Alert archive / Mississippi / Lawrence County

Weather alerts in Lawrence County, Mississippi, 2009

169 weather alerts in 2009, from the National Weather Service and the Storm Prediction Center. An alert counts here when it covered this county.

Lawrence County and its neighbors

Each county as a circle sized by its count in 2009. Tap one for its archive.

Alerts: 169
Warnings: 58
Watches: 32
Advisories: 33
Busiest month: March34 alerts
Busiest day: March 28, 200911 alerts

Over time

By month

Warning verification

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

2 of 7 tornado warnings covering Lawrence County in 2009 had a tornado report inside them.

Lawrence County, 2009

	Warnings	With a report	False alarm ratio	Reports	Inside a warning	Mean lead time
Tornado warnings	7	2	71%	0
Severe thunderstorm warnings	30	15	50%	9	100%	18 min
Flash flood warnings	7	6	14%	3	100%	53 min

Each office's whole area, 2009

	Warnings	With a report	False alarm ratio	Reports	Inside a warning	Mean lead time
NWS Jackson, MS: tornado warnings	126	21	83%	41	73%	18 min
NWS Jackson, MS: severe thunderstorm warnings	600	264	56%	647	83%	26 min
NWS Jackson, MS: flash flood warnings	191	100	48%	198	93%	107 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
Jan 2, 7:48 PM CST	Dense Fog Advisory	JAN	10 hr
Jan 3, 9:33 AM CST	Severe Thunderstorm Watch	SPC	6 hr
Jan 3, 12:32 PM CST	Mesoscale Discussion	SPC	88 min
Jan 5, 3:12 AM CST	Dense Fog Advisory	JAN	7 hr
Jan 6, 9:24 AM CST	Tornado Warning	JAN	51 min
Jan 6, 9:43 AM CST	Mesoscale Discussion	SPC	2 hr
Jan 7, 9:48 AM CST	River Flood Warning	JAN	5 days
Jan 14, 2:36 PM CST	Hard Freeze Watch	JAN	19 hr
Jan 15, 4:35 AM CST	Hard Freeze Warning	JAN	47 hr
Jan 15, 9:56 AM CST	Lake Wind Advisory	JAN	8 hr
Jan 23, 11:47 AM CST	Lake Wind Advisory	JAN	4 hr
Feb 1, 2:38 PM CST	Lake Wind Advisory	JAN	25 hr
Feb 10, 5:26 AM CST	Lake Wind Advisory	JAN	38 hr
Feb 18, 1:22 PM CST	Mesoscale Discussion	SPC	53 min
Feb 18, 4:58 PM CST	Mesoscale Discussion	SPC	92 min
Feb 18, 7:42 PM CST	Severe Thunderstorm Watch	SPC	5 hr
Feb 25, 7:40 PM CST	Lake Wind Advisory	JAN	26 hr
Feb 28, 3:52 PM CST	Lake Wind Advisory	JAN	26 hr
Mar 17, 10:07 AM CDT	River Flood Warning	JAN	23 hr
Mar 19, 4:44 AM CDT	Dense Fog Advisory	JAN	5 hr
Mar 23, 3:38 PM CDT	Lake Wind Advisory	JAN	27 hr
Mar 25, 10:01 AM CDT	River Flood Warning	JAN	13 days
Mar 25, 3:02 PM CDT	Flash Flood Watch	JAN	13 hr
Mar 25, 8:32 PM CDT	Mesoscale Discussion	SPC	88 min
Mar 25, 8:54 PM CDT	Tornado Watch	SPC	7 hr
Mar 25, 11:38 PM CDT	Mesoscale Discussion	SPC	97 min
Mar 26, 1:14 AM CDT	Tornado Warning	JAN	46 min
Mar 26, 1:28 AM CDT	Severe Thunderstorm Warning	JAN	32 min
