Alert archive / South Carolina / Colleton County
Weather alerts in Colleton County, South Carolina, 2026
189 weather alerts in 2026, from the National Weather Service and the Storm Prediction Center. An alert counts here when it covered this county.
Colleton County and its neighbors
Each county as a circle sized by its count in 2026. Tap one for its archive.
- Alerts
- 189
- Warnings
- 34
- Watches
- 14
- Advisories
- 88
- Busiest month
- July48 alerts
- Busiest day
- July 5, 20269 alerts
Over time
By month
Warning verification
How often warnings here had a storm report inside them, and how much warning the reports had.
Colleton County, 2026
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| Tornado warnings | 0 | 0 | ||||
| Severe thunderstorm warnings | 19 | 12 | 37% | 53 | 21% | 26 min |
| Flash flood warnings | 3 | 1 | 67% | 0 |
Each office's whole area, 2026
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| NWS Charleston, SC: tornado warnings | 3 | 1 | 67% | 4 | 25% | 1 min |
| NWS Charleston, SC: severe thunderstorm warnings | 96 | 48 | 50% | 376 | 48% | 19 min |
| NWS Charleston, SC: flash flood warnings | 19 | 11 | 42% | 63 | 70% | 52 min |
An office's figures cover every county it serves, including across state lines.
The year is still running; reports filed late and damage surveys can still change these figures.
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 7, 10:15 PM EST | Dense Fog Advisory | CHS | 12 hr |
| Jan 8, 8:08 PM EST | Dense Fog Advisory | CHS | 15 hr |
| Jan 11, 2:34 PM EST | Red Flag Warning | CHS | 4 hr |
| Jan 15, 12:35 AM EST | Cold Weather Advisory | CHS | 32 hr |
| Jan 23, 12:57 PM EST | Winter Weather Advisory | CHS | 51 hr |
| Jan 26, 12:30 AM EST | Cold Weather Advisory | CHS | 33 hr |
| Jan 29, 12:23 PM EST | Winter Storm Watch | CHS | 24 hr |
| Jan 29, 12:25 PM EST | Extreme Cold Watch | CHS | 24 hr |
| Jan 30, 12:50 AM EST | Winter Storm Warning | CHS | 51 hr |
| Jan 30, 12:30 PM EST | Winter Weather Advisory | CHS | 46 hr |
| Jan 30, 12:33 PM EST | Extreme Cold Warning | CHS | 48 hr |
| Feb 1, 12:43 AM EST | Cold Weather Advisory | CHS | 32 hr |
| Feb 6, 1:57 AM EST | Freezing Fog Advisory | CHS | 6 hr |
| Feb 21, 1:44 PM EST | Mesoscale Discussion | SPC | 3 hr |
| Feb 22, 7:50 AM EST | Wind Advisory | CHS | 11 hr |
| Feb 22, 11:50 AM EST | Cold Weather Advisory | CHS | 19 hr |
| Mar 1, 12:14 AM EST | Dense Fog Advisory | CHS | 10 hr |
| Mar 4, 3:12 AM EST | Dense Fog Advisory | CHS | 6 hr |
| Mar 5, 3:52 AM EST | Dense Fog Advisory | CHS | 4 hr |
| Mar 7, 3:35 AM EST | Dense Fog Advisory | CHS | 5 hr |
| Mar 8, 3:46 PM EDT | Special Weather Statement | CHS | 29 min |
| Mar 12, 7:14 AM EDT | Tornado Watch | SPC | 5 hr |
| Mar 12, 9:34 AM EDT | Severe Thunderstorm Warning | CHS | 41 min |
| Mar 12, 9:52 AM EDT | Mesoscale Discussion | SPC | 83 min |
