Alert archive / Georgia / Houston County
Weather alerts in Houston County, Georgia, 2020
111 weather alerts in 2020, from the National Weather Service and the Storm Prediction Center. An alert counts here when it covered this county.
Houston County and its neighbors
Each county as a circle sized by its count in 2020. Tap one for its archive.
- Alerts
- 111
- Warnings
- 40
- Watches
- 12
- Advisories
- 16
- Busiest month
- February17 alerts
- Busiest day
- February 6, 20209 alerts
Over time
By month
Warning verification
How often warnings here had a storm report inside them, and how much warning the reports had.
Houston County, 2020
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| Tornado warnings | 0 | 0 | ||||
| Severe thunderstorm warnings | 19 | 11 | 42% | 37 | 84% | 22 min |
| Flash flood warnings | 5 | 3 | 40% | 3 | 100% | 187 min |
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, 1:33 PM EST | Special Weather Statement | FFC | 27 min |
| Jan 3, 2:02 PM EST | Mesoscale Discussion | SPC | 118 min |
| Jan 4, 9:59 AM EST | River Flood Warning | FFC | 29 hr |
| Jan 10, 2:47 PM EST | Wind Advisory | FFC | 31 hr |
| Jan 11, 1:42 PM EST | Tornado Watch | SPC | 7 hr |
| Jan 11, 6:36 PM EST | Mesoscale Discussion | SPC | 84 min |
| Jan 11, 6:58 PM EST | Severe Thunderstorm Warning | FFC | 47 min |
| Jan 11, 7:14 PM EST | Severe Thunderstorm Warning | FFC | 46 min |
| Jan 11, 7:54 PM EST | Severe Thunderstorm Warning | FFC | 51 min |
| Jan 11, 8:16 PM EST | Special Weather Statement | FFC | 14 min |
| Jan 13, 1:34 AM EST | Dense Fog Advisory | FFC | 7 hr |
| Jan 13, 2:23 PM EST | River Flood Warning | FFC | 4 days |
| Jan 14, 5:15 AM EST | Dense Fog Advisory | FFC | 5 hr |
| Jan 15, 9:27 PM EST | Dense Fog Advisory | FFC | 12 hr |
| Feb 4, 2:59 PM EST | Flash Flood Watch | FFC | 56 hr |
| Feb 6, 4:27 AM EST | Tornado Watch | SPC | 9 hr |
| Feb 6, 11:00 AM EST | Mesoscale Discussion | SPC | 2 hr |
| Feb 6, 11:45 AM EST | Mesoscale Discussion | SPC | 90 min |
| Feb 6, 12:17 PM EST | Tornado Watch | SPC | 8 hr |
| Feb 6, 12:49 PM EST | Special Weather Statement | FFC | 26 min |
| Feb 6, 1:49 PM EST | Special Weather Statement | FFC | 26 min |
| Feb 6, 2:24 PM EST | Special Weather Statement | FFC | 36 min |
| Feb 6, 2:32 PM EST | Mesoscale Discussion | SPC | 58 min |
| Feb 6, 4:56 PM EST | Flash Flood Warning | FFC | 6 hr |
| Feb 6, 7:25 PM EST | River Flood Warning | FFC | 9 days |
| Feb 7, 11:02 AM EST | River Flood Warning | FFC | 26 hr |
| Feb 13, 10:00 AM EST | Special Weather Statement | FFC | 45 min |
| Feb 18, 9:50 AM EST | Special Weather Statement | FFC | 25 min |
| Feb 18, 12:13 PM EST | River Flood Warning | FFC | 9 days |
| Feb 19, 1:40 PM EST | River Flood Warning | FFC | 30 hr |
