Alert archive / Mississippi / Carroll County
Weather alerts in Carroll County, Mississippi, 2017
107 weather alerts in 2017, from the National Weather Service and the Storm Prediction Center. An alert counts here when it covered this county.
Carroll County and its neighbors
Each county as a circle sized by its count in 2017. Tap one for its archive.
- Alerts
- 107
- Warnings
- 17
- Watches
- 20
- Advisories
- 25
- Busiest month
- March17 alerts
- Busiest day
- June 16, 20178 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 1 tornado warnings covering Carroll County in 2017 had a tornado report inside them; 2 of 2 tornado reports fell inside a warning, on average 18 minutes after it went out.
Carroll County, 2017
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| Tornado warnings | 1 | 1 | 0% | 2 | 100% | 18 min |
| Severe thunderstorm warnings | 8 | 6 | 25% | 11 | 82% | 24 min |
| Flash flood warnings | 2 | 1 | 50% | 0 |
Each office's whole area, 2017
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| NWS Jackson, MS: tornado warnings | 84 | 34 | 60% | 98 | 86% | 22 min |
| NWS Jackson, MS: severe thunderstorm warnings | 380 | 246 | 35% | 733 | 78% | 22 min |
| NWS Jackson, MS: flash flood warnings | 128 | 78 | 39% | 257 | 79% | 68 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 |
|---|---|---|---|
| Dec 31, 10:00 PM CST | Dense Fog Advisory | JAN | 12 hr |
| Jan 1, 7:02 PM CST | Dense Fog Advisory | JAN | 12 hr |
| Jan 5, 1:04 PM CST | Winter Weather Advisory | JAN | 33 hr |
| Jan 6, 7:05 PM CST | Hard Freeze Warning | JAN | 41 hr |
| Jan 6, 9:48 PM CST | Wind Chill Advisory | JAN | 13 hr |
| Jan 9, 2:43 PM CST | Wind Advisory | JAN | 27 hr |
| Jan 13, 7:37 PM CST | Dense Fog Advisory | JAN | 13 hr |
| Jan 15, 3:42 AM CST | Dense Fog Advisory | JAN | 6 hr |
| Jan 21, 7:50 PM CST | Tornado Watch | SPC | 4 hr |
| Jan 21, 8:22 PM CST | Mesoscale Discussion | SPC | 113 min |
| Feb 7, 12:22 PM CST | Mesoscale Discussion | SPC | 2 hr |
| Feb 8, 1:06 AM CST | Dense Fog Advisory | JAN | 7 hr |
| Feb 22, 3:14 AM CST | Dense Fog Advisory | JAN | 7 hr |
| Feb 22, 2:28 PM CST | Dense Fog Advisory | JAN | 18 hr |
| Feb 24, 8:27 PM CST | Special Weather Statement | JAN | 33 min |
| Feb 28, 2:10 AM CST | Mesoscale Discussion | SPC | 3 hr |
| Feb 28, 6:39 AM CST | Special Weather Statement | JAN | 51 min |
| Mar 1, 10:08 AM CST | Mesoscale Discussion | SPC | 2 hr |
| Mar 1, 11:48 AM CST | Tornado Watch | SPC | 6 hr |
| Mar 7, 2:58 AM CST | Mesoscale Discussion | SPC | 92 min |
| Mar 7, 3:37 AM CST | Severe Thunderstorm Watch | SPC | 8 hr |
| Mar 7, 8:03 AM CST | Mesoscale Discussion | SPC | 117 min |
| Mar 7, 11:02 AM CST | Mesoscale Discussion | SPC | 58 min |
| Mar 10, 1:31 AM CST | Special Weather Statement | JAN | 59 min |
| Mar 13, 3:13 PM CDT | Freeze Watch | JAN | 229 days |
