Alert archive / South Carolina / Dillon County
Weather alerts in Dillon County, South Carolina, 2018
121 weather alerts in 2018, from the National Weather Service and the Storm Prediction Center. An alert counts here when it covered this county.
Dillon County and its neighbors
Each county as a circle sized by its count in 2018. Tap one for its archive.
- Alerts
- 121
- Warnings
- 37
- Watches
- 15
- Advisories
- 24
- Busiest month
- September33 alerts
- Busiest day
- September 16, 201815 alerts
Over time
By month
Warning verification
How often warnings here had a storm report inside them, and how much warning the reports had.
5 of 5 tornado warnings covering Dillon County in 2018 had a tornado report inside them; 3 of 3 tornado reports fell inside a warning, on average 12 minutes after it went out.
Dillon County, 2018
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| Tornado warnings | 5 | 5 | 0% | 3 | 100% | 12 min |
| Severe thunderstorm warnings | 8 | 7 | 13% | 4 | 75% | 14 min |
| Flash flood warnings | 7 | 7 | 0% | 1 | 0% |
Each office's whole area, 2018
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| NWS Wilmington, NC: tornado warnings | 37 | 14 | 62% | 22 | 73% | 12 min |
| NWS Wilmington, NC: severe thunderstorm warnings | 56 | 28 | 50% | 74 | 68% | 16 min |
| NWS Wilmington, NC: flash flood warnings | 30 | 19 | 37% | 199 | 90% | 391 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 1, 1:47 AM EST | Wind Chill Advisory | ILM | 32 hr |
| Jan 2, 3:13 AM EST | Winter Storm Watch | ILM | 12 hr |
| Jan 2, 3:20 PM EST | Winter Storm Warning | ILM | 36 hr |
| Jan 4, 3:03 AM EST | Wind Chill Advisory | ILM | 31 hr |
| Jan 5, 3:06 PM EST | Wind Chill Advisory | ILM | 18 hr |
| Jan 6, 3:07 PM EST | Wind Chill Advisory | ILM | 19 hr |
| Jan 12, 6:46 PM EST | Mesoscale Discussion | SPC | 2 hr |
| Jan 16, 2:42 PM EST | Winter Weather Advisory | ILM | 34 hr |
| Feb 10, 3:31 AM EST | Dense Fog Advisory | ILM | 9 hr |
| Feb 19, 9:18 PM EST | Dense Fog Advisory | ILM | 14 hr |
| Feb 21, 4:19 AM EST | Dense Fog Advisory | ILM | 5 hr |
| Feb 22, 2:45 AM EST | Dense Fog Advisory | ILM | 7 hr |
| Mar 1, 2:05 PM EST | Mesoscale Discussion | SPC | 2 hr |
| Mar 1, 2:59 PM EST | Wind Advisory | ILM | 27 hr |
| Mar 1, 4:48 PM EST | Special Weather Statement | ILM | 42 min |
| Mar 1, 5:04 PM EST | Severe Thunderstorm Warning | ILM | 56 min |
| Mar 8, 3:10 AM EST | Freeze Warning | ILM | 29 hr |
| Mar 12, 4:24 AM EDT | Freeze Watch | ILM | 11 hr |
| Mar 12, 3:18 PM EDT | Freeze Warning | ILM | 18 hr |
| Mar 13, 5:33 PM EDT | Freeze Warning | ILM | 10 hr |
| Mar 14, 3:13 AM EDT | Freeze Warning | ILM | 30 hr |
| Mar 14, 3:06 PM EDT | Fire Weather Watch | ILM | 11 hr |
| Mar 15, 2:27 AM EDT | Red Flag Warning | ILM | 17 hr |
| Mar 18, 3:39 AM EDT | Special Weather Statement | ILM | 51 min |
| Mar 20, 7:09 PM EDT | Special Weather Statement | ILM | 66 min |
| Mar 22, 3:02 PM EDT | Freeze Warning | ILM | 18 hr |
| Apr 15, 2:29 PM EDT | Mesoscale Discussion | SPC | 91 min |
