Alert archive / South Carolina / Jasper County
Weather alerts in Jasper County, South Carolina, 2012
155 weather alerts in 2012, from the National Weather Service and the Storm Prediction Center. An alert counts here when it covered this county.
Jasper County and its neighbors
Each county as a circle sized by its count in 2012. Tap one for its archive.
- Alerts
- 155
- Warnings
- 66
- Watches
- 14
- Advisories
- 7
- Busiest month
- July43 alerts
- Busiest day
- July 29, 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.
0 of 3 tornado warnings covering Jasper County in 2012 had a tornado report inside them; 0 of 2 tornado reports fell inside a warning.
Jasper County, 2012
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| Tornado warnings | 3 | 0 | 100% | 2 | 0% | |
| Severe thunderstorm warnings | 62 | 46 | 26% | 33 | 79% | 20 min |
| Flash flood warnings | 1 | 0 | 100% | 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 |
|---|---|---|---|
| Feb 19, 12:20 PM EST | Mesoscale Discussion | SPC | 85 min |
| Feb 24, 12:04 PM EST | Tornado Watch | SPC | 7 hr |
| Feb 24, 1:50 PM EST | Mesoscale Discussion | SPC | 85 min |
| Feb 24, 3:24 PM EST | Severe Thunderstorm Warning | CHS | 66 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, 1:03 PM EST | Special Weather Statement | CHS | 27 min |
| Mar 1, 1:44 PM EST | Mesoscale Discussion | SPC | 91 min |
| Mar 1, 2:23 PM EST | Special Weather Statement | CHS | 37 min |
| Mar 3, 11:03 AM EST | Tornado Warning | CHS | 27 min |
| Mar 13, 4:56 PM EDT | Special Weather Statement | CHS | 34 min |
| Mar 13, 5:35 PM EDT | Special Weather Statement | CHS | 25 min |
| Mar 16, 3:25 PM EDT | Mesoscale Discussion | SPC | 2 hr |
| Mar 16, 4:25 PM EDT | Severe Thunderstorm Warning | CHS | 65 min |
| Mar 16, 5:26 PM EDT | Severe Thunderstorm Warning | CHS | 64 min |
| Mar 16, 5:50 PM EDT | Severe Thunderstorm Warning | CHS | 55 min |
| Mar 16, 6:48 PM EDT | Special Weather Statement | CHS | 42 min |
| Mar 16, 7:14 PM EDT | Special Weather Statement | CHS | 31 min |
| Mar 17, 8:22 PM EDT | Severe Thunderstorm Warning | CHS | 28 min |
| Mar 23, 6:55 PM EDT | Severe Thunderstorm Warning | CHS | 33 min |
| Mar 24, 12:17 PM EDT | Severe Thunderstorm Warning | CHS | 58 min |
| Mar 24, 12:29 PM EDT | Mesoscale Discussion | SPC | 61 min |
| Mar 24, 1:13 PM EDT | Severe Thunderstorm Warning | CHS | 62 min |
| Mar 24, 1:53 PM EDT | Severe Thunderstorm Watch | SPC | 7 hr |
| Mar 24, 2:13 PM EDT | Severe Thunderstorm Warning | CHS | 62 min |
| Mar 24, 8:43 PM EDT | Severe Thunderstorm Watch | SPC | 5 hr |
| Mar 24, 10:03 PM EDT | Severe Thunderstorm Warning | CHS | 57 min |
| Mar 24, 10:20 PM EDT | Mesoscale Discussion | SPC | 115 min |
| Mar 25, 12:33 AM EDT | Mesoscale Discussion | SPC | 57 min |
| Apr 2, 1:48 PM EDT | Mesoscale Discussion | SPC | 87 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, 6:10 PM EDT | Special Weather Statement | CHS | 35 min |
| Apr 5, 6:35 PM EDT | Mesoscale Discussion | SPC | 85 min |
| Apr 5, 6:51 PM EDT | Severe Thunderstorm Warning | CHS | 54 min |
| May 9, 12:59 PM EDT | Mesoscale Discussion | SPC | 2 hr |
| May 9, 2:00 PM EDT | Severe Thunderstorm Watch | SPC | 5 hr |
| May 9, 2:50 PM EDT | Special Weather Statement | CHS | 40 min |
| May 9, 3:18 PM EDT | Severe Thunderstorm Warning | CHS | 57 min |
