Alert archive / Georgia / Chattahoochee County
Weather alerts in Chattahoochee County, Georgia, 2017
105 weather alerts in 2017, from the National Weather Service and the Storm Prediction Center. An alert counts here when it covered this county.
Chattahoochee County and its neighbors
Each county as a circle sized by its count in 2017. Tap one for its archive.
- Alerts
- 105
- Warnings
- 21
- Watches
- 18
- Advisories
- 17
- Busiest month
- April27 alerts
- Busiest day
- April 5, 201711 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 Chattahoochee County in 2017 had a tornado report inside them.
Chattahoochee County, 2017
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| Tornado warnings | 2 | 1 | 50% | 0 | ||
| Severe thunderstorm warnings | 12 | 7 | 42% | 1 | 100% | 19 min |
| Flash flood warnings | 2 | 1 | 50% | 2 | 100% | 28 min |
Each office's whole area, 2017
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| NWS Atlanta, GA: tornado warnings | 80 | 39 | 51% | 140 | 59% | 11 min |
| NWS Atlanta, GA: severe thunderstorm warnings | 351 | 230 | 34% | 893 | 69% | 17 min |
| NWS Atlanta, GA: flash flood warnings | 49 | 18 | 63% | 57 | 74% | 96 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 2, 1:07 AM EST | Special Weather Statement | FFC | 23 min |
| Jan 2, 4:40 AM EST | Flood Watch | FFC | 26 hr |
| Jan 2, 1:59 PM EST | Mesoscale Discussion | SPC | 2 hr |
| Jan 2, 4:46 PM EST | Tornado Watch | SPC | 8 hr |
| Jan 2, 6:06 PM EST | Severe Thunderstorm Warning | FFC | 39 min |
| Jan 2, 6:36 PM EST | Mesoscale Discussion | SPC | 114 min |
| Jan 2, 7:26 PM EST | Special Weather Statement | FFC | 64 min |
| Jan 2, 7:45 PM EST | Flash Flood Warning | FFC | 6 hr |
| Jan 19, 8:04 AM EST | Dense Fog Advisory | FFC | 3 hr |
| Jan 21, 8:41 AM EST | Mesoscale Discussion | SPC | 94 min |
| Jan 21, 9:04 AM EST | Tornado Watch | SPC | 6 hr |
| Jan 21, 10:19 AM EST | Mesoscale Discussion | SPC | 86 min |
| Jan 21, 10:22 AM EST | Special Weather Statement | FFC | 38 min |
| Jan 21, 10:47 PM EST | Flash Flood Watch | FFC | 20 hr |
| Jan 21, 10:57 PM EST | Mesoscale Discussion | SPC | 93 min |
| Jan 22, 12:49 AM EST | Mesoscale Discussion | SPC | 116 min |
| Jan 22, 3:46 AM EST | Mesoscale Discussion | SPC | 119 min |
| Jan 22, 9:56 AM EST | Wind Advisory | FFC | 39 hr |
| Jan 22, 12:47 PM EST | Tornado Watch | SPC | 7 hr |
| Jan 22, 1:31 PM EST | Mesoscale Discussion | SPC | 59 min |
| Jan 22, 3:28 PM EST | Mesoscale Discussion | SPC | 92 min |
| Feb 7, 3:50 PM EST | Severe Thunderstorm Warning | FFC | 40 min |
| Feb 7, 4:27 PM EST | Severe Thunderstorm Warning | FFC | 48 min |
| Mar 1, 9:15 PM EST | Special Weather Statement | FFC | 45 min |
| Mar 3, 11:31 AM EST | Red Flag Warning | FFC | 7 hr |
