Weather alerts in Holt County, Missouri, 2009

159 weather alerts in 2009, from the National Weather Service and the Storm Prediction Center. An alert counts here when it covered this county.

Holt County and its neighbors

Each county as a circle sized by its count in 2009. Tap one for its archive.

Alerts: 159
Warnings: 35
Watches: 28
Advisories: 32
Busiest month: June52 alerts
Busiest day: June 7, 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.

0 of 3 tornado warnings covering Holt County in 2009 had a tornado report inside them.

Holt County, 2009

	Warnings	With a report	False alarm ratio	Reports	Inside a warning	Mean lead time
Tornado warnings	3	0	100%	0
Severe thunderstorm warnings	17	9	47%	17	41%	22 min
Flash flood warnings	3	3	0%	5	80%	105 min

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 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 11, 2:56 PM CST	Winter Storm Watch	EAX	23 hr
Feb 12, 2:16 PM CST	Winter Weather Advisory	EAX	31 hr
Feb 27, 3:04 PM CST	Winter Weather Advisory	EAX	25 hr
Feb 27, 6:22 PM CST	Mesoscale Discussion	SPC	4 hr
Mar 6, 9:17 PM CST	Mesoscale Discussion	SPC	118 min
Mar 7, 12:44 AM CST	Mesoscale Discussion	SPC	2 hr
Mar 22, 3:47 PM CDT	Wind Advisory	EAX	31 hr
Mar 23, 3:50 PM CDT	Tornado Watch	SPC	6 hr
Mar 23, 4:01 PM CDT	Flash Flood Watch	EAX	21 hr
Mar 23, 7:04 PM CDT	Severe Thunderstorm Warning	EAX	41 min
Mar 23, 8:12 PM CDT	Severe Thunderstorm Warning	EAX	33 min
Mar 23, 8:42 PM CDT	Severe Thunderstorm Warning	EAX	33 min
Apr 2, 6:16 AM CDT	Winter Weather Advisory	EAX	5 hr
Apr 4, 1:12 PM CDT	Mesoscale Discussion	SPC	2 hr
Apr 4, 6:20 PM CDT	Mesoscale Discussion	SPC	115 min
Apr 5, 3:51 AM CDT	Winter Weather Advisory	EAX	8 hr
Apr 5, 12:22 PM CDT	Wind Advisory	EAX	7 hr
Apr 25, 4:04 PM CDT	Flood Watch	EAX	43 hr
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, 12:48 PM CDT	Tornado Watch	SPC	4 hr
Apr 26, 2:41 PM CDT	Mesoscale Discussion	SPC	3 hr
Apr 26, 4:59 PM CDT	Special Weather Statement	EAX	31 min
Apr 26, 5:02 PM CDT	Tornado Watch	SPC	6 hr
Apr 26, 6:14 PM CDT	Mesoscale Discussion	SPC	61 min
Apr 26, 6:37 PM CDT	Areal Flood Advisory	EAX	6 hr
Apr 26, 6:38 PM CDT	Special Weather Statement	EAX	37 min
Apr 26, 7:02 PM CDT	Severe Thunderstorm Warning	EAX	28 min
Apr 26, 7:26 PM CDT	Severe Thunderstorm Warning	EAX	34 min
Apr 26, 8:21 PM CDT	Mesoscale Discussion	SPC	54 min
Apr 26, 8:50 PM CDT	River Flood Warning	EAX	14 hr
Apr 27, 12:34 AM CDT	Areal Flood Advisory	EAX	6 hr
Apr 27, 4:02 AM CDT	Areal Flood Warning	EAX	36 hr
May 7, 1:12 PM CDT	Mesoscale Discussion	SPC	93 min
May 7, 1:44 PM CDT	Tornado Watch	SPC	6 hr
May 7, 3:55 PM CDT	Mesoscale Discussion	SPC	65 min
May 7, 5:42 PM CDT	Mesoscale Discussion	SPC	2 hr
May 7, 7:37 PM CDT	Severe Thunderstorm Watch	SPC	6 hr
May 12, 1:22 PM CDT	Mesoscale Discussion	SPC	53 min
May 12, 2:47 PM CDT	Special Weather Statement	EAX	28 min
May 15, 2:03 AM CDT	Mesoscale Discussion	SPC	87 min
May 15, 7:14 AM CDT	Mesoscale Discussion	SPC	91 min
May 15, 7:42 AM CDT	Severe Thunderstorm Watch	SPC	5 hr
May 15, 11:14 AM CDT	Severe Thunderstorm Warning	EAX	31 min
