Alert archive / Mississippi / Calhoun County
Weather alerts in Calhoun County, Mississippi, 2015
118 weather alerts in 2015, from the National Weather Service and the Storm Prediction Center. An alert counts here when it covered this county.
Calhoun County and its neighbors
Each county as a circle sized by its count in 2015. Tap one for its archive.
- Alerts
- 118
- Warnings
- 30
- Watches
- 23
- Advisories
- 31
- Busiest month
- December25 alerts
- Busiest day
- December 25, 201513 alerts
Over time
By month
Warning verification
How often warnings here had a storm report inside them, and how much warning the reports had.
Calhoun County, 2015
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| Tornado warnings | 0 | 0 | ||||
| Severe thunderstorm warnings | 10 | 5 | 50% | 1 | 100% | 4 min |
| Flash flood warnings | 11 | 4 | 64% | 2 | 100% | 130 min |
Each office's whole area, 2015
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| NWS Memphis, TN: tornado warnings | 33 | 10 | 70% | 24 | 75% | 21 min |
| NWS Memphis, TN: severe thunderstorm warnings | 273 | 100 | 63% | 268 | 67% | 20 min |
| NWS Memphis, TN: flash flood warnings | 124 | 29 | 77% | 74 | 70% | 83 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 2, 7:56 PM CST | Flash Flood Watch | MEG | 20 hr |
| Jan 6, 9:10 PM CST | Wind Chill Advisory | MEG | 36 hr |
| Jan 15, 7:03 AM CST | Winter Weather Advisory | MEG | 5 hr |
| Jan 24, 7:32 AM CST | Freezing Fog Advisory | MEG | 90 min |
| Feb 14, 3:28 AM CST | Winter Storm Watch | MEG | 35 hr |
| Feb 15, 2:18 PM CST | Winter Weather Advisory | MEG | 30 hr |
| Feb 16, 2:57 AM CST | Mesoscale Discussion | SPC | 6 hr |
| Feb 18, 3:36 PM CST | Winter Storm Watch | MEG | 24 hr |
| Feb 19, 3:09 PM CST | Winter Weather Advisory | MEG | 33 hr |
| Feb 22, 3:33 AM CST | Winter Weather Advisory | MEG | 44 hr |
| Feb 22, 9:51 PM CST | Mesoscale Discussion | SPC | 4 hr |
| Feb 23, 3:22 PM CST | Winter Storm Watch | MEG | 23 hr |
| Feb 24, 2:42 PM CST | Winter Storm Warning | MEG | 33 hr |
| Feb 25, 11:17 AM CST | Mesoscale Discussion | SPC | 4 hr |
| Feb 26, 3:31 AM CST | Freezing Fog Advisory | MEG | 6 hr |
| Mar 2, 3:46 AM CST | Winter Storm Watch | MEG | 60 hr |
| Mar 3, 2:08 AM CST | Winter Storm Warning | MEG | 57 hr |
| Mar 3, 4:02 AM CST | Dense Fog Advisory | MEG | 8 hr |
| Mar 3, 8:55 PM CST | Dense Fog Advisory | MEG | 6 hr |
| Mar 4, 2:53 AM CST | Wind Advisory | MEG | 29 hr |
| Mar 4, 11:54 PM CST | Mesoscale Discussion | SPC | 6 hr |
| Mar 28, 2:59 PM CDT | Frost Advisory | MEG | 18 hr |
| Mar 31, 12:41 PM CDT | Mesoscale Discussion | SPC | 94 min |
| Mar 31, 1:45 PM CDT | Severe Thunderstorm Watch | SPC | 5 hr |
| Mar 31, 3:17 PM CDT | Severe Thunderstorm Warning | MEG | 28 min |
| Mar 31, 3:46 PM CDT | Severe Thunderstorm Warning | MEG | 12 min |
| Mar 31, 4:28 PM CDT | Severe Thunderstorm Warning | MEG | 47 min |
| Mar 31, 4:32 PM CDT | Mesoscale Discussion | SPC | 58 min |
| Apr 3, 3:57 PM CDT | Mesoscale Discussion | SPC | 93 min |
| Apr 9, 6:32 PM CDT | Severe Thunderstorm Watch | SPC | 5 hr |
