Weather alerts in Nemaha County, Kansas, 2019

238 weather alerts in 2019, 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 2019. Tap one for its archive.

Alerts: 238
Warnings: 72
Watches: 39
Advisories: 47
Busiest month: May63 alerts
Busiest day: June 21, 201916 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 8 tornado warnings covering Nemaha County in 2019 had a tornado report inside them; 3 of 3 tornado reports fell inside a warning, on average 13 minutes after it went out.

Nemaha County, 2019

	Warnings	With a report	False alarm ratio	Reports	Inside a warning	Mean lead time
Tornado warnings	8	1	88%	3	100%	13 min
Severe thunderstorm warnings	37	13	65%	16	88%	21 min
Flash flood warnings	9	1	89%	0

Each office's whole area, 2019

	Warnings	With a report	False alarm ratio	Reports	Inside a warning	Mean lead time
NWS Topeka, KS: tornado warnings	52	15	71%	36	89%	18 min
NWS Topeka, KS: severe thunderstorm warnings	330	145	56%	363	85%	24 min
NWS Topeka, KS: flash flood warnings	74	30	59%	77	94%	90 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 10, 3:14 PM CST	Winter Weather Advisory	TOP	48 hr
Jan 14, 9:06 PM CST	Dense Fog Advisory	TOP	16 hr
Jan 15, 3:31 PM CST	Dense Fog Advisory	TOP	24 hr
Jan 16, 4:04 AM CST	Winter Weather Advisory	TOP	28 hr
Jan 17, 3:03 PM CST	Winter Weather Advisory	TOP	35 hr
Jan 21, 3:01 PM CST	Winter Weather Advisory	TOP	36 hr
Jan 22, 1:20 PM CST	Mesoscale Discussion	SPC	3 hr
Jan 24, 3:04 PM CST	Wind Chill Advisory	TOP	18 hr
Jan 27, 3:24 PM CST	Wind Advisory	TOP	27 hr
Jan 28, 3:35 AM CST	Wind Chill Watch	TOP	11 hr
Jan 28, 5:32 AM CST	High Wind Warning	TOP	7 hr
Jan 28, 3:01 PM CST	Wind Chill Advisory	TOP	45 hr
Jan 29, 12:11 PM CST	Wind Chill Warning	TOP	24 hr
Jan 30, 3:37 AM CST	Wind Chill Advisory	TOP	25 hr
Feb 2, 3:34 AM CST	Dense Fog Advisory	TOP	8 hr
Feb 5, 3:12 AM CST	Winter Weather Advisory	TOP	56 hr
Feb 5, 3:26 PM CST	Winter Weather Advisory	TOP	44 hr
Feb 6, 7:51 PM CST	Mesoscale Discussion	SPC	6 hr
Feb 7, 11:10 AM CST	Wind Chill Advisory	TOP	21 hr
Feb 10, 4:27 AM CST	Winter Weather Advisory	TOP	6 hr
Feb 10, 3:49 PM CST	Winter Weather Advisory	TOP	32 hr
Feb 14, 3:15 AM CST	Winter Weather Advisory	TOP	40 hr
Feb 16, 2:40 AM CST	Winter Weather Advisory	TOP	27 hr
Feb 16, 7:26 PM CST	Mesoscale Discussion	SPC	5 hr
Feb 18, 3:25 PM CST	Winter Storm Watch	TOP	12 hr
Feb 19, 3:24 AM CST	Winter Storm Warning	TOP	28 hr
