Alert archive / Mississippi / Walthall County
Weather alerts in Walthall County, Mississippi, 2016
146 weather alerts in 2016, from the National Weather Service and the Storm Prediction Center. An alert counts here when it covered this county.
Walthall County and its neighbors
Each county as a circle sized by its count in 2016. Tap one for its archive.
- Alerts
- 146
- Warnings
- 29
- Watches
- 21
- Advisories
- 30
- Busiest month
- March36 alerts
- Busiest day
- March 17, 20169 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 7 tornado warnings covering Walthall County in 2016 had a tornado report inside them; 0 of 1 tornado reports fell inside a warning.
Walthall County, 2016
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| Tornado warnings | 7 | 0 | 100% | 1 | 0% | |
| Severe thunderstorm warnings | 12 | 3 | 75% | 5 | 60% | 27 min |
| Flash flood warnings | 7 | 4 | 43% | 0 |
Each office's whole area, 2016
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| NWS New Orleans, LA: tornado warnings | 88 | 15 | 83% | 44 | 66% | 15 min |
| NWS New Orleans, LA: severe thunderstorm warnings | 148 | 38 | 74% | 119 | 51% | 21 min |
| NWS New Orleans, LA: flash flood warnings | 76 | 30 | 61% | 47 | 85% | 136 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, 8:32 PM CST | Dense Fog Advisory | LIX | 13 hr |
| Jan 21, 1:44 PM CST | Mesoscale Discussion | SPC | 2 hr |
| Jan 21, 2:14 PM CST | Tornado Watch | SPC | 6 hr |
| Jan 21, 4:57 PM CST | Mesoscale Discussion | SPC | 63 min |
| Jan 21, 5:39 PM CST | Special Weather Statement | LIX | 36 min |
| Jan 21, 6:15 PM CST | Severe Thunderstorm Warning | LIX | 45 min |
| Jan 23, 3:47 AM CST | Hard Freeze Watch | LIX | 12 hr |
| Jan 31, 3:27 PM CST | Dense Fog Advisory | LIX | 18 hr |
| Feb 1, 9:05 AM CST | Dense Fog Advisory | LIX | 3 hr |
| Feb 2, 12:50 PM CST | Mesoscale Discussion | SPC | 55 min |
| Feb 2, 1:18 PM CST | Tornado Watch | SPC | 6 hr |
| Feb 2, 5:18 PM CST | Mesoscale Discussion | SPC | 117 min |
| Feb 2, 6:52 PM CST | Tornado Watch | SPC | 8 hr |
| Feb 2, 10:23 PM CST | Mesoscale Discussion | SPC | 2 hr |
| Feb 2, 10:48 PM CST | Special Weather Statement | LIX | 42 min |
| Feb 8, 3:32 AM CST | Wind Advisory | LIX | 18 hr |
| Feb 9, 3:23 AM CST | Wind Advisory | LIX | 14 hr |
| Feb 15, 5:27 AM CST | Mesoscale Discussion | SPC | 3 hr |
| Feb 15, 7:41 AM CST | Mesoscale Discussion | SPC | 3 hr |
| Feb 15, 9:30 AM CST | Tornado Watch | SPC | 8 hr |
| Feb 15, 11:50 AM CST | Mesoscale Discussion | SPC | 115 min |
| Feb 15, 12:42 PM CST | Severe Thunderstorm Warning | LIX | 48 min |
| Feb 15, 1:19 PM CST | Tornado Warning | LIX | 26 min |
| Feb 15, 1:51 PM CST | Mesoscale Discussion | SPC | 114 min |
