Alert archive / Missouri / Lafayette County

Weather alerts in Lafayette County, Missouri, 2020

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

Lafayette County and its neighbors

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

Alerts: 145
Warnings: 55
Watches: 14
Advisories: 39
Busiest month: May26 alerts
Busiest day: June 4, 202011 alerts

Over time

By month

Warning verification

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

Lafayette County, 2020

	Warnings	With a report	False alarm ratio	Reports	Inside a warning	Mean lead time
Tornado warnings	0			0
Severe thunderstorm warnings	23	18	22%	6	100%	18 min
Flash flood warnings	4	3	25%	2	100%	51 min

Each office's whole area, 2020

	Warnings	With a report	False alarm ratio	Reports	Inside a warning	Mean lead time
NWS Kansas City, MO: tornado warnings	7	2	71%	9	33%	17 min
NWS Kansas City, MO: severe thunderstorm warnings	182	82	55%	192	91%	21 min
NWS Kansas City, MO: flash flood warnings	27	13	52%	23	83%	154 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 8, 2:31 PM CST	Flash Flood Watch	EAX	61 hr
Jan 9, 6:04 AM CST	Wind Advisory	EAX	9 hr
Jan 9, 3:27 PM CST	Winter Storm Watch	EAX	12 hr
Jan 10, 3:29 AM CST	Winter Storm Warning	EAX	38 hr
Jan 12, 10:05 PM CST	Dense Fog Advisory	EAX	13 hr
Jan 13, 8:13 PM CST	Dense Fog Advisory	EAX	13 hr
Jan 15, 2:51 PM CST	Winter Storm Watch	EAX	13 hr
Jan 16, 3:51 AM CST	Winter Weather Advisory	EAX	50 hr
Jan 17, 3:20 AM CST	Mesoscale Discussion	SPC	6 hr
Jan 17, 9:45 AM CST	Mesoscale Discussion	SPC	6 hr
Jan 21, 3:54 PM CST	Winter Weather Advisory	EAX	32 hr
Jan 23, 3:19 AM CST	Winter Weather Advisory	EAX	36 hr
Jan 26, 2:36 PM CST	Dense Fog Advisory	EAX	19 hr
Jan 28, 2:56 AM CST	Winter Weather Advisory	EAX	33 hr
Feb 3, 3:57 PM CST	Winter Weather Advisory	EAX	55 hr
Feb 11, 3:15 PM CST	Winter Weather Advisory	EAX	33 hr
Feb 25, 3:28 AM CST	Winter Weather Advisory	EAX	18 hr
Mar 5, 2:17 AM CST	Red Flag Warning	EAX	16 hr
Mar 7, 2:40 AM CST	Red Flag Warning	EAX	15 hr
Mar 9, 3:41 PM CDT	Mesoscale Discussion	SPC	2 hr
Mar 23, 3:10 AM CDT	Dense Fog Advisory	EAX	7 hr
Mar 25, 4:49 AM CDT	Dense Fog Advisory	EAX	5 hr
Mar 26, 9:51 PM CDT	Mesoscale Discussion	SPC	84 min
Mar 26, 10:27 PM CDT	Severe Thunderstorm Watch	SPC	7 hr
Mar 27, 12:53 AM CDT	Severe Thunderstorm Warning	EAX	37 min
Mar 27, 1:20 AM CDT	Mesoscale Discussion	SPC	85 min
Mar 27, 1:41 AM CDT	Severe Thunderstorm Warning	EAX	34 min
Mar 27, 2:54 AM CDT	Severe Thunderstorm Warning	EAX	38 min
Mar 27, 8:33 PM CDT	Mesoscale Discussion	SPC	87 min
Mar 28, 4:10 AM CDT	Wind Advisory	EAX	25 hr
Mar 28, 6:53 AM CDT	Special Weather Statement	EAX	52 min
Mar 28, 7:37 AM CDT	Special Weather Statement	EAX	53 min
Apr 3, 3:11 PM CDT	Freeze Warning	EAX	18 hr
Apr 9, 2:39 AM CDT	Freeze Warning	EAX	30 hr
Apr 11, 8:03 PM CDT	Mesoscale Discussion	SPC	57 min
Apr 12, 4:09 AM CDT	Freeze Warning	EAX	30 hr
Apr 12, 4:09 AM CDT	Wind Advisory	EAX	24 hr
Apr 13, 3:56 AM CDT	Freeze Warning	EAX	30 hr
Apr 17, 3:29 PM CDT	Freeze Warning	EAX	18 hr
