Discussion | SPC | 2 hr |
| Apr 27, 9:08 PM CDT | Mesoscale Discussion | SPC | 2 hr |
| Apr 27, 10:26 PM CDT | Special Weather Statement | JAN | 64 min |
| May 7, 5:01 PM CDT | Special Weather Statement | JAN | 59 min |
| May 7, 5:08 PM CDT | Mesoscale Discussion | SPC | 97 min |
| May 7, 6:18 PM CDT | Special Weather Statement | JAN | 57 min |
| May 11, 3:22 PM CDT | Severe Thunderstorm Warning | JAN | 68 min |
| May 14, 3:38 PM CDT | Special Weather Statement | JAN | 52 min |
| May 18, 1:00 PM CDT | Mesoscale Discussion | SPC | 2 hr |
| Jun 10, 3:09 PM CDT | Mesoscale Discussion | SPC | 2 hr |
| Jun 10, 4:16 PM CDT | Special Weather Statement | JAN | 44 min |
| Jun 10, 4:17 PM CDT | Severe Thunderstorm Watch | SPC | 5 hr |
| Jun 10, 4:57 PM CDT | Special Weather Statement | JAN | 48 min |
| Jun 10, 6:19 PM CDT | Mesoscale Discussion | SPC | 86 min |
| Jun 11, 5:17 PM CDT | Mesoscale Discussion | SPC | 58 min |
| Jun 11, 5:57 PM CDT | Severe Thunderstorm Watch | SPC | 4 hr |
| Jun 11, 7:42 PM CDT | Mesoscale Discussion | SPC | 93 min |
| Jun 14, 7:22 AM CDT | Mesoscale Discussion | SPC | 83 min |
| Jun 14, 8:10 AM CDT | Severe Thunderstorm Watch | SPC | 6 hr |
| Jun 14, 10:16 AM CDT | Severe Thunderstorm Warning | JAN | 59 min |
| Jun 14, 11:13 AM CDT | Severe Thunderstorm Warning | JAN | 62 min |
| Jun 14, 1:46 PM CDT | Severe Thunderstorm Watch | SPC | 6 hr |
| Jun 14, 3:25 PM CDT | Mesoscale Discussion | SPC | 95 min |
| Jun 14, 7:10 PM CDT | Mesoscale Discussion | SPC | 65 min |
| Jun 14, 7:33 PM CDT | Severe Thunderstorm Watch | SPC | 8 hr |
| Jun 15, 2:17 AM CDT | Special Weather Statement | JAN | 43 min |
| Jun 15, 2:31 AM CDT | Severe Thunderstorm Warning | JAN | 44 min |
| Jun 16, 4:52 PM CDT | Severe Thunderstorm Watch | SPC | 9 hr |
| Jun 18, 2:27 AM CDT | Severe Thunderstorm Watch | SPC | 10 hr |
| Jun 18, 1:45 PM CDT | Flood Watch | JAN | 17 hr |
| Jun 18, 5:31 PM CDT | Mesoscale Discussion | SPC | 119 min |
| Jun 18, 6:52 PM CDT | Tornado Watch | SPC | 6 hr |
| Jun 18, 8:05 PM CDT | Severe Thunderstorm Warning | JAN | 70 min |
| Jun 24, 3:34 AM CDT | Heat Advisory | JAN | 40 hr |
| Jun 25, 2:20 PM CDT | Heat Advisory | JAN | 30 hr |
| Jun 25, 6:15 PM CDT | Mesoscale Discussion | SPC | 90 min |
| Jun 25, 6:51 PM CDT | Severe Thunderstorm Watch | SPC | 7 hr |
| Jun 25, 8:15 PM CDT | Severe Thunderstorm Warning | JAN | 79 min |
| Jun 25, 8:49 PM CDT | Mesoscale Discussion | SPC | 86 min |
| Jun 27, 4:28 AM CDT | Excessive Heat Watch | JAN | 24 hr |
| Jun 28, 4:23 AM CDT | Excessive Heat Warning | JAN | 41 hr |
| Jun 28, 4:23 AM CDT | Heat Advisory | JAN | 17 hr |
| Jun 29, 3:51 AM CDT | Excessive Heat Warning | JAN | 41 hr |
| Jun 29, 3:05 PM CDT | Excessive Heat Warning | JAN | 54 hr |
| Jul 1, 3:09 AM CDT | Heat Advisory | JAN | 42 hr |
| Jul 2, 10:16 AM CDT | Mesoscale Discussion | SPC | 89 min |
| Jul 2, 12:14 PM CDT | Severe Thunderstorm Watch | SPC | 8 hr |
| Jul 2, 1:36 PM CDT | Severe Thunderstorm Warning | JAN | 54 min |
| Jul 2, 2:20 PM CDT | Special Weather Statement | JAN | 40 min |
| Jul 3, 12:48 PM CDT | Mesoscale Discussion | SPC | 117 min |
| Jul 4, 1:22 PM CDT | Mesoscale Discussion | SPC | 113 min |
| Jul 4, 2:15 PM CDT | Special Weather Statement | JAN | 45 min |
