Alert archive / South Carolina / Calhoun County
Weather alerts in Calhoun County, South Carolina, 2016
142 weather alerts in 2016, from the National Weather Service and the Storm Prediction Center. An alert counts here when it covered this county.
Calhoun County and its neighbors
Each county as a circle sized by its count in 2016. Tap one for its archive.
- Alerts
- 142
- Warnings
- 43
- Watches
- 11
- Advisories
- 41
- Busiest month
- July31 alerts
- Busiest day
- April 7, 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.
Calhoun County, 2016
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| Tornado warnings | 0 | 0 | ||||
| Severe thunderstorm warnings | 26 | 22 | 15% | 6 | 83% | 23 min |
| Flash flood warnings | 6 | 5 | 17% | 3 | 100% | 124 min |
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 15, 3:57 PM EST | Special Weather Statement | CAE | 63 min |
| Jan 15, 5:05 PM EST | Special Weather Statement | CAE | 85 min |
| Jan 17, 9:12 AM EST | River Flood Warning | CAE | 3 days |
| Jan 22, 5:41 PM EST | Winter Weather Advisory | CAE | 19 hr |
| Feb 3, 2:27 PM EST | Severe Thunderstorm Warning | CAE | 63 min |
| Feb 3, 4:26 PM EST | Severe Thunderstorm Warning | CAE | 42 min |
| Feb 4, 4:02 PM EST | Lake Wind Advisory | CAE | 18 hr |
| Feb 4, 9:22 PM EST | River Flood Warning | CAE | 4 days |
| Feb 6, 4:18 AM EST | Lake Wind Advisory | CAE | 38 hr |
| Feb 9, 2:11 AM EST | Lake Wind Advisory | CAE | 43 hr |
| Feb 22, 12:37 PM EST | Areal Flood Advisory | CAE | 113 min |
| Feb 23, 12:39 PM EST | Wind Advisory | CAE | 39 hr |
| Feb 24, 11:16 AM EST | Tornado Watch | SPC | 8 hr |
| Feb 24, 2:55 PM EST | Mesoscale Discussion | SPC | 95 min |
| Feb 25, 3:33 AM EST | River Flood Warning | CAE | 4 days |
| Feb 25, 3:55 AM EST | Lake Wind Advisory | CAE | 18 hr |
| Mar 1, 11:40 PM EST | Mesoscale Discussion | SPC | 65 min |
| Mar 21, 4:12 AM EDT | Frost Advisory | CAE | 29 hr |
| Apr 1, 7:26 AM EDT | Tornado Watch | SPC | 12 hr |
| Apr 1, 11:40 AM EDT | Mesoscale Discussion | SPC | 2 hr |
| Apr 1, 3:45 PM EDT | Severe Thunderstorm Warning | CAE | 60 min |
| Apr 2, 3:17 AM EDT | Lake Wind Advisory | CAE | 27 hr |
| Apr 5, 3:27 AM EDT | Frost Advisory | CAE | 29 hr |
| Apr 5, 3:43 AM EDT | Lake Wind Advisory | CAE | 7 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, 3:39 AM EDT | Special Weather Statement | CAE | 21 min |
| Apr 7, 4:05 AM EDT | Special Weather Statement | CAE | 25 min |
| Apr 7, 4:22 AM EDT | Mesoscale Discussion | SPC | 2 hr |
| Apr 7, 4:36 AM EDT | Special Weather Statement | CAE | 39 min |
| 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 |
| Apr 22, 5:22 PM EDT | Special Weather Statement | CAE | 23 min |
| Apr 22, 7:02 PM EDT | Special Weather Statement | CAE | 43 min |
| Apr 30, 4:09 AM EDT | Dense Fog Advisory | CAE | 5 hr |
| May 1, 1:53 PM EDT | Special Weather Statement | CAE | 67 min |
| May 2, 2:23 PM EDT | Mesoscale Discussion | SPC | 67 min |
| May 3, 3:17 AM EDT | Special Weather Statement | CAE | 28 min |
| May 3, 2:52 PM EDT | Severe Thunderstorm Watch | SPC | 8 hr |
