Alert archive / Mississippi / Copiah County
Weather alerts in Copiah County, Mississippi, 2010
146 weather alerts in 2010, from the National Weather Service and the Storm Prediction Center. An alert counts here when it covered this county.
Copiah County and its neighbors
Each county as a circle sized by its count in 2010. Tap one for its archive.
- Alerts
- 146
- Warnings
- 63
- Watches
- 30
- Advisories
- 21
- Busiest month
- August23 alerts
- Busiest day
- January 21, 20109 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 9 tornado warnings covering Copiah County in 2010 had a tornado report inside them; 1 of 1 tornado reports fell inside a warning, on average 10 minutes after it went out.
Copiah County, 2010
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| Tornado warnings | 9 | 1 | 89% | 1 | 100% | 10 min |
| Severe thunderstorm warnings | 38 | 21 | 45% | 20 | 80% | 20 min |
| Flash flood warnings | 3 | 1 | 67% | 1 | 100% | 35 min |
Each office's whole area, 2010
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| NWS Jackson, MS: tornado warnings | 111 | 29 | 74% | 97 | 89% | 32 min |
| NWS Jackson, MS: severe thunderstorm warnings | 620 | 337 | 46% | 707 | 75% | 20 min |
| NWS Jackson, MS: flash flood warnings | 111 | 54 | 51% | 102 | 91% | 60 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 5, 2:49 PM CST | Hard Freeze Watch | JAN | 38 hr |
| Jan 7, 4:24 AM CST | Hard Freeze Warning | JAN | 4 days |
| Jan 7, 4:52 AM CST | Wind Chill Advisory | JAN | 35 hr |
| Jan 17, 9:36 PM CST | Dense Fog Advisory | JAN | 11 hr |
| Jan 20, 3:13 PM CST | Tornado Watch | SPC | 7 hr |
| Jan 20, 8:05 PM CST | Severe Thunderstorm Warning | JAN | 22 min |
| Jan 20, 8:59 PM CST | Mesoscale Discussion | SPC | 91 min |
| Jan 20, 9:36 PM CST | Tornado Watch | SPC | 7 hr |
| Jan 20, 11:39 PM CST | Mesoscale Discussion | SPC | 66 min |
| Jan 21, 12:40 AM CST | Tornado Warning | JAN | 37 min |
| Jan 21, 12:55 AM CST | Flash Flood Warning | JAN | 109 min |
| Jan 21, 1:13 AM CST | Mesoscale Discussion | SPC | 62 min |
| Jan 21, 1:23 AM CST | Tornado Warning | JAN | 35 min |
| Jan 21, 3:34 AM CST | Mesoscale Discussion | SPC | 56 min |
| Jan 22, 3:22 PM CST | Lake Wind Advisory | JAN | 35 hr |
| Jan 23, 11:54 PM CST | Mesoscale Discussion | SPC | 96 min |
| Jan 24, 2:50 PM CST | Lake Wind Advisory | JAN | 26 hr |
| Jan 30, 11:02 AM CST | River Flood Warning | JAN | 71 hr |
| Feb 4, 10:21 AM CST | River Flood Warning | JAN | 6 days |
| Feb 8, 3:46 PM CST | Lake Wind Advisory | JAN | 26 hr |
| Feb 10, 3:33 AM CST | Winter Storm Watch | JAN | 25 hr |
| Feb 11, 4:41 AM CST | Winter Storm Warning | JAN | 33 hr |
| Feb 11, 11:30 PM CST | Mesoscale Discussion | SPC | 5 hr |
| Feb 14, 3:04 PM CST | Lake Wind Advisory | JAN | 24 hr |
