Alert archive / Mississippi / Madison County

Weather alerts in Madison County, Mississippi, 2020

171 weather alerts in 2020, from the National Weather Service and the Storm Prediction Center. An alert counts here when it covered this county.

Madison County and its neighbors

Each county as a circle sized by its count in 2020. Tap one for its archive.

Alerts: 171
Warnings: 76
Watches: 21
Advisories: 20
Busiest month: April26 alerts
Busiest day: April 12, 202010 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 3 tornado warnings covering Madison County in 2020 had a tornado report inside them; 1 of 1 tornado reports fell inside a warning, on average 28 minutes after it went out.

Madison County, 2020

	Warnings	With a report	False alarm ratio	Reports	Inside a warning	Mean lead time
Tornado warnings	3	3	0%	1	100%	28 min
Severe thunderstorm warnings	48	31	35%	31	71%	21 min
Flash flood warnings	12	9	25%	7	86%	67 min

Each office's whole area, 2020

	Warnings	With a report	False alarm ratio	Reports	Inside a warning	Mean lead time
NWS Jackson, MS: tornado warnings	60	37	38%	149	85%	26 min
NWS Jackson, MS: severe thunderstorm warnings	423	268	37%	898	83%	26 min
NWS Jackson, MS: flash flood warnings	108	73	32%	276	85%	87 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 1, 3:07 AM CST	Flash Flood Watch	JAN	57 hr
Jan 2, 2:15 PM CST	Mesoscale Discussion	SPC	3 hr
Jan 2, 5:04 PM CST	Flash Flood Warning	JAN	3 hr
Jan 2, 8:35 PM CST	Areal Flood Warning	JAN	3 hr
Jan 4, 10:17 AM CST	River Flood Warning	JAN	5 days
Jan 9, 2:27 PM CST	Wind Advisory	JAN	48 hr
Jan 11, 2:22 AM CST	Mesoscale Discussion	SPC	53 min
Jan 11, 2:37 AM CST	Tornado Watch	SPC	8 hr
Jan 11, 4:31 AM CST	Mesoscale Discussion	SPC	59 min
Jan 11, 6:13 AM CST	Severe Thunderstorm Warning	JAN	62 min
Jan 11, 6:27 AM CST	Severe Thunderstorm Warning	JAN	63 min
Jan 11, 7:16 AM CST	Severe Thunderstorm Warning	JAN	59 min
Jan 11, 7:39 AM CST	Mesoscale Discussion	SPC	96 min
Jan 11, 8:14 AM CST	Severe Thunderstorm Warning	JAN	61 min
Jan 13, 8:05 AM CST	Dense Fog Advisory	JAN	3 hr
Jan 14, 3:00 AM CST	Flash Flood Watch	JAN	21 hr
Jan 14, 7:28 AM CST	Special Weather Statement	JAN	47 min
Jan 14, 9:39 AM CST	Flash Flood Warning Emergency	JAN	3 hr
Jan 14, 12:45 PM CST	Flash Flood Warning EmergencyCatastrophic damage threat	JAN	90 min
Jan 14, 2:07 PM CST	River Flood Warning	JAN	7 days
Jan 14, 2:12 PM CST	Areal Flood Warning	JAN	9 hr
Jan 28, 12:33 AM CST	Dense Fog Advisory	JAN	10 hr
Jan 30, 4:11 AM CST	Dense Fog Advisory	JAN	5 hr
Feb 5, 4:29 AM CST	Severe Thunderstorm Warning	JAN	46 min
Feb 5, 10:28 AM CST	Mesoscale Discussion	SPC	92 min
Feb 5, 11:49 AM CST	Tornado Watch	SPC	6 hr
Feb 5, 1:39 PM CST	Mesoscale Discussion	SPC	96 min
