Alert archive / South Carolina / Colleton County

Weather alerts in Colleton County, South Carolina, 2015

182 weather alerts in 2015, 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 2015. Tap one for its archive.

Alerts: 182
Warnings: 62
Watches: 16
Advisories: 52
Busiest month: June41 alerts
Busiest day: July 2, 20158 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, 2015

	Warnings	With a report	False alarm ratio	Reports	Inside a warning	Mean lead time
Tornado warnings	0			0
Severe thunderstorm warnings	45	36	20%	42	71%	30 min
Flash flood warnings	4	4	0%	7	71%	852 min

Each office's whole area, 2015

	Warnings	With a report	False alarm ratio	Reports	Inside a warning	Mean lead time
NWS Charleston, SC: tornado warnings	5	3	40%	11	82%	9 min
NWS Charleston, SC: severe thunderstorm warnings	180	137	24%	503	79%	23 min
NWS Charleston, SC: flash flood warnings	21	17	19%	192	96%	473 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 3, 5:13 PM EST	Dense Fog Advisory	CHS	12 hr
Jan 4, 1:46 AM EST	Special Weather Statement	CHS	44 min
Jan 4, 10:28 AM EST	Mesoscale Discussion	SPC	92 min
Jan 4, 11:37 AM EST	Tornado Watch	SPC	5 hr
Jan 4, 1:39 PM EST	Mesoscale Discussion	SPC	96 min
Jan 7, 3:37 AM EST	Wind Chill Advisory	CHS	31 hr
Jan 12, 6:14 PM EST	Dense Fog Advisory	CHS	13 hr
Feb 2, 2:44 AM EST	Wind Advisory	CHS	15 hr
Feb 13, 2:28 PM EST	Fire Weather Watch	CHS	13 hr
Feb 14, 3:43 AM EST	Red Flag Warning	CHS	15 hr
Feb 18, 9:37 AM EST	Wind Chill Advisory	CHS	24 hr
Feb 18, 3:14 PM EST	Wind Advisory	CHS	6 hr
Feb 19, 3:14 PM EST	Wind Chill Advisory	CHS	19 hr
Feb 20, 12:51 AM EST	Wind Chill Advisory	CHS	9 hr
Feb 23, 3:27 AM EST	Freezing Rain Advisory	CHS	39 hr
Feb 27, 10:27 AM EST	River Flood Warning	CHS	11 days
Mar 2, 12:48 AM EST	Dense Fog Advisory	CHS	9 hr
Mar 3, 9:46 PM EST	Dense Fog Advisory	CHS	11 hr
Mar 5, 3:56 PM EST	Freeze Watch	CHS	12 hr
Mar 6, 3:42 AM EST	Freeze Warning	CHS	29 hr
Mar 6, 10:45 PM EST	Freeze Warning	CHS	10 hr
Mar 7, 3:23 AM EST	Freeze Watch	CHS	12 hr
Mar 7, 3:13 PM EST	Frost Advisory	CHS	17 hr
Mar 7, 3:13 PM EST	Freeze Warning	CHS	14 hr
Mar 14, 5:55 PM EDT	Special Weather Statement	CHS	35 min
Mar 14, 6:20 PM EDT	Special Weather Statement	CHS	25 min
Mar 23, 10:21 AM EDT	River Flood Warning	CHS	9 days
Mar 27, 3:42 PM EDT	Freeze Watch	CHS	11 hr
Mar 28, 3:09 AM EDT	Freeze Warning	CHS	30 hr
Apr 15, 3:23 PM EDT	Mesoscale Discussion	SPC	97 min
Apr 15, 3:40 PM EDT	Severe Thunderstorm Warning	CHS	26 min
Apr 19, 1:04 PM EDT	Tornado Watch	SPC	7 hr
Apr 19, 4:11 PM EDT	Mesoscale Discussion	SPC	2 hr
Apr 19, 4:36 PM EDT	Severe Thunderstorm Warning	CHS	54 min
Apr 19, 5:15 PM EDT	Severe Thunderstorm Warning	CHS	60 min
Apr 19, 5:43 PM EDT	Severe Thunderstorm Warning	CHS	36 min
Apr 21, 11:31 AM EDT	River Flood Warning	CHS	8 days
Apr 25, 6:07 PM EDT	Mesoscale Discussion	SPC	53 min