| Feb 21, 6:50 PM CST | Mesoscale Discussion | SPC | 55 min |
| Feb 21, 7:26 PM CST | Severe Thunderstorm Warning | JAN | 36 min |
| Feb 21, 8:17 PM CST | Severe Thunderstorm Warning | JAN | 58 min |
| Feb 21, 9:00 PM CST | Severe Thunderstorm Warning | JAN | 45 min |
| Mar 10, 7:24 PM CST | Tornado Watch | SPC | 8 hr |
| Mar 11, 1:21 AM CST | Mesoscale Discussion | SPC | 54 min |
| Mar 11, 1:42 AM CST | Tornado Watch | SPC | 4 hr |
| Mar 11, 4:54 PM CST | Mesoscale Discussion | SPC | 66 min |
| Mar 11, 11:45 PM CST | Severe Thunderstorm Watch | SPC | 4 hr |
| Apr 3, 3:13 PM CDT | Dense Fog Advisory | JAN | 18 hr |
| Apr 23, 12:08 PM CDT | Mesoscale Discussion | SPC | 67 min |
| Apr 23, 12:51 PM CDT | Tornado Watch | SPC | 9 hr |
| Apr 24, 5:01 AM CDT | Mesoscale Discussion | SPC | 89 min |
| Apr 24, 6:00 AM CDT | Tornado Watch | SPC | 6 hr |
| Apr 24, 7:13 AM CDT | Severe Thunderstorm Warning | JAN | 47 min |
| Apr 24, 7:56 AM CDT | Severe Thunderstorm Warning | JAN | 64 min |
| Apr 24, 10:28 AM CDT | Mesoscale Discussion | SPC | 92 min |
| Apr 24, 11:31 AM CDT | Tornado Watch | SPC | 8 hr |
| Apr 24, 2:01 PM CDT | Mesoscale Discussion | SPC | 89 min |
| May 1, 9:52 AM CDT | Tornado Watch | SPC | 8 hr |
| May 2, 6:55 AM CDT | Mesoscale Discussion | SPC | 2 hr |
| May 2, 8:01 AM CDT | Tornado Watch | SPC | 7 hr |
| May 3, 12:08 AM CDT | Dense Fog Advisory | JAN | 9 hr |
| May 15, 12:04 PM CDT | Mesoscale Discussion | SPC | 116 min |
| May 20, 10:28 AM CDT | Severe Thunderstorm Watch | SPC | 12 hr |
| May 20, 1:58 PM CDT | Mesoscale Discussion | SPC | 92 min |
| May 20, 4:40 PM CDT | Severe Thunderstorm Warning | JAN | 65 min |
| May 20, 4:56 PM CDT | Severe Thunderstorm Warning | JAN | 34 min |
| May 20, 6:08 PM CDT | Mesoscale Discussion | SPC | 67 min |
| May 24, 5:50 PM CDT | Severe Thunderstorm Warning | JAN | 40 min |
| May 24, 7:57 PM CDT | Flash Flood Warning | JAN | 2 hr |
| May 29, 12:11 PM CDT | Mesoscale Discussion | SPC | 34 min |
| May 29, 12:34 PM CDT | Severe Thunderstorm Watch | SPC | 7 hr |
| May 29, 3:26 PM CDT | Severe Thunderstorm Warning | JAN | 34 min |
| Jun 11, 2:20 PM CDT | Heat Advisory | JAN | 3 days |
| Jun 15, 4:12 PM CDT | Severe Thunderstorm Warning | JAN | 63 min |
| Jun 15, 4:38 PM CDT | Severe Thunderstorm Warning | JAN | 52 min |
| Jun 19, 2:16 PM CDT | Heat Advisory | JAN | 29 hr |
| Jun 19, 4:49 PM CDT | Severe Thunderstorm Warning | JAN | 41 min |
| Jun 19, 5:39 PM CDT | Severe Thunderstorm Warning | JAN | 35 min |
| Jun 19, 6:33 PM CDT | Severe Thunderstorm Warning | JAN | 24 min |
| Jun 27, 6:06 PM CDT | Severe Thunderstorm Warning | JAN | 39 min |
| Jul 25, 5:57 AM CDT | Mesoscale Discussion | SPC | 2 hr |
| Jul 30, 4:45 AM CDT | Heat Advisory | JAN | 3 days |
| Aug 1, 1:39 PM CDT | Excessive Heat Warning | JAN | 4 days |