May 15, 11:48 AM CDT	Mesoscale Discussion	SPC	57 min
May 15, 12:16 PM CDT	Flash Flood Warning	EAX	3 hr
Jun 1, 2:55 PM CDT	Mesoscale Discussion	SPC	2 hr
Jun 1, 3:29 PM CDT	Severe Thunderstorm Watch	SPC	8 hr
Jun 1, 3:59 PM CDT	Severe Thunderstorm Warning	EAX	46 min
Jun 1, 4:39 PM CDT	Severe Thunderstorm Warning	EAX	51 min
Jun 1, 4:56 PM CDT	Flash Flood Warning	EAX	6 hr
Jun 1, 5:14 PM CDT	Tornado Warning	EAX	31 min
Jun 1, 5:25 PM CDT	Mesoscale Discussion	SPC	2 hr
Jun 1, 6:52 PM CDT	Mesoscale Discussion	SPC	83 min
Jun 1, 9:27 PM CDT	Mesoscale Discussion	SPC	63 min
Jun 1, 11:02 PM CDT	Areal Flood Warning	EAX	10 hr
Jun 6, 2:22 AM CDT	Mesoscale Discussion	SPC	23 min
Jun 6, 3:12 PM CDT	Mesoscale Discussion	SPC	2 hr
Jun 6, 11:16 PM CDT	Severe Thunderstorm Watch	SPC	6 hr
Jun 7, 12:32 AM CDT	Special Weather Statement	EAX	28 min
Jun 7, 12:44 AM CDT	Mesoscale Discussion	SPC	61 min
Jun 7, 4:45 AM CDT	Mesoscale Discussion	SPC	30 min
Jun 7, 2:36 PM CDT	Mesoscale Discussion	SPC	114 min
Jun 7, 3:45 PM CDT	Tornado Watch	SPC	7 hr
Jun 7, 5:08 PM CDT	Special Weather Statement	EAX	37 min
Jun 7, 5:54 PM CDT	Severe Thunderstorm Warning	EAX	36 min
Jun 7, 6:23 PM CDT	Tornado Warning	EAX	37 min
Jun 7, 6:47 PM CDT	Severe Thunderstorm Warning	EAX	28 min
Jun 7, 6:49 PM CDT	Tornado Warning	EAX	26 min
Jun 7, 10:22 PM CDT	Mesoscale Discussion	SPC	53 min
Jun 7, 10:53 PM CDT	Tornado Watch	SPC	5 hr
Jun 8, 2:30 AM CDT	Mesoscale Discussion	SPC	60 min
Jun 12, 5:32 PM CDT	Mesoscale Discussion	SPC	58 min
Jun 15, 1:08 AM CDT	Areal Flood Advisory	EAX	6 hr
Jun 15, 2:48 AM CDT	Flash Flood Warning	EAX	5 hr
Jun 15, 7:31 AM CDT	Areal Flood Warning	EAX	10 hr
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, 9:32 PM CDT	Mesoscale Discussion	SPC	88 min
Jun 15, 9:51 PM CDT	Severe Thunderstorm Warning	EAX	28 min
Jun 15, 10:12 PM CDT	Severe Thunderstorm Warning	EAX	33 min
Jun 15, 11:18 PM CDT	Mesoscale Discussion	SPC	87 min
Jun 16, 2:10 AM CDT	Areal Flood Advisory	EAX	8 hr
Jun 16, 2:30 AM CDT	Mesoscale Discussion	SPC	60 min
Jun 17, 12:52 PM CDT	Tornado Watch	SPC	8 hr
Jun 17, 2:47 PM CDT	Mesoscale Discussion	SPC	28 min
Jun 17, 4:28 PM CDT	Severe Thunderstorm Warning	EAX	47 min
Jun 17, 5:43 PM CDT	Mesoscale Discussion	SPC	92 min
Jun 19, 12:37 PM CDT	Mesoscale Discussion	SPC	83 min
Jun 19, 1:36 PM CDT	Severe Thunderstorm Watch	SPC	4 hr
Jun 21, 12:56 AM CDT	Mesoscale Discussion	SPC	94 min
Jun 21, 3:43 PM CDT	Heat Advisory	EAX	47 hr
Jun 22, 1:37 PM CDT	Excessive Heat Warning	EAX	5 days
Jun 23, 5:52 PM CDT	Severe Thunderstorm Watch	SPC	4 hr
Jun 24, 3:36 PM CDT	Mesoscale Discussion	SPC	114 min
Jun 24, 4:33 PM CDT	Severe Thunderstorm Watch	SPC	5 hr
Jun 25, 3:39 AM CDT	Heat Advisory	EAX	63 hr
Jul 3, 6:01 PM CDT	Areal Flood Advisory	EAX	6 hr
Jul 3, 8:56 PM CDT	Areal Flood Advisory	EAX	5 hr
Jul 8, 2:16 AM CDT	Mesoscale Discussion	SPC	59 min
Jul 9, 9:32 AM CDT	Severe Thunderstorm Watch	SPC	4 hr
Jul 9, 11:54 AM CDT	Mesoscale Discussion	SPC	96 min
Jul 10, 2:28 AM CDT	Mesoscale Discussion	SPC	62 min
Jul 10, 3:11 AM CDT	Special Weather Statement	EAX	34 min
