Alert archive / Mississippi / Perry County
Weather alerts in Perry County, Mississippi, 2010
132 weather alerts in 2010, from the National Weather Service and the Storm Prediction Center. An alert counts here when it covered this county.
Perry County and its neighbors
Each county as a circle sized by its count in 2010. Tap one for its archive.
- Alerts
- 132
- Warnings
- 42
- Watches
- 41
- Advisories
- 20
- Busiest month
- January25 alerts
- Busiest day
- April 24, 20107 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 2 tornado warnings covering Perry County in 2010 had a tornado report inside them.
Perry County, 2010
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| Tornado warnings | 2 | 0 | 100% | 0 | ||
| Severe thunderstorm warnings | 7 | 0 | 100% | 1 | 0% | |
| Flash flood warnings | 3 | 2 | 33% | 1 | 100% | 22 min |
Each office's whole area, 2010
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| NWS Mobile, AL: tornado warnings | 44 | 0 | 100% | 6 | 0% | |
| NWS Mobile, AL: severe thunderstorm warnings | 150 | 24 | 84% | 43 | 53% | 18 min |
| NWS Mobile, AL: flash flood warnings | 24 | 14 | 42% | 41 | 88% | 81 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, 3:31 PM CST | Hard Freeze Watch | MOB | 22 hr |
| Jan 3, 4:19 AM CST | Hard Freeze Warning | MOB | 26 hr |
| Jan 3, 1:55 PM CST | Hard Freeze Watch | MOB | 17 hr |
| Jan 4, 4:32 AM CST | Hard Freeze Warning | MOB | 28 hr |
| Jan 4, 3:42 PM CST | Hard Freeze Watch | MOB | 13 hr |
| Jan 5, 4:26 AM CST | Hard Freeze Warning | MOB | 29 hr |
| Jan 6, 3:53 PM CST | Hard Freeze Warning | MOB | 42 hr |
| Jan 7, 5:23 AM CST | Winter Weather Advisory | MOB | 13 hr |
| Jan 7, 5:45 AM CST | Hard Freeze Watch | MOB | 8 hr |
| Jan 7, 2:13 PM CST | Hard Freeze Warning | MOB | 44 hr |
| Jan 8, 4:31 AM CST | Hard Freeze Watch | MOB | 9 hr |
| Jan 8, 1:39 PM CST | Hard Freeze Warning | MOB | 43 hr |
| Jan 9, 5:59 AM CST | Hard Freeze Warning | MOB | 50 hr |
| Jan 10, 5:25 AM CST | Hard Freeze Watch | MOB | 24 hr |
| Jan 11, 5:28 AM CST | Hard Freeze Watch | MOB | 24 hr |
| Jan 11, 5:28 AM CST | Hard Freeze Warning | MOB | 28 hr |
| Jan 12, 5:51 AM CST | Hard Freeze Warning | MOB | 26 hr |
| 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, 1:13 AM CST | Mesoscale Discussion | SPC | 62 min |
| Jan 21, 2:09 AM CST | Tornado Watch | SPC | 7 hr |
| Jan 23, 11:54 PM CST | Mesoscale Discussion | SPC | 96 min |
| Jan 24, 6:01 AM CST | Mesoscale Discussion | SPC | 119 min |
| Jan 24, 6:28 AM CST | Tornado Watch | SPC | 6 hr |
| Feb 3, 3:00 PM CST | Flash Flood Watch | MOB | 39 hr |
| Feb 4, 9:29 AM CST | River Flood Warning | MOB | 8 days |
| Feb 4, 7:20 PM CST | Flash Flood Warning | MOB | 115 min |
| Feb 4, 9:08 PM CST | Flash Flood Warning | MOB | 72 min |
| Feb 10, 3:51 PM CST | Winter Storm Watch | MOB | 22 hr |
| Feb 11, 1:21 PM CST | Winter Storm Warning | MOB | 26 hr |
| Feb 11, 11:30 PM CST | Mesoscale Discussion | SPC | 5 hr |
| Feb 12, 5:33 AM CST | Mesoscale Discussion | SPC | 4 hr |
