Alert archive / South Carolina / Jasper County
Weather alerts in Jasper County, South Carolina, 2011
180 weather alerts in 2011, 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 2011. Tap one for its archive.
- Alerts
- 180
- Warnings
- 87
- Watches
- 14
- Advisories
- 9
- Busiest month
- August41 alerts
- Busiest day
- March 27, 201113 alerts
Over time
By month
Warning verification
How often warnings here had a storm report inside them, and how much warning the reports had.
Jasper County, 2011
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| Tornado warnings | 0 | 0 | ||||
| Severe thunderstorm warnings | 84 | 67 | 20% | 30 | 93% | 29 min |
| Flash flood warnings | 2 | 1 | 50% | 0 |
Each office's whole area, 2011
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| NWS Charleston, SC: tornado warnings | 9 | 2 | 78% | 10 | 90% | 21 min |
| NWS Charleston, SC: severe thunderstorm warnings | 299 | 217 | 27% | 591 | 89% | 26 min |
| NWS Charleston, SC: flash flood warnings | 10 | 4 | 60% | 22 | 86% | 47 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 25, 6:10 PM EST | Special Weather Statement | CHS | 80 min |
| Jan 25, 7:23 PM EST | Special Weather Statement | CHS | 82 min |
| Mar 26, 3:38 PM EDT | Mesoscale Discussion | SPC | 97 min |
| Mar 26, 7:40 PM EDT | Tornado Watch | SPC | 4 hr |
| Mar 26, 8:14 PM EDT | Severe Thunderstorm Warning | CHS | 61 min |
| Mar 26, 11:10 PM EDT | Mesoscale Discussion | SPC | 65 min |
| Mar 27, 8:33 AM EDT | Mesoscale Discussion | SPC | 117 min |
| Mar 27, 9:55 AM EDT | Severe Thunderstorm Watch | SPC | 7 hr |
| Mar 27, 11:51 AM EDT | Mesoscale Discussion | SPC | 84 min |
| Mar 27, 12:52 PM EDT | Special Weather Statement | CHS | 53 min |
| Mar 27, 12:57 PM EDT | Severe Thunderstorm Warning | CHS | 45 min |
| Mar 27, 1:29 PM EDT | Severe Thunderstorm Warning | CHS | 45 min |
| Mar 27, 1:48 PM EDT | Severe Thunderstorm Warning | CHS | 26 min |
| Mar 27, 2:58 PM EDT | Severe Thunderstorm Warning | CHS | 62 min |
| Mar 27, 4:02 PM EDT | Severe Thunderstorm Warning | CHS | 58 min |
| Mar 27, 4:11 PM EDT | Severe Thunderstorm Warning | CHS | 64 min |
| Mar 27, 4:53 PM EDT | Severe Thunderstorm Warning | CHS | 48 min |
| Apr 4, 9:26 AM EDT | River Flood Warning | CHS | 11 days |
| Apr 5, 2:41 AM EDT | Tornado Watch | SPC | 6 hr |
| Apr 5, 2:55 AM EDT | Mesoscale Discussion | SPC | 2 hr |
| Apr 5, 4:34 AM EDT | Severe Thunderstorm Warning | CHS | 56 min |
| Apr 5, 4:49 AM EDT | Severe Thunderstorm Warning | CHS | 56 min |
| Apr 5, 5:44 AM EDT | Severe Thunderstorm Warning | CHS | 61 min |
| Apr 9, 2:44 PM EDT | Severe Thunderstorm Watch | SPC | 6 hr |
| Apr 16, 10:39 AM EDT | Mesoscale Discussion | SPC | 2 hr |
