Weather alerts in Polk County, Missouri, 2017

153 weather alerts in 2017, 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 2017. Tap one for its archive.

Alerts: 153
Warnings: 51
Watches: 29
Advisories: 32
Busiest month: March35 alerts
Busiest day: May 27, 201710 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 2 tornado warnings covering Polk County in 2017 had a tornado report inside them; 2 of 2 tornado reports fell inside a warning, on average 18 minutes after it went out.

Polk County, 2017

	Warnings	With a report	False alarm ratio	Reports	Inside a warning	Mean lead time
Tornado warnings	2	1	50%	2	100%	18 min
Severe thunderstorm warnings	17	15	12%	14	86%	22 min
Flash flood warnings	5	3	40%	6	100%	155 min

Each office's whole area, 2017

	Warnings	With a report	False alarm ratio	Reports	Inside a warning	Mean lead time
NWS Springfield, MO: tornado warnings	51	19	63%	57	63%	17 min
NWS Springfield, MO: severe thunderstorm warnings	365	248	32%	740	79%	26 min
NWS Springfield, MO: flash flood warnings	80	53	34%	149	91%	244 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 2, 5:47 PM CST	Dense Fog Advisory	SGF	15 hr
Jan 4, 4:07 AM CST	Winter Weather Advisory	SGF	32 hr
Jan 10, 12:05 AM CST	Wind Advisory	SGF	18 hr
Jan 11, 3:41 AM CST	Wind Advisory	SGF	14 hr
Jan 11, 3:44 AM CST	Winter Storm Watch	SGF	34 hr
Jan 12, 1:21 PM CST	Ice Storm Warning	SGF	71 hr
Jan 13, 3:39 AM CST	Mesoscale Discussion	SPC	6 hr
Jan 13, 10:28 AM CST	Mesoscale Discussion	SPC	6 hr
Jan 18, 4:31 AM CST	Dense Fog Advisory	SGF	6 hr
Jan 19, 2:57 PM CST	Dense Fog Advisory	SGF	18 hr
Feb 9, 2:19 PM CST	Fire Weather Watch	SGF	13 hr
Feb 10, 3:31 AM CST	Red Flag Warning	SGF	14 hr
Feb 15, 1:52 PM CST	Fire Weather Watch	SGF	13 hr
Feb 16, 3:02 AM CST	Red Flag Warning	SGF	15 hr
Feb 21, 2:38 PM CST	Dense Fog Advisory	SGF	18 hr
Feb 23, 3:36 AM CST	Dense Fog Advisory	SGF	5 hr
Feb 28, 10:22 AM CST	Wind Advisory	SGF	8 hr
Feb 28, 1:46 PM CST	Mesoscale Discussion	SPC	2 hr
Feb 28, 2:19 PM CST	Tornado Watch	SPC	7 hr
Feb 28, 6:05 PM CST	Mesoscale Discussion	SPC	115 min
Feb 28, 9:04 PM CST	Tornado Watch	SPC	7 hr
Feb 28, 10:01 PM CST	Mesoscale Discussion	SPC	119 min
Mar 1, 12:16 AM CST	Mesoscale Discussion	SPC	89 min
Mar 1, 12:33 AM CST	Severe Thunderstorm Warning	SGF	22 min
Mar 1, 12:48 AM CST	Severe Thunderstorm Warning	SGF	57 min
Mar 2, 10:20 AM CST	Red Flag Warning	SGF	8 hr
Mar 3, 1:51 PM CST	Fire Weather Watch	SGF	13 hr
