Weather alerts in Douglas County, Kansas, 2009

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

Douglas County and its neighbors

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

Alerts: 164
Warnings: 41
Watches: 27
Advisories: 42
Busiest month: April34 alerts
Busiest day: May 15, 200912 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 Douglas County in 2009 had a tornado report inside them.

Douglas 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	19	12	37%	13	38%	23 min
Flash flood warnings	4	3	25%	1	100%	133 min

Each office's whole area, 2009

	Warnings	With a report	False alarm ratio	Reports	Inside a warning	Mean lead time
NWS Topeka, KS: tornado warnings	21	6	71%	8	75%	13 min
NWS Topeka, KS: severe thunderstorm warnings	227	147	35%	451	82%	23 min
NWS Topeka, KS: flash flood warnings	34	14	59%	29	69%	67 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 11, 3:12 PM CST	Wind Advisory	TOP	31 hr
Jan 14, 3:50 AM CST	Wind Chill Advisory	TOP	30 hr
Jan 26, 3:51 AM CST	Winter Weather Advisory	TOP	32 hr
Jan 31, 5:32 AM CST	Red Flag Warning	TOP	12 hr
Feb 8, 3:24 PM CST	Wind Advisory	TOP	29 hr
Feb 9, 8:02 AM CST	Severe Thunderstorm Warning	TOP	43 min
Feb 9, 8:39 AM CST	Severe Thunderstorm Warning	TOP	51 min
Feb 9, 8:43 AM CST	Mesoscale Discussion	SPC	32 min
Feb 27, 3:19 PM CST	Winter Weather Advisory	TOP	21 hr
Feb 27, 6:22 PM CST	Mesoscale Discussion	SPC	4 hr
Mar 7, 12:44 AM CST	Mesoscale Discussion	SPC	2 hr
Mar 7, 1:51 PM CST	Mesoscale Discussion	SPC	2 hr
Mar 7, 2:32 PM CST	Severe Thunderstorm Watch	SPC	7 hr
Mar 7, 5:57 PM CST	Mesoscale Discussion	SPC	2 hr
Mar 7, 8:20 PM CST	Severe Thunderstorm Warning	TOP	55 min
Mar 7, 8:27 PM CST	Mesoscale Discussion	SPC	2 hr
Mar 7, 11:40 PM CST	Severe Thunderstorm Warning	TOP	50 min
Mar 7, 11:41 PM CST	Areal Flood Advisory	TOP	2 hr
Mar 8, 12:43 AM CST	Mesoscale Discussion	SPC	92 min
Mar 9, 3:56 AM CDT	Flash Flood Watch	TOP	23 hr
Mar 9, 5:42 PM CDT	Mesoscale Discussion	SPC	93 min
Mar 22, 3:52 PM CDT	Wind Advisory	TOP	21 hr
Mar 23, 10:12 AM CDT	High Wind Warning	TOP	9 hr
Mar 23, 5:08 PM CDT	Mesoscale Discussion	SPC	97 min
Mar 23, 6:47 PM CDT	Tornado Watch	SPC	5 hr
Mar 23, 7:07 PM CDT	Wind Advisory	TOP	5 hr
Mar 23, 11:09 PM CDT	Mesoscale Discussion	SPC	66 min
Mar 23, 11:35 PM CDT	Mesoscale Discussion	SPC	115 min
Mar 23, 11:43 PM CDT	Severe Thunderstorm Watch	SPC	5 hr
Mar 24, 12:11 AM CDT	Severe Thunderstorm Warning	TOP	34 min
