Weather alerts in Nemaha County, Kansas, 2024

180 weather alerts in 2024, 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 2024. Tap one for its archive.

Alerts: 180
Warnings: 54
Watches: 34
Advisories: 39
Busiest month: April35 alerts
Busiest day: April 30, 202411 alerts

Over time

By month

Warning verification

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

2 of 9 tornado warnings covering Nemaha County in 2024 had a tornado report inside them; 4 of 4 tornado reports fell inside a warning, on average 23 minutes after it went out.

Nemaha County, 2024

	Warnings	With a report	False alarm ratio	Reports	Inside a warning	Mean lead time
Tornado warnings	9	2	78%	4	100%	23 min
Severe thunderstorm warnings	34	17	50%	16	75%	28 min
Flash flood warnings	1	0	100%	0

Each office's whole area, 2024

	Warnings	With a report	False alarm ratio	Reports	Inside a warning	Mean lead time
NWS Topeka, KS: tornado warnings	52	20	62%	25	96%	13 min
NWS Topeka, KS: severe thunderstorm warnings	346	163	53%	481	84%	21 min
NWS Topeka, KS: flash flood warnings	20	10	50%	14	86%	76 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 3, 12:13 AM CST	Dense Fog Advisory	TOP	12 hr
Jan 4, 12:04 AM CST	Dense Fog Advisory	TOP	12 hr
Jan 5, 2:42 PM CST	Winter Storm Watch	TOP	47 hr
Jan 7, 3:50 AM CST	Winter Storm Warning	TOP	56 hr
Jan 8, 9:27 AM CST	Mesoscale Discussion	SPC	3 hr
Jan 10, 2:57 AM CST	Winter Storm Watch	TOP	18 hr
Jan 10, 2:48 PM CST	Wind Chill Watch	TOP	37 hr
Jan 10, 9:17 PM CST	Winter Weather Advisory	TOP	45 hr
Jan 12, 3:52 AM CST	Wind Chill Warning	TOP	4 days
Jan 17, 1:49 PM CST	Wind Chill Watch	TOP	24 hr
Jan 17, 1:49 PM CST	Wind Chill Advisory	TOP	46 hr
Jan 18, 2:46 AM CST	Wind Chill Advisory	TOP	57 hr
Jan 21, 3:16 AM CST	Winter Weather Advisory	TOP	33 hr
Jan 22, 2:14 PM CST	Dense Fog Advisory	TOP	22 hr
Jan 22, 2:14 PM CST	Winter Weather Advisory	TOP	19 hr
Jan 23, 2:26 PM CST	Dense Fog Advisory	TOP	22 hr
Jan 23, 2:28 PM CST	Winter Weather Advisory	TOP	18 hr
Jan 24, 2:13 PM CST	Dense Fog Advisory	TOP	22 hr
Jan 25, 1:58 PM CST	Dense Fog Advisory	TOP	21 hr
Feb 5, 10:32 PM CST	Dense Fog Advisory	TOP	11 hr
Feb 27, 3:17 AM CST	Wind Advisory	TOP	20 hr
Feb 28, 1:50 PM CST	Red Flag Warning	TOP	30 hr
Mar 2, 1:30 PM CST	Fire Weather Watch	TOP	14 hr
Mar 3, 3:58 AM CST	Red Flag Warning	TOP	14 hr
Mar 10, 5:14 AM CDT	Fire Weather Watch	TOP	23 hr
Mar 10, 2:09 PM CDT	Red Flag Warning	TOP	29 hr
Mar 13, 3:54 PM CDT	Mesoscale Discussion	SPC	2 hr
Mar 13, 5:29 PM CDT	Severe Thunderstorm Watch	SPC	8 hr
Mar 13, 8:10 PM CDT	Severe Thunderstorm Warning	TOP	35 min
Mar 13, 8:36 PM CDT	Severe Thunderstorm Warning Considerable damage threat	TOP	39 min
Mar 14, 1:20 AM CDT	Special Weather Statement	TOP	40 min
Mar 23, 2:43 AM CDT	Wind Advisory	TOP	48 hr
Apr 5, 1:30 PM CDT	Wind Advisory	TOP	31 hr
Apr 6, 5:03 PM CDT	Mesoscale Discussion	SPC	87 min
Apr 15, 9:07 PM CDT	Mesoscale Discussion	SPC	2 hr
Apr 16, 2:14 AM CDT	Tornado Watch	SPC	6 hr
Apr 16, 2:45 AM CDT	Wind Advisory	TOP	16 hr
Apr 16, 3:56 AM CDT	Special Weather Statement	TOP	34 min
Apr 16, 6:00 AM CDT	Mesoscale Discussion	SPC	2 hr