| Mar 10, 5:12 AM EST | Special Weather Statement | FFC | 48 min |
| Mar 10, 5:55 AM EST | Special Weather Statement | FFC | 50 min |
| Mar 13, 2:39 PM EDT | Wind Advisory | FFC | 29 hr |
| Mar 14, 3:34 AM EDT | Freeze Warning | FFC | 31 hr |
| Mar 14, 3:34 PM EDT | Freeze Warning | FFC | 42 hr |
| Apr 3, 10:25 AM EDT | Mesoscale Discussion | SPC | 65 min |
| Apr 3, 10:50 AM EDT | Severe Thunderstorm Watch | SPC | 7 hr |
| Apr 3, 11:33 AM EDT | Severe Thunderstorm Warning | FFC | 27 min |
| Apr 3, 11:39 AM EDT | Tornado Warning | FFC | 36 min |
| Apr 5, 2:37 AM EDT | Severe Thunderstorm Watch | SPC | 6 hr |
| Apr 5, 4:25 AM EDT | Special Weather Statement | FFC | 35 min |
| Apr 5, 4:41 AM EDT | Mesoscale Discussion | SPC | 2 hr |
| Apr 5, 4:49 AM EDT | Severe Thunderstorm Warning | FFC | 27 min |
| Apr 5, 7:15 AM EDT | Mesoscale Discussion | SPC | 90 min |
| Apr 5, 7:54 AM EDT | Tornado Watch | SPC | 8 hr |
| Apr 5, 10:43 AM EDT | Mesoscale Discussion | SPC | 2 hr |
| Apr 5, 11:38 AM EDT | Severe Thunderstorm Warning | FFC | 67 min |
| Apr 5, 12:54 PM EDT | Tornado Watch | SPC | 10 hr |
| Apr 5, 3:12 PM EDT | Mesoscale Discussion | SPC | 93 min |
| Apr 5, 7:57 PM EDT | Mesoscale Discussion | SPC | 48 min |
| Apr 5, 9:03 PM EDT | Wind Advisory | FFC | 23 hr |
| Apr 5, 9:58 PM EDT | Tornado Watch | SPC | 3 hr |
| Apr 23, 12:02 PM EDT | Mesoscale Discussion | SPC | 118 min |
| Apr 27, 10:42 AM EDT | Mesoscale Discussion | SPC | 2 hr |
| Apr 27, 1:30 PM EDT | Mesoscale Discussion | SPC | 90 min |
| Apr 27, 1:47 PM EDT | Tornado Watch | SPC | 8 hr |
| Apr 27, 4:23 PM EDT | Mesoscale Discussion | SPC | 97 min |
| Apr 27, 6:30 PM EDT | Severe Thunderstorm Warning | FFC | 30 min |
| Apr 27, 6:47 PM EDT | Severe Thunderstorm Warning | FFC | 28 min |
| Apr 27, 7:26 PM EDT | Mesoscale Discussion | SPC | 64 min |
| Apr 27, 7:44 PM EDT | Severe Thunderstorm Warning | FFC | 27 min |
| Apr 27, 8:10 PM EDT | Special Weather Statement | FFC | 35 min |
| May 1, 8:15 AM EDT | Mesoscale Discussion | SPC | 2 hr |
| May 1, 9:31 AM EDT | Special Weather Statement | FFC | 59 min |
| May 1, 10:05 AM EDT | Tornado Warning | FFC | 40 min |
| May 1, 10:29 AM EDT | Special Weather Statement | FFC | 46 min |
| May 20, 2:56 PM EDT | Severe Thunderstorm Warning | FFC | 49 min |
| May 20, 3:36 PM EDT | Special Weather Statement | FFC | 24 min |
| May 22, 4:47 AM EDT | Flash Flood Watch | FFC | 59 hr |
| May 23, 10:10 AM EDT | Tornado Watch | SPC | 8 hr |
| May 24, 11:03 AM EDT | Tornado Watch | SPC | 10 hr |
| May 24, 2:10 PM EDT | Mesoscale Discussion | SPC | 95 min |
| May 29, 3:15 PM EDT | Severe Thunderstorm Watch | SPC | 7 hr |
| May 29, 3:49 PM EDT | Severe Thunderstorm Warning | FFC | 26 min |
| Jun 3, 6:22 PM EDT | Special Weather Statement | FFC | 38 min |