| May 9, 4:14 PM EDT | Areal Flood Advisory | CHS | 91 min |
| May 9, 4:40 PM EDT | Severe Thunderstorm Warning | CHS | 38 min |
| May 9, 7:04 PM EDT | Mesoscale Discussion | SPC | 26 min |
| May 14, 2:09 PM EDT | Severe Thunderstorm Warning | CHS | 15 min |
| May 14, 4:25 PM EDT | Special Weather Statement | CHS | 35 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, 4:42 PM EDT | Severe Thunderstorm Warning | CHS | 63 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 17, 2:49 PM EDT | Special Weather Statement | CHS | 56 min |
| May 17, 4:45 PM EDT | Areal Flood Advisory | CHS | 60 min |
| May 22, 3:32 PM EDT | Severe Thunderstorm Watch | SPC | 5 hr |
| May 22, 5:28 PM EDT | Severe Thunderstorm Warning | CHS | 45 min |
| May 29, 12:20 PM EDT | Mesoscale Discussion | SPC | 55 min |
| May 29, 12:55 PM EDT | Special Weather Statement | CHS | 50 min |
| May 29, 1:38 PM EDT | Special Weather Statement | CHS | 22 min |
| May 29, 9:59 PM EDT | Areal Flood Advisory | CHS | 2 hr |
| May 29, 10:36 PM EDT | Flash Flood Warning | CHS | 2 hr |
| May 31, 1:37 PM EDT | Severe Thunderstorm Warning | CHS | 53 min |
| Jun 1, 5:51 PM EDT | Special Weather Statement | CHS | 39 min |
| Jun 1, 6:28 PM EDT | Special Weather Statement | CHS | 32 min |
| Jun 4, 1:09 PM EDT | Severe Thunderstorm Watch | SPC | 3 hr |
| Jun 5, 12:24 PM EDT | Severe Thunderstorm Watch | SPC | 9 hr |
| 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 11, 4:45 PM EDT | Special Weather Statement | CHS | 30 min |
| Jun 11, 5:13 PM EDT | Special Weather Statement | CHS | 32 min |
| Jun 11, 5:23 PM EDT | Severe Thunderstorm Warning | CHS | 37 min |
| Jun 11, 5:24 PM EDT | Tornado Warning | CHS | 36 min |
| Jun 12, 5:03 PM EDT | Special Weather Statement | CHS | 42 min |
| Jun 12, 5:32 PM EDT | Special Weather Statement | CHS | 43 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, 7:23 PM EDT | Severe Thunderstorm Warning | CHS | 67 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, 9:00 PM EDT | Severe Thunderstorm Warning | CHS | 60 min |
| Jul 1, 9:45 PM EDT | Mesoscale Discussion | SPC | 60 min |
| Jul 3, 6:59 PM EDT | Mesoscale Discussion | SPC | 3 hr |
| Jul 5, 4:39 PM EDT | Severe Thunderstorm Warning | CHS | 46 min |
| Jul 5, 4:59 PM EDT | Special Weather Statement | CHS | 31 min |
| Jul 6, 2:31 PM EDT | Special Weather Statement | CHS | 29 min |
| Jul 6, 2:37 PM EDT | Severe Thunderstorm Warning | CHS | 53 min |
| Jul 11, 1:30 PM EDT | Mesoscale Discussion | SPC | 2 hr |
| Jul 11, 2:14 PM EDT | Special Weather Statement | CHS | 31 min |
| Jul 11, 2:16 PM EDT | Special Weather Statement | CHS | 29 min |
| Jul 17, 4:39 PM EDT | Severe Thunderstorm Warning | CHS | 66 min |
| Jul 17, 4:57 PM EDT | Severe Thunderstorm Warning | CHS | 63 min |
| Jul 20, 4:59 PM EDT | Special Weather Statement | CHS | 31 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 25, 4:51 PM EDT | Special Weather Statement | CHS | 24 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 27, 5:19 PM EDT | Severe Thunderstorm Warning | CHS | 56 min |
| Jul 27, 7:03 PM EDT | Severe Thunderstorm Warning | CHS | 37 min |
| Jul 28, 5:18 PM EDT | Severe Thunderstorm Warning | CHS | 57 min |
| Jul 28, 5:29 PM EDT | Severe Thunderstorm Warning | CHS | 49 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, 2:47 PM EDT | Severe Thunderstorm Warning | CHS | 58 min |