Apr 28, 3:09 PM CDT	Special Weather Statement	EAX	36 min
Apr 28, 3:13 PM CDT	Severe Thunderstorm Warning	EAX	47 min
Apr 28, 3:33 PM CDT	Mesoscale Discussion	SPC	87 min
Apr 29, 3:19 AM CDT	Wind Advisory	EAX	16 hr
May 4, 6:33 AM CDT	Severe Thunderstorm Watch	SPC	12 hr
May 4, 10:38 AM CDT	Mesoscale Discussion	SPC	97 min
May 4, 10:53 AM CDT	Special Weather Statement	EAX	52 min
May 4, 12:08 PM CDT	Severe Thunderstorm Warning	EAX	37 min
May 8, 3:06 AM CDT	Frost Advisory	EAX	29 hr
May 10, 2:49 PM CDT	Frost Advisory	EAX	16 hr
May 14, 3:20 AM CDT	Flash Flood Watch	EAX	25 hr
May 14, 8:22 PM CDT	Mesoscale Discussion	SPC	113 min
May 14, 10:58 PM CDT	Mesoscale Discussion	SPC	2 hr
May 14, 11:17 PM CDT	Severe Thunderstorm Watch	SPC	5 hr
May 15, 1:06 AM CDT	Mesoscale Discussion	SPC	114 min
May 24, 3:33 AM CDT	Flash Flood Watch	EAX	61 hr
May 24, 1:13 PM CDT	Mesoscale Discussion	SPC	92 min
May 24, 8:24 PM CDT	Special Weather Statement	EAX	36 min
May 25, 9:34 AM CDT	River Flood Warning	EAX	21 days
May 25, 9:34 AM CDT	River Flood Warning	EAX	8 days
May 25, 2:15 PM CDT	Mesoscale Discussion	SPC	90 min
May 25, 2:58 PM CDT	Severe Thunderstorm Warning	EAX	32 min
May 25, 4:24 PM CDT	Special Weather Statement	EAX	51 min
May 25, 4:44 PM CDT	Severe Thunderstorm Warning	EAX	34 min
May 28, 10:54 AM CDT	Flash Flood Warning	EAX	4 hr
May 28, 12:20 PM CDT	Areal Flood Warning	EAX	24 hr
May 28, 1:33 PM CDT	Areal Flood Warning	EAX	6 hr
May 28, 2:36 PM CDT	Areal Flood Warning	EAX	21 hr
May 28, 3:02 PM CDT	Flash Flood Warning	EAX	3 hr
May 28, 7:17 PM CDT	Areal Flood Warning	EAX	6 hr
Jun 3, 1:45 PM CDT	Mesoscale Discussion	SPC	2 hr
Jun 3, 3:52 PM CDT	Severe Thunderstorm Watch	SPC	6 hr
Jun 3, 10:44 PM CDT	Mesoscale Discussion	SPC	2 hr
Jun 4, 12:03 AM CDT	Special Weather Statement	EAX	42 min
Jun 4, 12:52 AM CDT	Special Weather Statement	EAX	38 min
Jun 4, 12:54 AM CDT	Mesoscale Discussion	SPC	96 min
Jun 4, 1:52 AM CDT	Severe Thunderstorm Warning	EAX	38 min
Jun 4, 2:26 AM CDT	Severe Thunderstorm Warning	EAX	49 min
Jun 4, 3:04 AM CDT	Severe Thunderstorm Warning	EAX	4 min
Jun 4, 3:06 AM CDT	Severe Thunderstorm Warning	EAX	39 min
Jun 4, 3:30 AM CDT	Areal Flood Advisory	EAX	3 hr
Jun 4, 4:50 AM CDT	Areal Flood Warning	EAX	6 hr
Jun 4, 10:15 AM CDT	Areal Flood Warning	EAX	24 hr
Jun 4, 8:30 PM CDT	River Flood Warning	EAX	29 hr
Jun 4, 11:32 PM CDT	Severe Thunderstorm Watch	SPC	7 hr
Jun 5, 1:59 AM CDT	Mesoscale Discussion	SPC	91 min
Jun 5, 3:36 AM CDT	Severe Thunderstorm Warning	EAX	39 min
Jun 5, 4:11 AM CDT	Severe Thunderstorm Warning	EAX	49 min
Jun 5, 4:20 AM CDT	Severe Thunderstorm Warning	EAX	40 min
Jun 5, 4:54 AM CDT	Severe Thunderstorm Warning	EAX	36 min
Jun 9, 3:29 AM CDT	Wind Advisory	EAX	33 hr
Jun 15, 5:13 PM CDT	Special Weather Statement	EAX	32 min
Jun 19, 1:27 PM CDT	Special Weather Statement	EAX	33 min
Jun 22, 4:46 PM CDT	Special Weather Statement	EAX	29 min
Jun 26, 7:50 PM CDT	Severe Thunderstorm Watch	SPC	8 hr
Jun 27, 1:28 AM CDT	Mesoscale Discussion	SPC	2 hr
Jul 1, 5:01 AM CDT	Severe Thunderstorm Warning	EAX	44 min
