Alert archive / Mississippi / Perry County

Weather alerts in Perry County, Mississippi, 2015

139 weather alerts in 2015, from the National Weather Service and the Storm Prediction Center. An alert counts here when it covered this county.

Perry County and its neighbors

Each county as a circle sized by its count in 2015. Tap one for its archive.

Alerts: 139
Warnings: 24
Watches: 16
Advisories: 42
Busiest month: December19 alerts
Busiest day: October 31, 201510 alerts

Over time

By month

Warning verification

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

Perry County, 2015

	Warnings	With a report	False alarm ratio	Reports	Inside a warning
Tornado warnings	0			0
Severe thunderstorm warnings	14	4	71%	1	0%
Flash flood warnings	1	0	100%	0

Each office's whole area, 2015

	Warnings	With a report	False alarm ratio	Reports	Inside a warning	Mean lead time
NWS Mobile, AL: tornado warnings	38	3	92%	3	100%	19 min
NWS Mobile, AL: severe thunderstorm warnings	185	43	77%	129	60%	22 min
NWS Mobile, AL: flash flood warnings	32	10	69%	16	88%	76 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 3, 10:24 AM CST	Mesoscale Discussion	SPC	2 hr
Jan 3, 11:04 AM CST	Tornado Watch	SPC	7 hr
Jan 3, 12:00 PM CST	Mesoscale Discussion	SPC	90 min
Jan 3, 1:20 PM CST	Areal Flood Advisory	MOB	115 min
Jan 3, 1:43 PM CST	Mesoscale Discussion	SPC	92 min
Jan 3, 5:31 PM CST	Mesoscale Discussion	SPC	44 min
Jan 4, 1:25 PM CST	River Flood Warning	MOB	9 days
Jan 6, 4:22 AM CST	Hard Freeze Watch	MOB	23 hr
Jan 7, 3:49 AM CST	Hard Freeze Warning	MOB	30 hr
Jan 7, 3:49 AM CST	Wind Chill Advisory	MOB	30 hr
Feb 16, 3:54 AM CST	Wind Advisory	MOB	26 hr
Feb 16, 1:46 PM CST	Mesoscale Discussion	SPC	2 hr
Feb 18, 4:49 AM CST	Wind Advisory	MOB	13 hr
Feb 20, 2:48 PM CST	Wind Advisory	MOB	28 hr
Mar 1, 4:02 PM CST	Dense Fog Advisory	MOB	17 hr
Mar 2, 3:03 PM CST	Dense Fog Advisory	MOB	18 hr
Mar 5, 8:59 AM CST	Wind Advisory	MOB	13 hr
Mar 5, 3:04 PM CST	Freeze Warning	MOB	18 hr
Mar 6, 3:09 PM CST	Freeze Warning	MOB	16 hr
Mar 9, 7:48 PM CDT	Mesoscale Discussion	SPC	2 hr
Mar 9, 8:41 PM CDT	Areal Flood Advisory	MOB	3 hr
Mar 10, 12:23 PM CDT	Flash Flood Watch	MOB	11 hr
Mar 10, 4:54 PM CDT	Areal Flood Advisory	MOB	3 hr
Mar 12, 3:45 PM CDT	Flash Flood Watch	MOB	23 hr
Mar 22, 5:57 PM CDT	Mesoscale Discussion	SPC	2 hr
Mar 26, 2:48 PM CDT	Mesoscale Discussion	SPC	2 hr
Mar 26, 4:58 PM CDT	Special Weather Statement	MOB	62 min
Apr 3, 3:09 AM CDT	Dense Fog Advisory	MOB	6 hr
Apr 6, 1:06 PM CDT	Mesoscale Discussion	SPC	114 min
Apr 10, 12:05 PM CDT	Mesoscale Discussion	SPC	85 min
Apr 14, 5:10 AM CDT	Flash Flood Watch	MOB	4 days
Apr 14, 7:01 AM CDT	Dense Fog Advisory	MOB	3 hr
Apr 14, 12:24 PM CDT	Areal Flood Advisory	MOB	6 hr
Apr 14, 4:36 PM CDT	Areal Flood Warning	MOB	12 hr
Apr 15, 6:30 PM CDT	Mesoscale Discussion	SPC	2 hr
Apr 17, 10:25 AM CDT	River Flood Warning	MOB	12 days
Apr 18, 12:26 PM CDT	Flash Flood Watch	MOB	22 hr
