Alert archive / Georgia / McDuffie County
Weather alerts in McDuffie County, Georgia, 2019
99 weather alerts in 2019, from the National Weather Service and the Storm Prediction Center. An alert counts here when it covered this county.
McDuffie County and its neighbors
Each county as a circle sized by its count in 2019. Tap one for its archive.
- Alerts
- 99
- Warnings
- 18
- Watches
- 11
- Advisories
- 40
- Busiest month
- June23 alerts
- Busiest day
- June 22, 20199 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 McDuffie County in 2019 had a tornado report inside them.
McDuffie County, 2019
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| Tornado warnings | 1 | 0 | 100% | 0 | ||
| Severe thunderstorm warnings | 13 | 12 | 8% | 3 | 100% | 21 min |
| Flash flood warnings | 0 | 0 |
Each office's whole area, 2019
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| NWS Columbia, SC: tornado warnings | 20 | 6 | 70% | 20 | 75% | 14 min |
| NWS Columbia, SC: severe thunderstorm warnings | 155 | 114 | 26% | 469 | 84% | 22 min |
| NWS Columbia, SC: flash flood warnings | 5 | 3 | 40% | 5 | 60% | 53 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 4, 12:41 PM EST | Lake Wind Advisory | CAE | 24 hr |
| Jan 9, 3:41 AM EST | Lake Wind Advisory | CAE | 14 hr |
| Jan 19, 3:06 AM EST | Lake Wind Advisory | CAE | 39 hr |
| Jan 23, 10:20 PM EST | Lake Wind Advisory | CAE | 18 hr |
| Feb 11, 1:49 PM EST | Lake Wind Advisory | CAE | 31 hr |
| Feb 11, 9:00 PM EST | Dense Fog Advisory | CAE | 13 hr |
| Feb 12, 3:02 PM EST | Special Weather Statement | CAE | 58 min |
| Feb 12, 3:46 PM EST | Special Weather Statement | CAE | 89 min |
| Feb 12, 4:11 PM EST | Special Weather Statement | CAE | 49 min |
| Feb 21, 12:15 AM EST | Dense Fog Advisory | CAE | 11 hr |
| Feb 22, 1:26 AM EST | Dense Fog Advisory | CAE | 10 hr |
| Feb 24, 2:27 AM EST | Lake Wind Advisory | CAE | 17 hr |
| Feb 24, 2:43 AM EST | Dense Fog Advisory | CAE | 5 hr |
| Mar 1, 4:34 AM EST | Dense Smoke Advisory | CAE | 13 min |
| Mar 1, 4:47 AM EST | Dense Fog Advisory | CAE | 6 hr |
| Mar 3, 10:20 AM EST | Lake Wind Advisory | CAE | 14 hr |
| Mar 3, 3:19 PM EST | Mesoscale Discussion | SPC | 116 min |
| Mar 3, 3:35 PM EST | Tornado Watch | SPC | 7 hr |
| Mar 4, 2:28 PM EST | Freeze Watch | CAE | 12 hr |
| Mar 5, 2:50 AM EST | Freeze Warning | CAE | 31 hr |
| Mar 6, 1:42 PM EST | Freeze Warning | CAE | 19 hr |
| Mar 19, 3:42 AM EDT | Frost Advisory | CAE | 29 hr |
| Mar 27, 8:14 AM EDT | Frost Advisory | CAE | 25 hr |
| Apr 8, 1:12 PM EDT | Mesoscale Discussion | SPC | 3 hr |
| Apr 8, 2:32 PM EDT | Severe Thunderstorm Watch | SPC | 7 hr |
