Alert archive / South Carolina / Oconee County
Weather alerts in Oconee County, South Carolina, 2018
145 weather alerts in 2018, from the National Weather Service and the Storm Prediction Center. An alert counts here when it covered this county.
Oconee County and its neighbors
Each county as a circle sized by its count in 2018. Tap one for its archive.
- Alerts
- 145
- Warnings
- 50
- Watches
- 4
- Advisories
- 23
- Busiest month
- June55 alerts
- Busiest day
- May 31, 20189 alerts
Over time
By month
Warning verification
How often warnings here had a storm report inside them, and how much warning the reports had.
Oconee County, 2018
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| Tornado warnings | 0 | 0 | ||||
| Severe thunderstorm warnings | 48 | 34 | 29% | 26 | 96% | 18 min |
| Flash flood warnings | 0 | 1 | 0% |
Each office's whole area, 2018
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| NWS Greenville-Spartanburg, SC: tornado warnings | 7 | 1 | 86% | 3 | 67% | 5 min |
| NWS Greenville-Spartanburg, SC: severe thunderstorm warnings | 347 | 244 | 30% | 600 | 87% | 20 min |
| NWS Greenville-Spartanburg, SC: flash flood warnings | 74 | 53 | 28% | 177 | 83% | 159 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 11, 11:48 PM EST | Areal Flood Advisory | GSP | 6 hr |
| Feb 11, 1:49 AM EST | Special Weather Statement | GSP | 41 min |
| Feb 11, 5:38 PM EST | Areal Flood Advisory | GSP | 112 min |
| Mar 17, 9:20 PM EDT | Severe Thunderstorm Warning | GSP | 40 min |
| Mar 17, 10:02 PM EDT | Severe Thunderstorm Warning | GSP | 43 min |
| Mar 17, 10:12 PM EDT | Severe Thunderstorm Warning | GSP | 48 min |
| Mar 20, 4:00 PM EDT | Special Weather Statement | GSP | 30 min |
| Apr 4, 3:43 AM EDT | Special Weather Statement | GSP | 47 min |
| Apr 26, 9:25 PM EDT | Special Weather Statement | GSP | 35 min |
| Apr 26, 9:57 PM EDT | Severe Thunderstorm Warning | GSP | 32 min |
| May 8, 2:01 AM EDT | Special Weather Statement | GSP | 59 min |
| May 10, 1:37 PM EDT | Special Weather Statement | GSP | 23 min |
| May 10, 3:46 PM EDT | Special Weather Statement | GSP | 29 min |
| May 10, 4:36 PM EDT | Special Weather Statement | GSP | 39 min |
| May 10, 5:34 PM EDT | Special Weather Statement | GSP | 41 min |
| May 16, 6:21 AM EDT | Areal Flood Advisory | GSP | 3 hr |
| May 16, 8:50 AM EDT | Areal Flood Advisory | GSP | 4 hr |
| May 16, 9:21 AM EDT | Areal Flood Advisory | GSP | 3 hr |
| May 16, 11:30 AM EDT | Areal Flood Warning | GSP | 9 hr |
| May 16, 9:55 PM EDT | Areal Flood Advisory | GSP | 3 hr |
| May 18, 5:05 AM EDT | Areal Flood Advisory | GSP | 6 hr |
| May 18, 6:41 PM EDT | Special Weather Statement | GSP | 49 min |
| May 19, 3:37 PM EDT | Special Weather Statement | GSP | 38 min |
| May 19, 4:03 PM EDT | Areal Flood Advisory | GSP | 117 min |