| Jul 29, 2:55 PM EDT | Severe Thunderstorm Watch | SPC | 5 hr |
| Jul 29, 3:37 PM EDT | Severe Thunderstorm Warning | CHS | 53 min |
| Jul 29, 3:43 PM EDT | Severe Thunderstorm Warning | CHS | 62 min |
| Jul 29, 4:06 PM EDT | Tornado Warning | CHS | 19 min |
| Jul 29, 4:21 PM EDT | Severe Thunderstorm Warning | CHS | 54 min |
| 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, 3:57 PM EDT | Severe Thunderstorm Warning | CHS | 63 min |
| Jul 30, 4:27 PM EDT | Severe Thunderstorm Warning | CHS | 48 min |
| Jul 30, 5:13 PM EDT | Severe Thunderstorm Warning | CHS | 62 min |
| Jul 30, 6:14 PM EDT | Severe Thunderstorm Warning | CHS | 31 min |
| Jul 31, 6:32 PM EDT | Special Weather Statement | CHS | 28 min |
| Aug 2, 1:55 PM EDT | Severe Thunderstorm Warning | CHS | 65 min |
| Aug 2, 2:33 PM EDT | Severe Thunderstorm Watch | SPC | 5 hr |
| Aug 2, 4:01 PM EDT | Severe Thunderstorm Warning | CHS | 59 min |
| Aug 2, 4:24 PM EDT | Mesoscale Discussion | SPC | 66 min |
| Aug 7, 2:29 PM EDT | Areal Flood Advisory | CHS | 61 min |
| Aug 9, 6:52 PM EDT | Severe Thunderstorm Warning | CHS | 53 min |
| Aug 11, 2:52 PM EDT | Special Weather Statement | CHS | 53 min |
| Aug 11, 4:04 PM EDT | Severe Thunderstorm Warning | CHS | 56 min |
| Aug 16, 2:55 PM EDT | Severe Thunderstorm Warning | CHS | 65 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, 2:27 PM EDT | Severe Thunderstorm Warning | CHS | 28 min |
| Aug 17, 3:15 PM EDT | Special Weather Statement | CHS | 30 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 28, 3:53 PM EDT | Areal Flood Advisory | CHS | 2 hr |
| Aug 28, 4:56 PM EDT | Severe Thunderstorm Warning | CHS | 64 min |
| Aug 28, 5:58 PM EDT | Special Weather Statement | CHS | 47 min |
| Sep 3, 1:45 PM EDT | Special Weather Statement | CHS | 30 min |
| Sep 3, 1:52 PM EDT | Mesoscale Discussion | SPC | 53 min |
| Sep 3, 2:12 PM EDT | Special Weather Statement | CHS | 33 min |
| Sep 3, 2:45 PM EDT | Special Weather Statement | CHS | 45 min |
| Sep 4, 5:26 PM EDT | Special Weather Statement | CHS | 49 min |
| Sep 7, 5:57 PM EDT | Special Weather Statement | CHS | 33 min |
| Sep 18, 9:39 AM EDT | Mesoscale Discussion | SPC | 66 min |
| Sep 18, 11:35 AM EDT | Mesoscale Discussion | SPC | 85 min |
| Sep 29, 7:16 PM EDT | Special Weather Statement | CHS | 29 min |
| Sep 29, 7:24 PM EDT | Severe Thunderstorm Warning | CHS | 51 min |
| Oct 7, 6:34 PM EDT | Areal Flood Advisory | CHS | 56 min |
| Nov 4, 2:34 PM EST | Mesoscale Discussion | SPC | 2 hr |
| Nov 4, 3:46 PM EST | Severe Thunderstorm Warning | CHS | 59 min |
| Dec 17, 2:28 PM EST | Mesoscale Discussion | SPC | 92 min |
| Dec 17, 2:55 PM EST | Tornado Watch | SPC | 2 hr |
| Dec 17, 3:47 PM EST | Severe Thunderstorm Warning | CHS | 34 min |
| Dec 17, 3:57 PM EST | Severe Thunderstorm Warning | CHS | 63 min |
| Dec 20, 7:47 PM EST | Special Weather Statement | CHS | 58 min |
| Dec 20, 8:45 PM EST | Special Weather Statement | CHS | 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 | 62 |
| Tornado Warning | 3 |
| Severe Thunderstorm Watch | 12 |
| Tornado Watch | 2 |
| Mesoscale Discussion | 30 |
| Special Weather Statement | 38 |
| Flooding | |
| Flash Flood Warning | 1 |
| Areal Flood Advisory | 7 |
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.