Weather alerts in Nemaha County, Kansas, 2015

155 weather alerts in 2015, from the National Weather Service and the Storm Prediction Center. An alert counts here when it covered this county.

Nemaha County and its neighbors

Each county as a circle sized by its count in 2015. Tap one for its archive.

Alerts: 155
Warnings: 38
Watches: 22
Advisories: 34
Busiest month: May37 alerts
Busiest day: May 25, 201512 alerts

Over time

By month

Warning verification

How often warnings here had a storm report inside them, and how much warning the reports had.

Nemaha County, 2015

	Warnings	With a report	False alarm ratio	Reports	Inside a warning	Mean lead time
Tornado warnings	0			0
Severe thunderstorm warnings	20	10	50%	6	100%	23 min
Flash flood warnings	4	3	25%	3	67%	130 min

Each office's whole area, 2015

	Warnings	With a report	False alarm ratio	Reports	Inside a warning	Mean lead time
NWS Topeka, KS: tornado warnings	32	15	53%	23	74%	11 min
NWS Topeka, KS: severe thunderstorm warnings	231	136	41%	280	86%	19 min
NWS Topeka, KS: flash flood warnings	35	24	31%	57	88%	86 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, 3:35 PM CST	Winter Weather Advisory	TOP	35 hr
Jan 3, 3:31 PM CST	Wind Chill Advisory	TOP	18 hr
Jan 6, 3:03 PM CST	Wind Chill Advisory	TOP	21 hr
Jan 7, 3:29 PM CST	Wind Chill Advisory	TOP	18 hr
Jan 25, 3:03 AM CST	Wind Advisory	TOP	11 hr
Jan 29, 3:09 AM CST	Wind Advisory	TOP	4 hr
Jan 31, 3:27 PM CST	Winter Weather Advisory	TOP	30 hr
Feb 1, 9:24 PM CST	Wind Chill Advisory	TOP	12 hr
Feb 3, 3:32 PM CST	Winter Weather Advisory	TOP	26 hr
Feb 16, 3:33 PM CST	Winter Weather Advisory	TOP	17 hr
Feb 20, 4:16 AM CST	Winter Weather Advisory	TOP	26 hr
Feb 27, 3:26 PM CST	Winter Weather Advisory	TOP	45 hr
Mar 14, 3:53 AM CDT	Fire Weather Watch	TOP	24 hr
Mar 14, 3:19 PM CDT	Red Flag Warning	TOP	29 hr
Mar 15, 4:15 AM CDT	Fire Weather Watch	TOP	23 hr
Mar 16, 3:09 AM CDT	Red Flag Warning	TOP	17 hr
Mar 17, 11:10 AM CDT	Red Flag Warning	TOP	8 hr
Mar 23, 8:33 PM CDT	Special Weather Statement	TOP	27 min
Mar 23, 11:41 PM CDT	Special Weather Statement	TOP	34 min
Mar 25, 3:50 AM CDT	Dense Fog Advisory	TOP	7 hr
Mar 30, 10:01 AM CDT	Red Flag Warning	TOP	9 hr
Apr 8, 3:41 AM CDT	Special Weather Statement	TOP	34 min
Apr 8, 4:42 AM CDT	Special Weather Statement	TOP	33 min
Apr 12, 9:55 PM CDT	Special Weather Statement	TOP	35 min
May 3, 7:06 PM CDT	Mesoscale Discussion	SPC	84 min
May 3, 9:13 PM CDT	Tornado Watch	SPC	118 min
