Alert archive / South Carolina / Florence County
Weather alerts in Florence County, South Carolina, 2012
207 weather alerts in 2012, from the National Weather Service and the Storm Prediction Center. An alert counts here when it covered this county.
Florence County and its neighbors
Each county as a circle sized by its count in 2012. Tap one for its archive.
- Alerts
- 207
- Warnings
- 44
- Watches
- 18
- Advisories
- 46
- Busiest month
- July42 alerts
- Busiest day
- February 24, 20129 alerts
Over time
By month
Warning verification
How often warnings here had a storm report inside them, and how much warning the reports had.
Florence County, 2012
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| Tornado warnings | 0 | 0 | ||||
| Severe thunderstorm warnings | 36 | 23 | 36% | 33 | 82% | 24 min |
| Flash flood warnings | 1 | 1 | 0% | 3 | 100% | 57 min |
Each office's whole area, 2012
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| NWS Wilmington, NC: tornado warnings | 11 | 1 | 91% | 1 | 100% | 9 min |
| NWS Wilmington, NC: severe thunderstorm warnings | 162 | 103 | 36% | 264 | 82% | 25 min |
| NWS Wilmington, NC: flash flood warnings | 1 | 1 | 0% | 3 | 100% | 57 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 9, 11:32 PM EST | Dense Fog Advisory | ILM | 7 hr |
| Jan 26, 4:10 AM EST | Dense Fog Advisory | ILM | 2 hr |
| Feb 24, 11:10 AM EST | Mesoscale Discussion | SPC | 65 min |
| Feb 24, 12:43 PM EST | Mesoscale Discussion | SPC | 92 min |
| Feb 24, 1:19 PM EST | Tornado Watch | SPC | 7 hr |
| Feb 24, 1:30 PM EST | Severe Thunderstorm Warning | ILM | 60 min |
| Feb 24, 1:50 PM EST | Mesoscale Discussion | SPC | 85 min |
| Feb 24, 2:03 PM EST | Severe Thunderstorm Warning | ILM | 72 min |
| Feb 24, 2:09 PM EST | Severe Thunderstorm Warning | ILM | 66 min |
| Feb 24, 2:20 PM EST | Severe Thunderstorm Warning | ILM | 40 min |
| Feb 24, 4:45 PM EST | Mesoscale Discussion | SPC | 90 min |
| Mar 3, 4:39 AM EST | Severe Thunderstorm Watch | SPC | 4 hr |
| Mar 3, 6:06 AM EST | Severe Thunderstorm Warning | ILM | 54 min |
| Mar 5, 7:42 AM EST | Wind Advisory | ILM | 8 hr |
| Mar 14, 6:16 AM EDT | Dense Fog Advisory | ILM | 4 hr |
| Mar 17, 7:58 PM EDT | Special Weather Statement | ILM | 62 min |
| Mar 18, 2:00 PM EDT | Special Weather Statement | ILM | 45 min |
| Mar 18, 2:49 PM EDT | Special Weather Statement | ILM | 41 min |
| Mar 18, 10:40 PM EDT | Dense Fog Advisory | ILM | 10 hr |
| Mar 20, 4:52 AM EDT | Dense Fog Advisory | ILM | 4 hr |
| Mar 21, 5:25 PM EDT | Special Weather Statement | ILM | 35 min |
| Mar 23, 4:39 AM EDT | Dense Fog Advisory | ILM | 4 hr |
| Mar 24, 1:53 PM EDT | Severe Thunderstorm Watch | SPC | 7 hr |
| Mar 24, 7:21 PM EDT | Mesoscale Discussion | SPC | 84 min |
| Mar 24, 8:28 PM EDT | Special Weather Statement | ILM | 62 min |
| Mar 24, 8:43 PM EDT | Severe Thunderstorm Watch | SPC | 5 hr |
| Mar 24, 9:26 PM EDT | Special Weather Statement | ILM | 64 min |
| Mar 24, 10:20 PM EDT | Mesoscale Discussion | SPC | 115 min |