Feb 20, 7:18 AM CST	Winter Weather Advisory	TOP	102 min
Feb 21, 2:24 PM CST	Winter Storm Watch	TOP	23 hr
Feb 22, 1:53 PM CST	Blizzard Warning	TOP	31 hr
Feb 22, 1:53 PM CST	Winter Weather Advisory	TOP	19 hr
Feb 22, 1:53 PM CST	Winter Weather Advisory	TOP	32 hr
Mar 1, 3:23 PM CST	Winter Weather Advisory	TOP	45 hr
Mar 2, 3:45 AM CST	Wind Chill Advisory	TOP	56 hr
Mar 8, 3:49 PM CST	Wind Advisory	TOP	26 hr
Mar 11, 3:24 AM CDT	Flood Watch	TOP	56 hr
Mar 12, 3:21 PM CDT	Wind Advisory	TOP	52 hr
Mar 13, 5:43 PM CDT	Special Weather Statement	TOP	32 min
Mar 27, 11:47 AM CDT	Wind Advisory	TOP	7 hr
Mar 28, 9:55 AM CDT	Mesoscale Discussion	SPC	2 hr
Apr 5, 1:46 AM CDT	Dense Fog Advisory	TOP	7 hr
Apr 6, 7:36 PM CDT	Special Weather Statement	TOP	24 min
Apr 6, 8:02 PM CDT	Severe Thunderstorm Warning	TOP	28 min
Apr 10, 3:54 PM CDT	Wind Advisory	TOP	20 hr
Apr 10, 10:08 PM CDT	Mesoscale Discussion	SPC	2 hr
Apr 11, 12:15 PM CDT	Freeze Warning	TOP	22 hr
Apr 12, 3:44 PM CDT	Freeze Warning	TOP	17 hr
Apr 13, 1:57 PM CDT	Freeze Warning	TOP	19 hr
Apr 25, 3:36 AM CDT	Dense Fog Advisory	TOP	5 hr
May 3, 10:32 PM CDT	Dense Fog Advisory	TOP	11 hr
May 5, 5:01 PM CDT	Mesoscale Discussion	SPC	89 min
May 5, 6:33 PM CDT	Mesoscale Discussion	SPC	87 min
May 5, 6:52 PM CDT	Severe Thunderstorm Watch	SPC	5 hr
May 5, 7:34 PM CDT	Special Weather Statement	TOP	56 min
May 5, 8:08 PM CDT	Special Weather Statement	TOP	37 min
May 5, 8:35 PM CDT	Special Weather Statement	TOP	25 min
May 5, 8:44 PM CDT	Special Weather Statement	TOP	31 min
May 5, 9:18 PM CDT	Mesoscale Discussion	SPC	57 min
May 6, 3:50 AM CDT	Flash Flood Watch	TOP	68 hr
May 6, 3:49 PM CDT	Severe Thunderstorm Watch	SPC	5 hr
May 6, 4:18 PM CDT	Special Weather Statement	TOP	42 min
May 6, 5:08 PM CDT	Mesoscale Discussion	SPC	97 min
May 8, 10:12 AM CDT	River Flood Warning	TOP	19 hr
May 17, 11:45 PM CDT	Severe Thunderstorm Watch	SPC	3 hr
May 19, 4:17 AM CDT	Flash Flood Watch	TOP	63 hr
May 21, 10:38 AM CDT	Special Weather Statement	TOP	52 min
May 21, 11:27 AM CDT	Special Weather Statement	TOP	63 min
May 21, 3:56 PM CDT	Severe Thunderstorm Watch	SPC	6 hr
May 21, 6:06 PM CDT	Mesoscale Discussion	SPC	114 min
May 21, 6:14 PM CDT	Severe Thunderstorm Warning	TOP	46 min
May 21, 6:36 PM CDT	Severe Thunderstorm Warning	TOP	39 min
May 21, 6:39 PM CDT	Tornado Warning	TOP	36 min
May 21, 7:00 PM CDT	Tornado Warning	TOP	30 min
