Alert archive / South Carolina / Colleton County

Weather alerts in Colleton County, South Carolina, 2024

174 weather alerts in 2024, 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 2024. Tap one for its archive.

Alerts: 174
Warnings: 47
Watches: 17
Advisories: 50
Busiest month: August36 alerts
Busiest day: September 27, 202412 alerts

Over time

By month

Warning verification

How often warnings here had a storm report inside them, and how much warning the reports had.

4 of 12 tornado warnings covering Colleton County in 2024 had a tornado report inside them; 13 of 14 tornado reports fell inside a warning, on average 12 minutes after it went out.

Colleton County, 2024

	Warnings	With a report	False alarm ratio	Reports	Inside a warning	Mean lead time
Tornado warnings	12	4	67%	14	93%	12 min
Severe thunderstorm warnings	19	12	37%	59	34%	33 min
Flash flood warnings	4	2	50%	14	86%	597 min

Each office's whole area, 2024

	Warnings	With a report	False alarm ratio	Reports	Inside a warning	Mean lead time
NWS Charleston, SC: tornado warnings	60	12	80%	45	82%	13 min
NWS Charleston, SC: severe thunderstorm warnings	78	48	38%	263	64%	25 min
NWS Charleston, SC: flash flood warnings	19	11	42%	65	74%	406 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 8, 3:37 AM EST	Wind Advisory	CHS	50 hr
Jan 9, 10:45 AM EST	Mesoscale Discussion	SPC	2 hr
Jan 9, 11:41 AM EST	Tornado Watch	SPC	6 hr
Jan 9, 12:56 PM EST	Mesoscale Discussion	SPC	94 min
Jan 9, 2:47 PM EST	Severe Thunderstorm Warning	CHS	58 min
Jan 9, 3:25 PM EST	Severe Thunderstorm Warning	CHS	65 min
Jan 9, 4:02 PM EST	Mesoscale Discussion	SPC	88 min
Jan 9, 4:14 PM EST	Severe Thunderstorm Warning Considerable damage threat	CHS	61 min
Jan 12, 7:27 PM EST	Mesoscale Discussion	SPC	3 hr
Jan 12, 9:19 PM EST	River Flood Warning	CHS	21 days
Jan 19, 3:05 PM EST	Wind Chill Advisory	CHS	43 hr
Jan 26, 9:24 PM EST	Dense Fog Advisory	CHS	13 hr
Feb 13, 11:09 AM EST	Areal Flood Advisory	CHS	22 hr
Feb 13, 9:32 PM EST	River Flood Warning	CHS	21 days
Feb 23, 12:25 PM EST	Mesoscale Discussion	SPC	3 hr
Mar 3, 12:00 AM EST	Dense Fog Advisory	CHS	10 hr
Mar 4, 12:00 AM EST	Dense Fog Advisory	CHS	10 hr
Mar 6, 1:05 PM EST	River Flood Warning	CHS	13 days
Mar 6, 1:41 PM EST	Mesoscale Discussion	SPC	2 hr
Mar 9, 6:43 AM EST	Special Weather Statement	CHS	32 min
Mar 9, 7:09 AM EST	Areal Flood Advisory	CHS	81 min
Mar 27, 4:22 PM EDT	Mesoscale Discussion	SPC	113 min
Apr 10, 3:22 PM EDT	Wind Advisory	CHS	29 hr
Apr 11, 8:14 AM EDT	Areal Flood Advisory	CHS	5 hr
Apr 19, 1:07 PM EDT	Mesoscale Discussion	SPC	113 min
Apr 19, 4:29 PM EDT	Mesoscale Discussion	SPC	2 hr
Apr 19, 4:55 PM EDT	Mesoscale Discussion	SPC	2 hr
Apr 21, 2:14 PM EDT	Severe Thunderstorm Warning	CHS	31 min
