Alert archive / Missouri / Monroe County

Weather alerts in Monroe County, Missouri, 2010

219 weather alerts in 2010, from the National Weather Service and the Storm Prediction Center. An alert counts here when it covered this county.

Monroe County and its neighbors

Each county as a circle sized by its count in 2010. Tap one for its archive.

Alerts: 219
Warnings: 68
Watches: 50
Advisories: 46
Busiest month: June51 alerts
Busiest day: September 19, 201012 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 3 tornado warnings covering Monroe County in 2010 had a tornado report inside them.

Monroe County, 2010

	Warnings	With a report	False alarm ratio	Reports	Inside a warning	Mean lead time
Tornado warnings	3	1	67%	0
Severe thunderstorm warnings	24	13	46%	5	80%	22 min
Flash flood warnings	14	3	79%	3	100%	210 min

Each office's whole area, 2010

	Warnings	With a report	False alarm ratio	Reports	Inside a warning	Mean lead time
NWS St. Louis, MO: tornado warnings	94	16	83%	43	84%	33 min
NWS St. Louis, MO: severe thunderstorm warnings	301	122	59%	404	62%	23 min
NWS St. Louis, MO: flash flood warnings	112	44	61%	122	73%	122 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, 3:30 PM CST	Wind Chill Advisory	LSX	20 hr
Jan 4, 3:25 PM CST	Wind Chill Advisory	LSX	19 hr
Jan 5, 3:50 PM CST	Winter Storm Watch	LSX	12 hr
Jan 6, 4:16 AM CST	Winter Storm Warning	LSX	24 hr
Jan 6, 4:16 AM CST	Winter Weather Advisory	LSX	37 hr
Jan 7, 4:16 AM CST	Wind Chill Advisory	LSX	24 hr
Jan 7, 3:54 PM CST	Wind Chill Advisory	LSX	43 hr
Jan 10, 3:58 AM CST	Wind Chill Advisory	LSX	6 hr
Jan 15, 3:42 PM CST	Freezing Fog Advisory	LSX	20 hr
Jan 16, 2:33 PM CST	Freezing Fog Advisory	LSX	21 hr
Jan 17, 2:12 PM CST	Dense Fog Advisory	LSX	22 hr
Jan 18, 3:00 PM CST	Dense Fog Advisory	LSX	21 hr
Jan 20, 3:55 PM CST	Dense Fog Advisory	LSX	17 hr
Feb 4, 4:08 AM CST	Winter Weather Advisory	LSX	44 hr
Feb 6, 4:18 AM CST	Winter Storm Watch	LSX	36 hr
Feb 7, 3:55 PM CST	Winter Weather Advisory	LSX	45 hr
Feb 12, 3:29 PM CST	Winter Weather Advisory	LSX	63 hr
Feb 20, 4:09 AM CST	Winter Storm Watch	LSX	12 hr
Feb 20, 3:51 PM CST	Winter Weather Advisory	LSX	32 hr
Mar 18, 5:39 AM CDT	Dense Fog Advisory	LSX	4 hr
Mar 19, 3:41 PM CDT	Winter Weather Advisory	LSX	42 hr
Mar 20, 11:36 PM CDT	Mesoscale Discussion	SPC	5 hr
Mar 30, 2:47 PM CDT	Fire Weather Watch	LSX	20 hr
Apr 2, 8:28 AM CDT	Mesoscale Discussion	SPC	92 min
Apr 4, 11:02 AM CDT	Mesoscale Discussion	SPC	88 min
Apr 4, 2:22 PM CDT	Mesoscale Discussion	SPC	113 min
Apr 4, 3:34 PM CDT	Tornado Watch	SPC	8 hr
Apr 4, 6:23 PM CDT	Mesoscale Discussion	SPC	67 min
Apr 4, 7:16 PM CDT	Tornado Warning	LSX	44 min