May 21, 7:05 PM CDT	Tornado Warning	TOP	25 min
May 22, 3:24 AM CDT	Flash Flood Watch	TOP	5 days
May 23, 7:42 PM CDT	Severe Thunderstorm Watch	SPC	4 hr
May 23, 11:33 PM CDT	Mesoscale Discussion	SPC	87 min
May 24, 1:37 AM CDT	Tornado Watch	SPC	5 hr
May 24, 3:41 AM CDT	Special Weather Statement	TOP	49 min
May 24, 4:04 AM CDT	Severe Thunderstorm Warning	TOP	41 min
May 24, 4:05 AM CDT	Mesoscale Discussion	SPC	115 min
May 24, 4:29 AM CDT	Severe Thunderstorm Warning	TOP	31 min
May 24, 4:37 AM CDT	Severe Thunderstorm Warning	TOP	23 min
May 24, 8:17 AM CDT	River Flood Warning	TOP	21 hr
May 25, 11:33 PM CDT	Areal Flood Advisory	TOP	4 hr
May 26, 8:53 PM CDT	Mesoscale Discussion	SPC	2 hr
May 27, 1:54 AM CDT	Mesoscale Discussion	SPC	111 min
May 27, 2:32 AM CDT	Severe Thunderstorm Warning	TOP	58 min
May 27, 2:41 AM CDT	Severe Thunderstorm Watch	SPC	4 hr
May 27, 3:06 AM CDT	Special Weather Statement	TOP	54 min
May 27, 10:55 PM CDT	Severe Thunderstorm Watch	SPC	7 hr
May 28, 12:04 PM CDT	Mesoscale Discussion	SPC	86 min
May 28, 2:21 PM CDT	Severe Thunderstorm Warning	TOP	39 min
May 28, 2:47 PM CDT	Severe Thunderstorm Warning	TOP	43 min
May 28, 2:55 PM CDT	Mesoscale Discussion	SPC	95 min
May 28, 3:13 PM CDT	Severe Thunderstorm Watch	SPC	7 hr
May 28, 3:19 PM CDT	Flash Flood Warning	TOP	4 hr
May 28, 3:31 PM CDT	Severe Thunderstorm Warning	TOP	29 min
May 28, 7:36 PM CDT	Areal Flood Warning	TOP	3 hr
May 28, 7:54 PM CDT	Severe Thunderstorm Warning	TOP	31 min
May 28, 8:27 PM CDT	Special Weather Statement	TOP	18 min
May 28, 8:52 PM CDT	Severe Thunderstorm Warning	TOP	53 min
May 28, 8:56 PM CDT	Flash Flood Warning	TOP	4 hr
May 28, 9:26 PM CDT	Tornado Warning	TOP	19 min
May 28, 9:35 PM CDT	Severe Thunderstorm Warning	TOP	40 min
May 28, 9:36 PM CDT	Severe Thunderstorm Watch	SPC	4 hr
May 28, 9:42 PM CDT	Tornado Warning	TOP	9 min
May 28, 9:52 PM CDT	Mesoscale Discussion	SPC	53 min
May 29, 12:57 AM CDT	Areal Flood Warning	TOP	3 hr
May 29, 1:57 AM CDT	River Flood Warning	TOP	19 hr
May 30, 2:41 PM CDT	Flash Flood Warning	TOP	8 hr
May 30, 10:27 PM CDT	Flash Flood Watch	TOP	3 days
Jun 3, 3:55 PM CDT	Mesoscale Discussion	SPC	2 hr
Jun 5, 5:21 PM CDT	Mesoscale Discussion	SPC	54 min
Jun 6, 4:03 AM CDT	Areal Flood Advisory	TOP	3 hr
Jun 14, 11:24 PM CDT	Mesoscale Discussion	SPC	96 min
Jun 15, 3:54 PM CDT	Special Weather Statement	TOP	36 min
Jun 15, 3:56 PM CDT	Mesoscale Discussion	SPC	3 hr
