Alert archive / South Carolina / Hampton County
Weather alerts in Hampton County, South Carolina, 2012
182 weather alerts in 2012, from the National Weather Service and the Storm Prediction Center. An alert counts here when it covered this county.
Hampton County and its neighbors
Each county as a circle sized by its count in 2012. Tap one for its archive.
- Alerts
- 182
- Warnings
- 45
- Watches
- 19
- Advisories
- 37
- Busiest month
- July40 alerts
- Busiest day
- July 1, 20128 alerts
Over time
By month
Warning verification
How often warnings here had a storm report inside them, and how much warning the reports had.
Hampton County, 2012
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| Tornado warnings | 0 | 0 | ||||
| Severe thunderstorm warnings | 40 | 26 | 35% | 21 | 81% | 31 min |
| Flash flood warnings | 1 | 1 | 0% | 0 |
Each office's whole area, 2012
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| NWS Charleston, SC: tornado warnings | 18 | 2 | 89% | 7 | 43% | 1 min |
| NWS Charleston, SC: severe thunderstorm warnings | 253 | 181 | 28% | 444 | 83% | 25 min |
| NWS Charleston, SC: flash flood warnings | 11 | 6 | 45% | 31 | 87% | 144 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 21, 12:28 PM EST | Tornado Watch | SPC | 8 hr |
| Jan 21, 2:57 PM EST | Mesoscale Discussion | SPC | 63 min |
| Jan 21, 5:13 PM EST | Severe Thunderstorm Warning | CHS | 47 min |
| Jan 22, 1:20 AM EST | Dense Fog Advisory | CHS | 8 hr |
| Jan 23, 5:40 AM EST | Dense Fog Advisory | CHS | 7 hr |
| Jan 26, 3:25 AM EST | Dense Fog Advisory | CHS | 8 hr |
| Feb 10, 1:56 PM EST | Fire Weather Watch | CHS | 12 hr |
| Feb 11, 2:04 AM EST | Red Flag Warning | CHS | 17 hr |
| Feb 24, 3:39 AM EST | Wind Advisory | CHS | 15 hr |
| Feb 24, 12:04 PM EST | Tornado Watch | SPC | 7 hr |
| Feb 24, 1:50 PM EST | Mesoscale Discussion | SPC | 85 min |
| Feb 24, 3:33 PM EST | Severe Thunderstorm Warning | CHS | 57 min |
| Feb 24, 4:11 PM EST | Mesoscale Discussion | SPC | 64 min |
| Feb 24, 4:26 PM EST | Severe Thunderstorm Warning | CHS | 34 min |
| Feb 24, 4:57 PM EST | Severe Thunderstorm Warning | CHS | 63 min |
| Mar 1, 7:51 AM EST | Special Weather Statement | CHS | 24 min |
| Mar 5, 4:30 AM EST | Wind Advisory | CHS | 11 hr |
| Mar 13, 3:59 PM EDT | Special Weather Statement | CHS | 31 min |
| Mar 13, 4:28 PM EDT | Special Weather Statement | CHS | 32 min |
| Mar 14, 6:26 AM EDT | Dense Fog Advisory | CHS | 3 hr |
| Mar 16, 3:25 PM EDT | Mesoscale Discussion | SPC | 2 hr |
| Mar 16, 4:06 PM EDT | Special Weather Statement | CHS | 24 min |
| Mar 16, 4:25 PM EDT | Severe Thunderstorm Warning | CHS | 65 min |
| Mar 16, 4:41 PM EDT | Severe Thunderstorm Warning | CHS | 64 min |
| Mar 16, 5:26 PM EDT | Severe Thunderstorm Warning | CHS | 64 min |
| Mar 19, 5:56 PM EDT | Special Weather Statement | CHS | 34 min |
| Mar 21, 4:30 AM EDT | Dense Fog Advisory | CHS | 5 hr |
| Mar 23, 6:34 PM EDT | Special Weather Statement | CHS | 56 min |
| Mar 23, 6:55 PM EDT | Severe Thunderstorm Warning | CHS | 33 min |
| Mar 24, 12:29 PM EDT | Mesoscale Discussion | SPC | 61 min |
| Mar 24, 1:27 PM EDT | Special Weather Statement | CHS | 33 min |
| Mar 24, 1:53 PM EDT | Severe Thunderstorm Watch | SPC | 7 hr |
| Mar 24, 8:43 PM EDT | Severe Thunderstorm Watch | SPC | 5 hr |
