Alert archive / Alabama / Etowah County
Weather alerts in Etowah County, Alabama, 2020
120 weather alerts in 2020, from the National Weather Service and the Storm Prediction Center. An alert counts here when it covered this county.
Etowah County and its neighbors
Each county as a circle sized by its count in 2020. Tap one for its archive.
- Alerts
- 120
- Warnings
- 20
- Watches
- 21
- Advisories
- 45
- Busiest month
- February25 alerts
- Busiest day
- April 13, 20208 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 Etowah County in 2020 had a tornado report inside them; 3 of 3 tornado reports fell inside a warning, on average 15 minutes after it went out.
Etowah County, 2020
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| Tornado warnings | 2 | 1 | 50% | 3 | 100% | 15 min |
| Severe thunderstorm warnings | 8 | 5 | 38% | 14 | 100% | 34 min |
| Flash flood warnings | 2 | 2 | 0% | 4 | 50% | 107 min |
Each office's whole area, 2020
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| NWS Birmingham, AL: tornado warnings | 40 | 16 | 60% | 62 | 68% | 17 min |
| NWS Birmingham, AL: severe thunderstorm warnings | 206 | 150 | 27% | 663 | 66% | 25 min |
| NWS Birmingham, AL: flash flood warnings | 36 | 27 | 25% | 123 | 82% | 117 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, Central Time. Each opens its own page with the text, the map, the radar and the sounding.
| Issued | Product | Office | Lasted |
|---|---|---|---|
| Jan 1, 3:35 AM CST | Flood Watch | BMX | 62 hr |
| Jan 3, 4:59 AM CST | Dense Fog Advisory | BMX | 4 hr |
| Jan 9, 1:49 PM CST | Wind Advisory | BMX | 55 hr |
| Jan 11, 12:20 PM CST | Mesoscale Discussion | SPC | 85 min |
| Jan 11, 12:42 PM CST | Tornado Watch | SPC | 7 hr |
| Jan 11, 1:09 PM CST | Severe Thunderstorm Warning | BMX | 81 min |
| Jan 11, 1:15 PM CST | Mesoscale Discussion | SPC | 90 min |
| Jan 11, 1:19 PM CST | Areal Flood Advisory | BMX | 116 min |
| Jan 11, 1:29 PM CST | Areal Flood Advisory | BMX | 2 hr |
| Jan 12, 2:51 AM CST | Dense Fog Advisory | BMX | 6 hr |
| Jan 14, 3:03 AM CST | Flash Flood Watch | BMX | 18 hr |
| Jan 15, 11:39 PM CST | Special Weather Statement | BMX | 51 min |
| Jan 24, 5:05 AM CST | Dense Fog Advisory | BMX | 4 hr |
| Jan 27, 5:07 AM CST | Dense Fog Advisory | BMX | 4 hr |
| Feb 4, 2:08 PM CST | Flash Flood Watch | BMX | 48 hr |
| Feb 5, 3:47 PM CST | Mesoscale Discussion | SPC | 118 min |
| Feb 5, 3:52 PM CST | Special Weather Statement | BMX | 38 min |
| Feb 5, 4:25 PM CST | Tornado Watch | SPC | 5 hr |
| Feb 5, 11:48 PM CST | Tornado Watch | SPC | 8 hr |
| Feb 6, 12:05 AM CST | Areal Flood Advisory | BMX | 5 hr |
| Feb 6, 12:46 AM CST | Special Weather Statement | BMX | 44 min |
| Feb 6, 1:57 AM CST | Areal Flood Warning | BMX | 9 hr |
| Feb 6, 2:53 AM CST | Tornado Warning | BMX | 39 min |
| Feb 7, 8:15 PM CST | Winter Weather Advisory | BMX | 15 hr |
| Feb 8, 9:26 PM CST | Dense Fog Advisory | BMX | 12 hr |
| Feb 9, 3:52 AM CST | Flood Watch | BMX | 24 hr |
| Feb 10, 3:40 AM CST | Flash Flood Watch | BMX | 30 hr |
| Feb 10, 1:51 PM CST | Areal Flood Advisory | BMX | 6 hr |