Apr 18, 6:17 PM CDT	Mesoscale Discussion	SPC	2 hr
Apr 19, 2:06 AM CDT	Mesoscale Discussion	SPC	84 min
Apr 25, 9:35 AM CDT	Mesoscale Discussion	SPC	115 min
Apr 25, 10:41 AM CDT	Severe Thunderstorm Watch	SPC	7 hr
Apr 25, 1:50 PM CDT	Mesoscale Discussion	SPC	85 min
Apr 27, 9:47 AM CDT	Mesoscale Discussion	SPC	88 min
May 11, 12:30 PM CDT	Mesoscale Discussion	SPC	2 hr
May 16, 6:46 AM CDT	Areal Flood Advisory	MOB	119 min
May 16, 9:09 AM CDT	Areal Flood Advisory	MOB	3 hr
May 19, 5:52 AM CDT	Dense Fog Advisory	MOB	111 min
May 20, 3:25 PM CDT	Special Weather Statement	MOB	50 min
May 20, 4:18 PM CDT	Severe Thunderstorm Warning	MOB	28 min
May 24, 5:03 PM CDT	Mesoscale Discussion	SPC	117 min
May 25, 2:38 AM CDT	Mesoscale Discussion	SPC	3 hr
May 25, 5:31 AM CDT	Areal Flood Advisory	MOB	3 hr
May 25, 5:54 AM CDT	Flash Flood Warning	MOB	6 hr
May 26, 5:22 AM CDT	Special Weather Statement	MOB	83 min
May 26, 8:00 PM CDT	Dense Fog Advisory	MOB	8 hr
May 27, 11:51 AM CDT	Mesoscale Discussion	SPC	54 min
May 27, 3:12 PM CDT	Mesoscale Discussion	SPC	93 min
Jun 9, 7:17 AM CDT	Special Weather Statement	MOB	58 min
Jun 9, 8:14 AM CDT	Special Weather Statement	MOB	46 min
Jun 11, 3:35 PM CDT	Special Weather Statement	MOB	55 min
Jun 21, 5:35 PM CDT	Severe Thunderstorm Warning	MOB	28 min
Jun 23, 10:03 AM CDT	Heat Advisory	MOB	8 hr
Jun 24, 1:24 PM CDT	Special Weather Statement	MOB	66 min
Jun 24, 1:55 PM CDT	Mesoscale Discussion	SPC	65 min
Jun 24, 2:16 PM CDT	Special Weather Statement	MOB	44 min
Jun 24, 2:38 PM CDT	Severe Thunderstorm Warning	MOB	52 min
Jun 27, 12:12 PM CDT	Special Weather Statement	MOB	63 min
Jun 30, 11:38 AM CDT	Mesoscale Discussion	SPC	97 min
Jun 30, 12:38 PM CDT	Special Weather Statement	MOB	67 min
Jul 4, 2:47 PM CDT	Special Weather Statement	MOB	58 min
Jul 4, 3:07 PM CDT	Severe Thunderstorm Warning	MOB	38 min
Jul 5, 1:09 PM CDT	Special Weather Statement	MOB	66 min
Jul 5, 1:58 PM CDT	Severe Thunderstorm Warning	MOB	47 min
Jul 14, 2:08 AM CDT	Heat Advisory	MOB	17 hr
Jul 16, 3:20 PM CDT	Heat Advisory	MOB	28 hr
Jul 17, 3:33 PM CDT	Heat Advisory	MOB	27 hr
Jul 18, 3:36 PM CDT	Heat Advisory	MOB	27 hr
Jul 18, 3:36 PM CDT	Heat Advisory	MOB	51 hr
Jul 20, 3:24 AM CDT	Heat Advisory	MOB	40 hr
Jul 21, 3:53 PM CDT	Heat Advisory	MOB	27 hr
Jul 21, 6:25 PM CDT	Special Weather Statement	MOB	65 min
Jul 24, 7:51 PM CDT	Special Weather Statement	MOB	54 min
Jul 24, 8:40 PM CDT	Special Weather Statement	MOB	50 min
Jul 28, 3:13 PM CDT	Heat Advisory	MOB	28 hr
Jul 29, 2:12 PM CDT	Mesoscale Discussion	SPC	2 hr
Jul 30, 12:13 PM CDT	Heat Advisory	MOB	6 hr
Jul 30, 6:11 PM CDT	Severe Thunderstorm Warning	MOB	34 min
Aug 7, 2:36 PM CDT	Heat Advisory	MOB	3 days
Aug 8, 3:43 PM CDT	Special Weather Statement	MOB	62 min
Aug 8, 4:27 PM CDT	Severe Thunderstorm Warning	MOB	63 min
Aug 8, 7:14 PM CDT	Special Weather Statement	MOB	61 min
Aug 9, 5:32 AM CDT	Excessive Heat Warning	MOB	13 hr
Aug 9, 5:32 AM CDT	Heat Advisory	MOB	37 hr