| Feb 19, 9:15 PM EST | Flash Flood Watch | FFC | 22 hr |
| Mar 3, 1:52 PM EST | Mesoscale Discussion | SPC | 2 hr |
| Mar 3, 2:33 PM EST | Flash Flood Watch | FFC | 52 hr |
| Mar 3, 9:34 PM EST | River Flood Warning | FFC | 21 days |
| Mar 4, 5:58 PM EST | River Flood Warning | FFC | 21 days |
| Mar 5, 3:06 PM EST | Wind Advisory | FFC | 28 hr |
| Mar 18, 4:37 AM EDT | Dense Fog Advisory | FFC | 6 hr |
| Mar 31, 9:51 AM EDT | Tornado Watch | SPC | 6 hr |
| Mar 31, 1:33 PM EDT | Severe Thunderstorm Warning | FFC | 42 min |
| Apr 8, 6:41 PM EDT | Mesoscale Discussion | SPC | 94 min |
| Apr 8, 6:55 PM EDT | Severe Thunderstorm Warning | FFC | 50 min |
| 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, 11:45 PM EDT | Tornado Watch | SPC | 8 hr |
| Apr 13, 2:39 AM EDT | Mesoscale Discussion | SPC | 96 min |
| Apr 13, 2:54 AM EDT | Severe Thunderstorm Warning | FFC | 51 min |
| Apr 13, 3:01 AM EDT | Severe Thunderstorm Warning | FFC | 44 min |
| Apr 18, 3:57 PM EDT | Flash Flood Watch | FFC | 40 hr |
| Apr 19, 11:16 AM EDT | Severe Thunderstorm Warning | FFC | 29 min |
| Apr 19, 11:51 AM EDT | Special Weather Statement | FFC | 24 min |
| Apr 19, 7:23 PM EDT | Flash Flood Warning | FFC | 11 hr |
| Apr 19, 9:17 PM EDT | River Flood Warning | FFC | 21 days |
| Apr 21, 3:55 AM EDT | River Flood Warning | FFC | 11 hr |
| Apr 26, 3:49 AM EDT | Wind Advisory | FFC | 17 hr |
| Apr 29, 11:19 PM EDT | Flash Flood Warning | FFC | 5 hr |
| May 6, 3:39 AM EDT | Wind Advisory | FFC | 17 hr |
| May 10, 2:48 PM EDT | Fire Weather Watch | FFC | 13 hr |
| May 11, 3:45 AM EDT | Red Flag Warning | FFC | 16 hr |
| May 18, 2:31 PM EDT | Mesoscale Discussion | SPC | 119 min |
| May 22, 7:29 PM EDT | Severe Thunderstorm Warning | FFC | 46 min |
| May 22, 7:59 PM EDT | Severe Thunderstorm Warning | FFC | 34 min |
| May 24, 5:53 PM EDT | Special Weather Statement | FFC | 37 min |
| May 24, 9:04 PM EDT | Special Weather Statement | FFC | 26 min |
| Jun 9, 1:48 PM EDT | Special Weather Statement | FFC | 27 min |
| Jun 9, 2:09 PM EDT | Special Weather Statement | FFC | 51 min |
| Jun 10, 7:10 PM EDT | Special Weather Statement | FFC | 50 min |
| Jun 15, 1:45 PM EDT | Mesoscale Discussion | SPC | 2 hr |
| Jun 22, 5:18 PM EDT | Severe Thunderstorm Warning | FFC | 42 min |
| Jun 22, 5:48 PM EDT | Severe Thunderstorm Warning | FFC | 42 min |
| Jun 24, 2:36 PM EDT | Severe Thunderstorm Watch | SPC | 7 hr |
| Jun 24, 6:27 PM EDT | Mesoscale Discussion | SPC | 93 min |
| Jun 24, 11:38 PM EDT | Special Weather Statement | FFC | 37 min |
| Jun 24, 11:48 PM EDT | Severe Thunderstorm Warning | FFC | 42 min |
| Jun 25, 5:28 PM EDT | Special Weather Statement | FFC | 32 min |
| Jun 25, 7:22 PM EDT | Mesoscale Discussion | SPC | 83 min |
