Alert archive / South Carolina / Colleton County

Weather alerts in Colleton County, South Carolina, 2010

203 weather alerts in 2010, 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 2010. Tap one for its archive.

Alerts: 203
Warnings: 67
Watches: 16
Advisories: 62
Busiest month: July69 alerts
Busiest day: October 25, 201016 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 Colleton County in 2010 had a tornado report inside them.

Colleton County, 2010

	Warnings	With a report	False alarm ratio	Reports	Inside a warning	Mean lead time
Tornado warnings	2	0	100%	0
Severe thunderstorm warnings	57	33	42%	33	79%	30 min
Flash flood warnings	0			0

Each office's whole area, 2010

	Warnings	With a report	False alarm ratio	Reports	Inside a warning	Mean lead time
NWS Charleston, SC: tornado warnings	10	1	90%	1	100%	8 min
NWS Charleston, SC: severe thunderstorm warnings	211	128	39%	292	77%	23 min
NWS Charleston, SC: flash flood warnings	13	8	38%	21	76%	44 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 17, 12:22 AM EST	Mesoscale Discussion	SPC	83 min
Jan 22, 10:28 AM EST	River Flood Warning	CHS	26 days
Jan 24, 9:59 PM EST	Wind Advisory	CHS	7 hr
Jan 24, 11:33 PM EST	Tornado Watch	SPC	7 hr
Jan 24, 11:40 PM EST	Mesoscale Discussion	SPC	2 hr
Jan 25, 1:06 AM EST	Severe Thunderstorm Warning	CHS	54 min
Jan 30, 3:59 PM EST	Winter Weather Advisory	CHS	12 hr
Feb 5, 4:41 AM EST	Flash Flood Watch	CHS	13 hr
Feb 9, 3:31 PM EST	Wind Advisory	CHS	25 hr
Feb 11, 3:08 PM EST	Winter Storm Watch	CHS	12 hr
Feb 12, 3:17 AM EST	Winter Storm Warning	CHS	25 hr
Feb 13, 5:09 PM EST	Winter Weather Advisory	CHS	16 hr
Feb 22, 9:27 PM EST	Dense Fog Advisory	CHS	13 hr
Mar 2, 9:46 PM EST	Winter Weather Advisory	CHS	6 hr
Mar 21, 9:29 PM EDT	Mesoscale Discussion	SPC	3 hr
Mar 29, 12:25 AM EDT	Mesoscale Discussion	SPC	95 min
Apr 8, 7:23 PM EDT	Mesoscale Discussion	SPC	2 hr
May 3, 3:08 PM EDT	Tornado Watch	SPC	7 hr
May 3, 6:11 PM EDT	Mesoscale Discussion	SPC	64 min
May 5, 3:20 AM EDT	Dense Fog Advisory	CHS	7 hr
May 6, 3:03 AM EDT	Dense Fog Advisory	CHS	7 hr
May 23, 6:25 PM EDT	Severe Thunderstorm Warning	CHS	65 min
May 23, 6:33 PM EDT	Severe Thunderstorm Warning	CHS	57 min
May 23, 7:09 PM EDT	Severe Thunderstorm Warning	CHS	66 min
May 23, 7:28 PM EDT	Severe Thunderstorm Warning	CHS	36 min
May 31, 9:12 AM EDT	Special Weather Statement	CHS	48 min
Jun 5, 8:57 PM EDT	Special Weather Statement	CHS	33 min
Jun 5, 9:19 PM EDT	Special Weather Statement	CHS	26 min
Jun 13, 3:59 AM EDT	Heat Advisory	CHS	15 hr