| Feb 14, 5:23 AM CST | Winter Weather Advisory | MOB | 23 hr |
| Feb 16, 2:02 PM CST | Hard Freeze Warning | MOB | 18 hr |
| Feb 22, 12:19 AM CST | Severe Thunderstorm Warning | MOB | 41 min |
| Mar 9, 2:48 PM CST | Flash Flood Watch | MOB | 37 hr |
| Mar 10, 1:05 PM CST | Tornado Watch | SPC | 7 hr |
| Mar 10, 3:24 PM CST | Mesoscale Discussion | SPC | 66 min |
| Mar 12, 2:10 AM CST | Severe Thunderstorm Watch | SPC | 6 hr |
| Mar 24, 4:05 AM CDT | Dense Fog Advisory | MOB | 5 hr |
| Apr 4, 3:31 AM CDT | Dense Fog Advisory | MOB | 5 hr |
| Apr 4, 11:40 PM CDT | Dense Fog Advisory | MOB | 9 hr |
| Apr 23, 4:25 AM CDT | Dense Fog Advisory | MOB | 4 hr |
| Apr 23, 3:09 PM CDT | Wind Advisory | MOB | 27 hr |
| Apr 23, 3:47 PM CDT | Mesoscale Discussion | SPC | 58 min |
| Apr 23, 7:39 PM CDT | Mesoscale Discussion | SPC | 36 min |
| Apr 24, 6:15 AM CDT | Tornado Watch | SPC | 7 hr |
| Apr 24, 8:02 AM CDT | Severe Thunderstorm Warning | MOB | 43 min |
| Apr 24, 10:10 AM CDT | Tornado Warning | MOB | 50 min |
| Apr 24, 10:28 AM CDT | Mesoscale Discussion | SPC | 92 min |
| Apr 24, 10:47 AM CDT | Tornado Warning | MOB | 58 min |
| Apr 24, 12:47 PM CDT | Tornado Watch | SPC | 7 hr |
| Apr 24, 7:19 PM CDT | Mesoscale Discussion | SPC | 56 min |
| May 2, 3:39 AM CDT | Flash Flood Watch | MOB | 36 hr |
| May 2, 8:01 AM CDT | Tornado Watch | SPC | 7 hr |
| May 2, 10:24 AM CDT | Wind Advisory | MOB | 9 hr |
| May 20, 10:12 PM CDT | Severe Thunderstorm Warning | MOB | 33 min |
| May 20, 10:48 PM CDT | Flash Flood Warning | MOB | 117 min |
| May 21, 1:06 PM CDT | Mesoscale Discussion | SPC | 54 min |
| May 21, 8:00 PM CDT | Severe Thunderstorm Warning | MOB | 45 min |
| May 29, 10:25 AM CDT | Mesoscale Discussion | SPC | 65 min |
| 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, 4:36 PM CDT | Mesoscale Discussion | SPC | 54 min |
| May 30, 4:39 PM CDT | Mesoscale Discussion | SPC | 96 min |
| Jun 1, 5:18 PM CDT | Severe Thunderstorm Warning | MOB | 42 min |
| Jun 5, 4:28 PM CDT | Severe Thunderstorm Warning | MOB | 47 min |
| Jun 18, 1:06 PM CDT | Mesoscale Discussion | SPC | 114 min |
| Jun 19, 4:15 AM CDT | Heat Advisory | MOB | 14 hr |
| Jul 23, 8:03 AM CDT | Heat Advisory | MOB | 11 hr |
| Jul 25, 10:50 AM CDT | Mesoscale Discussion | SPC | 55 min |
| Jul 29, 1:50 PM CDT | Heat Advisory | MOB | 29 hr |
| Jul 29, 1:50 PM CDT | Heat Advisory | MOB | 53 hr |
| Jul 31, 4:47 AM CDT | Excessive Heat Watch | MOB | 11 hr |
| Jul 31, 3:40 PM CDT | Excessive Heat Watch | MOB | 23 hr |
| Jul 31, 3:40 PM CDT | Excessive Heat Warning | MOB | 27 hr |
| Aug 1, 2:22 PM CDT | Excessive Heat Watch | MOB | 38 hr |
| Aug 1, 2:22 PM CDT | Excessive Heat Warning | MOB | 28 hr |
| Aug 2, 3:21 PM CDT | Excessive Heat Watch | MOB | 24 hr |
| Aug 2, 3:21 PM CDT | Excessive Heat Warning | MOB | 27 hr |
| Aug 3, 3:35 PM CDT | Excessive Heat Warning | MOB | 26 hr |
| Aug 3, 5:17 PM CDT | Severe Thunderstorm Warning | MOB | 33 min |