Apr 25, 6:28 PM EDT	Severe Thunderstorm Watch	SPC	4 hr
Apr 26, 1:44 PM EDT	Mesoscale Discussion	SPC	2 hr
May 11, 2:43 PM EDT	Severe Thunderstorm Warning	CHS	62 min
May 11, 3:26 PM EDT	Special Weather Statement	CHS	34 min
May 12, 1:55 PM EDT	Mesoscale Discussion	SPC	3 hr
May 12, 7:32 PM EDT	Severe Thunderstorm Warning	CHS	58 min
May 14, 6:46 AM EDT	Dense Fog Advisory	CHS	2 hr
May 20, 1:53 PM EDT	Special Weather Statement	CHS	37 min
May 20, 2:33 PM EDT	Special Weather Statement	CHS	27 min
Jun 4, 8:13 PM EDT	Special Weather Statement	CHS	32 min
Jun 7, 2:32 PM EDT	Special Weather Statement	CHS	28 min
Jun 9, 3:00 PM EDT	Special Weather Statement	CHS	30 min
Jun 9, 3:15 PM EDT	Severe Thunderstorm Warning	CHS	60 min
Jun 9, 4:34 PM EDT	Special Weather Statement	CHS	26 min
Jun 9, 4:54 PM EDT	Areal Flood Advisory	CHS	51 min
Jun 9, 5:51 PM EDT	Severe Thunderstorm Warning	CHS	54 min
Jun 9, 6:31 PM EDT	Areal Flood Advisory	CHS	59 min
Jun 9, 8:07 PM EDT	Severe Thunderstorm Warning	CHS	38 min
Jun 14, 3:34 PM EDT	Heat Advisory	CHS	26 hr
Jun 15, 3:37 PM EDT	Heat Advisory	CHS	26 hr
Jun 16, 3:28 PM EDT	Heat Advisory	CHS	28 hr
Jun 17, 4:05 PM EDT	Heat Advisory	CHS	27 hr
Jun 17, 6:00 PM EDT	Special Weather Statement	CHS	45 min
Jun 18, 3:28 PM EDT	Heat Advisory	CHS	28 hr
Jun 19, 8:54 PM EDT	Severe Thunderstorm Warning	CHS	29 min
Jun 21, 2:43 AM EDT	Heat Advisory	CHS	16 hr
Jun 21, 3:16 PM EDT	Heat Advisory	CHS	27 hr
Jun 22, 3:42 PM EDT	Heat Advisory	CHS	21 hr
Jun 22, 5:48 PM EDT	Severe Thunderstorm Warning	CHS	57 min
Jun 22, 6:49 PM EDT	Special Weather Statement	CHS	26 min
Jun 22, 6:58 PM EDT	Severe Thunderstorm Warning	CHS	62 min
Jun 22, 7:53 PM EDT	Severe Thunderstorm Warning	CHS	67 min
Jun 23, 3:48 PM EDT	Heat Advisory	CHS	27 hr
Jun 24, 10:25 PM EDT	Severe Thunderstorm Warning	CHS	50 min
Jun 24, 11:21 PM EDT	Special Weather Statement	CHS	24 min
Jun 25, 1:34 AM EDT	Severe Thunderstorm Warning	CHS	56 min
Jun 25, 6:01 PM EDT	Special Weather Statement	CHS	29 min
Jun 25, 6:05 PM EDT	Severe Thunderstorm Warning	CHS	55 min
Jun 25, 6:48 PM EDT	Areal Flood Advisory	CHS	57 min
Jun 26, 3:31 AM EDT	Heat Advisory	CHS	15 hr
Jun 28, 2:22 PM EDT	Special Weather Statement	CHS	23 min
Jun 28, 2:45 PM EDT	Special Weather Statement	CHS	30 min
Jun 28, 2:51 PM EDT	Severe Thunderstorm Warning	CHS	54 min
Jun 30, 1:01 PM EDT	Mesoscale Discussion	SPC	89 min
Jun 30, 1:53 PM EDT	Severe Thunderstorm Watch	SPC	6 hr
Jun 30, 4:33 PM EDT	Mesoscale Discussion	SPC	117 min
Jun 30, 5:26 PM EDT	Severe Thunderstorm Warning	CHS	64 min
Jun 30, 5:39 PM EDT	Severe Thunderstorm Warning	CHS	66 min
Jun 30, 6:11 PM EDT	Severe Thunderstorm Warning	CHS	64 min
Jun 30, 6:25 PM EDT	Severe Thunderstorm Warning	CHS	65 min
Jul 1, 11:43 PM EDT	Severe Thunderstorm Warning	CHS	42 min
Jul 2, 2:58 PM EDT	Mesoscale Discussion	SPC	92 min