| Apr 16, 12:02 PM EDT | Tornado Watch | SPC | 11 hr |
| Apr 16, 2:28 PM EDT | Mesoscale Discussion | SPC | 92 min |
| Apr 16, 4:49 PM EDT | Mesoscale Discussion | SPC | 86 min |
| Apr 21, 5:40 PM EDT | Mesoscale Discussion | SPC | 3 hr |
| Apr 21, 8:28 PM EDT | Special Weather Statement | CHS | 32 min |
| Apr 21, 8:34 PM EDT | Severe Thunderstorm Warning | CHS | 56 min |
| Apr 22, 3:45 PM EDT | Special Weather Statement | CHS | 30 min |
| Apr 22, 4:12 PM EDT | Special Weather Statement | CHS | 33 min |
| Apr 22, 4:37 PM EDT | Special Weather Statement | CHS | 23 min |
| Apr 22, 5:00 PM EDT | Severe Thunderstorm Warning | CHS | 45 min |
| Apr 22, 5:30 PM EDT | Severe Thunderstorm Warning | CHS | 60 min |
| Apr 22, 6:13 PM EDT | Special Weather Statement | CHS | 32 min |
| Apr 28, 4:30 AM EDT | Tornado Watch | SPC | 10 hr |
| Apr 28, 8:48 AM EDT | Tornado Watch | SPC | 7 hr |
| Apr 28, 11:22 AM EDT | Mesoscale Discussion | SPC | 53 min |
| May 13, 7:47 PM EDT | Severe Thunderstorm Warning | CHS | 58 min |
| May 13, 8:27 PM EDT | Severe Thunderstorm Warning | CHS | 63 min |
| May 14, 4:41 PM EDT | Severe Thunderstorm Watch | SPC | 4 hr |
| May 14, 6:44 PM EDT | Mesoscale Discussion | SPC | 61 min |
| May 27, 1:49 PM EDT | Special Weather Statement | CHS | 26 min |
| May 27, 2:23 PM EDT | Special Weather Statement | CHS | 52 min |
| May 27, 2:30 PM EDT | Severe Thunderstorm Warning | CHS | 45 min |
| May 28, 2:09 PM EDT | Severe Thunderstorm Warning | CHS | 45 min |
| May 28, 3:16 PM EDT | Special Weather Statement | CHS | 29 min |
| May 28, 3:30 PM EDT | Severe Thunderstorm Warning | CHS | 60 min |
| Jun 2, 10:55 PM EDT | Severe Thunderstorm Warning | CHS | 48 min |
| Jun 3, 5:54 PM EDT | Mesoscale Discussion | SPC | 2 hr |
| Jun 6, 1:49 PM EDT | Special Weather Statement | CHS | 26 min |
| Jun 6, 2:20 PM EDT | Special Weather Statement | CHS | 40 min |
| Jun 6, 2:43 PM EDT | Severe Thunderstorm Warning | CHS | 62 min |
| Jun 12, 6:52 PM EDT | Special Weather Statement | CHS | 38 min |
| Jun 15, 9:27 PM EDT | Severe Thunderstorm Watch | SPC | 6 hr |
| Jun 15, 10:11 PM EDT | Mesoscale Discussion | SPC | 94 min |
| Jun 15, 10:41 PM EDT | Severe Thunderstorm Warning | CHS | 64 min |
| Jun 15, 10:45 PM EDT | Severe Thunderstorm Warning | CHS | 60 min |
| Jun 15, 11:27 PM EDT | Severe Thunderstorm Warning | CHS | 63 min |
| Jun 18, 6:49 PM EDT | Mesoscale Discussion | SPC | 86 min |
| Jun 18, 7:20 PM EDT | Severe Thunderstorm Watch | SPC | 5 hr |
| Jun 18, 9:03 PM EDT | Mesoscale Discussion | SPC | 87 min |
| Jun 18, 9:34 PM EDT | Severe Thunderstorm Warning | CHS | 56 min |
| Jun 18, 10:11 PM EDT | Severe Thunderstorm Warning | CHS | 64 min |
