Weather alerts in Polk County, Missouri, 2013

176 weather alerts in 2013, from the National Weather Service and the Storm Prediction Center. An alert counts here when it covered this county.

Polk County and its neighbors

Each county as a circle sized by its count in 2013. Tap one for its archive.

Alerts: 176
Warnings: 51
Watches: 27
Advisories: 45
Busiest month: August37 alerts
Busiest day: August 3, 201313 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 4 tornado warnings covering Polk County in 2013 had a tornado report inside them; 1 of 1 tornado reports fell inside a warning, on average 20 minutes after it went out.

Polk County, 2013

	Warnings	With a report	False alarm ratio	Reports	Inside a warning	Mean lead time
Tornado warnings	4	1	75%	1	100%	20 min
Severe thunderstorm warnings	15	9	40%	14	79%	26 min
Flash flood warnings	11	11	0%	8	88%	137 min

Each office's whole area, 2013

	Warnings	With a report	False alarm ratio	Reports	Inside a warning	Mean lead time
NWS Springfield, MO: tornado warnings	35	9	74%	21	52%	12 min
NWS Springfield, MO: severe thunderstorm warnings	236	123	48%	320	77%	24 min
NWS Springfield, MO: flash flood warnings	115	88	23%	255	92%	160 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, 3:25 AM CST	Dense Fog Advisory	SGF	8 hr
Jan 12, 3:55 AM CST	Winter Weather Advisory	SGF	31 hr
Jan 12, 3:45 PM CST	Mesoscale Discussion	SPC	6 hr
Jan 29, 12:51 AM CST	Mesoscale Discussion	SPC	84 min
Jan 29, 5:41 AM CST	Mesoscale Discussion	SPC	94 min
Jan 29, 7:26 AM CST	Tornado Watch	SPC	10 hr
Jan 29, 11:05 AM CST	Mesoscale Discussion	SPC	55 min
Jan 29, 1:19 PM CST	Mesoscale Discussion	SPC	56 min
Feb 12, 10:39 AM CST	Winter Weather Advisory	SGF	19 hr
Feb 13, 3:45 AM CST	Dense Fog Advisory	SGF	4 hr
Feb 18, 3:39 PM CST	Wind Advisory	SGF	3 hr
Feb 19, 4:40 AM CST	Winter Storm Watch	SGF	24 hr
Feb 20, 4:20 AM CST	Winter Storm Warning	SGF	38 hr
Feb 21, 2:32 AM CST	Mesoscale Discussion	SPC	6 hr
Feb 21, 9:27 AM CST	Mesoscale Discussion	SPC	4 hr
Feb 21, 5:44 PM CST	Winter Weather Advisory	SGF	4 hr
Feb 25, 3:27 AM CST	Winter Storm Warning	SGF	32 hr
Feb 25, 3:27 AM CST	Winter Weather Advisory	SGF	57 hr
Mar 11, 2:55 AM CDT	Freezing Rain Advisory	SGF	6 hr
Mar 19, 3:41 PM CDT	Winter Storm Watch	SGF	24 hr
Mar 20, 3:43 PM CDT	Winter Weather Advisory	SGF	39 hr
Mar 23, 4:03 AM CDT	Winter Storm Warning	SGF	39 hr
Mar 23, 4:03 AM CDT	Winter Weather Advisory	SGF	39 hr
Apr 7, 2:19 PM CDT	Severe Thunderstorm Watch	SPC	8 hr
Apr 7, 6:10 PM CDT	Mesoscale Discussion	SPC	65 min
Apr 7, 6:57 PM CDT	Severe Thunderstorm Warning	SGF	63 min
Apr 7, 7:44 PM CDT	Severe Thunderstorm Warning	SGF	46 min
Apr 9, 9:01 PM CDT	Mesoscale Discussion	SPC	89 min
Apr 10, 10:19 AM CDT	Flood Watch	SGF	12 hr
