Alert archive / Missouri / Lafayette County

Weather alerts in Lafayette County, Missouri, 2009

162 weather alerts in 2009, 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 2009. Tap one for its archive.

Alerts: 162
Warnings: 41
Watches: 34
Advisories: 34
Busiest month: June43 alerts
Busiest day: May 15, 200911 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, 2009

	Warnings	With a report	False alarm ratio	Reports	Inside a warning	Mean lead time
Tornado warnings	0			0
Severe thunderstorm warnings	21	13	38%	3	100%	15 min
Flash flood warnings	2	1	50%	0

Each office's whole area, 2009

	Warnings	With a report	False alarm ratio	Reports	Inside a warning	Mean lead time
NWS Kansas City, MO: tornado warnings	29	10	66%	24	83%	14 min
NWS Kansas City, MO: severe thunderstorm warnings	251	122	51%	309	70%	17 min
NWS Kansas City, MO: flash flood warnings	53	32	40%	104	83%	156 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 12, 3:48 AM CST	Wind Advisory	EAX	18 hr
Jan 14, 4:28 AM CST	Wind Chill Advisory	EAX	32 hr
Feb 5, 3:20 AM CST	Red Flag Warning	EAX	14 hr
Feb 8, 3:21 PM CST	Wind Advisory	EAX	28 hr
Feb 9, 8:43 AM CST	Mesoscale Discussion	SPC	32 min
Feb 9, 8:49 AM CST	Severe Thunderstorm Watch	SPC	2 hr
Feb 9, 10:28 AM CST	Mesoscale Discussion	SPC	62 min
Feb 26, 6:57 AM CST	Mesoscale Discussion	SPC	93 min
Feb 26, 9:26 AM CST	Mesoscale Discussion	SPC	2 hr
Feb 26, 12:51 PM CST	Mesoscale Discussion	SPC	114 min
Feb 27, 3:04 PM CST	Winter Weather Advisory	EAX	25 hr
Mar 7, 12:44 AM CST	Mesoscale Discussion	SPC	2 hr
Mar 7, 6:31 PM CST	Mesoscale Discussion	SPC	59 min
Mar 7, 7:33 PM CST	Severe Thunderstorm Watch	SPC	7 hr
Mar 7, 9:40 PM CST	Flash Flood Watch	EAX	8 hr
Mar 7, 10:26 PM CST	Mesoscale Discussion	SPC	2 hr
Mar 8, 12:43 AM CST	Mesoscale Discussion	SPC	92 min
Mar 8, 5:56 AM CDT	Mesoscale Discussion	SPC	64 min
Mar 8, 6:32 AM CDT	Tornado Watch	SPC	7 hr
Mar 8, 6:43 AM CDT	Severe Thunderstorm Warning	EAX	47 min
Mar 8, 6:58 AM CDT	Severe Thunderstorm Warning	EAX	32 min
Mar 8, 7:23 AM CDT	Severe Thunderstorm Warning	EAX	37 min
Mar 9, 3:34 AM CDT	Flash Flood Watch	EAX	27 hr
Mar 9, 5:42 PM CDT	Mesoscale Discussion	SPC	93 min
Mar 9, 10:40 PM CDT	Areal Flood Advisory	EAX	6 hr
Mar 10, 6:49 AM CDT	Areal Flood Warning	EAX	36 hr
Mar 22, 3:47 PM CDT	Wind Advisory	EAX	31 hr
Mar 23, 4:01 PM CDT	Flash Flood Watch	EAX	21 hr
Mar 24, 2:28 AM CDT	Mesoscale Discussion	SPC	2 hr
Mar 24, 8:48 AM CDT	Severe Thunderstorm Warning	EAX	27 min
Mar 26, 11:22 AM CDT	Winter Storm Watch	EAX	18 hr