| Aug 4, 3:42 PM CDT | Excessive Heat Warning | MOB | 26 hr |
| Aug 5, 3:24 PM CDT | Heat Advisory | MOB | 27 hr |
| Aug 7, 3:44 PM CDT | Heat Advisory | MOB | 26 hr |
| Aug 8, 5:10 AM CDT | Heat Advisory | MOB | 37 hr |
| Aug 15, 1:40 PM CDT | Heat Advisory | MOB | 4 hr |
| Aug 21, 3:58 PM CDT | Heat Advisory | MOB | 27 hr |
| Aug 22, 1:53 PM CDT | Mesoscale Discussion | SPC | 2 hr |
| Sep 30, 6:26 AM CDT | Fire Weather Watch | MOB | 33 hr |
| Sep 30, 6:26 AM CDT | Red Flag Warning | MOB | 12 hr |
| Sep 30, 3:08 PM CDT | Fire Weather Watch | MOB | 15 hr |
| Oct 1, 6:05 AM CDT | Red Flag Warning | MOB | 12 hr |
| Oct 1, 2:58 PM CDT | Fire Weather Watch | MOB | 39 hr |
| Oct 1, 2:58 PM CDT | Red Flag Warning | MOB | 27 hr |
| Oct 2, 1:20 PM CDT | Red Flag Warning | MOB | 29 hr |
| Oct 3, 5:49 AM CDT | Fire Weather Watch | MOB | 24 hr |
| Oct 4, 5:57 AM CDT | Fire Weather Watch | MOB | 24 hr |
| Oct 4, 5:57 AM CDT | Red Flag Warning | MOB | 12 hr |
| Oct 5, 6:08 AM CDT | Fire Weather Watch | MOB | 8 hr |
| Oct 5, 6:08 AM CDT | Red Flag Warning | MOB | 12 hr |
| Oct 5, 1:44 PM CDT | Fire Weather Watch | MOB | 25 hr |
| Oct 5, 1:44 PM CDT | Red Flag Warning | MOB | 29 hr |
| Oct 12, 6:17 AM CDT | Fire Weather Watch | MOB | 43 hr |
| Oct 24, 5:33 PM CDT | Mesoscale Discussion | SPC | 87 min |
| Oct 27, 6:40 PM CDT | Mesoscale Discussion | SPC | 65 min |
| Nov 4, 4:24 AM CDT | Freeze Watch | MOB | 34 hr |
| Nov 5, 2:45 PM CDT | Freeze Watch | MOB | 24 hr |
| Nov 5, 2:45 PM CDT | Freeze Warning | MOB | 17 hr |
| Nov 23, 4:03 PM CST | Dense Fog Advisory | MOB | 17 hr |
| Nov 29, 3:29 PM CST | Mesoscale Discussion | SPC | 91 min |
| Nov 30, 3:17 AM CST | Mesoscale Discussion | SPC | 58 min |
| Nov 30, 3:49 AM CST | Tornado Watch | SPC | 8 hr |
| Nov 30, 6:30 AM CST | Mesoscale Discussion | SPC | 90 min |
| Dec 8, 3:46 PM CST | Hard Freeze Warning | MOB | 17 hr |
| Dec 11, 4:13 AM CST | Hard Freeze Watch | MOB | 25 hr |
| Dec 11, 6:33 AM CST | Fire Weather Watch | MOB | 31 hr |
| Dec 11, 3:11 PM CST | Wind Advisory | MOB | 48 hr |
| Dec 11, 6:13 PM CST | Mesoscale Discussion | SPC | 92 min |
| Dec 11, 8:22 PM CST | Mesoscale Discussion | SPC | 83 min |
| Dec 12, 4:45 AM CST | Hard Freeze Watch | MOB | 24 hr |
| Dec 12, 4:45 AM CST | Hard Freeze Warning | MOB | 24 hr |
| Dec 12, 4:50 AM CST | Wind Chill Advisory | MOB | 23 hr |
| Dec 12, 1:55 PM CST | Red Flag Warning | MOB | 28 hr |
| Dec 13, 4:22 AM CST | Hard Freeze Warning | MOB | 28 hr |
| Dec 26, 3:51 AM CST | Hard Freeze Watch | MOB | 10 hr |
| Dec 26, 3:51 AM CST | Hard Freeze Watch | MOB | 25 hr |
| Dec 27, 3:57 AM CST | Hard Freeze Warning | MOB | 28 hr |
| Dec 31, 9:42 AM CST | Mesoscale Discussion | SPC | 2 hr |
| Dec 31, 11:39 AM CST | Tornado Watch | SPC | 7 hr |
| Dec 31, 2:58 PM CST | Mesoscale Discussion | SPC | 92 min |
By product
Every kind of product issued here, grouped by hazard. Each opens the same place narrowed to that product.
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.