| Aug 2, 6:05 PM CDT | Severe Thunderstorm Warning | JAN | 20 min |
| Aug 3, 4:19 AM CDT | Heat Advisory | JAN | 34 hr |
| Aug 3, 2:26 PM CDT | Severe Thunderstorm Warning | JAN | 34 min |
| Aug 4, 3:33 PM CDT | Severe Thunderstorm Warning | JAN | 42 min |
| Aug 4, 3:48 PM CDT | Severe Thunderstorm Warning | JAN | 42 min |
| Aug 4, 4:32 PM CDT | Severe Thunderstorm Warning | JAN | 43 min |
| Aug 4, 4:55 PM CDT | Severe Thunderstorm Warning | JAN | 50 min |
| Aug 4, 5:22 PM CDT | Severe Thunderstorm Warning | JAN | 38 min |
| Aug 5, 4:56 AM CDT | Heat Advisory | JAN | 38 hr |
| Aug 5, 12:38 PM CDT | Severe Thunderstorm Warning | JAN | 37 min |
| Aug 5, 1:01 PM CDT | Severe Thunderstorm Warning | JAN | 44 min |
| Aug 5, 1:23 PM CDT | Flash Flood Warning | JAN | 97 min |
| Aug 7, 2:51 PM CDT | Heat Advisory | JAN | 9 days |
| Aug 15, 5:00 PM CDT | Severe Thunderstorm Warning | JAN | 60 min |
| Aug 15, 5:35 PM CDT | Severe Thunderstorm Warning | JAN | 40 min |
| Aug 15, 6:07 PM CDT | Severe Thunderstorm Warning | JAN | 53 min |
| Aug 15, 6:12 PM CDT | Severe Thunderstorm Warning | JAN | 48 min |
| Aug 17, 2:00 PM CDT | Flash Flood Watch | JAN | 38 hr |
| Aug 21, 3:54 AM CDT | Heat Advisory | JAN | 39 hr |
| Aug 22, 1:53 PM CDT | Mesoscale Discussion | SPC | 2 hr |
| Aug 22, 7:23 PM CDT | Severe Thunderstorm Warning | JAN | 52 min |
| Aug 22, 8:08 PM CDT | Severe Thunderstorm Warning | JAN | 67 min |
| Sep 23, 11:19 AM CDT | Fire Weather Watch | JAN | 32 hr |
| Sep 29, 2:58 PM CDT | Fire Weather Watch | JAN | 21 hr |
| Sep 30, 12:20 PM CDT | Fire Weather Watch | JAN | 15 hr |
| Sep 30, 12:20 PM CDT | Red Flag Warning | JAN | 7 hr |
| Oct 1, 3:21 AM CDT | Fire Weather Watch | JAN | 48 hr |
| Oct 1, 3:21 AM CDT | Red Flag Warning | JAN | 16 hr |
| Oct 2, 4:55 AM CDT | Fire Weather Watch | JAN | 23 hr |
| Oct 2, 4:55 AM CDT | Red Flag Warning | JAN | 14 hr |
| Oct 3, 3:45 AM CDT | Fire Weather Watch | JAN | 31 hr |
| Oct 3, 3:45 AM CDT | Red Flag Warning | JAN | 15 hr |
| Oct 4, 10:37 AM CDT | Fire Weather Watch | JAN | 41 hr |
| Oct 4, 10:37 AM CDT | Red Flag Warning | JAN | 8 hr |
| Oct 12, 12:48 PM CDT | Severe Thunderstorm Watch | SPC | 7 hr |
| Oct 12, 4:49 PM CDT | Severe Thunderstorm Warning | JAN | 56 min |
| Oct 12, 5:24 PM CDT | Mesoscale Discussion | SPC | 66 min |
| Oct 25, 3:54 PM CDT | Wind Advisory | JAN | 24 hr |
| Oct 26, 10:05 AM CDT | Mesoscale Discussion | SPC | 115 min |
| Oct 26, 2:15 PM CDT | Severe Thunderstorm Warning | JAN | 45 min |
| Oct 26, 3:12 PM CDT | Mesoscale Discussion | SPC | 93 min |
| Oct 26, 3:57 PM CDT | Severe Thunderstorm Warning | JAN | 36 min |
| Oct 27, 6:40 PM CDT | Mesoscale Discussion | SPC | 65 min |
| Nov 4, 3:10 PM CDT | Freeze Watch | JAN | 13 hr |
| Nov 5, 4:10 AM CDT | Freeze Watch | JAN | 23 hr |