Mar 27, 5:02 AM CDT	Winter Storm Warning	EAX	42 hr
Mar 28, 3:13 PM CDT	Freeze Warning	EAX	18 hr
Mar 31, 3:00 PM CDT	Frost Advisory	EAX	13 hr
Apr 2, 2:58 PM CDT	Frost Advisory	EAX	18 hr
Apr 4, 6:20 PM CDT	Mesoscale Discussion	SPC	115 min
Apr 5, 3:52 AM CDT	Freeze Warning	EAX	29 hr
Apr 6, 3:35 AM CDT	Freeze Warning	EAX	29 hr
Apr 10, 3:43 AM CDT	Frost Advisory	EAX	28 hr
Apr 13, 2:27 PM CDT	Frost Advisory	EAX	18 hr
Apr 14, 3:20 AM CDT	Frost Advisory	EAX	24 hr
Apr 19, 4:58 AM CDT	Areal Flood Advisory	EAX	4 hr
Apr 25, 4:04 PM CDT	Flood Watch	EAX	43 hr
Apr 25, 4:30 PM CDT	Severe Thunderstorm Watch	SPC	6 hr
Apr 25, 7:17 PM CDT	Mesoscale Discussion	SPC	58 min
Apr 25, 10:09 PM CDT	Severe Thunderstorm Watch	SPC	6 hr
Apr 26, 2:10 AM CDT	Mesoscale Discussion	SPC	95 min
Apr 26, 6:14 PM CDT	Mesoscale Discussion	SPC	61 min
Apr 26, 8:21 PM CDT	Mesoscale Discussion	SPC	54 min
Apr 26, 11:15 PM CDT	Mesoscale Discussion	SPC	60 min
Apr 27, 9:38 AM CDT	Areal Flood Warning	EAX	23 hr
Apr 27, 10:46 AM CDT	River Flood Warning	EAX	5 days
Apr 27, 10:46 AM CDT	River Flood Warning	EAX	5 days
Apr 29, 4:17 AM CDT	Flash Flood Watch	EAX	24 hr
Apr 30, 8:24 AM CDT	Flash Flood Watch	EAX	8 hr
May 7, 1:44 PM CDT	Tornado Watch	SPC	6 hr
May 7, 7:37 PM CDT	Severe Thunderstorm Watch	SPC	6 hr
May 7, 9:29 PM CDT	Severe Thunderstorm Warning	EAX	31 min
May 12, 1:22 PM CDT	Mesoscale Discussion	SPC	53 min
May 13, 1:52 PM CDT	Mesoscale Discussion	SPC	23 min
May 13, 4:51 PM CDT	Severe Thunderstorm Watch	SPC	6 hr
May 13, 6:25 PM CDT	Severe Thunderstorm Warning	EAX	35 min
May 13, 6:30 PM CDT	Mesoscale Discussion	SPC	90 min
May 13, 7:03 PM CDT	Special Weather Statement	EAX	27 min
May 14, 3:22 PM CDT	Flash Flood Watch	EAX	31 hr
May 15, 2:03 AM CDT	Mesoscale Discussion	SPC	87 min
May 15, 7:42 AM CDT	Severe Thunderstorm Watch	SPC	5 hr
May 15, 12:50 PM CDT	Tornado Watch	SPC	7 hr
May 15, 3:26 PM CDT	Severe Thunderstorm Warning	EAX	34 min
May 15, 3:43 PM CDT	Mesoscale Discussion	SPC	62 min
May 15, 3:50 PM CDT	Flash Flood Warning	EAX	6 hr
May 15, 4:29 PM CDT	Flash Flood Warning	EAX	5 hr
May 15, 5:21 PM CDT	Special Weather Statement	EAX	24 min
May 15, 5:31 PM CDT	Mesoscale Discussion	SPC	119 min
May 15, 5:36 PM CDT	Severe Thunderstorm Warning	EAX	24 min
May 15, 6:59 PM CDT	Areal Flood Advisory	EAX	3 hr
May 15, 8:19 PM CDT	River Flood Warning	EAX	43 hr
May 15, 8:19 PM CDT	River Flood Warning	EAX	54 hr
May 15, 9:25 PM CDT	Areal Flood Warning	EAX	48 hr
May 26, 12:41 AM CDT	Areal Flood Advisory	EAX	3 hr
