Alert archive / South Carolina / McCormick County
Weather alerts in McCormick County, South Carolina, 2016
96 weather alerts in 2016, from the National Weather Service and the Storm Prediction Center. An alert counts here when it covered this county.
McCormick County and its neighbors
Each county as a circle sized by its count in 2016. Tap one for its archive.
- Alerts
- 96
- Warnings
- 22
- Watches
- 7
- Advisories
- 33
- Busiest month
- July23 alerts
- Busiest day
- July 6, 20166 alerts
Over time
By month
Warning verification
How often warnings here had a storm report inside them, and how much warning the reports had.
McCormick County, 2016
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| Tornado warnings | 0 | 0 | ||||
| Severe thunderstorm warnings | 15 | 8 | 47% | 3 | 67% | 19 min |
| Flash flood warnings | 0 | 0 |
Each office's whole area, 2016
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| NWS Columbia, SC: tornado warnings | 6 | 1 | 83% | 2 | 50% | 13 min |
| NWS Columbia, SC: severe thunderstorm warnings | 192 | 163 | 15% | 324 | 87% | 21 min |
| NWS Columbia, SC: flash flood warnings | 14 | 12 | 14% | 45 | 96% | 71 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 4, 2:38 AM EST | Lake Wind Advisory | CAE | 31 hr |
| Jan 10, 2:34 AM EST | Lake Wind Advisory | CAE | 21 hr |
| Jan 12, 2:19 AM EST | Lake Wind Advisory | CAE | 20 hr |
| Jan 22, 5:41 PM EST | Winter Weather Advisory | CAE | 19 hr |
| Feb 2, 6:51 AM EST | Dense Fog Advisory | CAE | 3 hr |
| Feb 3, 11:08 AM EST | Special Weather Statement | CAE | 52 min |
| Feb 3, 12:48 PM EST | Severe Thunderstorm Warning | CAE | 42 min |
| Feb 9, 2:11 AM EST | Lake Wind Advisory | CAE | 43 hr |
| Feb 23, 12:39 PM EST | Wind Advisory | CAE | 39 hr |
| Feb 24, 9:39 AM EST | Special Weather Statement | CAE | 36 min |
| Feb 25, 3:55 AM EST | Lake Wind Advisory | CAE | 18 hr |
| Mar 1, 9:42 PM EST | Mesoscale Discussion | SPC | 63 min |
| Mar 1, 10:10 PM EST | Special Weather Statement | CAE | 50 min |
| Mar 21, 4:12 AM EDT | Frost Advisory | CAE | 29 hr |
| Mar 31, 5:21 PM EDT | Special Weather Statement | CAE | 24 min |
| Apr 1, 1:31 AM EDT | Mesoscale Discussion | SPC | 89 min |
| Apr 1, 9:44 PM EDT | River Flood Warning | CAE | 36 hr |
| Apr 2, 3:17 AM EDT | Lake Wind Advisory | CAE | 27 hr |
| Apr 5, 3:27 AM EDT | Frost Advisory | CAE | 29 hr |
| Apr 6, 6:31 PM EDT | Lake Wind Advisory | CAE | 7 hr |
| Apr 7, 1:49 AM EDT | Wind Advisory | CAE | 8 hr |
| Apr 7, 9:54 AM EDT | Lake Wind Advisory | CAE | 10 hr |
| Apr 8, 4:03 AM EDT | Freeze Watch | CAE | 24 hr |
| Apr 8, 4:03 AM EDT | Lake Wind Advisory | CAE | 16 hr |
| Apr 9, 4:06 AM EDT | Freeze Warning | CAE | 29 hr |
| Apr 9, 4:06 AM EDT | Lake Wind Advisory | CAE | 15 hr |
| May 2, 2:23 PM EDT | Mesoscale Discussion | SPC | 67 min |
| May 2, 11:20 PM EDT | Severe Thunderstorm Warning | CAE | 40 min |
| May 3, 3:07 PM EDT | Mesoscale Discussion | SPC | 83 min |
| May 19, 12:38 PM EDT | Areal Flood Advisory | CAE | 3 hr |
| May 21, 2:20 PM EDT | Mesoscale Discussion | SPC | 2 hr |
| Jun 2, 11:48 PM EDT | Severe Thunderstorm Warning | CAE | 35 min |
| Jun 4, 2:34 PM EDT | Special Weather Statement | CAE | 41 min |
| Jun 5, 1:47 PM EDT | Mesoscale Discussion | SPC | 118 min |
| Jun 6, 3:11 PM EDT | Flash Flood Watch | CAE | 13 hr |
| Jun 14, 1:30 PM EDT | Mesoscale Discussion | SPC | 90 min |
| Jun 14, 2:40 PM EDT | Areal Flood Advisory | CAE | 110 min |
| Jun 17, 12:59 PM EDT | Mesoscale Discussion | SPC | 2 hr |
| Jun 17, 1:52 PM EDT | Severe Thunderstorm Watch | SPC | 8 hr |
| Jun 17, 3:01 PM EDT | Severe Thunderstorm Warning | CAE | 29 min |
| Jun 17, 5:56 PM EDT | Severe Thunderstorm Warning | CAE | 34 min |
| Jun 24, 3:00 PM EDT | Mesoscale Discussion | SPC | 2 hr |
| Jun 28, 12:06 AM EDT | Areal Flood Advisory | CAE | 3 hr |
| Jul 5, 1:45 PM EDT | Mesoscale Discussion | SPC | 3 hr |
| Jul 5, 3:09 PM EDT | Special Weather Statement | CAE | 51 min |