| Jul 5, 9:46 PM CDT | Special Weather Statement | JAN | 44 min |
| Jul 8, 1:38 PM CDT | Mesoscale Discussion | SPC | 2 hr |
| Jul 9, 12:51 PM CDT | Mesoscale Discussion | SPC | 84 min |
| Jul 12, 2:53 PM CDT | Flood Watch | JAN | 24 hr |
| Jul 13, 3:21 PM CDT | Heat Advisory | JAN | 29 hr |
| Jul 14, 12:14 PM CDT | Mesoscale Discussion | SPC | 3 hr |
| Jul 14, 2:19 PM CDT | Heat Advisory | JAN | 30 hr |
| Jul 15, 2:31 AM CDT | Special Weather Statement | JAN | 59 min |
| Jul 15, 3:31 AM CDT | Special Weather Statement | JAN | 44 min |
| Jul 17, 1:57 PM CDT | Heat Advisory | JAN | 30 hr |
| Jul 18, 2:44 PM CDT | Excessive Heat Warning | JAN | 30 hr |
| Jul 18, 2:44 PM CDT | Heat Advisory | JAN | 30 hr |
| Jul 19, 2:28 PM CDT | Heat Advisory | JAN | 53 hr |
| Jul 27, 2:30 PM CDT | Heat Advisory | JAN | 30 hr |
| Jul 28, 1:33 PM CDT | Heat Advisory | JAN | 30 hr |
| Jul 29, 2:56 PM CDT | Heat Advisory | JAN | 29 hr |
| Jul 31, 2:30 PM CDT | Excessive Heat Warning | JAN | 7 days |
| Jul 31, 2:30 PM CDT | Heat Advisory | JAN | 4 days |
| Aug 4, 2:58 PM CDT | Heat Advisory | JAN | 24 hr |
| Aug 7, 1:21 PM CDT | Heat Advisory | JAN | 8 hr |
| Aug 8, 2:37 PM CDT | Heat Advisory | JAN | 45 hr |
| Aug 9, 3:54 AM CDT | Excessive Heat Warning | JAN | 6 days |
| Aug 10, 2:07 AM CDT | Special Weather Statement | JAN | 53 min |
| Aug 10, 3:24 PM CDT | Heat Advisory | JAN | 29 hr |
| Aug 10, 3:38 PM CDT | Mesoscale Discussion | SPC | 2 hr |
| Aug 15, 12:55 AM CDT | Special Weather Statement | JAN | 35 min |
| Aug 18, 2:56 PM CDT | Heat Advisory | JAN | 5 days |
| Aug 22, 3:26 AM CDT | Excessive Heat Warning | JAN | 5 days |
| Aug 26, 2:11 PM CDT | Heat Advisory | JAN | 31 hr |
| Sep 6, 8:43 AM CDT | Special Weather Statement | JAN | 47 min |
| Sep 6, 2:05 PM CDT | Mesoscale Discussion | SPC | 2 hr |
| Sep 6, 5:25 PM CDT | Severe Thunderstorm Watch | SPC | 6 hr |
| Sep 6, 7:38 PM CDT | Mesoscale Discussion | SPC | 97 min |
| Sep 6, 8:26 PM CDT | Severe Thunderstorm Warning | JAN | 49 min |
| Oct 30, 2:53 PM CDT | Freeze Warning | JAN | 42 hr |
| Nov 1, 3:25 AM CDT | Freeze Warning | JAN | 30 hr |
| Dec 1, 8:43 PM CST | Dense Fog Advisory | JAN | 8 hr |
| Dec 3, 1:15 AM CST | Dense Fog Advisory | JAN | 9 hr |
| Dec 9, 10:50 AM CST | Mesoscale Discussion | SPC | 115 min |
| Dec 9, 3:00 PM CST | Mesoscale Discussion | SPC | 2 hr |
| Dec 9, 3:56 PM CST | Tornado Watch | SPC | 8 hr |
| Dec 9, 5:32 PM CST | Severe Thunderstorm Warning | JAN | 47 min |
| Dec 9, 5:56 PM CST | Mesoscale Discussion | SPC | 94 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 | 12 |
| Severe Thunderstorm Watch | 14 |
| Tornado Watch | 11 |
| Mesoscale Discussion | 47 |
| Special Weather Statement | 19 |
| Flooding | |
| Flood Watch | 2 |
| Winter | |
| Winter Weather Advisory | 1 |
| Heat | |
| Excessive Heat Warning | 7 |
| Excessive Heat Watch | 1 |
| Heat Advisory | 19 |
| Cold | |
| Freeze Warning | 6 |
| Freeze Watch | 4 |
| Wind and dust | |
| High Wind Warning | 1 |
| Wind Advisory | 9 |
| Fog and smoke | |
| Dense Fog Advisory | 3 |
The busiest days
Days with the most alerts issued, by UTC date.
Nearby
Alerts in force nowTornadoes on recordForecastThe radar archive20222024
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.