| May 13, 1:36 PM EDT | Special Weather Statement | CAE | 39 min |
| May 31, 7:22 PM EDT | Special Weather Statement | CAE | 53 min |
| Jun 3, 5:01 PM EDT | Special Weather Statement | CAE | 59 min |
| Jun 5, 7:11 PM EDT | Special Weather Statement | CAE | 64 min |
| Jun 5, 7:43 PM EDT | Areal Flood Advisory | CAE | 3 hr |
| 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, 2:41 PM EDT | Severe Thunderstorm Warning | CAE | 49 min |
| Jun 14, 3:07 PM EDT | Severe Thunderstorm Warning | CAE | 38 min |
| Jun 14, 3:30 PM EDT | Severe Thunderstorm Warning | CAE | 60 min |
| Jun 14, 3:51 PM EDT | Flash Flood Warning | CAE | 114 min |
| Jun 14, 4:13 PM EDT | Severe Thunderstorm Warning | CAE | 47 min |
| Jun 15, 12:41 AM EDT | Special Weather Statement | CAE | 79 min |
| Jun 15, 1:40 PM EDT | Mesoscale Discussion | SPC | 95 min |
| Jun 15, 2:23 PM EDT | Severe Thunderstorm Warning | CAE | 52 min |
| Jun 15, 3:34 PM EDT | Special Weather Statement | CAE | 41 min |
| Jun 16, 3:44 PM EDT | Severe Thunderstorm Warning | CAE | 46 min |
| Jun 16, 6:04 PM EDT | Special Weather Statement | CAE | 41 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, 2:07 PM EDT | Severe Thunderstorm Warning | CAE | 38 min |
| Jun 17, 2:43 PM EDT | Severe Thunderstorm Warning | CAE | 62 min |
| Jun 17, 2:45 PM EDT | Severe Thunderstorm Warning | CAE | 30 min |
| Jun 24, 3:00 PM EDT | Mesoscale Discussion | SPC | 2 hr |
| Jun 24, 5:25 PM EDT | Severe Thunderstorm Warning | CAE | 80 min |
| Jun 28, 3:36 PM EDT | Areal Flood Advisory | CAE | 114 min |
| Jul 3, 1:36 PM EDT | Mesoscale Discussion | SPC | 2 hr |
| Jul 5, 5:05 PM EDT | Severe Thunderstorm Warning | CAE | 55 min |
| Jul 5, 5:45 PM EDT | Severe Thunderstorm Warning | CAE | 75 min |
| Jul 5, 6:20 PM EDT | Severe Thunderstorm Warning | CAE | 55 min |
| Jul 6, 1:53 PM EDT | Severe Thunderstorm Watch | SPC | 4 hr |
| Jul 6, 3:01 PM EDT | Mesoscale Discussion | SPC | 59 min |
| Jul 6, 3:21 PM EDT | Severe Thunderstorm Warning | CAE | 54 min |
| Jul 6, 4:09 PM EDT | Special Weather Statement | CAE | 51 min |
| Jul 6, 4:15 PM EDT | Severe Thunderstorm Warning | CAE | 60 min |
| Jul 7, 4:14 PM EDT | Severe Thunderstorm Watch | SPC | 7 hr |
| Jul 7, 7:24 PM EDT | Mesoscale Discussion | SPC | 66 min |
| Jul 7, 10:42 PM EDT | Severe Thunderstorm Warning | CAE | 48 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, 11:52 PM EDT | Mesoscale Discussion | SPC | 53 min |
| Jul 9, 12:15 AM EDT | Severe Thunderstorm Warning | CAE | 45 min |
| Jul 9, 10:37 AM EDT | Heat Advisory | CAE | 8 hr |
| Jul 10, 2:40 PM EDT | Severe Thunderstorm Warning | CAE | 50 min |
| Jul 14, 12:20 PM EDT | Severe Thunderstorm Warning | CAE | 25 min |
| Jul 14, 1:07 PM EDT | Special Weather Statement | CAE | 53 min |
| Jul 15, 1:28 PM EDT | Mesoscale Discussion | SPC | 2 hr |
| Jul 15, 1:55 PM EDT | Special Weather Statement | CAE | 65 min |
| Jul 15, 2:59 PM EDT | Severe Thunderstorm Warning | CAE | 31 min |
| Jul 15, 9:48 PM EDT | Special Weather Statement | CAE | 42 min |
| Jul 15, 10:24 PM EDT | Special Weather Statement | CAE | 66 min |
