Alert archive / South Carolina / Georgetown County
Weather alerts in Georgetown County, South Carolina, 2011
191 weather alerts in 2011, from the National Weather Service and the Storm Prediction Center. An alert counts here when it covered this county.
Georgetown County and its neighbors
Each county as a circle sized by its count in 2011. Tap one for its archive.
- Alerts
- 191
- Warnings
- 40
- Watches
- 20
- Advisories
- 37
- Busiest month
- July38 alerts
- Busiest day
- April 16, 20119 alerts
Over time
By month
Warning verification
How often warnings here had a storm report inside them, and how much warning the reports had.
1 of 4 tornado warnings covering Georgetown County in 2011 had a tornado report inside them; 1 of 1 tornado reports fell inside a warning, on average 17 minutes after it went out.
Georgetown County, 2011
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| Tornado warnings | 4 | 1 | 75% | 1 | 100% | 17 min |
| Severe thunderstorm warnings | 26 | 18 | 31% | 21 | 76% | 30 min |
| Flash flood warnings | 1 | 0 | 100% | 0 |
Each office's whole area, 2011
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| NWS Wilmington, NC: tornado warnings | 32 | 10 | 69% | 18 | 78% | 23 min |
| NWS Wilmington, NC: severe thunderstorm warnings | 166 | 123 | 26% | 383 | 83% | 28 min |
| NWS Wilmington, NC: flash flood warnings | 2 | 1 | 50% | 3 | 100% | 39 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 |
|---|---|---|---|
| Mar 6, 3:49 PM EST | Mesoscale Discussion | SPC | 86 min |
| Mar 10, 2:49 PM EST | Special Weather Statement | ILM | 56 min |
| Apr 5, 3:34 AM EDT | Mesoscale Discussion | SPC | 116 min |
| Apr 5, 4:00 AM EDT | Tornado Watch | SPC | 6 hr |
| Apr 5, 4:53 AM EDT | Severe Thunderstorm Warning | ILM | 82 min |
| Apr 5, 6:20 AM EDT | Severe Thunderstorm Warning | ILM | 25 min |
| Apr 5, 9:58 AM EDT | Special Weather Statement | ILM | 32 min |
| Apr 9, 7:59 PM EDT | Mesoscale Discussion | SPC | 61 min |
| Apr 9, 8:21 PM EDT | Severe Thunderstorm Watch | SPC | 5 hr |
| Apr 9, 8:56 PM EDT | Severe Thunderstorm Warning | ILM | 79 min |
| Apr 9, 10:18 PM EDT | Special Weather Statement | ILM | 57 min |
| Apr 9, 10:39 PM EDT | Mesoscale Discussion | SPC | 66 min |
| Apr 9, 10:50 PM EDT | Special Weather Statement | ILM | 85 min |
| 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, 3:40 PM EDT | Severe Thunderstorm Warning | ILM | 35 min |
| Apr 16, 4:49 PM EDT | Mesoscale Discussion | SPC | 86 min |
| Apr 16, 5:03 PM EDT | Tornado Warning | ILM | 42 min |
| Apr 16, 5:28 PM EDT | Tornado Warning | ILM | 47 min |
| Apr 16, 6:19 PM EDT | Tornado Warning | ILM | 26 min |
| Apr 16, 6:59 PM EDT | Mesoscale Discussion | SPC | 91 min |
| Apr 21, 4:55 PM EDT | Special Weather Statement | ILM | 35 min |