Mar 4, 2:49 AM CST	Red Flag Warning	SGF	16 hr
Mar 6, 3:08 AM CST	Wind Advisory	SGF	17 hr
Mar 6, 3:15 AM CST	Fire Weather Watch	SGF	11 hr
Mar 6, 2:08 PM CST	Red Flag Warning	SGF	29 hr
Mar 6, 2:50 PM CST	Mesoscale Discussion	SPC	85 min
Mar 6, 6:02 PM CST	Mesoscale Discussion	SPC	58 min
Mar 6, 6:51 PM CST	Tornado Watch	SPC	8 hr
Mar 6, 9:09 PM CST	Special Weather Statement	SGF	81 min
Mar 6, 10:00 PM CST	Severe Thunderstorm Warning	SGF	60 min
Mar 6, 10:19 PM CST	Severe Thunderstorm Warning	SGF	56 min
Mar 7, 2:10 PM CST	Fire Weather Watch	SGF	13 hr
Mar 8, 3:15 AM CST	Red Flag Warning	SGF	16 hr
Mar 9, 10:02 AM CST	Mesoscale Discussion	SPC	88 min
Mar 9, 11:10 AM CST	Severe Thunderstorm Watch	SPC	10 hr
Mar 9, 2:26 PM CST	Freeze Warning	SGF	70 hr
Mar 9, 4:12 PM CST	Severe Thunderstorm Warning	SGF	48 min
Mar 13, 11:49 AM CDT	Freeze Warning	SGF	23 hr
Mar 13, 11:49 AM CDT	Freeze Warning	SGF	47 hr
Mar 21, 6:33 AM CDT	Severe Thunderstorm Warning	SGF	27 min
Mar 21, 6:58 AM CDT	Special Weather Statement	SGF	47 min
Mar 21, 6:58 AM CDT	Mesoscale Discussion	SPC	2 hr
Mar 21, 11:38 AM CDT	Severe Thunderstorm Warning	SGF	67 min
Mar 24, 3:28 AM CDT	Wind Advisory	SGF	10 hr
Mar 24, 9:36 PM CDT	Mesoscale Discussion	SPC	54 min
Mar 29, 2:51 PM CDT	Mesoscale Discussion	SPC	2 hr
Mar 29, 3:48 PM CDT	Tornado Watch	SPC	7 hr
Mar 29, 6:08 PM CDT	Mesoscale Discussion	SPC	97 min
Apr 4, 6:34 PM CDT	Mesoscale Discussion	SPC	56 min
Apr 4, 8:30 PM CDT	Severe Thunderstorm Warning	SGF	60 min
Apr 5, 3:32 AM CDT	Wind Advisory	SGF	15 hr
Apr 6, 2:14 AM CDT	Frost Advisory	SGF	31 hr
Apr 19, 3:55 PM CDT	Flood Watch	SGF	60 hr
Apr 21, 11:53 AM CDT	Areal Flood Warning	SGF	12 hr
Apr 25, 10:51 PM CDT	Mesoscale Discussion	SPC	54 min
Apr 26, 12:57 AM CDT	Special Weather Statement	SGF	48 min
Apr 27, 4:09 AM CDT	Flash Flood Watch	SGF	4 days
Apr 29, 8:26 AM CDT	Flash Flood Warning	SGF	6 hr
Apr 29, 11:11 AM CDT	Areal Flood Warning	SGF	12 hr
Apr 29, 4:18 PM CDT	Areal Flood Warning	SGF	7 hr
Apr 29, 11:11 PM CDT	Areal Flood Warning	SGF	12 hr
Apr 29, 11:13 PM CDT	Areal Flood Warning	SGF	12 hr
Apr 30, 11:13 AM CDT	Areal Flood Warning	SGF	57 hr
Apr 30, 11:16 AM CDT	Areal Flood Warning	SGF	57 hr
May 2, 3:14 AM CDT	Flash Flood Watch	SGF	52 hr
May 3, 3:15 AM CDT	Areal Flood Warning	SGF	24 hr
May 3, 4:55 AM CDT	Flash Flood Warning	SGF	6 hr
May 10, 12:39 PM CDT	Mesoscale Discussion	SPC	3 hr
May 10, 6:30 PM CDT	Severe Thunderstorm Watch	SPC	2 hr