| Jul 16, 9:56 PM EDT | Areal Flood Advisory | CAE | 2 hr |
| Jul 21, 1:09 PM EDT | Special Weather Statement | CAE | 51 min |
| Jul 21, 1:26 PM EDT | Severe Thunderstorm Warning | CAE | 64 min |
| Jul 31, 2:24 PM EDT | Special Weather Statement | CAE | 36 min |
| Jul 31, 2:33 PM EDT | Severe Thunderstorm Warning | CAE | 42 min |
| Jul 31, 3:18 PM EDT | Special Weather Statement | CAE | 57 min |
| Aug 1, 8:41 PM EDT | Severe Thunderstorm Warning | CAE | 64 min |
| Aug 2, 9:08 PM EDT | Special Weather Statement | CAE | 52 min |
| Aug 6, 2:49 PM EDT | Special Weather Statement | CAE | 56 min |
| Aug 10, 2:13 PM EDT | Areal Flood Advisory | CAE | 2 hr |
| Aug 15, 4:42 PM EDT | Special Weather Statement | CAE | 63 min |
| Aug 18, 2:59 PM EDT | Special Weather Statement | CAE | 46 min |
| Sep 1, 3:26 AM EDT | Flash Flood Watch | CAE | 41 hr |
| Sep 1, 9:43 AM EDT | High Wind Watch | CAE | 11 hr |
| Sep 1, 9:05 PM EDT | High Wind Warning | CAE | 25 hr |
| Sep 2, 11:56 AM EDT | Flash Flood Warning | CAE | 4 hr |
| Sep 2, 12:55 PM EDT | Mesoscale Discussion | SPC | 2 hr |
| Sep 2, 1:24 PM EDT | Areal Flood Advisory | CAE | 111 min |
| Sep 2, 3:07 PM EDT | Flash Flood Warning | CAE | 3 hr |
| Sep 2, 5:49 PM EDT | Flash Flood Warning | CAE | 3 hr |
| Sep 2, 8:43 PM EDT | Areal Flood Warning | CAE | 9 hr |
| Sep 19, 9:36 PM EDT | Special Weather Statement | CAE | 24 min |
| Oct 6, 2:39 PM EDT | Wind Advisory | CAE | 57 hr |
| Oct 6, 2:47 PM EDT | Flash Flood Watch | CAE | 53 hr |
| Oct 7, 12:00 PM EDT | High Wind Warning | CAE | 25 hr |
| Oct 8, 12:27 AM EDT | Areal Flood Advisory | CAE | 6 hr |
| Oct 8, 2:56 AM EDT | Flash Flood Warning | CAE | 6 hr |
| Oct 8, 3:09 AM EDT | Areal Flood Advisory | CAE | 4 hr |
| Oct 8, 8:10 AM EDT | Areal Flood Warning | CAE | 3 hr |
| Oct 8, 8:19 AM EDT | Flash Flood Warning | CAE | 6 hr |
| Oct 8, 11:11 AM EDT | Areal Flood Warning | CAE | 2 hr |
| Oct 21, 3:28 AM EDT | Lake Wind Advisory | CAE | 29 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 | Lake Wind Advisory | CAE | 26 hr |
| Nov 19, 3:27 AM EST | Red Flag Warning | CAE | 15 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, 5:43 PM EST | Mesoscale Discussion | SPC | 92 min |
| Dec 12, 9:02 PM EST | Dense Fog Advisory | CAE | 7 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, 9:15 AM EST | Special Weather Statement | CAE | 45 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 |
| Severe Thunderstorm Watch | 4 |
| Tornado Watch | 2 |
| Mesoscale Discussion | 17 |
| Special Weather Statement | 30 |
| Flooding | |
| Areal Flood Warning | 3 |
| Flash Flood Warning | 6 |
| River Flood Warning | 3 |
| Flash Flood Watch | 3 |
| Areal Flood Advisory | 8 |
| Winter | |
| Winter Weather Advisory | 1 |
| Heat | |
| Heat Advisory | 2 |
| Cold | |
| Freeze Warning | 2 |
| Freeze Watch | 1 |
| Frost Advisory | 2 |
| Wind and dust | |
| High Wind Warning | 2 |
| High Wind Watch | 1 |
| Lake Wind Advisory | 19 |
| Wind Advisory | 3 |
| Fire | |
| Red Flag Warning | 1 |
| Fog and smoke | |
| Dense Fog Advisory | 5 |
| 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.