Jun 13, 3:22 PM EDT	Heat Advisory	CHS	29 hr
Jun 14, 2:52 PM EDT	Heat Advisory	CHS	29 hr
Jun 15, 12:58 PM EDT	Special Weather Statement	CHS	47 min
Jun 15, 2:36 PM EDT	Severe Thunderstorm Warning	CHS	54 min
Jun 17, 4:55 PM EDT	Severe Thunderstorm Warning	CHS	65 min
Jun 17, 5:40 PM EDT	Special Weather Statement	CHS	80 min
Jun 18, 2:03 PM EDT	Special Weather Statement	CHS	72 min
Jun 19, 3:01 PM EDT	Severe Thunderstorm Warning	CHS	59 min
Jun 19, 3:42 PM EDT	Severe Thunderstorm Warning	CHS	63 min
Jun 20, 6:31 PM EDT	Special Weather Statement	CHS	44 min
Jun 20, 7:09 PM EDT	Special Weather Statement	CHS	66 min
Jun 20, 7:29 PM EDT	Areal Flood Advisory	CHS	91 min
Jun 21, 2:23 PM EDT	Severe Thunderstorm Warning	CHS	52 min
Jun 21, 3:25 PM EDT	Severe Thunderstorm Warning	CHS	65 min
Jun 24, 3:59 AM EDT	Heat Advisory	CHS	15 hr
Jun 24, 7:41 PM EDT	Special Weather Statement	CHS	34 min
Jun 25, 4:09 AM EDT	Heat Advisory	CHS	13 hr
Jun 25, 2:29 PM EDT	Special Weather Statement	CHS	31 min
Jun 25, 2:39 PM EDT	Severe Thunderstorm Warning	CHS	66 min
Jun 25, 3:10 PM EDT	Mesoscale Discussion	SPC	95 min
Jun 25, 3:41 PM EDT	Severe Thunderstorm Warning	CHS	36 min
Jun 25, 3:45 PM EDT	Severe Thunderstorm Warning	CHS	60 min
Jun 25, 4:44 PM EDT	Severe Thunderstorm Warning	CHS	61 min
Jun 26, 3:19 AM EDT	Heat Advisory	CHS	12 hr
Jun 27, 1:29 PM EDT	Heat Advisory	CHS	6 hr
Jun 27, 4:11 PM EDT	Special Weather Statement	CHS	34 min
Jul 9, 3:46 AM EDT	Heat Advisory	CHS	16 hr
Jul 10, 12:31 PM EDT	Heat Advisory	CHS	5 hr
Jul 10, 3:11 PM EDT	Mesoscale Discussion	SPC	94 min
Jul 10, 5:20 PM EDT	Severe Thunderstorm Warning	CHS	40 min
Jul 10, 11:30 PM EDT	Areal Flood Advisory	CHS	90 min
Jul 11, 3:32 AM EDT	Heat Advisory	CHS	14 hr
Jul 11, 1:30 PM EDT	Mesoscale Discussion	SPC	90 min
Jul 11, 2:00 PM EDT	Severe Thunderstorm Watch	SPC	7 hr
Jul 11, 5:46 PM EDT	Mesoscale Discussion	SPC	59 min
Jul 12, 3:09 AM EDT	Heat Advisory	CHS	15 hr
Jul 12, 12:42 PM EDT	Mesoscale Discussion	SPC	93 min
Jul 12, 1:14 PM EDT	Severe Thunderstorm Watch	SPC	7 hr
Jul 12, 4:10 PM EDT	Mesoscale Discussion	SPC	95 min
Jul 12, 4:18 PM EDT	Severe Thunderstorm Warning	CHS	57 min
Jul 12, 5:02 PM EDT	Severe Thunderstorm Warning	CHS	58 min
Jul 12, 5:07 PM EDT	Severe Thunderstorm Warning	CHS	53 min
Jul 13, 2:43 AM EDT	Heat Advisory	CHS	14 hr
Jul 13, 1:17 PM EDT	Severe Thunderstorm Watch	SPC	6 hr
Jul 13, 5:43 PM EDT	Mesoscale Discussion	SPC	62 min
Jul 14, 3:10 AM EDT	Heat Advisory	CHS	11 hr
Jul 14, 5:20 PM EDT	Special Weather Statement	CHS	25 min