Feb 5, 3:41 PM CST	Mesoscale Discussion	SPC	64 min
Feb 5, 3:55 PM CST	Tornado Warning	JAN	65 min
Feb 5, 4:41 PM CST	Severe Thunderstorm Warning	JAN	49 min
Feb 5, 5:16 PM CST	Severe Thunderstorm Warning	JAN	44 min
Feb 6, 9:45 AM CST	River Flood Warning	JAN	37 days
Feb 9, 4:42 AM CST	Flash Flood Watch	JAN	47 hr
Feb 10, 8:56 AM CST	River Flood Warning	JAN	9 days
Feb 10, 12:26 PM CST	Severe Thunderstorm Warning	JAN	49 min
Feb 10, 12:39 PM CST	Mesoscale Discussion	SPC	2 hr
Feb 10, 12:55 PM CST	Flash Flood Warning	JAN	7 hr
Feb 10, 1:00 PM CST	Severe Thunderstorm Warning	JAN	45 min
Feb 10, 1:36 PM CST	Flash Flood Warning	JAN	3 hr
Feb 10, 2:10 PM CST	Flash Flood Warning	JAN	3 hr
Feb 10, 8:49 PM CST	Tornado Warning	JAN	56 min
Feb 11, 2:05 AM CST	Areal Flood Warning	JAN	6 hr
Feb 11, 3:34 AM CST	Flash Flood Watch	JAN	49 hr
Feb 12, 1:46 PM CST	Mesoscale Discussion	SPC	119 min
Feb 17, 2:14 PM CST	Flash Flood Watch	JAN	31 hr
Feb 19, 2:59 PM CST	Flash Flood Watch	JAN	18 hr
Mar 3, 2:52 AM CST	Mesoscale Discussion	SPC	2 hr
Mar 3, 2:38 PM CST	Flash Flood Watch	JAN	39 hr
Mar 4, 1:19 AM CST	Mesoscale Discussion	SPC	2 hr
Mar 4, 1:53 AM CST	Tornado Watch	SPC	8 hr
Mar 4, 2:06 AM CST	Severe Thunderstorm Warning	JAN	54 min
Mar 4, 2:28 AM CST	Severe Thunderstorm Warning	JAN	33 min
Mar 4, 3:57 AM CST	Severe Thunderstorm Warning	JAN	48 min
Mar 4, 4:31 AM CST	Severe Thunderstorm Warning	JAN	44 min
Mar 5, 6:25 AM CST	River Flood Warning	JAN	6 days
Mar 28, 7:46 PM CDT	Mesoscale Discussion	SPC	89 min
Mar 28, 9:58 PM CDT	Tornado Watch	SPC	7 hr
Apr 8, 12:13 PM CDT	Mesoscale Discussion	SPC	2 hr
Apr 11, 11:28 AM CDT	River Flood Warning	JAN	22 days
Apr 11, 3:44 PM CDT	Wind Advisory	JAN	30 hr
Apr 12, 10:24 AM CDT	Mesoscale Discussion	SPC	96 min
Apr 12, 10:41 AM CDT	Tornado Watch PDS	SPC	10 hr
Apr 12, 12:03 PM CDT	Mesoscale Discussion	SPC	87 min
Apr 12, 12:35 PM CDT	Severe Thunderstorm Warning	JAN	40 min
Apr 12, 1:06 PM CDT	Severe Thunderstorm Warning	JAN	39 min
Apr 12, 1:40 PM CDT	Mesoscale Discussion	SPC	95 min
Apr 12, 2:54 PM CDT	Severe Thunderstorm Warning	JAN	54 min
Apr 12, 3:04 PM CDT	Severe Thunderstorm Warning	JAN	41 min
Apr 12, 5:44 PM CDT	Mesoscale Discussion	SPC	91 min
Apr 12, 5:56 PM CDT	Severe Thunderstorm Warning	JAN	44 min
Apr 12, 9:44 PM CDT	Mesoscale Discussion	SPC	91 min
Apr 12, 10:27 PM CDT	Severe Thunderstorm Warning	JAN	63 min
Apr 18, 4:31 AM CDT	Flash Flood Watch	JAN	41 hr
Apr 19, 2:34 AM CDT	Mesoscale Discussion	SPC	116 min
Apr 19, 2:36 AM CDT	Severe Thunderstorm Warning	JAN	39 min
Apr 19, 11:45 AM CDT	Tornado Watch	SPC	9 hr
Apr 19, 2:46 PM CDT	Severe Thunderstorm Warning	JAN	59 min
Apr 19, 3:07 PM CDT	Mesoscale Discussion	SPC	113 min
Apr 19, 3:26 PM CDT	Severe Thunderstorm Warning	JAN	49 min
Apr 21, 2:16 PM CDT	Flash Flood Watch	JAN	44 hr
