Alert archive / Mississippi / Forrest County

Weather alerts in Forrest County, Mississippi, 2020

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

Forrest County and its neighbors

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

Alerts: 114
Warnings: 24
Watches: 14
Advisories: 20
Busiest month: April18 alerts
Busiest day: April 20, 20205 alerts

Over time

By month

Warning verification

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

1 of 1 tornado warnings covering Forrest County in 2020 had a tornado report inside them; 3 of 3 tornado reports fell inside a warning, on average 15 minutes after it went out.

Forrest County, 2020

	Warnings	With a report	False alarm ratio	Reports	Inside a warning	Mean lead time
Tornado warnings	1	1	0%	3	100%	15 min
Severe thunderstorm warnings	13	10	23%	26	62%	15 min
Flash flood warnings	5	5	0%	12	92%	26 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 9, 2:27 PM CST	Wind Advisory	JAN	48 hr
Jan 11, 7:39 AM CST	Mesoscale Discussion	SPC	96 min
Jan 11, 7:57 AM CST	Tornado Watch	SPC	9 hr
Jan 11, 9:49 AM CST	Severe Thunderstorm Warning	JAN	56 min
Jan 11, 9:54 AM CST	Mesoscale Discussion	SPC	96 min
Jan 13, 2:36 PM CST	Dense Fog Advisory	JAN	18 hr
Jan 18, 12:43 PM CST	Mesoscale Discussion	SPC	2 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, 11:49 AM CST	Tornado Watch	SPC	6 hr
Feb 5, 3:59 PM CST	Severe Thunderstorm Warning	JAN	61 min
Feb 5, 5:06 PM CST	Mesoscale Discussion	SPC	84 min
Feb 5, 5:50 PM CST	Tornado Watch	SPC	6 hr
Feb 5, 9:43 PM CST	Mesoscale Discussion	SPC	2 hr
Feb 5, 11:15 PM CST	Mesoscale Discussion	SPC	2 hr
Feb 5, 11:48 PM CST	Tornado Watch	SPC	8 hr
Feb 6, 4:41 AM CST	Special Weather Statement	JAN	34 min
Feb 10, 4:33 PM CST	Mesoscale Discussion	SPC	87 min
Feb 10, 5:23 PM CST	Flash Flood Warning	JAN	87 min
Feb 25, 5:04 AM CST	Dense Fog Advisory	JAN	4 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, 5:05 PM CST	Mesoscale Discussion	SPC	2 hr
Mar 11, 2:31 AM CDT	Dense Fog Advisory	JAN	6 hr
Mar 31, 7:53 AM CDT	Mesoscale Discussion	SPC	2 hr
Mar 31, 8:32 AM CDT	Severe Thunderstorm Warning	JAN	41 min
Apr 9, 10:35 PM CDT	Special Weather Statement	JAN	25 min
Apr 11, 3:44 PM CDT	Wind Advisory	JAN	30 hr
Apr 12, 1:24 PM CDT	Tornado Watch	SPC	9 hr
Apr 12, 8:20 PM CDT	Severe Thunderstorm Warning	JAN	25 min
Apr 19, 11:06 AM CDT	Mesoscale Discussion	SPC	54 min
Apr 19, 11:45 AM CDT	Tornado Watch	SPC	9 hr
Apr 19, 6:37 PM CDT	Mesoscale Discussion	SPC	53 min
Apr 19, 7:42 PM CDT	Mesoscale Discussion	SPC	33 min
Apr 19, 7:44 PM CDT	Tornado Warning Tornado observedConsiderable damage threat	JAN	31 min
Apr 19, 7:45 PM CDT	Severe Thunderstorm Warning	JAN	30 min
Apr 19, 8:04 PM CDT	Flash Flood Warning	JAN	3 hr
Apr 19, 8:51 PM CDT	Special Weather Statement	JAN	24 min
Apr 22, 6:47 PM CDT	Mesoscale Discussion	SPC	88 min
Apr 22, 9:47 PM CDT	Tornado Watch	SPC	9 hr
Apr 23, 2:28 AM CDT	Mesoscale Discussion	SPC	92 min
Apr 23, 1:37 PM CDT	Mesoscale Discussion	SPC	113 min
Apr 29, 5:14 AM CDT	Special Weather Statement	JAN	31 min
Apr 29, 5:51 AM CDT	Special Weather Statement	JAN	39 min
May 6, 10:26 AM CDT	Red Flag Warning	JAN	9 hr
May 8, 9:30 AM CDT	Mesoscale Discussion	SPC	2 hr
May 17, 12:54 PM CDT	Mesoscale Discussion	SPC	2 hr
May 24, 3:36 PM CDT	Special Weather Statement	JAN	24 min
May 24, 3:39 PM CDT	Severe Thunderstorm Warning	JAN	41 min
May 24, 4:01 PM CDT	Severe Thunderstorm Warning	JAN	23 min
May 26, 3:10 PM CDT	Special Weather Statement	JAN	65 min
May 26, 3:20 PM CDT	Flash Flood Warning	JAN	83 min
May 27, 12:16 PM CDT	Mesoscale Discussion	SPC	89 min