Apr 17, 8:31 PM CDT	Mesoscale Discussion	SPC	2 hr
Apr 17, 11:41 PM CDT	Severe Thunderstorm Watch	SPC	6 hr
Apr 20, 1:49 PM CDT	Frost Advisory	TOP	18 hr
Apr 21, 1:38 PM CDT	Wind Advisory	TOP	28 hr
Apr 26, 12:52 PM CDT	Tornado Watch	SPC	6 hr
Apr 26, 1:14 PM CDT	Flood Watch	TOP	45 hr
Apr 26, 2:31 PM CDT	Mesoscale Discussion	SPC	89 min
Apr 26, 3:29 PM CDT	Severe Thunderstorm Warning Considerable damage threat	TOP	46 min
Apr 26, 3:47 PM CDT	Tornado Watch	SPC	8 hr
Apr 26, 4:12 PM CDT	Severe Thunderstorm Warning Considerable damage threat	TOP	17 min
Apr 26, 4:35 PM CDT	Severe Thunderstorm Warning Considerable damage threat	TOP	25 min
Apr 27, 11:33 AM CDT	Mesoscale Discussion	SPC	117 min
Apr 27, 11:51 AM CDT	Tornado Watch	SPC	8 hr
Apr 27, 2:14 PM CDT	Tornado Warning	TOP	46 min
Apr 27, 2:55 PM CDT	Tornado Warning Tornado observed	TOP	49 min
Apr 27, 3:01 PM CDT	Tornado Warning	TOP	29 min
Apr 27, 3:40 PM CDT	Mesoscale Discussion	SPC	95 min
Apr 30, 2:35 PM CDT	Mesoscale Discussion	SPC	115 min
Apr 30, 3:28 PM CDT	Tornado Watch	SPC	7 hr
Apr 30, 3:59 PM CDT	Severe Thunderstorm Warning Considerable damage threat	TOP	31 min
Apr 30, 4:26 PM CDT	Severe Thunderstorm Warning Considerable damage threat	TOP	34 min
Apr 30, 4:28 PM CDT	Severe Thunderstorm Warning Considerable damage threat	TOP	32 min
Apr 30, 4:35 PM CDT	Tornado Warning	TOP	25 min
Apr 30, 4:49 PM CDT	Severe Thunderstorm Warning Considerable damage threat	TOP	26 min
Apr 30, 4:55 PM CDT	Tornado Warning	TOP	35 min
Apr 30, 5:28 PM CDT	Tornado Warning	TOP	32 min
Apr 30, 5:30 PM CDT	Mesoscale Discussion	SPC	90 min
Apr 30, 5:46 PM CDT	Tornado Warning	TOP	29 min
May 1, 11:27 PM CDT	Mesoscale Discussion	SPC	93 min
May 1, 11:46 PM CDT	Severe Thunderstorm Watch	SPC	6 hr
May 2, 2:38 AM CDT	Mesoscale Discussion	SPC	67 min
May 3, 9:47 PM CDT	Severe Thunderstorm Watch	SPC	6 hr
May 4, 1:02 AM CDT	Mesoscale Discussion	SPC	118 min
May 6, 3:07 PM CDT	Mesoscale Discussion	SPC	113 min
May 6, 3:49 PM CDT	Tornado Watch	SPC	8 hr
May 6, 8:00 PM CDT	Severe Thunderstorm Warning Considerable damage threat	TOP	30 min
May 6, 8:06 PM CDT	Mesoscale Discussion	SPC	84 min
May 6, 8:22 PM CDT	Severe Thunderstorm Warning	TOP	23 min
May 6, 8:43 PM CDT	Severe Thunderstorm Warning	TOP	47 min
May 6, 9:18 PM CDT	Severe Thunderstorm Warning	TOP	27 min
May 6, 9:38 PM CDT	Special Weather Statement	TOP	37 min
May 6, 10:00 PM CDT	Areal Flood Advisory	TOP	3 hr
May 6, 10:02 PM CDT	Severe Thunderstorm Warning	TOP	17 min
May 19, 5:17 PM CDT	Mesoscale Discussion	SPC	118 min
May 19, 5:55 PM CDT	Mesoscale Discussion	SPC	95 min
May 19, 6:25 PM CDT	Severe Thunderstorm Watch	SPC	8 hr
May 24, 1:15 AM CDT	Mesoscale Discussion	SPC	2 hr
May 24, 1:33 AM CDT	Severe Thunderstorm Watch	SPC	4 hr
May 24, 3:17 AM CDT	Special Weather Statement	TOP	43 min
May 24, 4:44 AM CDT	Special Weather Statement	TOP	31 min
May 25, 9:04 PM CDT	Tornado Watch	SPC	8 hr
May 25, 9:41 PM CDT	Mesoscale Discussion	SPC	2 hr
May 25, 9:52 PM CDT	Severe Thunderstorm Warning	TOP	38 min
May 25, 9:55 PM CDT	Severe Thunderstorm Warning	TOP	35 min