Apr 10, 5:16 PM CDT	Areal Flood Advisory	SGF	6 hr
Apr 10, 6:57 PM CDT	Areal Flood Warning	SGF	15 hr
Apr 11, 4:08 AM CDT	Frost Advisory	SGF	28 hr
Apr 11, 9:56 AM CDT	Areal Flood Warning	SGF	8 hr
Apr 12, 4:05 AM CDT	Frost Advisory	SGF	28 hr
Apr 14, 3:13 AM CDT	Wind Advisory	SGF	16 hr
Apr 15, 8:59 PM CDT	Mesoscale Discussion	SPC	61 min
Apr 15, 10:13 PM CDT	Severe Thunderstorm Watch	SPC	6 hr
Apr 16, 1:08 AM CDT	Mesoscale Discussion	SPC	67 min
Apr 16, 2:55 PM CDT	Flash Flood Watch	SGF	45 hr
Apr 17, 9:50 AM CDT	Mesoscale Discussion	SPC	55 min
Apr 17, 11:11 AM CDT	Tornado Watch	SPC	11 hr
Apr 17, 3:38 PM CDT	Mesoscale Discussion	SPC	97 min
Apr 17, 6:02 PM CDT	Mesoscale Discussion	SPC	88 min
Apr 17, 8:53 PM CDT	Mesoscale Discussion	SPC	97 min
Apr 17, 9:57 PM CDT	Tornado Watch	SPC	7 hr
Apr 17, 11:46 PM CDT	Mesoscale Discussion	SPC	89 min
Apr 18, 2:01 AM CDT	Mesoscale Discussion	SPC	89 min
Apr 18, 2:48 AM CDT	Severe Thunderstorm Warning	SGF	57 min
Apr 18, 7:59 AM CDT	Areal Flood Warning	SGF	10 hr
Apr 19, 3:33 AM CDT	Frost Advisory	SGF	28 hr
Apr 24, 2:16 PM CDT	Frost Advisory	SGF	18 hr
Apr 26, 3:36 PM CDT	Areal Flood Advisory	SGF	18 hr
Apr 27, 10:02 AM CDT	Areal Flood Advisory	SGF	25 hr
May 3, 2:54 PM CDT	Winter Weather Advisory	SGF	16 hr
May 17, 5:02 AM CDT	Dense Fog Advisory	SGF	3 hr
May 19, 5:54 PM CDT	Mesoscale Discussion	SPC	66 min
May 19, 6:25 PM CDT	Tornado Watch	SPC	9 hr
May 19, 9:41 PM CDT	Flash Flood Watch	SGF	12 hr
May 19, 10:16 PM CDT	Mesoscale Discussion	SPC	59 min
May 19, 11:49 PM CDT	Mesoscale Discussion	SPC	56 min
May 20, 12:38 AM CDT	Severe Thunderstorm Warning	SGF	52 min
May 20, 12:42 AM CDT	Tornado Warning	SGF	33 min
May 20, 4:44 AM CDT	Flash Flood Watch	SGF	23 hr
May 20, 12:26 PM CDT	Mesoscale Discussion	SPC	2 hr
May 20, 12:46 PM CDT	Tornado Watch	SPC	8 hr
May 20, 3:09 PM CDT	Special Weather Statement	SGF	36 min
May 20, 3:16 PM CDT	Severe Thunderstorm Warning	SGF	44 min
May 20, 3:23 PM CDT	Severe Thunderstorm Warning	SGF	52 min
May 20, 6:47 PM CDT	Severe Thunderstorm Warning	SGF	43 min
May 20, 7:03 PM CDT	Tornado Warning	SGF	27 min
May 20, 7:08 PM CDT	Tornado Warning	SGF	37 min
May 20, 7:39 PM CDT	Tornado Watch	SPC	6 hr
May 30, 4:03 AM CDT	Flash Flood Watch	SGF	51 hr
May 30, 11:44 AM CDT	Mesoscale Discussion	SPC	91 min
May 30, 1:21 PM CDT	Tornado Watch	SPC	8 hr
May 30, 2:56 PM CDT	Special Weather Statement	SGF	64 min
May 31, 1:49 PM CDT	Mesoscale Discussion	SPC	116 min
May 31, 2:15 PM CDT	Tornado Watch	SPC	8 hr
May 31, 7:05 PM CDT	Mesoscale Discussion	SPC	85 min
May 31, 7:14 PM CDT	Severe Thunderstorm Warning	SGF	46 min
May 31, 7:43 PM CDT	Tornado Warning	SGF	32 min
May 31, 8:11 PM CDT	Flash Flood Warning	SGF	6 hr
