Alert archive / North Carolina / Madison County
Weather alerts in Madison County, North Carolina, 2020
124 weather alerts in 2020, from the National Weather Service and the Storm Prediction Center. An alert counts here when it covered this county.
Madison County and its neighbors
Each county as a circle sized by its count in 2020. Tap one for its archive.
- Alerts
- 124
- Warnings
- 19
- Watches
- 13
- Advisories
- 42
- Busiest month
- February14 alerts
- Busiest day
- April 9, 20205 alerts
Over time
By month
Warning verification
How often warnings here had a storm report inside them, and how much warning the reports had.
Madison County, 2020
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| Tornado warnings | 0 | 0 | ||||
| Severe thunderstorm warnings | 5 | 3 | 40% | 1 | 100% | 23 min |
| Flash flood warnings | 1 | 0 | 100% | 0 |
Each office's whole area, 2020
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| NWS Greenville-Spartanburg, SC: tornado warnings | 61 | 13 | 79% | 25 | 72% | 14 min |
| NWS Greenville-Spartanburg, SC: severe thunderstorm warnings | 325 | 183 | 44% | 520 | 75% | 21 min |
| NWS Greenville-Spartanburg, SC: flash flood warnings | 79 | 42 | 47% | 138 | 71% | 121 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, 4:02 AM EST | Wind Advisory | GSP | 30 hr |
| Jan 4, 4:12 AM EST | Winter Weather Advisory | GSP | 27 hr |
| Jan 10, 2:47 PM EST | Wind Advisory | GSP | 34 hr |
| Jan 11, 5:38 PM EST | Tornado Watch | SPC | 6 hr |
| Jan 11, 6:31 PM EST | Severe Thunderstorm Warning | GSP | 44 min |
| Jan 11, 6:36 PM EST | Mesoscale Discussion | SPC | 84 min |
| Jan 19, 3:50 AM EST | Wind Advisory | GSP | 14 hr |
| Jan 19, 2:37 PM EST | Wind Chill Advisory | GSP | 19 hr |
| Jan 23, 2:36 PM EST | Wind Advisory | GSP | 24 hr |
| Jan 27, 3:36 AM EST | Winter Weather Advisory | GSP | 23 hr |
| Feb 5, 4:20 AM EST | Flash Flood Watch | GSP | 44 hr |
| Feb 5, 11:43 PM EST | Special Weather Statement | GSP | 47 min |
| Feb 6, 10:45 AM EST | River Flood Warning | GSP | 46 hr |
| Feb 6, 1:36 PM EST | River Flood Warning | GSP | 44 hr |
| Feb 6, 9:47 PM EST | Wind Advisory | GSP | 20 hr |
| Feb 7, 3:23 AM EST | Winter Weather Advisory | GSP | 15 hr |
| Feb 7, 2:46 PM EST | Winter Weather Advisory | GSP | 30 hr |
| Feb 12, 11:03 PM EST | Special Weather Statement | GSP | 57 min |
| Feb 19, 3:11 PM EST | Winter Weather Advisory | GSP | 33 hr |
| Feb 26, 3:51 AM EST | Wind Advisory | GSP | 39 hr |
| Feb 26, 4:13 AM EST | Winter Weather Advisory | GSP | 32 hr |
| Feb 27, 2:50 PM EST | Winter Weather Advisory | GSP | 45 hr |
| Feb 28, 5:37 PM EST | Special Weather Statement | GSP | 83 min |
| Feb 29, 2:40 AM EST | Special Weather Statement | GSP | 65 min |
| Mar 3, 5:39 AM EST | Special Weather Statement | GSP | 51 min |
| Mar 3, 6:48 AM EST | Special Weather Statement | GSP | 42 min |
| Mar 5, 3:34 PM EST | Winter Weather Advisory | GSP | 38 hr |
| Mar 5, 8:57 PM EST | Wind Advisory | GSP | 36 hr |
| Mar 6, 1:00 AM EST | Dense Fog Advisory | GSP | 3 hr |
