Alert archive / South Carolina / Berkeley County
Weather alerts in Berkeley County, South Carolina, 2019
151 weather alerts in 2019, from the National Weather Service and the Storm Prediction Center. An alert counts here when it covered this county.
Berkeley County and its neighbors
Each county as a circle sized by its count in 2019. Tap one for its archive.
- Alerts
- 151
- Warnings
- 34
- Watches
- 15
- Advisories
- 54
- Busiest month
- June31 alerts
- Busiest day
- June 20, 20199 alerts
Over time
By month
Warning verification
How often warnings here had a storm report inside them, and how much warning the reports had.
0 of 3 tornado warnings covering Berkeley County in 2019 had a tornado report inside them.
Berkeley County, 2019
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| Tornado warnings | 3 | 0 | 100% | 0 | ||
| Severe thunderstorm warnings | 20 | 17 | 15% | 27 | 100% | 29 min |
| Flash flood warnings | 1 | 1 | 0% | 1 | 100% | 303 min |
Each office's whole area, 2019
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| NWS Charleston, SC: tornado warnings | 9 | 1 | 89% | 4 | 75% | 3 min |
| NWS Charleston, SC: severe thunderstorm warnings | 110 | 78 | 29% | 424 | 83% | 28 min |
| NWS Charleston, SC: flash flood warnings | 1 | 1 | 0% | 1 | 100% | 303 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, 5:30 PM EST | Dense Fog Advisory | CHS | 12 hr |
| Jan 4, 2:51 PM EST | Lake Wind Advisory | CHS | 22 hr |
| Jan 19, 3:19 AM EST | Lake Wind Advisory | CHS | 43 hr |
| Jan 23, 3:15 PM EST | Lake Wind Advisory | CHS | 24 hr |
| Feb 8, 2:53 PM EST | Lake Wind Advisory | CHS | 24 hr |
| Feb 11, 8:59 PM EST | Dense Fog Advisory | CHS | 15 hr |
| Feb 12, 7:35 PM EST | Special Weather Statement | CHS | 40 min |
| Feb 20, 10:08 PM EST | Dense Fog Advisory | CHS | 12 hr |
| Feb 24, 3:01 AM EST | Dense Fog Advisory | CHS | 6 hr |
| Feb 28, 2:53 AM EST | Dense Fog Advisory | CHS | 6 hr |
| Mar 3, 1:51 AM EST | Dense Fog Advisory | CHS | 8 hr |
| Mar 3, 3:19 PM EST | Mesoscale Discussion | SPC | 116 min |
| Mar 3, 3:35 PM EST | Tornado Watch | SPC | 7 hr |
| Mar 3, 6:14 PM EST | Special Weather Statement | CHS | 31 min |
| Mar 3, 6:15 PM EST | Mesoscale Discussion | SPC | 2 hr |
| Mar 3, 6:33 PM EST | Tornado Warning | CHS | 27 min |
| Mar 3, 7:01 PM EST | Special Weather Statement | CHS | 29 min |
| Mar 4, 12:05 AM EST | Lake Wind Advisory | CHS | 3 hr |
| Mar 4, 3:40 PM EST | Freeze Watch | CHS | 24 hr |
| Mar 5, 3:03 AM EST | Freeze Warning | CHS | 30 hr |
| Mar 6, 10:02 AM EST | Freeze Warning | CHS | 23 hr |
| Mar 15, 7:48 PM EDT | Special Weather Statement | CHS | 42 min |
| Mar 25, 9:29 PM EDT | Special Weather Statement | CHS | 46 min |
| Apr 1, 3:01 PM EDT | Lake Wind Advisory | CHS | 22 hr |
| Apr 8, 12:07 AM EDT | Dense Fog Advisory | CHS | 10 hr |
| Apr 9, 9:54 PM EDT | River Flood Warning | CHS | 22 days |