| Mar 14, 3:48 AM CDT | Freeze Watch | JAN | 24 hr |
| Mar 14, 3:48 AM CDT | Freeze Warning | JAN | 30 hr |
| Mar 15, 3:25 AM CDT | Freeze Warning | JAN | 28 hr |
| Mar 25, 1:34 PM CDT | Mesoscale Discussion | SPC | 116 min |
| Mar 27, 12:12 PM CDT | Mesoscale Discussion | SPC | 2 hr |
| Mar 27, 1:54 PM CDT | Severe Thunderstorm Watch | SPC | 7 hr |
| Mar 27, 3:33 PM CDT | Mesoscale Discussion | SPC | 87 min |
| Mar 29, 7:26 PM CDT | Tornado Watch | SPC | 8 hr |
| Mar 29, 9:58 PM CDT | Mesoscale Discussion | SPC | 92 min |
| Apr 2, 3:31 PM CDT | Mesoscale Discussion | SPC | 29 min |
| Apr 2, 4:52 PM CDT | Tornado Watch | SPC | 9 hr |
| Apr 3, 11:15 AM CDT | River Flood Warning | JAN | 48 hr |
| Apr 22, 12:51 PM CDT | Mesoscale Discussion | SPC | 114 min |
| Apr 22, 3:08 PM CDT | Severe Thunderstorm Watch | SPC | 4 hr |
| Apr 22, 4:56 PM CDT | Mesoscale Discussion | SPC | 64 min |
| Apr 26, 4:44 PM CDT | Tornado Watch | SPC | 5 hr |
| Apr 26, 7:02 PM CDT | Mesoscale Discussion | SPC | 88 min |
| Apr 26, 8:30 PM CDT | Severe Thunderstorm Warning | JAN | 39 min |
| Apr 26, 8:53 PM CDT | Severe Thunderstorm Warning | JAN | 67 min |
| Apr 28, 3:43 PM CDT | Wind Advisory | JAN | 33 hr |
| Apr 29, 11:50 AM CDT | Flash Flood Watch | JAN | 28 hr |
| Apr 30, 6:59 AM CDT | Mesoscale Discussion | SPC | 2 hr |
| Apr 30, 7:32 AM CDT | Tornado Watch | SPC | 7 hr |
| Apr 30, 9:09 AM CDT | Severe Thunderstorm Warning | JAN | 66 min |
| Apr 30, 9:37 AM CDT | Tornado Warning | JAN | 53 min |
| May 3, 3:48 AM CDT | Wind Advisory | JAN | 24 hr |
| May 12, 1:43 PM CDT | Mesoscale Discussion | SPC | 3 hr |
| May 12, 6:04 PM CDT | Special Weather Statement | JAN | 26 min |
| May 12, 6:42 PM CDT | Special Weather Statement | JAN | 33 min |
| May 12, 7:16 PM CDT | Flash Flood Warning | JAN | 119 min |
| May 19, 6:48 PM CDT | Severe Thunderstorm Warning | JAN | 57 min |
| May 20, 2:12 PM CDT | Mesoscale Discussion | SPC | 93 min |
| May 27, 11:46 PM CDT | Mesoscale Discussion | SPC | 59 min |
| May 28, 12:18 AM CDT | Severe Thunderstorm Watch | SPC | 6 hr |
| May 28, 2:11 AM CDT | Mesoscale Discussion | SPC | 2 hr |
| Jun 15, 11:36 AM CDT | Mesoscale Discussion | SPC | 114 min |
| Jun 15, 3:19 PM CDT | Special Weather Statement | JAN | 26 min |
| Jun 16, 12:05 PM CDT | Mesoscale Discussion | SPC | 2 hr |
| Jun 16, 12:42 PM CDT | Severe Thunderstorm Watch | SPC | 10 hr |
| Jun 16, 3:20 PM CDT | Severe Thunderstorm Warning | JAN | 55 min |
| Jun 16, 3:40 PM CDT | Mesoscale Discussion | SPC | 2 hr |
| Jun 16, 4:25 PM CDT | Severe Thunderstorm Warning | JAN | 50 min |
| Jun 16, 5:21 PM CDT | Severe Thunderstorm Warning | JAN | 39 min |
| Jun 16, 5:53 PM CDT | Flash Flood Warning | JAN | 3 hr |
| Jun 16, 6:19 PM CDT | Mesoscale Discussion | SPC | 56 min |
| Jun 19, 2:44 PM CDT | Flash Flood Watch | JAN | 4 days |