| Jun 18, 10:37 PM EDT | Severe Thunderstorm Warning | CHS | 53 min |
| Jun 18, 11:15 PM EDT | Severe Thunderstorm Warning | CHS | 60 min |
| Jun 18, 11:27 PM EDT | Severe Thunderstorm Warning | CHS | 50 min |
| Jun 23, 1:40 PM EDT | Mesoscale Discussion | SPC | 3 hr |
| Jun 23, 2:36 PM EDT | Severe Thunderstorm Watch | SPC | 6 hr |
| Jun 23, 4:47 PM EDT | Severe Thunderstorm Warning | CHS | 58 min |
| Jun 23, 5:42 PM EDT | Special Weather Statement | CHS | 33 min |
| Jun 23, 5:55 PM EDT | Severe Thunderstorm Warning | CHS | 65 min |
| Jun 23, 6:31 PM EDT | Severe Thunderstorm Warning | CHS | 59 min |
| Jun 26, 5:56 PM EDT | Severe Thunderstorm Warning | CHS | 49 min |
| Jun 26, 6:12 PM EDT | Severe Thunderstorm Warning | CHS | 63 min |
| Jun 28, 1:53 PM EDT | Mesoscale Discussion | SPC | 97 min |
| Jun 29, 5:58 PM EDT | Areal Flood Advisory | CHS | 3 hr |
| Jun 29, 6:22 PM EDT | Flash Flood Warning | CHS | 3 hr |
| Jun 30, 2:52 PM EDT | Mesoscale Discussion | SPC | 2 hr |
| Jun 30, 4:35 PM EDT | Special Weather Statement | CHS | 25 min |
| Jun 30, 4:39 PM EDT | Severe Thunderstorm Warning | CHS | 51 min |
| Jul 1, 5:02 PM EDT | Severe Thunderstorm Warning | CHS | 58 min |
| Jul 1, 5:32 PM EDT | Severe Thunderstorm Warning | CHS | 58 min |
| Jul 1, 5:59 PM EDT | Severe Thunderstorm Warning | CHS | 61 min |
| Jul 1, 6:23 PM EDT | Severe Thunderstorm Warning | CHS | 67 min |
| Jul 5, 2:48 PM EDT | Special Weather Statement | CHS | 27 min |
| Jul 5, 3:41 PM EDT | Special Weather Statement | CHS | 34 min |
| Jul 6, 3:23 PM EDT | Severe Thunderstorm Warning | CHS | 67 min |
| Jul 6, 3:57 PM EDT | Special Weather Statement | CHS | 48 min |
| Jul 6, 4:02 PM EDT | Severe Thunderstorm Warning | CHS | 43 min |
| Jul 6, 4:22 PM EDT | Severe Thunderstorm Warning | CHS | 38 min |
| Jul 9, 4:42 PM EDT | Severe Thunderstorm Warning | CHS | 63 min |
| Jul 9, 5:27 PM EDT | Severe Thunderstorm Warning | CHS | 63 min |
| Jul 9, 5:53 PM EDT | Severe Thunderstorm Warning | CHS | 52 min |
| Jul 11, 4:45 PM EDT | Special Weather Statement | CHS | 45 min |
| Jul 11, 6:20 PM EDT | Areal Flood Advisory | CHS | 55 min |
| Jul 15, 1:04 AM EDT | Areal Flood Advisory | CHS | 56 min |
| Jul 15, 2:32 AM EDT | Flash Flood Warning | CHS | 118 min |
| Jul 26, 1:15 PM EDT | Areal Flood Advisory | CHS | 2 hr |
| Jul 31, 5:37 PM EDT | Severe Thunderstorm Warning | CHS | 68 min |
| Jul 31, 6:41 PM EDT | Severe Thunderstorm Warning | CHS | 64 min |
| Jul 31, 7:50 PM EDT | Special Weather Statement | CHS | 25 min |
| Aug 6, 4:29 PM EDT | Special Weather Statement | CHS | 31 min |
| Aug 8, 5:32 PM EDT | Severe Thunderstorm Warning | CHS | 58 min |