| Apr 13, 8:55 PM EDT | Lake Wind Advisory | CHS | 38 hr |
| Apr 14, 5:43 PM EDT | Mesoscale Discussion | SPC | 2 hr |
| Apr 14, 6:31 PM EDT | Tornado Watch | SPC | 3 hr |
| Apr 18, 4:04 PM EDT | Wind Advisory | CHS | 25 hr |
| Apr 19, 10:44 AM EDT | Tornado Watch | SPC | 5 hr |
| Apr 19, 1:40 PM EDT | Severe Thunderstorm Warning | CHS | 65 min |
| Apr 19, 2:27 PM EDT | Severe Thunderstorm Warning | CHS | 63 min |
| Apr 19, 2:36 PM EDT | Tornado Warning | CHS | 9 min |
| Apr 19, 2:39 PM EDT | Severe Thunderstorm Warning | CHS | 66 min |
| Apr 19, 3:17 PM EDT | Tornado Warning | CHS | 28 min |
| Apr 20, 9:59 AM EDT | Lake Wind Advisory | CHS | 10 hr |
| Apr 26, 3:28 AM EDT | Lake Wind Advisory | CHS | 19 hr |
| May 4, 3:08 PM EDT | Severe Thunderstorm Warning | CHS | 51 min |
| May 12, 11:50 AM EDT | Mesoscale Discussion | SPC | 85 min |
| May 12, 12:41 PM EDT | Severe Thunderstorm Watch | SPC | 6 hr |
| May 12, 12:49 PM EDT | Special Weather Statement | CHS | 26 min |
| May 12, 3:04 PM EDT | Mesoscale Discussion | SPC | 56 min |
| May 12, 4:23 PM EDT | Mesoscale Discussion | SPC | 2 hr |
| May 18, 5:07 PM EDT | Special Weather Statement | CHS | 38 min |
| May 26, 3:23 AM EDT | Heat Advisory | CHS | 16 hr |
| May 31, 5:11 PM EDT | Special Weather Statement | CHS | 49 min |
| Jun 4, 12:43 PM EDT | Mesoscale Discussion | SPC | 92 min |
| Jun 4, 1:18 PM EDT | Severe Thunderstorm Watch | SPC | 7 hr |
| Jun 4, 4:15 PM EDT | Mesoscale Discussion | SPC | 90 min |
| Jun 11, 9:16 AM EDT | River Flood Warning | CHS | 10 days |
| Jun 11, 3:04 PM EDT | Flash Flood Watch | CHS | 30 hr |
| Jun 12, 7:43 AM EDT | Areal Flood Advisory | CHS | 62 min |
| Jun 12, 9:39 AM EDT | Areal Flood Advisory | CHS | 81 min |
| Jun 12, 10:59 AM EDT | Areal Flood Advisory | CHS | 2 hr |
| Jun 12, 12:59 PM EDT | Areal Flood Advisory | CHS | 106 min |
| Jun 12, 2:51 PM EDT | Areal Flood Advisory | CHS | 114 min |
| Jun 19, 5:59 PM EDT | Special Weather Statement | CHS | 46 min |
| Jun 20, 12:02 PM EDT | Mesoscale Discussion | SPC | 118 min |
| Jun 20, 1:44 PM EDT | Severe Thunderstorm Watch | SPC | 8 hr |
| Jun 20, 4:47 PM EDT | Mesoscale Discussion | SPC | 88 min |
| Jun 20, 5:03 PM EDT | Severe Thunderstorm Warning | CHS | 57 min |
| Jun 20, 5:58 PM EDT | Severe Thunderstorm Warning | CHS | 62 min |
| Jun 20, 6:35 PM EDT | Severe Thunderstorm Warning | CHS | 55 min |
| Jun 20, 7:00 PM EDT | Special Weather Statement | CHS | 30 min |
| Jun 20, 7:16 PM EDT | Mesoscale Discussion | SPC | 89 min |
| Jun 20, 7:24 PM EDT | Severe Thunderstorm Warning | CHS | 66 min |
| Jun 22, 5:11 AM EDT | Severe Thunderstorm Warning | CHS | 64 min |
| Jun 22, 6:09 AM EDT | Severe Thunderstorm Warning | CHS | 66 min |
| Jun 22, 1:01 PM EDT | Mesoscale Discussion | SPC | 119 min |
| Jun 22, 2:08 PM EDT | Severe Thunderstorm Watch | SPC | 7 hr |
| Jun 22, 4:35 PM EDT | Mesoscale Discussion | SPC | 85 min |