| Mar 24, 9:37 PM EDT | Severe Thunderstorm Warning | CHS | 53 min |
| Mar 24, 10:03 PM EDT | Severe Thunderstorm Warning | CHS | 57 min |
| Mar 24, 10:20 PM EDT | Mesoscale Discussion | SPC | 115 min |
| Apr 2, 1:48 PM EDT | Mesoscale Discussion | SPC | 87 min |
| Apr 3, 3:44 PM EDT | Special Weather Statement | CHS | 31 min |
| Apr 3, 4:09 PM EDT | Severe Thunderstorm Warning | CHS | 66 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, 3:37 PM EDT | Mesoscale Discussion | SPC | 53 min |
| Apr 5, 6:35 PM EDT | Mesoscale Discussion | SPC | 85 min |
| Apr 12, 8:39 PM EDT | Frost Advisory | CHS | 11 hr |
| Apr 21, 4:20 AM EDT | Dense Fog Advisory | CHS | 5 hr |
| Apr 26, 7:11 AM EDT | Wind Advisory | CHS | 9 hr |
| May 2, 7:05 AM EDT | Dense Fog Advisory | CHS | 2 hr |
| May 3, 6:42 AM EDT | Dense Fog Advisory | CHS | 3 hr |
| May 4, 10:41 PM EDT | Special Weather Statement | CHS | 49 min |
| May 4, 11:32 PM EDT | Special Weather Statement | CHS | 43 min |
| May 9, 12:59 PM EDT | Mesoscale Discussion | SPC | 2 hr |
| May 9, 1:31 PM EDT | Special Weather Statement | CHS | 44 min |
| May 9, 2:00 PM EDT | Severe Thunderstorm Watch | SPC | 5 hr |
| May 9, 2:10 PM EDT | Special Weather Statement | CHS | 35 min |
| May 9, 2:50 PM EDT | Special Weather Statement | CHS | 40 min |
| May 9, 6:19 PM EDT | Special Weather Statement | CHS | 26 min |
| May 14, 4:31 PM EDT | Severe Thunderstorm Warning | CHS | 40 min |
| May 15, 2:27 PM EDT | Severe Thunderstorm Watch | SPC | 7 hr |
| May 15, 3:54 PM EDT | Severe Thunderstorm Warning | CHS | 20 min |
| May 15, 5:25 PM EDT | Severe Thunderstorm Warning | CHS | 65 min |
| May 15, 6:30 PM EDT | Mesoscale Discussion | SPC | 90 min |
| May 15, 8:42 PM EDT | Mesoscale Discussion | SPC | 63 min |
| May 17, 1:29 PM EDT | Special Weather Statement | CHS | 61 min |
| May 17, 2:32 PM EDT | Special Weather Statement | CHS | 58 min |
| May 22, 3:32 PM EDT | Severe Thunderstorm Watch | SPC | 5 hr |
| May 22, 5:06 PM EDT | Special Weather Statement | CHS | 24 min |
| May 25, 5:18 AM EDT | Dense Fog Advisory | CHS | 4 hr |
| May 27, 4:09 AM EDT | Flash Flood Watch | CHS | 60 hr |
| May 29, 12:20 PM EDT | Mesoscale Discussion | SPC | 55 min |
| May 29, 1:38 PM EDT | Special Weather Statement | CHS | 22 min |
| May 29, 3:53 PM EDT | Flash Flood Watch | CHS | 12 hr |
| May 29, 9:59 PM EDT | Areal Flood Advisory | CHS | 2 hr |
| Jun 1, 3:09 PM EDT | Severe Thunderstorm Warning | CHS | 39 min |
| Jun 1, 4:31 PM EDT | Mesoscale Discussion | SPC | 59 min |
| Jun 1, 5:24 PM EDT | Severe Thunderstorm Warning | CHS | 66 min |
| Jun 10, 3:34 PM EDT | Areal Flood Advisory | CHS | 56 min |
| Jun 10, 3:50 PM EDT | Special Weather Statement | CHS | 25 min |
| Jun 10, 4:17 PM EDT | Special Weather Statement | CHS | 43 min |
| Jun 11, 2:10 PM EDT | Special Weather Statement | CHS | 50 min |
| Jun 11, 2:29 PM EDT | Severe Thunderstorm Warning | CHS | 61 min |
| Jun 11, 2:35 PM EDT | Severe Thunderstorm Warning | CHS | 55 min |
| Jun 11, 3:53 PM EDT | Areal Flood Advisory | CHS | 112 min |
| Jun 13, 8:49 PM EDT | Special Weather Statement | CHS | 26 min |
| Jun 29, 4:10 AM EDT | Excessive Heat Watch | CHS | 23 hr |
| Jun 29, 4:10 AM EDT | Heat Advisory | CHS | 16 hr |
| Jun 30, 3:37 AM EDT | Excessive Heat Watch | CHS | 24 hr |