| Feb 15, 2:06 PM CST | Special Weather Statement | LIX | 24 min |
| Feb 20, 6:09 AM CST | Dense Fog Advisory | LIX | 3 hr |
| Feb 22, 4:20 PM CST | Wind Advisory | LIX | 38 hr |
| Feb 23, 11:08 AM CST | Tornado Watch | SPC | 7 hr |
| Feb 23, 1:15 PM CST | Mesoscale Discussion | SPC | 2 hr |
| Feb 23, 1:51 PM CST | Tornado Warning | LIX | 24 min |
| Feb 23, 2:13 PM CST | Tornado Watch | SPC | 8 hr |
| Feb 23, 2:18 PM CST | Special Weather Statement | LIX | 27 min |
| Mar 1, 3:25 AM CST | Dense Fog Advisory | LIX | 4 hr |
| Mar 1, 4:51 PM CST | Mesoscale Discussion | SPC | 114 min |
| Mar 3, 1:13 PM CST | Mesoscale Discussion | SPC | 3 hr |
| Mar 3, 4:53 PM CST | Special Weather Statement | LIX | 67 min |
| Mar 3, 4:57 PM CST | Severe Thunderstorm Warning | LIX | 33 min |
| Mar 5, 5:10 AM CST | Dense Fog Advisory | LIX | 4 hr |
| Mar 9, 3:28 AM CST | Flash Flood Watch | LIX | 4 days |
| Mar 10, 10:03 AM CST | River Flood Warning | LIX | 4 days |
| Mar 10, 3:10 PM CST | Areal Flood Advisory | LIX | 2 hr |
| Mar 10, 4:32 PM CST | Areal Flood Advisory | LIX | 4 hr |
| Mar 10, 5:05 PM CST | Flash Flood Warning | LIX | 3 hr |
| Mar 10, 7:56 PM CST | Flash Flood Warning | LIX | 2 hr |
| Mar 10, 9:02 PM CST | Areal Flood Advisory | LIX | 118 min |
| Mar 10, 9:28 PM CST | Flash Flood Warning | LIX | 4 hr |
| Mar 11, 1:24 AM CST | Flash Flood Warning | LIX | 3 hr |
| Mar 11, 4:12 AM CST | Flash Flood Warning | LIX | 4 hr |
| Mar 11, 7:44 AM CST | Flash Flood Warning | LIX | 8 hr |
| Mar 17, 8:53 AM CDT | Special Weather Statement | LIX | 52 min |
| Mar 17, 9:27 AM CDT | Severe Thunderstorm Warning | LIX | 48 min |
| Mar 17, 10:14 AM CDT | Severe Thunderstorm Warning | LIX | 16 min |
| Mar 17, 12:58 PM CDT | Mesoscale Discussion | SPC | 92 min |
| Mar 17, 1:19 PM CDT | Severe Thunderstorm Watch | SPC | 9 hr |
| Mar 17, 2:55 PM CDT | Severe Thunderstorm Warning | LIX | 35 min |
| Mar 17, 3:48 PM CDT | Mesoscale Discussion | SPC | 87 min |
| Mar 17, 5:09 PM CDT | Severe Thunderstorm Warning | LIX | 51 min |
| Mar 17, 6:22 PM CDT | Mesoscale Discussion | SPC | 53 min |
| Mar 18, 7:02 PM CDT | Special Weather Statement | LIX | 58 min |
| Mar 18, 7:28 PM CDT | Mesoscale Discussion | SPC | 92 min |
| Mar 27, 1:33 PM CDT | Special Weather Statement | LIX | 42 min |
| Mar 28, 2:17 AM CDT | Dense Fog Advisory | LIX | 6 hr |
| Mar 30, 3:55 PM CDT | Flash Flood Watch | LIX | 51 hr |
| Mar 31, 3:04 AM CDT | Mesoscale Discussion | SPC | 86 min |
| Mar 31, 3:20 AM CDT | Tornado Watch | SPC | 6 hr |
| Mar 31, 6:16 AM CDT | Tornado Warning | LIX | 11 min |
| Mar 31, 7:05 AM CDT | Severe Thunderstorm Warning | LIX | 25 min |
| Mar 31, 3:30 PM CDT | Mesoscale Discussion | SPC | 2 hr |
| Apr 11, 12:15 PM CDT | Mesoscale Discussion | SPC | 3 hr |