| Jun 22, 6:25 PM EDT | Special Weather Statement | CHS | 35 min |
| Jun 22, 6:44 PM EDT | Severe Thunderstorm Warning | CHS | 61 min |
| Jun 22, 6:58 PM EDT | Mesoscale Discussion | SPC | 62 min |
| Jun 22, 7:24 PM EDT | Special Weather Statement | CHS | 36 min |
| Jun 24, 3:30 AM EDT | Heat Advisory | CHS | 12 hr |
| Jun 24, 11:44 PM EDT | Special Weather Statement | CHS | 46 min |
| Jul 3, 1:31 PM EDT | Mesoscale Discussion | SPC | 119 min |
| Jul 3, 6:09 PM EDT | Severe Thunderstorm Warning | CHS | 66 min |
| Jul 3, 7:03 PM EDT | Areal Flood Advisory | CHS | 87 min |
| Jul 3, 7:13 PM EDT | Severe Thunderstorm Warning | CHS | 62 min |
| Jul 3, 7:44 PM EDT | Areal Flood Advisory | CHS | 91 min |
| Jul 3, 8:20 PM EDT | Areal Flood Advisory | CHS | 85 min |
| Jul 4, 1:34 PM EDT | Mesoscale Discussion | SPC | 86 min |
| Jul 4, 2:29 PM EDT | Special Weather Statement | CHS | 46 min |
| Jul 4, 3:21 PM EDT | Special Weather Statement | CHS | 24 min |
| Jul 4, 3:31 PM EDT | Severe Thunderstorm Warning | CHS | 59 min |
| Jul 4, 3:54 PM EDT | Severe Thunderstorm Warning | CHS | 66 min |
| Jul 4, 4:29 PM EDT | Severe Thunderstorm Warning | CHS | 61 min |
| Jul 4, 5:32 PM EDT | Special Weather Statement | CHS | 43 min |
| Jul 5, 9:42 AM EDT | Special Weather Statement | CHS | 33 min |
| Jul 5, 9:49 AM EDT | Areal Flood Advisory | CHS | 86 min |
| Jul 5, 12:15 PM EDT | Special Weather Statement | CHS | 30 min |
| Jul 5, 12:17 PM EDT | Special Weather Statement | CHS | 28 min |
| Jul 5, 12:21 PM EDT | Severe Thunderstorm Warning | CHS | 54 min |
| Jul 5, 2:03 PM EDT | Areal Flood Advisory | CHS | 87 min |
| Jul 7, 5:02 PM EDT | Special Weather Statement | CHS | 28 min |
| Jul 12, 6:58 PM EDT | Areal Flood Advisory | CHS | 62 min |
| Jul 13, 5:41 PM EDT | Special Weather Statement | CHS | 49 min |
| Jul 13, 6:28 PM EDT | Special Weather Statement | CHS | 47 min |
| Jul 18, 6:50 PM EDT | Severe Thunderstorm Warning | CHS | 55 min |
| Jul 18, 7:47 PM EDT | Special Weather Statement | CHS | 43 min |
| Aug 14, 2:08 PM EDT | Special Weather Statement | CHS | 37 min |
| Aug 14, 2:10 PM EDT | Severe Thunderstorm Warning | CHS | 65 min |
| Aug 14, 2:34 PM EDT | Areal Flood Advisory | CHS | 56 min |
| Aug 14, 2:38 PM EDT | Mesoscale Discussion | SPC | 2 hr |
| Aug 14, 3:12 PM EDT | Severe Thunderstorm Warning | CHS | 63 min |
| Aug 14, 3:29 PM EDT | Areal Flood Advisory | CHS | 91 min |
| Aug 14, 4:51 PM EDT | Areal Flood Advisory | CHS | 84 min |
| Aug 15, 4:34 PM EDT | Mesoscale Discussion | SPC | 116 min |
| Aug 17, 10:22 AM EDT | Areal Flood Advisory | CHS | 83 min |
| Aug 17, 2:34 PM EDT | Areal Flood Advisory | CHS | 116 min |
| Aug 17, 4:25 PM EDT | Areal Flood Advisory | CHS | 2 hr |
| Aug 17, 4:52 PM EDT | Areal Flood Advisory | CHS | 83 min |
| Aug 24, 6:45 PM EDT | Special Weather Statement | CHS | 30 min |