Jun 2, 3:48 AM CDT	Flash Flood Watch	EAX	14 hr
Jun 2, 2:14 PM CDT	Mesoscale Discussion	SPC	2 hr
Jun 7, 5:31 PM CDT	Mesoscale Discussion	SPC	59 min
Jun 7, 5:44 PM CDT	Tornado Watch	SPC	6 hr
Jun 7, 5:47 PM CDT	Severe Thunderstorm Warning	EAX	28 min
Jun 7, 6:01 PM CDT	Severe Thunderstorm Warning	EAX	29 min
Jun 7, 6:11 PM CDT	Severe Thunderstorm Warning	EAX	34 min
Jun 7, 6:33 PM CDT	Severe Thunderstorm Warning	EAX	27 min
Jun 7, 7:02 PM CDT	Severe Thunderstorm Warning	EAX	17 min
Jun 7, 11:09 PM CDT	Severe Thunderstorm Watch	SPC	6 hr
Jun 8, 3:25 AM CDT	Mesoscale Discussion	SPC	65 min
Jun 9, 3:56 AM CDT	Flash Flood Watch	EAX	24 hr
Jun 11, 2:13 AM CDT	Mesoscale Discussion	SPC	62 min
Jun 11, 2:24 AM CDT	Areal Flood Advisory	EAX	5 hr
Jun 12, 5:32 PM CDT	Mesoscale Discussion	SPC	58 min
Jun 15, 3:55 AM CDT	Mesoscale Discussion	SPC	65 min
Jun 15, 6:24 AM CDT	Mesoscale Discussion	SPC	96 min
Jun 15, 3:04 PM CDT	Flash Flood Watch	EAX	18 hr
Jun 15, 7:33 PM CDT	Mesoscale Discussion	SPC	87 min
Jun 15, 8:14 PM CDT	Severe Thunderstorm Watch	SPC	6 hr
Jun 15, 11:18 PM CDT	Mesoscale Discussion	SPC	87 min
Jun 15, 11:33 PM CDT	Areal Flood Advisory	EAX	12 hr
Jun 15, 11:54 PM CDT	Severe Thunderstorm Warning	EAX	36 min
Jun 16, 12:43 AM CDT	Areal Flood Advisory	EAX	6 days
Jun 16, 2:30 AM CDT	Mesoscale Discussion	SPC	60 min
Jun 16, 9:49 AM CDT	River Flood Warning	EAX	44 hr
Jun 16, 9:49 AM CDT	River Flood Warning	EAX	52 hr
Jun 17, 3:09 PM CDT	Tornado Watch	SPC	7 hr
Jun 17, 6:13 PM CDT	Severe Thunderstorm Warning	EAX	32 min
Jun 17, 6:39 PM CDT	Severe Thunderstorm Warning	EAX	36 min
Jun 17, 6:42 PM CDT	Mesoscale Discussion	SPC	2 hr
Jun 17, 7:13 PM CDT	Severe Thunderstorm Warning	EAX	32 min
Jun 19, 10:57 AM CDT	Mesoscale Discussion	SPC	93 min
Jun 21, 3:43 PM CDT	Heat Advisory	EAX	47 hr
Jun 22, 6:30 AM CDT	Special Weather Statement	EAX	30 min
Jun 22, 6:45 AM CDT	Areal Flood Advisory	EAX	3 hr
Jun 22, 1:37 PM CDT	Excessive Heat Warning	EAX	5 days
Jun 24, 4:33 PM CDT	Severe Thunderstorm Watch	SPC	5 hr
Jun 25, 9:01 AM CDT	Severe Thunderstorm Warning	EAX	44 min
Jun 25, 9:34 AM CDT	Special Weather Statement	EAX	26 min
Jun 27, 5:43 PM CDT	Mesoscale Discussion	SPC	62 min
Jun 27, 5:54 PM CDT	Severe Thunderstorm Watch	SPC	7 hr
Jun 27, 7:39 PM CDT	Mesoscale Discussion	SPC	2 hr
Jul 8, 2:16 AM CDT	Mesoscale Discussion	SPC	59 min
Jul 10, 5:38 AM CDT	Severe Thunderstorm Warning	EAX	37 min
Jul 12, 5:46 AM CDT	Severe Thunderstorm Watch	SPC	4 hr
Jul 12, 7:58 AM CDT	Mesoscale Discussion	SPC	62 min
