Alert archive / Georgia / Coweta County
Weather alerts in Coweta County, Georgia, 2020
134 weather alerts in 2020, from the National Weather Service and the Storm Prediction Center. An alert counts here when it covered this county.
Coweta County and its neighbors
Each county as a circle sized by its count in 2020. Tap one for its archive.
- Alerts
- 134
- Warnings
- 39
- Watches
- 15
- Advisories
- 22
- Busiest month
- February26 alerts
- Busiest day
- February 19, 20207 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 2 tornado warnings covering Coweta County in 2020 had a tornado report inside them; 2 of 2 tornado reports fell inside a warning, on average 12 minutes after it went out.
Coweta County, 2020
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| Tornado warnings | 2 | 1 | 50% | 2 | 100% | 12 min |
| Severe thunderstorm warnings | 13 | 11 | 15% | 37 | 70% | 41 min |
| Flash flood warnings | 5 | 2 | 60% | 0 |
Each office's whole area, 2020
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| NWS Atlanta, GA: tornado warnings | 60 | 19 | 68% | 46 | 57% | 10 min |
| NWS Atlanta, GA: severe thunderstorm warnings | 344 | 231 | 33% | 1,039 | 65% | 18 min |
| NWS Atlanta, GA: flash flood warnings | 74 | 36 | 51% | 209 | 67% | 137 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 3, 5:40 AM EST | Mesoscale Discussion | SPC | 3 hr |
| Jan 10, 2:47 PM EST | Wind Advisory | FFC | 31 hr |
| Jan 11, 1:20 PM EST | Mesoscale Discussion | SPC | 85 min |
| Jan 11, 1:42 PM EST | Tornado Watch | SPC | 7 hr |
| Jan 11, 4:16 PM EST | Mesoscale Discussion | SPC | 89 min |
| Jan 11, 4:47 PM EST | Severe Thunderstorm Warning | FFC | 43 min |
| Jan 11, 5:29 PM EST | Severe Thunderstorm Warning | FFC | 46 min |
| Jan 13, 7:59 AM EST | Flash Flood Warning | FFC | 4 hr |
| Jan 13, 10:12 AM EST | Flash Flood Watch | FFC | 36 hr |
| Jan 13, 10:18 PM EST | Special Weather Statement | FFC | 42 min |
| Jan 14, 12:42 AM EST | River Flood Warning | FFC | 34 hr |
| Jan 15, 5:11 AM EST | Dense Fog Advisory | FFC | 5 hr |
| Feb 4, 2:59 PM EST | Flash Flood Watch | FFC | 56 hr |
| Feb 6, 3:02 AM EST | Mesoscale Discussion | SPC | 88 min |
| Feb 6, 4:27 AM EST | Tornado Watch | SPC | 9 hr |
| Feb 6, 7:40 AM EST | Mesoscale Discussion | SPC | 95 min |
| Feb 6, 3:02 PM EST | Flash Flood Warning | FFC | 6 hr |
| Feb 6, 6:01 PM EST | River Flood Warning | FFC | 44 hr |
| Feb 6, 11:58 PM EST | River Flood Warning | FFC | 20 hr |
| Feb 8, 9:00 PM EST | Dense Fog Advisory | FFC | 4 hr |
| Feb 9, 12:54 AM EST | Freezing Fog Advisory | FFC | 8 hr |
| Feb 9, 9:10 AM EST | Freezing Fog Advisory | FFC | 50 min |
| Feb 10, 11:41 AM EST | Flash Flood Watch | FFC | 23 hr |
| Feb 11, 2:41 PM EST | Special Weather Statement | FFC | 34 min |
| Feb 13, 5:46 AM EST | Special Weather Statement | FFC | 59 min |
| Feb 13, 6:42 AM EST | Special Weather Statement | FFC | 63 min |
| Feb 17, 12:38 AM EST | Dense Fog Advisory | FFC | 10 hr |
| Feb 18, 10:21 AM EST | Special Weather Statement | FFC | 24 min |
| Feb 18, 11:11 AM EST | Special Weather Statement | FFC | 34 min |
| Feb 18, 11:58 AM EST | Flash Flood Watch | FFC | 16 hr |
| Feb 18, 7:18 PM EST | Special Weather Statement | FFC | 27 min |
| Feb 18, 7:44 PM EST | Special Weather Statement | FFC | 31 min |
| Feb 18, 11:31 PM EST | Special Weather Statement | FFC | 3 hr |
| Feb 18, 11:39 PM EST | River Flood Warning | FFC | 21 days |
| Feb 18, 11:39 PM EST | River Flood Warning | FFC | 7 hr |