Jul 10, 3:51 AM CDT	Severe Thunderstorm Warning	EAX	39 min
Jul 14, 3:05 PM CDT	Mesoscale Discussion	SPC	115 min
Aug 4, 1:10 AM CDT	Severe Thunderstorm Watch	SPC	6 hr
Aug 4, 3:16 AM CDT	Special Weather Statement	EAX	29 min
Aug 4, 4:55 AM CDT	Areal Flood Advisory	EAX	4 hr
Aug 4, 5:28 AM CDT	Severe Thunderstorm Warning	EAX	47 min
Aug 4, 5:49 AM CDT	Mesoscale Discussion	SPC	56 min
Aug 4, 5:58 AM CDT	Severe Thunderstorm Warning	EAX	47 min
Aug 7, 4:01 PM CDT	Heat Advisory	EAX	28 hr
Aug 9, 1:18 PM CDT	Mesoscale Discussion	SPC	27 min
Aug 9, 3:44 PM CDT	Severe Thunderstorm Watch	SPC	6 hr
Aug 9, 5:49 PM CDT	Mesoscale Discussion	SPC	86 min
Aug 9, 6:53 PM CDT	Special Weather Statement	EAX	37 min
Aug 9, 11:42 PM CDT	Special Weather Statement	EAX	33 min
Aug 16, 3:14 PM CDT	Flash Flood Watch	EAX	23 hr
Aug 17, 1:06 AM CDT	Severe Thunderstorm Warning	EAX	24 min
Aug 17, 1:22 AM CDT	Mesoscale Discussion	SPC	83 min
Aug 17, 1:42 AM CDT	Special Weather Statement	EAX	33 min
Aug 17, 9:12 AM CDT	Areal Flood Advisory	EAX	5 hr
Aug 19, 5:19 PM CDT	Mesoscale Discussion	SPC	26 min
Aug 19, 5:32 PM CDT	Severe Thunderstorm Watch	SPC	6 hr
Aug 19, 10:42 PM CDT	River Flood Warning	EAX	6 hr
Sep 6, 9:14 PM CDT	Dense Fog Advisory	EAX	13 hr
Sep 21, 9:46 AM CDT	Areal Flood Advisory	EAX	6 hr
Sep 30, 11:44 PM CDT	Mesoscale Discussion	SPC	91 min
Oct 2, 4:02 AM CDT	Wind Advisory	EAX	11 hr
Oct 9, 3:58 PM CDT	Freeze Warning	EAX	17 hr
Oct 10, 4:01 AM CDT	Freeze Warning	EAX	24 hr
Oct 10, 5:56 AM CDT	Mesoscale Discussion	SPC	5 hr
Nov 15, 2:43 PM CST	Winter Weather Advisory	EAX	32 hr
Nov 16, 12:12 PM CST	Mesoscale Discussion	SPC	4 hr
Nov 20, 3:43 AM CST	Dense Fog Advisory	EAX	6 hr
Nov 20, 10:07 AM CST	Dense Fog Advisory	EAX	113 min
Nov 20, 9:26 PM CST	Dense Fog Advisory	EAX	12 hr
Dec 6, 4:30 AM CST	Winter Storm Watch	EAX	35 hr
Dec 7, 3:29 PM CST	Winter Storm Warning	EAX	39 hr
Dec 8, 11:22 AM CST	Mesoscale Discussion	SPC	5 hr
Dec 8, 2:17 PM CST	Blizzard Warning	EAX	19 hr
Dec 8, 9:38 PM CST	Mesoscale Discussion	SPC	6 hr
Dec 9, 9:03 AM CST	Winter Weather Advisory	EAX	9 hr
Dec 9, 3:39 PM CST	Wind Chill Advisory	EAX	17 hr
Dec 13, 4:01 AM CST	Freezing Fog Advisory	EAX	5 hr
Dec 14, 5:06 AM CST	Winter Weather Advisory	EAX	5 hr
Dec 23, 3:37 AM CST	Winter Storm Watch	EAX	25 hr
Dec 23, 3:58 PM CST	Winter Storm Warning	EAX	42 hr
Dec 24, 1:32 PM CST	Mesoscale Discussion	SPC	4 hr
Dec 24, 4:26 PM CST	Blizzard Warning	EAX	17 hr
Dec 24, 11:54 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	17
Tornado Warning	3
Severe Thunderstorm Watch	14
Tornado Watch	7
Mesoscale Discussion	54
Special Weather Statement	10
Flooding
Areal Flood Warning	3
Flash Flood Warning	3
River Flood Warning	2
Flash Flood Watch	3
Flood Watch	1
Areal Flood Advisory	9
Winter
Blizzard Warning	2
Winter Storm Warning	2
Winter Storm Watch	3
Winter Weather Advisory	8
Heat
Excessive Heat Warning	1
Heat Advisory	3
Cold
Freeze Warning	2
Wind Chill Advisory	2
Wind and dust
Wind Advisory	5
Fog and smoke
Dense Fog Advisory	4
Freezing Fog Advisory	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 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.