May 31, 8:28 PM CDT	Severe Thunderstorm Warning	SGF	17 min
May 31, 8:45 PM CDT	Severe Thunderstorm Warning	SGF	30 min
May 31, 8:46 PM CDT	Mesoscale Discussion	SPC	59 min
May 31, 9:37 PM CDT	Tornado Watch	SPC	6 hr
May 31, 9:42 PM CDT	Flash Flood Warning	SGF	6 hr
May 31, 11:50 PM CDT	Areal Flood Warning	SGF	12 hr
Jun 1, 3:41 AM CDT	Areal Flood Warning	SGF	8 hr
Jun 1, 11:55 AM CDT	Areal Flood Warning	SGF	23 hr
Jun 6, 3:45 AM CDT	Dense Fog Advisory	SGF	5 hr
Jun 15, 12:37 PM CDT	Mesoscale Discussion	SPC	113 min
Jun 15, 6:01 PM CDT	Special Weather Statement	SGF	44 min
Jun 16, 10:48 PM CDT	Flash Flood Warning	SGF	5 hr
Jun 16, 10:59 PM CDT	Special Weather Statement	SGF	31 min
Jun 16, 11:16 PM CDT	Severe Thunderstorm Warning	SGF	44 min
Jun 18, 3:51 PM CDT	Severe Thunderstorm Warning	SGF	39 min
Jun 18, 4:33 PM CDT	Special Weather Statement	SGF	42 min
Jun 27, 11:35 AM CDT	Mesoscale Discussion	SPC	115 min
Jun 27, 3:37 PM CDT	Mesoscale Discussion	SPC	83 min
Jun 27, 11:51 PM CDT	Mesoscale Discussion	SPC	84 min
Jun 28, 12:09 AM CDT	Severe Thunderstorm Watch	SPC	5 hr
Jun 28, 1:20 AM CDT	Severe Thunderstorm Warning	SGF	55 min
Jul 16, 3:41 PM CDT	Special Weather Statement	SGF	34 min
Jul 20, 5:07 PM CDT	Special Weather Statement	SGF	38 min
Jul 23, 3:02 PM CDT	Severe Thunderstorm Watch	SPC	7 hr
Jul 23, 7:13 PM CDT	Mesoscale Discussion	SPC	92 min
Jul 23, 9:46 PM CDT	Mesoscale Discussion	SPC	59 min
Jul 26, 11:39 PM CDT	Dense Fog Advisory	SGF	7 hr
Jul 29, 3:53 PM CDT	Flood Watch	SGF	13 hr
Jul 29, 6:03 PM CDT	Mesoscale Discussion	SPC	2 hr
Jul 30, 3:23 PM CDT	Dense Fog Advisory	SGF	17 hr
Aug 2, 3:20 AM CDT	Flash Flood Watch	SGF	8 days
Aug 2, 11:43 PM CDT	Mesoscale Discussion	SPC	92 min
Aug 3, 1:15 AM CDT	Mesoscale Discussion	SPC	90 min
Aug 3, 1:29 AM CDT	Severe Thunderstorm Watch	SPC	6 hr
Aug 3, 2:31 AM CDT	Flash Flood Warning	SGF	8 hr
Aug 3, 3:44 AM CDT	Severe Thunderstorm Warning	SGF	46 min
Aug 3, 4:19 AM CDT	Severe Thunderstorm Warning	SGF	41 min
Aug 3, 4:23 AM CDT	Mesoscale Discussion	SPC	97 min
Aug 3, 4:28 AM CDT	Flash Flood Warning	SGF	6 hr
Aug 3, 9:40 AM CDT	Areal Flood Advisory	SGF	6 hr
Aug 3, 9:56 AM CDT	Areal Flood Warning	SGF	6 hr
Aug 3, 10:01 AM CDT	Areal Flood Warning	SGF	6 hr
Aug 3, 3:43 PM CDT	Areal Flood Advisory	SGF	18 hr
Aug 3, 3:52 PM CDT	Areal Flood Advisory	SGF	18 hr
Aug 4, 9:25 AM CDT	Flash Flood Warning	SGF	6 hr
Aug 4, 10:01 AM CDT	Areal Flood Advisory	SGF	8 hr
Aug 4, 2:52 PM CDT	Areal Flood Warning	SGF	6 hr
Aug 5, 4:10 AM CDT	Areal Flood Warning	SGF	8 hr
Aug 5, 6:26 AM CDT	Flash Flood Warning	SGF	6 hr
Aug 5, 6:46 AM CDT	Flash Flood Warning	SGF	5 hr
Aug 5, 11:56 AM CDT	Areal Flood Warning	SGF	12 hr
Aug 5, 5:13 PM CDT	Mesoscale Discussion	SPC	3 hr
Aug 6, 1:04 AM CDT	Mesoscale Discussion	SPC	86 min
