Alert archive / South Carolina / Sumter County
Weather alerts in Sumter County, South Carolina, 2014
135 weather alerts in 2014, from the National Weather Service and the Storm Prediction Center. An alert counts here when it covered this county.
Sumter County and its neighbors
Each county as a circle sized by its count in 2014. Tap one for its archive.
- Alerts
- 135
- Warnings
- 21
- Watches
- 11
- Advisories
- 57
- Busiest month
- January21 alerts
- Busiest day
- January 11, 20146 alerts
Over time
By month
Warning verification
How often warnings here had a storm report inside them, and how much warning the reports had.
Sumter County, 2014
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| Tornado warnings | 0 | 0 | ||||
| Severe thunderstorm warnings | 15 | 11 | 27% | 6 | 100% | 23 min |
| Flash flood warnings | 0 | 0 |
Each office's whole area, 2014
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| NWS Columbia, SC: tornado warnings | 2 | 2 | 0% | 3 | 67% | 4 min |
| NWS Columbia, SC: severe thunderstorm warnings | 124 | 98 | 21% | 192 | 92% | 23 min |
| NWS Columbia, SC: flash flood warnings | 18 | 12 | 33% | 27 | 85% | 30 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 2, 10:35 AM EST | Lake Wind Advisory | CAE | 25 hr |
| Jan 5, 2:39 PM EST | Lake Wind Advisory | CAE | 40 hr |
| Jan 6, 3:08 AM EST | Wind Chill Advisory | CAE | 31 hr |
| Jan 10, 3:27 PM EST | Special Weather Statement | CAE | 78 min |
| Jan 10, 4:46 PM EST | Areal Flood Advisory | CAE | 59 min |
| Jan 11, 12:14 AM EST | Dense Fog Advisory | CAE | 8 hr |
| Jan 11, 11:12 AM EST | Mesoscale Discussion | SPC | 63 min |
| Jan 11, 11:50 AM EST | Tornado Watch | SPC | 6 hr |
| Jan 11, 2:01 PM EST | Special Weather Statement | CAE | 59 min |
| Jan 11, 2:04 PM EST | Mesoscale Discussion | SPC | 56 min |
| Jan 11, 2:15 PM EST | Severe Thunderstorm Warning | CAE | 45 min |
| Jan 15, 1:51 AM EST | Dense Fog Advisory | CAE | 6 hr |
| Jan 18, 4:13 AM EST | Lake Wind Advisory | CAE | 10 hr |
| Jan 21, 3:44 AM EST | Lake Wind Advisory | CAE | 27 hr |
| Jan 24, 3:10 PM EST | Fire Weather Watch | CAE | 12 hr |
| Jan 24, 10:13 PM EST | Lake Wind Advisory | CAE | 22 hr |
| Jan 25, 3:37 AM EST | Red Flag Warning | CAE | 14 hr |
| Jan 26, 2:43 PM EST | Winter Storm Watch | CAE | 23 hr |
| Jan 27, 1:57 PM EST | Winter Storm Warning | CAE | 43 hr |
| Jan 28, 4:45 PM EST | Mesoscale Discussion | SPC | 5 hr |
| Jan 28, 10:43 PM EST | Mesoscale Discussion | SPC | 6 hr |
| Feb 1, 9:54 PM EST | Dense Fog Advisory | CAE | 13 hr |
| Feb 9, 6:53 AM EST | Dense Fog Advisory | CAE | 2 hr |
| Feb 10, 5:36 AM EST | Winter Storm Watch | CAE | 9 hr |
| Feb 10, 3:02 PM EST | Winter Storm Warning | CAE | 69 hr |
| Feb 11, 3:10 PM EST | Mesoscale Discussion | SPC | 5 hr |
| Feb 12, 2:43 AM EST | Mesoscale Discussion | SPC | 6 hr |
| Feb 12, 8:44 AM EST | Mesoscale Discussion | SPC | 5 hr |
| Feb 12, 3:20 PM EST | Mesoscale Discussion | SPC | 5 hr |
| Feb 12, 7:40 PM EST | Mesoscale Discussion | SPC | 6 hr |
| Feb 14, 2:36 PM EST | Lake Wind Advisory | CAE | 26 hr |
| Feb 21, 6:39 AM EST | Severe Thunderstorm Watch | SPC | 9 hr |
| Feb 21, 8:17 AM EST | Mesoscale Discussion | SPC | 118 min |
| Feb 21, 9:31 AM EST | Special Weather Statement | CAE | 59 min |
| Feb 21, 9:33 AM EST | Special Weather Statement | CAE | 57 min |
| Feb 21, 10:30 AM EST | Special Weather Statement | CAE | 60 min |