| Jun 30, 3:37 AM EDT | Excessive Heat Warning | CHS | 17 hr |
| Jul 1, 3:20 AM EDT | Excessive Heat Warning | CHS | 15 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, 6:10 PM EDT | Heat Advisory | CHS | 16 hr |
| Jul 1, 7:23 PM EDT | Severe Thunderstorm Warning | CHS | 67 min |
| Jul 1, 7:31 PM EDT | Severe Thunderstorm Warning | CHS | 59 min |
| Jul 1, 7:39 PM EDT | Mesoscale Discussion | SPC | 96 min |
| Jul 1, 8:25 PM EDT | Severe Thunderstorm Warning | CHS | 65 min |
| Jul 1, 9:45 PM EDT | Mesoscale Discussion | SPC | 60 min |
| Jul 3, 3:34 PM EDT | Severe Thunderstorm Warning | CHS | 56 min |
| Jul 3, 4:41 PM EDT | Special Weather Statement | CHS | 49 min |
| Jul 3, 6:59 PM EDT | Mesoscale Discussion | SPC | 3 hr |
| Jul 11, 1:30 PM EDT | Mesoscale Discussion | SPC | 2 hr |
| Jul 11, 2:48 PM EDT | Special Weather Statement | CHS | 27 min |
| Jul 11, 3:59 PM EDT | Special Weather Statement | CHS | 31 min |
| Jul 11, 4:53 PM EDT | Severe Thunderstorm Warning | CHS | 67 min |
| Jul 12, 1:45 PM EDT | Special Weather Statement | CHS | 30 min |
| Jul 16, 9:03 PM EDT | Special Weather Statement | CHS | 42 min |
| Jul 17, 3:22 PM EDT | Special Weather Statement | CHS | 38 min |
| Jul 22, 4:39 PM EDT | Mesoscale Discussion | SPC | 2 hr |
| Jul 24, 9:30 PM EDT | Severe Thunderstorm Warning | CHS | 60 min |
| Jul 24, 10:26 PM EDT | Severe Thunderstorm Warning | CHS | 64 min |
| Jul 26, 3:22 AM EDT | Heat Advisory | CHS | 17 hr |
| Jul 26, 3:17 PM EDT | Special Weather Statement | CHS | 28 min |
| Jul 26, 3:54 PM EDT | Special Weather Statement | CHS | 36 min |
| Jul 26, 4:21 PM EDT | Special Weather Statement | CHS | 24 min |
| Jul 26, 4:36 PM EDT | Severe Thunderstorm Warning | CHS | 24 min |
| Jul 27, 3:29 AM EDT | Heat Advisory | CHS | 15 hr |
| Jul 27, 2:08 PM EDT | Special Weather Statement | CHS | 37 min |
| Jul 27, 4:09 PM EDT | Severe Thunderstorm Warning | CHS | 66 min |
| Jul 27, 4:54 PM EDT | Severe Thunderstorm Warning | CHS | 66 min |
| Jul 29, 2:08 PM EDT | Severe Thunderstorm Warning | CHS | 52 min |
| Jul 29, 2:35 PM EDT | Mesoscale Discussion | SPC | 55 min |
| Jul 29, 2:55 PM EDT | Severe Thunderstorm Watch | SPC | 5 hr |
| Jul 29, 6:36 PM EDT | Mesoscale Discussion | SPC | 24 min |
| Jul 29, 8:59 PM EDT | Special Weather Statement | CHS | 46 min |
| Jul 30, 3:08 PM EDT | Special Weather Statement | CHS | 52 min |
| Jul 30, 3:57 PM EDT | Severe Thunderstorm Warning | CHS | 63 min |
| Jul 30, 4:27 PM EDT | Severe Thunderstorm Warning | CHS | 48 min |
| Aug 2, 1:11 PM EDT | Mesoscale Discussion | SPC | 64 min |
| Aug 2, 2:33 PM EDT | Severe Thunderstorm Watch | SPC | 5 hr |
| Aug 2, 2:37 PM EDT | Special Weather Statement | CHS | 23 min |
| Aug 2, 3:53 PM EDT | Special Weather Statement | CHS | 37 min |
| Aug 2, 4:01 PM EDT | Severe Thunderstorm Warning | CHS | 59 min |
| Aug 2, 4:24 PM EDT | Mesoscale Discussion | SPC | 66 min |
| Aug 5, 4:34 PM EDT | Areal Flood Advisory | CHS | 56 min |
| Aug 5, 5:26 PM EDT | Areal Flood Advisory | CHS | 41 min |
| Aug 7, 4:20 PM EDT | Areal Flood Advisory | CHS | 55 min |
| Aug 9, 7:43 PM EDT | Special Weather Statement | CHS | 47 min |
| Aug 11, 1:45 PM EDT | Severe Thunderstorm Warning | CHS | 60 min |
| Aug 11, 2:21 PM EDT | Special Weather Statement | CHS | 54 min |
