Alert archive / Mississippi / Clarke County

Weather alerts in Clarke County, Mississippi, 2019

121 weather alerts in 2019, from the National Weather Service and the Storm Prediction Center. An alert counts here when it covered this county.

Clarke County and its neighbors

Each county as a circle sized by its count in 2019. Tap one for its archive.

Alerts: 121
Warnings: 33
Watches: 17
Advisories: 16
Busiest month: April21 alerts
Busiest day: April 14, 20198 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 5 tornado warnings covering Clarke County in 2019 had a tornado report inside them; 10 of 10 tornado reports fell inside a warning, on average 34 minutes after it went out.

Clarke County, 2019

	Warnings	With a report	False alarm ratio	Reports	Inside a warning	Mean lead time
Tornado warnings	5	2	60%	10	100%	34 min
Severe thunderstorm warnings	12	9	25%	17	47%	27 min
Flash flood warnings	2	1	50%	1	100%	98 min

Each office's whole area, 2019

	Warnings	With a report	False alarm ratio	Reports	Inside a warning	Mean lead time
NWS Jackson, MS: tornado warnings	122	50	59%	184	84%	23 min
NWS Jackson, MS: severe thunderstorm warnings	404	246	39%	711	74%	26 min
NWS Jackson, MS: flash flood warnings	117	78	33%	278	81%	88 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, 4:06 PM CST	Flash Flood Watch	JAN	55 hr
Jan 2, 9:38 AM CST	River Flood Warning	JAN	72 hr
Jan 2, 9:38 AM CST	River Flood Warning	JAN	16 min
Jan 2, 11:05 AM CST	River Flood Warning	JAN	38 hr
Jan 5, 2:02 PM CST	Dense Fog Advisory	JAN	17 hr
Jan 17, 9:10 PM CST	Dense Fog Advisory	JAN	12 hr
Jan 19, 5:04 AM CST	Mesoscale Discussion	SPC	116 min
Jan 19, 5:23 AM CST	Tornado Watch	SPC	8 hr
Jan 23, 10:34 AM CST	Special Weather Statement	JAN	56 min
Jan 27, 3:51 PM CST	Winter Storm Watch	JAN	12 hr
Jan 28, 3:51 AM CST	Winter Storm Warning	JAN	24 hr
Jan 28, 3:51 AM CST	Winter Weather Advisory	JAN	27 hr
Feb 3, 4:03 AM CST	Dense Fog Advisory	JAN	6 hr
Feb 4, 3:42 PM CST	Dense Fog Advisory	JAN	16 hr
Feb 12, 6:40 AM CST	Mesoscale Discussion	SPC	3 hr
Feb 20, 6:29 AM CST	Mesoscale Discussion	SPC	3 hr
Feb 20, 10:22 AM CST	Flash Flood Warning	JAN	4 hr
Feb 20, 10:44 AM CST	Mesoscale Discussion	SPC	2 hr
Feb 20, 11:38 AM CST	Special Weather Statement	JAN	37 min
Feb 20, 5:16 PM CST	River Flood Warning	JAN	3 days
Feb 23, 7:51 PM CST	Mesoscale Discussion	SPC	114 min
Mar 3, 9:13 AM CST	Mesoscale Discussion	SPC	62 min
Mar 3, 11:03 AM CST	Tornado Watch	SPC	7 hr
Mar 3, 11:05 AM CST	Severe Thunderstorm Warning	JAN	25 min
Mar 4, 3:50 AM CST	Freeze Warning	JAN	30 hr
Mar 5, 3:10 AM CST	Freeze Warning	JAN	31 hr
Mar 6, 1:48 PM CST	Freeze Warning	JAN	18 hr
Mar 14, 2:10 PM CDT	Mesoscale Discussion	SPC	95 min