| May 20, 2:13 PM EDT | Severe Thunderstorm Warning | GSP | 47 min |
| May 28, 11:30 PM EDT | Special Weather Statement | GSP | 45 min |
| May 29, 12:13 AM EDT | Special Weather Statement | GSP | 47 min |
| May 30, 9:56 AM EDT | Areal Flood Advisory | GSP | 18 hr |
| May 31, 6:34 AM EDT | Areal Flood Advisory | GSP | 6 hr |
| May 31, 12:19 PM EDT | Areal Flood Advisory | GSP | 20 hr |
| May 31, 2:50 PM EDT | Severe Thunderstorm Warning | GSP | 40 min |
| May 31, 3:30 PM EDT | Severe Thunderstorm Warning | GSP | 45 min |
| May 31, 3:33 PM EDT | Areal Flood Advisory | GSP | 117 min |
| May 31, 3:39 PM EDT | Special Weather Statement | GSP | 66 min |
| May 31, 3:45 PM EDT | Severe Thunderstorm Warning | GSP | 45 min |
| May 31, 5:02 PM EDT | Severe Thunderstorm Warning | GSP | 43 min |
| May 31, 5:42 PM EDT | Severe Thunderstorm Warning | GSP | 48 min |
| Jun 1, 10:43 AM EDT | Areal Flood Advisory | GSP | 24 hr |
| Jun 1, 5:11 PM EDT | Severe Thunderstorm Warning | GSP | 20 min |
| Jun 2, 10:40 AM EDT | Areal Flood Advisory | GSP | 7 days |
| Jun 2, 4:14 PM EDT | Special Weather Statement | GSP | 31 min |
| Jun 2, 4:19 PM EDT | Severe Thunderstorm Warning | GSP | 41 min |
| Jun 3, 3:10 PM EDT | Special Weather Statement | GSP | 35 min |
| Jun 3, 3:24 PM EDT | Mesoscale Discussion | SPC | 66 min |
| Jun 3, 3:31 PM EDT | Special Weather Statement | GSP | 29 min |
| Jun 3, 3:34 PM EDT | Severe Thunderstorm Warning | GSP | 41 min |
| Jun 3, 4:10 PM EDT | Severe Thunderstorm Warning | GSP | 50 min |
| Jun 3, 4:37 PM EDT | Severe Thunderstorm Warning | GSP | 39 min |
| Jun 3, 5:47 PM EDT | Special Weather Statement | GSP | 28 min |
| Jun 3, 6:19 PM EDT | Special Weather Statement | GSP | 26 min |
| Jun 8, 9:37 PM EDT | Special Weather Statement | GSP | 38 min |
| Jun 8, 10:43 PM EDT | Special Weather Statement | GSP | 32 min |
| Jun 9, 3:15 PM EDT | Special Weather Statement | GSP | 45 min |
| Jun 10, 3:48 PM EDT | Special Weather Statement | GSP | 27 min |
| Jun 14, 4:08 PM EDT | Severe Thunderstorm Warning | GSP | 52 min |
| Jun 14, 4:55 PM EDT | Special Weather Statement | GSP | 35 min |
| Jun 14, 5:27 PM EDT | Special Weather Statement | GSP | 33 min |
| Jun 14, 6:02 PM EDT | Special Weather Statement | GSP | 28 min |
| Jun 14, 6:07 PM EDT | Severe Thunderstorm Warning | GSP | 38 min |
| Jun 16, 2:17 PM EDT | Severe Thunderstorm Warning | GSP | 43 min |
| Jun 16, 2:59 PM EDT | Special Weather Statement | GSP | 31 min |
| Jun 16, 3:32 PM EDT | Special Weather Statement | GSP | 28 min |
| Jun 17, 8:04 PM EDT | Special Weather Statement | GSP | 26 min |
| Jun 19, 3:03 PM EDT | Special Weather Statement | GSP | 27 min |
| Jun 21, 3:29 PM EDT | Mesoscale Discussion | SPC | 91 min |
| Jun 21, 5:18 PM EDT | Special Weather Statement | GSP | 27 min |
