Alert archive / Mississippi / Claiborne County

Weather alerts in Claiborne County, Mississippi, 2011

163 weather alerts in 2011, from the National Weather Service and the Storm Prediction Center. An alert counts here when it covered this county.

Claiborne County and its neighbors

Each county as a circle sized by its count in 2011. Tap one for its archive.

Alerts: 163
Warnings: 54
Watches: 31
Advisories: 22
Busiest month: April41 alerts
Busiest day: April 27, 201114 alerts

Over time

By month

Warning verification

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

3 of 8 tornado warnings covering Claiborne County in 2011 had a tornado report inside them.

Claiborne County, 2011

	Warnings	With a report	False alarm ratio	Reports	Inside a warning	Mean lead time
Tornado warnings	8	3	63%	0
Severe thunderstorm warnings	24	15	38%	12	50%	30 min
Flash flood warnings	4	4	0%	4	75%	73 min

Each office's whole area, 2011

	Warnings	With a report	False alarm ratio	Reports	Inside a warning	Mean lead time
NWS Jackson, MS: tornado warnings	225	65	71%	184	85%	26 min
NWS Jackson, MS: severe thunderstorm warnings	717	416	42%	1,089	75%	24 min
NWS Jackson, MS: flash flood warnings	164	99	40%	205	93%	110 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, Central Time. Each opens its own page with the text, the map, the radar and the sounding.