May 2, 2:33 AM EDT	Dense Fog Advisory	CHS	7 hr
May 3, 5:04 AM EDT	Dense Fog Advisory	CHS	4 hr
May 6, 6:35 PM EDT	Special Weather Statement	CHS	25 min
May 9, 10:39 AM EDT	Mesoscale Discussion	SPC	96 min
May 9, 12:12 PM EDT	Tornado Watch	SPC	5 hr
May 9, 12:25 PM EDT	Severe Thunderstorm Warning	CHS	65 min
May 9, 1:04 PM EDT	Severe Thunderstorm Warning	CHS	41 min
May 9, 1:43 PM EDT	Severe Thunderstorm Warning	CHS	62 min
May 19, 5:02 PM EDT	Areal Flood Advisory	CHS	118 min
May 24, 1:33 PM EDT	Mesoscale Discussion	SPC	87 min
May 24, 4:36 PM EDT	Severe Thunderstorm Warning	CHS	54 min
May 24, 5:31 PM EDT	Severe Thunderstorm Warning	CHS	46 min
May 25, 2:03 PM EDT	Mesoscale Discussion	SPC	117 min
May 27, 1:41 PM EDT	Mesoscale Discussion	SPC	94 min
May 27, 2:10 PM EDT	Severe Thunderstorm Watch	SPC	8 hr
May 27, 4:11 PM EDT	Mesoscale Discussion	SPC	94 min
Jun 5, 4:27 PM EDT	Special Weather Statement	CHS	48 min
Jun 10, 6:26 AM EDT	Special Weather Statement	CHS	34 min
Jun 10, 1:31 PM EDT	Mesoscale Discussion	SPC	119 min
Jun 10, 2:11 PM EDT	Severe Thunderstorm Watch	SPC	7 hr
Jun 10, 6:10 PM EDT	Mesoscale Discussion	SPC	95 min
Jun 10, 6:21 PM EDT	Severe Thunderstorm Warning	CHS	54 min
Jun 10, 7:08 PM EDT	Severe Thunderstorm Warning	CHS	52 min
Jun 10, 7:33 PM EDT	Severe Thunderstorm Warning Considerable damage threat	CHS	57 min
Jun 10, 8:46 PM EDT	Severe Thunderstorm Warning	CHS	38 min
Jun 10, 9:17 PM EDT	Special Weather Statement	CHS	28 min
Jun 25, 3:23 AM EDT	Heat Advisory	CHS	15 hr
Jun 25, 5:37 PM EDT	Special Weather Statement	CHS	38 min
Jun 25, 5:56 PM EDT	Special Weather Statement	CHS	34 min
Jun 26, 3:20 AM EDT	Heat Advisory	CHS	16 hr
Jun 26, 3:43 PM EDT	Special Weather Statement	CHS	32 min
Jun 26, 4:17 PM EDT	Special Weather Statement	CHS	28 min
Jun 27, 4:58 PM EDT	Special Weather Statement	CHS	47 min
Jun 27, 5:45 PM EDT	Special Weather Statement	CHS	45 min
Jun 27, 6:06 PM EDT	Areal Flood Advisory	CHS	114 min
Jun 29, 2:57 PM EDT	Heat Advisory	CHS	27 hr
Jun 30, 2:54 PM EDT	Flood Watch	CHS	29 hr
Jun 30, 9:45 PM EDT	Special Weather Statement	CHS	30 min
Jul 1, 10:49 PM EDT	Areal Flood Advisory	CHS	5 hr
Jul 5, 10:21 AM EDT	Heat Advisory	CHS	10 hr
Jul 5, 7:40 PM EDT	Heat Advisory	CHS	23 hr
Jul 8, 6:06 PM EDT	Special Weather Statement	CHS	24 min
Jul 9, 3:20 AM EDT	Heat Advisory	CHS	17 hr
Jul 13, 3:10 PM EDT	Severe Thunderstorm Warning	CHS	54 min
Jul 14, 2:42 AM EDT	Heat Advisory	CHS	16 hr
Jul 15, 3:23 AM EDT	Heat Advisory	CHS	17 hr
Jul 15, 3:27 PM EDT	Special Weather Statement	CHS	33 min
Jul 15, 3:37 PM EDT	Severe Thunderstorm Warning	CHS	53 min
Jul 16, 2:57 AM EDT	Heat Advisory	CHS	16 hr
Jul 19, 5:13 PM EDT	Areal Flood Advisory	CHS	107 min
Jul 20, 2:05 PM EDT	Mesoscale Discussion	SPC	115 min
Jul 20, 3:45 PM EDT	Special Weather Statement	CHS	30 min