| Apr 8, 3:03 PM EDT | Special Weather Statement | CAE | 57 min |
| Apr 8, 4:07 PM EDT | Severe Thunderstorm Warning | CAE | 53 min |
| Apr 13, 7:41 PM EDT | Lake Wind Advisory | CAE | 39 hr |
| Apr 14, 11:48 AM EDT | Mesoscale Discussion | SPC | 117 min |
| Apr 14, 12:54 PM EDT | Tornado Watch | SPC | 6 hr |
| Apr 14, 2:19 PM EDT | Severe Thunderstorm Warning | CAE | 56 min |
| Apr 14, 2:31 PM EDT | Tornado Warning | CAE | 29 min |
| Apr 14, 10:19 PM EDT | Special Weather Statement | CAE | 56 min |
| Apr 18, 1:39 PM EDT | Lake Wind Advisory | CAE | 34 hr |
| Apr 19, 10:06 AM EDT | Mesoscale Discussion | SPC | 84 min |
| Apr 19, 10:44 AM EDT | Tornado Watch | SPC | 5 hr |
| Apr 19, 11:35 AM EDT | Severe Thunderstorm Warning | CAE | 55 min |
| Apr 19, 1:19 PM EDT | Mesoscale Discussion | SPC | 86 min |
| Apr 19, 2:59 PM EDT | Special Weather Statement | CAE | 46 min |
| Apr 20, 4:01 AM EDT | Lake Wind Advisory | CAE | 16 hr |
| Apr 25, 1:35 PM EDT | Lake Wind Advisory | CAE | 33 hr |
| May 2, 5:56 AM EDT | Dense Fog Advisory | CAE | 3 hr |
| May 4, 3:56 AM EDT | Dense Fog Advisory | CAE | 6 hr |
| May 4, 12:35 PM EDT | Mesoscale Discussion | SPC | 85 min |
| May 11, 6:09 PM EDT | Special Weather Statement | CAE | 51 min |
| May 11, 6:11 PM EDT | Mesoscale Discussion | SPC | 94 min |
| Jun 5, 12:52 PM EDT | Mesoscale Discussion | SPC | 113 min |
| Jun 8, 2:27 PM EDT | Areal Flood Advisory | CAE | 3 hr |
| Jun 8, 4:50 PM EDT | Areal Flood Advisory | CAE | 3 hr |
| Jun 8, 6:53 PM EDT | Special Weather Statement | CAE | 52 min |
| Jun 9, 1:45 PM EDT | Areal Flood Advisory | CAE | 3 hr |
| Jun 18, 8:48 PM EDT | Areal Flood Advisory | CAE | 117 min |
| Jun 20, 3:17 AM EDT | Lake Wind Advisory | CAE | 18 hr |
| Jun 20, 12:02 PM EDT | Mesoscale Discussion | SPC | 118 min |
| Jun 20, 1:44 PM EDT | Severe Thunderstorm Watch | SPC | 8 hr |
| Jun 20, 4:09 PM EDT | Severe Thunderstorm Warning | CAE | 51 min |
| Jun 20, 4:47 PM EDT | Mesoscale Discussion | SPC | 88 min |
| Jun 20, 5:00 PM EDT | Severe Thunderstorm Warning | CAE | 30 min |
| Jun 21, 10:02 PM EDT | Mesoscale Discussion | SPC | 118 min |
| Jun 22, 2:39 AM EDT | Mesoscale Discussion | SPC | 96 min |
| Jun 22, 1:01 PM EDT | Mesoscale Discussion | SPC | 119 min |
| Jun 22, 2:08 PM EDT | Severe Thunderstorm Watch | SPC | 7 hr |
| Jun 22, 3:39 PM EDT | Severe Thunderstorm Warning | CAE | 51 min |
| Jun 22, 4:23 PM EDT | Severe Thunderstorm Warning | CAE | 52 min |
| Jun 22, 4:34 PM EDT | Severe Thunderstorm Warning | CAE | 41 min |
| Jun 22, 4:35 PM EDT | Mesoscale Discussion | SPC | 85 min |
| Jun 22, 5:15 PM EDT | Severe Thunderstorm Warning | CAE | 45 min |