Apr 23, 1:16 AM CDT	Flash Flood Warning	JAN	3 hr
Apr 23, 4:04 AM CDT	Flash Flood Warning Considerable damage threat	JAN	4 hr
Apr 28, 4:26 PM CDT	Special Weather Statement	JAN	34 min
May 7, 3:58 PM CDT	Wind Advisory	JAN	27 hr
May 8, 11:51 AM CDT	Special Weather Statement	JAN	54 min
May 15, 4:15 PM CDT	Special Weather Statement	JAN	45 min
May 17, 12:54 PM CDT	Mesoscale Discussion	SPC	2 hr
May 23, 11:56 AM CDT	Mesoscale Discussion	SPC	94 min
May 23, 1:06 PM CDT	Special Weather Statement	JAN	39 min
May 23, 1:24 PM CDT	Special Weather Statement	JAN	36 min
May 23, 1:35 PM CDT	Severe Thunderstorm Warning	JAN	40 min
May 23, 1:52 PM CDT	Severe Thunderstorm Warning	JAN	29 min
May 23, 2:05 PM CDT	Severe Thunderstorm Warning	JAN	25 min
May 23, 2:29 PM CDT	Severe Thunderstorm Warning	JAN	43 min
May 27, 2:36 PM CDT	Mesoscale Discussion	SPC	84 min
May 27, 3:06 PM CDT	Severe Thunderstorm Warning	JAN	54 min
May 27, 3:38 PM CDT	Severe Thunderstorm Warning	JAN	67 min
Jun 3, 2:02 PM CDT	Special Weather Statement	JAN	28 min
Jun 3, 2:41 PM CDT	Special Weather Statement	JAN	34 min
Jun 5, 2:07 PM CDT	Mesoscale Discussion	SPC	83 min
Jun 5, 2:49 PM CDT	Severe Thunderstorm Watch	SPC	6 hr
Jun 5, 5:02 PM CDT	Mesoscale Discussion	SPC	88 min
Jun 5, 5:08 PM CDT	Severe Thunderstorm Warning	JAN	82 min
Jun 5, 5:48 PM CDT	Severe Thunderstorm Warning	JAN	72 min
Jun 6, 4:24 PM CDT	Flash Flood Watch	JAN	57 hr
Jun 7, 11:26 AM CDT	Wind Advisory	JAN	22 hr
Jun 8, 2:47 AM CDT	Flash Flood Warning	JAN	3 hr
Jun 8, 9:22 AM CDT	River Flood Warning	JAN	21 days
Jun 8, 1:30 PM CDT	Special Weather Statement	JAN	15 min
Jun 8, 2:19 PM CDT	Special Weather Statement	JAN	56 min
Jun 8, 4:18 PM CDT	Severe Thunderstorm Warning	JAN	42 min
Jun 10, 3:51 AM CDT	Special Weather Statement	JAN	24 min
Jun 21, 6:51 PM CDT	Severe Thunderstorm Warning	JAN	39 min
Jun 21, 7:12 PM CDT	Severe Thunderstorm Warning	JAN	13 min
Jun 21, 7:29 PM CDT	Special Weather Statement	JAN	46 min
Jun 21, 8:07 PM CDT	Severe Thunderstorm Warning	JAN	23 min
Jun 25, 4:52 PM CDT	Severe Thunderstorm Warning	JAN	68 min
Jun 25, 5:43 PM CDT	Severe Thunderstorm Warning	JAN	62 min
Jun 27, 5:58 PM CDT	Special Weather Statement	JAN	32 min
Jun 27, 6:15 PM CDT	Special Weather Statement	JAN	30 min
Jul 1, 7:31 PM CDT	Severe Thunderstorm Warning	JAN	44 min
Jul 1, 8:11 PM CDT	Severe Thunderstorm Warning	JAN	49 min
Jul 1, 8:42 PM CDT	Flash Flood Warning	JAN	2 hr
Jul 2, 12:39 PM CDT	Special Weather Statement	JAN	36 min
Jul 2, 2:00 PM CDT	Flash Flood Warning	JAN	3 hr
Jul 4, 7:00 PM CDT	Special Weather Statement	JAN	30 min
Jul 7, 4:55 AM CDT	Dense Fog Advisory	JAN	3 hr
Jul 10, 2:38 AM CDT	Heat Advisory	JAN	16 hr
Jul 10, 3:19 PM CDT	Heat Advisory	JAN	28 hr
Jul 11, 2:32 PM CDT	Heat Advisory	JAN	28 hr