| Apr 21, 5:16 PM EDT | Severe Thunderstorm Warning | ILM | 40 min |
| Apr 21, 5:40 PM EDT | Mesoscale Discussion | SPC | 3 hr |
| Apr 26, 2:16 PM EDT | Mesoscale Discussion | SPC | 59 min |
| Apr 28, 8:48 AM EDT | Tornado Watch | SPC | 7 hr |
| Apr 28, 11:22 AM EDT | Mesoscale Discussion | SPC | 53 min |
| Apr 28, 3:19 PM EDT | Tornado Watch | SPC | 4 hr |
| May 6, 10:45 PM EDT | Dense Fog Advisory | ILM | 10 hr |
| May 10, 3:20 PM EDT | Severe Thunderstorm Watch | SPC | 8 hr |
| May 10, 6:02 PM EDT | Mesoscale Discussion | SPC | 58 min |
| May 10, 6:19 PM EDT | Severe Thunderstorm Warning | ILM | 56 min |
| May 10, 7:12 PM EDT | Severe Thunderstorm Warning | ILM | 63 min |
| May 10, 7:16 PM EDT | Severe Thunderstorm Warning | ILM | 31 min |
| May 10, 7:24 PM EDT | Tornado Warning | ILM | 51 min |
| May 10, 8:10 PM EDT | Severe Thunderstorm Warning | ILM | 65 min |
| May 10, 9:01 PM EDT | Mesoscale Discussion | SPC | 59 min |
| May 10, 9:14 PM EDT | Severe Thunderstorm Warning | ILM | 31 min |
| May 10, 9:45 PM EDT | Special Weather Statement | ILM | 60 min |
| May 10, 10:23 PM EDT | Severe Thunderstorm Warning | ILM | 37 min |
| May 11, 1:35 AM EDT | Mesoscale Discussion | SPC | 25 min |
| May 11, 1:41 AM EDT | Severe Thunderstorm Watch | SPC | 3 hr |
| May 11, 3:02 AM EDT | Severe Thunderstorm Warning | ILM | 73 min |
| May 11, 3:34 AM EDT | Mesoscale Discussion | SPC | 56 min |
| May 14, 12:26 PM EDT | Special Weather Statement | ILM | 49 min |
| May 14, 12:34 PM EDT | Severe Thunderstorm Warning | ILM | 41 min |
| May 14, 1:19 PM EDT | Severe Thunderstorm Warning | ILM | 56 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 16, 2:26 PM EDT | Coastal Flood Advisory | ILM | 10 hr |
| May 27, 6:24 PM EDT | Mesoscale Discussion | SPC | 66 min |
| Jun 3, 5:54 PM EDT | Mesoscale Discussion | SPC | 2 hr |
| Jun 14, 2:10 AM EDT | Severe Thunderstorm Warning | ILM | 65 min |
| Jun 14, 5:40 AM EDT | Special Weather Statement | ILM | 65 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 19, 1:29 PM EDT | Mesoscale Discussion | SPC | 61 min |
| Jun 19, 2:22 PM EDT | Severe Thunderstorm Watch | SPC | 5 hr |
| Jun 19, 3:43 PM EDT | Special Weather Statement | ILM | 47 min |
| Jun 19, 4:13 PM EDT | Mesoscale Discussion | SPC | 62 min |
| Jun 19, 5:05 PM EDT | Special Weather Statement | ILM | 25 min |
| Jun 20, 3:29 AM EDT | Heat Advisory | ILM | 17 hr |
| Jun 21, 3:16 AM EDT | Heat Advisory | ILM | 14 hr |
| Jun 22, 3:33 AM EDT | Heat Advisory | ILM | 15 hr |
| 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, 4:23 PM EDT | Severe Thunderstorm Warning | ILM | 67 min |
| Jun 23, 5:20 PM EDT | Severe Thunderstorm Warning | ILM | 55 min |
| Jun 23, 5:29 PM EDT | Severe Thunderstorm Warning | ILM | 50 min |