Apr 4, 7:55 PM CDT	Tornado Warning	LSX	35 min
Apr 5, 11:11 AM CDT	Mesoscale Discussion	SPC	64 min
Apr 5, 12:28 PM CDT	Mesoscale Discussion	SPC	62 min
Apr 5, 4:04 PM CDT	Mesoscale Discussion	SPC	56 min
Apr 6, 9:28 PM CDT	Severe Thunderstorm Watch	SPC	6 hr
Apr 6, 11:24 PM CDT	Mesoscale Discussion	SPC	66 min
Apr 8, 4:16 AM CDT	Frost Advisory	LSX	29 hr
Apr 23, 7:06 PM CDT	Tornado Watch	SPC	5 hr
Apr 24, 11:05 AM CDT	Flash Flood Watch	LSX	14 hr
Apr 24, 5:20 PM CDT	Areal Flood Advisory	LSX	6 hr
Apr 24, 6:13 PM CDT	Severe Thunderstorm Warning	LSX	47 min
Apr 24, 7:36 PM CDT	Flash Flood Warning	LSX	6 hr
Apr 24, 8:15 PM CDT	River Flood Warning	LSX	3 days
Apr 25, 1:30 AM CDT	Areal Flood Warning	LSX	9 hr
Apr 25, 10:13 AM CDT	Areal Flood Warning	LSX	12 hr
Apr 30, 9:18 AM CDT	Mesoscale Discussion	SPC	57 min
Apr 30, 10:20 AM CDT	Severe Thunderstorm Watch	SPC	5 hr
May 3, 12:54 PM CDT	Mesoscale Discussion	SPC	96 min
May 8, 4:02 AM CDT	Frost Advisory	LSX	27 hr
May 10, 3:42 PM CDT	Flash Flood Watch	LSX	12 hr
May 11, 1:11 PM CDT	River Flood Warning	LSX	2 hr
May 12, 4:49 AM CDT	Flash Flood Watch	LSX	35 hr
May 12, 5:14 PM CDT	Mesoscale Discussion	SPC	91 min
May 12, 8:00 PM CDT	Mesoscale Discussion	SPC	90 min
May 12, 8:23 PM CDT	Severe Thunderstorm Watch	SPC	4 hr
May 12, 11:58 PM CDT	Severe Thunderstorm Watch	SPC	5 hr
May 13, 4:23 AM CDT	Mesoscale Discussion	SPC	67 min
May 13, 6:05 PM CDT	River Flood Warning	LSX	4 hr
May 18, 3:08 PM CDT	Flash Flood Watch	LSX	60 hr
May 21, 11:26 PM CDT	Dense Fog Advisory	LSX	7 hr
Jun 1, 6:25 PM CDT	Severe Thunderstorm Watch	SPC	8 hr
Jun 1, 9:17 PM CDT	Mesoscale Discussion	SPC	118 min
Jun 1, 11:36 PM CDT	Mesoscale Discussion	SPC	54 min
Jun 2, 12:06 AM CDT	Severe Thunderstorm Warning	LSX	54 min
Jun 4, 3:54 PM CDT	Severe Thunderstorm Watch	SPC	7 hr
Jun 4, 7:15 PM CDT	Severe Thunderstorm Warning	LSX	45 min
Jun 4, 7:36 PM CDT	Mesoscale Discussion	SPC	54 min
Jun 4, 10:27 PM CDT	Mesoscale Discussion	SPC	33 min
Jun 4, 10:58 PM CDT	Severe Thunderstorm Watch	SPC	5 hr
Jun 5, 9:20 PM CDT	Mesoscale Discussion	SPC	115 min
Jun 6, 2:58 PM CDT	Flash Flood Watch	LSX	61 hr
Jun 8, 8:58 AM CDT	Severe Thunderstorm Warning	LSX	32 min
Jun 8, 8:18 PM CDT	Areal Flood Advisory	LSX	6 hr
Jun 9, 12:09 AM CDT	River Flood Warning	LSX	8 hr
Jun 9, 9:31 AM CDT	River Flood Warning	LSX	24 hr
Jun 12, 12:24 PM CDT	Mesoscale Discussion	SPC	96 min
Jun 12, 1:31 PM CDT	Severe Thunderstorm Watch	SPC	5 hr
Jun 13, 4:34 AM CDT	Flash Flood Watch	LSX	32 hr
Jun 13, 11:47 AM CDT	Severe Thunderstorm Warning	LSX	43 min
Jun 13, 11:55 AM CDT	Mesoscale Discussion	SPC	65 min
Jun 13, 12:24 PM CDT	Severe Thunderstorm Watch	SPC	7 hr
Jun 13, 2:14 PM CDT	Mesoscale Discussion	SPC	61 min