| Feb 21, 12:43 PM EST | Mesoscale Discussion | SPC | 62 min |
| Mar 6, 5:23 AM EST | Lake Wind Advisory | CAE | 24 hr |
| Mar 12, 3:44 AM EDT | Lake Wind Advisory | CAE | 17 hr |
| Mar 12, 9:08 PM EDT | Wind Advisory | CAE | 5 hr |
| Mar 23, 4:15 AM EDT | Dense Fog Advisory | CAE | 4 hr |
| Mar 25, 3:32 AM EDT | Freeze Warning | CAE | 29 hr |
| Mar 25, 3:32 AM EDT | Lake Wind Advisory | CAE | 27 hr |
| Mar 26, 11:52 AM EDT | Freeze Warning | CAE | 21 hr |
| Mar 29, 1:30 PM EDT | Mesoscale Discussion | SPC | 3 hr |
| Mar 29, 2:49 PM EDT | Lake Wind Advisory | CAE | 12 hr |
| Mar 30, 2:41 AM EDT | Frost Advisory | CAE | 29 hr |
| Mar 30, 2:41 AM EDT | Wind Advisory | CAE | 11 hr |
| Mar 30, 1:16 PM EDT | Lake Wind Advisory | CAE | 6 hr |
| Apr 15, 3:06 AM EDT | Lake Wind Advisory | CAE | 17 hr |
| Apr 19, 4:36 PM EDT | Lake Wind Advisory | CAE | 17 hr |
| Apr 30, 10:06 AM EDT | Lake Wind Advisory | CAE | 48 min |
| Apr 30, 10:54 AM EDT | Lake Wind Advisory | CAE | 5 hr |
| Apr 30, 10:54 AM EDT | Wind Advisory | CAE | 3 hr |
| May 12, 6:20 AM EDT | Dense Fog Advisory | CAE | 3 hr |
| May 15, 6:51 AM EDT | Areal Flood Advisory | CAE | 114 min |
| May 15, 8:29 AM EDT | Mesoscale Discussion | SPC | 2 hr |
| May 15, 8:48 AM EDT | Areal Flood Advisory | CAE | 117 min |
| May 15, 3:15 PM EDT | Areal Flood Advisory | CAE | 3 hr |
| May 15, 6:36 PM EDT | Severe Thunderstorm Warning | CAE | 39 min |
| May 15, 6:55 PM EDT | Mesoscale Discussion | SPC | 2 hr |
| May 23, 11:46 AM EDT | Mesoscale Discussion | SPC | 2 hr |
| May 23, 1:07 PM EDT | Severe Thunderstorm Watch | SPC | 10 hr |
| May 23, 2:27 PM EDT | Mesoscale Discussion | SPC | 93 min |
| May 23, 4:14 PM EDT | Mesoscale Discussion | SPC | 91 min |
| May 23, 7:08 PM EDT | Mesoscale Discussion | SPC | 97 min |
| May 23, 7:35 PM EDT | Severe Thunderstorm Warning | CAE | 40 min |
| May 23, 8:13 PM EDT | Severe Thunderstorm Warning | CAE | 47 min |
| May 23, 8:51 PM EDT | Severe Thunderstorm Warning | CAE | 54 min |
| May 23, 8:56 PM EDT | Severe Thunderstorm Warning | CAE | 64 min |
| May 23, 8:57 PM EDT | Mesoscale Discussion | SPC | 63 min |
| May 23, 10:20 PM EDT | Severe Thunderstorm Warning | CAE | 40 min |
| May 29, 8:28 PM EDT | Severe Thunderstorm Warning | CAE | 47 min |
| May 29, 8:49 PM EDT | Areal Flood Advisory | CAE | 56 min |
| Jun 6, 1:09 PM EDT | Mesoscale Discussion | SPC | 3 hr |
| Jun 7, 12:42 PM EDT | Mesoscale Discussion | SPC | 3 hr |
| Jun 8, 2:50 PM EDT | Areal Flood Advisory | CAE | 115 min |
| Jun 8, 7:07 PM EDT | Special Weather Statement | CAE | 53 min |
| Jun 9, 2:43 PM EDT | Mesoscale Discussion | SPC | 3 hr |
| Jun 9, 4:34 PM EDT | Severe Thunderstorm Watch | SPC | 6 hr |
| Jun 9, 7:44 PM EDT | Mesoscale Discussion | SPC | 2 hr |
| Jun 9, 8:37 PM EDT | Special Weather Statement | CAE | 23 min |
| Jun 11, 2:25 PM EDT | Mesoscale Discussion | SPC | 95 min |
| Jun 13, 9:03 PM EDT | Special Weather Statement | CAE | 42 min |
| Jun 21, 1:32 PM EDT | Special Weather Statement | CAE | 28 min |
| Jun 21, 1:33 PM EDT | Mesoscale Discussion | SPC | 117 min |
| Jun 21, 5:48 PM EDT | Severe Thunderstorm Warning | CAE | 42 min |
| Jun 21, 6:26 PM EDT | Severe Thunderstorm Warning | CAE | 49 min |
| Jun 21, 7:15 PM EDT | Severe Thunderstorm Warning | CAE | 45 min |
| Jun 27, 2:54 PM EDT | Mesoscale Discussion | SPC | 2 hr |
| Jun 28, 6:33 PM EDT | Special Weather Statement | CAE | 57 min |
| Jun 30, 7:33 PM EDT | Areal Flood Advisory | CAE | 57 min |