Jul 2, 3:45 PM EDT	Severe Thunderstorm Watch	SPC	5 hr
Jul 2, 6:08 PM EDT	Mesoscale Discussion	SPC	97 min
Jul 2, 6:21 PM EDT	Severe Thunderstorm Warning	CHS	54 min
Jul 2, 6:28 PM EDT	Severe Thunderstorm Warning	CHS	62 min
Jul 2, 7:07 PM EDT	Severe Thunderstorm Warning	CHS	53 min
Jul 2, 7:57 PM EDT	Severe Thunderstorm Warning	CHS	63 min
Jul 3, 10:26 AM EDT	Mesoscale Discussion	SPC	3 hr
Jul 3, 11:05 AM EDT	Severe Thunderstorm Watch	SPC	6 hr
Jul 3, 1:17 PM EDT	Severe Thunderstorm Warning	CHS	58 min
Jul 3, 1:35 PM EDT	Mesoscale Discussion	SPC	55 min
Jul 3, 2:05 PM EDT	Severe Thunderstorm Warning	CHS	55 min
Jul 3, 2:13 PM EDT	Severe Thunderstorm Warning	CHS	62 min
Jul 3, 2:40 PM EDT	Severe Thunderstorm Warning	CHS	65 min
Jul 4, 6:36 PM EDT	Special Weather Statement	CHS	39 min
Jul 5, 2:45 PM EDT	Special Weather Statement	CHS	30 min
Jul 14, 1:13 PM EDT	Special Weather Statement	CHS	32 min
Jul 14, 2:24 PM EDT	Severe Thunderstorm Warning	CHS	26 min
Jul 18, 8:38 PM EDT	Severe Thunderstorm Warning	CHS	56 min
Jul 18, 8:51 PM EDT	Severe Thunderstorm Warning	CHS	54 min
Jul 19, 3:05 PM EDT	Special Weather Statement	CHS	25 min
Jul 19, 3:24 PM EDT	Severe Thunderstorm Warning	CHS	66 min
Jul 19, 3:32 PM EDT	Severe Thunderstorm Warning	CHS	58 min
Jul 19, 3:49 PM EDT	Severe Thunderstorm Warning	CHS	41 min
Jul 19, 4:31 PM EDT	Severe Thunderstorm Warning	CHS	44 min
Jul 19, 5:08 PM EDT	Special Weather Statement	CHS	52 min
Jul 21, 3:40 AM EDT	Heat Advisory	CHS	16 hr
Jul 21, 1:32 PM EDT	Severe Thunderstorm Warning	CHS	58 min
Jul 21, 2:28 PM EDT	Severe Thunderstorm Warning	CHS	47 min
Jul 23, 4:41 PM EDT	Severe Thunderstorm Warning	CHS	43 min
Jul 27, 5:28 AM EDT	Dense Fog Advisory	CHS	3 hr
Jul 31, 4:57 PM EDT	Special Weather Statement	CHS	33 min
Aug 1, 3:33 PM EDT	Areal Flood Advisory	CHS	57 min
Aug 4, 6:20 AM EDT	Dense Fog Advisory	CHS	3 hr
Aug 6, 1:54 PM EDT	Special Weather Statement	CHS	36 min
Aug 6, 2:15 PM EDT	Special Weather Statement	CHS	30 min
Aug 6, 2:44 PM EDT	Severe Thunderstorm Warning	CHS	61 min
Aug 6, 6:08 PM EDT	Mesoscale Discussion	SPC	67 min
Aug 6, 7:16 PM EDT	Special Weather Statement	CHS	29 min
Aug 11, 5:26 PM EDT	Severe Thunderstorm Warning	CHS	49 min
Aug 18, 4:38 PM EDT	Mesoscale Discussion	SPC	3 hr
Aug 22, 3:49 PM EDT	Severe Thunderstorm Warning	CHS	56 min
Aug 22, 4:28 PM EDT	Special Weather Statement	CHS	47 min
Aug 22, 4:37 PM EDT	Special Weather Statement	CHS	53 min
Aug 22, 5:25 PM EDT	Severe Thunderstorm Warning	CHS	65 min
Aug 23, 2:58 PM EDT	Special Weather Statement	CHS	47 min
Aug 28, 4:47 PM EDT	Areal Flood Advisory	CHS	88 min
Aug 30, 1:36 PM EDT	Areal Flood Advisory	CHS	84 min
Aug 31, 12:10 AM EDT	Special Weather Statement	CHS	20 min
Aug 31, 12:35 AM EDT	Special Weather Statement	CHS	25 min
Aug 31, 1:03 AM EDT	Special Weather Statement	CHS	27 min