| Mar 24, 10:25 PM EDT | Special Weather Statement | ILM | 65 min |
| Mar 25, 12:33 AM EDT | Mesoscale Discussion | SPC | 57 min |
| Mar 25, 12:31 PM EDT | Mesoscale Discussion | SPC | 2 hr |
| Mar 25, 2:00 PM EDT | Special Weather Statement | ILM | 60 min |
| Apr 2, 1:48 PM EDT | Mesoscale Discussion | SPC | 87 min |
| Apr 4, 12:34 AM EDT | Special Weather Statement | ILM | 56 min |
| Apr 5, 1:03 PM EDT | Mesoscale Discussion | SPC | 87 min |
| Apr 5, 1:47 PM EDT | Severe Thunderstorm Watch | SPC | 7 hr |
| Apr 5, 3:00 PM EDT | Severe Thunderstorm Warning | ILM | 45 min |
| Apr 5, 3:25 PM EDT | Severe Thunderstorm Warning | ILM | 65 min |
| Apr 5, 3:37 PM EDT | Mesoscale Discussion | SPC | 53 min |
| Apr 5, 6:35 PM EDT | Mesoscale Discussion | SPC | 85 min |
| Apr 9, 11:47 AM EDT | Fire Weather Watch | ILM | 16 hr |
| Apr 10, 7:49 PM EDT | Special Weather Statement | ILM | 26 min |
| Apr 11, 3:31 AM EDT | Freeze Watch | ILM | 8 hr |
| Apr 11, 11:44 AM EDT | Frost Advisory | ILM | 20 hr |
| Apr 12, 12:45 PM EDT | Frost Advisory | ILM | 19 hr |
| Apr 18, 2:48 PM EDT | Mesoscale Discussion | SPC | 87 min |
| Apr 18, 4:03 PM EDT | Special Weather Statement | ILM | 57 min |
| Apr 18, 4:24 PM EDT | Special Weather Statement | ILM | 66 min |
| Apr 18, 4:47 PM EDT | Severe Thunderstorm Warning | ILM | 43 min |
| Apr 21, 5:18 AM EDT | Dense Fog Advisory | ILM | 3 hr |
| Apr 24, 7:18 PM EDT | Special Weather Statement | ILM | 57 min |
| Apr 26, 3:40 PM EDT | Special Weather Statement | ILM | 50 min |
| Apr 26, 4:11 PM EDT | Severe Thunderstorm Warning | ILM | 49 min |
| Apr 27, 4:54 PM EDT | Severe Thunderstorm Warning | ILM | 51 min |
| Apr 27, 5:36 PM EDT | Severe Thunderstorm Watch | SPC | 6 hr |
| Apr 27, 5:53 PM EDT | Severe Thunderstorm Warning | ILM | 42 min |
| Apr 27, 6:51 PM EDT | Special Weather Statement | ILM | 39 min |
| Apr 27, 8:29 PM EDT | Special Weather Statement | ILM | 61 min |
| Apr 27, 8:54 PM EDT | Mesoscale Discussion | SPC | 96 min |
| May 5, 1:30 PM EDT | Mesoscale Discussion | SPC | 2 hr |
| May 5, 2:38 PM EDT | Severe Thunderstorm Watch | SPC | 7 hr |
| May 5, 6:20 PM EDT | Mesoscale Discussion | SPC | 55 min |
| May 5, 8:48 PM EDT | Severe Thunderstorm Warning | ILM | 57 min |
| May 9, 11:32 AM EDT | Mesoscale Discussion | SPC | 88 min |
| May 9, 3:28 PM EDT | Special Weather Statement | ILM | 62 min |
| May 9, 3:55 PM EDT | Special Weather Statement | ILM | 65 min |
| May 14, 1:07 PM EDT | Special Weather Statement | ILM | 53 min |
| May 14, 2:04 PM EDT | Special Weather Statement | ILM | 56 min |
| May 14, 3:17 PM EDT | Severe Thunderstorm Warning | ILM | 58 min |
| May 14, 3:22 PM EDT | Severe Thunderstorm Warning | ILM | 32 min |
| May 14, 4:23 PM EDT | Severe Thunderstorm Warning | ILM | 67 min |
| May 15, 1:07 PM EDT | Mesoscale Discussion | SPC | 113 min |
| May 15, 2:27 PM EDT | Severe Thunderstorm Watch | SPC | 7 hr |
| May 15, 6:30 PM EDT | Mesoscale Discussion | SPC | 90 min |
| May 15, 8:05 PM EDT | Areal Flood Advisory | ILM | 115 min |
| May 15, 8:17 PM EDT | Severe Thunderstorm Warning | ILM | 37 min |
