Alert archive / Georgia / Jefferson County
Weather alerts in Jefferson County, Georgia, 2023
123 weather alerts in 2023, from the National Weather Service and the Storm Prediction Center. An alert counts here when it covered this county.
Jefferson County and its neighbors
Each county as a circle sized by its count in 2023. Tap one for its archive.
- Alerts
- 123
- Warnings
- 26
- Watches
- 23
- Advisories
- 28
- Busiest month
- August36 alerts
- Busiest day
- August 7, 20239 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 reports fell inside a warning.
Jefferson County, 2023
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| Tornado warnings | 0 | 1 | 0% | |||
| Severe thunderstorm warnings | 14 | 7 | 50% | 7 | 71% | 19 min |
| Flash flood warnings | 1 | 1 | 0% | 0 |
Each office's whole area, 2023
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| NWS Atlanta, GA: tornado warnings | 34 | 11 | 68% | 61 | 57% | 16 min |
| NWS Atlanta, GA: severe thunderstorm warnings | 605 | 325 | 46% | 1,761 | 70% | 21 min |
| NWS Atlanta, GA: flash flood warnings | 42 | 19 | 55% | 123 | 72% | 169 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 |
|---|---|---|---|
| Dec 31, 9:27 PM EST | Dense Fog Advisory | FFC | 14 hr |
| Jan 1, 7:52 PM EST | Dense Fog Advisory | FFC | 14 hr |
| Jan 4, 3:59 AM EST | Tornado Watch | SPC | 7 hr |
| Jan 4, 8:07 AM EST | Mesoscale Discussion | SPC | 113 min |
| Jan 4, 8:49 AM EST | Severe Thunderstorm Warning | FFC | 26 min |
| Jan 4, 9:12 AM EST | Severe Thunderstorm Warning | FFC | 33 min |
| Jan 12, 3:39 AM EST | Wind Advisory | FFC | 19 hr |
| Jan 12, 1:06 PM EST | Tornado Watch | SPC | 8 hr |
| Jan 17, 6:42 PM EST | Dense Fog Advisory | FFC | 18 hr |
| Jan 24, 2:59 AM EST | Wind Advisory | FFC | 35 hr |
| Jan 30, 8:38 PM EST | Dense Fog Advisory | FFC | 15 hr |
| Feb 11, 3:56 AM EST | Wind Advisory | FFC | 24 hr |
| Mar 2, 5:43 AM EST | Wind Advisory | FFC | 40 hr |
| Mar 13, 4:04 AM EDT | Freeze Watch | FFC | 31 hr |
| Mar 14, 11:04 AM EDT | Freeze Warning | FFC | 24 hr |
| Mar 14, 3:30 PM EDT | Freeze Watch | FFC | 20 hr |
| Mar 15, 11:06 AM EDT | Freeze Warning | FFC | 22 hr |
| Mar 18, 3:36 AM EDT | Freeze Watch | FFC | 23 hr |
| Mar 19, 3:04 AM EDT | Freeze Watch | FFC | 36 hr |
| Mar 19, 3:04 AM EDT | Freeze Warning | FFC | 33 hr |
| Mar 20, 2:44 PM EDT | Freeze Warning | FFC | 19 hr |
| Mar 23, 6:13 AM EDT | Dense Fog Advisory | FFC | 4 hr |
| Mar 25, 10:38 AM EDT | Mesoscale Discussion | SPC | 67 min |
| Mar 26, 6:04 AM EDT | Mesoscale Discussion | SPC | 116 min |
| Mar 26, 6:32 AM EDT | Severe Thunderstorm Watch | SPC | 6 hr |
| Mar 26, 8:56 AM EDT | Flood Watch | FFC | 29 hr |
| Mar 26, 10:04 AM EDT | Severe Thunderstorm Warning | FFC | 26 min |
| Mar 26, 10:29 AM EDT | Mesoscale Discussion | SPC | 91 min |
| Mar 27, 2:12 AM EDT | Special Weather Statement | FFC | 33 min |
| Mar 27, 7:29 AM EDT | Tornado Watch | SPC | 4 hr |
| Mar 27, 11:02 AM EDT | Severe Thunderstorm Watch | SPC | 7 hr |
| Mar 28, 7:48 PM EDT | River Flood Warning | FFC | 18 hr |
| Apr 1, 2:23 PM EDT | Special Weather Statement | FFC | 37 min |
