Alert archive / Mississippi / Alcorn County
Weather alerts in Alcorn County, Mississippi, 2008
144 weather alerts in 2008, from the National Weather Service and the Storm Prediction Center. An alert counts here when it covered this county.
Alcorn County and its neighbors
Each county as a circle sized by its count in 2008. Tap one for its archive.
- Alerts
- 144
- Warnings
- 33
- Watches
- 21
- Advisories
- 44
- Busiest month
- May28 alerts
- Busiest day
- January 10, 20089 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 7 tornado warnings covering Alcorn County in 2008 had a tornado report inside them; 4 of 4 tornado reports fell inside a warning, on average 23 minutes after it went out.
Alcorn County, 2008
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| Tornado warnings | 7 | 4 | 43% | 4 | 100% | 23 min |
| Severe thunderstorm warnings | 12 | 6 | 50% | 6 | 33% | 8 min |
| Flash flood warnings | 6 | 4 | 33% | 1 | 100% | 22 min |
Each office's whole area, 2008
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| NWS Memphis, TN: tornado warnings | 147 | 50 | 66% | 97 | 97% | 22 min |
| NWS Memphis, TN: severe thunderstorm warnings | 419 | 196 | 53% | 381 | 69% | 20 min |
| NWS Memphis, TN: flash flood warnings | 155 | 76 | 51% | 124 | 83% | 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 1, 4:23 AM CST | Wind Advisory | MEG | 14 hr |
| Jan 7, 9:18 PM CST | Wind Advisory | MEG | 25 hr |
| Jan 8, 1:11 PM CST | Mesoscale Discussion | SPC | 2 hr |
| Jan 8, 1:26 PM CST | Tornado Watch | SPC | 8 hr |
| Jan 8, 4:03 PM CST | Mesoscale Discussion | SPC | 117 min |
| Jan 10, 7:17 AM CST | Mesoscale Discussion | SPC | 118 min |
| Jan 10, 7:46 AM CST | Tornado Watch | SPC | 8 hr |
| Jan 10, 9:23 AM CST | Mesoscale Discussion | SPC | 67 min |
| Jan 10, 12:09 PM CST | Mesoscale Discussion | SPC | 96 min |
| Jan 10, 12:22 PM CST | Tornado Warning | MEG | 38 min |
| Jan 10, 1:04 PM CST | Severe Thunderstorm Warning | MEG | 41 min |
| Jan 10, 1:08 PM CST | Flash Flood Warning | MEG | 2 hr |
| Jan 10, 1:25 PM CST | Flash Flood Warning | MEG | 2 hr |
| Jan 10, 1:42 PM CST | Mesoscale Discussion | SPC | 93 min |
| Jan 21, 3:01 PM CST | Winter Weather Advisory | MEG | 13 hr |
| Jan 25, 10:48 AM CST | Winter Weather Advisory | MEG | 11 hr |
| Jan 25, 12:24 PM CST | Mesoscale Discussion | SPC | 6 hr |
| Jan 26, 1:31 AM CST | Freezing Rain Advisory | MEG | 8 hr |
| Jan 26, 11:32 PM CST | Freezing Fog Advisory | MEG | 10 hr |
| Jan 28, 3:04 PM CST | Wind Advisory | MEG | 26 hr |
| Jan 29, 3:14 PM CST | High Wind Warning | MEG | 5 hr |
| Jan 29, 7:56 PM CST | Wind Advisory | MEG | 3 hr |
| Jan 30, 4:07 PM CST | Winter Weather Advisory | MEG | 32 hr |