| Aug 11, 5:43 PM EDT | Special Weather Statement | CHS | 47 min |
| Aug 14, 6:45 PM EDT | Mesoscale Discussion | SPC | 2 hr |
| Aug 16, 4:00 PM EDT | Special Weather Statement | CHS | 45 min |
| Aug 16, 4:16 PM EDT | Severe Thunderstorm Warning | CHS | 59 min |
| Aug 16, 4:43 PM EDT | Severe Thunderstorm Warning | CHS | 41 min |
| Aug 17, 4:21 PM EDT | Severe Thunderstorm Warning | CHS | 39 min |
| Aug 19, 10:33 AM EDT | Severe Thunderstorm Watch | SPC | 7 hr |
| Aug 19, 10:54 AM EDT | Special Weather Statement | CHS | 66 min |
| Aug 19, 11:14 AM EDT | Severe Thunderstorm Warning | CHS | 46 min |
| Aug 21, 7:45 PM EDT | Areal Flood Advisory | CHS | 60 min |
| Aug 21, 8:45 PM EDT | Areal Flood Advisory | CHS | 46 min |
| Aug 28, 4:56 PM EDT | Severe Thunderstorm Warning | CHS | 64 min |
| Aug 29, 8:34 PM EDT | Areal Flood Advisory | CHS | 86 min |
| Aug 29, 9:40 PM EDT | Flash Flood Warning | CHS | 3 hr |
| Sep 3, 1:52 PM EDT | Mesoscale Discussion | SPC | 53 min |
| Sep 8, 4:26 PM EDT | Special Weather Statement | CHS | 64 min |
| Sep 18, 9:39 AM EDT | Mesoscale Discussion | SPC | 66 min |
| Sep 18, 11:35 AM EDT | Mesoscale Discussion | SPC | 85 min |
| Sep 27, 7:01 AM EDT | Dense Fog Advisory | CHS | 3 hr |
| Sep 29, 4:07 PM EDT | Special Weather Statement | CHS | 23 min |
| Sep 29, 4:52 PM EDT | Special Weather Statement | CHS | 38 min |
| Sep 29, 8:56 PM EDT | Severe Thunderstorm Warning | CHS | 64 min |
| Oct 7, 5:55 AM EDT | Dense Fog Advisory | CHS | 4 hr |
| Oct 31, 3:36 PM EDT | Fire Weather Watch | CHS | 12 hr |
| Nov 4, 2:34 PM EST | Mesoscale Discussion | SPC | 2 hr |
| Nov 4, 3:08 PM EST | Special Weather Statement | CHS | 37 min |
| Nov 4, 3:46 PM EST | Severe Thunderstorm Warning | CHS | 59 min |
| Nov 4, 4:16 PM EST | Special Weather Statement | CHS | 29 min |
| Nov 4, 5:42 PM EST | Special Weather Statement | CHS | 33 min |
| Nov 7, 9:22 PM EST | Frost Advisory | CHS | 11 hr |
| Nov 8, 12:15 PM EST | Frost Advisory | CHS | 21 hr |
| Nov 8, 6:45 PM EST | Freeze Warning | CHS | 14 hr |
| Dec 3, 2:50 AM EST | Dense Fog Advisory | CHS | 7 hr |
| Dec 3, 9:42 PM EST | Dense Fog Advisory | CHS | 10 hr |
| Dec 8, 2:22 AM EST | Dense Fog Advisory | CHS | 8 hr |
| Dec 8, 10:38 PM EST | Dense Fog Advisory | CHS | 13 hr |
| Dec 10, 1:17 AM EST | Dense Fog Advisory | CHS | 9 hr |
| Dec 17, 2:28 PM EST | Mesoscale Discussion | SPC | 92 min |
| Dec 17, 2:55 PM EST | Tornado Watch | SPC | 2 hr |
| Dec 20, 4:01 PM EST | Wind Advisory | CHS | 27 hr |
| Dec 20, 7:47 PM EST | Special Weather Statement | CHS | 58 min |
| Dec 20, 8:45 PM EST | Special Weather Statement | CHS | 60 min |
| Dec 25, 4:16 PM EST | Wind Advisory | CHS | 32 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 | 40 |
| Severe Thunderstorm Watch | 10 |
| Tornado Watch | 3 |
| Mesoscale Discussion | 32 |
| Special Weather Statement | 49 |
| Flooding | |
| Flash Flood Warning | 1 |
| Flash Flood Watch | 2 |
| Areal Flood Advisory | 9 |
| Heat | |
| Excessive Heat Warning | 2 |
| Excessive Heat Watch | 2 |
| Heat Advisory | 4 |
| Cold | |
| Freeze Warning | 1 |
| Frost Advisory | 3 |
| Wind and dust | |
| Wind Advisory | 5 |
| Fire | |
| Red Flag Warning | 1 |
| Fire Weather Watch | 2 |
| Fog and smoke | |
| Dense Fog Advisory | 16 |
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.