| Mar 12, 10:31 AM EDT | Special Weather Statement | CHS | 29 min |
| Mar 12, 10:59 AM EDT | Special Weather Statement | CHS | 31 min |
| Mar 16, 1:47 AM EDT | Freeze Warning | CHS | 32 hr |
| Mar 16, 7:59 AM EDT | Tornado Watch | SPC | 7 hr |
| Mar 16, 10:36 AM EDT | Mesoscale Discussion | SPC | 84 min |
| Mar 17, 1:38 AM EDT | Freeze Warning | CHS | 32 hr |
| Mar 18, 2:15 PM EDT | Frost Advisory | CHS | 19 hr |
| Mar 27, 2:00 AM EDT | Fire Weather Watch | CHS | 10 hr |
| Mar 27, 11:44 AM EDT | Red Flag Warning | CHS | 32 hr |
| Apr 19, 7:11 PM EDT | Coastal Flood Advisory | CHS | 4 hr |
| Apr 21, 10:19 PM EDT | Coastal Flood Advisory | CHS | 3 hr |
| Apr 27, 2:13 PM EDT | Coastal Flood Advisory | CHS | 5 hr |
| Apr 30, 2:12 PM EDT | Coastal Flood Advisory | CHS | 8 hr |
| May 1, 1:13 PM EDT | Coastal Flood Advisory | CHS | 10 hr |
| May 2, 2:12 PM EDT | Coastal Flood Advisory | CHS | 8 hr |
| May 7, 2:14 PM EDT | Special Weather Statement | CHS | 31 min |
| May 15, 10:03 AM EDT | Coastal Flood Advisory | CHS | 11 hr |
| May 16, 2:10 PM EDT | Coastal Flood Advisory | CHS | 8 hr |
| May 17, 2:09 PM EDT | Coastal Flood Advisory | CHS | 8 hr |
| May 18, 5:38 PM EDT | Coastal Flood Advisory | CHS | 6 hr |
| May 28, 3:06 PM EDT | Areal Flood Advisory | CHS | 114 min |
| May 31, 7:12 PM EDT | Coastal Flood Advisory | CHS | 3 hr |
| Jun 2, 2:17 PM EDT | Rip Current Statement | CHS | 30 hr |
| Jun 12, 1:59 PM EDT | Special Weather Statement | CHS | 31 min |
| Jun 12, 2:03 PM EDT | Severe Thunderstorm Warning | CHS | 57 min |
| Jun 13, 1:46 AM EDT | Heat Advisory | CHS | 15 hr |
| Jun 13, 3:07 PM EDT | Mesoscale Discussion | SPC | 2 hr |
| Jun 13, 4:41 PM EDT | Coastal Flood Advisory | CHS | 3 hr |
| Jun 13, 7:02 PM EDT | Special Weather Statement | CHS | 43 min |
| Jun 14, 2:14 AM EDT | Heat Advisory | CHS | 14 hr |
| Jun 14, 2:08 PM EDT | Mesoscale Discussion | SPC | 2 hr |
| Jun 14, 2:20 PM EDT | Coastal Flood Advisory | CHS | 7 hr |
| Jun 14, 4:56 PM EDT | Severe Thunderstorm Warning | CHS | 34 min |
| Jun 14, 5:13 PM EDT | Severe Thunderstorm Warning | CHS | 47 min |
| Jun 16, 9:04 PM EDT | Coastal Flood Advisory | CHS | 3 hr |
| Jun 18, 3:11 PM EDT | Special Weather Statement | CHS | 34 min |
| Jun 18, 3:17 PM EDT | Mesoscale Discussion | SPC | 118 min |
| Jun 18, 3:20 PM EDT | Severe Thunderstorm Warning | CHS | 40 min |
| Jun 18, 4:26 PM EDT | Severe Thunderstorm Warning | CHS | 49 min |
| Jun 18, 4:43 PM EDT | Severe Thunderstorm Warning | CHS | 32 min |
| Jun 18, 5:12 PM EDT | Severe Thunderstorm Warning | CHS | 48 min |
| Jun 18, 5:41 PM EDT | Severe Thunderstorm Warning | CHS | 29 min |
| Jun 26, 5:53 PM EDT | Special Weather Statement | CHS | 37 min |
| Jun 28, 2:12 AM EDT | Heat Advisory | CHS | 16 hr |
| Jul 5, 2:10 AM EDT | Heat Advisory | CHS | 16 hr |