| Aug 8, 6:00 PM EDT | Severe Thunderstorm Warning | CHS | 60 min |
| Aug 8, 6:26 PM EDT | Severe Thunderstorm Warning | CHS | 64 min |
| Aug 8, 7:26 PM EDT | Severe Thunderstorm Warning | CHS | 64 min |
| Aug 9, 6:02 PM EDT | Mesoscale Discussion | SPC | 58 min |
| Aug 9, 6:43 PM EDT | Severe Thunderstorm Warning | CHS | 62 min |
| Aug 9, 7:26 PM EDT | Severe Thunderstorm Warning | CHS | 64 min |
| Aug 9, 7:46 PM EDT | Severe Thunderstorm Warning | CHS | 59 min |
| Aug 9, 7:57 PM EDT | Severe Thunderstorm Warning | CHS | 63 min |
| Aug 12, 1:46 PM EDT | Mesoscale Discussion | SPC | 2 hr |
| Aug 12, 3:42 PM EDT | Special Weather Statement | CHS | 33 min |
| Aug 12, 3:56 PM EDT | Severe Thunderstorm Warning | CHS | 49 min |
| Aug 12, 4:10 PM EDT | Severe Thunderstorm Warning | CHS | 65 min |
| Aug 13, 4:29 PM EDT | Severe Thunderstorm Warning | CHS | 61 min |
| Aug 13, 5:05 PM EDT | Severe Thunderstorm Warning | CHS | 55 min |
| Aug 13, 5:17 PM EDT | Severe Thunderstorm Warning | CHS | 58 min |
| Aug 13, 5:41 PM EDT | Severe Thunderstorm Warning | CHS | 64 min |
| Aug 13, 6:00 PM EDT | Severe Thunderstorm Warning | CHS | 45 min |
| Aug 13, 6:07 PM EDT | Severe Thunderstorm Warning | CHS | 53 min |
| Aug 13, 6:45 PM EDT | Severe Thunderstorm Warning | CHS | 60 min |
| Aug 14, 2:24 PM EDT | Mesoscale Discussion | SPC | 36 min |
| Aug 14, 2:40 PM EDT | Severe Thunderstorm Watch | SPC | 6 hr |
| Aug 14, 3:24 PM EDT | Special Weather Statement | CHS | 51 min |
| Aug 14, 4:59 PM EDT | Severe Thunderstorm Warning | CHS | 61 min |
| Aug 14, 6:01 PM EDT | Severe Thunderstorm Warning | CHS | 59 min |
| Aug 14, 6:33 PM EDT | Severe Thunderstorm Warning | CHS | 57 min |
| Aug 14, 6:59 PM EDT | Severe Thunderstorm Warning | CHS | 61 min |
| Aug 20, 4:30 PM EDT | Special Weather Statement | CHS | 30 min |
| Aug 20, 4:59 PM EDT | Special Weather Statement | CHS | 31 min |
| Aug 22, 2:02 PM EDT | Mesoscale Discussion | SPC | 58 min |
| Aug 22, 3:11 PM EDT | Severe Thunderstorm Warning | CHS | 64 min |
| Aug 22, 4:02 PM EDT | Severe Thunderstorm Warning | CHS | 58 min |
| Aug 22, 5:21 PM EDT | Severe Thunderstorm Warning | CHS | 54 min |
| Aug 22, 10:32 PM EDT | Severe Thunderstorm Warning | CHS | 58 min |
| Aug 23, 3:39 PM EDT | Special Weather Statement | CHS | 51 min |
| Aug 23, 4:29 PM EDT | Special Weather Statement | CHS | 46 min |
| Aug 24, 3:45 PM EDT | Special Weather Statement | CHS | 45 min |
| Aug 26, 6:33 PM EDT | Special Weather Statement | CHS | 42 min |
| Aug 29, 2:13 PM EDT | Mesoscale Discussion | SPC | 2 hr |
| Aug 30, 2:19 PM EDT | Special Weather Statement | CHS | 26 min |
| Sep 5, 5:00 PM EDT | Severe Thunderstorm Warning | CHS | 45 min |