| Feb 10, 2:30 PM CST | Flash Flood Warning | BMX | 6 hr |
| Feb 11, 12:03 AM CST | Areal Flood Advisory | BMX | 6 hr |
| Feb 11, 3:43 PM CST | Flash Flood Watch | BMX | 38 hr |
| Feb 11, 11:57 PM CST | River Flood Warning | BMX | 57 hr |
| Feb 12, 4:34 PM CST | Severe Thunderstorm Watch | SPC | 5 hr |
| Feb 12, 7:37 PM CST | Mesoscale Discussion | SPC | 83 min |
| Feb 17, 2:36 AM CST | Dense Fog Advisory | BMX | 6 hr |
| Feb 18, 2:57 AM CST | Flash Flood Watch | BMX | 22 hr |
| Feb 18, 1:30 PM CST | Areal Flood Warning | BMX | 6 hr |
| Feb 18, 7:12 PM CST | River Flood Warning | BMX | 5 days |
| Feb 26, 5:10 AM CST | Dense Fog Advisory | BMX | 4 hr |
| Mar 5, 9:34 PM CST | Dense Fog Advisory | BMX | 8 hr |
| Mar 6, 5:13 AM CST | Wind Advisory | BMX | 13 hr |
| Mar 18, 3:08 AM CDT | Dense Fog Advisory | BMX | 6 hr |
| Mar 24, 7:05 PM CDT | Mesoscale Discussion | SPC | 55 min |
| Mar 24, 7:44 PM CDT | Tornado Watch | SPC | 3 hr |
| Mar 29, 4:39 AM CDT | Special Weather Statement | BMX | 36 min |
| Apr 8, 5:50 AM CDT | Dense Fog Advisory | BMX | 3 hr |
| Apr 9, 1:10 AM CDT | Mesoscale Discussion | SPC | 95 min |
| Apr 9, 2:12 AM CDT | Special Weather Statement | BMX | 63 min |
| Apr 10, 3:21 PM CDT | Frost Advisory | BMX | 17 hr |
| Apr 11, 2:04 PM CDT | Wind Advisory | BMX | 42 hr |
| Apr 12, 3:07 AM CDT | Flash Flood Watch | BMX | 21 hr |
| Apr 12, 1:45 PM CDT | Mesoscale Discussion | SPC | 90 min |
| Apr 12, 3:20 PM CDT | Tornado Watch | SPC | 8 hr |
| Apr 12, 5:14 PM CDT | Mesoscale Discussion | SPC | 91 min |
| Apr 12, 5:50 PM CDT | Severe Thunderstorm Warning | BMX | 55 min |
| Apr 12, 5:59 PM CDT | Tornado Warning | BMX | 35 min |
| Apr 12, 7:16 PM CDT | Areal Flood Advisory | BMX | 6 hr |
| Apr 12, 7:36 PM CDT | Mesoscale Discussion | SPC | 84 min |
| Apr 12, 8:50 PM CDT | Mesoscale Discussion | SPC | 55 min |
| Apr 12, 9:19 PM CDT | Severe Thunderstorm Warning | BMX | 71 min |
| Apr 12, 10:22 PM CDT | Flash Flood Warning | BMX | 4 hr |
| Apr 12, 10:47 PM CDT | Severe Thunderstorm Warning | BMX | 58 min |
| Apr 13, 1:29 AM CDT | High Wind Warning | BMX | 3 hr |
| Apr 13, 1:29 AM CDT | Wind Advisory | BMX | 7 hr |
| Apr 14, 1:48 AM CDT | Frost Advisory | BMX | 30 hr |
| Apr 15, 2:22 PM CDT | Frost Advisory | BMX | 18 hr |
| Apr 19, 10:45 PM CDT | Areal Flood Advisory | BMX | 3 hr |
| Apr 22, 10:23 PM CDT | Wind Advisory | BMX | 14 hr |
| Apr 25, 4:40 PM CDT | Wind Advisory | BMX | 5 hr |
| Apr 26, 2:42 AM CDT | Wind Advisory | BMX | 16 hr |
| May 6, 2:39 AM CDT | Wind Advisory | BMX | 18 hr |
| May 7, 3:12 PM CDT | Wind Advisory | BMX | 26 hr |
| May 9, 2:46 AM CDT | Frost Advisory | BMX | 29 hr |
| May 23, 3:05 AM CDT | Dense Fog Advisory | BMX | 6 hr |
| May 23, 9:00 PM CDT | Special Weather Statement | BMX | 60 min |
| Jun 3, 4:23 PM CDT | Special Weather Statement | BMX | 37 min |
| Jun 3, 5:00 PM CDT | Severe Thunderstorm Warning | BMX | 34 min |
| Jun 3, 5:34 PM CDT | Special Weather Statement | BMX | 26 min |
| Jun 5, 9:53 AM CDT | Mesoscale Discussion | SPC | 2 hr |
| Jun 9, 2:13 PM CDT | Special Weather Statement | BMX | 32 min |