| Jul 1, 12:45 PM EDT | Severe Thunderstorm Warning | FFC | 30 min |
| Jul 1, 1:17 PM EDT | Mesoscale Discussion | SPC | 118 min |
| Jul 6, 5:39 PM EDT | Special Weather Statement | FFC | 66 min |
| Jul 6, 6:53 PM EDT | Special Weather Statement | FFC | 52 min |
| Jul 6, 7:43 PM EDT | Special Weather Statement | FFC | 62 min |
| Jul 6, 10:31 PM EDT | Special Weather Statement | FFC | 59 min |
| Jul 15, 7:30 PM EDT | Severe Thunderstorm Warning | FFC | 45 min |
| Jul 15, 8:57 PM EDT | Special Weather Statement | FFC | 33 min |
| Jul 21, 4:19 PM EDT | Severe Thunderstorm Warning | FFC | 41 min |
| Aug 8, 3:30 PM EDT | Special Weather Statement | FFC | 45 min |
| Aug 10, 5:07 PM EDT | Severe Thunderstorm Warning | FFC | 38 min |
| Aug 10, 6:16 PM EDT | Special Weather Statement | FFC | 44 min |
| Aug 11, 7:23 PM EDT | Special Weather Statement | FFC | 37 min |
| Aug 12, 3:06 PM EDT | Special Weather Statement | FFC | 24 min |
| Aug 12, 3:52 PM EDT | Special Weather Statement | FFC | 38 min |
| Aug 24, 9:05 PM EDT | Mesoscale Discussion | SPC | 85 min |
| Aug 30, 4:36 PM EDT | Special Weather Statement | FFC | 24 min |
| Aug 30, 4:40 PM EDT | Severe Thunderstorm Warning | FFC | 35 min |
| Aug 30, 5:01 PM EDT | Severe Thunderstorm Warning | FFC | 29 min |
| Sep 11, 7:28 PM EDT | Special Weather Statement | FFC | 32 min |
| 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, 12:00 AM EDT | Flash Flood Warning | FFC | 11 hr |
| Sep 17, 5:16 AM EDT | River Flood Warning | FFC | 4 days |
| Sep 17, 10:35 PM EDT | River Flood Warning | FFC | 27 hr |
| Oct 7, 5:10 AM EDT | Dense Fog Advisory | FFC | 6 hr |
| Oct 10, 7:17 PM EDT | Mesoscale Discussion | SPC | 118 min |
| Oct 13, 10:18 AM EDT | River Flood Warning | FFC | 3 hr |
| Oct 28, 8:43 PM EDT | Wind Advisory | FFC | 14 hr |
| Nov 2, 2:17 PM EST | Frost Advisory | FFC | 19 hr |
| Nov 12, 3:49 AM EST | Special Weather Statement | FFC | 41 min |
| Nov 12, 4:16 AM EST | Flash Flood Warning | FFC | 6 hr |
| Nov 15, 6:49 AM EST | Dense Fog Advisory | FFC | 4 hr |
| Nov 17, 12:15 PM EST | Frost Advisory | FFC | 20 hr |
| Nov 30, 3:55 AM EST | Wind Advisory | FFC | 9 hr |
| Dec 1, 8:44 AM EST | River Flood Warning | FFC | 21 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 | 19 |
| Severe Thunderstorm Watch | 1 |
| Tornado Watch | 5 |
| Mesoscale Discussion | 15 |
| Special Weather Statement | 28 |
| Flooding | |
| Flash Flood Warning | 5 |
| River Flood Warning | 14 |
| Flash Flood Watch | 5 |
| Cold | |
| Frost Advisory | 2 |
| Wind and dust | |
| Wind Advisory | 8 |
| Fire | |
| Red Flag Warning | 2 |
| Fire Weather Watch | 1 |
| Fog and smoke | |
| Dense Fog Advisory | 6 |
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.