Issued	Product	Office	Lasted
Dec 31, 10:46 PM CST	Tornado Watch	SPC	5 hr
Dec 31, 11:22 PM CST	Severe Thunderstorm Warning	JAN	68 min
Jan 5, 10:53 PM CST	Dense Fog Advisory	JAN	11 hr
Jan 7, 3:30 PM CST	Winter Storm Watch	JAN	45 hr
Jan 8, 3:01 PM CST	Winter Storm Warning	JAN	37 hr
Jan 9, 12:45 PM CST	Winter Weather Advisory	JAN	23 hr
Jan 31, 2:38 PM CST	Wind Advisory	JAN	29 hr
Feb 1, 6:46 AM CST	Mesoscale Discussion	SPC	119 min
Feb 1, 8:40 AM CST	Tornado Watch	SPC	6 hr
Feb 1, 12:00 PM CST	Mesoscale Discussion	SPC	60 min
Feb 2, 3:54 PM CST	Winter Storm Watch	JAN	25 hr
Feb 2, 5:40 PM CST	Hard Freeze Warning	JAN	18 hr
Feb 3, 4:39 AM CST	Winter Storm Warning	JAN	31 hr
Feb 3, 12:58 PM CST	Mesoscale Discussion	SPC	5 hr
Feb 3, 10:36 PM CST	Mesoscale Discussion	SPC	6 hr
Feb 4, 5:28 AM CST	Mesoscale Discussion	SPC	6 hr
Feb 7, 3:21 PM CST	Winter Storm Watch	JAN	38 hr
Feb 8, 3:35 PM CST	Winter Storm Warning	JAN	32 hr
Feb 9, 2:17 PM CST	Hard Freeze Warning	JAN	45 hr
Feb 24, 8:11 PM CST	Mesoscale Discussion	SPC	64 min
Feb 24, 10:38 PM CST	Mesoscale Discussion	SPC	97 min
Feb 27, 4:06 AM CST	Wind Advisory	JAN	26 hr
Feb 28, 5:28 AM CST	Mesoscale Discussion	SPC	62 min
Mar 1, 4:50 PM CST	River Flood Advisory	JAN	6 days
Mar 7, 12:44 PM CST	River Flood Advisory	JAN	10 days
Mar 7, 6:02 PM CST	Flash Flood Watch	JAN	41 hr
Mar 8, 9:52 AM CST	Mesoscale Discussion	SPC	53 min
Mar 8, 12:54 PM CST	Mesoscale Discussion	SPC	36 min
Mar 8, 1:08 PM CST	Tornado Watch	SPC	9 hr
Mar 8, 5:46 PM CST	Mesoscale Discussion	SPC	59 min
Mar 8, 7:37 PM CST	Tornado Watch	SPC	7 hr
Mar 8, 9:40 PM CST	Mesoscale Discussion	SPC	65 min
Mar 8, 11:32 PM CST	Severe Thunderstorm Warning	JAN	73 min
Mar 9, 12:18 AM CST	Flash Flood Warning	JAN	3 hr
Mar 9, 12:40 AM CST	Severe Thunderstorm Warning	JAN	65 min
Mar 9, 1:28 AM CST	Mesoscale Discussion	SPC	92 min
Mar 9, 3:09 AM CST	Flash Flood Warning	JAN	2 hr
Mar 9, 6:28 AM CST	Mesoscale Discussion	SPC	92 min
Mar 14, 12:49 PM CDT	Mesoscale Discussion	SPC	56 min
Mar 15, 1:47 PM CDT	River Flood Warning	JAN	18 days
Mar 27, 7:18 AM CDT	Severe Thunderstorm Warning	JAN	42 min
Mar 27, 7:49 AM CDT	Severe Thunderstorm Warning	JAN	41 min
Mar 29, 4:19 AM CDT	Flash Flood Watch	JAN	26 hr
Mar 29, 3:17 PM CDT	Tornado Watch	SPC	7 hr
Mar 29, 6:26 PM CDT	Severe Thunderstorm Watch	SPC	8 hr
Mar 29, 7:00 PM CDT	Severe Thunderstorm Warning	JAN	60 min
Mar 29, 7:58 PM CDT	Severe Thunderstorm Warning	JAN	62 min
Mar 29, 10:23 PM CDT	Flash Flood Warning	JAN	2 hr
Mar 29, 11:39 PM CDT	Mesoscale Discussion	SPC	2 hr
Mar 30, 1:01 AM CDT	Severe Thunderstorm Warning	JAN	15 min
Mar 30, 4:34 AM CDT	Severe Thunderstorm Warning	JAN	29 min
Mar 30, 4:41 AM CDT	Severe Thunderstorm Warning	JAN	23 min
Apr 4, 12:05 AM CDT	Wind Advisory	JAN	22 hr
Apr 4, 10:53 AM CDT	Tornado Watch	SPC	7 hr
Apr 4, 2:52 PM CDT	Mesoscale Discussion	SPC	113 min
Apr 4, 3:43 PM CDT	Tornado Warning	JAN	48 min
Apr 4, 4:07 PM CDT	Tornado Warning	JAN	53 min
Apr 4, 4:39 PM CDT	Severe Thunderstorm Warning	JAN	66 min
Apr 11, 2:41 PM CDT	Special Weather Statement	JAN	59 min