| Apr 9, 10:01 PM CDT | Mesoscale Discussion | SPC | 119 min |
| Apr 10, 12:53 AM CDT | Mesoscale Discussion | SPC | 2 hr |
| Apr 10, 1:07 AM CDT | Severe Thunderstorm Warning | MEG | 38 min |
| Apr 19, 8:02 PM CDT | Tornado Watch | SPC | 5 hr |
| Apr 19, 10:16 PM CDT | Mesoscale Discussion | SPC | 59 min |
| Apr 25, 12:50 AM CDT | Tornado Watch | SPC | 6 hr |
| May 17, 3:47 AM CDT | Flash Flood Watch | MEG | 31 hr |
| May 17, 6:58 PM CDT | Flash Flood Warning | MEG | 3 hr |
| May 24, 3:30 PM CDT | Flash Flood Watch | MEG | 36 hr |
| May 24, 4:14 PM CDT | Tornado Watch | SPC | 8 hr |
| May 27, 11:42 AM CDT | Special Weather Statement | MEG | 48 min |
| May 27, 1:41 PM CDT | Flash Flood Warning | MEG | 3 hr |
| May 30, 12:43 PM CDT | Special Weather Statement | MEG | 47 min |
| May 30, 5:16 PM CDT | Mesoscale Discussion | SPC | 59 min |
| Jun 5, 6:27 PM CDT | Severe Thunderstorm Watch | SPC | 5 hr |
| Jun 5, 9:17 PM CDT | Mesoscale Discussion | SPC | 58 min |
| Jun 8, 4:25 PM CDT | Flash Flood Warning | MEG | 3 hr |
| Jun 8, 4:54 PM CDT | Mesoscale Discussion | SPC | 96 min |
| Jun 22, 7:08 PM CDT | Heat Advisory | MEG | 24 hr |
| Jun 23, 7:24 PM CDT | Heat Advisory | MEG | 24 hr |
| Jun 24, 1:55 PM CDT | Mesoscale Discussion | SPC | 65 min |
| Jun 24, 2:53 PM CDT | Heat Advisory | MEG | 28 hr |
| Jun 24, 4:40 PM CDT | Flash Flood Warning | MEG | 3 hr |
| Jun 30, 9:17 AM CDT | Special Weather Statement | MEG | 43 min |
| Jul 3, 5:10 AM CDT | Flash Flood Warning | MEG | 3 hr |
| Jul 3, 8:31 AM CDT | Flash Flood Watch | MEG | 34 hr |
| Jul 3, 9:30 AM CDT | Flash Flood Warning | MEG | 3 hr |
| Jul 3, 2:00 PM CDT | Flash Flood Warning | MEG | 3 hr |
| Jul 3, 4:57 PM CDT | Areal Flood Warning | MEG | 6 hr |
| Jul 4, 4:01 AM CDT | Special Weather Statement | MEG | 44 min |
| Jul 4, 5:07 AM CDT | Severe Thunderstorm Warning | MEG | 38 min |
| Jul 12, 3:09 AM CDT | Heat Advisory | MEG | 9 days |
| Jul 14, 3:55 PM CDT | Mesoscale Discussion | SPC | 65 min |
| Jul 14, 3:59 PM CDT | Severe Thunderstorm Watch | SPC | 7 hr |
| Jul 14, 5:24 PM CDT | Mesoscale Discussion | SPC | 2 hr |
| Jul 21, 2:11 AM CDT | Heat Advisory | MEG | 17 hr |
| Jul 24, 4:03 AM CDT | Heat Advisory | MEG | 6 days |
| Jul 27, 3:42 AM CDT | Heat Advisory | MEG | 64 hr |
| Jul 29, 2:12 PM CDT | Mesoscale Discussion | SPC | 2 hr |
| Aug 7, 3:27 AM CDT | Heat Advisory | MEG | 48 hr |
| Aug 7, 8:39 AM CDT | Mesoscale Discussion | SPC | 66 min |
| Aug 7, 9:51 AM CDT | Severe Thunderstorm Warning | MEG | 39 min |
| Aug 7, 10:22 AM CDT | Severe Thunderstorm Watch | SPC | 4 hr |
| Aug 7, 10:23 AM CDT | Severe Thunderstorm Warning | MEG | 29 min |
| Aug 8, 3:31 AM CDT | Heat Advisory | MEG | 48 hr |
| Aug 9, 3:29 AM CDT | Heat Advisory | MEG | 41 hr |
| Aug 10, 3:12 AM CDT | Excessive Heat Warning | MEG | 7 hr |
| Aug 18, 4:51 PM CDT | Special Weather Statement | MEG | 39 min |
| Aug 18, 5:36 PM CDT | Severe Thunderstorm Warning | MEG | 39 min |
| Aug 19, 12:30 PM CDT | Mesoscale Discussion | SPC | 3 hr |
| Aug 22, 1:44 PM CDT | Mesoscale Discussion | SPC | 2 hr |