| Apr 4, 5:27 AM EDT | Dense Fog Advisory | FFC | 6 hr |
| Apr 7, 6:06 PM EDT | Severe Thunderstorm Warning | FFC | 24 min |
| May 2, 3:55 AM EDT | Wind Advisory | FFC | 16 hr |
| May 2, 9:35 AM EDT | Red Flag Warning | FFC | 10 hr |
| May 3, 3:41 AM EDT | Red Flag Warning | FFC | 16 hr |
| May 12, 11:31 PM EDT | Dense Fog Advisory | FFC | 10 hr |
| Jun 6, 5:55 PM EDT | Mesoscale Discussion | SPC | 95 min |
| Jun 7, 6:10 PM EDT | Special Weather Statement | FFC | 35 min |
| Jun 11, 2:31 PM EDT | Special Weather Statement | FFC | 29 min |
| Jun 12, 5:03 AM EDT | Special Weather Statement | FFC | 27 min |
| Jun 12, 2:25 PM EDT | Mesoscale Discussion | SPC | 95 min |
| Jun 20, 2:12 PM EDT | Flood Watch | FFC | 61 hr |
| Jun 20, 4:30 PM EDT | Special Weather Statement | FFC | 30 min |
| Jun 20, 9:16 PM EDT | Special Weather Statement | FFC | 29 min |
| Jun 25, 8:29 PM EDT | Special Weather Statement | FFC | 31 min |
| Jun 26, 1:59 PM EDT | Mesoscale Discussion | SPC | 3 hr |
| Jun 30, 3:21 PM EDT | Heat Advisory | FFC | 53 hr |
| Jul 3, 3:43 AM EDT | Heat Advisory | FFC | 16 hr |
| Jul 5, 2:38 PM EDT | Mesoscale Discussion | SPC | 2 hr |
| Jul 15, 7:42 PM EDT | Severe Thunderstorm Warning | FFC | 48 min |
| Jul 15, 8:27 PM EDT | Special Weather Statement | FFC | 33 min |
| Jul 15, 9:21 PM EDT | Special Weather Statement | FFC | 24 min |
| Jul 15, 9:46 PM EDT | Special Weather Statement | FFC | 44 min |
| Jul 19, 9:15 PM EDT | Heat Advisory | FFC | 23 hr |
| Jul 20, 5:59 PM EDT | Mesoscale Discussion | SPC | 3 hr |
| Jul 20, 6:43 PM EDT | Severe Thunderstorm Watch | SPC | 6 hr |
| Jul 20, 8:24 PM EDT | Severe Thunderstorm Warning | FFC | 51 min |
| Jul 21, 3:28 AM EDT | Heat Advisory | FFC | 17 hr |
| Jul 21, 5:55 PM EDT | Severe Thunderstorm Watch | SPC | 6 hr |
| Jul 21, 6:50 PM EDT | Mesoscale Discussion | SPC | 85 min |
| Jul 23, 10:06 AM EDT | Mesoscale Discussion | SPC | 114 min |
| Jul 29, 2:37 PM EDT | Heat Advisory | FFC | 29 min |
| Jul 29, 3:06 PM EDT | Heat Advisory | FFC | 27 hr |
| Jul 29, 11:44 PM EDT | Special Weather Statement | FFC | 31 min |
| Jul 30, 12:15 AM EDT | Special Weather Statement | FFC | 30 min |
| Jul 30, 5:34 PM EDT | Severe Thunderstorm Warning | FFC | 41 min |
| Aug 1, 6:57 PM EDT | Special Weather Statement | FFC | 33 min |
| Aug 3, 3:05 PM EDT | Severe Thunderstorm Watch | SPC | 7 hr |
| Aug 3, 6:56 PM EDT | Severe Thunderstorm Warning | FFC | 49 min |
| Aug 3, 7:18 PM EDT | Mesoscale Discussion | SPC | 117 min |
| Aug 6, 1:11 PM EDT | Mesoscale Discussion | SPC | 94 min |
| Aug 6, 3:34 PM EDT | Severe Thunderstorm Watch | SPC | 5 hr |
| Aug 6, 4:46 PM EDT | Special Weather Statement | FFC | 29 min |
| Aug 6, 4:47 PM EDT | Mesoscale Discussion | SPC | 88 min |
| Aug 7, 3:16 AM EDT | Heat Advisory | FFC | 17 hr |
| Aug 7, 3:59 PM EDT | Mesoscale Discussion | SPC | 2 hr |
| Aug 7, 4:16 PM EDT | Special Weather Statement | FFC | 29 min |
| Aug 7, 4:30 PM EDT | Severe Thunderstorm Watch | SPC | 7 hr |
| Aug 7, 5:10 PM EDT | Special Weather Statement | FFC | 35 min |
| Aug 7, 6:22 PM EDT | Severe Thunderstorm Warning | FFC | 38 min |
