Alert archive / Georgia / Chatham County
Weather alerts in Chatham County, Georgia, 2013
128 weather alerts in 2013, from the National Weather Service and the Storm Prediction Center. An alert counts here when it covered this county.
Chatham County and its neighbors
Each county as a circle sized by its count in 2013. Tap one for its archive.
- Alerts
- 128
- Warnings
- 29
- Watches
- 7
- Advisories
- 27
- Busiest month
- June30 alerts
- Busiest day
- September 4, 20137 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 1 tornado warnings covering Chatham County in 2013 had a tornado report inside them.
Chatham County, 2013
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| Tornado warnings | 1 | 0 | 100% | 0 | ||
| Severe thunderstorm warnings | 14 | 9 | 36% | 21 | 81% | 24 min |
| Flash flood warnings | 8 | 6 | 25% | 33 | 97% | 132 min |
Each office's whole area, 2013
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| NWS Charleston, SC: tornado warnings | 15 | 1 | 93% | 3 | 67% | 10 min |
| NWS Charleston, SC: severe thunderstorm warnings | 132 | 79 | 40% | 271 | 81% | 25 min |
| NWS Charleston, SC: flash flood warnings | 44 | 32 | 27% | 154 | 92% | 116 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, Eastern Time. Each opens its own page with the text, the map, the radar and the sounding.
| Issued | Product | Office | Lasted |
|---|---|---|---|
| Jan 30, 8:44 PM EST | Mesoscale Discussion | SPC | 61 min |
| Jan 30, 8:56 PM EST | Tornado Watch | SPC | 3 hr |
| Jan 30, 9:15 PM EST | Severe Thunderstorm Warning | CHS | 60 min |
| Jan 30, 10:08 PM EST | Severe Thunderstorm Warning | CHS | 52 min |
| Jan 30, 10:42 PM EST | Mesoscale Discussion | SPC | 93 min |
| Feb 7, 7:19 PM EST | Mesoscale Discussion | SPC | 86 min |
| Feb 11, 6:52 PM EST | Special Weather Statement | CHS | 23 min |
| Feb 11, 7:15 PM EST | Special Weather Statement | CHS | 15 min |
| Feb 11, 7:33 PM EST | Special Weather Statement | CHS | 12 min |
| Feb 12, 4:02 PM EST | Special Weather Statement | CHS | 28 min |
| Feb 12, 11:46 PM EST | Mesoscale Discussion | SPC | 119 min |
| Feb 13, 3:57 AM EST | Special Weather Statement | CHS | 48 min |
| Feb 13, 5:31 AM EST | Tornado Watch | SPC | 3 hr |
| Feb 16, 10:19 AM EST | River Flood Warning | CHS | 30 days |
| Feb 26, 6:16 AM EST | Tornado Warning | CHS | 44 min |
| Feb 26, 6:49 AM EST | Tornado Watch | SPC | 8 hr |
| Feb 26, 7:10 AM EST | Areal Flood Advisory | CHS | 110 min |
| Feb 26, 11:38 AM EST | Mesoscale Discussion | SPC | 67 min |
| Mar 18, 7:29 PM EDT | Severe Thunderstorm Watch | SPC | 6 hr |
| Mar 18, 9:58 PM EDT | Severe Thunderstorm Warning | CHS | 62 min |
| Mar 18, 10:54 PM EDT | Special Weather Statement | CHS | 66 min |
| Mar 24, 2:58 AM EDT | Special Weather Statement | CHS | 47 min |
| Mar 24, 9:44 AM EDT | Areal Flood Advisory | CHS | 2 hr |
| Mar 24, 10:51 AM EDT | Areal Flood Advisory | CHS | 84 min |
| Mar 24, 12:03 PM EDT | River Flood Warning | CHS | 32 days |
| Apr 12, 12:46 AM EDT | Mesoscale Discussion | SPC | 89 min |
| Apr 12, 1:06 AM EDT | Tornado Watch | SPC | 6 hr |
| Apr 19, 1:57 PM EDT | Mesoscale Discussion | SPC | 2 hr |
| Apr 19, 2:36 PM EDT | Severe Thunderstorm Watch | SPC | 7 hr |
| Apr 19, 4:29 PM EDT | Mesoscale Discussion | SPC | 2 hr |
| Apr 19, 5:18 PM EDT | Severe Thunderstorm Warning | CHS | 57 min |