| Aug 22, 7:00 PM CDT | Mesoscale Discussion | SPC | 2 hr |
| Oct 15, 1:43 PM CDT | Fire Weather Watch | MEG | 61 hr |
| Oct 18, 3:33 AM CDT | Frost Advisory | MEG | 28 hr |
| Nov 10, 3:47 AM CST | Dense Fog Advisory | MEG | 6 hr |
| Nov 13, 3:20 AM CST | Frost Advisory | MEG | 30 hr |
| Nov 14, 4:16 AM CST | Frost Advisory | MEG | 29 hr |
| Nov 16, 3:23 AM CST | Flash Flood Watch | MEG | 52 hr |
| Nov 16, 2:10 PM CST | Wind Advisory | MEG | 37 hr |
| Nov 18, 11:33 PM CST | Dense Fog Advisory | MEG | 9 hr |
| Nov 20, 2:07 PM CST | Freeze Watch | MEG | 12 hr |
| Nov 21, 2:18 AM CST | Freeze Warning | MEG | 31 hr |
| Nov 21, 2:18 AM CST | Freeze Warning | MEG | 55 hr |
| Dec 9, 8:33 PM CST | Dense Fog Advisory | MEG | 14 hr |
| Dec 12, 2:34 PM CST | Wind Advisory | MEG | 33 hr |
| Dec 22, 7:30 AM CST | Dense Fog Advisory | MEG | 4 hr |
| Dec 23, 10:58 AM CST | Mesoscale Discussion | SPC | 2 hr |
| Dec 23, 11:57 AM CST | Tornado Watch | SPC | 9 hr |
| Dec 23, 2:49 PM CST | Mesoscale Discussion | SPC | 86 min |
| Dec 23, 7:41 PM CST | Mesoscale Discussion | SPC | 2 hr |
| Dec 24, 7:48 PM CST | Special Weather Statement | MEG | 42 min |
| Dec 24, 8:18 PM CST | Flash Flood Watch | MEG | 25 hr |
| Dec 25, 1:48 AM CST | Mesoscale Discussion | SPC | 2 hr |
| Dec 25, 2:32 AM CST | Flash Flood Watch | MEG | 3 days |
| Dec 25, 7:45 AM CST | Mesoscale Discussion | SPC | 3 hr |
| Dec 25, 8:37 AM CST | Flash Flood Warning | MEG | 6 hr |
| Dec 25, 9:07 AM CST | Severe Thunderstorm Warning | MEG | 53 min |
| Dec 25, 10:32 AM CST | Flash Flood Warning | MEG | 3 hr |
| Dec 25, 12:01 PM CST | Flash Flood Warning | MEG | 3 hr |
| Dec 25, 1:22 PM CST | Areal Flood Warning | MEG | 6 hr |
| Dec 25, 2:13 PM CST | Flash Flood Warning | MEG | 3 hr |
| Dec 25, 2:38 PM CST | River Flood Warning | MEG | 23 hr |
| Dec 25, 4:55 PM CST | Areal Flood Warning | MEG | 14 hr |
| Dec 27, 12:54 PM CST | Wind Advisory | MEG | 29 hr |
| Dec 27, 3:15 PM CST | Mesoscale Discussion | SPC | 90 min |
| Dec 28, 2:23 AM CST | Tornado Watch | SPC | 8 hr |
| Dec 28, 5:14 AM CST | Mesoscale Discussion | SPC | 2 hr |
| Dec 28, 7:56 AM CST | Severe Thunderstorm Warning | MEG | 49 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 | 10 |
| Severe Thunderstorm Watch | 5 |
| Tornado Watch | 5 |
| Mesoscale Discussion | 28 |
| Special Weather Statement | 6 |
| Flooding | |
| Areal Flood Warning | 3 |
| Flash Flood Warning | 11 |
| River Flood Warning | 1 |
| Flash Flood Watch | 7 |
| Winter | |
| Winter Storm Warning | 2 |
| Winter Storm Watch | 4 |
| Winter Weather Advisory | 4 |
| Heat | |
| Excessive Heat Warning | 1 |
| Heat Advisory | 10 |
| Cold | |
| Freeze Warning | 2 |
| Freeze Watch | 1 |
| Frost Advisory | 4 |
| Wind Chill Advisory | 1 |
| Wind and dust | |
| Wind Advisory | 4 |
| Fire | |
| Fire Weather Watch | 1 |
| Fog and smoke | |
| Dense Fog Advisory | 6 |
| Freezing Fog Advisory | 2 |
The busiest days
Days with the most alerts issued, by UTC date.
Nearby
Alerts in force nowTornadoes on recordForecastThe radar archive20142016
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.