May 4, 2:56 PM CDT	Mesoscale Discussion	SPC	2 hr
May 4, 3:08 PM CDT	Severe Thunderstorm Warning	TOP	52 min
May 4, 3:26 PM CDT	Severe Thunderstorm Watch	SPC	6 hr
May 4, 3:57 PM CDT	Severe Thunderstorm Warning	TOP	27 min
May 4, 4:13 PM CDT	Severe Thunderstorm Warning	TOP	12 min
May 4, 5:34 PM CDT	Areal Flood Advisory	TOP	3 hr
May 4, 6:30 PM CDT	Mesoscale Discussion	SPC	90 min
May 4, 10:37 PM CDT	Areal Flood Advisory	TOP	4 hr
May 5, 6:41 PM CDT	Special Weather Statement	TOP	64 min
May 5, 7:32 PM CDT	Special Weather Statement	TOP	43 min
May 6, 7:40 PM CDT	Mesoscale Discussion	SPC	65 min
May 6, 8:31 PM CDT	Tornado Watch	SPC	5 hr
May 6, 9:40 PM CDT	Mesoscale Discussion	SPC	95 min
May 6, 11:17 PM CDT	Mesoscale Discussion	SPC	88 min
May 7, 6:41 PM CDT	Special Weather Statement	TOP	34 min
May 10, 11:29 AM CDT	Special Weather Statement	TOP	31 min
May 10, 1:47 PM CDT	Severe Thunderstorm Watch	SPC	8 hr
May 10, 3:13 PM CDT	Mesoscale Discussion	SPC	92 min
May 16, 3:34 PM CDT	Mesoscale Discussion	SPC	86 min
May 16, 5:46 PM CDT	Mesoscale Discussion	SPC	59 min
May 22, 3:39 PM CDT	Flash Flood Watch	TOP	60 hr
May 23, 8:17 PM CDT	Special Weather Statement	TOP	43 min
May 25, 3:43 PM CDT	Severe Thunderstorm Watch	SPC	5 hr
May 25, 3:47 PM CDT	Severe Thunderstorm Warning	TOP	28 min
May 25, 4:07 PM CDT	Severe Thunderstorm Warning	TOP	38 min
May 25, 4:15 PM CDT	Severe Thunderstorm Warning	TOP	30 min
May 25, 4:31 PM CDT	Severe Thunderstorm Warning	TOP	44 min
May 25, 5:08 PM CDT	Mesoscale Discussion	SPC	67 min
May 25, 5:17 PM CDT	Severe Thunderstorm Warning	TOP	35 min
May 25, 6:01 PM CDT	Areal Flood Advisory	TOP	119 min
May 25, 6:07 PM CDT	Severe Thunderstorm Warning	TOP	23 min
May 25, 6:12 PM CDT	Severe Thunderstorm Warning	TOP	31 min
May 25, 6:18 PM CDT	Flash Flood Warning	TOP	4 hr
May 25, 6:39 PM CDT	Mesoscale Discussion	SPC	96 min
May 25, 8:18 PM CDT	Mesoscale Discussion	SPC	87 min
Jun 3, 1:18 PM CDT	Special Weather Statement	TOP	27 min
Jun 3, 2:43 PM CDT	Flash Flood Watch	TOP	68 hr
Jun 4, 1:56 AM CDT	Mesoscale Discussion	SPC	94 min
Jun 4, 9:42 AM CDT	Mesoscale Discussion	SPC	93 min
Jun 4, 4:23 PM CDT	River Flood Warning	TOP	36 hr
Jun 4, 7:26 PM CDT	Areal Flood Advisory	TOP	2 hr
Jun 4, 11:30 PM CDT	Special Weather Statement	TOP	30 min
Jun 5, 12:37 AM CDT	Flash Flood Warning	TOP	7 hr
Jun 5, 7:30 AM CDT	Areal Flood Warning	TOP	10 hr
Jun 7, 4:10 AM CDT	Flash Flood Watch	TOP	22 hr
Jun 7, 5:31 PM CDT	Mesoscale Discussion	SPC	89 min
Jun 11, 1:01 PM CDT	Mesoscale Discussion	SPC	119 min