| Apr 14, 3:29 PM CDT | Mesoscale Discussion | SPC | 91 min |
| Apr 27, 7:54 AM CDT | Severe Thunderstorm Watch | SPC | 7 hr |
| Apr 27, 11:20 AM CDT | Special Weather Statement | LIX | 25 min |
| Apr 30, 4:24 AM CDT | Flash Flood Watch | LIX | 58 hr |
| Apr 30, 11:38 AM CDT | Severe Thunderstorm Watch | SPC | 7 hr |
| Apr 30, 1:42 PM CDT | Severe Thunderstorm Warning | LIX | 33 min |
| Apr 30, 1:57 PM CDT | Tornado Warning | LIX | 33 min |
| Apr 30, 2:14 PM CDT | Severe Thunderstorm Warning | LIX | 61 min |
| Apr 30, 3:13 PM CDT | Severe Thunderstorm Warning | LIX | 69 min |
| Apr 30, 4:00 PM CDT | Mesoscale Discussion | SPC | 2 hr |
| May 19, 5:42 PM CDT | Mesoscale Discussion | SPC | 93 min |
| May 20, 12:04 AM CDT | Special Weather Statement | LIX | 41 min |
| May 30, 5:22 PM CDT | Special Weather Statement | LIX | 38 min |
| Jun 2, 3:39 PM CDT | Flash Flood Watch | LIX | 63 hr |
| Jun 3, 12:45 PM CDT | Mesoscale Discussion | SPC | 3 hr |
| Jun 12, 4:47 PM CDT | Special Weather Statement | LIX | 58 min |
| Jun 16, 10:44 AM CDT | Heat Advisory | LIX | 32 hr |
| Jun 27, 5:50 PM CDT | Special Weather Statement | LIX | 25 min |
| Jun 28, 4:04 PM CDT | Special Weather Statement | LIX | 41 min |
| Jul 5, 3:35 AM CDT | Heat Advisory | LIX | 15 hr |
| Jul 5, 12:45 PM CDT | Mesoscale Discussion | SPC | 3 hr |
| Jul 5, 3:30 PM CDT | Special Weather Statement | LIX | 45 min |
| Jul 5, 3:44 PM CDT | Heat Advisory | LIX | 27 hr |
| Jul 6, 3:08 PM CDT | Special Weather Statement | LIX | 37 min |
| Jul 6, 3:54 PM CDT | Heat Advisory | LIX | 27 hr |
| Jul 14, 10:40 PM CDT | Mesoscale Discussion | SPC | 2 hr |
| Jul 20, 1:22 PM CDT | Special Weather Statement | LIX | 23 min |
| Jul 22, 2:52 PM CDT | Special Weather Statement | LIX | 53 min |
| Jul 28, 4:17 PM CDT | Special Weather Statement | LIX | 28 min |
| Jul 31, 2:12 PM CDT | Special Weather Statement | LIX | 33 min |
| Aug 3, 3:50 AM CDT | Heat Advisory | LIX | 15 hr |
| Aug 4, 10:39 AM CDT | Heat Advisory | LIX | 8 hr |
| Aug 5, 3:04 PM CDT | Heat Advisory | LIX | 28 hr |
| Aug 5, 6:39 PM CDT | Special Weather Statement | LIX | 66 min |
| Aug 6, 7:07 PM CDT | Severe Thunderstorm Warning | LIX | 53 min |
| Aug 11, 4:32 AM CDT | Flash Flood Watch | LIX | 3 days |
| Aug 11, 3:08 PM CDT | Special Weather Statement | LIX | 22 min |
| Aug 12, 7:05 AM CDT | Flash Flood Warning | LIX | 6 hr |
| Aug 12, 9:36 AM CDT | River Flood Warning | LIX | 65 hr |
| Aug 19, 4:03 PM CDT | Special Weather Statement | LIX | 57 min |
| Aug 19, 5:04 PM CDT | Special Weather Statement | LIX | 26 min |
| Sep 11, 5:57 PM CDT | Special Weather Statement | LIX | 33 min |
| Sep 12, 8:31 PM CDT | Special Weather Statement | LIX | 29 min |
