Alert archive / South Carolina / Hampton County
Weather alerts in Hampton County, South Carolina, 2023
121 weather alerts in 2023, from the National Weather Service and the Storm Prediction Center. An alert counts here when it covered this county.
Hampton County and its neighbors
Each county as a circle sized by its count in 2023. Tap one for its archive.
- Alerts
- 121
- Warnings
- 42
- Watches
- 13
- Advisories
- 30
- Busiest month
- August40 alerts
- Busiest day
- August 30, 20238 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 2 tornado warnings covering Hampton County in 2023 had a tornado report inside them.
Hampton County, 2023
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| Tornado warnings | 2 | 0 | 100% | 0 | ||
| Severe thunderstorm warnings | 23 | 18 | 22% | 22 | 64% | 17 min |
| Flash flood warnings | 4 | 2 | 50% | 2 | 50% | 118 min |
Each office's whole area, 2023
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| NWS Charleston, SC: tornado warnings | 20 | 3 | 85% | 8 | 75% | 8 min |
| NWS Charleston, SC: severe thunderstorm warnings | 96 | 60 | 38% | 367 | 69% | 23 min |
| NWS Charleston, SC: flash flood warnings | 8 | 5 | 38% | 18 | 67% | 150 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, 1:04 AM EST | Dense Fog Advisory | CHS | 11 hr |
| Jan 1, 2:55 PM EST | Dense Fog Advisory | CHS | 20 hr |
| Jan 2, 10:16 PM EST | Dense Fog Advisory | CHS | 12 hr |
| Jan 4, 8:36 AM EST | Tornado Watch | SPC | 9 hr |
| Jan 4, 10:20 AM EST | Severe Thunderstorm Warning | CHS | 55 min |
| Jan 4, 10:58 AM EST | Special Weather Statement | CHS | 47 min |
| Jan 4, 11:08 AM EST | Severe Thunderstorm Warning | CHS | 30 min |
| Jan 4, 11:19 AM EST | Severe Thunderstorm Warning | CHS | 41 min |
| Jan 4, 11:31 AM EST | Tornado Warning | CHS | 16 min |
| Jan 12, 8:12 PM EST | Mesoscale Discussion | SPC | 93 min |
| Jan 13, 9:59 AM EST | River Flood Warning | CHS | 47 days |
| Jan 30, 10:37 PM EST | Dense Fog Advisory | CHS | 11 hr |
| Feb 1, 4:59 AM EST | Dense Fog Advisory | CHS | 4 hr |
| Feb 5, 7:29 PM EST | Dense Fog Advisory | CHS | 11 hr |
| Mar 3, 2:58 AM EST | Wind Advisory | CHS | 21 hr |
| Mar 13, 7:36 PM EDT | Freeze Watch | CHS | 20 hr |
| Mar 14, 3:07 PM EDT | Freeze Watch | CHS | 24 hr |
| Mar 14, 3:07 PM EDT | Freeze Warning | CHS | 18 hr |
| Mar 15, 3:17 PM EDT | Freeze Warning | CHS | 18 hr |
| Mar 18, 3:44 PM EDT | Freeze Watch | CHS | 24 hr |
| Mar 19, 3:25 PM EDT | Freeze Watch | CHS | 24 hr |
| Mar 20, 3:05 PM EDT | Frost Advisory | CHS | 18 hr |
| Mar 23, 1:00 AM EDT | Dense Fog Advisory | CHS | 8 hr |
| Mar 26, 6:04 AM EDT | Mesoscale Discussion | SPC | 116 min |
| Mar 27, 11:02 AM EDT | Severe Thunderstorm Watch | SPC | 7 hr |
| Apr 1, 12:55 PM EDT | Mesoscale Discussion | SPC | 2 hr |
| Apr 1, 9:03 PM EDT | River Flood Warning | CHS | 8 days |
| Apr 5, 5:36 AM EDT | Dense Fog Advisory | CHS | 2 hr |
| Apr 12, 12:16 PM EDT | River Flood Warning | CHS | 12 days |
| Apr 15, 5:27 AM EDT | Dense Fog Advisory | CHS | 4 hr |
| May 27, 12:15 PM EDT | River Flood Warning | CHS | 21 hr |
| Jun 6, 5:55 PM EDT | Mesoscale Discussion | SPC | 95 min |