| Feb 4, 2:53 PM CST | Wind Advisory | MEG | 33 hr |
| Feb 5, 12:11 PM CST | Mesoscale Discussion | SPC | 94 min |
| Feb 5, 3:09 PM CST | Tornado Watch | SPC | 9 hr |
| Feb 5, 5:15 PM CST | Mesoscale Discussion | SPC | 2 hr |
| Feb 5, 6:28 PM CST | Tornado Warning | MEG | 32 min |
| Feb 5, 6:55 PM CST | Tornado Warning | MEG | 35 min |
| Feb 5, 8:07 PM CST | Mesoscale Discussion | SPC | 83 min |
| Feb 5, 10:01 PM CST | Tornado Watch | SPC | 8 hr |
| Feb 5, 10:57 PM CST | Severe Thunderstorm Warning | MEG | 48 min |
| Feb 5, 11:28 PM CST | Severe Thunderstorm Warning | MEG | 62 min |
| Feb 12, 7:09 PM CST | Mesoscale Discussion | SPC | 6 hr |
| Feb 16, 1:37 PM CST | Wind Advisory | MEG | 28 hr |
| Feb 17, 4:19 AM CST | Mesoscale Discussion | SPC | 56 min |
| Feb 26, 3:30 AM CST | Wind Advisory | MEG | 15 hr |
| Feb 29, 9:22 PM CST | Dense Fog Advisory | MEG | 10 hr |
| Mar 3, 4:17 AM CST | Wind Advisory | MEG | 14 hr |
| Mar 6, 4:36 AM CST | Winter Storm Warning | MEG | 49 hr |
| Mar 6, 3:47 PM CST | Winter Weather Advisory | MEG | 38 hr |
| Mar 14, 1:34 AM CDT | Mesoscale Discussion | SPC | 86 min |
| Mar 14, 11:55 PM CDT | Severe Thunderstorm Watch | SPC | 7 hr |
| Mar 15, 2:12 AM CDT | Mesoscale Discussion | SPC | 93 min |
| Mar 15, 4:30 AM CDT | Mesoscale Discussion | SPC | 90 min |
| Mar 15, 5:10 AM CDT | Severe Thunderstorm Warning | MEG | 50 min |
| Mar 15, 5:53 AM CDT | Severe Thunderstorm Warning | MEG | 52 min |
| Mar 15, 6:41 AM CDT | Severe Thunderstorm Warning | MEG | 35 min |
| Mar 15, 10:23 AM CDT | Mesoscale Discussion | SPC | 67 min |
| Mar 18, 4:44 AM CDT | Wind Advisory | MEG | 26 hr |
| Mar 18, 10:51 PM CDT | Tornado Watch | SPC | 8 hr |
| Mar 19, 7:08 AM CDT | Mesoscale Discussion | SPC | 2 hr |
| Apr 3, 9:49 PM CDT | Mesoscale Discussion | SPC | 86 min |
| Apr 3, 11:19 PM CDT | Mesoscale Discussion | SPC | 86 min |
| Apr 4, 1:28 AM CDT | Mesoscale Discussion | SPC | 2 hr |
| Apr 4, 2:46 AM CDT | Severe Thunderstorm Watch | SPC | 8 hr |
| Apr 4, 5:16 AM CDT | Mesoscale Discussion | SPC | 89 min |
| Apr 4, 10:22 AM CDT | Flash Flood Warning | MEG | 6 hr |
| Apr 9, 4:59 AM CDT | Flash Flood Watch | MEG | 49 hr |
| Apr 10, 4:49 AM CDT | Wind Advisory | MEG | 17 hr |
| Apr 10, 7:48 PM CDT | Mesoscale Discussion | SPC | 57 min |
| Apr 10, 9:54 PM CDT | Mesoscale Discussion | SPC | 66 min |
| Apr 10, 11:34 PM CDT | Mesoscale Discussion | SPC | 56 min |
| Apr 11, 10:15 AM CDT | Tornado Watch | SPC | 5 hr |
| Apr 13, 3:44 AM CDT | Freeze Watch | MEG | 23 hr |
| Apr 14, 3:13 AM CDT | Freeze Warning | MEG | 30 hr |
| Apr 18, 5:08 PM CDT | Mesoscale Discussion | SPC | 37 min |
| Apr 28, 3:43 PM CDT | Frost Advisory | MEG | 16 hr |