Jun 13, 2:35 PM CDT	Severe Thunderstorm Warning	LSX	55 min
Jun 13, 3:17 PM CDT	Severe Thunderstorm Warning	LSX	43 min
Jun 13, 3:41 PM CDT	Mesoscale Discussion	SPC	64 min
Jun 13, 11:53 PM CDT	Flash Flood Warning	LSX	6 hr
Jun 14, 1:31 AM CDT	Mesoscale Discussion	SPC	119 min
Jun 14, 6:01 AM CDT	Areal Flood Warning	LSX	6 hr
Jun 14, 11:49 AM CDT	Areal Flood Warning	LSX	6 hr
Jun 14, 6:13 PM CDT	Areal Flood Warning	LSX	12 hr
Jun 16, 9:41 AM CDT	River Flood Warning	LSX	10 hr
Jun 18, 4:14 AM CDT	Heat Advisory	LSX	6 days
Jun 18, 8:05 PM CDT	Severe Thunderstorm Watch	SPC	4 hr
Jun 18, 10:46 PM CDT	Mesoscale Discussion	SPC	89 min
Jun 18, 11:38 PM CDT	Severe Thunderstorm Watch	SPC	5 hr
Jun 18, 11:50 PM CDT	Severe Thunderstorm Warning	LSX	40 min
Jun 19, 1:07 PM CDT	Mesoscale Discussion	SPC	53 min
Jun 19, 1:48 PM CDT	Severe Thunderstorm Watch	SPC	5 hr
Jun 21, 7:39 AM CDT	Mesoscale Discussion	SPC	96 min
Jun 21, 12:28 PM CDT	Mesoscale Discussion	SPC	62 min
Jun 21, 12:58 PM CDT	Severe Thunderstorm Watch	SPC	4 hr
Jun 21, 4:10 PM CDT	Mesoscale Discussion	SPC	35 min
Jun 21, 4:36 PM CDT	Tornado Watch	SPC	5 hr
Jun 21, 7:00 PM CDT	Mesoscale Discussion	SPC	60 min
Jun 21, 9:51 PM CDT	Severe Thunderstorm Watch	SPC	7 hr
Jun 23, 2:44 PM CDT	Severe Thunderstorm Watch	SPC	7 hr
Jun 23, 6:10 PM CDT	Severe Thunderstorm Warning	LSX	50 min
Jun 23, 6:29 PM CDT	Mesoscale Discussion	SPC	2 hr
Jun 27, 5:58 AM CDT	Mesoscale Discussion	SPC	92 min
Jun 27, 3:18 PM CDT	Mesoscale Discussion	SPC	57 min
Jun 27, 6:09 PM CDT	Areal Flood Advisory	LSX	4 hr
Jul 5, 7:55 PM CDT	Areal Flood Advisory	LSX	3 hr
Jul 5, 9:12 PM CDT	Areal Flood Advisory	LSX	3 hr
Jul 6, 4:25 AM CDT	Areal Flood Advisory	LSX	4 hr
Jul 6, 1:28 PM CDT	Areal Flood Advisory	LSX	5 hr
Jul 13, 12:04 AM CDT	Flash Flood Warning	LSX	6 hr
Jul 13, 2:35 PM CDT	Heat Advisory	LSX	52 hr
Jul 16, 4:06 PM CDT	Heat Advisory	LSX	38 hr
Jul 17, 1:50 AM CDT	Flash Flood Warning	LSX	6 hr
Jul 18, 3:05 AM CDT	Severe Thunderstorm Watch	SPC	5 hr
Jul 18, 4:58 AM CDT	Mesoscale Discussion	SPC	62 min
Jul 18, 5:23 AM CDT	Severe Thunderstorm Warning	LSX	52 min
Jul 18, 5:58 AM CDT	Mesoscale Discussion	SPC	32 min
Jul 18, 6:13 AM CDT	Severe Thunderstorm Warning	LSX	47 min
Jul 18, 6:46 AM CDT	Severe Thunderstorm Warning	LSX	44 min
Jul 18, 7:19 AM CDT	Mesoscale Discussion	SPC	26 min
Jul 18, 7:28 AM CDT	Areal Flood Advisory	LSX	4 hr
Jul 19, 10:38 AM CDT	Severe Thunderstorm Watch	SPC	6 hr
Jul 19, 10:42 AM CDT	Severe Thunderstorm Warning	LSX	63 min
Jul 19, 12:28 PM CDT	Areal Flood Advisory	LSX	4 hr
Jul 19, 2:09 PM CDT	Mesoscale Discussion	SPC	2 hr
Jul 19, 7:44 PM CDT	Severe Thunderstorm Watch	SPC	6 hr