Jul 20, 3:52 PM EDT	Special Weather Statement	CHS	23 min
Jul 20, 5:21 PM EDT	Special Weather Statement	CHS	24 min
Jul 25, 2:59 AM EDT	Flood Watch	CHS	19 hr
Jul 30, 6:35 PM EDT	Special Weather Statement	CHS	40 min
Jul 30, 6:46 PM EDT	Severe Thunderstorm Warning	CHS	59 min
Jul 30, 7:35 PM EDT	Areal Flood Advisory	CHS	2 hr
Jul 30, 7:45 PM EDT	Severe Thunderstorm Warning	CHS	45 min
Jul 30, 8:29 PM EDT	Severe Thunderstorm Warning	CHS	49 min
Jul 31, 3:16 AM EDT	Heat Advisory	CHS	15 hr
Jul 31, 3:10 PM EDT	Excessive Heat Watch	CHS	12 hr
Jul 31, 6:37 PM EDT	Special Weather Statement	CHS	23 min
Jul 31, 7:00 PM EDT	Special Weather Statement	CHS	45 min
Jul 31, 9:22 PM EDT	Heat Advisory	CHS	23 hr
Aug 1, 6:00 PM EDT	Special Weather Statement	CHS	45 min
Aug 2, 3:29 AM EDT	Heat Advisory	CHS	13 hr
Aug 2, 3:14 PM EDT	Areal Flood Advisory	CHS	79 min
Aug 2, 4:12 PM EDT	Special Weather Statement	CHS	48 min
Aug 4, 2:49 AM EDT	Flood Watch	CHS	6 days
Aug 4, 5:05 PM EDT	Tropical Storm Warning	CHS	3 days
Aug 5, 2:49 PM EDT	Mesoscale Discussion	SPC	86 min
Aug 5, 3:40 PM EDT	Tornado Watch	SPC	9 hr
Aug 5, 6:14 PM EDT	Areal Flood Advisory	CHS	3 hr
Aug 5, 7:52 PM EDT	Areal Flood Advisory	CHS	12 hr
Aug 5, 8:46 PM EDT	Flash Flood Warning Considerable damage threat	CHS	6 hr
Aug 5, 9:25 PM EDT	Tornado Warning	CHS	50 min
Aug 5, 10:33 PM EDT	Tornado Warning	CHS	42 min
Aug 6, 12:28 AM EDT	Tornado Warning	CHS	32 min
Aug 6, 12:50 AM EDT	Tornado Watch	SPC	6 hr
Aug 6, 2:12 AM EDT	Flash Flood Warning	CHS	20 hr
Aug 6, 2:35 AM EDT	Tornado Warning	CHS	25 min
Aug 6, 2:44 AM EDT	Flash Flood Warning	CHS	20 hr
Aug 6, 4:41 AM EDT	Mesoscale Discussion	SPC	94 min
Aug 6, 5:26 AM EDT	Special Weather Statement	CHS	49 min
Aug 6, 11:37 AM EDT	River Flood Warning	CHS	16 days
Aug 6, 10:24 PM EDT	Areal Flood Warning	CHS	12 hr
Aug 6, 10:52 PM EDT	Areal Flood Warning	CHS	11 hr
Aug 7, 9:41 AM EDT	Areal Flood Warning	CHS	5 days
Aug 7, 3:47 PM EDT	Flash Flood Warning Considerable damage threat	CHS	6 hr
Aug 8, 7:11 PM EDT	Special Weather Statement	CHS	34 min
Aug 10, 3:45 AM EDT	Heat Advisory	CHS	14 hr
Aug 11, 10:56 AM EDT	Flood Watch	CHS	9 hr
Aug 11, 6:18 PM EDT	Special Weather Statement	CHS	42 min
Aug 13, 1:53 PM EDT	Mesoscale Discussion	SPC	3 hr
Aug 13, 3:12 PM EDT	Special Weather Statement	CHS	48 min
Aug 13, 3:35 PM EDT	Severe Thunderstorm Warning	CHS	55 min
Aug 13, 4:08 PM EDT	Special Weather Statement	CHS	52 min
Aug 27, 7:10 AM EDT	Dense Fog Advisory	CHS	110 min
Aug 28, 7:00 AM EDT	Dense Fog Advisory	CHS	2 hr
Sep 24, 5:02 PM EDT	Tropical Storm Watch	CHS	24 hr
Sep 25, 11:01 AM EDT	Tropical Storm Warning	CHS	51 hr
Sep 26, 7:36 AM EDT	Mesoscale Discussion	SPC	114 min
Sep 26, 8:32 AM EDT	Tornado Watch	SPC	12 hr
Sep 26, 12:42 PM EDT	Mesoscale Discussion	SPC	2 hr