| May 15, 8:36 PM EDT | Areal Flood Warning | ILM | 2 hr |
| May 15, 8:42 PM EDT | Mesoscale Discussion | SPC | 63 min |
| May 17, 6:26 AM EDT | Special Weather Statement | ILM | 34 min |
| May 17, 7:04 AM EDT | River Flood Warning | ILM | 5 days |
| May 17, 12:01 PM EDT | Areal Flood Advisory | ILM | 56 min |
| May 17, 12:35 PM EDT | Areal Flood Warning | ILM | 28 min |
| May 17, 12:55 PM EDT | Flash Flood Warning | ILM | 2 hr |
| May 17, 1:10 PM EDT | Areal Flood Advisory | ILM | 52 min |
| May 17, 2:00 PM EDT | Areal Flood Warning | ILM | 2 hr |
| May 17, 2:56 PM EDT | Areal Flood Advisory | ILM | 113 min |
| May 23, 1:15 PM EDT | Mesoscale Discussion | SPC | 60 min |
| May 23, 1:44 PM EDT | Severe Thunderstorm Watch | SPC | 7 hr |
| May 23, 4:05 PM EDT | Severe Thunderstorm Warning | ILM | 35 min |
| May 23, 4:49 PM EDT | Severe Thunderstorm Warning | ILM | 35 min |
| May 23, 4:54 PM EDT | Mesoscale Discussion | SPC | 66 min |
| May 23, 7:32 PM EDT | Mesoscale Discussion | SPC | 58 min |
| May 29, 3:13 AM EDT | Flood Watch | ILM | 36 hr |
| May 30, 12:47 AM EDT | Special Weather Statement | ILM | 28 min |
| Jun 1, 1:54 PM EDT | Mesoscale Discussion | SPC | 66 min |
| Jun 1, 2:13 PM EDT | Severe Thunderstorm Watch | SPC | 8 hr |
| Jun 1, 4:31 PM EDT | Mesoscale Discussion | SPC | 59 min |
| Jun 1, 5:45 PM EDT | Severe Thunderstorm Warning | ILM | 60 min |
| Jun 1, 7:42 PM EDT | Mesoscale Discussion | SPC | 2 hr |
| Jun 11, 2:42 PM EDT | Areal Flood Advisory | ILM | 2 hr |
| Jun 11, 5:21 PM EDT | Severe Thunderstorm Warning | ILM | 54 min |
| Jun 12, 3:29 PM EDT | Areal Flood Advisory | ILM | 2 hr |
| Jun 12, 5:25 PM EDT | Areal Flood Advisory | ILM | 110 min |
| Jun 12, 5:52 PM EDT | Special Weather Statement | ILM | 53 min |
| Jun 13, 4:40 PM EDT | Special Weather Statement | ILM | 50 min |
| Jun 13, 5:25 PM EDT | Areal Flood Advisory | ILM | 80 min |
| Jun 13, 8:25 PM EDT | Special Weather Statement | ILM | 65 min |
| Jun 24, 3:57 PM EDT | Special Weather Statement | ILM | 63 min |
| Jun 24, 5:28 PM EDT | Areal Flood Advisory | ILM | 92 min |
| Jun 27, 2:00 PM EDT | Excessive Heat Watch | ILM | 49 hr |
| Jun 28, 2:26 PM EDT | Heat Advisory | ILM | 30 hr |
| Jun 29, 3:11 PM EDT | Excessive Heat Warning | ILM | 51 hr |
| Jul 1, 1:39 PM EDT | Mesoscale Discussion | SPC | 96 min |
| Jul 1, 2:01 PM EDT | Severe Thunderstorm Watch | SPC | 9 hr |
| Jul 1, 4:15 PM EDT | Mesoscale Discussion | SPC | 90 min |
| Jul 1, 4:17 PM EDT | Severe Thunderstorm Warning | ILM | 73 min |
| Jul 1, 4:36 PM EDT | Severe Thunderstorm Warning | ILM | 69 min |
| Jul 1, 5:06 PM EDT | Severe Thunderstorm Warning | ILM | 69 min |
| Jul 1, 5:30 PM EDT | Severe Thunderstorm Warning | ILM | 75 min |
| Jul 1, 7:39 PM EDT | Mesoscale Discussion | SPC | 96 min |
| Jul 1, 9:45 PM EDT | Mesoscale Discussion | SPC | 60 min |
| Jul 4, 3:25 PM EDT | Heat Advisory | ILM | 29 hr |
| Jul 5, 1:40 PM EDT | Mesoscale Discussion | SPC | 95 min |
| Jul 5, 3:16 PM EDT | Heat Advisory | ILM | 28 hr |