| Apr 19, 6:21 PM EDT | Special Weather Statement | CHS | 39 min |
| Apr 19, 6:37 PM EDT | Mesoscale Discussion | SPC | 113 min |
| Apr 29, 1:38 PM EDT | Mesoscale Discussion | SPC | 97 min |
| Apr 29, 4:16 PM EDT | Severe Thunderstorm Warning | CHS | 59 min |
| Apr 29, 5:35 PM EDT | Areal Flood Advisory | CHS | 115 min |
| May 4, 4:39 AM EDT | Areal Flood Advisory | CHS | 111 min |
| May 9, 11:00 AM EDT | River Flood Warning | CHS | 48 hr |
| May 14, 10:36 AM EDT | River Flood Warning | CHS | 9 days |
| May 18, 4:17 PM EDT | Severe Thunderstorm Warning | CHS | 43 min |
| Jun 4, 2:15 PM EDT | Areal Flood Advisory | CHS | 90 min |
| Jun 4, 2:20 PM EDT | Severe Thunderstorm Warning | CHS | 40 min |
| Jun 5, 11:59 AM EDT | Areal Flood Advisory | CHS | 3 hr |
| Jun 5, 12:42 PM EDT | Special Weather Statement | CHS | 63 min |
| Jun 6, 3:58 PM EDT | Areal Flood Advisory | CHS | 77 min |
| Jun 6, 5:54 PM EDT | Mesoscale Discussion | SPC | 96 min |
| Jun 6, 6:24 PM EDT | Special Weather Statement | CHS | 96 min |
| Jun 6, 6:38 PM EDT | Areal Flood Advisory | CHS | 2 hr |
| Jun 6, 7:32 PM EDT | Mesoscale Discussion | SPC | 118 min |
| Jun 7, 1:16 AM EDT | Areal Flood Advisory | CHS | 119 min |
| Jun 10, 3:25 PM EDT | Special Weather Statement | CHS | 35 min |
| Jun 10, 3:56 PM EDT | Special Weather Statement | CHS | 34 min |
| Jun 10, 6:31 PM EDT | Special Weather Statement | CHS | 44 min |
| Jun 10, 6:39 PM EDT | Severe Thunderstorm Warning | CHS | 66 min |
| Jun 10, 7:20 PM EDT | Mesoscale Discussion | SPC | 85 min |
| Jun 12, 9:47 PM EDT | River Flood Warning | CHS | 61 days |
| Jun 18, 2:02 PM EDT | Mesoscale Discussion | SPC | 88 min |
| Jun 19, 5:14 PM EDT | Special Weather Statement | CHS | 46 min |
| Jun 19, 5:34 PM EDT | Severe Thunderstorm Warning | CHS | 56 min |
| Jun 19, 6:51 PM EDT | Areal Flood Advisory | CHS | 114 min |
| Jun 22, 4:31 PM EDT | Areal Flood Advisory | CHS | 59 min |
| Jun 25, 7:23 PM EDT | Special Weather Statement | CHS | 52 min |
| Jun 26, 4:12 PM EDT | Special Weather Statement | CHS | 48 min |
| Jun 26, 4:31 PM EDT | Severe Thunderstorm Warning | CHS | 44 min |
| Jun 26, 5:13 PM EDT | Severe Thunderstorm Warning | CHS | 47 min |
| Jun 27, 3:39 PM EDT | Mesoscale Discussion | SPC | 2 hr |
| Jun 27, 5:23 PM EDT | Special Weather Statement | CHS | 52 min |
| Jun 27, 5:30 PM EDT | Severe Thunderstorm Warning | CHS | 60 min |
| Jun 27, 6:25 PM EDT | Mesoscale Discussion | SPC | 65 min |
| Jun 30, 1:03 PM EDT | Mesoscale Discussion | SPC | 2 hr |
| Jul 1, 2:25 PM EDT | Special Weather Statement | CHS | 35 min |
| Jul 1, 3:06 PM EDT | Areal Flood Advisory | CHS | 84 min |
| Jul 2, 1:53 PM EDT | Areal Flood Advisory | CHS | 52 min |
| Jul 12, 4:37 PM EDT | Areal Flood Advisory | CHS | 83 min |
| Jul 12, 5:04 PM EDT | Flash Flood Warning | CHS | 6 hr |
| Jul 12, 9:25 PM EDT | Flash Flood Warning | CHS | 2 hr |
| Jul 13, 2:36 PM EDT | Flash Flood Warning | CHS | 114 min |
| Jul 13, 4:28 PM EDT | Flash Flood Warning | CHS | 2 hr |
| Jul 14, 5:31 AM EDT | Areal Flood Advisory | CHS | 89 min |
| Jul 22, 4:12 PM EDT | Special Weather Statement | CHS | 33 min |
| Jul 23, 9:26 PM EDT | Special Weather Statement | CHS | 34 min |
| Jul 25, 4:42 PM EDT | Special Weather Statement | CHS | 48 min |
| Jul 25, 5:10 PM EDT | Special Weather Statement | CHS | 50 min |