| Feb 18, 11:57 PM EST | River Flood Warning | FFC | 10 hr |
| Feb 19, 12:20 AM EST | River Flood Warning | FFC | 26 hr |
| Feb 19, 9:15 PM EST | Flash Flood Watch | FFC | 22 hr |
| Mar 3, 8:25 AM EST | Mesoscale Discussion | SPC | 2 hr |
| Mar 3, 2:33 PM EST | Flash Flood Watch | FFC | 52 hr |
| Mar 5, 10:30 AM EST | River Flood Warning | FFC | 27 hr |
| Mar 5, 3:06 PM EST | Wind Advisory | FFC | 28 hr |
| Mar 5, 8:53 PM EST | River Flood Warning | FFC | 22 hr |
| Mar 18, 4:37 AM EDT | Dense Fog Advisory | FFC | 6 hr |
| Mar 19, 8:42 AM EDT | Dense Fog Advisory | FFC | 2 hr |
| Mar 24, 2:41 AM EDT | Dense Fog Advisory | FFC | 7 hr |
| Mar 31, 9:51 AM EDT | Tornado Watch | SPC | 6 hr |
| Mar 31, 10:31 AM EDT | Severe Thunderstorm Warning | FFC | 59 min |
| Mar 31, 11:16 AM EDT | Severe Thunderstorm Warning | FFC | 44 min |
| Apr 8, 3:29 PM EDT | Wind Advisory | FFC | 29 hr |
| Apr 9, 3:08 PM EDT | Red Flag Warning | FFC | 29 hr |
| Apr 11, 11:23 PM EDT | Wind Advisory | FFC | 35 hr |
| Apr 12, 11:28 PM EDT | Mesoscale Discussion | SPC | 92 min |
| Apr 12, 11:45 PM EDT | Tornado Watch | SPC | 8 hr |
| Apr 13, 1:42 AM EDT | Severe Thunderstorm Warning | FFC | 48 min |
| Apr 13, 2:24 AM EDT | Severe Thunderstorm Warning | FFC | 36 min |
| Apr 18, 3:57 PM EDT | Flash Flood Watch | FFC | 40 hr |
| Apr 19, 7:28 AM EDT | Special Weather Statement | FFC | 32 min |
| Apr 19, 7:58 AM EDT | Special Weather Statement | FFC | 47 min |
| Apr 19, 9:05 PM EDT | River Flood Warning | FFC | 19 hr |
| Apr 20, 7:44 AM EDT | River Flood Warning | FFC | 20 hr |
| Apr 26, 3:49 AM EDT | Wind Advisory | FFC | 17 hr |
| May 6, 3:39 AM EDT | Wind Advisory | FFC | 17 hr |
| May 17, 5:48 PM EDT | Special Weather Statement | FFC | 27 min |
| May 18, 2:31 PM EDT | Mesoscale Discussion | SPC | 119 min |
| May 22, 4:04 PM EDT | Special Weather Statement | FFC | 26 min |
| May 22, 5:43 PM EDT | Special Weather Statement | FFC | 47 min |
| May 22, 6:00 PM EDT | Severe Thunderstorm Warning | FFC | 45 min |
| May 23, 10:36 PM EDT | Special Weather Statement | FFC | 24 min |
| May 23, 11:36 PM EDT | Special Weather Statement | FFC | 24 min |
| May 23, 11:59 PM EDT | Special Weather Statement | FFC | 31 min |
| May 24, 4:33 PM EDT | Special Weather Statement | FFC | 27 min |
| May 24, 5:02 PM EDT | Special Weather Statement | FFC | 43 min |
| May 24, 5:19 PM EDT | Severe Thunderstorm Warning | FFC | 41 min |
| Jun 5, 3:16 PM EDT | Special Weather Statement | FFC | 29 min |
| Jun 10, 5:17 PM EDT | Severe Thunderstorm Warning | FFC | 28 min |
| Jun 14, 4:38 PM EDT | Special Weather Statement | FFC | 37 min |
| Jun 14, 5:16 PM EDT | Special Weather Statement | FFC | 29 min |
| Jun 14, 6:13 PM EDT | Mesoscale Discussion | SPC | 92 min |
| Jun 15, 1:45 PM EDT | Mesoscale Discussion | SPC | 2 hr |
| Jun 21, 5:22 PM EDT | Special Weather Statement | FFC | 23 min |
| Jun 21, 5:42 PM EDT | Special Weather Statement | FFC | 33 min |
| Jun 21, 5:48 PM EDT | Severe Thunderstorm Warning | FFC | 42 min |
| Jun 22, 4:37 PM EDT | Special Weather Statement | FFC | 53 min |
| Jun 22, 5:28 PM EDT | Special Weather Statement | FFC | 32 min |
| Jun 26, 12:16 AM EDT | Special Weather Statement | FFC | 44 min |
| Jun 29, 7:54 PM EDT | Special Weather Statement | FFC | 36 min |
| Jun 29, 8:31 PM EDT | Special Weather Statement | FFC | 29 min |
| Jun 30, 4:12 PM EDT | Special Weather Statement | FFC | 33 min |
| Jun 30, 4:48 PM EDT | Special Weather Statement | FFC | 42 min |