| Mar 18, 2:29 AM EDT | Dense Fog Advisory | GSP | 9 hr |
| Mar 20, 6:50 PM EDT | Special Weather Statement | GSP | 40 min |
| Mar 29, 7:00 AM EDT | Special Weather Statement | GSP | 30 min |
| Apr 8, 11:16 PM EDT | Severe Thunderstorm Watch | SPC | 6 hr |
| Apr 9, 2:40 AM EDT | Special Weather Statement | GSP | 35 min |
| Apr 9, 3:00 AM EDT | Special Weather Statement | GSP | 45 min |
| Apr 9, 3:45 AM EDT | Special Weather Statement | GSP | 45 min |
| Apr 9, 4:48 AM EDT | Wind Advisory | GSP | 15 hr |
| Apr 9, 8:28 PM EDT | Red Flag Warning | GSP | 24 hr |
| Apr 9, 9:35 PM EDT | Wind Advisory | GSP | 20 hr |
| Apr 12, 3:56 AM EDT | Wind Advisory | GSP | 36 hr |
| Apr 12, 4:12 AM EDT | Flash Flood Watch | GSP | 28 hr |
| Apr 12, 11:17 PM EDT | Mesoscale Discussion | SPC | 88 min |
| Apr 13, 2:59 AM EDT | Areal Flood Advisory | GSP | 6 hr |
| Apr 13, 5:05 AM EDT | River Flood Warning | GSP | 20 hr |
| Apr 13, 8:29 AM EDT | River Flood Warning | GSP | 37 hr |
| Apr 27, 2:50 PM EDT | Frost Advisory | GSP | 18 hr |
| May 5, 3:22 PM EDT | Mesoscale Discussion | SPC | 113 min |
| May 5, 9:01 PM EDT | Special Weather Statement | GSP | 44 min |
| May 6, 7:19 PM EDT | Frost Advisory | GSP | 14 hr |
| May 7, 3:42 AM EDT | Freeze Watch | GSP | 25 hr |
| May 8, 4:12 AM EDT | Freeze Warning | GSP | 30 hr |
| May 8, 2:49 PM EDT | Freeze Watch | GSP | 13 hr |
| May 9, 4:10 AM EDT | Freeze Warning | GSP | 30 hr |
| May 11, 2:37 PM EDT | Frost Advisory | GSP | 19 hr |
| May 20, 10:37 PM EDT | River Flood Advisory | GSP | 8 hr |
| May 23, 2:55 AM EDT | Dense Fog Advisory | GSP | 6 hr |
| Jun 4, 3:42 PM EDT | Special Weather Statement | GSP | 33 min |
| Jun 4, 4:53 PM EDT | Special Weather Statement | GSP | 37 min |
| Jun 14, 12:34 PM EDT | Mesoscale Discussion | SPC | 116 min |
| Jun 14, 1:45 PM EDT | Severe Thunderstorm Warning | GSP | 45 min |
| Jun 14, 2:33 PM EDT | Severe Thunderstorm Warning | GSP | 42 min |
| Jun 14, 3:16 PM EDT | Special Weather Statement | GSP | 29 min |
| Jun 21, 5:14 PM EDT | Severe Thunderstorm Warning | GSP | 46 min |
| Jun 21, 6:01 PM EDT | Special Weather Statement | GSP | 29 min |
| Jun 21, 8:44 PM EDT | Special Weather Statement | GSP | 31 min |
| Jun 23, 6:10 PM EDT | Special Weather Statement | GSP | 35 min |
| Jun 23, 6:38 PM EDT | Special Weather Statement | GSP | 37 min |
| Jun 28, 3:35 AM EDT | Special Weather Statement | GSP | 25 min |
| Jun 28, 12:49 PM EDT | Mesoscale Discussion | SPC | 2 hr |
| Jun 28, 4:26 PM EDT | Special Weather Statement | GSP | 49 min |
| Jul 10, 8:20 PM EDT | Special Weather Statement | GSP | 25 min |
| Jul 17, 1:47 PM EDT | Mesoscale Discussion | SPC | 118 min |
| Jul 19, 6:27 PM EDT | Special Weather Statement | GSP | 33 min |
| Jul 20, 12:57 PM EDT | Mesoscale Discussion | SPC | 2 hr |
| Jul 21, 1:00 PM EDT | Mesoscale Discussion | SPC | 2 hr |
| Jul 23, 12:56 PM EDT | Special Weather Statement | GSP | 34 min |
| Jul 23, 1:11 PM EDT | Mesoscale Discussion | SPC | 2 hr |