Mar 14, 3:21 PM CDT	Severe Thunderstorm Warning	JAN	54 min
Mar 14, 4:16 PM CDT	Special Weather Statement	JAN	44 min
Mar 14, 4:59 PM CDT	Special Weather Statement	JAN	31 min
Apr 6, 4:46 PM CDT	Mesoscale Discussion	SPC	119 min
Apr 7, 9:39 PM CDT	Mesoscale Discussion	SPC	2 hr
Apr 8, 7:58 PM CDT	Mesoscale Discussion	SPC	2 hr
Apr 13, 3:19 AM CDT	Wind Advisory	JAN	19 hr
Apr 13, 5:04 PM CDT	Mesoscale Discussion	SPC	2 hr
Apr 13, 7:11 PM CDT	Tornado Watch	SPC	11 hr
Apr 13, 8:25 PM CDT	Mesoscale Discussion	SPC	95 min
Apr 13, 9:13 PM CDT	Mesoscale Discussion	SPC	92 min
Apr 13, 10:23 PM CDT	Tornado Warning	JAN	67 min
Apr 13, 11:01 PM CDT	Mesoscale Discussion	SPC	119 min
Apr 13, 11:08 PM CDT	Tornado Warning	JAN	67 min
Apr 14, 3:25 AM CDT	Special Weather Statement	JAN	35 min
Apr 14, 10:45 AM CDT	River Flood Warning	JAN	59 hr
Apr 17, 2:59 PM CDT	Flash Flood Watch	JAN	28 hr
Apr 18, 12:42 PM CDT	Mesoscale Discussion	SPC	2 hr
Apr 18, 1:41 PM CDT	Tornado Watch	SPC	7 hr
Apr 18, 2:46 PM CDT	Mesoscale Discussion	SPC	89 min
Apr 18, 4:02 PM CDT	Severe Thunderstorm Warning	JAN	73 min
Apr 19, 10:03 AM CDT	River Flood Warning	JAN	23 hr
Apr 25, 8:06 AM CDT	Tornado Watch	SPC	8 hr
Apr 25, 11:48 AM CDT	Mesoscale Discussion	SPC	117 min
May 3, 6:28 PM CDT	Special Weather Statement	JAN	47 min
May 4, 11:58 AM CDT	Mesoscale Discussion	SPC	77 min
May 8, 3:49 AM CDT	Flash Flood Watch	JAN	4 days
May 9, 8:09 AM CDT	Severe Thunderstorm Watch	SPC	6 hr
May 9, 11:22 AM CDT	Mesoscale Discussion	SPC	113 min
May 9, 11:57 AM CDT	Flash Flood Warning	JAN	96 min
May 9, 12:27 PM CDT	Severe Thunderstorm Warning	JAN	48 min
May 9, 8:54 PM CDT	River Flood Warning	JAN	6 days
May 12, 2:35 AM CDT	Special Weather Statement	JAN	25 min
May 12, 4:50 AM CDT	Special Weather Statement	MOB	40 min
Jun 6, 3:35 AM CDT	Flash Flood Watch	JAN	12 hr
Jun 7, 8:43 AM CDT	Severe Thunderstorm Warning	JAN	47 min
Jun 7, 8:51 AM CDT	Mesoscale Discussion	SPC	84 min
Jun 7, 9:33 AM CDT	Severe Thunderstorm Warning	JAN	42 min
Jun 7, 4:35 PM CDT	Mesoscale Discussion	SPC	85 min
Jun 21, 3:33 AM CDT	Heat Advisory	JAN	15 hr
Jun 23, 1:50 PM CDT	Mesoscale Discussion	SPC	115 min
Jun 27, 4:19 PM CDT	Special Weather Statement	JAN	26 min
Jun 27, 4:48 PM CDT	Special Weather Statement	JAN	27 min
Jul 7, 12:48 PM CDT	Mesoscale Discussion	SPC	117 min
Jul 7, 5:29 PM CDT	Special Weather Statement	JAN	31 min
Jul 11, 2:22 PM CDT	Flash Flood Watch	JAN	4 days
Jul 14, 11:38 AM CDT	Special Weather Statement	JAN	22 min
Jul 14, 11:42 AM CDT	Tornado Warning	JAN	31 min
Jul 14, 12:13 PM CDT	Severe Thunderstorm Warning	JAN	62 min
Jul 14, 12:23 PM CDT	Mesoscale Discussion	SPC	3 hr
Jul 14, 12:24 PM CDT	Severe Thunderstorm Warning	JAN	36 min