| Jul 5, 1:15 PM EDT | Special Weather Statement | CHS | 45 min |
| Jul 5, 1:22 PM EDT | Severe Thunderstorm Warning | CHS | 25 min |
| Jul 5, 1:53 PM EDT | Mesoscale Discussion | SPC | 3 hr |
| Jul 5, 2:07 PM EDT | Special Weather Statement | CHS | 53 min |
| Jul 5, 2:22 PM EDT | Severe Thunderstorm Warning | CHS | 53 min |
| Jul 5, 4:47 PM EDT | Special Weather Statement | CHS | 43 min |
| Jul 5, 4:57 PM EDT | Severe Thunderstorm Warning | CHS | 33 min |
| Jul 5, 5:27 PM EDT | Special Weather Statement | CHS | 48 min |
| Jul 6, 2:16 AM EDT | Heat Advisory | CHS | 17 hr |
| Jul 6, 1:36 PM EDT | Heat Advisory | CHS | 29 hr |
| Jul 7, 12:56 PM EDT | Heat Advisory | CHS | 30 hr |
| Jul 7, 12:56 PM EDT | Extreme Heat Watch | CHS | 13 hr |
| Jul 8, 2:07 AM EDT | Extreme Heat Warning | CHS | 17 hr |
| Jul 8, 2:39 PM EDT | Heat Advisory | CHS | 28 hr |
| Jul 8, 2:39 PM EDT | Extreme Heat Warning | CHS | 28 hr |
| Jul 9, 2:20 PM EDT | Heat Advisory | CHS | 29 hr |
| Jul 10, 2:16 PM EDT | Heat Advisory | CHS | 29 hr |
| Jul 10, 6:10 PM EDT | Severe Thunderstorm Warning | CHS | 22 min |
| Jul 10, 6:57 PM EDT | Special Weather Statement | CHS | 33 min |
| Jul 11, 2:26 PM EDT | Severe Thunderstorm Watch | SPC | 4 hr |
| Jul 11, 2:42 PM EDT | Heat Advisory | CHS | 28 hr |
| Jul 11, 4:32 PM EDT | Special Weather Statement | CHS | 28 min |
| Jul 11, 4:57 PM EDT | Special Weather Statement | CHS | 48 min |
| Jul 12, 1:24 PM EDT | Mesoscale Discussion | SPC | 2 hr |
| Jul 12, 2:26 PM EDT | Special Weather Statement | CHS | 34 min |
| Jul 12, 5:32 PM EDT | Special Weather Statement | CHS | 58 min |
| Jul 12, 6:29 PM EDT | Mesoscale Discussion | SPC | 61 min |
| Jul 13, 2:24 PM EDT | Coastal Flood Advisory | CHS | 8 hr |
| Jul 13, 7:49 PM EDT | Areal Flood Advisory | CHS | 93 min |
| Jul 14, 2:10 PM EDT | Coastal Flood Advisory | CHS | 8 hr |
| Jul 15, 2:09 PM EDT | Coastal Flood Advisory | CHS | 9 hr |
| Jul 16, 2:06 PM EDT | Coastal Flood Advisory | CHS | 9 hr |
| Jul 18, 2:16 AM EDT | Heat Advisory | CHS | 17 hr |
| Jul 24, 2:18 AM EDT | Flood Watch | CHS | 24 hr |
| Jul 24, 2:15 PM EDT | Mesoscale Discussion | SPC | 2 hr |
| Jul 24, 5:36 PM EDT | Areal Flood Advisory | CHS | 84 min |
| Jul 24, 7:04 PM EDT | Special Weather Statement | CHS | 26 min |
| Jul 24, 7:36 PM EDT | Flash Flood Warning | CHS | 3 hr |
| Jul 24, 8:30 PM EDT | Areal Flood Advisory | CHS | 90 min |
| Jul 26, 11:56 AM EDT | Flood Watch | CHS | 7 hr |
| Jul 26, 4:24 PM EDT | Mesoscale Discussion | SPC | 2 hr |
| Jul 26, 4:28 PM EDT | Special Weather Statement | CHS | 32 min |
| Jul 26, 4:34 PM EDT | Areal Flood Advisory | CHS | 86 min |
| Jul 26, 8:54 PM EDT | Areal Flood Advisory | CHS | 66 min |
| Jul 27, 2:13 PM EDT | Heat Advisory | CHS | 29 hr |
| Jul 27, 2:51 PM EDT | Mesoscale Discussion | SPC | 114 min |