Jul 12, 8:00 AM CDT	Severe Thunderstorm Warning	EAX	45 min
Jul 12, 8:39 AM CDT	Special Weather Statement	EAX	51 min
Jul 14, 3:05 PM CDT	Mesoscale Discussion	SPC	115 min
Jul 16, 1:58 PM CDT	Mesoscale Discussion	SPC	92 min
Jul 16, 2:23 PM CDT	Special Weather Statement	EAX	37 min
Jul 20, 3:26 PM CDT	Flash Flood Watch	EAX	13 hr
Jul 25, 1:20 AM CDT	Severe Thunderstorm Warning	EAX	40 min
Jul 25, 2:17 AM CDT	Mesoscale Discussion	SPC	88 min
Aug 4, 4:06 AM CDT	Severe Thunderstorm Watch	SPC	5 hr
Aug 7, 4:01 PM CDT	Heat Advisory	EAX	28 hr
Aug 16, 3:14 PM CDT	Flash Flood Watch	EAX	23 hr
Aug 17, 1:22 AM CDT	Mesoscale Discussion	SPC	83 min
Aug 17, 9:26 AM CDT	Areal Flood Advisory	EAX	5 hr
Aug 17, 9:44 AM CDT	Areal Flood Advisory	EAX	67 hr
Aug 18, 2:38 PM CDT	Flash Flood Watch	EAX	36 hr
Aug 29, 3:03 AM CDT	Dense Fog Advisory	EAX	6 hr
Sep 5, 10:04 PM CDT	Dense Fog Advisory	EAX	12 hr
Sep 6, 9:14 PM CDT	Dense Fog Advisory	EAX	13 hr
Sep 21, 4:13 AM CDT	Dense Fog Advisory	EAX	5 hr
Sep 30, 11:44 PM CDT	Mesoscale Discussion	SPC	91 min
Oct 8, 9:56 AM CDT	Areal Flood Advisory	EAX	6 hr
Oct 9, 3:58 PM CDT	Frost Advisory	EAX	17 hr
Oct 10, 4:01 AM CDT	Freeze Warning	EAX	24 hr
Oct 17, 3:37 AM CDT	Frost Advisory	EAX	29 hr
Oct 29, 10:38 AM CDT	Flash Flood Watch	EAX	16 hr
Oct 29, 3:39 PM CDT	Areal Flood Warning	EAX	51 hr
Oct 29, 5:27 PM CDT	Areal Flood Advisory	EAX	4 hr
Nov 17, 3:38 AM CST	Winter Weather Advisory	EAX	4 hr
Dec 7, 3:29 PM CST	Winter Weather Advisory	EAX	39 hr
Dec 9, 5:48 AM CST	Wind Advisory	EAX	6 hr
Dec 23, 3:37 AM CST	Winter Storm Watch	EAX	25 hr
Dec 23, 10:31 AM CST	Mesoscale Discussion	SPC	89 min
Dec 23, 3:58 PM CST	Winter Storm Warning	EAX	42 hr
Dec 24, 8:18 PM CST	Mesoscale Discussion	SPC	4 hr
Dec 25, 9:42 AM CST	Winter Weather Advisory	EAX	18 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	21
Severe Thunderstorm Watch	13
Tornado Watch	5
Mesoscale Discussion	47
Special Weather Statement	6
Flooding
Areal Flood Warning	4
Flash Flood Warning	2
River Flood Warning	6
Flash Flood Watch	13
Flood Watch	1
Areal Flood Advisory	12
Winter
Winter Storm Warning	2
Winter Storm Watch	2
Winter Weather Advisory	4
Heat
Excessive Heat Warning	1
Heat Advisory	2
Cold
Freeze Warning	4
Frost Advisory	7
Wind Chill Advisory	1
Wind and dust
Wind Advisory	4
Fire
Red Flag Warning	1
Fog and smoke
Dense Fog Advisory	4

The busiest days

Days with the most alerts issued, by UTC date.

Nearby

Alerts in force now Tornadoes on record Forecast The radar archive 2008 2010

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.