Apr 12, 2:05 PM CDT	River Flood Advisory	JAN	8 days
Apr 15, 2:19 AM CDT	Tornado Watch	SPC	8 hr
Apr 15, 4:21 AM CDT	Mesoscale Discussion	SPC	84 min
Apr 15, 7:32 AM CDT	Tornado Watch	SPC	7 hr
Apr 15, 9:34 AM CDT	Severe Thunderstorm Warning	JAN	56 min
Apr 15, 10:26 AM CDT	Tornado Warning Emergency	JAN	64 min
Apr 15, 10:28 AM CDT	Mesoscale Discussion	SPC	2 hr
Apr 15, 12:27 PM CDT	Tornado Warning	JAN	63 min
Apr 15, 1:30 PM CDT	Mesoscale Discussion	SPC	2 hr
Apr 15, 2:41 PM CDT	Tornado Watch	SPC	7 hr
Apr 15, 3:15 PM CDT	Tornado Warning	JAN	60 min
Apr 15, 3:35 PM CDT	Mesoscale Discussion	SPC	85 min
Apr 20, 11:37 AM CDT	River Flood Warning	JAN	58 days
Apr 20, 1:02 PM CDT	Severe Thunderstorm Watch	SPC	7 hr
Apr 21, 10:00 AM CDT	Mesoscale Discussion	SPC	90 min
Apr 26, 3:11 AM CDT	Special Weather Statement	JAN	74 min
Apr 26, 3:22 AM CDT	Special Weather Statement	JAN	38 min
Apr 26, 4:04 AM CDT	Special Weather Statement	JAN	31 min
Apr 26, 4:18 AM CDT	Severe Thunderstorm Warning	JAN	42 min
Apr 26, 1:48 PM CDT	Wind Advisory	JAN	29 hr
Apr 26, 11:33 PM CDT	Mesoscale Discussion	SPC	117 min
Apr 27, 1:58 AM CDT	Tornado Warning	JAN	47 min
Apr 27, 2:26 AM CDT	Tornado Watch	SPC	6 hr
Apr 27, 2:29 AM CDT	Severe Thunderstorm Warning	JAN	46 min
Apr 27, 2:42 AM CDT	Severe Thunderstorm Warning	JAN	48 min
Apr 27, 3:14 AM CDT	Severe Thunderstorm Warning	JAN	61 min
Apr 27, 3:30 AM CDT	Severe Thunderstorm Warning	JAN	45 min
Apr 27, 4:15 AM CDT	Severe Thunderstorm Warning	JAN	45 min
Apr 27, 9:48 AM CDT	Mesoscale Discussion	SPC	27 min
Apr 27, 10:45 AM CDT	Mesoscale Discussion	SPC	90 min
Apr 27, 11:02 AM CDT	Tornado Watch PDS	SPC	8 hr
Apr 27, 1:34 PM CDT	Severe Thunderstorm Warning	JAN	56 min
Apr 27, 2:03 PM CDT	Tornado Warning	JAN	42 min
Apr 27, 2:42 PM CDT	Tornado Warning	JAN	48 min
May 2, 1:51 PM CDT	Mesoscale Discussion	SPC	2 hr
May 10, 4:51 PM CDT	Areal Flood Warning	JAN	6 days
May 12, 4:00 PM CDT	Flash Flood Watch	JAN	23 hr
May 17, 11:40 AM CDT	Areal Flood Warning	JAN	48 hr
May 19, 3:54 PM CDT	Areal Flood Warning	JAN	48 hr
May 20, 2:53 PM CDT	Flash Flood Watch	JAN	19 hr
May 21, 3:32 PM CDT	Areal Flood Warning	JAN	48 hr
May 23, 3:49 PM CDT	Areal Flood Warning	JAN	48 hr
May 25, 5:08 PM CDT	Areal Flood Warning	JAN	48 hr
May 25, 9:43 PM CDT	Tornado Watch	SPC	5 hr
May 27, 3:15 PM CDT	Areal Flood Warning	JAN	48 hr
Jun 2, 2:48 PM CDT	Heat Advisory	JAN	3 days
Jun 3, 5:32 PM CDT	Mesoscale Discussion	SPC	118 min
Jun 3, 7:04 PM CDT	Severe Thunderstorm Warning	JAN	41 min
Jun 3, 7:57 PM CDT	Severe Thunderstorm Warning	JAN	36 min
Jun 4, 6:03 PM CDT	Mesoscale Discussion	SPC	117 min
Jun 5, 6:13 PM CDT	Mesoscale Discussion	SPC	2 hr
Jun 7, 2:01 PM CDT	Mesoscale Discussion	SPC	59 min
Jun 7, 6:04 PM CDT	Mesoscale Discussion	SPC	116 min
Jun 9, 3:21 PM CDT	Special Weather Statement	JAN	29 min
Jun 13, 1:32 PM CDT	Mesoscale Discussion	SPC	58 min
Jun 13, 2:45 PM CDT	Severe Thunderstorm Watch	SPC	6 hr
Jun 13, 5:59 PM CDT	Mesoscale Discussion	SPC	61 min
Jun 13, 6:35 PM CDT	Special Weather Statement	JAN	30 min