| Jul 28, 2:19 PM EDT | Heat Advisory | CHS | 29 hr |
| Aug 6, 12:55 PM EDT | Special Weather Statement | CHS | 35 min |
| Aug 10, 1:51 PM EDT | Heat Advisory | CHS | 30 hr |
| Aug 10, 3:33 PM EDT | Special Weather Statement | CHS | 27 min |
| Aug 10, 3:58 PM EDT | Special Weather Statement | CHS | 32 min |
| Aug 11, 1:59 PM EDT | Heat Advisory | CHS | 29 hr |
| Aug 11, 4:17 PM EDT | Areal Flood Advisory | CHS | 2 hr |
| Aug 12, 2:15 AM EDT | Extreme Heat Watch | CHS | 11 hr |
| Aug 12, 1:30 PM EDT | Heat Advisory | CHS | 55 hr |
| Aug 12, 1:30 PM EDT | Extreme Heat Warning | CHS | 55 hr |
| Aug 12, 7:20 PM EDT | Coastal Flood Advisory | CHS | 114 min |
| Aug 13, 1:48 AM EDT | Extreme Heat Watch | CHS | 12 hr |
| Aug 13, 5:07 PM EDT | Severe Thunderstorm Warning | CHS | 53 min |
| Aug 13, 5:28 PM EDT | Severe Thunderstorm Warning | CHS | 62 min |
| Aug 13, 6:30 PM EDT | Severe Thunderstorm Warning | CHS | 38 min |
| Aug 13, 8:22 PM EDT | Coastal Flood Advisory | CHS | 79 min |
| Aug 14, 2:00 AM EDT | Extreme Heat Watch | CHS | 11 hr |
| Aug 14, 12:49 PM EDT | Heat Advisory | CHS | 31 hr |
| Aug 14, 12:49 PM EDT | Extreme Heat Warning | CHS | 31 hr |
| Aug 15, 12:26 PM EDT | Heat Advisory | CHS | 32 hr |
| Aug 15, 8:33 PM EDT | Areal Flood Advisory | CHS | 70 min |
| Aug 16, 2:11 PM EDT | Heat Advisory | CHS | 30 hr |
| Aug 16, 2:11 PM EDT | Extreme Heat Warning | CHS | 30 hr |
| Aug 17, 1:47 AM EDT | Extreme Heat Watch | CHS | 11 hr |
| Aug 17, 1:16 PM EDT | Heat Advisory | CHS | 31 hr |
| Aug 17, 1:16 PM EDT | Extreme Heat Warning | CHS | 31 hr |
| Aug 18, 2:18 PM EDT | Heat Advisory | CHS | 30 hr |
| Aug 19, 2:18 PM EDT | Heat Advisory | CHS | 30 hr |
| Aug 19, 6:49 PM EDT | Special Weather Statement | CHS | 26 min |
| Aug 21, 2:04 AM EDT | Heat Advisory | CHS | 17 hr |
| Aug 21, 6:16 PM EDT | Mesoscale Discussion | SPC | 119 min |
| Aug 21, 7:57 PM EDT | Special Weather Statement | CHS | 18 min |
| Aug 22, 5:06 PM EDT | Areal Flood Advisory | CHS | 114 min |
| Aug 22, 7:58 PM EDT | Areal Flood Advisory | CHS | 2 hr |
| Aug 22, 8:00 PM EDT | Severe Thunderstorm Warning | CHS | 60 min |
| Aug 22, 8:42 PM EDT | Areal Flood Advisory | CHS | 3 hr |
| Aug 23, 1:48 PM EDT | Mesoscale Discussion | SPC | 117 min |
| Aug 26, 3:52 PM EDT | Special Weather Statement | CHS | 23 min |
| Aug 26, 4:22 PM EDT | Special Weather Statement | CHS | 23 min |
| Aug 26, 5:03 PM EDT | Special Weather Statement | CHS | 27 min |
| Aug 27, 4:44 PM EDT | Special Weather Statement | CHS | 31 min |
| Aug 27, 5:06 PM EDT | Severe Thunderstorm Warning | CHS | 54 min |
| Aug 27, 5:13 PM EDT | Special Weather Statement | CHS | 47 min |
| Aug 27, 5:52 PM EDT | Areal Flood Advisory | CHS | 53 min |
| Aug 27, 5:59 PM EDT | Areal Flood Advisory | CHS | 61 min |
| Aug 27, 6:22 PM EDT | Flash Flood Warning | CHS | 2 hr |