| Jun 6, 7:48 PM EDT | Special Weather Statement | CHS | 27 min |
| Jun 7, 7:08 PM EDT | Special Weather Statement | CHS | 37 min |
| Jun 11, 4:04 PM EDT | Special Weather Statement | CHS | 26 min |
| Jun 11, 4:22 PM EDT | Special Weather Statement | CHS | 38 min |
| Jun 11, 4:30 PM EDT | Severe Thunderstorm Warning | CHS | 60 min |
| Jun 12, 2:25 PM EDT | Mesoscale Discussion | SPC | 95 min |
| Jun 14, 4:21 PM EDT | Tornado Watch | SPC | 6 hr |
| Jun 19, 10:44 AM EDT | Severe Thunderstorm Warning | CHS | 61 min |
| Jun 20, 8:58 PM EDT | Areal Flood Advisory | CHS | 92 min |
| Jun 21, 4:21 PM EDT | Special Weather Statement | CHS | 24 min |
| Jun 25, 10:22 AM EDT | River Flood Warning | CHS | 9 days |
| Jun 26, 4:55 PM EDT | Mesoscale Discussion | SPC | 95 min |
| Jul 2, 3:28 AM EDT | Heat Advisory | CHS | 15 hr |
| Jul 3, 3:21 AM EDT | Heat Advisory | CHS | 15 hr |
| Jul 5, 2:38 PM EDT | Mesoscale Discussion | SPC | 2 hr |
| Jul 8, 4:47 PM EDT | Special Weather Statement | CHS | 28 min |
| Jul 8, 5:17 PM EDT | Special Weather Statement | CHS | 43 min |
| Jul 19, 4:41 PM EDT | Severe Thunderstorm Warning | CHS | 64 min |
| Jul 19, 5:08 PM EDT | Special Weather Statement | CHS | 37 min |
| Jul 19, 6:32 PM EDT | Severe Thunderstorm Warning | CHS | 58 min |
| Jul 19, 7:19 PM EDT | Special Weather Statement | CHS | 11 min |
| Jul 19, 7:30 PM EDT | Severe Thunderstorm Warning | CHS | 60 min |
| Jul 20, 5:59 PM EDT | Mesoscale Discussion | SPC | 3 hr |
| Jul 20, 6:43 PM EDT | Severe Thunderstorm Watch | SPC | 6 hr |
| Jul 20, 9:22 PM EDT | Severe Thunderstorm Warning | CHS | 68 min |
| Jul 21, 10:32 PM EDT | Mesoscale Discussion | SPC | 88 min |
| Jul 23, 10:06 AM EDT | Mesoscale Discussion | SPC | 114 min |
| Jul 23, 4:09 PM EDT | Areal Flood Advisory | CHS | 3 hr |
| Jul 23, 4:21 PM EDT | Special Weather Statement | CHS | 39 min |
| Jul 23, 4:42 PM EDT | Severe Thunderstorm Warning | CHS | 48 min |
| Jul 30, 7:35 PM EDT | Severe Thunderstorm Warning | CHS | 28 min |
| Jul 30, 8:02 PM EDT | Severe Thunderstorm Warning | CHS | 43 min |
| Jul 30, 8:30 PM EDT | Severe Thunderstorm Warning | CHS | 38 min |
| Aug 1, 2:58 PM EDT | Mesoscale Discussion | SPC | 92 min |
| Aug 6, 6:24 PM EDT | Mesoscale Discussion | SPC | 2 hr |
| Aug 7, 3:16 AM EDT | Heat Advisory | CHS | 16 hr |
| Aug 7, 6:21 PM EDT | Severe Thunderstorm Warning | CHS | 54 min |
| Aug 7, 7:11 PM EDT | Severe Thunderstorm Warning | CHS | 52 min |
| Aug 7, 7:27 PM EDT | Mesoscale Discussion | SPC | 2 hr |
| Aug 7, 7:42 PM EDT | Severe Thunderstorm Watch | SPC | 3 hr |
| Aug 7, 7:49 PM EDT | Severe Thunderstorm Warning | CHS | 56 min |
| Aug 7, 8:10 PM EDT | Severe Thunderstorm Warning | CHS | 65 min |
| Aug 8, 3:06 AM EDT | Heat Advisory | CHS | 17 hr |
| Aug 8, 7:36 PM EDT | Severe Thunderstorm Warning | CHS | 54 min |
| Aug 8, 8:18 PM EDT | Severe Thunderstorm Warning | CHS | 57 min |
| Aug 11, 12:32 PM EDT | Special Weather Statement | CHS | 43 min |
| Aug 11, 12:54 PM EDT | Mesoscale Discussion | SPC | 2 hr |
| Aug 11, 1:00 PM EDT | Severe Thunderstorm Warning | CHS | 45 min |
| Aug 12, 8:24 PM EDT | Heat Advisory | CHS | 22 hr |
| Aug 13, 8:48 PM EDT | Heat Advisory | CHS | 22 hr |