| Jun 27, 1:15 PM EDT | Mesoscale Discussion | SPC | 60 min |
| Jun 29, 7:07 PM EDT | Special Weather Statement | ILM | 23 min |
| Jul 1, 3:29 AM EDT | Dense Fog Advisory | ILM | 6 hr |
| Jul 1, 2:22 PM EDT | Special Weather Statement | CHS | 23 min |
| Jul 1, 2:27 PM EDT | Severe Thunderstorm Warning | ILM | 18 min |
| Jul 1, 2:28 PM EDT | Special Weather Statement | ILM | 47 min |
| Jul 1, 2:40 PM EDT | Severe Thunderstorm Warning | ILM | 65 min |
| Jul 2, 2:55 PM EDT | Severe Thunderstorm Warning | ILM | 50 min |
| Jul 5, 3:30 PM EDT | Special Weather Statement | ILM | 60 min |
| Jul 6, 12:53 PM EDT | Mesoscale Discussion | SPC | 97 min |
| Jul 9, 1:18 PM EDT | Mesoscale Discussion | SPC | 87 min |
| Jul 9, 2:54 PM EDT | Special Weather Statement | ILM | 51 min |
| Jul 9, 4:10 PM EDT | Special Weather Statement | ILM | 50 min |
| Jul 9, 5:00 PM EDT | Areal Flood Warning | ILM | 3 hr |
| Jul 11, 6:10 AM EDT | Dense Fog Advisory | ILM | 3 hr |
| Jul 11, 3:33 PM EDT | Heat Advisory | ILM | 29 hr |
| Jul 12, 3:40 PM EDT | Heat Advisory | ILM | 28 hr |
| Jul 13, 3:52 PM EDT | Special Weather Statement | ILM | 53 min |
| Jul 13, 4:06 PM EDT | Severe Thunderstorm Warning | ILM | 54 min |
| Jul 13, 8:51 PM EDT | Special Weather Statement | ILM | 54 min |
| Jul 13, 9:33 PM EDT | Special Weather Statement | ILM | 57 min |
| Jul 15, 6:34 PM EDT | Coastal Flood Advisory | ILM | 5 hr |
| Jul 20, 3:28 AM EDT | Heat Advisory | ILM | 17 hr |
| Jul 20, 3:00 PM EDT | Heat Advisory | ILM | 29 hr |
| Jul 21, 3:22 PM EDT | Excessive Heat Warning | ILM | 29 hr |
| Jul 22, 3:09 PM EDT | Excessive Heat Warning | ILM | 29 hr |
| Jul 23, 3:18 PM EDT | Excessive Heat Warning | ILM | 27 hr |
| Jul 24, 3:09 PM EDT | Special Weather Statement | ILM | 51 min |
| Jul 24, 3:10 PM EDT | Heat Advisory | ILM | 3 hr |
| Jul 24, 3:42 PM EDT | Special Weather Statement | CHS | 33 min |
| Jul 24, 3:44 PM EDT | Special Weather Statement | CHS | 31 min |
| Jul 25, 3:48 AM EDT | Heat Advisory | ILM | 13 hr |
| Jul 25, 10:40 AM EDT | Areal Flood Advisory | ILM | 42 min |
| Jul 25, 11:00 AM EDT | Areal Flood Warning | ILM | 3 hr |
| Jul 28, 3:10 PM EDT | Heat Advisory | ILM | 29 hr |
| Jul 29, 3:37 PM EDT | Heat Advisory | ILM | 28 hr |
| Jul 31, 2:15 AM EDT | Heat Advisory | ILM | 14 hr |
| Jul 31, 1:22 PM EDT | Mesoscale Discussion | SPC | 83 min |
| Jul 31, 2:19 PM EDT | Special Weather Statement | ILM | 56 min |
| Jul 31, 3:58 PM EDT | Areal Flood Advisory | ILM | 2 hr |
| Aug 3, 3:15 AM EDT | Heat Advisory | ILM | 17 hr |
| Aug 3, 3:19 PM EDT | Heat Advisory | ILM | 29 hr |
| Aug 4, 2:59 PM EDT | Heat Advisory | ILM | 29 hr |
| Aug 4, 8:30 PM EDT | Special Weather Statement | ILM | 60 min |