| Jun 22, 11:50 AM CDT | Mesoscale Discussion | SPC | 85 min |
| Jun 22, 1:04 PM CDT | Tornado Watch | SPC | 9 hr |
| Jun 22, 2:21 PM CDT | Special Weather Statement | JAN | 24 min |
| Jun 22, 3:48 PM CDT | Mesoscale Discussion | SPC | 87 min |
| Jun 22, 8:57 PM CDT | Mesoscale Discussion | SPC | 63 min |
| Jun 23, 9:00 AM CDT | Special Weather Statement | JAN | 30 min |
| Jul 1, 3:40 PM CDT | Special Weather Statement | JAN | 35 min |
| Jul 19, 3:22 AM CDT | Heat Advisory | JAN | 40 hr |
| Jul 20, 1:57 PM CDT | Heat Advisory | JAN | 29 hr |
| Jul 22, 3:45 AM CDT | Heat Advisory | JAN | 15 hr |
| Jul 25, 3:15 PM CDT | Special Weather Statement | JAN | 30 min |
| Jul 26, 4:19 AM CDT | Heat Advisory | JAN | 40 hr |
| Aug 7, 2:04 PM CDT | Flash Flood Watch | JAN | 17 hr |
| Aug 8, 9:44 AM CDT | Flash Flood Watch | JAN | 33 hr |
| Aug 10, 2:42 AM CDT | Flash Flood Watch | JAN | 16 hr |
| Aug 16, 2:59 PM CDT | Heat Advisory | JAN | 19 hr |
| Aug 18, 3:02 PM CDT | Heat Advisory | JAN | 52 hr |
| Aug 29, 10:54 AM CDT | Flash Flood Watch | JAN | 56 hr |
| Sep 4, 4:24 PM CDT | Special Weather Statement | JAN | 51 min |
| Sep 5, 2:36 PM CDT | Mesoscale Discussion | SPC | 54 min |
| Sep 5, 3:06 PM CDT | Special Weather Statement | JAN | 24 min |
| Sep 5, 3:35 PM CDT | Severe Thunderstorm Warning | JAN | 40 min |
| Oct 28, 3:39 AM CDT | Freeze Warning | JAN | 29 hr |
| Nov 2, 3:52 PM CDT | Mesoscale Discussion | SPC | 113 min |
| Nov 3, 7:59 PM CDT | Mesoscale Discussion | SPC | 2 hr |
| Nov 3, 8:23 PM CDT | Special Weather Statement | JAN | 67 min |
| Nov 17, 2:43 PM CST | Wind Advisory | JAN | 30 hr |
| Dec 1, 1:57 PM CST | Dense Fog Advisory | JAN | 20 hr |
| Dec 7, 3:33 AM CST | Winter Weather Advisory | JAN | 32 hr |
| Dec 17, 4:04 AM CST | Special Weather Statement | JAN | 56 min |
| Dec 17, 5:18 PM CST | Dense Fog Advisory | JAN | 16 hr |
| Dec 18, 3:45 PM CST | Dense Fog Advisory | JAN | 16 hr |
| Dec 20, 11:13 AM CST | River Flood Warning | JAN | 31 hr |
| Dec 21, 2:05 AM CST | Dense Fog Advisory | JAN | 8 hr |
| Dec 22, 11:11 PM CST | Mesoscale Discussion | SPC | 3 hr |
| Dec 30, 5:04 AM CST | Winter Weather Advisory | JAN | 33 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 |
| Tornado Warning | 1 |
| Severe Thunderstorm Watch | 5 |
| Tornado Watch | 7 |
| Mesoscale Discussion | 31 |
| Special Weather Statement | 14 |
| Flooding | |
| Flash Flood Warning | 2 |
| River Flood Warning | 2 |
| Flash Flood Watch | 6 |
| Winter | |
| Winter Weather Advisory | 3 |
| Heat | |
| Heat Advisory | 6 |
| Cold | |
| Freeze Warning | 3 |
| Hard Freeze Warning | 1 |
| Freeze Watch | 2 |
| Wind Chill Advisory | 1 |
| Wind and dust | |
| Wind Advisory | 4 |
| 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 archive20162018
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.