| Sep 2, 5:04 PM EDT | Hurricane Watch | CHS | 61 hr |
| Sep 3, 11:03 AM EDT | Hurricane Warning | CHS | 57 hr |
| Sep 3, 11:14 AM EDT | Tropical Storm Warning | CHS | 64 hr |
| Sep 3, 3:34 PM EDT | Flash Flood Watch | CHS | 49 hr |
| Sep 4, 9:47 AM EDT | Special Weather Statement | CHS | 43 min |
| Sep 4, 11:09 AM EDT | Special Weather Statement | CHS | 51 min |
| Sep 4, 1:46 PM EDT | Areal Flood Advisory | CHS | 104 min |
| Sep 5, 4:27 AM EDT | Flash Flood Warning | CHS | 11 hr |
| Sep 5, 10:37 AM EDT | River Flood Warning | CHS | 5 hr |
| Sep 5, 10:55 PM EDT | Wind Advisory | CHS | 5 hr |
| Sep 6, 6:26 AM EDT | Areal Flood Advisory | CHS | 8 hr |
| Sep 13, 6:09 PM EDT | Special Weather Statement | CHS | 51 min |
| Oct 19, 3:24 AM EDT | Lake Wind Advisory | CHS | 23 hr |
| Oct 28, 2:27 AM EDT | Dense Fog Advisory | CHS | 5 hr |
| Oct 31, 6:34 PM EDT | Mesoscale Discussion | SPC | 56 min |
| Oct 31, 7:58 PM EDT | Mesoscale Discussion | SPC | 62 min |
| Nov 6, 12:54 AM EST | Dense Fog Advisory | CHS | 5 hr |
| Nov 8, 3:51 AM EST | Freeze Watch | CHS | 11 hr |
| Nov 9, 3:38 AM EST | Freeze Watch | CHS | 12 hr |
| Nov 9, 3:21 PM EST | Freeze Warning | CHS | 17 hr |
| Nov 11, 3:03 PM EST | Freeze Watch | CHS | 24 hr |
| Nov 11, 3:03 PM EST | Lake Wind Advisory | CHS | 46 hr |
| Nov 12, 4:09 AM EST | Freeze Warning | CHS | 30 hr |
| Nov 15, 10:22 AM EST | Lake Wind Advisory | CHS | 51 hr |
| Nov 23, 3:22 PM EST | Lake Wind Advisory | CHS | 16 hr |
| Dec 1, 2:51 AM EST | Lake Wind Advisory | CHS | 33 hr |
| Dec 9, 7:27 AM EST | Dense Fog Advisory | CHS | 3 hr |
| Dec 16, 6:17 AM EST | River Flood Warning | CHS | 100 days |
| Dec 17, 3:45 PM EST | Lake Wind Advisory | CHS | 18 hr |
| Dec 21, 3:42 PM EST | Flash Flood Watch | CHS | 65 hr |
| Dec 23, 1:55 AM EST | Areal Flood Advisory | CHS | 13 hr |
| Dec 23, 2:55 PM EST | Areal Flood Advisory | CHS | 3 hr |
| Dec 23, 5:44 PM EST | Areal Flood Advisory | CHS | 2 hr |
| Dec 23, 10:15 PM EST | Lake Wind Advisory | CHS | 20 hr |
| Dec 23, 10:29 PM EST | Areal Flood Advisory | CHS | 6 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 | 20 |
| Tornado Warning | 3 |
| Severe Thunderstorm Watch | 4 |
| Tornado Watch | 3 |
| Mesoscale Discussion | 20 |
| Special Weather Statement | 28 |
| Flooding | |
| Flash Flood Warning | 1 |
| River Flood Warning | 4 |
| Flash Flood Watch | 3 |
| Areal Flood Advisory | 24 |
| Heat | |
| Heat Advisory | 2 |
| Cold | |
| Freeze Warning | 4 |
| Freeze Watch | 4 |
| Wind and dust | |
| Lake Wind Advisory | 16 |
| Wind Advisory | 2 |
| Fog and smoke | |
| Dense Fog Advisory | 10 |
| Tropical | |
| Hurricane Warning | 1 |
| Tropical Storm Warning | 1 |
| Hurricane Watch | 1 |
The busiest days
Days with the most alerts issued, by UTC date.
Nearby
Alerts in force nowTornadoes on recordForecastThe radar archive20182020
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.