| Aug 5, 3:25 PM EDT | Special Weather Statement | ILM | 95 min |
| Aug 6, 3:37 AM EDT | Heat Advisory | ILM | 15 hr |
| Aug 6, 2:22 PM EDT | Special Weather Statement | ILM | 53 min |
| Aug 6, 3:47 PM EDT | Areal Flood Advisory | ILM | 118 min |
| Aug 7, 3:18 AM EDT | Heat Advisory | ILM | 17 hr |
| Aug 7, 2:52 PM EDT | Heat Advisory | ILM | 29 hr |
| Aug 8, 3:16 PM EDT | Heat Advisory | ILM | 28 hr |
| Aug 11, 2:53 PM EDT | Special Weather Statement | ILM | 52 min |
| Aug 11, 3:04 PM EDT | Special Weather Statement | CHS | 41 min |
| Aug 12, 12:17 PM EDT | Special Weather Statement | ILM | 58 min |
| Aug 12, 12:59 PM EDT | Areal Flood Advisory | ILM | 2 hr |
| Aug 12, 1:46 PM EDT | Mesoscale Discussion | SPC | 2 hr |
| Aug 13, 7:40 AM EDT | Areal Flood Advisory | ILM | 80 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, 6:29 PM EDT | Special Weather Statement | ILM | 61 min |
| Aug 20, 7:00 PM EDT | Tropical Storm Warning | NHC | 8 days |
| Aug 22, 2:02 PM EDT | Mesoscale Discussion | SPC | 58 min |
| Aug 22, 2:45 PM EDT | Special Weather Statement | ILM | 60 min |
| Aug 22, 5:54 PM EDT | Severe Thunderstorm Warning | ILM | 36 min |
| Aug 24, 3:59 PM EDT | Rip Current Statement | ILM | 28 hr |
| Aug 25, 5:00 AM EDT | Tropical Storm Watch | NHC | 54 hr |
| Aug 25, 5:09 AM EDT | Tropical Storm Watch | ILM | 12 hr |
| Aug 25, 3:29 PM EDT | Flash Flood Watch | ILM | 48 hr |
| Aug 25, 5:15 PM EDT | Tropical Storm Warning | ILM | 47 hr |
| Aug 26, 1:49 PM EDT | Flash Flood Warning | ILM | 111 min |
| Aug 26, 5:11 PM EDT | Areal Flood Warning | ILM | 2 hr |
| Aug 29, 5:37 AM EDT | Dense Fog Advisory | ILM | 2 hr |
| Aug 29, 11:08 AM EDT | Mesoscale Discussion | SPC | 97 min |
| Aug 29, 2:13 PM EDT | Mesoscale Discussion | SPC | 2 hr |
| Aug 29, 2:31 PM EDT | Special Weather Statement | ILM | 29 min |
| Aug 29, 3:56 PM EDT | Severe Thunderstorm Watch | SPC | 7 hr |
| Aug 29, 7:53 PM EDT | Mesoscale Discussion | SPC | 67 min |
| Sep 4, 9:44 PM EDT | Rip Current Statement | ILM | 4 days |
| Sep 5, 5:48 PM EDT | Mesoscale Discussion | SPC | 87 min |
| Sep 6, 5:17 AM EDT | Tornado Watch | SPC | 9 hr |
| Sep 6, 11:20 AM EDT | Special Weather Statement | ILM | 55 min |
| Sep 6, 11:51 AM EDT | Special Weather Statement | CHS | 39 min |
| Sep 6, 12:41 PM EDT | Mesoscale Discussion | SPC | 64 min |
| Sep 6, 1:32 PM EDT | Tornado Watch | SPC | 7 hr |
| Sep 6, 4:41 PM EDT | Mesoscale Discussion | SPC | 64 min |
| Sep 6, 7:33 PM EDT | Mesoscale Discussion | SPC | 117 min |
| Sep 12, 2:31 PM EDT | Mesoscale Discussion | SPC | 89 min |
| Sep 13, 3:37 PM EDT | Special Weather Statement | ILM | 23 min |
| Sep 14, 2:29 PM EDT | Special Weather Statement | CHS | 31 min |
| Sep 21, 1:30 PM EDT | Special Weather Statement | ILM | 60 min |