Jul 15, 4:19 PM EDT	Special Weather Statement	CHS	26 min
Jul 15, 4:41 PM EDT	Special Weather Statement	CHS	34 min
Jul 17, 8:23 PM EDT	Special Weather Statement	CHS	37 min
Jul 20, 3:34 AM EDT	Heat Advisory	CHS	14 hr
Jul 20, 3:07 PM EDT	Severe Thunderstorm Warning	CHS	38 min
Jul 20, 4:24 PM EDT	Special Weather Statement	CHS	66 min
Jul 20, 4:32 PM EDT	Severe Thunderstorm Warning	CHS	58 min
Jul 21, 3:36 AM EDT	Heat Advisory	CHS	14 hr
Jul 21, 4:49 PM EDT	Severe Thunderstorm Warning	CHS	56 min
Jul 21, 5:21 PM EDT	Severe Thunderstorm Warning	CHS	54 min
Jul 21, 5:32 PM EDT	Severe Thunderstorm Warning	CHS	43 min
Jul 21, 5:54 PM EDT	Severe Thunderstorm Warning	CHS	47 min
Jul 21, 5:59 PM EDT	Severe Thunderstorm Warning	CHS	61 min
Jul 22, 3:28 AM EDT	Heat Advisory	CHS	17 hr
Jul 22, 7:39 PM EDT	Heat Advisory	CHS	24 hr
Jul 23, 3:27 PM EDT	Heat Advisory	CHS	29 hr
Jul 24, 3:55 PM EDT	Heat Advisory	CHS	28 hr
Jul 25, 2:27 PM EDT	Excessive Heat Warning	CHS	6 hr
Jul 25, 4:07 PM EDT	Heat Advisory	CHS	27 hr
Jul 26, 3:48 AM EDT	Excessive Heat Warning	CHS	15 hr
Jul 26, 2:47 PM EDT	Special Weather Statement	CHS	43 min
Jul 26, 2:53 PM EDT	Severe Thunderstorm Watch	SPC	6 hr
Jul 26, 3:02 PM EDT	Severe Thunderstorm Warning	CHS	43 min
Jul 26, 3:11 PM EDT	Severe Thunderstorm Warning	CHS	54 min
Jul 26, 3:32 PM EDT	Severe Thunderstorm Warning	CHS	58 min
Jul 26, 3:45 PM EDT	Heat Advisory	CHS	28 hr
Jul 26, 3:56 PM EDT	Severe Thunderstorm Warning	CHS	64 min
Jul 26, 4:02 PM EDT	Severe Thunderstorm Warning	CHS	34 min
Jul 26, 4:26 PM EDT	Severe Thunderstorm Warning	CHS	29 min
Jul 27, 2:29 PM EDT	Mesoscale Discussion	SPC	61 min
Jul 27, 6:14 PM EDT	Special Weather Statement	CHS	31 min
Jul 27, 7:19 PM EDT	Severe Thunderstorm Warning	CHS	56 min
Jul 27, 7:27 PM EDT	Severe Thunderstorm Warning	CHS	63 min
Jul 27, 7:37 PM EDT	Severe Thunderstorm Warning	CHS	38 min
Jul 27, 8:04 PM EDT	Severe Thunderstorm Warning	CHS	56 min
Jul 27, 8:15 PM EDT	Severe Thunderstorm Warning	CHS	48 min
Jul 28, 4:04 AM EDT	Heat Advisory	CHS	14 hr
Jul 28, 3:46 PM EDT	Heat Advisory	CHS	28 hr
Jul 28, 10:23 PM EDT	Severe Thunderstorm Warning	CHS	67 min
Jul 29, 12:10 AM EDT	Special Weather Statement	CHS	50 min
Jul 29, 3:15 PM EDT	Excessive Heat Watch	CHS	12 hr
Jul 30, 3:09 AM EDT	Excessive Heat Warning	CHS	17 hr
Jul 30, 3:07 PM EDT	Heat Advisory	CHS	27 hr
Jul 31, 1:31 PM EDT	Severe Thunderstorm Watch	SPC	8 hr
Jul 31, 3:21 PM EDT	Mesoscale Discussion	SPC	54 min
Jul 31, 5:23 PM EDT	Severe Thunderstorm Warning	CHS	67 min