Mar 26, 1:56 AM CDT	Severe Thunderstorm Warning	JAN	49 min
Mar 26, 4:07 AM CDT	Flash Flood Watch	JAN	24 hr
Mar 26, 8:36 AM CDT	Areal Flood Warning	JAN	6 hr
Mar 26, 5:36 PM CDT	Mesoscale Discussion	SPC	54 min
Mar 26, 5:56 PM CDT	Tornado Watch	SPC	7 hr
Mar 26, 10:25 PM CDT	Areal Flood Warning	JAN	6 hr
Mar 27, 3:53 AM CDT	Flash Flood Watch	JAN	26 hr
Mar 27, 4:16 PM CDT	Tornado Watch	SPC	4 hr
Mar 27, 6:18 PM CDT	Mesoscale Discussion	SPC	57 min
Mar 27, 7:49 PM CDT	Severe Thunderstorm Warning	JAN	56 min
Mar 27, 7:51 PM CDT	Tornado Watch	SPC	9 hr
Mar 27, 8:18 PM CDT	Flash Flood Warning	JAN	8 hr
Mar 27, 8:32 PM CDT	Severe Thunderstorm Warning	JAN	43 min
Mar 27, 11:06 PM CDT	Mesoscale Discussion	SPC	84 min
Mar 28, 12:02 AM CDT	Severe Thunderstorm Warning	JAN	43 min
Mar 28, 12:48 AM CDT	Severe Thunderstorm Warning	JAN	27 min
Mar 28, 1:33 AM CDT	Mesoscale Discussion	SPC	27 min
Mar 28, 2:01 AM CDT	Flash Flood Warning	JAN	88 min
Mar 28, 2:03 AM CDT	Severe Thunderstorm Warning	JAN	42 min
Mar 28, 2:20 AM CDT	Tornado Watch	SPC	3 hr
Mar 31, 8:58 AM CDT	Mesoscale Discussion	SPC	92 min
Mar 31, 9:37 AM CDT	Severe Thunderstorm Watch	SPC	7 hr
Mar 31, 11:54 AM CDT	Mesoscale Discussion	SPC	96 min
Mar 31, 2:44 PM CDT	Mesoscale Discussion	SPC	91 min
Apr 2, 8:01 AM CDT	Mesoscale Discussion	SPC	59 min
Apr 2, 9:24 AM CDT	Tornado Watch	SPC	7 hr
Apr 2, 11:37 AM CDT	Severe Thunderstorm Warning	JAN	53 min
Apr 2, 11:51 AM CDT	Mesoscale Discussion	SPC	84 min
Apr 2, 12:19 PM CDT	Severe Thunderstorm Warning	JAN	56 min
Apr 5, 12:43 PM CDT	Lake Wind Advisory	JAN	27 hr
Apr 5, 9:42 PM CDT	Freeze Watch	JAN	17 hr
Apr 6, 2:54 PM CDT	Freeze Warning	JAN	17 hr
Apr 8, 2:35 PM CDT	Lake Wind Advisory	JAN	39 hr
Apr 12, 3:45 AM CDT	Lake Wind Advisory	JAN	19 hr
Apr 12, 1:53 PM CDT	Tornado Watch	SPC	7 hr
Apr 12, 5:49 PM CDT	Mesoscale Discussion	SPC	86 min
Apr 12, 7:19 PM CDT	Severe Thunderstorm Warning	JAN	56 min
Apr 12, 7:28 PM CDT	Tornado Warning	JAN	62 min
Apr 12, 8:07 PM CDT	Mesoscale Discussion	SPC	53 min
Apr 12, 8:17 PM CDT	Flash Flood Warning	JAN	3 hr
Apr 12, 8:30 PM CDT	Tornado Watch	SPC	6 hr
Apr 12, 11:58 PM CDT	Areal Flood Warning	JAN	6 hr
Apr 13, 6:18 AM CDT	Dense Fog Advisory	JAN	81 min
Apr 13, 10:06 AM CDT	River Flood Warning	JAN	11 hr
Apr 13, 1:39 PM CDT	Mesoscale Discussion	SPC	66 min
Apr 13, 4:16 PM CDT	Severe Thunderstorm Watch	SPC	4 hr
Apr 13, 5:09 PM CDT	Severe Thunderstorm Warning	JAN	33 min
Apr 19, 12:43 PM CDT	Mesoscale Discussion	SPC	3 hr
Apr 29, 5:05 AM CDT	Dense Fog Advisory	JAN	4 hr
Apr 30, 6:05 AM CDT	Dense Fog Advisory	JAN	3 hr
May 3, 7:44 AM CDT	Severe Thunderstorm Watch	SPC	8 hr
May 3, 9:24 AM CDT	Mesoscale Discussion	SPC	66 min