Jun 20, 6:56 PM CDT	Severe Thunderstorm Warning	TOP	49 min
Jun 20, 7:15 PM CDT	Mesoscale Discussion	SPC	60 min
Jun 20, 7:43 PM CDT	Severe Thunderstorm Warning	TOP	47 min
Jun 20, 8:06 PM CDT	Special Weather Statement	TOP	24 min
Jun 20, 8:26 PM CDT	Severe Thunderstorm Warning	TOP	32 min
Jun 21, 2:07 AM CDT	Mesoscale Discussion	SPC	83 min
Jun 21, 2:39 AM CDT	Severe Thunderstorm Watch	SPC	8 hr
Jun 21, 3:50 AM CDT	Special Weather Statement	TOP	55 min
Jun 21, 4:34 AM CDT	Mesoscale Discussion	SPC	86 min
Jun 21, 7:26 AM CDT	Mesoscale Discussion	SPC	94 min
Jun 21, 7:44 AM CDT	Special Weather Statement	TOP	61 min
Jun 21, 8:12 AM CDT	Special Weather Statement	TOP	63 min
Jun 21, 8:22 AM CDT	Severe Thunderstorm Warning	TOP	38 min
Jun 21, 6:24 PM CDT	Mesoscale Discussion	SPC	66 min
Jun 21, 6:34 PM CDT	Special Weather Statement	TOP	26 min
Jun 21, 6:52 PM CDT	Severe Thunderstorm Warning	TOP	38 min
Jun 21, 6:59 PM CDT	Tornado Warning	TOP	31 min
Jun 21, 7:01 PM CDT	Severe Thunderstorm Watch	SPC	7 hr
Jun 21, 7:22 PM CDT	Severe Thunderstorm Warning	TOP	38 min
Jun 21, 7:53 PM CDT	Flash Flood Warning	TOP	4 hr
Jun 21, 8:22 PM CDT	Severe Thunderstorm Warning	TOP	38 min
Jun 21, 8:27 PM CDT	Tornado Warning	TOP	33 min
Jun 21, 8:55 PM CDT	Severe Thunderstorm Warning	TOP	39 min
Jun 21, 9:16 PM CDT	Severe Thunderstorm Warning	TOP	44 min
Jun 21, 11:55 PM CDT	Areal Flood Warning	TOP	6 hr
Jun 22, 1:58 PM CDT	Mesoscale Discussion	SPC	2 hr
Jun 22, 2:42 PM CDT	Severe Thunderstorm Watch	SPC	7 hr
Jun 22, 3:38 PM CDT	Flash Flood Watch	TOP	23 hr
Jun 22, 6:07 PM CDT	Flash Flood Warning	TOP	4 hr
Jun 22, 7:14 PM CDT	Flash Flood Warning	TOP	4 hr
Jun 22, 7:39 PM CDT	Severe Thunderstorm Warning	TOP	51 min
Jun 22, 7:46 PM CDT	Mesoscale Discussion	SPC	89 min
Jun 22, 11:04 PM CDT	Areal Flood Warning	TOP	6 hr
Jun 23, 1:10 AM CDT	River Flood Warning	TOP	17 hr
Jun 25, 1:58 PM CDT	Mesoscale Discussion	SPC	92 min
Jun 25, 3:08 PM CDT	Severe Thunderstorm Watch	SPC	9 hr
Jun 26, 6:34 AM CDT	Mesoscale Discussion	SPC	116 min
Jun 27, 3:14 PM CDT	Heat Advisory	TOP	29 hr
Jun 28, 3:13 AM CDT	Heat Advisory	TOP	41 hr
Jun 29, 2:58 AM CDT	Heat Advisory	TOP	40 hr
Jul 3, 2:37 PM CDT	Special Weather Statement	TOP	38 min
Jul 5, 4:54 AM CDT	Mesoscale Discussion	SPC	2 hr
Jul 5, 2:27 PM CDT	Flash Flood Watch	TOP	16 hr
Jul 10, 5:58 AM CDT	Severe Thunderstorm Watch	SPC	3 hr
Jul 10, 6:25 AM CDT	Severe Thunderstorm Warning	TOP	50 min