Mar 24, 1:22 AM CDT	Areal Flood Advisory	TOP	83 min
Mar 24, 2:28 AM CDT	Mesoscale Discussion	SPC	2 hr
Mar 24, 2:28 AM CDT	Areal Flood Advisory	TOP	62 min
Mar 26, 11:07 AM CDT	Winter Storm Watch	TOP	18 hr
Mar 27, 4:37 AM CDT	Winter Storm Warning	TOP	38 hr
Mar 28, 2:18 AM CDT	Mesoscale Discussion	SPC	6 hr
Mar 28, 7:52 AM CDT	Mesoscale Discussion	SPC	2 hr
Apr 4, 11:10 AM CDT	Wind Advisory	TOP	8 hr
Apr 4, 1:12 PM CDT	Mesoscale Discussion	SPC	2 hr
Apr 4, 2:06 PM CDT	Severe Thunderstorm Watch	SPC	6 hr
Apr 4, 9:51 PM CDT	Wind Advisory	TOP	21 hr
Apr 6, 2:07 PM CDT	Freeze Warning	TOP	19 hr
Apr 24, 3:41 AM CDT	Wind Advisory	TOP	15 hr
Apr 25, 3:15 PM CDT	Flood Watch	TOP	44 hr
Apr 25, 3:36 PM CDT	Tornado Watch	SPC	7 hr
Apr 25, 4:55 PM CDT	Severe Thunderstorm Warning	TOP	50 min
Apr 25, 5:16 PM CDT	Tornado Warning	TOP	29 min
Apr 25, 5:28 PM CDT	Tornado Warning	TOP	47 min
Apr 25, 6:09 PM CDT	Tornado Warning	TOP	23 min
Apr 25, 6:12 PM CDT	Areal Flood Advisory	TOP	63 min
Apr 25, 6:38 PM CDT	Mesoscale Discussion	SPC	2 hr
Apr 25, 7:00 PM CDT	Severe Thunderstorm Warning	TOP	45 min
Apr 25, 7:39 PM CDT	Areal Flood Advisory	TOP	3 hr
Apr 25, 8:17 PM CDT	Severe Thunderstorm Warning	TOP	28 min
Apr 25, 9:58 PM CDT	Mesoscale Discussion	SPC	92 min
Apr 25, 10:09 PM CDT	Severe Thunderstorm Watch	SPC	6 hr
Apr 25, 11:50 PM CDT	High Wind Warning	TOP	3 hr
Apr 26, 2:10 AM CDT	Mesoscale Discussion	SPC	95 min
Apr 26, 10:54 AM CDT	Mesoscale Discussion	SPC	66 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, 8:21 PM CDT	Mesoscale Discussion	SPC	54 min
Apr 26, 8:56 PM CDT	Flash Flood Warning	TOP	3 hr
Apr 26, 9:36 PM CDT	Flash Flood Warning	TOP	4 hr
Apr 27, 12:01 AM CDT	Areal Flood Warning	TOP	6 hr
Apr 27, 2:15 PM CDT	River Flood Warning	TOP	17 hr
Apr 29, 3:57 AM CDT	Flash Flood Watch	TOP	12 hr
Apr 29, 11:06 AM CDT	Areal Flood Warning	TOP	3 hr
Apr 29, 1:59 PM CDT	Areal Flood Warning	TOP	3 hr
Apr 30, 7:30 AM CDT	Areal Flood Advisory	TOP	90 min
Apr 30, 9:48 AM CDT	Areal Flood Advisory	TOP	3 hr
May 7, 1:44 PM CDT	Tornado Watch	SPC	6 hr
May 11, 3:53 AM CDT	Dense Fog Advisory	TOP	4 hr
May 12, 1:22 PM CDT	Mesoscale Discussion	SPC	53 min
May 13, 4:51 PM CDT	Severe Thunderstorm Watch	SPC	6 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, 2:44 PM CDT	Mesoscale Discussion	SPC	31 min
May 15, 3:02 PM CDT	Tornado Watch	SPC	7 hr
May 15, 3:12 PM CDT	Severe Thunderstorm Warning	TOP	48 min