May 27, 12:32 PM CDT	Special Weather Statement	JAN	28 min
May 27, 12:42 PM CDT	Severe Thunderstorm Warning	JAN	48 min
May 27, 2:36 PM CDT	Mesoscale Discussion	SPC	84 min
Jun 5, 8:01 PM CDT	Severe Thunderstorm Warning	JAN	74 min
Jun 6, 4:24 PM CDT	Flash Flood Watch	JAN	57 hr
Jun 6, 9:59 PM CDT	River Flood Warning	JAN	37 hr
Jun 7, 11:26 AM CDT	Wind Advisory	JAN	22 hr
Jun 7, 2:15 PM CDT	Special Weather Statement	JAN	60 min
Jun 24, 6:08 AM CDT	Mesoscale Discussion	SPC	2 hr
Jun 24, 9:53 AM CDT	Special Weather Statement	JAN	22 min
Jun 24, 10:15 AM CDT	Special Weather Statement	JAN	30 min
Jun 25, 3:43 PM CDT	Mesoscale Discussion	SPC	62 min
Jun 25, 5:23 PM CDT	Severe Thunderstorm Warning	JAN	67 min
Jul 1, 2:26 PM CDT	Special Weather Statement	JAN	34 min
Jul 1, 3:27 PM CDT	Special Weather Statement	JAN	33 min
Jul 8, 2:59 PM CDT	Special Weather Statement	JAN	46 min
Jul 8, 3:15 PM CDT	Severe Thunderstorm Warning	JAN	60 min
Jul 8, 3:31 PM CDT	Flash Flood Warning	JAN	102 min
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 12, 2:51 PM CDT	Heat Advisory	JAN	28 hr
Jul 12, 2:51 PM CDT	Mesoscale Discussion	SPC	84 min
Jul 12, 7:43 PM CDT	Special Weather Statement	JAN	62 min
Jul 12, 7:53 PM CDT	Severe Thunderstorm Warning	JAN	67 min
Jul 12, 11:38 PM CDT	Special Weather Statement	JAN	52 min
Jul 13, 2:58 PM CDT	Heat Advisory	JAN	28 hr
Jul 15, 12:24 PM CDT	Mesoscale Discussion	SPC	96 min
Jul 15, 4:55 PM CDT	Special Weather Statement	JAN	35 min
Jul 15, 5:16 PM CDT	Flash Flood Warning	JAN	80 min
Aug 14, 2:36 PM CDT	Special Weather Statement	JAN	54 min
Aug 16, 7:33 PM CDT	Special Weather Statement	JAN	27 min
Aug 16, 7:42 PM CDT	Special Weather Statement	JAN	33 min
Aug 16, 7:48 PM CDT	Severe Thunderstorm Warning	JAN	42 min
Aug 19, 5:31 PM CDT	Special Weather Statement	JAN	29 min
Aug 21, 6:24 PM CDT	Special Weather Statement	JAN	36 min
Aug 27, 2:41 PM CDT	Mesoscale Discussion	SPC	94 min
Sep 13, 2:32 AM CDT	Flash Flood Watch	JAN	66 hr
Sep 13, 4:15 PM CDT	Tropical Storm Watch	JAN	42 hr
Sep 13, 10:45 PM CDT	Tropical Storm Warning	JAN	36 hr
Sep 27, 4:02 AM CDT	Dense Fog Advisory	JAN	6 hr
Oct 9, 4:20 AM CDT	Wind Advisory	JAN	33 hr
Oct 9, 3:50 PM CDT	Mesoscale Discussion	SPC	85 min
Oct 10, 2:23 AM CDT	Mesoscale Discussion	SPC	2 hr
Oct 19, 7:09 PM CDT	Dense Fog Advisory	JAN	14 hr
Oct 23, 4:40 PM CDT	Special Weather Statement	JAN	35 min
Oct 27, 4:25 AM CDT	Tropical Storm Warning	JAN	43 hr
Oct 27, 2:23 PM CDT	Flash Flood Watch	JAN	33 hr
Oct 28, 11:26 AM CDT	Mesoscale Discussion	SPC	3 hr
Oct 28, 8:48 PM CDT	Special Weather Statement	JAN	27 min
Nov 25, 12:40 PM CST	Special Weather Statement	JAN	35 min
Nov 30, 2:07 PM CST	Freeze Warning	JAN	19 hr
Dec 10, 2:27 PM CST	Dense Fog Advisory	JAN	19 hr
Dec 12, 8:58 PM CST	Dense Fog Advisory	JAN	12 hr
Dec 13, 10:11 PM CST	Special Weather Statement	JAN	64 min
Dec 20, 7:57 PM CST	Dense Fog Advisory	JAN	13 hr
Dec 23, 10:51 PM CST	Mesoscale Discussion	SPC	114 min
Dec 24, 1:02 AM CST	Mesoscale Discussion	SPC	58 min
Dec 24, 1:42 AM CST	Tornado Watch	SPC	7 hr
Dec 29, 7:38 AM CST	Dense Fog Advisory	JAN	95 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	13
Tornado Warning	1
Tornado Watch	9
Mesoscale Discussion	30
Special Weather Statement	26
Flooding
Flash Flood Warning	5
River Flood Warning	1
Flash Flood Watch	4
Heat
Heat Advisory	5
Cold
Freeze Warning	1
Wind and dust
Wind Advisory	4
Fire
Red Flag Warning	1
Fog and smoke
Dense Fog Advisory	11
Tropical
Tropical Storm Warning	2
Tropical Storm Watch	1

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.