| Jul 6, 6:48 PM EDT | Special Weather Statement | FFC | 42 min |
| Jul 7, 10:46 PM EDT | Special Weather Statement | FFC | 29 min |
| Jul 18, 6:46 PM EDT | Special Weather Statement | FFC | 29 min |
| Jul 25, 4:00 PM EDT | Severe Thunderstorm Warning | FFC | 30 min |
| Aug 3, 12:42 PM EDT | Mesoscale Discussion | SPC | 2 hr |
| Aug 9, 9:11 PM EDT | Special Weather Statement | FFC | 49 min |
| Aug 10, 2:17 PM EDT | Mesoscale Discussion | SPC | 118 min |
| Aug 10, 3:54 PM EDT | Special Weather Statement | FFC | 36 min |
| Aug 10, 5:11 PM EDT | Severe Thunderstorm Warning | FFC | 20 min |
| Aug 11, 4:54 PM EDT | Special Weather Statement | FFC | 36 min |
| Aug 12, 3:38 PM EDT | Special Weather Statement | FFC | 37 min |
| Aug 18, 9:42 PM EDT | Severe Thunderstorm Warning | FFC | 36 min |
| Aug 19, 7:07 PM EDT | Special Weather Statement | FFC | 23 min |
| Aug 19, 7:28 PM EDT | Special Weather Statement | FFC | 32 min |
| Aug 19, 7:58 PM EDT | Special Weather Statement | FFC | 32 min |
| Aug 19, 8:07 PM EDT | Flash Flood Warning | FFC | 6 hr |
| Aug 25, 9:26 AM EDT | Flash Flood Warning | FFC | 3 hr |
| Sep 15, 3:24 PM EDT | Flash Flood Watch | FFC | 47 hr |
| Sep 16, 2:49 PM EDT | Wind Advisory | FFC | 19 hr |
| Sep 17, 2:49 AM EDT | Flash Flood Warning | FFC | 7 hr |
| Sep 17, 10:31 AM EDT | River Flood Warning | FFC | 12 hr |
| Sep 17, 3:32 PM EDT | River Flood Warning | FFC | 11 hr |
| Sep 26, 3:30 AM EDT | Dense Fog Advisory | FFC | 7 hr |
| Oct 10, 12:13 PM EDT | Mesoscale Discussion | SPC | 2 hr |
| Oct 10, 1:47 PM EDT | Tornado Watch | SPC | 7 hr |
| Oct 10, 4:54 PM EDT | Mesoscale Discussion | SPC | 96 min |
| Oct 10, 5:43 PM EDT | Special Weather Statement | FFC | 32 min |
| Oct 10, 6:10 PM EDT | Tornado Warning | FFC | 35 min |
| Oct 10, 6:33 PM EDT | Tornado Warning | FFC | 27 min |
| Oct 10, 7:17 PM EDT | Mesoscale Discussion | SPC | 118 min |
| Oct 10, 11:31 PM EDT | River Flood Warning | FFC | 45 hr |
| Oct 11, 2:01 AM EDT | River Flood Warning | FFC | 24 min |
| Oct 11, 7:03 AM EDT | River Flood Warning | FFC | 18 hr |
| Oct 26, 11:04 AM EDT | Flash Flood Watch | FFC | 68 hr |
| Oct 27, 5:09 PM EDT | Tropical Storm Watch | FFC | 18 hr |
| Oct 28, 11:04 AM EDT | Tropical Storm Warning | FFC | 24 hr |
| Oct 28, 8:43 PM EDT | Wind Advisory | FFC | 14 hr |
| Oct 29, 7:43 PM EDT | Wind Advisory | FFC | 8 hr |
| Nov 2, 2:17 PM EST | Frost Advisory | FFC | 19 hr |
| Nov 17, 12:15 PM EST | Freeze Warning | FFC | 20 hr |
| Nov 30, 3:55 AM EST | Wind Advisory | FFC | 9 hr |
| Dec 12, 10:38 PM EST | Dense Fog Advisory | FFC | 10 hr |
| Dec 14, 5:00 AM EST | Special Weather Statement | FFC | 45 min |
| Dec 31, 6:22 AM EST | Dense Fog Advisory | FFC | 5 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 | 13 |
| Tornado Warning | 2 |
| Tornado Watch | 5 |
| Mesoscale Discussion | 15 |
| Special Weather Statement | 43 |
| Flooding | |
| Flash Flood Warning | 5 |
| River Flood Warning | 16 |
| Flash Flood Watch | 9 |
| Cold | |
| Freeze Warning | 1 |
| Frost Advisory | 1 |
| Wind and dust | |
| Wind Advisory | 10 |
| Fire | |
| Red Flag Warning | 1 |
| Fog and smoke | |
| Dense Fog Advisory | 9 |
| Freezing Fog Advisory | 2 |
| Tropical | |
| Tropical Storm Warning | 1 |
| Tropical Storm Watch | 1 |
The busiest days
Days with the most alerts issued, by UTC date.
Nearby
Alerts in force nowTornadoes on recordForecastThe radar archive20192021
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.