May 11, 10:46 AM CDT	Flash Flood Watch	SGF	13 hr
May 17, 3:37 AM CDT	Wind Advisory	SGF	15 hr
May 18, 9:41 PM CDT	Mesoscale Discussion	SPC	94 min
May 19, 3:06 PM CDT	Tornado Watch	SPC	7 hr
May 19, 4:01 PM CDT	Tornado Warning	SGF	44 min
May 19, 4:36 PM CDT	Tornado Warning	SGF	39 min
May 19, 6:04 PM CDT	Mesoscale Discussion	SPC	86 min
May 19, 9:16 PM CDT	Mesoscale Discussion	SPC	59 min
May 27, 9:59 AM CDT	Mesoscale Discussion	SPC	2 hr
May 27, 11:21 AM CDT	Flash Flood Watch	SGF	16 hr
May 27, 12:13 PM CDT	Tornado Watch	SPC	7 hr
May 27, 1:12 PM CDT	Mesoscale Discussion	SPC	93 min
May 27, 1:27 PM CDT	Severe Thunderstorm Warning	SGF	48 min
May 27, 2:06 PM CDT	Severe Thunderstorm Warning	SGF	39 min
May 27, 2:33 PM CDT	Severe Thunderstorm Warning	SGF	42 min
May 27, 6:17 PM CDT	Severe Thunderstorm Warning	SGF	43 min
May 27, 6:26 PM CDT	Severe Thunderstorm Watch	SPC	3 hr
May 27, 6:45 PM CDT	Severe Thunderstorm Warning	SGF	45 min
May 30, 7:31 PM CDT	Special Weather Statement	SGF	44 min
May 30, 9:22 PM CDT	Special Weather Statement	SGF	53 min
May 30, 11:37 PM CDT	Special Weather Statement	SGF	38 min
May 31, 1:40 PM CDT	Severe Thunderstorm Watch	SPC	5 hr
May 31, 1:45 PM CDT	Mesoscale Discussion	SPC	60 min
Jun 14, 1:04 PM CDT	Severe Thunderstorm Watch	SPC	9 hr
Jun 15, 3:23 AM CDT	Special Weather Statement	SGF	52 min
Jun 16, 3:26 AM CDT	Heat Advisory	SGF	39 hr
Jun 17, 12:09 AM CDT	Severe Thunderstorm Watch	SPC	9 hr
Jun 17, 2:35 AM CDT	Severe Thunderstorm Warning	SGF	40 min
Jun 17, 2:58 AM CDT	Mesoscale Discussion	SPC	2 hr
Jun 17, 3:09 AM CDT	Special Weather Statement	SGF	51 min
Jun 17, 9:34 PM CDT	Mesoscale Discussion	SPC	116 min
Jun 30, 2:42 AM CDT	Severe Thunderstorm Watch	SPC	6 hr
Jun 30, 3:56 AM CDT	Special Weather Statement	SGF	64 min
Jun 30, 5:07 AM CDT	Severe Thunderstorm Warning	SGF	38 min
Jul 7, 2:25 PM CDT	Heat Advisory	SGF	5 hr
Jul 12, 2:42 AM CDT	Heat Advisory	SGF	16 hr
Jul 13, 2:28 AM CDT	Heat Advisory	SGF	17 hr
Jul 18, 3:10 AM CDT	Excessive Heat Warning	SGF	6 days
Jul 18, 2:36 PM CDT	Heat Advisory	SGF	5 days
Jul 24, 3:47 PM CDT	Severe Thunderstorm Warning	SGF	43 min
Jul 25, 2:41 PM CDT	Heat Advisory	SGF	29 hr
Jul 25, 5:00 PM CDT	Special Weather Statement	SGF	60 min
Jul 27, 6:12 AM CDT	Flash Flood Warning	SGF	7 hr
Aug 4, 1:27 PM CDT	Flash Flood Watch	SGF	44 hr
Aug 5, 11:45 AM CDT	Flash Flood Warning	SGF	8 hr
Aug 5, 11:52 AM CDT	Severe Thunderstorm Warning	SGF	53 min