Jul 14, 6:23 PM CDT	Mesoscale Discussion	SPC	37 min
Aug 1, 4:37 PM CDT	Special Weather Statement	JAN	23 min
Aug 2, 2:28 PM CDT	Special Weather Statement	JAN	47 min
Aug 7, 3:33 PM CDT	Heat Advisory	JAN	51 hr
Aug 10, 3:50 AM CDT	Heat Advisory	JAN	71 hr
Aug 11, 3:57 AM CDT	Excessive Heat Warning	JAN	64 hr
Aug 13, 3:13 PM CDT	Heat Advisory	JAN	28 hr
Aug 14, 5:15 PM CDT	Special Weather Statement	JAN	15 min
Aug 14, 5:18 PM CDT	Severe Thunderstorm Warning	JAN	27 min
Aug 14, 5:32 PM CDT	Severe Thunderstorm Warning	JAN	28 min
Aug 14, 5:40 PM CDT	Special Weather Statement	MOB	50 min
Aug 27, 3:56 PM CDT	Mesoscale Discussion	SPC	2 hr
Sep 6, 3:28 PM CDT	Heat Advisory	JAN	28 hr
Sep 8, 3:21 AM CDT	Heat Advisory	JAN	15 hr
Sep 8, 6:16 PM CDT	Special Weather Statement	JAN	29 min
Oct 21, 4:41 PM CDT	Special Weather Statement	JAN	34 min
Oct 24, 2:53 PM CDT	Flash Flood Watch	JAN	46 hr
Oct 25, 9:49 AM CDT	Tornado Watch	SPC	6 hr
Oct 25, 3:03 PM CDT	Mesoscale Discussion	SPC	57 min
Oct 25, 3:43 PM CDT	Tornado Watch	SPC	7 hr
Oct 25, 8:04 PM CDT	Mesoscale Discussion	SPC	86 min
Oct 26, 5:04 AM CDT	Wind Advisory	JAN	8 hr
Oct 30, 8:41 PM CDT	Mesoscale Discussion	SPC	2 hr
Nov 8, 3:32 AM CST	Freeze Warning	JAN	28 hr
Nov 11, 3:36 AM CST	Freeze Watch	JAN	7 hr
Nov 11, 3:36 AM CST	Wind Advisory	JAN	38 hr
Nov 11, 10:51 AM CST	Freeze Warning	JAN	47 hr
Nov 27, 2:15 AM CST	Mesoscale Discussion	SPC	90 min
Dec 13, 9:40 PM CST	Dense Fog Advisory	JAN	11 hr
Dec 14, 8:04 PM CST	Dense Fog Advisory	JAN	13 hr
Dec 16, 2:22 PM CST	Tornado Watch	SPC	8 hr
Dec 16, 6:12 PM CST	Mesoscale Discussion	SPC	2 hr
Dec 16, 6:20 PM CST	Mesoscale Discussion	SPC	25 min
Dec 16, 6:22 PM CST	Tornado Warning Tornado observedConsiderable damage threat	JAN	53 min
Dec 16, 7:09 PM CST	Severe Thunderstorm Warning	JAN	37 min
Dec 16, 7:51 PM CST	Severe Thunderstorm Warning	JAN	54 min
Dec 16, 7:57 PM CST	Mesoscale Discussion	SPC	93 min
Dec 16, 8:09 PM CST	Tornado Warning	JAN	36 min
Dec 16, 8:58 PM CST	Mesoscale Discussion	SPC	92 min
Dec 29, 6:05 PM CST	Mesoscale Discussion	SPC	85 min
Dec 29, 6:27 PM CST	Special Weather Statement	JAN	63 min
Dec 29, 7:23 PM CST	Special Weather Statement	JAN	37 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	12
Tornado Warning	5
Severe Thunderstorm Watch	1
Tornado Watch	8
Mesoscale Discussion	35
Special Weather Statement	20
Flooding
Flash Flood Warning	2
River Flood Warning	7
Flash Flood Watch	6
Winter
Winter Storm Warning	1
Winter Storm Watch	1
Winter Weather Advisory	1
Heat
Excessive Heat Warning	1
Heat Advisory	6
Cold
Freeze Warning	5
Freeze Watch	1
Wind and dust
Wind Advisory	3
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 2018 2020

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.