May 15, 3:19 PM CDT	Severe Thunderstorm Warning	TOP	41 min
May 15, 3:47 PM CDT	Flash Flood Warning	TOP	4 hr
May 15, 4:00 PM CDT	Severe Thunderstorm Warning	TOP	45 min
May 15, 4:58 PM CDT	Severe Thunderstorm Warning	TOP	34 min
May 15, 5:30 PM CDT	Severe Thunderstorm Warning	TOP	30 min
May 15, 5:47 PM CDT	Flash Flood Warning	TOP	4 hr
May 15, 6:11 PM CDT	Severe Thunderstorm Warning	TOP	49 min
Jun 2, 4:13 AM CDT	Flash Flood Watch	TOP	16 hr
Jun 2, 2:14 PM CDT	Mesoscale Discussion	SPC	2 hr
Jun 7, 12:44 AM CDT	Mesoscale Discussion	SPC	61 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, 10:22 PM CDT	Mesoscale Discussion	SPC	53 min
Jun 7, 11:09 PM CDT	Severe Thunderstorm Watch	SPC	6 hr
Jun 9, 7:16 AM CDT	Mesoscale Discussion	SPC	59 min
Jun 9, 8:40 AM CDT	Mesoscale Discussion	SPC	65 min
Jun 9, 9:02 AM CDT	Severe Thunderstorm Watch	SPC	6 hr
Jun 9, 11:11 AM CDT	Mesoscale Discussion	SPC	94 min
Jun 9, 11:45 AM CDT	Severe Thunderstorm Warning	TOP	45 min
Jun 9, 11:47 AM CDT	Areal Flood Advisory	TOP	58 min
Jun 12, 5:32 PM CDT	Mesoscale Discussion	SPC	58 min
Jun 14, 10:36 PM CDT	Mesoscale Discussion	SPC	114 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, 3:24 PM CDT	Flash Flood Watch	TOP	15 hr
Jun 15, 5:04 PM CDT	Mesoscale Discussion	SPC	86 min
Jun 15, 6:01 PM CDT	Tornado Watch	SPC	6 hr
Jun 15, 7:33 PM CDT	Mesoscale Discussion	SPC	87 min
Jun 15, 9:32 PM CDT	Mesoscale Discussion	SPC	88 min
Jun 15, 10:08 PM CDT	Severe Thunderstorm Warning	TOP	28 min
Jun 16, 2:50 AM CDT	Areal Flood Advisory	TOP	115 min
Jun 21, 9:35 PM CDT	Heat Advisory	TOP	39 hr
Jun 23, 12:56 PM CDT	Excessive Heat Warning	TOP	4 days
Jun 24, 3:36 PM CDT	Mesoscale Discussion	SPC	114 min
Jun 24, 4:33 PM CDT	Severe Thunderstorm Watch	SPC	5 hr
Jun 24, 6:40 PM CDT	Severe Thunderstorm Warning	TOP	29 min
Jun 24, 7:40 PM CDT	Mesoscale Discussion	SPC	65 min
Jul 3, 11:35 PM CDT	Mesoscale Discussion	SPC	55 min
Jul 10, 5:40 PM CDT	Mesoscale Discussion	SPC	95 min
Jul 11, 2:02 AM CDT	Areal Flood Advisory	TOP	3 hr
Jul 12, 4:48 AM CDT	Mesoscale Discussion	SPC	57 min
Jul 12, 5:46 AM CDT	Severe Thunderstorm Watch	SPC	4 hr
Jul 12, 7:02 AM CDT	Severe Thunderstorm Warning	TOP	43 min
Jul 12, 7:52 AM CDT	Areal Flood Advisory	TOP	113 min
Jul 12, 7:58 AM CDT	Mesoscale Discussion	SPC	62 min
Jul 13, 3:45 PM CDT	Heat Advisory	TOP	27 hr
Jul 14, 3:05 PM CDT	Mesoscale Discussion	SPC	115 min
Jul 15, 2:56 AM CDT	Mesoscale Discussion	SPC	2 hr