| Jul 5, 5:09 PM EDT | Special Weather Statement | ILM | 51 min |
| Jul 5, 5:37 PM EDT | Severe Thunderstorm Warning | ILM | 53 min |
| Jul 5, 6:41 PM EDT | Mesoscale Discussion | SPC | 94 min |
| Jul 6, 2:31 PM EDT | Heat Advisory | ILM | 29 hr |
| Jul 7, 3:52 PM EDT | Heat Advisory | ILM | 28 hr |
| Jul 9, 3:21 AM EDT | Heat Advisory | ILM | 16 hr |
| Jul 9, 5:00 PM EDT | Severe Thunderstorm Warning | ILM | 45 min |
| Jul 10, 12:23 PM EDT | Mesoscale Discussion | SPC | 2 hr |
| Jul 10, 4:37 PM EDT | Special Weather Statement | ILM | 53 min |
| Jul 10, 4:45 PM EDT | Severe Thunderstorm Warning | ILM | 60 min |
| Jul 10, 5:26 PM EDT | Severe Thunderstorm Warning | ILM | 64 min |
| Jul 11, 1:30 PM EDT | Mesoscale Discussion | SPC | 2 hr |
| Jul 12, 4:52 PM EDT | Areal Flood Advisory | ILM | 113 min |
| Jul 13, 2:16 PM EDT | Special Weather Statement | ILM | 44 min |
| Jul 21, 2:17 PM EDT | Mesoscale Discussion | SPC | 2 hr |
| Jul 23, 3:19 PM EDT | Heat Advisory | ILM | 28 hr |
| Jul 23, 3:44 PM EDT | Special Weather Statement | ILM | 61 min |
| Jul 23, 4:42 PM EDT | Special Weather Statement | ILM | 63 min |
| Jul 24, 3:46 PM EDT | Mesoscale Discussion | SPC | 89 min |
| Jul 24, 3:58 PM EDT | Heat Advisory | ILM | 9 hr |
| Jul 25, 9:21 AM EDT | Special Weather Statement | ILM | 54 min |
| Jul 25, 3:33 PM EDT | Heat Advisory | ILM | 28 hr |
| Jul 26, 10:39 AM EDT | Excessive Heat Warning | ILM | 9 hr |
| Jul 26, 4:08 PM EDT | Heat Advisory | ILM | 27 hr |
| Jul 28, 2:18 PM EDT | Mesoscale Discussion | SPC | 117 min |
| Jul 28, 4:01 PM EDT | Severe Thunderstorm Watch | SPC | 6 hr |
| Jul 28, 6:12 PM EDT | Special Weather Statement | ILM | 63 min |
| Jul 29, 12:59 AM EDT | Special Weather Statement | ILM | 61 min |
| Jul 29, 5:21 PM EDT | Severe Thunderstorm Warning | ILM | 54 min |
| Jul 31, 4:43 PM EDT | Special Weather Statement | ILM | 62 min |
| Aug 1, 1:47 AM EDT | Special Weather Statement | ILM | 88 min |
| Aug 2, 5:39 PM EDT | Special Weather Statement | ILM | 66 min |
| Aug 2, 5:44 PM EDT | Severe Thunderstorm Warning | ILM | 35 min |
| Aug 2, 6:24 PM EDT | Severe Thunderstorm Warning | ILM | 30 min |
| Aug 2, 7:50 PM EDT | Severe Thunderstorm Warning | ILM | 41 min |
| Aug 6, 3:54 PM EDT | Special Weather Statement | ILM | 66 min |
| Aug 10, 3:47 PM EDT | Special Weather Statement | ILM | 58 min |
| Aug 10, 4:48 PM EDT | Special Weather Statement | ILM | 57 min |
| Aug 11, 12:29 PM EDT | Special Weather Statement | ILM | 61 min |
| Aug 11, 12:55 PM EDT | Severe Thunderstorm Warning | ILM | 40 min |
| Aug 11, 1:27 PM EDT | Mesoscale Discussion | SPC | 63 min |
| Aug 11, 1:32 PM EDT | Special Weather Statement | ILM | 58 min |
| Aug 12, 2:38 AM EDT | Areal Flood Advisory | ILM | 112 min |
| Aug 12, 4:28 AM EDT | Special Weather Statement | ILM | 62 min |
| Aug 13, 6:21 AM EDT | Dense Fog Advisory | ILM | 3 hr |
| Aug 15, 12:53 AM EDT | Special Weather Statement | ILM | 52 min |
| Aug 17, 3:54 PM EDT | Special Weather Statement | ILM | 66 min |
| Aug 17, 3:58 PM EDT | Severe Thunderstorm Warning | ILM | 62 min |