| Jun 23, 4:41 PM EDT | Special Weather Statement | CAE | 49 min |
| Jun 24, 9:24 PM EDT | Severe Thunderstorm Warning | CAE | 51 min |
| Jul 18, 4:08 PM EDT | Severe Thunderstorm Warning | CAE | 52 min |
| Jul 18, 4:19 PM EDT | Mesoscale Discussion | SPC | 116 min |
| Aug 4, 8:14 AM EDT | Areal Flood Advisory | CAE | 2 hr |
| Aug 10, 4:03 PM EDT | Special Weather Statement | CAE | 27 min |
| Aug 19, 10:24 PM EDT | Areal Flood Advisory | CAE | 2 hr |
| Aug 23, 3:26 PM EDT | Special Weather Statement | CAE | 49 min |
| Aug 23, 8:09 PM EDT | Special Weather Statement | CAE | 51 min |
| Sep 10, 6:06 PM EDT | Severe Thunderstorm Warning | CAE | 39 min |
| Oct 19, 2:42 AM EDT | Lake Wind Advisory | CAE | 23 hr |
| Oct 21, 5:04 AM EDT | Dense Fog Advisory | CAE | 5 hr |
| Oct 31, 11:32 AM EDT | Lake Wind Advisory | CAE | 14 hr |
| Oct 31, 1:25 PM EDT | Mesoscale Discussion | SPC | 2 hr |
| Oct 31, 3:54 PM EDT | Severe Thunderstorm Watch | SPC | 5 hr |
| Oct 31, 4:20 PM EDT | Special Weather Statement | CAE | 55 min |
| Oct 31, 4:43 PM EDT | Severe Thunderstorm Warning | CAE | 47 min |
| Nov 1, 1:53 PM EDT | Frost Advisory | CAE | 19 hr |
| Nov 7, 11:38 AM EST | Freeze Watch | CAE | 15 hr |
| Nov 8, 3:03 AM EST | Freeze Warning | CAE | 29 hr |
| Nov 9, 1:21 PM EST | Freeze Warning | CAE | 20 hr |
| Nov 11, 1:48 PM EST | Lake Wind Advisory | CAE | 41 hr |
| Nov 15, 10:26 AM EST | Lake Wind Advisory | CAE | 45 hr |
| Nov 23, 1:04 PM EST | Lake Wind Advisory | CAE | 18 hr |
| Nov 30, 2:14 PM EST | Lake Wind Advisory | CAE | 53 hr |
| Dec 13, 2:11 PM EST | Flash Flood Watch | CAE | 14 hr |
| Dec 13, 2:18 PM EST | Lake Wind Advisory | CAE | 35 hr |
| Dec 14, 1:12 AM EST | Areal Flood Advisory | CAE | 2 hr |
| Dec 21, 2:51 PM EST | Flash Flood Watch | CAE | 59 hr |
| Dec 28, 5:37 AM EST | Dense Fog Advisory | CAE | 2 hr |
| Dec 29, 4:45 AM EST | Dense Fog Advisory | CAE | 3 hr |
| Dec 30, 4:52 AM EST | Special Weather Statement | CAE | 113 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 | 13 |
| Tornado Warning | 1 |
| Severe Thunderstorm Watch | 4 |
| Tornado Watch | 3 |
| Mesoscale Discussion | 16 |
| Special Weather Statement | 14 |
| Flooding | |
| Flash Flood Watch | 2 |
| Areal Flood Advisory | 7 |
| Cold | |
| Freeze Warning | 4 |
| Freeze Watch | 2 |
| Frost Advisory | 3 |
| Wind and dust | |
| Lake Wind Advisory | 19 |
| Fog and smoke | |
| Dense Fog Advisory | 10 |
| Dense Smoke Advisory | 1 |
The busiest days
Days with the most alerts issued, by UTC date.
Nearby
Alerts in force nowTornadoes on recordForecastThe radar archive20182020
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.