Jul 20, 2:56 PM CDT	Flash Flood Watch	TOP	13 hr
Jul 25, 2:17 AM CDT	Mesoscale Discussion	SPC	88 min
Jul 28, 9:50 AM CDT	Areal Flood Advisory	TOP	3 hr
Jul 28, 12:50 PM CDT	Areal Flood Advisory	TOP	115 min
Jul 28, 2:50 PM CDT	Areal Flood Advisory	TOP	115 min
Aug 8, 3:18 AM CDT	Heat Advisory	TOP	16 hr
Aug 10, 9:21 AM CDT	Severe Thunderstorm Watch	SPC	6 hr
Aug 10, 11:29 AM CDT	Mesoscale Discussion	SPC	91 min
Aug 10, 1:31 PM CDT	Severe Thunderstorm Warning	TOP	59 min
Aug 17, 1:22 AM CDT	Mesoscale Discussion	SPC	83 min
Aug 17, 6:04 AM CDT	Areal Flood Advisory	TOP	3 hr
Aug 17, 8:25 AM CDT	Areal Flood Advisory	TOP	80 min
Aug 17, 10:50 AM CDT	Areal Flood Advisory	TOP	98 min
Aug 19, 7:11 PM CDT	Severe Thunderstorm Watch	SPC	8 hr
Aug 19, 10:25 PM CDT	Mesoscale Discussion	SPC	95 min
Aug 26, 9:22 AM CDT	Areal Flood Advisory	TOP	53 min
Aug 26, 10:53 PM CDT	Areal Flood Advisory	TOP	112 min
Sep 5, 10:14 PM CDT	Dense Fog Advisory	TOP	12 hr
Sep 6, 8:59 PM CDT	Dense Fog Advisory	TOP	13 hr
Sep 21, 10:38 AM CDT	Areal Flood Advisory	TOP	112 min
Sep 30, 11:44 PM CDT	Mesoscale Discussion	SPC	91 min
Oct 1, 1:47 PM CDT	Wind Advisory	TOP	29 hr
Oct 9, 3:26 PM CDT	Freeze Warning	TOP	19 hr
Oct 10, 4:02 AM CDT	Freeze Warning	TOP	22 hr
Oct 17, 3:33 AM CDT	Frost Advisory	TOP	29 hr
Nov 15, 3:25 PM CST	Winter Weather Advisory	TOP	36 hr
Nov 19, 4:05 AM CST	Dense Fog Advisory	TOP	5 hr
Dec 7, 3:08 AM CST	Winter Storm Warning	TOP	51 hr
Dec 7, 3:01 PM CST	Winter Weather Advisory	TOP	45 hr
Dec 8, 11:22 AM CST	Mesoscale Discussion	SPC	5 hr
Dec 21, 4:05 AM CST	Winter Storm Watch	TOP	59 hr
Dec 23, 10:31 AM CST	Mesoscale Discussion	SPC	89 min
Dec 23, 2:56 PM CST	Winter Storm Warning	TOP	24 hr
Dec 24, 3:33 AM CST	Winter Weather Advisory	TOP	48 hr
Dec 24, 1:32 PM CST	Mesoscale Discussion	SPC	4 hr
Dec 24, 3:13 PM CST	Blizzard Warning	TOP	16 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	3
Severe Thunderstorm Watch	12
Tornado Watch	7
Mesoscale Discussion	54
Flooding
Areal Flood Warning	3
Flash Flood Warning	4
River Flood Warning	1
Flash Flood Watch	5
Flood Watch	1
Areal Flood Advisory	20
Winter
Blizzard Warning	1
Winter Storm Warning	3
Winter Storm Watch	2
Winter Weather Advisory	5
Heat
Excessive Heat Warning	1
Heat Advisory	3
Cold
Freeze Warning	3
Frost Advisory	1
Wind Chill Advisory	1
Wind and dust
High Wind Warning	2
Wind Advisory	8
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.