Jul 31, 6:28 PM EDT	Areal Flood Advisory	CHS	2 hr
Jul 31, 7:00 PM EDT	Mesoscale Discussion	SPC	60 min
Aug 2, 3:13 PM EDT	Heat Advisory	CHS	25 hr
Aug 3, 2:50 PM EDT	Areal Flood Advisory	CHS	33 min
Aug 3, 3:39 PM EDT	Heat Advisory	CHS	28 hr
Aug 4, 4:33 PM EDT	Heat Advisory	CHS	26 hr
Aug 5, 4:07 PM EDT	Heat Advisory	CHS	27 hr
Aug 6, 1:25 PM EDT	Severe Thunderstorm Watch	SPC	10 hr
Aug 6, 4:30 PM EDT	Heat Advisory	CHS	23 hr
Aug 6, 4:59 PM EDT	Mesoscale Discussion	SPC	61 min
Aug 6, 7:02 PM EDT	Mesoscale Discussion	SPC	58 min
Aug 6, 7:06 PM EDT	Severe Thunderstorm Warning	CHS	54 min
Aug 6, 7:48 PM EDT	Severe Thunderstorm Warning	CHS	57 min
Aug 6, 8:27 PM EDT	Severe Thunderstorm Warning	CHS	63 min
Aug 12, 3:36 AM EDT	Heat Advisory	CHS	15 hr
Aug 13, 3:14 AM EDT	Heat Advisory	CHS	16 hr
Aug 13, 4:00 PM EDT	Mesoscale Discussion	SPC	90 min
Aug 13, 6:36 PM EDT	Severe Thunderstorm Warning	CHS	54 min
Aug 13, 6:44 PM EDT	Severe Thunderstorm Warning	CHS	61 min
Aug 13, 7:21 PM EDT	Areal Flood Advisory	CHS	90 min
Aug 13, 8:10 PM EDT	Special Weather Statement	CHS	65 min
Aug 14, 8:34 PM EDT	Areal Flood Advisory	CHS	51 min
Aug 15, 12:44 PM EDT	Areal Flood Advisory	CHS	91 min
Aug 15, 2:16 PM EDT	Areal Flood Advisory	CHS	87 min
Aug 15, 7:09 PM EDT	Areal Flood Advisory	CHS	81 min
Aug 15, 8:27 PM EDT	Areal Flood Advisory	CHS	98 min
Aug 18, 3:25 PM EDT	Heat Advisory	CHS	27 hr
Aug 18, 7:36 PM EDT	Severe Thunderstorm Warning	CHS	39 min
Aug 20, 3:06 AM EDT	Heat Advisory	CHS	16 hr
Aug 20, 4:24 PM EDT	Severe Thunderstorm Warning	CHS	39 min
Aug 21, 5:08 AM EDT	Areal Flood Advisory	CHS	82 min
Aug 21, 6:23 AM EDT	Areal Flood Advisory	CHS	82 min
Aug 21, 4:00 PM EDT	Heat Advisory	CHS	27 hr
Aug 21, 6:08 PM EDT	Special Weather Statement	CHS	52 min
Aug 21, 6:20 PM EDT	Severe Thunderstorm Warning	CHS	55 min
Aug 22, 4:25 PM EDT	Severe Thunderstorm Warning	CHS	45 min
Aug 23, 3:49 AM EDT	Heat Advisory	CHS	12 hr
Aug 26, 1:48 PM EDT	Severe Thunderstorm Warning	CHS	47 min
Aug 26, 2:19 PM EDT	Mesoscale Discussion	SPC	86 min
Sep 11, 1:58 PM EDT	Special Weather Statement	CHS	47 min
Sep 18, 6:04 PM EDT	Severe Thunderstorm Warning	CHS	38 min
Sep 18, 7:11 PM EDT	Special Weather Statement	CHS	34 min
Sep 21, 4:27 PM EDT	Special Weather Statement	CHS	33 min
Sep 26, 1:29 PM EDT	Special Weather Statement	CHS	31 min
Sep 26, 1:42 PM EDT	Severe Thunderstorm Warning	CHS	27 min
Sep 26, 6:04 PM EDT	Tornado Warning	CHS	41 min
Sep 26, 6:44 PM EDT	Tornado Warning	CHS	23 min
Sep 26, 6:46 PM EDT	Severe Thunderstorm Warning	CHS	31 min