| Jun 3, 7:20 PM EDT | Special Weather Statement | FFC | 40 min |
| Jun 12, 12:59 PM EDT | Special Weather Statement | FFC | 31 min |
| Jun 12, 1:29 PM EDT | Special Weather Statement | FFC | 16 min |
| Jun 12, 1:45 PM EDT | Special Weather Statement | FFC | 30 min |
| Jun 15, 5:24 PM EDT | Mesoscale Discussion | SPC | 66 min |
| Jun 15, 5:43 PM EDT | Severe Thunderstorm Watch | SPC | 3 hr |
| Jun 15, 7:39 PM EDT | Special Weather Statement | FFC | 36 min |
| Jun 22, 4:48 PM EDT | Mesoscale Discussion | SPC | 87 min |
| Jul 7, 7:37 PM EDT | Special Weather Statement | FFC | 23 min |
| Jul 20, 1:44 PM EDT | Mesoscale Discussion | SPC | 3 hr |
| Jul 21, 2:44 PM EDT | Heat Advisory | FFC | 27 hr |
| Jul 25, 9:56 AM EDT | Special Weather Statement | FFC | 49 min |
| Jul 25, 10:55 AM EDT | Flash Flood Warning | FFC | 6 hr |
| Aug 9, 4:59 PM EDT | Special Weather Statement | FFC | 31 min |
| Aug 13, 10:02 PM EDT | Areal Flood Warning | FFC | 4 hr |
| Aug 14, 7:19 PM EDT | Special Weather Statement | FFC | 26 min |
| Aug 30, 1:10 PM EDT | Mesoscale Discussion | SPC | 2 hr |
| Sep 9, 3:18 PM EDT | Flash Flood Watch | FFC | 60 hr |
| Sep 9, 5:23 PM EDT | Tropical Storm Watch | FFC | 22 days |
| Sep 10, 6:09 AM EDT | Tropical Storm Warning | FFC | 41 hr |
| Oct 29, 3:41 AM EDT | Wind Advisory | FFC | 16 hr |
| Nov 6, 4:18 AM EST | Dense Fog Advisory | FFC | 6 hr |
| Nov 18, 11:11 PM EST | Special Weather Statement | FFC | 49 min |
| Nov 18, 11:45 PM EST | Special Weather Statement | FFC | 45 min |
| Nov 22, 1:25 AM EST | Dense Fog Advisory | FFC | 8 hr |
| Nov 29, 8:08 AM EST | Dense Fog Advisory | FFC | 112 min |
| Nov 29, 8:37 PM EST | Dense Fog Advisory | FFC | 12 hr |
| Dec 1, 3:55 AM EST | Dense Fog Advisory | FFC | 5 hr |
| Dec 2, 3:48 AM EST | Dense Fog Advisory | FFC | 7 hr |
| Dec 2, 10:53 PM EST | Dense Fog Advisory | FFC | 9 hr |
| Dec 3, 9:22 PM EST | Dense Fog Advisory | FFC | 12 hr |
| Dec 18, 2:44 AM EST | Dense Fog Advisory | FFC | 6 hr |
| Dec 18, 10:50 PM EST | Dense Fog Advisory | FFC | 10 hr |
| Dec 19, 7:34 PM EST | Dense Fog Advisory | FFC | 11 hr |
| Dec 20, 1:27 PM EST | Severe Thunderstorm Warning | FFC | 48 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 | 12 |
| Tornado Warning | 2 |
| Severe Thunderstorm Watch | 4 |
| Tornado Watch | 9 |
| Mesoscale Discussion | 26 |
| Special Weather Statement | 23 |
| Flooding | |
| Areal Flood Warning | 1 |
| Flash Flood Warning | 2 |
| Flash Flood Watch | 3 |
| Flood Watch | 1 |
| Heat | |
| Heat Advisory | 1 |
| Cold | |
| Freeze Warning | 2 |
| Wind and dust | |
| Wind Advisory | 4 |
| Fire | |
| Red Flag Warning | 1 |
| Fog and smoke | |
| Dense Fog Advisory | 12 |
| 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 archive20162018
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.