Jun 11, 4:24 PM CDT	Severe Thunderstorm Warning	TOP	36 min
Jun 19, 3:07 PM CDT	Heat Advisory	TOP	29 hr
Jun 21, 10:17 AM CDT	Special Weather Statement	TOP	43 min
Jun 21, 11:30 AM CDT	Severe Thunderstorm Warning	TOP	40 min
Jun 21, 12:12 PM CDT	Severe Thunderstorm Warning	TOP	27 min
Jun 21, 1:13 PM CDT	Special Weather Statement	TOP	32 min
Jun 21, 3:53 PM CDT	Heat Advisory	TOP	27 hr
Jun 23, 10:40 AM CDT	Mesoscale Discussion	SPC	95 min
Jun 23, 1:50 PM CDT	Special Weather Statement	TOP	40 min
Jun 23, 2:01 PM CDT	Severe Thunderstorm Warning	TOP	17 min
Jun 23, 2:08 PM CDT	Areal Flood Advisory	TOP	3 hr
Jun 25, 3:34 AM CDT	Flash Flood Watch	TOP	25 hr
Jun 25, 9:06 PM CDT	Mesoscale Discussion	SPC	84 min
Jun 25, 11:17 PM CDT	Special Weather Statement	TOP	28 min
Jun 25, 11:33 PM CDT	Mesoscale Discussion	SPC	87 min
Jul 2, 3:35 PM CDT	Mesoscale Discussion	SPC	2 hr
Jul 6, 1:26 PM CDT	Special Weather Statement	TOP	49 min
Jul 11, 3:58 AM CDT	Heat Advisory	TOP	65 hr
Jul 15, 5:47 PM CDT	Mesoscale Discussion	SPC	58 min
Jul 15, 9:22 PM CDT	Mesoscale Discussion	SPC	113 min
Jul 16, 5:09 AM CDT	Special Weather Statement	TOP	36 min
Jul 16, 3:35 PM CDT	Heat Advisory	TOP	53 hr
Jul 18, 8:30 PM CDT	Mesoscale Discussion	SPC	60 min
Jul 19, 7:01 AM CDT	Flash Flood Warning	TOP	4 hr
Jul 19, 7:42 AM CDT	Flash Flood Warning	TOP	4 hr
Jul 19, 3:49 PM CDT	Flash Flood Watch	TOP	16 hr
Jul 23, 2:23 PM CDT	Heat Advisory	TOP	23 hr
Jul 24, 4:02 AM CDT	Excessive Heat Warning	TOP	17 hr
Jul 25, 3:28 PM CDT	Heat Advisory	TOP	28 hr
Jul 27, 3:36 AM CDT	Heat Advisory	TOP	16 hr
Jul 27, 3:16 PM CDT	Heat Advisory	TOP	29 hr
Jul 28, 4:50 PM CDT	Mesoscale Discussion	SPC	2 hr
Jul 28, 5:46 PM CDT	Severe Thunderstorm Watch	SPC	6 hr
Jul 28, 8:04 PM CDT	Mesoscale Discussion	SPC	116 min
Aug 3, 11:26 AM CDT	Severe Thunderstorm Warning	TOP	16 min
Aug 3, 11:44 AM CDT	Mesoscale Discussion	SPC	2 hr
Aug 7, 3:51 PM CDT	Heat Advisory	TOP	28 hr
Aug 8, 1:14 AM CDT	Mesoscale Discussion	SPC	91 min
Aug 8, 3:57 PM CDT	Mesoscale Discussion	SPC	2 hr
Aug 22, 2:55 PM CDT	Mesoscale Discussion	SPC	65 min
Aug 22, 3:48 PM CDT	Tornado Watch	SPC	8 hr
Aug 22, 6:21 PM CDT	Mesoscale Discussion	SPC	84 min
Aug 22, 8:49 PM CDT	Mesoscale Discussion	SPC	116 min
Aug 27, 5:36 AM CDT	Mesoscale Discussion	SPC	2 hr
Aug 30, 4:34 AM CDT	Dense Fog Advisory	TOP	5 hr
Sep 7, 2:18 PM CDT	Mesoscale Discussion	SPC	87 min
Sep 7, 3:37 PM CDT	Severe Thunderstorm Watch	SPC	6 hr
Sep 7, 5:13 PM CDT	Special Weather Statement	TOP	32 min