| Apr 15, 3:02 PM EDT | Tornado Watch | SPC | 8 hr |
| Apr 15, 4:25 PM EDT | Special Weather Statement | ILM | 65 min |
| Apr 15, 4:47 PM EDT | Severe Thunderstorm Warning | ILM | 58 min |
| Apr 15, 5:45 PM EDT | Mesoscale Discussion | SPC | 90 min |
| Apr 15, 7:52 PM EDT | Severe Thunderstorm Warning | ILM | 53 min |
| Apr 15, 8:31 PM EDT | Mesoscale Discussion | SPC | 89 min |
| May 24, 4:28 AM EDT | Areal Flood Advisory | ILM | 3 hr |
| May 27, 7:47 AM EDT | Flash Flood Watch | ILM | 55 hr |
| Jun 4, 12:26 AM EDT | Special Weather Statement | ILM | 34 min |
| Jun 15, 2:18 PM EDT | Special Weather Statement | ILM | 27 min |
| Jun 15, 2:58 PM EDT | Mesoscale Discussion | SPC | 2 hr |
| Jun 18, 4:49 PM EDT | Special Weather Statement | ILM | 41 min |
| Jun 18, 4:54 PM EDT | Severe Thunderstorm Warning | ILM | 66 min |
| Jun 19, 3:22 AM EDT | Heat Advisory | ILM | 17 hr |
| Jun 19, 4:01 PM EDT | Heat Advisory | ILM | 28 hr |
| Jun 20, 2:10 PM EDT | Special Weather Statement | ILM | 50 min |
| Jun 20, 2:23 PM EDT | Severe Thunderstorm Warning | ILM | 22 min |
| Jun 20, 2:56 PM EDT | Special Weather Statement | ILM | 64 min |
| Jun 20, 3:45 PM EDT | Special Weather Statement | ILM | 60 min |
| Jun 23, 3:30 PM EDT | Heat Advisory | ILM | 29 hr |
| Jun 24, 8:43 PM EDT | Severe Thunderstorm Warning | ILM | 47 min |
| Jun 25, 1:02 PM EDT | Severe Thunderstorm Watch | SPC | 9 hr |
| Jun 25, 6:23 PM EDT | Mesoscale Discussion | SPC | 2 hr |
| Jun 29, 3:26 PM EDT | Special Weather Statement | ILM | 49 min |
| Jul 12, 1:42 PM EDT | Mesoscale Discussion | SPC | 3 hr |
| Jul 12, 4:32 PM EDT | Special Weather Statement | ILM | 58 min |
| Jul 23, 1:24 PM EDT | Mesoscale Discussion | SPC | 3 hr |
| Jul 26, 7:27 PM EDT | Areal Flood Advisory | ILM | 56 min |
| Jul 27, 6:17 PM EDT | Severe Thunderstorm Warning | ILM | 21 min |
| Jul 29, 2:31 PM EDT | Special Weather Statement | ILM | 59 min |
| Aug 2, 12:14 PM EDT | Areal Flood Advisory | ILM | 61 min |
| Aug 10, 4:00 PM EDT | Special Weather Statement | ILM | 60 min |
| Aug 11, 5:20 PM EDT | Special Weather Statement | ILM | 55 min |
| Aug 13, 1:34 AM EDT | Areal Flood Advisory | ILM | 116 min |
| Aug 17, 10:22 PM EDT | Special Weather Statement | ILM | 53 min |
| Aug 18, 2:45 PM EDT | Mesoscale Discussion | SPC | 3 hr |
| Sep 10, 6:32 PM EDT | Special Weather Statement | ILM | 58 min |
| Sep 11, 11:12 PM EDT | Tropical Storm Watch | ILM | 30 hr |
| Sep 12, 4:50 AM EDT | Flash Flood Watch | ILM | 5 days |
| Sep 12, 5:02 PM EDT | Tropical Storm Warning | ILM | 3 days |
| Sep 13, 11:42 PM EDT | River Flood Warning | ILM | 23 days |
| Sep 14, 8:28 PM EDT | Flash Flood Warning | ILM | 6 hr |
| Sep 15, 9:55 PM EDT | Flash Flood Warning | ILM | 8 hr |
| Sep 16, 5:23 AM EDT | Flash Flood Warning | ILM | 8 hr |
| Sep 16, 6:32 AM EDT | Mesoscale Discussion | SPC | 88 min |
| Sep 16, 6:37 AM EDT | Areal Flood Advisory | ILM | 3 hr |
| Sep 16, 6:55 AM EDT | Tornado Watch | SPC | 16 hr |