| Jul 25, 5:13 PM EDT | Areal Flood Advisory | CHS | 2 hr |
| Jul 25, 5:35 PM EDT | Special Weather Statement | CHS | 40 min |
| Jul 25, 6:11 PM EDT | Special Weather Statement | CHS | 49 min |
| Jul 25, 7:48 PM EDT | Special Weather Statement | CHS | 42 min |
| Jul 31, 3:57 PM EDT | Special Weather Statement | CHS | 48 min |
| Jul 31, 4:53 PM EDT | Areal Flood Advisory | CHS | 112 min |
| Jul 31, 5:44 PM EDT | Flash Flood Warning | CHS | 61 min |
| Jul 31, 6:44 PM EDT | Flash Flood Warning | CHS | 61 min |
| Aug 13, 4:13 PM EDT | Mesoscale Discussion | SPC | 92 min |
| Aug 13, 8:50 PM EDT | Special Weather Statement | CHS | 25 min |
| Aug 13, 9:20 PM EDT | Special Weather Statement | CHS | 25 min |
| Aug 13, 9:42 PM EDT | Special Weather Statement | CHS | 33 min |
| Aug 14, 2:18 PM EDT | Mesoscale Discussion | SPC | 2 hr |
| Aug 14, 6:02 PM EDT | Special Weather Statement | CHS | 43 min |
| Aug 14, 6:55 PM EDT | Areal Flood Advisory | CHS | 50 min |
| Aug 14, 8:56 PM EDT | Special Weather Statement | CHS | 34 min |
| Aug 16, 2:03 PM EDT | Mesoscale Discussion | SPC | 2 hr |
| Aug 16, 3:56 PM EDT | Areal Flood Advisory | CHS | 94 min |
| Aug 16, 4:24 PM EDT | Flash Flood Warning | CHS | 9 hr |
| Aug 16, 5:09 PM EDT | Flash Flood Warning | CHS | 5 hr |
| Aug 17, 3:44 PM EDT | Special Weather Statement | CHS | 31 min |
| Aug 17, 11:22 PM EDT | Special Weather Statement | CHS | 53 min |
| Aug 18, 2:36 PM EDT | River Flood Warning | CHS | 21 days |
| Aug 19, 2:19 PM EDT | Mesoscale Discussion | SPC | 2 hr |
| Aug 20, 2:39 PM EDT | Areal Flood Advisory | CHS | 96 min |
| Aug 21, 11:46 AM EDT | Areal Flood Advisory | CHS | 119 min |
| Aug 21, 2:12 PM EDT | Areal Flood Advisory | CHS | 3 hr |
| Aug 21, 2:27 PM EDT | Areal Flood Advisory | CHS | 3 hr |
| Aug 22, 4:34 AM EDT | Areal Flood Advisory | CHS | 56 min |
| Sep 2, 7:53 PM EDT | Special Weather Statement | CHS | 37 min |
| Sep 4, 2:38 PM EDT | Special Weather Statement | CHS | 37 min |
| Sep 4, 3:16 PM EDT | Special Weather Statement | CHS | 29 min |
| Sep 4, 3:47 PM EDT | Areal Flood Advisory | CHS | 88 min |
| Sep 4, 4:09 PM EDT | Special Weather Statement | CHS | 36 min |
| Sep 4, 4:14 PM EDT | Special Weather Statement | CHS | 31 min |
| Sep 4, 5:19 PM EDT | Special Weather Statement | CHS | 26 min |
| Sep 4, 5:33 PM EDT | Severe Thunderstorm Warning | CHS | 57 min |
| Sep 5, 6:01 PM EDT | Special Weather Statement | CHS | 44 min |
| Sep 15, 10:16 AM EDT | Special Weather Statement | CHS | 44 min |
| Oct 8, 7:40 AM EDT | Areal Flood Advisory | CHS | 95 min |
| Nov 1, 9:31 PM EDT | Mesoscale Discussion | SPC | 104 min |
| Nov 26, 3:43 PM EST | Mesoscale Discussion | SPC | 2 hr |
| Nov 26, 5:40 PM EST | Tornado Watch | SPC | 7 hr |
| Nov 26, 6:53 PM EST | Severe Thunderstorm Warning | CHS | 52 min |
| Nov 26, 7:48 PM EST | Mesoscale Discussion | SPC | 87 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 | 14 |
| Tornado Warning | 1 |
| Severe Thunderstorm Watch | 2 |
| Tornado Watch | 5 |
| Mesoscale Discussion | 24 |
| Special Weather Statement | 41 |
| Flooding | |
| Flash Flood Warning | 8 |
| River Flood Warning | 6 |
| Areal Flood Advisory | 27 |
The busiest days
Days with the most alerts issued, by UTC date.
Nearby
Alerts in force nowTornadoes on recordForecastThe radar archive20122014
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.