Aug 6, 5:52 PM CDT	Dense Fog Advisory	SGF	15 hr
Aug 16, 10:54 AM CDT	Flash Flood Watch	SGF	16 hr
Aug 16, 12:42 PM CDT	Mesoscale Discussion	SPC	3 hr
Aug 16, 4:47 PM CDT	Mesoscale Discussion	SPC	88 min
Aug 16, 7:30 PM CDT	Mesoscale Discussion	SPC	90 min
Aug 19, 1:44 PM CDT	Heat Advisory	SGF	5 hr
Aug 20, 6:43 PM CDT	Severe Thunderstorm Warning	SGF	32 min
Aug 20, 6:54 PM CDT	Areal Flood Advisory	SGF	6 hr
Aug 20, 7:09 PM CDT	Flash Flood Warning	SGF	6 hr
Aug 28, 2:40 AM CDT	Dense Fog Advisory	SGF	6 hr
Sep 18, 10:36 PM CDT	Dense Fog Advisory	SGF	10 hr
Oct 21, 8:10 PM CDT	Mesoscale Discussion	SPC	95 min
Oct 21, 10:06 PM CDT	Severe Thunderstorm Watch	SPC	5 hr
Oct 21, 10:34 PM CDT	Severe Thunderstorm Warning	SGF	56 min
Oct 22, 12:00 AM CDT	Special Weather Statement	SGF	75 min
Oct 24, 10:44 AM CDT	Wind Advisory	SGF	7 hr
Oct 26, 3:23 AM CDT	Freeze Watch	SGF	24 hr
Oct 27, 3:07 AM CDT	Freeze Warning	SGF	31 hr
Oct 27, 3:07 AM CDT	Freeze Warning	SGF	54 hr
Nov 4, 10:25 PM CDT	Dense Fog Advisory	SGF	87 min
Nov 17, 2:52 PM CST	Wind Advisory	SGF	26 hr
Nov 20, 9:06 AM CST	Red Flag Warning	SGF	9 hr
Nov 27, 2:35 AM CST	Red Flag Warning	SGF	16 hr
Dec 4, 1:26 PM CST	Mesoscale Discussion	SPC	94 min
Dec 4, 2:34 PM CST	Severe Thunderstorm Watch	SPC	5 hr
Dec 4, 3:57 PM CST	Mesoscale Discussion	SPC	93 min
Dec 11, 3:27 AM CST	Red Flag Warning	SGF	15 hr
Dec 16, 11:07 AM CST	Red Flag Warning	SGF	6 hr
Dec 22, 2:33 PM CST	Winter Weather Advisory	SGF	15 hr
Dec 24, 6:33 AM CST	Winter Weather Advisory	SGF	4 hr
Dec 29, 3:35 PM CST	Wind Chill Advisory	SGF	4 days
Dec 30, 6:07 AM CST	Winter Weather Advisory	SGF	4 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	19
Tornado Warning	2
Severe Thunderstorm Watch	9
Tornado Watch	6
Mesoscale Discussion	30
Special Weather Statement	11
Flooding
Areal Flood Warning	8
Flash Flood Warning	5
Flash Flood Watch	6
Flood Watch	1
Areal Flood Advisory	1
Winter
Ice Storm Warning	1
Winter Storm Watch	1
Winter Weather Advisory	4
Heat
Excessive Heat Warning	1
Heat Advisory	7
Cold
Freeze Warning	5
Freeze Watch	1
Frost Advisory	1
Wind Chill Advisory	1
Wind and dust
Wind Advisory	9
Fire
Red Flag Warning	10
Fire Weather Watch	5
Fog and smoke
Dense Fog Advisory	9

The busiest days

Days with the most alerts issued, by UTC date.

Nearby

Alerts in force now Tornadoes on record Forecast The radar archive 2016 2018

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.