| Oct 17, 3:44 AM CDT | Dense Fog Advisory | LIX | 4 hr |
| Oct 17, 3:50 PM CDT | Dense Fog Advisory | LIX | 17 hr |
| Oct 30, 4:08 AM CDT | Dense Fog Advisory | LIX | 4 hr |
| Oct 30, 8:25 AM CDT | Dense Fog Advisory | LIX | 95 min |
| Nov 1, 8:04 AM CDT | Special Weather Statement | LIX | 41 min |
| Nov 3, 2:15 AM CDT | Dense Fog Advisory | LIX | 7 hr |
| Nov 15, 10:56 PM CST | Dense Fog Advisory | LIX | 9 hr |
| Nov 19, 2:54 PM CST | Freeze Watch | LIX | 20 hr |
| Nov 20, 10:33 AM CST | Freeze Warning | LIX | 21 hr |
| Nov 27, 3:35 PM CST | Wind Advisory | LIX | 26 hr |
| Nov 28, 2:23 PM CST | Mesoscale Discussion | SPC | 2 hr |
| Nov 28, 2:49 PM CST | Tornado Watch | SPC | 6 hr |
| Nov 28, 5:07 PM CST | Mesoscale Discussion | SPC | 83 min |
| Nov 28, 6:36 PM CST | Mesoscale Discussion | SPC | 2 hr |
| Nov 28, 8:39 PM CST | Mesoscale Discussion | SPC | 96 min |
| Nov 28, 8:53 PM CST | Tornado Warning | LIX | 17 min |
| Nov 28, 10:38 PM CST | Tornado Warning | LIX | 22 min |
| Nov 28, 10:39 PM CST | Tornado Warning | LIX | 21 min |
| Nov 28, 11:38 PM CST | Mesoscale Discussion | SPC | 3 hr |
| Nov 29, 5:21 AM CST | Special Weather Statement | LIX | 114 min |
| Nov 29, 5:33 AM CST | Special Weather Statement | LIX | 12 hr |
| Nov 29, 12:38 PM CST | Mesoscale Discussion | SPC | 2 hr |
| Nov 29, 8:03 PM CST | Mesoscale Discussion | SPC | 2 hr |
| Nov 29, 8:50 PM CST | Tornado Watch | SPC | 8 hr |
| Nov 29, 11:37 PM CST | Mesoscale Discussion | SPC | 113 min |
| Nov 30, 3:33 AM CST | Mesoscale Discussion | SPC | 87 min |
| Nov 30, 4:57 AM CST | Tornado Watch | SPC | 7 hr |
| Dec 13, 11:07 AM CST | Mesoscale Discussion | SPC | 2 hr |
| Dec 13, 12:37 PM CST | Special Weather Statement | LIX | 53 min |
| Dec 18, 4:05 AM CST | Special Weather Statement | LIX | 55 min |
| Dec 23, 4:09 PM CST | Dense Fog Advisory | LIX | 18 hr |
| Dec 24, 3:04 PM CST | Dense Fog Advisory | LIX | 19 hr |
| Dec 27, 3:30 PM CST | Dense Fog Advisory | LIX | 19 hr |
| Dec 30, 3:00 PM CST | Flood Watch | LIX | 3 days |
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 | 3 |
| Tornado Watch | 10 |
| Mesoscale Discussion | 35 |
| Special Weather Statement | 31 |
| Flooding | |
| Flash Flood Warning | 7 |
| River Flood Warning | 2 |
| Flash Flood Watch | 5 |
| Flood Watch | 1 |
| Areal Flood Advisory | 3 |
| Heat | |
| Heat Advisory | 7 |
| Cold | |
| Freeze Warning | 1 |
| Freeze Watch | 1 |
| Hard Freeze Watch | 1 |
| Wind and dust | |
| Wind Advisory | 4 |
| Fog and smoke | |
| Dense Fog Advisory | 16 |
The busiest days
Days with the most alerts issued, by UTC date.
Nearby
Alerts in force nowTornadoes on recordForecastThe radar archive20152017
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.