| Aug 7, 6:59 PM EDT | Special Weather Statement | FFC | 46 min |
| Aug 7, 7:05 PM EDT | Severe Thunderstorm Warning | FFC | 40 min |
| Aug 7, 7:33 PM EDT | Special Weather Statement | FFC | 27 min |
| Aug 7, 8:01 PM EDT | Special Weather Statement | FFC | 29 min |
| Aug 11, 3:31 PM EDT | Excessive Heat Watch | FFC | 23 hr |
| Aug 11, 3:31 PM EDT | Heat Advisory | FFC | 28 hr |
| Aug 12, 2:45 PM EDT | Excessive Heat Watch | FFC | 23 hr |
| Aug 12, 2:45 PM EDT | Excessive Heat Warning | FFC | 29 hr |
| Aug 12, 6:13 PM EDT | Mesoscale Discussion | SPC | 2 hr |
| Aug 13, 2:12 PM EDT | Excessive Heat Warning | FFC | 30 hr |
| Aug 14, 2:29 PM EDT | Heat Advisory | FFC | 30 hr |
| Aug 15, 1:50 PM EDT | Mesoscale Discussion | SPC | 85 min |
| Aug 15, 4:27 PM EDT | Mesoscale Discussion | SPC | 93 min |
| Aug 15, 5:14 PM EDT | Severe Thunderstorm Warning | FFC | 46 min |
| Aug 20, 2:34 PM EDT | Heat Advisory | FFC | 31 hr |
| Aug 21, 4:15 AM EDT | Heat Advisory | FFC | 42 hr |
| Aug 24, 2:15 PM EDT | Heat Advisory | FFC | 3 days |
| Aug 27, 3:01 PM EDT | Special Weather Statement | FFC | 29 min |
| Aug 27, 10:19 PM EDT | Special Weather Statement | FFC | 26 min |
| Aug 29, 3:08 AM EDT | Flood Watch | FFC | 41 hr |
| Aug 29, 6:24 AM EDT | Tropical Storm Watch | FFC | 23 hr |
| Aug 29, 11:04 AM EDT | Tropical Storm Warning | FFC | 33 hr |
| Sep 7, 2:25 PM EDT | Mesoscale Discussion | SPC | 3 hr |
| Sep 7, 2:59 PM EDT | Severe Thunderstorm Warning | FFC | 31 min |
| Sep 7, 3:35 PM EDT | Severe Thunderstorm Warning | FFC | 25 min |
| Sep 9, 6:30 PM EDT | Special Weather Statement | FFC | 30 min |
| Sep 11, 7:19 PM EDT | Severe Thunderstorm Warning | FFC | 26 min |
| Sep 11, 7:46 PM EDT | Special Weather Statement | FFC | 29 min |
| Sep 12, 9:08 PM EDT | Special Weather Statement | FFC | 37 min |
| Sep 15, 6:50 AM EDT | Flash Flood Warning | FFC | 5 hr |
| Sep 15, 7:51 AM EDT | Special Weather Statement | FFC | 54 min |
| Oct 6, 3:32 AM EDT | Fire Weather Watch | FFC | 23 hr |
| Oct 20, 1:51 PM EDT | Mesoscale Discussion | SPC | 114 min |
| Oct 30, 3:58 AM EDT | Dense Fog Advisory | FFC | 7 hr |
| Oct 31, 4:00 AM EDT | Freeze Watch | FFC | 24 hr |
| Nov 1, 3:50 AM EDT | Freeze Warning | FFC | 30 hr |
| Nov 1, 3:01 PM EDT | Freeze Watch | FFC | 24 hr |
| Nov 2, 2:36 PM EDT | Frost Advisory | FFC | 19 hr |
| Dec 4, 3:40 AM EST | Dense Fog Advisory | FFC | 5 hr |
| Dec 17, 3:55 AM EST | Wind Advisory | FFC | 13 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 | 14 |
| Severe Thunderstorm Watch | 7 |
| Tornado Watch | 3 |
| Mesoscale Discussion | 20 |
| Special Weather Statement | 26 |
| Flooding | |
| Flash Flood Warning | 1 |
| River Flood Warning | 1 |
| Flood Watch | 3 |
| Heat | |
| Excessive Heat Warning | 2 |
| Excessive Heat Watch | 2 |
| Heat Advisory | 12 |
| Cold | |
| Freeze Warning | 5 |
| Freeze Watch | 6 |
| Frost Advisory | 1 |
| Wind and dust | |
| Wind Advisory | 6 |
| Fire | |
| Red Flag Warning | 2 |
| Fire Weather Watch | 1 |
| Fog and smoke | |
| Dense Fog Advisory | 9 |
| 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 archive20222024
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.