| Aug 17, 4:48 PM EDT | Areal Flood Advisory | ILM | 117 min |
| Aug 19, 9:53 AM EDT | Mesoscale Discussion | SPC | 97 min |
| Aug 19, 10:33 AM EDT | Severe Thunderstorm Watch | SPC | 7 hr |
| Aug 19, 11:42 AM EDT | Special Weather Statement | ILM | 63 min |
| Aug 22, 1:04 PM EDT | Areal Flood Advisory | ILM | 116 min |
| Aug 27, 2:11 PM EDT | Areal Flood Advisory | ILM | 94 min |
| Aug 29, 4:20 PM EDT | Special Weather Statement | ILM | 55 min |
| Aug 29, 4:53 PM EDT | Areal Flood Advisory | ILM | 82 min |
| Aug 30, 10:27 PM EDT | Dense Fog Advisory | ILM | 8 hr |
| Sep 3, 1:52 PM EDT | Mesoscale Discussion | SPC | 53 min |
| Sep 3, 4:34 PM EDT | Special Weather Statement | ILM | 56 min |
| Sep 3, 5:20 PM EDT | Special Weather Statement | ILM | 55 min |
| Sep 3, 5:31 PM EDT | Areal Flood Advisory | ILM | 96 min |
| Sep 7, 12:30 AM EDT | Special Weather Statement | ILM | 60 min |
| Sep 8, 5:44 PM EDT | Special Weather Statement | ILM | 61 min |
| Sep 8, 7:23 PM EDT | Areal Flood Advisory | ILM | 112 min |
| Sep 8, 9:17 PM EDT | Areal Flood Advisory | ILM | 88 min |
| Sep 18, 8:52 AM EDT | Special Weather Statement | ILM | 23 min |
| Sep 18, 11:35 AM EDT | Mesoscale Discussion | SPC | 85 min |
| Oct 1, 3:20 PM EDT | Mesoscale Discussion | SPC | 85 min |
| Oct 15, 2:39 PM EDT | Mesoscale Discussion | SPC | 66 min |
| Oct 15, 4:41 PM EDT | Severe Thunderstorm Warning | ILM | 64 min |
| Nov 4, 5:23 PM EST | Special Weather Statement | ILM | 67 min |
| Nov 4, 5:43 PM EST | Severe Thunderstorm Warning | ILM | 47 min |
| Nov 7, 12:34 PM EST | Frost Advisory | ILM | 20 hr |
| Nov 7, 12:34 PM EST | Freeze Warning | ILM | 20 hr |
| Nov 8, 12:19 PM EST | Frost Advisory | ILM | 20 hr |
| Dec 3, 3:51 AM EST | Dense Fog Advisory | ILM | 4 hr |
| Dec 4, 2:33 AM EST | Dense Fog Advisory | ILM | 4 hr |
| Dec 10, 4:30 AM EST | Dense Fog Advisory | ILM | 5 hr |
| Dec 15, 11:55 PM EST | Dense Fog Advisory | ILM | 11 hr |
| Dec 26, 8:07 AM EST | Mesoscale Discussion | SPC | 83 min |
| Dec 26, 10:08 AM EST | Tornado Watch | SPC | 6 hr |
| Dec 26, 10:42 AM EST | Special Weather Statement | ILM | 48 min |
| Dec 26, 11:30 AM EST | Special Weather Statement | ILM | 60 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 | 36 |
| Severe Thunderstorm Watch | 12 |
| Tornado Watch | 2 |
| Mesoscale Discussion | 44 |
| Special Weather Statement | 55 |
| Flooding | |
| Areal Flood Warning | 3 |
| Flash Flood Warning | 1 |
| River Flood Warning | 1 |
| Flood Watch | 1 |
| Areal Flood Advisory | 18 |
| Heat | |
| Excessive Heat Warning | 2 |
| Excessive Heat Watch | 1 |
| Heat Advisory | 10 |
| Cold | |
| Freeze Warning | 1 |
| Freeze Watch | 1 |
| Frost Advisory | 4 |
| Wind and dust | |
| Wind Advisory | 1 |
| Fire | |
| Fire Weather Watch | 1 |
| Fog and smoke | |
| Dense Fog Advisory | 13 |
The busiest days
Days with the most alerts issued, by UTC date.
Nearby
Alerts in force nowTornadoes on recordForecastThe radar archive20112013
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.