Jul 20, 1:05 AM CDT	Severe Thunderstorm Warning	LSX	40 min
Jul 20, 1:46 AM CDT	Severe Thunderstorm Warning	LSX	44 min
Jul 20, 2:17 AM CDT	Tornado Warning	LSX	43 min
Jul 20, 4:33 AM CDT	Flash Flood Warning	LSX	6 hr
Jul 20, 5:08 AM CDT	Flash Flood Watch	LSX	22 hr
Jul 20, 5:46 AM CDT	Mesoscale Discussion	SPC	89 min
Jul 20, 9:41 AM CDT	River Flood Warning	LSX	36 hr
Jul 20, 10:54 AM CDT	Flash Flood Warning	LSX	12 hr
Jul 20, 3:32 PM CDT	Severe Thunderstorm Watch	SPC	7 hr
Jul 20, 10:28 PM CDT	Flash Flood Warning	LSX	5 hr
Jul 21, 3:14 AM CDT	Areal Flood Warning	LSX	9 hr
Jul 21, 11:55 AM CDT	Areal Flood Warning	LSX	7 hr
Jul 21, 3:39 PM CDT	Heat Advisory	LSX	3 days
Jul 22, 8:58 AM CDT	River Flood Warning	LSX	47 hr
Jul 24, 2:22 PM CDT	Mesoscale Discussion	SPC	83 min
Jul 24, 3:32 PM CDT	Severe Thunderstorm Watch	SPC	6 hr
Jul 26, 6:07 PM CDT	Flash Flood Warning	LSX	2 hr
Jul 28, 11:51 PM CDT	Areal Flood Advisory	LSX	6 hr
Jul 30, 1:49 PM CDT	Severe Thunderstorm Watch	SPC	7 hr
Jul 30, 2:15 PM CDT	Flash Flood Watch	LSX	14 hr
Jul 30, 4:37 PM CDT	Flash Flood Warning	LSX	6 hr
Jul 31, 4:47 AM CDT	River Flood Warning	LSX	6 hr
Aug 1, 3:13 PM CDT	Heat Advisory	LSX	3 days
Aug 4, 2:27 PM CDT	Mesoscale Discussion	SPC	33 min
Aug 4, 3:12 PM CDT	Severe Thunderstorm Watch	SPC	6 hr
Aug 6, 2:56 PM CDT	Excessive Heat Watch	LSX	49 hr
Aug 8, 3:55 AM CDT	Excessive Heat Warning	LSX	7 days
Aug 13, 6:19 PM CDT	Severe Thunderstorm Warning	LSX	41 min
Aug 13, 9:34 PM CDT	Mesoscale Discussion	SPC	56 min
Aug 20, 2:39 AM CDT	Flash Flood Watch	LSX	25 hr
Aug 20, 1:58 PM CDT	Severe Thunderstorm Watch	SPC	8 hr
Aug 20, 3:56 PM CDT	Severe Thunderstorm Warning	LSX	49 min
Aug 20, 5:18 PM CDT	Severe Thunderstorm Warning	LSX	57 min
Aug 20, 5:20 PM CDT	Mesoscale Discussion	SPC	85 min
Aug 20, 6:59 PM CDT	Flash Flood Warning	LSX	6 hr
Aug 20, 7:46 PM CDT	Mesoscale Discussion	SPC	59 min
Aug 20, 10:42 PM CDT	River Flood Warning	LSX	46 hr
Aug 21, 12:36 AM CDT	Areal Flood Warning	LSX	6 hr
Sep 2, 4:25 PM CDT	Mesoscale Discussion	SPC	65 min
Sep 2, 7:12 PM CDT	Mesoscale Discussion	SPC	2 hr
Sep 10, 11:45 PM CDT	Areal Flood Advisory	LSX	4 hr
Sep 15, 4:18 AM CDT	Flash Flood Watch	LSX	11 hr
Sep 18, 1:15 PM CDT	Mesoscale Discussion	SPC	2 hr
Sep 18, 2:21 PM CDT	Severe Thunderstorm Watch	SPC	8 hr
Sep 18, 5:27 PM CDT	Severe Thunderstorm Warning	LSX	48 min
Sep 18, 6:14 PM CDT	Severe Thunderstorm Warning	LSX	46 min
Sep 18, 6:33 PM CDT	Areal Flood Advisory	LSX	6 hr
Sep 18, 9:25 PM CDT	Severe Thunderstorm Watch	SPC	8 hr
Sep 19, 2:58 AM CDT	Flash Flood Warning	LSX	6 hr
Sep 19, 3:24 AM CDT	Mesoscale Discussion	SPC	66 min
Sep 19, 3:27 AM CDT	Severe Thunderstorm Warning	LSX	48 min
Sep 19, 4:00 AM CDT	Severe Thunderstorm Watch	SPC	6 hr