Jul 10, 7:12 AM CDT	Tornado Warning	TOP	17 min
Jul 10, 7:15 AM CDT	Severe Thunderstorm Warning	TOP	45 min
Jul 10, 7:57 AM CDT	Severe Thunderstorm Warning	TOP	33 min
Jul 15, 3:46 PM CDT	Excessive Heat Watch	TOP	24 hr
Jul 16, 3:37 PM CDT	Excessive Heat Warning	TOP	5 days
Jul 20, 11:01 PM CDT	Mesoscale Discussion	SPC	119 min
Jul 29, 12:00 AM CDT	Special Weather Statement	TOP	30 min
Jul 31, 3:26 PM CDT	Flash Flood Watch	TOP	60 hr
Aug 7, 4:08 AM CDT	Severe Thunderstorm Watch	SPC	6 hr
Aug 7, 4:44 AM CDT	Special Weather Statement	TOP	31 min
Aug 7, 5:22 AM CDT	Severe Thunderstorm Warning	TOP	38 min
Aug 12, 1:15 AM CDT	Mesoscale Discussion	SPC	90 min
Aug 12, 2:37 AM CDT	Special Weather Statement	TOP	23 min
Aug 15, 11:11 AM CDT	Mesoscale Discussion	SPC	2 hr
Aug 15, 12:25 PM CDT	Special Weather Statement	TOP	35 min
Aug 15, 12:46 PM CDT	Special Weather Statement	TOP	29 min
Aug 15, 3:05 PM CDT	Special Weather Statement	TOP	25 min
Aug 15, 3:21 PM CDT	Severe Thunderstorm Warning	TOP	24 min
Aug 15, 3:43 PM CDT	Severe Thunderstorm Warning	TOP	47 min
Aug 15, 6:10 PM CDT	Tornado Watch	SPC	6 hr
Aug 15, 6:35 PM CDT	Severe Thunderstorm Warning	TOP	40 min
Aug 15, 6:40 PM CDT	Severe Thunderstorm Warning	TOP	35 min
Aug 15, 7:03 PM CDT	Mesoscale Discussion	SPC	117 min
Aug 15, 7:09 PM CDT	Severe Thunderstorm Warning	TOP	51 min
Aug 15, 7:55 PM CDT	Severe Thunderstorm Warning	TOP	65 min
Aug 15, 8:22 PM CDT	Mesoscale Discussion	SPC	113 min
Aug 15, 11:11 PM CDT	Mesoscale Discussion	SPC	2 hr
Aug 15, 11:37 PM CDT	Flash Flood Warning	TOP	4 hr
Aug 16, 3:27 AM CDT	Areal Flood Warning	TOP	3 hr
Aug 16, 1:03 PM CDT	Flash Flood Watch	TOP	18 hr
Aug 16, 11:40 PM CDT	Severe Thunderstorm Watch	SPC	7 hr
Aug 17, 1:01 AM CDT	Severe Thunderstorm Warning	TOP	59 min
Aug 17, 2:40 AM CDT	Mesoscale Discussion	SPC	95 min
Aug 17, 4:40 AM CDT	Mesoscale Discussion	SPC	2 hr
Aug 17, 3:16 PM CDT	Flash Flood Watch	TOP	13 hr
Aug 18, 12:05 AM CDT	Special Weather Statement	TOP	25 min
Aug 18, 12:39 AM CDT	Special Weather Statement	TOP	36 min
Aug 18, 2:38 PM CDT	Heat Advisory	TOP	54 hr
Aug 21, 2:42 AM CDT	Special Weather Statement	TOP	48 min
Aug 21, 3:54 AM CDT	Flash Flood Warning	TOP	4 hr
Aug 26, 9:20 AM CDT	Mesoscale Discussion	SPC	85 min
Aug 26, 9:52 AM CDT	Areal Flood Advisory	TOP	2 hr
Aug 29, 7:15 PM CDT	Mesoscale Discussion	SPC	2 hr
Aug 29, 7:50 PM CDT	Severe Thunderstorm Watch	SPC	7 hr