Sep 26, 12:57 PM EDT	Tornado Warning	CHS	18 min
Sep 26, 4:10 PM EDT	Mesoscale Discussion	SPC	2 hr
Sep 26, 6:39 PM EDT	Mesoscale Discussion	SPC	5 hr
Sep 26, 8:02 PM EDT	Tornado Warning	CHS	43 min
Sep 26, 8:56 PM EDT	Tornado Watch	SPC	11 hr
Sep 26, 9:40 PM EDT	Tornado Warning	CHS	35 min
Sep 27, 12:07 AM EDT	Tornado Warning	CHS	23 min
Sep 27, 12:28 AM EDT	Tornado Warning	CHS	32 min
Sep 27, 12:46 AM EDT	Mesoscale Discussion	SPC	119 min
Sep 27, 2:53 AM EDT	Tornado Warning	CHS	22 min
Sep 27, 3:19 AM EDT	Tornado Warning	CHS	41 min
Sep 27, 3:48 AM EDT	Tornado Warning	CHS	20 min
Sep 27, 5:17 AM EDT	Mesoscale Discussion	SPC	118 min
Sep 27, 12:23 PM EDT	Wind Advisory	CHS	7 hr
Sep 27, 3:21 PM EDT	Wind Advisory	CHS	4 hr
Oct 9, 5:09 PM EDT	Wind Advisory	CHS	23 hr
Nov 6, 3:12 AM EST	Flood Watch	CHS	35 hr
Nov 7, 4:07 AM EST	Areal Flood Advisory	CHS	3 hr
Nov 7, 4:46 AM EST	Areal Flood Advisory	CHS	5 hr
Nov 7, 7:37 AM EST	Areal Flood Advisory	CHS	3 hr
Nov 8, 3:10 AM EST	Dense Fog Advisory	CHS	7 hr
Nov 9, 9:10 AM EST	River Flood Warning	CHS	11 days
Nov 9, 9:58 AM EST	Areal Flood Warning	CHS	5 days
Nov 12, 4:08 AM EST	Dense Fog Advisory	CHS	4 hr
Nov 22, 6:28 PM EST	Frost Advisory	CHS	14 hr
Nov 23, 1:05 PM EST	Frost Advisory	CHS	19 hr
Nov 27, 12:55 AM EST	Dense Fog Advisory	CHS	8 hr
Nov 28, 2:56 AM EST	Freeze Watch	CHS	24 hr
Nov 28, 3:24 PM EST	Mesoscale Discussion	SPC	2 hr
Nov 29, 2:30 AM EST	Freeze Warning	CHS	31 hr
Dec 5, 3:34 PM EST	Cold Weather Advisory	CHS	17 hr
Dec 6, 2:50 PM EST	Cold Weather Advisory	CHS	18 hr
Dec 11, 12:00 PM EST	Special Weather Statement	CHS	60 min
Dec 11, 12:50 PM EST	Special Weather Statement	CHS	55 min
Dec 17, 2:20 AM EST	Dense Fog Advisory	CHS	4 hr
Dec 17, 2:55 PM EST	Dense Fog Advisory	CHS	19 hr
Dec 27, 8:11 PM EST	Dense Fog Advisory	CHS	9 hr
Dec 29, 6:02 AM EST	Tornado Watch	SPC	7 hr
Dec 29, 8:32 AM EST	Mesoscale Discussion	SPC	88 min
Dec 29, 9:25 AM EST	Special Weather Statement	CHS	50 min
Dec 29, 10:05 AM EST	Special Weather Statement	CHS	55 min

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
Tornado Warning	12
Severe Thunderstorm Watch	2
Tornado Watch	7
Mesoscale Discussion	29
Special Weather Statement	31
Flooding
Areal Flood Warning	4
Flash Flood Warning	4
River Flood Warning	5
Flood Watch	5
Areal Flood Advisory	14
Heat
Excessive Heat Watch	1
Heat Advisory	13
Cold
Freeze Warning	1
Freeze Watch	1
Cold Weather Advisory	2
Frost Advisory	2
Wind Chill Advisory	1
Wind and dust
Wind Advisory	5
Fog and smoke
Dense Fog Advisory	13
Tropical
Tropical Storm Warning	2
Tropical Storm Watch	1

The busiest days

Days with the most alerts issued, by UTC date.

Nearby

Alerts in force now Tornadoes on record Forecast The radar archive 2023 2025

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.