May 3, 10:31 AM CDT	Severe Thunderstorm Warning	JAN	59 min
May 3, 10:57 AM CDT	Tornado Warning	JAN	44 min
May 4, 1:30 AM CDT	Mesoscale Discussion	SPC	3 hr
May 4, 3:22 AM CDT	Flash Flood Watch	JAN	12 hr
May 5, 5:43 PM CDT	Severe Thunderstorm Warning	JAN	47 min
May 5, 6:32 PM CDT	Severe Thunderstorm Warning	JAN	43 min
May 5, 6:50 PM CDT	Severe Thunderstorm Warning	JAN	40 min
May 6, 11:34 AM CDT	Mesoscale Discussion	SPC	86 min
May 6, 12:37 PM CDT	Severe Thunderstorm Watch	SPC	6 hr
May 6, 2:09 PM CDT	Severe Thunderstorm Warning	JAN	40 min
May 10, 7:29 PM CDT	Mesoscale Discussion	SPC	61 min
May 10, 7:50 PM CDT	Severe Thunderstorm Watch	SPC	5 hr
May 11, 2:20 PM CDT	Mesoscale Discussion	SPC	55 min
May 12, 5:48 PM CDT	Severe Thunderstorm Warning	JAN	17 min
May 12, 6:13 PM CDT	Severe Thunderstorm Warning	JAN	32 min
May 12, 6:42 PM CDT	Severe Thunderstorm Warning	JAN	48 min
May 12, 7:31 PM CDT	Severe Thunderstorm Warning	JAN	44 min
May 16, 5:03 PM CDT	Severe Thunderstorm Warning	JAN	42 min
May 24, 4:12 PM CDT	Severe Thunderstorm Warning	JAN	33 min
Jun 21, 4:04 AM CDT	Heat Advisory	JAN	4 days
Jun 24, 1:28 PM CDT	Mesoscale Discussion	SPC	3 hr
Jun 27, 4:48 AM CDT	Heat Advisory	JAN	38 hr
Jul 4, 3:20 AM CDT	Heat Advisory	JAN	24 hr
Jul 12, 8:25 PM CDT	Heat Advisory	JAN	32 hr
Jul 16, 5:45 PM CDT	Severe Thunderstorm Warning	JAN	30 min
Jul 26, 9:45 AM CDT	Mesoscale Discussion	SPC	2 hr
Jul 28, 11:25 AM CDT	Mesoscale Discussion	SPC	65 min
Jul 28, 2:18 PM CDT	Mesoscale Discussion	SPC	57 min
Jul 30, 2:02 PM CDT	Mesoscale Discussion	SPC	88 min
Aug 5, 7:57 AM CDT	Mesoscale Discussion	SPC	93 min
Aug 21, 4:44 PM CDT	Severe Thunderstorm Warning	JAN	46 min
Aug 21, 5:22 PM CDT	Flash Flood Warning	JAN	113 min
Aug 21, 5:27 PM CDT	Severe Thunderstorm Warning	JAN	48 min
Aug 21, 6:09 PM CDT	Severe Thunderstorm Warning	JAN	36 min
Sep 15, 11:14 AM CDT	Mesoscale Discussion	SPC	2 hr
Sep 23, 3:17 PM CDT	Flash Flood Warning	JAN	2 hr
Sep 24, 4:03 AM CDT	Flash Flood Watch	JAN	12 hr
Oct 8, 4:32 AM CDT	Dense Fog Advisory	JAN	4 hr
Oct 15, 7:08 AM CDT	Severe Thunderstorm Watch	SPC	9 hr
Oct 15, 10:58 AM CDT	River Flood Warning	JAN	24 hr
Oct 15, 12:31 PM CDT	Mesoscale Discussion	SPC	29 min
Oct 15, 3:15 PM CDT	Severe Thunderstorm Warning	JAN	60 min
Oct 15, 3:47 PM CDT	Severe Thunderstorm Warning	JAN	58 min
Oct 16, 11:24 AM CDT	River Flood Warning	JAN	4 days
Oct 21, 4:07 PM CDT	Flash Flood Watch	JAN	30 hr
Oct 22, 11:27 AM CDT	Mesoscale Discussion	SPC	93 min
Oct 22, 6:26 PM CDT	Mesoscale Discussion	SPC	34 min
Oct 22, 6:55 PM CDT	Tornado Watch	SPC	3 hr
Oct 27, 3:35 PM CDT	Dense Fog Advisory	JAN	18 hr
Oct 30, 10:22 AM CDT	Mesoscale Discussion	SPC	83 min