Sep 7, 6:23 PM CDT	Mesoscale Discussion	SPC	97 min
Sep 7, 8:38 PM CDT	Mesoscale Discussion	SPC	67 min
Sep 10, 1:30 AM CDT	Severe Thunderstorm Warning	TOP	30 min
Sep 10, 1:55 AM CDT	Special Weather Statement	TOP	35 min
Sep 10, 2:29 AM CDT	Special Weather Statement	TOP	31 min
Sep 17, 6:33 PM CDT	Special Weather Statement	TOP	27 min
Sep 17, 6:36 PM CDT	Severe Thunderstorm Warning	TOP	39 min
Sep 17, 6:38 PM CDT	Severe Thunderstorm Watch	SPC	6 hr
Sep 17, 7:04 PM CDT	Severe Thunderstorm Warning	TOP	41 min
Sep 17, 7:12 PM CDT	Severe Thunderstorm Warning	TOP	48 min
Sep 17, 7:57 PM CDT	Severe Thunderstorm Warning	TOP	48 min
Sep 18, 9:52 AM CDT	Flash Flood Watch	TOP	9 hr
Oct 15, 3:13 PM CDT	Frost Advisory	TOP	17 hr
Oct 18, 4:52 PM CDT	Fire Weather Watch	TOP	11 hr
Oct 19, 3:45 AM CDT	Red Flag Warning	TOP	15 hr
Oct 19, 9:03 AM CDT	Wind Advisory	TOP	7 hr
Oct 24, 2:17 PM CDT	Frost Advisory	TOP	19 hr
Oct 28, 3:58 AM CDT	Freeze Watch	TOP	11 hr
Oct 28, 3:03 PM CDT	Freeze Warning	TOP	18 hr
Nov 9, 3:04 PM CST	Fire Weather Watch	TOP	21 hr
Nov 10, 11:43 AM CST	Red Flag Warning	TOP	32 hr
Nov 10, 3:18 PM CST	Wind Advisory	TOP	32 hr
Nov 10, 10:25 PM CST	High Wind Warning	TOP	20 hr
Nov 11, 12:02 PM CST	Special Weather Statement	TOP	43 min
Nov 24, 4:10 PM CST	Winter Storm Watch	TOP	36 hr
Nov 25, 3:51 PM CST	Winter Storm Warning	TOP	42 hr
Nov 26, 2:20 PM CST	Mesoscale Discussion	SPC	5 hr
Nov 26, 3:26 PM CST	Winter Weather Advisory	TOP	72 hr
Nov 26, 7:18 PM CST	Mesoscale Discussion	SPC	6 hr
Nov 29, 3:05 PM CST	Winter Storm Warning	TOP	19 hr
Dec 12, 5:42 PM CST	Mesoscale Discussion	SPC	2 hr
Dec 26, 3:41 AM CST	Winter Storm Watch	TOP	24 hr
Dec 27, 4:06 AM CST	Winter Storm Warning	TOP	34 hr
Dec 28, 3:46 AM CST	Winter Weather Advisory	TOP	14 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	20
Severe Thunderstorm Watch	6
Tornado Watch	3
Mesoscale Discussion	38
Special Weather Statement	23
Flooding
Areal Flood Warning	1
Flash Flood Warning	4
River Flood Warning	1
Flash Flood Watch	6
Areal Flood Advisory	5
Winter
Winter Storm Warning	3
Winter Storm Watch	2
Winter Weather Advisory	8
Heat
Excessive Heat Warning	1
Heat Advisory	9
Cold
Freeze Warning	1
Freeze Watch	1
Frost Advisory	2
Wind Chill Advisory	4
Wind and dust
High Wind Warning	1
Wind Advisory	4
Fire
Red Flag Warning	6
Fire Weather Watch	4
Fog and smoke
Dense 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 2014 2016

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.