Aug 7, 2:12 AM CDT	Severe Thunderstorm Watch	SPC	6 hr
Aug 7, 4:02 AM CDT	Special Weather Statement	SGF	58 min
Aug 8, 7:37 AM CDT	Flash Flood Warning	SGF	4 hr
Aug 8, 9:44 AM CDT	Flash Flood Warning	SGF	3 hr
Aug 8, 11:58 AM CDT	Areal Flood Warning	SGF	6 hr
Aug 8, 12:55 PM CDT	Areal Flood Warning	SGF	5 hr
Aug 10, 1:01 AM CDT	Flash Flood Warning Emergency	SGF	7 hr
Aug 10, 8:06 AM CDT	Areal Flood Warning	SGF	8 hr
Aug 10, 3:14 PM CDT	Areal Flood Warning	SGF	6 hr
Aug 10, 3:42 PM CDT	Areal Flood Warning	SGF	5 hr
Aug 12, 3:33 AM CDT	Flash Flood Watch	SGF	24 hr
Aug 12, 10:57 AM CDT	Mesoscale Discussion	SPC	93 min
Aug 31, 3:45 AM CDT	Heat Advisory	SGF	16 hr
Aug 31, 6:05 PM CDT	Mesoscale Discussion	SPC	85 min
Sep 25, 8:48 AM CDT	Dense Fog Advisory	SGF	2 hr
Sep 29, 3:39 AM CDT	Dense Fog Advisory	SGF	5 hr
Oct 22, 3:15 AM CDT	Frost Advisory	SGF	30 hr
Oct 22, 3:04 PM CDT	Freeze Watch	SGF	36 hr
Oct 23, 3:19 PM CDT	Freeze Warning	SGF	42 hr
Oct 28, 4:09 AM CDT	Dense Fog Advisory	SGF	8 hr
Oct 29, 3:22 PM CDT	Flash Flood Watch	SGF	46 hr
Oct 31, 12:31 PM CDT	Mesoscale Discussion	SPC	89 min
Nov 17, 3:16 AM CST	Wind Advisory	SGF	14 hr
Nov 25, 7:30 AM CST	Winter Weather Advisory	SGF	7 hr
Dec 1, 5:50 AM CST	Dense Fog Advisory	SGF	4 hr
Dec 1, 7:38 PM CST	Dense Fog Advisory	SGF	14 hr
Dec 2, 11:10 PM CST	Dense Fog Advisory	SGF	11 hr
Dec 3, 9:16 PM CST	Dense Fog Advisory	SGF	13 hr
Dec 4, 2:55 PM CST	Winter Weather Advisory	SGF	47 hr
Dec 6, 3:24 PM CST	Wind Chill Advisory	SGF	19 hr
Dec 8, 7:17 AM CST	Winter Weather Advisory	SGF	8 hr
Dec 8, 6:17 PM CST	Winter Weather Advisory	SGF	9 hr
Dec 9, 3:24 AM CST	Winter Weather Advisory	SGF	24 hr
Dec 12, 2:59 PM CST	Winter Weather Advisory	SGF	43 hr
Dec 13, 5:26 AM CST	Mesoscale Discussion	SPC	5 hr
Dec 13, 11:31 PM CST	Mesoscale Discussion	SPC	5 hr
Dec 20, 10:48 AM CST	Winter Storm Warning	SGF	40 hr
Dec 20, 8:18 PM CST	Mesoscale Discussion	SPC	6 hr
Dec 21, 2:37 AM CST	Mesoscale Discussion	SPC	4 hr
Dec 21, 12:53 PM CST	Mesoscale Discussion	SPC	4 hr
Dec 26, 1:49 AM CST	Freezing Fog Advisory	SGF	8 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	15
Tornado Warning	4
Severe Thunderstorm Watch	6
Tornado Watch	9
Mesoscale Discussion	45
Special Weather Statement	8
Flooding
Areal Flood Warning	16
Flash Flood Warning	11
Flash Flood Watch	7
Flood Watch	2
Areal Flood Advisory	7
Winter
Winter Storm Warning	4
Winter Storm Watch	2
Freezing Rain Advisory	1
Winter Weather Advisory	13
Heat
Heat Advisory	1
Cold
Freeze Warning	1
Freeze Watch	1
Frost Advisory	5
Wind Chill Advisory	1
Wind and dust
Wind Advisory	3
Fog and smoke
Dense Fog Advisory	13
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 2012 2014

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.