Oct 30, 12:22 PM CDT	Tornado Watch	SPC	8 hr
Oct 30, 1:44 PM CDT	Tornado Warning	JAN	31 min
Oct 30, 2:11 PM CDT	Mesoscale Discussion	SPC	94 min
Oct 30, 2:27 PM CDT	Tornado Warning	JAN	40 min
Nov 8, 2:51 PM CST	Lake Wind Advisory	JAN	50 hr
Nov 24, 3:03 AM CST	Dense Fog Advisory	JAN	6 hr
Nov 26, 4:39 AM CST	Freeze Warning	JAN	27 hr
Dec 2, 9:03 AM CST	Lake Wind Advisory	JAN	9 hr
Dec 3, 3:49 PM CST	Winter Storm Watch	JAN	12 hr
Dec 4, 4:00 AM CST	Winter Weather Advisory	JAN	23 hr
Dec 4, 12:13 PM CST	Mesoscale Discussion	SPC	4 hr
Dec 4, 5:22 PM CST	Mesoscale Discussion	SPC	6 hr
Dec 4, 9:05 PM CST	Winter Storm Warning	JAN	6 hr
Dec 4, 11:18 PM CST	Mesoscale Discussion	SPC	6 hr
Dec 7, 3:19 PM CST	Lake Wind Advisory	JAN	48 hr
Dec 8, 12:12 PM CST	Mesoscale Discussion	SPC	93 min
Dec 8, 1:25 PM CST	Tornado Watch	SPC	8 hr
Dec 8, 5:49 PM CST	Tornado Warning	JAN	39 min
Dec 8, 8:08 PM CST	Mesoscale Discussion	SPC	97 min
Dec 8, 8:33 PM CST	Tornado Watch	SPC	5 hr
Dec 13, 3:37 PM CST	Dense Fog Advisory	JAN	17 hr
Dec 13, 3:49 PM CST	Flash Flood Watch	JAN	47 hr
Dec 14, 9:03 AM CST	Dense Fog Advisory	JAN	57 min
Dec 14, 10:08 AM CST	Mesoscale Discussion	SPC	3 hr
Dec 14, 2:47 PM CST	Flash Flood Warning	JAN	5 hr
Dec 14, 3:18 PM CST	Flash Flood Warning	JAN	3 hr
Dec 14, 7:48 PM CST	River Flood Warning	JAN	5 days
Dec 15, 3:22 AM CST	Mesoscale Discussion	SPC	83 min
Dec 22, 3:28 PM CST	Lake Wind Advisory	JAN	43 hr
Dec 23, 4:31 AM CST	Flash Flood Watch	JAN	37 hr
Dec 23, 3:03 PM CST	Wind Advisory	JAN	36 hr
Dec 24, 9:34 AM CST	Mesoscale Discussion	SPC	56 min
Dec 24, 10:13 AM CST	Mesoscale Discussion	SPC	62 min
Dec 24, 10:37 AM CST	Tornado Watch	SPC	7 hr
Dec 24, 12:37 PM CST	Severe Thunderstorm Warning	JAN	53 min
Dec 24, 12:57 PM CST	Severe Thunderstorm Warning	JAN	48 min
Dec 24, 1:14 PM CST	Mesoscale Discussion	SPC	61 min
Dec 24, 5:00 PM CST	Lake Wind Advisory	JAN	21 hr
Dec 30, 5:30 PM CST	Dense Fog Advisory	JAN	15 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	30
Tornado Warning	7
Severe Thunderstorm Watch	8
Tornado Watch	13
Mesoscale Discussion	46
Flooding
Areal Flood Warning	3
Flash Flood Warning	7
River Flood Warning	7
Flash Flood Watch	8
Winter
Winter Storm Warning	1
Winter Storm Watch	1
Winter Weather Advisory	1
Heat
Heat Advisory	4
Cold
Freeze Warning	2
Hard Freeze Warning	1
Freeze Watch	1
Hard Freeze Watch	1
Wind and dust
Lake Wind Advisory	15
Wind Advisory	1
Fog and smoke
Dense Fog Advisory	12

The busiest days

Days with the most alerts issued, by UTC date.

Nearby

Alerts in force now Tornadoes on record Forecast The radar archive 2008 2010

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.