| Aug 14, 8:31 PM EDT | Heat Advisory | CHS | 22 hr |
| Aug 15, 5:30 PM EDT | Special Weather Statement | CHS | 45 min |
| Aug 15, 5:37 PM EDT | Severe Thunderstorm Warning | CHS | 68 min |
| Aug 15, 6:42 PM EDT | Special Weather Statement | CHS | 48 min |
| Aug 15, 6:45 PM EDT | Areal Flood Advisory | CHS | 2 hr |
| Aug 15, 7:10 PM EDT | Flash Flood Warning | CHS | 99 min |
| Aug 15, 7:27 PM EDT | Special Weather Statement | CHS | 48 min |
| Aug 16, 7:09 PM EDT | Areal Flood Advisory | CHS | 100 min |
| Aug 16, 8:10 PM EDT | Areal Flood Advisory | CHS | 39 min |
| Aug 16, 8:39 PM EDT | Flash Flood Warning | CHS | 4 hr |
| Aug 16, 9:34 PM EDT | Areal Flood Advisory | CHS | 116 min |
| Aug 29, 5:04 AM EDT | Flood Watch | CHS | 45 hr |
| Aug 29, 11:02 AM EDT | Tropical Storm Warning | CHS | 48 hr |
| Aug 30, 4:23 AM EDT | Mesoscale Discussion | SPC | 2 hr |
| Aug 30, 10:51 AM EDT | Tornado Watch | SPC | 11 hr |
| Aug 30, 3:54 PM EDT | Areal Flood Advisory | CHS | 5 hr |
| Aug 30, 4:47 PM EDT | Flash Flood Warning | CHS | 3 hr |
| Aug 30, 5:20 PM EDT | Tornado Warning | CHS | 25 min |
| Aug 30, 5:41 PM EDT | Areal Flood Advisory | CHS | 45 min |
| Aug 30, 6:26 PM EDT | Flash Flood Warning | CHS | 4 hr |
| Aug 30, 7:52 PM EDT | Areal Flood Warning | CHS | 6 hr |
| Aug 30, 9:43 PM EDT | River Flood Warning | CHS | 21 days |
| Aug 30, 10:00 PM EDT | Areal Flood Warning | CHS | 6 hr |
| Sep 11, 4:48 PM EDT | Special Weather Statement | CHS | 42 min |
| Sep 11, 5:28 PM EDT | Special Weather Statement | CHS | 47 min |
| Sep 11, 6:38 PM EDT | Severe Thunderstorm Warning | CHS | 67 min |
| Sep 17, 1:45 PM EDT | Mesoscale Discussion | SPC | 2 hr |
| Oct 20, 1:51 PM EDT | Mesoscale Discussion | SPC | 114 min |
| Oct 20, 4:42 PM EDT | Severe Thunderstorm Warning | CHS | 50 min |
| Oct 20, 7:06 PM EDT | Special Weather Statement | CHS | 39 min |
| Oct 30, 5:42 AM EDT | Dense Fog Advisory | CHS | 4 hr |
| Oct 31, 3:33 AM EDT | Freeze Watch | CHS | 23 hr |
| Nov 1, 3:01 AM EDT | Freeze Warning | CHS | 31 hr |
| Nov 2, 3:46 PM EDT | Frost Advisory | CHS | 18 hr |
| Nov 27, 3:26 AM EST | Freeze Watch | CHS | 23 hr |
| Nov 28, 2:52 AM EST | Freeze Warning | CHS | 30 hr |
| Dec 10, 9:08 PM EST | Special Weather Statement | CHS | 52 min |
| Dec 16, 3:02 PM EST | Wind Advisory | CHS | 36 hr |
| Dec 26, 7:15 PM EST | Dense Fog Advisory | CHS | 9 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 | 23 |
| Tornado Warning | 2 |
| Severe Thunderstorm Watch | 3 |
| Tornado Watch | 3 |
| Mesoscale Discussion | 17 |
| Special Weather Statement | 19 |
| Flooding | |
| Areal Flood Warning | 2 |
| Flash Flood Warning | 4 |
| River Flood Warning | 6 |
| Flood Watch | 1 |
| Areal Flood Advisory | 8 |
| Heat | |
| Heat Advisory | 7 |
| Cold | |
| Freeze Warning | 4 |
| Freeze Watch | 6 |
| Frost Advisory | 2 |
| Wind and dust | |
| Wind Advisory | 2 |
| Fog and smoke | |
| Dense Fog Advisory | 11 |
| Tropical | |
| Tropical Storm Warning | 1 |
The busiest days
Days with the most alerts issued, by UTC date.
Nearby
Alerts in force nowTornadoes on recordForecastThe radar archive20222024
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.