Jul 1, 5:22 AM CDT	Severe Thunderstorm Warning	EAX	53 min
Jul 1, 5:40 AM CDT	Mesoscale Discussion	SPC	65 min
Jul 1, 6:14 AM CDT	Severe Thunderstorm Warning	EAX	61 min
Jul 9, 1:09 AM CDT	Severe Thunderstorm Watch	SPC	11 hr
Jul 11, 1:35 PM CDT	Severe Thunderstorm Watch	SPC	4 hr
Jul 14, 3:23 AM CDT	Heat Advisory	EAX	17 hr
Jul 16, 2:48 PM CDT	Heat Advisory	EAX	3 days
Jul 19, 3:00 PM CDT	Mesoscale Discussion	SPC	2 hr
Jul 26, 3:53 AM CDT	Heat Advisory	EAX	15 hr
Jul 27, 4:04 AM CDT	Areal Flood Advisory	EAX	6 hr
Jul 27, 8:31 AM CDT	Areal Flood Warning	EAX	6 hr
Jul 30, 10:02 AM CDT	River Flood Warning	EAX	3 days
Jul 30, 10:02 AM CDT	River Flood Warning	EAX	5 days
Jul 30, 7:12 PM CDT	Flash Flood Warning	EAX	5 hr
Jul 30, 8:24 PM CDT	Areal Flood Warning	EAX	3 hr
Jul 30, 8:37 PM CDT	Flash Flood Warning	EAX	8 hr
Jul 31, 12:08 AM CDT	Areal Flood Warning	EAX	3 days
Jul 31, 4:18 AM CDT	Areal Flood Warning	EAX	3 days
Aug 3, 10:23 AM CDT	Areal Flood Warning	EAX	24 hr
Aug 9, 3:34 AM CDT	Heat Advisory	EAX	16 hr
Aug 10, 2:10 PM CDT	Severe Thunderstorm Warning	EAX	65 min
Aug 10, 2:38 PM CDT	Mesoscale Discussion	SPC	2 hr
Aug 10, 2:39 PM CDT	Severe Thunderstorm Warning	EAX	66 min
Aug 10, 3:20 PM CDT	Severe Thunderstorm Warning	EAX	52 min
Aug 15, 6:41 AM CDT	Severe Thunderstorm Warning	EAX	49 min
Aug 15, 7:48 AM CDT	Severe Thunderstorm Warning	EAX	42 min
Aug 30, 2:12 AM CDT	Dense Fog Advisory	EAX	7 hr
Aug 31, 4:56 AM CDT	Mesoscale Discussion	SPC	2 hr
Sep 2, 2:14 AM CDT	Dense Fog Advisory	EAX	7 hr
Sep 3, 2:23 AM CDT	Dense Fog Advisory	EAX	7 hr
Sep 5, 10:45 AM CDT	Areal Flood Warning	EAX	3 hr
Sep 27, 10:53 AM CDT	Mesoscale Discussion	SPC	97 min
Oct 11, 12:58 PM CDT	Wind Advisory	EAX	15 hr
Oct 14, 3:59 AM CDT	Red Flag Warning	EAX	14 hr
Oct 15, 2:42 PM CDT	Frost Advisory	EAX	17 hr
Oct 16, 2:07 PM CDT	Wind Advisory	EAX	25 hr
Oct 16, 2:16 PM CDT	Red Flag Warning	EAX	29 hr
Oct 21, 3:08 PM CDT	Wind Advisory	EAX	26 hr
Oct 21, 9:15 PM CDT	Dense Fog Advisory	EAX	14 hr
Oct 23, 3:37 AM CDT	Freeze Warning	EAX	30 hr
Oct 25, 3:02 PM CDT	Winter Weather Advisory	EAX	40 hr
Nov 10, 8:52 AM CST	Mesoscale Discussion	SPC	113 min
Nov 14, 3:33 AM CST	Wind Advisory	EAX	35 hr
Nov 14, 5:14 PM CST	Tornado Watch	SPC	8 hr
Nov 14, 7:34 PM CST	Mesoscale Discussion	SPC	86 min
Nov 18, 2:34 PM CST	Wind Advisory	EAX	25 hr
Dec 7, 8:39 PM CST	Dense Fog Advisory	EAX	15 hr
Dec 22, 2:03 PM CST	Wind Advisory	EAX	31 hr
Dec 28, 3:29 AM CST	Winter Weather Advisory	EAX	48 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	23
Severe Thunderstorm Watch	8
Tornado Watch	1
Mesoscale Discussion	26
Special Weather Statement	11
Flooding
Areal Flood Warning	12
Flash Flood Warning	4
River Flood Warning	5
Flash Flood Watch	3
Areal Flood Advisory	2
Winter
Winter Storm Warning	1
Winter Storm Watch	2
Winter Weather Advisory	9
Heat
Heat Advisory	4
Cold
Freeze Warning	6
Frost Advisory	3
Wind and dust
Wind Advisory	11
Fire
Red Flag Warning	4
Fog and smoke
Dense Fog Advisory	10

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.