| Nov 5, 4:10 AM CDT | Freeze Warning | JAN | 30 hr |
| Nov 6, 3:22 AM CDT | Freeze Warning | JAN | 30 hr |
| Nov 20, 7:56 PM CST | Dense Fog Advisory | JAN | 13 hr |
| Nov 21, 1:55 PM CST | Dense Fog Advisory | JAN | 19 hr |
| Nov 23, 12:13 PM CST | Mesoscale Discussion | SPC | 2 hr |
| Nov 23, 4:29 PM CST | Dense Fog Advisory | JAN | 16 hr |
| Nov 29, 1:02 PM CST | Mesoscale Discussion | SPC | 58 min |
| Nov 29, 3:29 PM CST | Mesoscale Discussion | SPC | 91 min |
| Nov 29, 4:41 PM CST | Tornado Watch | SPC | 4 hr |
| Nov 29, 4:45 PM CST | Tornado Warning | JAN | 22 min |
| Nov 29, 5:55 PM CST | Mesoscale Discussion | SPC | 95 min |
| Nov 29, 8:24 PM CST | Mesoscale Discussion | SPC | 96 min |
| Nov 29, 8:49 PM CST | Tornado Watch | SPC | 7 hr |
| Nov 29, 10:07 PM CST | Severe Thunderstorm Warning | JAN | 38 min |
| Nov 30, 12:25 AM CST | Severe Thunderstorm Warning | JAN | 65 min |
| Nov 30, 12:32 AM CST | Tornado Warning | JAN | 58 min |
| Nov 30, 1:26 AM CST | Tornado Warning | JAN | 64 min |
| Nov 30, 2:22 AM CST | Severe Thunderstorm Warning | JAN | 53 min |
| Dec 11, 2:31 PM CST | Mesoscale Discussion | SPC | 89 min |
| Dec 11, 3:11 PM CST | Wind Advisory | JAN | 27 hr |
| Dec 11, 3:18 PM CST | Tornado Watch | SPC | 6 hr |
| Dec 11, 6:13 PM CST | Mesoscale Discussion | SPC | 92 min |
| Dec 12, 5:33 AM CST | Wind Chill Advisory | JAN | 27 hr |
| Dec 31, 9:42 AM CST | Mesoscale Discussion | SPC | 2 hr |
| Dec 31, 1:34 PM CST | Tornado Watch | SPC | 6 hr |
| Dec 31, 3:19 PM CST | Severe Thunderstorm Warning | JAN | 56 min |
| Dec 31, 3:58 PM CST | Tornado Watch | SPC | 7 hr |
| Dec 31, 4:03 PM CST | Tornado Warning | JAN | 27 min |
| Dec 31, 4:37 PM CST | Tornado Warning | JAN | 23 min |
| Dec 31, 4:59 PM CST | Tornado Warning | JAN | 31 min |
| Dec 31, 5:12 PM CST | Tornado Warning | JAN | 33 min |
| Dec 31, 5:29 PM CST | Flash Flood Warning | JAN | 2 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 | 38 |
| Tornado Warning | 9 |
| Severe Thunderstorm Watch | 4 |
| Tornado Watch | 14 |
| Mesoscale Discussion | 32 |
| Flooding | |
| Flash Flood Warning | 4 |
| River Flood Warning | 2 |
| Flash Flood Watch | 1 |
| Winter | |
| Winter Storm Warning | 1 |
| Winter Storm Watch | 1 |
| Heat | |
| Excessive Heat Warning | 1 |
| Heat Advisory | 7 |
| Cold | |
| Freeze Warning | 2 |
| Hard Freeze Warning | 1 |
| Freeze Watch | 2 |
| Hard Freeze Watch | 1 |
| Wind Chill Advisory | 2 |
| Wind and dust | |
| Lake Wind Advisory | 4 |
| Wind Advisory | 2 |
| Fire | |
| Red Flag Warning | 5 |
| Fire Weather Watch | 7 |
| Fog and smoke | |
| Dense Fog Advisory | 6 |
The busiest days
Days with the most alerts issued, by UTC date.
Nearby
Alerts in force nowTornadoes on recordForecastThe radar archive20092011
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.