| Jun 23, 3:43 PM EDT | Severe Thunderstorm Warning | GSP | 62 min |
| Jun 23, 4:22 PM EDT | Severe Thunderstorm Warning | GSP | 53 min |
| Jun 24, 4:00 PM EDT | Special Weather Statement | GSP | 30 min |
| Jun 24, 4:11 PM EDT | Severe Thunderstorm Warning | GSP | 49 min |
| Jun 24, 4:36 PM EDT | Severe Thunderstorm Warning | GSP | 39 min |
| Jun 24, 5:53 PM EDT | Mesoscale Discussion | SPC | 97 min |
| Jun 25, 12:29 PM EDT | Mesoscale Discussion | SPC | 61 min |
| Jun 25, 1:02 PM EDT | Severe Thunderstorm Watch | SPC | 9 hr |
| Jun 25, 4:34 PM EDT | Severe Thunderstorm Warning | GSP | 41 min |
| Jun 25, 5:13 PM EDT | Severe Thunderstorm Warning | GSP | 47 min |
| Jun 25, 5:59 PM EDT | Severe Thunderstorm Warning | GSP | 46 min |
| Jun 26, 2:21 PM EDT | Special Weather Statement | GSP | 24 min |
| Jun 26, 2:25 PM EDT | Severe Thunderstorm Warning | GSP | 50 min |
| Jun 26, 3:16 PM EDT | Severe Thunderstorm Warning | GSP | 44 min |
| Jun 26, 3:59 PM EDT | Special Weather Statement | GSP | 31 min |
| Jun 26, 4:00 PM EDT | Special Weather Statement | GSP | 30 min |
| Jun 26, 7:31 PM EDT | Special Weather Statement | GSP | 44 min |
| Jun 26, 8:05 PM EDT | Special Weather Statement | GSP | 25 min |
| Jun 26, 8:22 PM EDT | Special Weather Statement | GSP | 38 min |
| Jun 26, 8:54 PM EDT | Special Weather Statement | GSP | 66 min |
| Jun 27, 2:29 PM EDT | Mesoscale Discussion | SPC | 3 hr |
| Jun 27, 3:03 PM EDT | Severe Thunderstorm Warning | GSP | 42 min |
| Jun 27, 3:26 PM EDT | Severe Thunderstorm Warning | GSP | 49 min |
| Jun 27, 3:36 PM EDT | Severe Thunderstorm Watch | SPC | 5 hr |
| Jun 27, 3:43 PM EDT | Severe Thunderstorm Warning | GSP | 47 min |
| Jun 28, 8:49 AM EDT | Special Weather Statement | GSP | 41 min |
| Jun 30, 8:29 PM EDT | Special Weather Statement | GSP | 31 min |
| Jul 6, 1:21 PM EDT | Severe Thunderstorm Warning | GSP | 39 min |
| Jul 11, 5:54 PM EDT | Special Weather Statement | GSP | 36 min |
| Jul 11, 7:13 PM EDT | Special Weather Statement | GSP | 32 min |
| Jul 11, 7:47 PM EDT | Special Weather Statement | GSP | 28 min |
| Jul 12, 1:42 PM EDT | Mesoscale Discussion | SPC | 3 hr |
| Jul 14, 10:56 AM EDT | Areal Flood Advisory | GSP | 112 min |
| Jul 21, 3:37 PM EDT | Mesoscale Discussion | SPC | 2 hr |
| Jul 21, 5:42 PM EDT | Severe Thunderstorm Watch | SPC | 8 hr |
| Jul 21, 6:26 PM EDT | Severe Thunderstorm Warning | GSP | 49 min |
| Jul 21, 7:24 PM EDT | Mesoscale Discussion | SPC | 96 min |
| Jul 21, 7:52 PM EDT | Severe Thunderstorm Warning | GSP | 38 min |
| Jul 21, 8:27 PM EDT | Severe Thunderstorm Warning | GSP | 48 min |
| Jul 21, 9:08 PM EDT | Special Weather Statement | GSP | 37 min |
| Jul 21, 9:22 PM EDT | Severe Thunderstorm Warning | GSP | 38 min |
| Jul 21, 9:28 PM EDT | Mesoscale Discussion | SPC | 92 min |
| Aug 2, 9:00 AM EDT | Areal Flood Advisory | GSP | 2 hr |