Aug 31, 2:52 AM EDT	Areal Flood Advisory	CHS	83 min
Aug 31, 3:15 AM EDT	Mesoscale Discussion	SPC	3 hr
Sep 10, 5:42 PM EDT	Mesoscale Discussion	SPC	3 hr
Sep 10, 7:31 PM EDT	Special Weather Statement	CHS	59 min
Sep 10, 7:54 PM EDT	Severe Thunderstorm Warning	CHS	66 min
Sep 22, 2:00 AM EDT	Areal Flood Advisory	CHS	90 min
Sep 24, 9:45 PM EDT	Areal Flood Advisory	CHS	60 min
Sep 24, 10:44 PM EDT	Areal Flood Advisory	CHS	2 hr
Sep 24, 11:01 PM EDT	Flash Flood Watch	CHS	5 hr
Sep 25, 12:24 AM EDT	Areal Flood Advisory	CHS	96 min
Sep 25, 1:49 AM EDT	Mesoscale Discussion	SPC	86 min
Sep 25, 2:11 AM EDT	Areal Flood Advisory	CHS	94 min
Sep 29, 3:45 AM EDT	Dense Fog Advisory	CHS	5 hr
Oct 1, 4:15 AM EDT	Flash Flood Watch	CHS	5 days
Oct 3, 3:34 AM EDT	Flash Flood Warning	CHS	21 hr
Oct 3, 10:01 AM EDT	Areal Flood Advisory	CHS	59 min
Oct 3, 12:31 PM EDT	River Flood Warning	CHS	18 days
Oct 3, 8:00 PM EDT	Flash Flood Warning	CHS	6 hr
Oct 4, 12:05 AM EDT	Flash Flood Warning Emergency	CHS	6 hr
Oct 4, 5:42 AM EDT	Flash Flood Warning Emergency	CHS	16 hr
Oct 5, 3:49 AM EDT	Wind Advisory	CHS	10 hr
Oct 6, 6:00 PM EDT	Areal Flood Warning	CHS	6 days
Oct 10, 3:45 AM EDT	Flash Flood Watch	CHS	21 hr
Nov 2, 6:05 PM EST	Mesoscale Discussion	SPC	115 min
Nov 2, 8:55 PM EST	Special Weather Statement	CHS	65 min
Nov 3, 4:57 AM EST	Areal Flood Advisory	CHS	2 hr
Nov 4, 10:08 AM EST	River Flood Warning	CHS	17 days
Nov 6, 8:58 PM EST	Dense Fog Advisory	CHS	12 hr
Nov 8, 3:40 AM EST	Flash Flood Watch	CHS	36 hr
Nov 9, 5:00 AM EST	Areal Flood Advisory	CHS	90 min
Nov 9, 8:27 AM EST	Areal Flood Advisory	CHS	2 hr
Nov 14, 3:47 AM EST	Frost Advisory	CHS	29 hr
Nov 21, 3:36 PM EST	Freeze Watch	CHS	21 hr
Nov 22, 2:53 PM EST	Freeze Watch	CHS	13 hr
Nov 23, 3:25 AM EST	Freeze Warning	CHS	30 hr
Nov 24, 9:36 PM EST	Frost Advisory	CHS	8 hr
Dec 8, 3:30 AM EST	Dense Fog Advisory	CHS	7 hr
Dec 13, 11:50 PM EST	Dense Fog Advisory	CHS	3 hr
Dec 24, 5:33 PM EST	Dense Fog Advisory	CHS	18 hr
Dec 25, 3:11 PM EST	Dense Fog Advisory	CHS	21 hr
Dec 26, 3:31 PM EST	Dense Fog Advisory	CHS	15 hr
Dec 29, 8:44 PM EST	River Flood Warning	CHS	12 days

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	45
Severe Thunderstorm Watch	4
Tornado Watch	2
Mesoscale Discussion	19
Special Weather Statement	33
Flooding
Areal Flood Warning	1
Flash Flood Warning	4
River Flood Warning	6
Flash Flood Watch	4
Areal Flood Advisory	16
Winter
Freezing Rain Advisory	1
Heat
Heat Advisory	11
Cold
Freeze Warning	5
Freeze Watch	5
Frost Advisory	3
Wind Chill Advisory	4
Wind and dust
Wind Advisory	3
Fire
Red Flag Warning	1
Fire Weather Watch	1
Fog and smoke
Dense Fog Advisory	14

The busiest days

Days with the most alerts issued, by UTC date.

Nearby

Alerts in force now Tornadoes on record Forecast The radar archive 2014 2016

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.