Aug 29, 9:52 PM CDT	Mesoscale Discussion	SPC	83 min
Aug 29, 10:15 PM CDT	Severe Thunderstorm Warning	TOP	30 min
Aug 29, 10:35 PM CDT	Special Weather Statement	TOP	25 min
Aug 29, 10:50 PM CDT	Areal Flood Advisory	TOP	3 hr
Aug 29, 11:02 PM CDT	Special Weather Statement	TOP	28 min
Aug 29, 11:25 PM CDT	Flash Flood Warning	TOP	4 hr
Sep 7, 8:46 PM CDT	Mesoscale Discussion	SPC	59 min
Sep 9, 3:03 PM CDT	Special Weather Statement	TOP	27 min
Sep 9, 3:23 PM CDT	Severe Thunderstorm Warning	TOP	22 min
Sep 20, 3:51 AM CDT	Flash Flood Watch	TOP	55 hr
Sep 21, 5:07 PM CDT	Severe Thunderstorm Watch	SPC	7 hr
Sep 21, 7:25 PM CDT	Mesoscale Discussion	SPC	2 hr
Sep 21, 10:17 PM CDT	Special Weather Statement	TOP	43 min
Sep 21, 10:32 PM CDT	Mesoscale Discussion	SPC	118 min
Sep 23, 12:00 AM CDT	Dense Fog Advisory	TOP	9 hr
Sep 24, 5:30 PM CDT	Mesoscale Discussion	SPC	60 min
Sep 24, 5:42 PM CDT	Severe Thunderstorm Watch	SPC	6 hr
Sep 28, 11:15 PM CDT	Dense Fog Advisory	TOP	6 hr
Sep 30, 3:36 AM CDT	Flash Flood Watch	TOP	57 hr
Oct 1, 2:45 PM CDT	Tornado Watch	SPC	7 hr
Oct 1, 4:47 PM CDT	Severe Thunderstorm Warning	TOP	13 min
Oct 1, 6:05 PM CDT	Mesoscale Discussion	SPC	85 min
Oct 10, 3:19 AM CDT	Freeze Watch	TOP	24 hr
Oct 11, 3:13 AM CDT	Freeze Warning	TOP	30 hr
Oct 17, 2:54 PM CDT	Wind Advisory	TOP	27 hr
Oct 20, 5:30 PM CDT	Mesoscale Discussion	SPC	2 hr
Oct 29, 3:26 AM CDT	Winter Weather Advisory	TOP	46 hr
Nov 26, 3:25 AM CST	Wind Advisory	TOP	23 hr
Nov 27, 3:02 PM CST	Winter Weather Advisory	TOP	33 hr
Nov 29, 3:12 PM CST	Wind Advisory	TOP	48 hr
Dec 14, 3:34 AM CST	Winter Weather Advisory	TOP	40 hr
Dec 16, 9:20 PM CST	Dense Fog 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	37
Tornado Warning	8
Severe Thunderstorm Watch	19
Tornado Watch	3
Mesoscale Discussion	48
Special Weather Statement	32
Flooding
Areal Flood Warning	5
Flash Flood Warning	9
River Flood Warning	4
Flash Flood Watch	11
Flood Watch	1
Areal Flood Advisory	4
Winter
Blizzard Warning	1
Winter Storm Warning	1
Winter Storm Watch	2
Winter Weather Advisory	17
Heat
Excessive Heat Warning	1
Excessive Heat Watch	1
Heat Advisory	4
Cold
Freeze Warning	4
Wind Chill Warning	1
Freeze Watch	1
Wind Chill Watch	1
Wind Chill Advisory	5
Wind and dust
High Wind Warning	1
Wind Advisory	8
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 2018 2020

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.