Sep 19, 4:08 AM CDT	Flash Flood Warning	LSX	6 hr
Sep 19, 5:18 AM CDT	Flash Flood Warning	LSX	6 hr
Sep 19, 6:14 AM CDT	Mesoscale Discussion	SPC	61 min
Sep 19, 9:07 AM CDT	Flash Flood Warning	LSX	112 min
Sep 19, 11:17 AM CDT	Areal Flood Warning	LSX	4 hr
Sep 19, 2:53 PM CDT	Areal Flood Warning	LSX	6 hr
Sep 19, 3:03 PM CDT	River Flood Warning	LSX	43 hr
Sep 19, 9:02 PM CDT	Areal Flood Warning	LSX	12 hr
Sep 21, 1:54 PM CDT	Severe Thunderstorm Watch	SPC	7 hr
Sep 21, 5:59 PM CDT	Mesoscale Discussion	SPC	91 min
Sep 21, 7:52 PM CDT	Mesoscale Discussion	SPC	53 min
Sep 22, 10:29 AM CDT	River Flood Warning	LSX	10 hr
Sep 23, 3:49 AM CDT	Flash Flood Watch	LSX	23 hr
Oct 2, 4:20 AM CDT	Frost Advisory	LSX	28 hr
Oct 3, 3:48 PM CDT	Frost Advisory	LSX	16 hr
Oct 23, 3:22 PM CDT	Tornado Watch	SPC	3 hr
Oct 25, 3:22 PM CDT	Wind Advisory	LSX	26 hr
Oct 25, 9:36 PM CDT	Mesoscale Discussion	SPC	24 min
Oct 25, 10:03 PM CDT	Tornado Watch	SPC	9 hr
Oct 25, 11:45 PM CDT	Severe Thunderstorm Warning	LSX	45 min
Oct 26, 12:08 AM CDT	Severe Thunderstorm Warning	LSX	52 min
Oct 26, 1:04 AM CDT	Severe Thunderstorm Warning	LSX	41 min
Oct 26, 2:21 AM CDT	Mesoscale Discussion	SPC	114 min
Oct 27, 3:53 PM CDT	Freeze Watch	LSX	12 hr
Oct 28, 3:47 AM CDT	Freeze Warning	LSX	29 hr
Nov 7, 11:15 AM CST	Red Flag Warning	LSX	6 hr
Nov 22, 10:50 AM CST	Mesoscale Discussion	SPC	85 min
Nov 22, 11:23 AM CST	Tornado Watch	SPC	7 hr
Nov 22, 2:10 PM CST	Mesoscale Discussion	SPC	95 min
Dec 11, 4:15 AM CST	Winter Weather Advisory	LSX	32 hr
Dec 11, 4:09 PM CST	Wind Advisory	LSX	29 hr
Dec 12, 4:19 AM CST	Wind Chill Advisory	LSX	30 hr
Dec 15, 4:00 AM CST	Winter Weather Advisory	LSX	32 hr
Dec 23, 12:07 PM CST	Winter Weather Advisory	LSX	40 hr
Dec 27, 1:17 AM CST	Dense Fog Advisory	LSX	9 hr
Dec 31, 12:44 AM CST	Mesoscale Discussion	SPC	61 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	24
Tornado Warning	3
Severe Thunderstorm Watch	27
Tornado Watch	6
Mesoscale Discussion	55
Flooding
Areal Flood Warning	11
Flash Flood Warning	14
River Flood Warning	12
Flash Flood Watch	11
Areal Flood Advisory	12
Winter
Winter Storm Warning	1
Winter Storm Watch	3
Winter Weather Advisory	9
Heat
Excessive Heat Warning	1
Excessive Heat Watch	1
Heat Advisory	5
Cold
Freeze Warning	1
Freeze Watch	1
Frost Advisory	4
Wind Chill Advisory	6
Wind and dust
Wind Advisory	2
Fire
Red Flag Warning	1
Fire Weather Watch	1
Fog and smoke
Dense Fog Advisory	6
Freezing Fog Advisory	2

The busiest days

Days with the most alerts issued, by UTC date.

Nearby

Alerts in force now Tornadoes on record Forecast The radar archive 2009 2011

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.