Sep 27, 4:02 AM EDT	Mesoscale Discussion	SPC	2 hr
Sep 27, 5:26 AM EDT	Areal Flood Advisory	CHS	94 min
Sep 27, 8:53 AM EDT	Mesoscale Discussion	SPC	97 min
Oct 9, 6:04 AM EDT	Dense Fog Advisory	CHS	3 hr
Oct 14, 2:48 PM EDT	Fire Weather Watch	CHS	13 hr
Oct 15, 4:14 AM EDT	Red Flag Warning	CHS	14 hr
Oct 25, 9:56 AM EDT	Mesoscale Discussion	SPC	2 hr
Oct 25, 11:36 AM EDT	Severe Thunderstorm Watch	SPC	8 hr
Oct 25, 2:44 PM EDT	Severe Thunderstorm Warning	CHS	46 min
Oct 25, 3:06 PM EDT	Tornado Watch	SPC	5 hr
Oct 25, 3:13 PM EDT	Special Weather Statement	CHS	32 min
Oct 25, 3:42 PM EDT	Mesoscale Discussion	SPC	63 min
Oct 25, 3:50 PM EDT	Special Weather Statement	CHS	40 min
Oct 25, 4:07 PM EDT	Severe Thunderstorm Warning	CHS	53 min
Oct 25, 5:11 PM EDT	Special Weather Statement	CHS	34 min
Oct 25, 5:29 PM EDT	Severe Thunderstorm Warning	CHS	61 min
Oct 25, 6:00 PM EDT	Special Weather Statement	CHS	30 min
Oct 25, 6:28 PM EDT	Special Weather Statement	CHS	32 min
Oct 25, 6:36 PM EDT	Mesoscale Discussion	SPC	54 min
Oct 25, 7:03 PM EDT	Special Weather Statement	CHS	57 min
Oct 25, 7:34 PM EDT	Severe Thunderstorm Warning	CHS	56 min
Oct 25, 7:35 PM EDT	Severe Thunderstorm Warning	CHS	55 min
Oct 28, 1:19 AM EDT	Mesoscale Discussion	SPC	56 min
Nov 4, 5:08 AM EDT	Dense Fog Advisory	CHS	5 hr
Nov 5, 3:21 PM EDT	Freeze Watch	CHS	12 hr
Nov 5, 10:08 PM EDT	Frost Advisory	CHS	11 hr
Nov 6, 3:37 AM EDT	Freeze Warning	CHS	29 hr
Nov 16, 1:24 PM EST	Wind Advisory	CHS	4 hr
Nov 22, 10:36 PM EST	Dense Fog Advisory	CHS	11 hr
Nov 30, 2:15 PM EST	Mesoscale Discussion	SPC	2 hr
Dec 25, 4:03 AM EST	Winter Storm Watch	CHS	10 hr
Dec 25, 2:14 PM EST	Winter Storm Warning	CHS	26 hr
Dec 25, 2:14 PM EST	Winter Weather Advisory	CHS	33 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	57
Tornado Warning	2
Severe Thunderstorm Watch	7
Tornado Watch	3
Mesoscale Discussion	27
Special Weather Statement	31
Flooding
River Flood Warning	1
Flash Flood Watch	1
Areal Flood Advisory	13
Winter
Winter Storm Warning	2
Winter Storm Watch	2
Winter Weather Advisory	4
Heat
Excessive Heat Warning	3
Excessive Heat Watch	1
Heat Advisory	35
Cold
Freeze Warning	1
Freeze Watch	1
Frost Advisory	1
Wind and dust
Wind Advisory	3
Fire
Red Flag Warning	1
Fire Weather Watch	1
Fog and smoke
Dense Fog Advisory	6

The busiest days

Days with the most alerts issued, by UTC date.

Nearby

Alerts in force now Tornadoes on record Forecast The radar archive 2009 2011

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.