| Jul 5, 4:25 PM EDT | Special Weather Statement | CAE | 50 min |
| Jul 5, 5:13 PM EDT | Severe Thunderstorm Warning | CAE | 62 min |
| Jul 6, 1:14 PM EDT | Mesoscale Discussion | SPC | 61 min |
| Jul 6, 1:40 PM EDT | Severe Thunderstorm Warning | CAE | 65 min |
| Jul 6, 1:53 PM EDT | Severe Thunderstorm Watch | SPC | 4 hr |
| Jul 6, 2:12 PM EDT | Severe Thunderstorm Warning | CAE | 33 min |
| Jul 6, 3:01 PM EDT | Mesoscale Discussion | SPC | 59 min |
| Jul 6, 3:05 PM EDT | Severe Thunderstorm Warning | CAE | 40 min |
| Jul 8, 12:43 PM EDT | Heat Advisory | CAE | 6 hr |
| Jul 8, 9:53 PM EDT | Mesoscale Discussion | SPC | 37 min |
| Jul 8, 11:00 PM EDT | Special Weather Statement | CAE | 60 min |
| Jul 8, 11:11 PM EDT | Severe Thunderstorm Warning | CAE | 49 min |
| Jul 10, 6:04 PM EDT | Special Weather Statement | CAE | 26 min |
| Jul 10, 6:27 PM EDT | Severe Thunderstorm Warning | CAE | 25 min |
| Jul 17, 7:39 PM EDT | Special Weather Statement | CAE | 51 min |
| Jul 17, 7:47 PM EDT | Severe Thunderstorm Warning | CAE | 43 min |
| Jul 19, 4:59 PM EDT | Severe Thunderstorm Warning | CAE | 31 min |
| Jul 20, 9:54 PM EDT | Severe Thunderstorm Warning | CAE | 33 min |
| Jul 21, 2:17 PM EDT | Special Weather Statement | CAE | 43 min |
| Jul 21, 2:17 PM EDT | Mesoscale Discussion | SPC | 88 min |
| Jul 23, 12:13 PM EDT | Mesoscale Discussion | SPC | 3 hr |
| Aug 2, 4:39 PM EDT | Special Weather Statement | CAE | 66 min |
| Aug 13, 11:32 PM EDT | Special Weather Statement | CAE | 58 min |
| Aug 15, 7:53 PM EDT | Special Weather Statement | GSP | 37 min |
| Aug 15, 8:00 PM EDT | Special Weather Statement | CAE | 45 min |
| Sep 1, 3:26 AM EDT | Flash Flood Watch | CAE | 41 hr |
| Sep 2, 3:54 AM EDT | Wind Advisory | CAE | 17 hr |
| Sep 28, 2:01 AM EDT | Areal Flood Warning | CAE | 3 hr |
| Sep 28, 3:58 PM EDT | River Flood Warning | CAE | 31 hr |
| Oct 21, 3:28 AM EDT | Lake Wind Advisory | CAE | 29 hr |
| Nov 2, 4:40 AM EDT | Dense Fog Advisory | CAE | 6 hr |
| Nov 9, 2:29 PM EST | Lake Wind Advisory | CAE | 10 hr |
| Nov 11, 2:27 PM EST | Lake Wind Advisory | CAE | 22 hr |
| Nov 19, 3:13 AM EST | Freeze Watch | CAE | 11 hr |
| Nov 19, 3:13 AM EST | Lake Wind Advisory | CAE | 26 hr |
| Nov 19, 3:27 AM EST | Red Flag Warning | CAE | 15 hr |
| Nov 19, 2:36 PM EST | Freeze Warning | CAE | 18 hr |
| Nov 20, 2:51 AM EST | Freeze Warning | CAE | 30 hr |
| Nov 29, 3:58 AM EST | Lake Wind Advisory | CAE | 13 hr |
| Nov 30, 2:55 PM EST | Mesoscale Discussion | SPC | 2 hr |
| Nov 30, 3:23 PM EST | Severe Thunderstorm Watch | SPC | 3 hr |
| Nov 30, 5:21 PM EST | Special Weather Statement | CAE | 39 min |
| Nov 30, 5:36 PM EST | Severe Thunderstorm Warning | CAE | 39 min |
| Nov 30, 5:43 PM EST | Mesoscale Discussion | SPC | 92 min |
| Dec 7, 3:58 AM EST | Dense Fog Advisory | CAE | 6 hr |
| Dec 13, 5:11 PM EST | Dense Fog Advisory | CAE | 12 hr |
| Dec 21, 3:35 AM EST | Freezing Fog Advisory | CAE | 5 hr |
| Dec 21, 8:40 AM EST | Dense Fog Advisory | CAE | 3 hr |
| Dec 27, 8:00 AM EST | Dense Fog Advisory | CAE | 2 hr |
| Dec 29, 2:44 AM EST | Lake Wind Advisory | CAE | 37 hr |
| Dec 29, 6:11 AM EST | Special Weather Statement | CAE | 49 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 | 15 |
| Severe Thunderstorm Watch | 3 |
| Mesoscale Discussion | 17 |
| Special Weather Statement | 17 |
| Flooding | |
| Areal Flood Warning | 1 |
| River Flood Warning | 2 |
| Flash Flood Watch | 2 |
| Areal Flood Advisory | 3 |
| Winter | |
| Winter Weather Advisory | 1 |
| Heat | |
| Heat Advisory | 1 |
| Cold | |
| Freeze Warning | 3 |
| Freeze Watch | 2 |
| Frost Advisory | 2 |
| Wind and dust | |
| Lake Wind Advisory | 16 |
| Wind Advisory | 3 |
| Fire | |
| Red Flag Warning | 1 |
| Fog and smoke | |
| Dense Fog Advisory | 6 |
| Freezing Fog Advisory | 1 |
The busiest days
Days with the most alerts issued, by UTC date.
Nearby
Alerts in force nowTornadoes on recordForecastThe radar archive20152017
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.