| Sep 26, 2:29 PM EDT | Special Weather Statement | ILM | 61 min |
| Sep 28, 4:12 PM EDT | Special Weather Statement | CHS | 48 min |
| Sep 28, 8:18 PM EDT | Special Weather Statement | CHS | 27 min |
| Sep 28, 9:00 PM EDT | Special Weather Statement | ILM | 60 min |
| Sep 29, 3:14 AM EDT | Special Weather Statement | CHS | 46 min |
| Sep 29, 3:28 AM EDT | Special Weather Statement | ILM | 47 min |
| Sep 30, 5:32 PM EDT | Mesoscale Discussion | SPC | 88 min |
| Sep 30, 8:05 PM EDT | Special Weather Statement | CHS | 25 min |
| Sep 30, 8:33 PM EDT | Special Weather Statement | CHS | 12 min |
| Oct 8, 3:46 PM EDT | Rip Current Statement | ILM | 3 days |
| Oct 10, 4:56 AM EDT | High Surf Advisory | ILM | 29 hr |
| Oct 10, 3:47 PM EDT | Coastal Flood Advisory | ILM | 6 hr |
| Oct 12, 4:34 AM EDT | Dense Fog Advisory | ILM | 5 hr |
| Oct 13, 9:53 PM EDT | Severe Thunderstorm Warning | ILM | 67 min |
| Oct 13, 10:55 PM EDT | Special Weather Statement | ILM | 65 min |
| Oct 18, 5:46 AM EDT | Dense Fog Advisory | ILM | 3 hr |
| Oct 19, 3:46 PM EDT | Mesoscale Discussion | SPC | 89 min |
| Nov 10, 3:20 PM EST | Freeze Watch | ILM | 11 hr |
| Nov 11, 2:16 AM EST | Frost Advisory | ILM | 31 hr |
| Nov 11, 2:16 AM EST | Freeze Warning | ILM | 31 hr |
| Nov 16, 4:06 PM EST | Mesoscale Discussion | SPC | 114 min |
| Nov 16, 4:30 PM EST | Tornado Watch | SPC | 7 hr |
| Nov 16, 8:27 PM EST | Severe Thunderstorm Warning | ILM | 63 min |
| Nov 16, 10:20 PM EST | Mesoscale Discussion | SPC | 55 min |
| Nov 16, 10:24 PM EST | Special Weather Statement | ILM | 36 min |
| Nov 16, 10:32 PM EST | Severe Thunderstorm Warning | ILM | 28 min |
| Dec 6, 12:12 AM EST | Dense Fog Advisory | ILM | 9 hr |
| Dec 7, 5:06 PM EST | Special Weather Statement | ILM | 39 min |
| Dec 27, 4:05 AM EST | Wind Advisory | ILM | 14 hr |
| Dec 27, 12:05 PM EST | Mesoscale Discussion | SPC | 55 min |
| Dec 27, 1:14 PM EST | Special Weather Statement | ILM | 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 | 26 |
| Tornado Warning | 4 |
| Severe Thunderstorm Watch | 9 |
| Tornado Watch | 7 |
| Mesoscale Discussion | 42 |
| Special Weather Statement | 49 |
| Flooding | |
| Areal Flood Warning | 3 |
| Flash Flood Warning | 1 |
| Flash Flood Watch | 1 |
| Areal Flood Advisory | 5 |
| Heat | |
| Excessive Heat Warning | 3 |
| Heat Advisory | 19 |
| Cold | |
| Freeze Warning | 1 |
| Freeze Watch | 1 |
| Frost Advisory | 1 |
| Wind and dust | |
| Wind Advisory | 1 |
| Fog and smoke | |
| Dense Fog Advisory | 7 |
| Tropical | |
| Tropical Storm Warning | 2 |
| Tropical Storm Watch | 2 |
| Coast and beach | |
| Coastal Flood Advisory | 3 |
| High Surf Advisory | 1 |
| Rip Current Statement | 3 |
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.