Jun 17, 2:39 PM CDT	Heat Advisory	JAN	3 days
Jun 19, 10:11 AM CDT	Excessive Heat Warning	JAN	18 hr
Jun 21, 11:58 AM CDT	Mesoscale Discussion	SPC	62 min
Jun 22, 11:07 AM CDT	Special Weather Statement	JAN	28 min
Jun 28, 9:52 AM CDT	Mesoscale Discussion	SPC	113 min
Jun 28, 10:26 AM CDT	Severe Thunderstorm Watch	SPC	8 hr
Jun 28, 3:19 PM CDT	Mesoscale Discussion	SPC	116 min
Jun 30, 2:28 PM CDT	Mesoscale Discussion	SPC	3 hr
Jul 9, 4:39 AM CDT	Heat Advisory	JAN	6 days
Jul 25, 5:33 AM CDT	Flash Flood Watch	JAN	12 hr
Jul 31, 4:00 AM CDT	Heat Advisory	JAN	72 hr
Aug 1, 3:53 AM CDT	Excessive Heat Warning	JAN	5 days
Aug 3, 2:49 PM CDT	Heat Advisory	JAN	8 days
Aug 12, 2:05 PM CDT	Mesoscale Discussion	SPC	115 min
Aug 13, 1:57 PM CDT	Mesoscale Discussion	SPC	2 hr
Aug 13, 6:37 PM CDT	Severe Thunderstorm Warning	JAN	53 min
Aug 18, 1:04 PM CDT	Mesoscale Discussion	SPC	116 min
Aug 18, 4:24 PM CDT	Heat Advisory	JAN	3 days
Aug 20, 6:25 PM CDT	Severe Thunderstorm Warning	JAN	50 min
Aug 22, 3:13 AM CDT	Heat Advisory	JAN	4 days
Sep 2, 3:11 PM CDT	Flash Flood Watch	JAN	3 days
Sep 3, 3:57 PM CDT	Wind Advisory	JAN	52 hr
Sep 4, 5:05 AM CDT	Tornado Watch	SPC	11 hr
Sep 4, 9:50 AM CDT	Mesoscale Discussion	SPC	85 min
Sep 4, 3:47 PM CDT	Tornado Watch	SPC	6 hr
Sep 4, 10:21 PM CDT	Flash Flood Warning	JAN	3 hr
Sep 11, 5:00 PM CDT	Mesoscale Discussion	SPC	90 min
Sep 11, 7:03 PM CDT	Special Weather Statement	JAN	32 min
Sep 11, 7:39 PM CDT	Severe Thunderstorm Warning	JAN	66 min
Sep 29, 3:59 AM CDT	Dense Fog Advisory	JAN	5 hr
Oct 12, 1:56 PM CDT	Mesoscale Discussion	SPC	64 min
Oct 20, 4:54 PM CDT	Freeze Warning	JAN	15 hr
Oct 28, 2:46 PM CDT	Freeze Watch	JAN	27 hr
Nov 10, 4:08 AM CST	Freeze Warning	JAN	28 hr
Nov 20, 10:08 PM CST	Dense Fog Advisory	JAN	11 hr
Nov 22, 10:11 AM CST	Special Weather Statement	JAN	29 min
Nov 26, 3:44 PM CST	Mesoscale Discussion	SPC	91 min
Nov 26, 6:04 PM CST	Mesoscale Discussion	SPC	56 min
Dec 2, 1:33 PM CST	River Flood Advisory	JAN	20 days
Dec 12, 2:36 PM CST	Dense Fog Advisory	JAN	12 hr
Dec 20, 11:25 AM CST	Mesoscale Discussion	SPC	2 hr
Dec 22, 4:11 AM CST	Mesoscale Discussion	SPC	34 min
Dec 22, 4:36 AM CST	Tornado Watch	SPC	7 hr
Dec 22, 5:09 AM CST	Flash Flood Watch	JAN	7 hr
Dec 22, 11:56 AM CST	River Flood Advisory	JAN	10 min
Dec 25, 2:43 PM CST	Flood Watch	JAN	31 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	24
Tornado Warning	8
Severe Thunderstorm Watch	4
Tornado Watch	15
Mesoscale Discussion	47
Special Weather Statement	9
Flooding
Areal Flood Warning	7
Flash Flood Warning	4
River Flood Warning	2
Flash Flood Watch	7
Flood Watch	1
River Flood Advisory	5
Winter
Winter Storm Warning	3
Winter Storm Watch	3
Winter Weather Advisory	1
Heat
Excessive Heat Warning	2
Heat Advisory	7
Cold
Freeze Warning	2
Hard Freeze Warning	2
Freeze Watch	1
Wind and dust
Wind Advisory	5
Fog and smoke
Dense Fog Advisory	4

The busiest days

Days with the most alerts issued, by UTC date.

Nearby

Alerts in force now Tornadoes on record Forecast The radar archive 2010 2012

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.