| Aug 2, 1:18 PM EDT | Special Weather Statement | GSP | 42 min |
| Aug 3, 8:01 PM EDT | Special Weather Statement | GSP | 44 min |
| Aug 3, 9:15 PM EDT | Areal Flood Advisory | GSP | 2 hr |
| Aug 5, 2:19 PM EDT | Special Weather Statement | GSP | 26 min |
| Aug 5, 2:45 PM EDT | Special Weather Statement | GSP | 30 min |
| Aug 6, 3:33 PM EDT | Severe Thunderstorm Warning | GSP | 42 min |
| Aug 6, 3:55 PM EDT | Severe Thunderstorm Warning | GSP | 50 min |
| Aug 6, 4:26 PM EDT | Special Weather Statement | GSP | 34 min |
| Aug 6, 4:51 PM EDT | Severe Thunderstorm Warning | GSP | 39 min |
| Aug 6, 5:29 PM EDT | Severe Thunderstorm Warning | GSP | 46 min |
| Aug 7, 5:11 PM EDT | Special Weather Statement | GSP | 34 min |
| Aug 7, 5:17 PM EDT | Severe Thunderstorm Warning | GSP | 43 min |
| Aug 7, 6:01 PM EDT | Severe Thunderstorm Warning | GSP | 44 min |
| Aug 8, 1:37 PM EDT | Severe Thunderstorm Warning | GSP | 38 min |
| Aug 8, 2:04 PM EDT | Special Weather Statement | GSP | 26 min |
| Aug 8, 2:17 PM EDT | Severe Thunderstorm Warning | GSP | 43 min |
| Aug 8, 5:36 PM EDT | Severe Thunderstorm Warning | GSP | 54 min |
| Aug 9, 6:43 PM EDT | Severe Thunderstorm Warning | GSP | 31 min |
| Aug 21, 3:53 PM EDT | Mesoscale Discussion | SPC | 2 hr |
| Sep 10, 2:54 PM EDT | Special Weather Statement | GSP | 36 min |
| Sep 10, 3:14 PM EDT | Severe Thunderstorm Warning | GSP | 29 min |
| Sep 10, 3:20 PM EDT | Special Weather Statement | GSP | 40 min |
| Sep 10, 3:47 PM EDT | Severe Thunderstorm Warning | GSP | 21 min |
| Sep 13, 6:08 PM EDT | Special Weather Statement | GSP | 37 min |
| Sep 27, 6:00 PM EDT | Severe Thunderstorm Warning | GSP | 60 min |
| Sep 27, 6:06 PM EDT | Severe Thunderstorm Watch | SPC | 4 hr |
| Oct 11, 2:42 AM EDT | Areal Flood Advisory | GSP | 6 hr |
| Oct 11, 3:45 AM EDT | Areal Flood Advisory | GSP | 6 hr |
| Nov 6, 7:05 AM EST | Special Weather Statement | GSP | 25 min |
| Nov 6, 7:31 AM EST | Special Weather Statement | GSP | 44 min |
| Nov 12, 4:54 PM EST | Areal Flood Advisory | GSP | 4 hr |
| Nov 12, 8:38 PM EST | Areal Flood Warning | GSP | 4 hr |
| Nov 13, 12:31 AM EST | Areal Flood Advisory | GSP | 4 hr |
| Dec 1, 7:46 PM EST | Special Weather Statement | GSP | 59 min |
| Dec 28, 5:59 AM EST | Areal Flood Advisory | GSP | 10 hr |
| Dec 28, 6:21 PM EST | Areal Flood Advisory | GSP | 39 hr |
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 | 48 |
| Severe Thunderstorm Watch | 4 |
| Mesoscale Discussion | 10 |
| Special Weather Statement | 58 |
| Flooding | |
| Areal Flood Warning | 2 |
| Areal Flood Advisory | 23 |
The busiest days
Days with the most alerts issued, by UTC date.
Nearby
Alerts in force nowTornadoes on recordForecastThe radar archive20172019
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.