| Jul 10, 10:15 PM EDT | Areal Flood Advisory | CAE | 2 hr |
| Jul 12, 7:32 AM EDT | Dense Fog Advisory | CAE | 88 min |
| Jul 15, 12:30 PM EDT | Mesoscale Discussion | SPC | 90 min |
| Jul 15, 12:33 PM EDT | Special Weather Statement | CAE | 57 min |
| Jul 15, 1:24 PM EDT | Severe Thunderstorm Warning | CAE | 51 min |
| Jul 15, 4:30 PM EDT | Severe Thunderstorm Warning | CAE | 45 min |
| Jul 21, 5:31 PM EDT | Areal Flood Advisory | CAE | 59 min |
| Aug 4, 5:17 AM EDT | Dense Fog Advisory | CAE | 4 hr |
| Aug 8, 6:16 PM EDT | Mesoscale Discussion | SPC | 2 hr |
| Aug 9, 10:36 AM EDT | Areal Flood Advisory | CAE | 84 min |
| Aug 9, 7:48 PM EDT | Areal Flood Advisory | CAE | 87 min |
| Aug 10, 3:49 AM EDT | Flood Watch | CAE | 16 hr |
| Aug 18, 3:27 PM EDT | Severe Thunderstorm Warning | CAE | 48 min |
| Sep 7, 4:13 PM EDT | Areal Flood Advisory | CAE | 2 hr |
| Sep 8, 7:41 AM EDT | Areal Flood Advisory | CAE | 79 min |
| Sep 8, 8:57 AM EDT | Areal Flood Advisory | CAE | 63 min |
| Sep 12, 2:00 PM EDT | Special Weather Statement | CAE | 60 min |
| Sep 12, 2:54 PM EDT | Special Weather Statement | CAE | 51 min |
| Sep 12, 3:58 PM EDT | Areal Flood Advisory | CAE | 92 min |
| Sep 13, 5:04 PM EDT | Areal Flood Advisory | CAE | 116 min |
| Sep 14, 1:10 AM EDT | Areal Flood Advisory | CAE | 2 hr |
| Sep 14, 2:25 AM EDT | Areal Flood Advisory | CAE | 110 min |
| Sep 16, 5:29 PM EDT | Mesoscale Discussion | SPC | 2 hr |
| Sep 18, 7:43 AM EDT | Dense Fog Advisory | CAE | 2 hr |
| Oct 3, 5:39 AM EDT | Dense Fog Advisory | CAE | 3 hr |
| Oct 3, 5:15 PM EDT | Mesoscale Discussion | SPC | 60 min |
| Oct 3, 5:45 PM EDT | Areal Flood Advisory | CAE | 60 min |
| Oct 14, 6:57 AM EDT | Tornado Watch | SPC | 7 hr |
| Oct 14, 1:59 PM EDT | Tornado Watch | SPC | 11 hr |
| Oct 28, 12:55 AM EDT | Dense Fog Advisory | CAE | 9 hr |
| Oct 31, 4:20 AM EDT | Lake Wind Advisory | CAE | 53 hr |
| Nov 1, 1:21 PM EDT | Freeze Warning | CAE | 44 hr |
| Nov 17, 2:29 AM EST | Dense Fog Advisory | CAE | 7 hr |
| Nov 17, 8:43 AM EST | Mesoscale Discussion | SPC | 92 min |
| Nov 17, 10:57 AM EST | Tornado Watch | SPC | 4 hr |
| Nov 23, 8:32 PM EST | Special Weather Statement | CAE | 58 min |
| Nov 23, 8:44 PM EST | Severe Thunderstorm Warning | CAE | 31 min |
| Dec 3, 4:58 AM EST | Dense Fog Advisory | CAE | 7 hr |
| Dec 4, 12:54 AM EST | Dense Fog Advisory | CAE | 10 hr |
| Dec 23, 12:18 PM EST | Dense Fog Advisory | CAE | 2 hr |
| Dec 24, 7:42 AM EST | Areal Flood Advisory | CAE | 3 hr |
| Dec 24, 10:54 AM EST | Areal Flood Advisory | CAE | 3 hr |
| Dec 24, 11:30 PM EST | Special Weather Statement | CAE | 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 | 15 |
| Severe Thunderstorm Watch | 3 |
| Tornado Watch | 4 |
| Mesoscale Discussion | 31 |
| Special Weather Statement | 15 |
| Flooding | |
| Flood Watch | 1 |
| Areal Flood Advisory | 21 |
| Winter | |
| Winter Storm Warning | 2 |
| Winter Storm Watch | 2 |
| Cold | |
| Freeze Warning | 3 |
| Frost Advisory | 1 |
| Wind Chill Advisory | 1 |
| Wind and dust | |
| Lake Wind Advisory | 16 |
| Wind Advisory | 3 |
| Fire | |
| Red Flag Warning | 1 |
| Fire Weather Watch | 1 |
| Fog and smoke | |
| Dense Fog Advisory | 15 |
The busiest days
Days with the most alerts issued, by UTC date.
Nearby
Alerts in force nowTornadoes on recordForecastThe radar archive20132015
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.