| Sep 4, 1:54 PM EDT | Heat Advisory | CHS | 30 hr |
| Sep 5, 5:40 PM EDT | Mesoscale Discussion | SPC | 95 min |
| Sep 5, 6:30 PM EDT | Severe Thunderstorm Watch | SPC | 2 hr |
| Sep 6, 1:18 PM EDT | Mesoscale Discussion | SPC | 117 min |
| Sep 6, 4:32 PM EDT | Mesoscale Discussion | SPC | 88 min |
| Sep 6, 7:00 PM EDT | Mesoscale Discussion | SPC | 60 min |
| Sep 6, 7:38 PM EDT | Severe Thunderstorm Warning | CHS | 67 min |
| Sep 7, 7:00 AM EDT | Coastal Flood Advisory | CHS | 12 hr |
| Sep 7, 2:28 PM EDT | Rip Current Statement | CHS | 30 hr |
| Sep 8, 6:55 AM EDT | Coastal Flood Advisory | CHS | 14 hr |
| Sep 9, 2:22 AM EDT | Rip Current Statement | CHS | 18 hr |
| Sep 9, 6:48 AM EDT | Coastal Flood Advisory | CHS | 15 hr |
| Sep 10, 12:26 PM EDT | Coastal Flood Advisory | CHS | 10 hr |
| Sep 11, 2:28 PM EDT | Special Weather Statement | CHS | 32 min |
| Sep 11, 4:28 PM EDT | Flash Flood Warning | CHS | 2 hr |
| Sep 11, 6:03 PM EDT | Areal Flood Advisory | CHS | 87 min |
| Sep 21, 5:16 PM EDT | Special Weather Statement | CHS | 29 min |
| Sep 22, 6:31 PM EDT | Areal Flood Advisory | CHS | 59 min |
| Sep 23, 1:01 PM EDT | Coastal Flood Advisory | CHS | 6 hr |
| Sep 23, 1:01 PM EDT | Rip Current Statement | CHS | 31 hr |
| Sep 24, 8:39 AM EDT | Coastal Flood Advisory | CHS | 12 hr |
| Sep 25, 3:05 AM EDT | Coastal Flood Advisory | CHS | 6 hr |
| Sep 25, 1:15 PM EDT | Coastal Flood Advisory | CHS | 8 hr |
| Sep 26, 2:09 AM EDT | Coastal Flood Advisory | CHS | 8 hr |
| Sep 26, 2:24 PM EDT | Coastal Flood Advisory | CHS | 8 hr |
| Sep 27, 2:23 AM EDT | Coastal Flood Advisory | CHS | 9 hr |
| Sep 27, 2:06 PM EDT | Coastal Flood Advisory | CHS | 8 hr |
| Sep 28, 2:12 AM EDT | Coastal Flood Advisory | CHS | 10 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 | 19 |
| Severe Thunderstorm Watch | 2 |
| Tornado Watch | 2 |
| Mesoscale Discussion | 18 |
| Special Weather Statement | 31 |
| Flooding | |
| Flash Flood Warning | 3 |
| Flood Watch | 2 |
| Areal Flood Advisory | 15 |
| Winter | |
| Winter Storm Warning | 1 |
| Winter Storm Watch | 1 |
| Winter Weather Advisory | 2 |
| Heat | |
| Extreme Heat Warning | 6 |
| Extreme Heat Watch | 5 |
| Heat Advisory | 25 |
| Cold | |
| Extreme Cold Warning | 1 |
| Freeze Warning | 2 |
| Extreme Cold Watch | 1 |
| Cold Weather Advisory | 4 |
| Frost Advisory | 1 |
| Wind and dust | |
| Wind Advisory | 1 |
| Fire | |
| Red Flag Warning | 2 |
| Fire Weather Watch | 1 |
| Fog and smoke | |
| Dense Fog Advisory | 6 |
| Freezing Fog Advisory | 1 |
| Coast and beach | |
| Coastal Flood Advisory | 33 |
| Rip Current Statement | 4 |
The busiest days
Days with the most alerts issued, by UTC date.
Nearby
Alerts in force nowTornadoes on recordForecastThe radar archive2025
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.