| May 2, 1:54 PM CDT | Tornado Watch | SPC | 6 hr |
| May 2, 3:35 PM CDT | Mesoscale Discussion | SPC | 85 min |
| May 2, 5:30 PM CDT | Flash Flood Warning | MEG | 90 min |
| May 2, 6:27 PM CDT | Tornado Warning | MEG | 33 min |
| May 2, 7:01 PM CDT | Flash Flood Warning | MEG | 9 hr |
| May 2, 7:03 PM CDT | Tornado Warning | MEG | 42 min |
| May 2, 7:09 PM CDT | Mesoscale Discussion | SPC | 96 min |
| May 2, 7:42 PM CDT | Severe Thunderstorm Warning | MEG | 48 min |
| May 2, 7:48 PM CDT | Tornado Watch | SPC | 4 hr |
| May 2, 11:04 PM CDT | Mesoscale Discussion | SPC | 86 min |
| May 3, 2:16 AM CDT | Mesoscale Discussion | SPC | 59 min |
| May 8, 8:04 AM CDT | Tornado Watch | SPC | 6 hr |
| May 8, 10:07 AM CDT | Mesoscale Discussion | SPC | 83 min |
| May 9, 3:29 PM CDT | Mesoscale Discussion | SPC | 2 hr |
| May 9, 6:18 PM CDT | Mesoscale Discussion | SPC | 57 min |
| May 9, 11:08 PM CDT | Mesoscale Discussion | SPC | 2 hr |
| May 10, 4:27 PM CDT | Tornado Watch | SPC | 10 hr |
| May 10, 6:22 PM CDT | Mesoscale Discussion | SPC | 83 min |
| May 10, 8:58 PM CDT | Severe Thunderstorm Warning | MEG | 47 min |
| May 10, 9:21 PM CDT | Mesoscale Discussion | SPC | 84 min |
| May 10, 9:38 PM CDT | Tornado Warning | MEG | 52 min |
| May 10, 10:17 PM CDT | Tornado Warning | MEG | 43 min |
| May 11, 3:08 AM CDT | Wind Advisory | MEG | 12 hr |
| May 13, 2:59 PM CDT | Flash Flood Watch | MEG | 44 hr |
| May 26, 12:10 PM CDT | Mesoscale Discussion | SPC | 65 min |
| May 26, 1:07 PM CDT | Areal Flood Advisory | MEG | 113 min |
| May 26, 5:14 PM CDT | Mesoscale Discussion | SPC | 3 hr |
| May 28, 2:29 AM CDT | Areal Flood Advisory | MEG | 2 hr |
| Jun 1, 3:04 PM CDT | Severe Thunderstorm Watch | SPC | 6 hr |
| Jun 1, 6:27 PM CDT | Mesoscale Discussion | SPC | 63 min |
| Jun 2, 4:01 PM CDT | Severe Thunderstorm Watch | SPC | 3 hr |
| Jun 2, 5:02 PM CDT | Mesoscale Discussion | SPC | 88 min |
| Jun 2, 6:47 PM CDT | Mesoscale Discussion | SPC | 58 min |
| Jun 13, 11:09 PM CDT | Mesoscale Discussion | SPC | 96 min |
| Jun 14, 1:33 AM CDT | Areal Flood Advisory | MEG | 106 min |
| Jun 15, 3:18 AM CDT | Dense Fog Advisory | MEG | 6 hr |
| Jul 10, 4:42 PM CDT | Severe Thunderstorm Warning | MEG | 33 min |
| Jul 10, 5:59 PM CDT | Areal Flood Advisory | MEG | 82 min |
| Jul 20, 3:27 PM CDT | Heat Advisory | MEG | 48 hr |
| Jul 22, 11:55 AM CDT | Mesoscale Discussion | SPC | 3 hr |
| Jul 22, 1:40 PM CDT | Severe Thunderstorm Warning | MEG | 50 min |
| Jul 26, 2:51 AM CDT | Areal Flood Advisory | MEG | 3 hr |
| Jul 26, 3:50 AM CDT | Heat Advisory | MEG | 4 days |
| Jul 26, 10:52 AM CDT | Areal Flood Advisory | MEG | 113 min |
| Jul 31, 3:32 PM CDT | Severe Thunderstorm Warning | MEG | 43 min |