Aug 20, 2:41 PM CDT	Special Weather Statement	MOB	64 min
Oct 15, 8:17 PM CDT	Fire Weather Watch	MOB	71 hr
Oct 25, 5:20 AM CDT	Flash Flood Watch	MOB	42 hr
Oct 26, 4:19 AM CDT	Wind Advisory	MOB	15 hr
Oct 26, 6:35 AM CDT	Areal Flood Advisory	MOB	3 hr
Oct 31, 4:13 AM CDT	Flash Flood Watch	MOB	54 hr
Oct 31, 11:45 AM CDT	Tornado Watch	SPC	8 hr
Oct 31, 1:35 PM CDT	Mesoscale Discussion	SPC	55 min
Oct 31, 3:36 PM CDT	Mesoscale Discussion	SPC	54 min
Oct 31, 4:41 PM CDT	Severe Thunderstorm Warning	MOB	49 min
Oct 31, 4:52 PM CDT	Severe Thunderstorm Warning	MOB	38 min
Oct 31, 5:28 PM CDT	Severe Thunderstorm Warning	MOB	47 min
Oct 31, 5:31 PM CDT	Severe Thunderstorm Warning	MOB	44 min
Oct 31, 5:42 PM CDT	Mesoscale Discussion	SPC	93 min
Oct 31, 5:58 PM CDT	Areal Flood Advisory	MOB	3 hr
Nov 4, 12:37 AM CST	Dense Fog Advisory	MOB	7 hr
Nov 5, 3:57 AM CST	Dense Fog Advisory	MOB	5 hr
Nov 6, 3:50 PM CST	Dense Fog Advisory	MOB	17 hr
Nov 17, 4:53 AM CST	Flash Flood Watch	MOB	27 hr
Nov 17, 10:38 AM CST	Wind Advisory	MOB	27 hr
Nov 18, 1:14 AM CST	Mesoscale Discussion	SPC	2 hr
Nov 18, 2:49 AM CST	Tornado Watch	SPC	6 hr
Nov 18, 5:31 AM CST	Special Weather Statement	MOB	59 min
Nov 18, 8:13 PM CST	Dense Fog Advisory	MOB	13 hr
Nov 21, 4:04 AM CST	Freeze Watch	MOB	22 hr
Nov 22, 2:26 AM CST	Freeze Warning	MOB	30 hr
Nov 28, 4:29 AM CST	Dense Fog Advisory	MOB	4 hr
Dec 10, 5:45 AM CST	Dense Fog Advisory	MOB	3 hr
Dec 13, 1:07 PM CST	Wind Advisory	MOB	15 hr
Dec 16, 4:50 PM CST	Mesoscale Discussion	SPC	2 hr
Dec 21, 5:47 PM CST	Mesoscale Discussion	SPC	118 min
Dec 23, 7:18 AM CST	Special Weather Statement	MOB	57 min
Dec 23, 1:33 PM CST	Mesoscale Discussion	SPC	57 min
Dec 23, 1:40 PM CST	Severe Thunderstorm Warning	MOB	50 min
Dec 23, 2:17 PM CST	Tornado Watch	SPC	6 hr
Dec 23, 5:12 PM CST	Mesoscale Discussion	SPC	63 min
Dec 24, 9:11 AM CST	River Flood Warning	MOB	10 days
Dec 25, 12:56 AM CST	Special Weather Statement	MOB	64 min
Dec 25, 1:07 AM CST	Areal Flood Advisory	MOB	3 hr
Dec 25, 1:54 AM CST	Special Weather Statement	MOB	51 min
Dec 28, 2:03 AM CST	Mesoscale Discussion	SPC	117 min
Dec 28, 2:23 AM CST	Tornado Watch	SPC	8 hr
Dec 28, 5:14 AM CST	Mesoscale Discussion	SPC	2 hr
Dec 28, 5:43 AM CST	Special Weather Statement	MOB	32 min
Dec 28, 6:41 AM CST	Severe Thunderstorm Warning	MOB	49 min
Dec 28, 6:53 AM CST	Severe Thunderstorm Warning	MOB	52 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	14
Severe Thunderstorm Watch	1
Tornado Watch	5
Mesoscale Discussion	34
Special Weather Statement	23
Flooding
Areal Flood Warning	1
Flash Flood Warning	1
River Flood Warning	3
Flash Flood Watch	7
Areal Flood Advisory	10
Heat
Excessive Heat Warning	1
Heat Advisory	12
Cold
Freeze Warning	3
Hard Freeze Warning	1
Freeze Watch	1
Hard Freeze Watch	1
Wind Chill Advisory	1
Wind and dust
Wind Advisory	7
Fire
Fire Weather Watch	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 2014 2016

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.