| Sep 16, 8:17 AM EDT | Flash Flood Warning | ILM | 8 hr |
| Sep 16, 11:22 AM EDT | Mesoscale Discussion | SPC | 113 min |
| Sep 16, 12:25 PM EDT | Tornado Warning | ILM | 35 min |
| Sep 16, 3:13 PM EDT | Special Weather Statement | ILM | 32 min |
| Sep 16, 3:15 PM EDT | Tornado Warning | ILM | 45 min |
| Sep 16, 3:26 PM EDT | Tornado Warning | ILM | 49 min |
| Sep 16, 3:42 PM EDT | Mesoscale Discussion | SPC | 93 min |
| Sep 16, 3:58 PM EDT | Tornado Warning | ILM | 47 min |
| Sep 16, 4:00 PM EDT | Flash Flood Warning | ILM | 8 hr |
| Sep 16, 5:58 PM EDT | Tornado Warning | ILM | 32 min |
| Sep 16, 8:55 PM EDT | Mesoscale Discussion | SPC | 2 hr |
| Sep 17, 12:31 AM EDT | Flash Flood Warning | ILM | 6 hr |
| Sep 17, 4:11 AM EDT | Mesoscale Discussion | SPC | 2 hr |
| Sep 17, 5:29 AM EDT | Flash Flood Warning | ILM | 5 hr |
| Sep 17, 10:25 AM EDT | Areal Flood Warning | ILM | 72 hr |
| Sep 20, 10:33 AM EDT | Areal Flood Warning | ILM | 43 hr |
| Sep 26, 5:23 PM EDT | Special Weather Statement | ILM | 52 min |
| Sep 26, 6:05 PM EDT | Special Weather Statement | ILM | 55 min |
| Sep 27, 2:20 PM EDT | Mesoscale Discussion | SPC | 2 hr |
| Sep 27, 5:47 PM EDT | Mesoscale Discussion | SPC | 88 min |
| Sep 27, 8:00 PM EDT | Special Weather Statement | ILM | 60 min |
| Sep 27, 10:36 PM EDT | Severe Thunderstorm Warning | ILM | 54 min |
| Oct 9, 4:55 PM EDT | Flash Flood Watch | ILM | 44 hr |
| Oct 9, 5:02 PM EDT | Tropical Storm Watch | ILM | 12 hr |
| Oct 10, 4:54 AM EDT | Tropical Storm Warning | ILM | 42 hr |
| Oct 10, 12:18 PM EDT | Areal Flood Advisory | ILM | 49 min |
| Oct 10, 4:50 PM EDT | Mesoscale Discussion | SPC | 2 hr |
| Oct 10, 11:38 PM EDT | Tornado Watch | SPC | 7 hr |
| Oct 11, 4:34 AM EDT | Mesoscale Discussion | SPC | 56 min |
| Oct 16, 6:28 PM EDT | Mesoscale Discussion | SPC | 3 hr |
| Nov 2, 3:47 PM EDT | Mesoscale Discussion | SPC | 118 min |
| Nov 7, 2:20 AM EST | Dense Fog Advisory | ILM | 5 hr |
| Nov 9, 3:15 PM EST | Freeze Watch | ILM | 18 hr |
| Nov 10, 9:14 AM EST | Freeze Warning | ILM | 24 hr |
| Nov 16, 2:57 PM EST | Frost Advisory | ILM | 17 hr |
| Nov 17, 9:15 AM EST | River Flood Warning | ILM | 15 days |
| Nov 22, 3:11 AM EST | Freeze Warning | ILM | 29 hr |
| Nov 26, 3:38 AM EST | Freeze Watch | ILM | 24 hr |
| Nov 27, 3:58 AM EST | Freeze Warning | ILM | 29 hr |
| Dec 9, 9:43 AM EST | River Flood Warning | ILM | 37 days |
| Dec 13, 3:55 AM EST | Flash Flood Watch | ILM | 53 hr |
| Dec 14, 11:57 AM EST | Areal Flood Advisory | ILM | 3 hr |
| Dec 21, 3:04 AM EST | Wind Advisory | ILM | 15 hr |
| Dec 21, 2:14 PM EST | Special Weather Statement | ILM | 61 min |
| Dec 21, 2:33 PM EST | Mesoscale Discussion | SPC | 57 min |
| Dec 28, 3:46 PM EST | Special Weather Statement | ILM | 44 min |
| Dec 31, 4:26 AM EST | Dense Fog Advisory | ILM | 5 hr |
By product
Every kind of product issued here, grouped by hazard. Each opens the same place narrowed to that product.
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.