| Aug 1, 12:28 PM CDT | Heat Advisory | MEG | 64 hr |
| Aug 2, 10:15 AM CDT | Excessive Heat Warning | MEG | 10 hr |
| Aug 2, 6:34 PM CDT | Severe Thunderstorm Warning | MEG | 41 min |
| Aug 3, 3:46 PM CDT | Heat Advisory | MEG | 13 hr |
| Aug 4, 3:25 PM CDT | Heat Advisory | MEG | 29 hr |
| Aug 15, 2:09 PM CDT | Areal Flood Advisory | MEG | 2 hr |
| Aug 21, 4:25 PM CDT | Areal Flood Advisory | MEG | 2 hr |
| Sep 4, 12:25 PM CDT | Mesoscale Discussion | SPC | 2 hr |
| Sep 13, 6:54 AM CDT | Wind Advisory | MEG | 32 hr |
| Sep 14, 1:57 AM CDT | Tornado Watch | SPC | 8 hr |
| Sep 14, 9:21 AM CDT | Mesoscale Discussion | SPC | 84 min |
| Oct 19, 3:34 PM CDT | Frost Advisory | MEG | 17 hr |
| Oct 27, 3:57 AM CDT | Freeze Watch | MEG | 24 hr |
| Oct 27, 3:57 AM CDT | Freeze Warning | MEG | 29 hr |
| Oct 27, 10:44 AM CDT | Red Flag Warning | MEG | 8 hr |
| Oct 28, 3:30 AM CDT | Freeze Warning | MEG | 30 hr |
| Oct 29, 2:49 PM CDT | Freeze Warning | MEG | 18 hr |
| Nov 13, 9:52 PM CST | Dense Fog Advisory | MEG | 8 hr |
| Dec 8, 2:47 PM CST | Wind Advisory | MEG | 27 hr |
| Dec 9, 9:14 PM CST | Flash Flood Warning | MEG | 3 hr |
| Dec 9, 9:22 PM CST | Flash Flood Watch | MEG | 7 hr |
| Dec 11, 2:01 AM CST | Flash Flood Watch | MEG | 15 hr |
| Dec 11, 6:48 AM CST | Wind Advisory | MEG | 10 hr |
| Dec 15, 12:00 PM CST | Freezing Rain Advisory | MEG | 24 hr |
| Dec 15, 6:13 PM CST | Mesoscale Discussion | SPC | 4 hr |
| Dec 16, 5:23 PM CST | Dense Fog Advisory | MEG | 12 hr |
| Dec 17, 9:27 PM CST | Dense Fog Advisory | MEG | 12 hr |
| Dec 18, 4:18 PM CST | Dense Fog Advisory | MEG | 12 hr |
| Dec 23, 4:11 AM CST | Winter Weather Advisory | MEG | 10 hr |
| Dec 23, 6:02 AM CST | Mesoscale Discussion | SPC | 4 hr |
| Dec 27, 2:54 AM CST | Wind Advisory | MEG | 17 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 | 12 |
| Tornado Warning | 7 |
| Severe Thunderstorm Watch | 4 |
| Tornado Watch | 11 |
| Mesoscale Discussion | 46 |
| Flooding | |
| Flash Flood Warning | 6 |
| Flash Flood Watch | 4 |
| Areal Flood Advisory | 8 |
| Winter | |
| Winter Storm Warning | 1 |
| Freezing Rain Advisory | 2 |
| Winter Weather Advisory | 5 |
| Heat | |
| Excessive Heat Warning | 1 |
| Heat Advisory | 5 |
| Cold | |
| Freeze Warning | 4 |
| Freeze Watch | 2 |
| Frost Advisory | 2 |
| Wind and dust | |
| High Wind Warning | 1 |
| Wind Advisory | 15 |
| Fire | |
| Red Flag Warning | 1 |
| Fog and smoke | |
| Dense Fog Advisory | 6 |
| Freezing Fog Advisory | 1 |
The busiest days
Days with the most alerts issued, by UTC date.
Nearby
Alerts in force nowTornadoes on recordForecastThe radar archive20072009
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.