| Jun 9, 3:24 PM CDT | Special Weather Statement | BMX | 51 min |
| Jun 21, 1:28 PM CDT | Severe Thunderstorm Warning | BMX | 17 min |
| Jun 22, 3:55 PM CDT | Special Weather Statement | BMX | 50 min |
| Jun 25, 9:37 PM CDT | Special Weather Statement | BMX | 68 min |
| Jun 27, 1:19 PM CDT | Special Weather Statement | BMX | 41 min |
| Jun 27, 7:11 PM CDT | Mesoscale Discussion | SPC | 64 min |
| Jun 30, 7:09 PM CDT | Special Weather Statement | BMX | 51 min |
| Jul 12, 12:25 PM CDT | Severe Thunderstorm Warning | BMX | 65 min |
| Jul 13, 3:10 AM CDT | Dense Fog Advisory | BMX | 6 hr |
| Jul 25, 3:34 PM CDT | Special Weather Statement | BMX | 26 min |
| Jul 31, 1:29 PM CDT | Mesoscale Discussion | SPC | 91 min |
| Jul 31, 5:23 PM CDT | Mesoscale Discussion | SPC | 2 hr |
| Aug 10, 1:17 PM CDT | Mesoscale Discussion | SPC | 118 min |
| Aug 19, 12:54 PM CDT | Special Weather Statement | BMX | 36 min |
| Aug 20, 6:10 PM CDT | Special Weather Statement | BMX | 35 min |
| Aug 20, 6:24 PM CDT | Special Weather Statement | BMX | 36 min |
| Aug 20, 6:29 PM CDT | Severe Thunderstorm Warning | BMX | 27 min |
| Aug 20, 9:09 PM CDT | Areal Flood Advisory | BMX | 3 hr |
| Aug 28, 10:21 AM CDT | Flash Flood Watch | BMX | 49 min |
| Aug 28, 11:10 AM CDT | Flash Flood Watch | BMX | 7 hr |
| Aug 30, 1:39 PM CDT | Mesoscale Discussion | SPC | 3 hr |
| Sep 14, 4:27 AM CDT | Flash Flood Watch | BMX | 3 days |
| Oct 16, 9:30 PM CDT | Frost Advisory | BMX | 11 hr |
| Oct 27, 4:11 AM CDT | Tropical Storm Watch | BMX | 30 hr |
| Oct 27, 4:30 PM CDT | Flash Flood Watch | BMX | 37 hr |
| Oct 28, 10:06 AM CDT | Tropical Storm Warning | BMX | 21 hr |
| Oct 31, 3:08 AM CDT | Freeze Watch | BMX | 24 hr |
| Nov 1, 2:14 AM CST | Freeze Warning | BMX | 30 hr |
| Nov 2, 1:22 PM CST | Frost Advisory | BMX | 18 hr |
| Nov 12, 10:15 PM CST | Dense Fog Advisory | BMX | 10 hr |
| Nov 16, 9:21 PM CST | Frost Advisory | BMX | 11 hr |
| Nov 17, 1:40 AM CST | Freeze Watch | BMX | 7 hr |
| Nov 17, 8:51 AM CST | Freeze Warning | BMX | 23 hr |
| Nov 29, 11:11 PM CST | Wind Advisory | BMX | 7 hr |
| Nov 30, 4:44 PM CST | Winter Weather Advisory | BMX | 7 hr |
| Dec 5, 8:21 AM CST | Dense Fog Advisory | BMX | 99 min |
| Dec 6, 3:23 AM CST | Freezing Fog Advisory | BMX | 5 hr |
| Dec 12, 6:57 PM CST | Dense Fog Advisory | BMX | 15 hr |
| Dec 23, 2:43 PM CST | Wind Advisory | BMX | 27 hr |
| Dec 29, 3:57 AM CST | Dense Fog Advisory | BMX | 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 | 8 |
| Tornado Warning | 2 |
| Severe Thunderstorm Watch | 1 |
| Tornado Watch | 5 |
| Mesoscale Discussion | 16 |
| Special Weather Statement | 18 |
| Flooding | |
| Areal Flood Warning | 2 |
| Flash Flood Warning | 2 |
| River Flood Warning | 2 |
| Flash Flood Watch | 10 |
| Flood Watch | 2 |
| Areal Flood Advisory | 8 |
| Winter | |
| Winter Weather Advisory | 2 |
| Cold | |
| Freeze Warning | 2 |
| Freeze Watch | 2 |
| Frost Advisory | 7 |
| Wind and dust | |
| High Wind Warning | 1 |
| Wind Advisory | 11 |
| Fog and smoke | |
| Dense Fog Advisory | 16 |
| Freezing Fog Advisory | 1 |
| 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.