| Jul 23, 4:45 PM EDT | Special Weather Statement | GSP | 45 min |
| Jul 23, 5:31 PM EDT | Special Weather Statement | GSP | 44 min |
| Jul 25, 3:40 PM EDT | Special Weather Statement | GSP | 35 min |
| Jul 31, 6:32 PM EDT | Special Weather Statement | GSP | 43 min |
| Jul 31, 7:09 PM EDT | Special Weather Statement | GSP | 36 min |
| Jul 31, 7:13 PM EDT | Severe Thunderstorm Warning | GSP | 62 min |
| Jul 31, 7:43 PM EDT | Mesoscale Discussion | SPC | 3 hr |
| Aug 2, 2:18 PM EDT | Mesoscale Discussion | SPC | 57 min |
| Aug 3, 7:26 AM EDT | Special Weather Statement | GSP | 34 min |
| Aug 3, 7:56 AM EDT | Special Weather Statement | GSP | 34 min |
| Aug 3, 8:21 AM EDT | Areal Flood Advisory | GSP | 3 hr |
| Aug 3, 8:47 AM EDT | Flash Flood Warning | GSP | 3 hr |
| Aug 5, 1:37 PM EDT | Mesoscale Discussion | SPC | 113 min |
| Aug 6, 3:40 PM EDT | Special Weather Statement | GSP | 35 min |
| Aug 6, 3:44 PM EDT | Special Weather Statement | GSP | 31 min |
| Aug 6, 7:18 PM EDT | Special Weather Statement | GSP | 27 min |
| Aug 6, 8:51 PM EDT | Areal Flood Advisory | GSP | 28 min |
| Aug 21, 4:01 AM EDT | Flash Flood Watch | GSP | 26 hr |
| Aug 23, 4:12 PM EDT | Special Weather Statement | GSP | 33 min |
| Aug 23, 4:42 PM EDT | Special Weather Statement | GSP | 33 min |
| Aug 23, 5:08 PM EDT | Special Weather Statement | GSP | 52 min |
| Oct 16, 11:11 AM EDT | Frost Advisory | GSP | 23 hr |
| Oct 17, 2:43 PM EDT | Frost Advisory | GSP | 18 hr |
| Oct 28, 6:08 AM EDT | Flash Flood Watch | GSP | 32 hr |
| Oct 28, 11:23 AM EDT | Tropical Storm Watch | GSP | 3 hr |
| Oct 28, 2:13 PM EDT | Tropical Storm Warning | GSP | 24 hr |
| Oct 29, 12:29 PM EDT | River Flood Advisory | GSP | 6 hr |
| Oct 29, 8:04 PM EDT | Wind Advisory | GSP | 16 hr |
| Oct 30, 10:12 AM EDT | Freeze Watch | GSP | 5 hr |
| Oct 30, 2:46 PM EDT | Freeze Warning | GSP | 19 hr |
| Nov 1, 3:58 AM EST | Freeze Warning | GSP | 29 hr |
| Nov 1, 3:58 AM EST | Wind Advisory | GSP | 32 hr |
| Nov 10, 2:30 PM EST | Flood Watch | GSP | 47 hr |
| Nov 15, 1:55 AM EST | Wind Advisory | GSP | 32 hr |
| Nov 29, 2:57 PM EST | Winter Storm Watch | GSP | 13 hr |
| Nov 30, 3:55 AM EST | Winter Storm Warning | GSP | 32 hr |
| Nov 30, 3:55 AM EST | Winter Weather Advisory | GSP | 32 hr |
| Dec 6, 2:38 PM EST | Winter Weather Advisory | GSP | 39 hr |
| Dec 15, 4:31 AM EST | Winter Weather Advisory | GSP | 41 hr |
| Dec 21, 3:14 AM EST | Wind Advisory | GSP | 33 hr |
| Dec 21, 2:45 PM EST | High Wind Warning | GSP | 21 hr |
| Dec 23, 3:33 AM EST | Wind Advisory | GSP | 32 hr |
| Dec 23, 11:50 AM EST | Winter Storm Watch | GSP | 3 hr |
| Dec 23, 3:17 PM EST | Winter Storm Warning | GSP | 39 hr |
| Dec 23, 3:17 PM EST | Winter Weather Advisory | GSP | 49 hr |
| Dec 24, 4:04 AM EST | Wind Chill Advisory | GSP | 53 hr |
| Dec 24, 2:28 PM EST | Mesoscale Discussion | SPC | 5 hr |
By product
Every kind of product issued here, grouped by hazard. Each opens the same place narrowed to that product.
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.