Jul 13, 2:58 PM CDT	Heat Advisory	JAN	28 hr
Jul 14, 2:15 PM CDT	Mesoscale Discussion	SPC	90 min
Jul 14, 2:22 PM CDT	Heat Advisory	JAN	29 hr
Jul 15, 7:16 PM CDT	Heat Advisory	JAN	24 hr
Jul 17, 7:47 PM CDT	Special Weather Statement	JAN	28 min
Jul 31, 12:35 PM CDT	Mesoscale Discussion	SPC	85 min
Jul 31, 1:21 PM CDT	Severe Thunderstorm Watch	SPC	7 hr
Aug 12, 7:30 PM CDT	Severe Thunderstorm Warning	JAN	34 min
Aug 14, 11:36 AM CDT	Special Weather Statement	JAN	54 min
Aug 16, 4:51 PM CDT	Severe Thunderstorm Warning	JAN	39 min
Aug 16, 5:05 PM CDT	Mesoscale Discussion	SPC	85 min
Aug 16, 5:21 PM CDT	Severe Thunderstorm Warning	JAN	39 min
Aug 16, 6:06 PM CDT	Special Weather Statement	JAN	24 min
Aug 20, 4:13 PM CDT	Special Weather Statement	JAN	32 min
Aug 20, 7:04 PM CDT	Severe Thunderstorm Warning	JAN	41 min
Aug 27, 6:36 AM CDT	Mesoscale Discussion	SPC	114 min
Aug 27, 7:47 AM CDT	Tornado Watch	SPC	8 hr
Aug 27, 2:41 PM CDT	Mesoscale Discussion	SPC	94 min
Aug 28, 3:16 PM CDT	Heat Advisory	JAN	28 hr
Aug 30, 1:25 PM CDT	Special Weather Statement	JAN	35 min
Aug 30, 1:39 PM CDT	Mesoscale Discussion	SPC	3 hr
Sep 1, 2:49 AM CDT	Heat Advisory	JAN	16 hr
Sep 11, 4:16 PM CDT	Special Weather Statement	JAN	44 min
Sep 13, 12:43 AM CDT	Flash Flood Warning	JAN	2 hr
Sep 23, 3:56 AM CDT	Flash Flood Watch	JAN	30 hr
Sep 24, 2:07 PM CDT	River Flood Warning	JAN	6 days
Sep 27, 4:02 AM CDT	Dense Fog Advisory	JAN	6 hr
Oct 7, 4:01 PM CDT	Flash Flood Watch	JAN	63 hr
Oct 9, 4:20 AM CDT	Wind Advisory	JAN	33 hr
Oct 9, 8:41 AM CDT	River Flood Warning	JAN	5 days
Nov 25, 7:27 AM CST	Severe Thunderstorm Warning	JAN	48 min
Nov 30, 2:07 PM CST	Freeze Warning	JAN	19 hr
Dec 12, 8:58 PM CST	Dense Fog Advisory	JAN	12 hr
Dec 13, 7:16 PM CST	Severe Thunderstorm Warning	JAN	59 min
Dec 13, 8:07 PM CST	Severe Thunderstorm Warning	JAN	38 min
Dec 13, 8:10 PM CST	Severe Thunderstorm Warning	JAN	65 min
Dec 13, 8:45 PM CST	Severe Thunderstorm Warning	JAN	60 min
Dec 20, 7:57 PM CST	Dense Fog Advisory	JAN	13 hr
Dec 23, 10:09 PM CST	Severe Thunderstorm Warning	JAN	56 min
Dec 23, 10:12 PM CST	Tornado Warning	JAN	63 min
Dec 23, 10:51 PM CST	Mesoscale Discussion	SPC	114 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	48
Tornado Warning	3
Severe Thunderstorm Watch	2
Tornado Watch	7
Mesoscale Discussion	32
Special Weather Statement	22
Flooding
Areal Flood Warning	3
Flash Flood Warning	12
River Flood Warning	9
Flash Flood Watch	12
Heat
Heat Advisory	8
Cold
Freeze Warning	1
Wind and dust
Wind Advisory	5
Fog and smoke
Dense Fog Advisory	7

The busiest days

Days with the most alerts issued, by UTC date.

Nearby

Alerts in force now Tornadoes on record Forecast The radar archive 2019 2021

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.