| Sep 5, 5:18 PM EDT | Severe Thunderstorm Warning | CHS | 42 min |
| Sep 5, 5:48 PM EDT | Mesoscale Discussion | SPC | 87 min |
| Sep 5, 8:36 PM EDT | Mesoscale Discussion | SPC | 84 min |
| Sep 6, 10:11 AM EDT | Tornado Watch | SPC | 7 hr |
| Sep 15, 6:38 PM EDT | Special Weather Statement | CHS | 52 min |
| Sep 21, 3:16 AM EDT | Special Weather Statement | CHS | 29 min |
| Sep 24, 5:53 PM EDT | Areal Flood Advisory | CHS | 53 min |
| Sep 24, 9:25 PM EDT | Areal Flood Advisory | CHS | 72 min |
| Sep 25, 2:19 PM EDT | Severe Thunderstorm Warning | CHS | 56 min |
| Sep 25, 3:15 PM EDT | Severe Thunderstorm Warning | CHS | 45 min |
| Sep 25, 4:02 PM EDT | Severe Thunderstorm Warning | CHS | 58 min |
| Sep 25, 6:04 PM EDT | Mesoscale Discussion | SPC | 116 min |
| Sep 25, 6:25 PM EDT | Areal Flood Advisory | CHS | 95 min |
| Sep 25, 6:33 PM EDT | Special Weather Statement | CHS | 27 min |
| Sep 25, 9:27 PM EDT | Areal Flood Advisory | CHS | 77 min |
| Sep 26, 2:05 PM EDT | Special Weather Statement | CHS | 55 min |
| Sep 26, 6:04 PM EDT | Mesoscale Discussion | SPC | 116 min |
| Sep 26, 8:03 PM EDT | Special Weather Statement | CHS | 27 min |
| Sep 26, 8:14 PM EDT | Special Weather Statement | CHS | 31 min |
| Sep 28, 1:16 AM EDT | Severe Thunderstorm Warning | CHS | 59 min |
| Sep 28, 1:42 AM EDT | Severe Thunderstorm Warning | CHS | 63 min |
| Oct 10, 8:23 PM EDT | Areal Flood Advisory | CHS | 82 min |
| Oct 13, 5:53 PM EDT | Mesoscale Discussion | SPC | 97 min |
| Oct 13, 7:44 PM EDT | Severe Thunderstorm Warning | CHS | 61 min |
| Oct 13, 8:21 PM EDT | Severe Thunderstorm Warning | CHS | 54 min |
| Oct 13, 8:33 PM EDT | Severe Thunderstorm Warning | CHS | 57 min |
| Nov 16, 4:06 PM EST | Mesoscale Discussion | SPC | 114 min |
| Nov 16, 4:30 PM EST | Tornado Watch | SPC | 7 hr |
| Nov 16, 6:48 PM EST | Mesoscale Discussion | SPC | 87 min |
| Nov 16, 8:26 PM EST | Severe Thunderstorm Warning | CHS | 64 min |
| Nov 16, 8:58 PM EST | Severe Thunderstorm Warning | CHS | 43 min |
| Nov 16, 10:20 PM EST | Mesoscale Discussion | SPC | 55 min |
| Nov 28, 4:39 PM EST | Special Weather Statement | CHS | 51 min |
| Dec 7, 2:44 PM EST | Special Weather Statement | CHS | 46 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 | 84 |
| Severe Thunderstorm Watch | 7 |
| Tornado Watch | 7 |
| Mesoscale Discussion | 31 |
| Special Weather Statement | 39 |
| Flooding | |
| Flash Flood Warning | 2 |
| River Flood Warning | 1 |
| Areal Flood Advisory | 9 |
The busiest days
Days with the most alerts issued, by UTC date.
Nearby
Alerts in force nowTornadoes on recordForecastThe radar archive20102012
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.