May 25, 10:26 PM CDT	Severe Thunderstorm Warning	TOP	49 min
May 25, 10:53 PM CDT	Severe Thunderstorm Warning	TOP	52 min
May 31, 4:03 AM CDT	Areal Flood Advisory	TOP	4 hr
Jun 2, 2:54 AM CDT	Mesoscale Discussion	SPC	96 min
Jun 4, 2:25 PM CDT	Severe Thunderstorm Watch	SPC	9 hr
Jun 7, 5:02 PM CDT	Mesoscale Discussion	SPC	118 min
Jun 7, 5:52 PM CDT	Severe Thunderstorm Watch	SPC	7 hr
Jun 7, 9:12 PM CDT	Mesoscale Discussion	SPC	93 min
Jun 7, 10:14 PM CDT	Mesoscale Discussion	SPC	91 min
Jun 7, 11:05 PM CDT	Special Weather Statement	TOP	25 min
Jun 12, 3:13 PM CDT	Heat Advisory	TOP	29 hr
Jun 13, 2:02 PM CDT	Mesoscale Discussion	SPC	118 min
Jun 13, 2:59 PM CDT	Severe Thunderstorm Watch	SPC	10 hr
Jun 13, 10:28 PM CDT	Severe Thunderstorm Warning	TOP	25 min
Jun 13, 10:55 PM CDT	Special Weather Statement	TOP	35 min
Jun 13, 11:23 PM CDT	Special Weather Statement	TOP	37 min
Jun 15, 4:24 AM CDT	Special Weather Statement	TOP	36 min
Jun 15, 3:05 PM CDT	Mesoscale Discussion	SPC	2 hr
Jun 15, 3:52 PM CDT	Tornado Watch	SPC	6 hr
Jun 15, 6:24 PM CDT	Severe Thunderstorm Warning	TOP	51 min
Jun 15, 7:04 PM CDT	Severe Thunderstorm Warning	TOP	41 min
Jun 15, 7:43 PM CDT	Severe Thunderstorm Warning	TOP	47 min
Jun 16, 2:30 AM CDT	Areal Flood Advisory	TOP	5 hr
Jun 18, 9:32 PM CDT	Special Weather Statement	TOP	58 min
Jun 18, 10:19 PM CDT	Areal Flood Advisory	TOP	4 hr
Jun 18, 11:43 PM CDT	Flash Flood Warning	TOP	2 hr
Jun 19, 2:20 AM CDT	Areal Flood Warning	TOP	14 hr
Jun 23, 2:22 AM CDT	Heat Advisory	TOP	66 hr
Jun 25, 11:13 PM CDT	Mesoscale Discussion	SPC	62 min
Jun 25, 11:42 PM CDT	Severe Thunderstorm Watch	SPC	6 hr
Jun 26, 2:08 AM CDT	Mesoscale Discussion	SPC	97 min
Jun 26, 2:15 AM CDT	Severe Thunderstorm Warning	TOP	45 min
Jun 26, 2:41 AM CDT	Severe Thunderstorm Warning Considerable damage threat	TOP	34 min
Jun 28, 3:23 PM CDT	Mesoscale Discussion	SPC	3 hr
Jun 28, 5:20 PM CDT	Tornado Watch	SPC	6 hr
Jun 28, 7:11 PM CDT	Severe Thunderstorm Warning	TOP	34 min
Jun 28, 7:30 PM CDT	Mesoscale Discussion	SPC	90 min
Jul 6, 5:17 PM CDT	Severe Thunderstorm Watch	SPC	5 hr
Jul 6, 7:56 PM CDT	Mesoscale Discussion	SPC	64 min
Jul 10, 2:44 PM CDT	Severe Thunderstorm Watch	SPC	7 hr
Jul 10, 5:04 PM CDT	Mesoscale Discussion	SPC	86 min
Jul 10, 8:11 PM CDT	Mesoscale Discussion	SPC	94 min
Jul 11, 10:36 PM CDT	Mesoscale Discussion	SPC	84 min
Jul 12, 2:33 PM CDT	Heat Advisory	TOP	3 days
Jul 16, 4:00 AM CDT	Severe Thunderstorm Watch	SPC	5 hr
Jul 16, 6:46 AM CDT	Mesoscale Discussion	SPC	119 min
Jul 27, 2:22 PM CDT	Excessive Heat Watch	TOP	24 hr
Jul 28, 2:09 PM CDT	Excessive Heat Warning	TOP	4 days
Jul 28, 2:09 PM CDT	Heat Advisory	TOP	38 hr
Jul 31, 5:12 PM CDT	Mesoscale Discussion	SPC	2 hr
Jul 31, 5:52 PM CDT	Severe Thunderstorm Watch	SPC	7 hr
Jul 31, 8:37 PM CDT	Severe Thunderstorm Warning	TOP	38 min
Jul 31, 8:46 PM CDT	Severe Thunderstorm Warning	TOP	44 min
Jul 31, 9:07 PM CDT	Severe Thunderstorm Warning	TOP	38 min
Aug 14, 3:57 PM CDT	Mesoscale Discussion	SPC	3 hr
Aug 14, 5:34 PM CDT	Severe Thunderstorm Watch	SPC	7 hr
Aug 14, 7:09 PM CDT	Mesoscale Discussion	SPC	96 min
Aug 14, 7:41 PM CDT	Tornado Warning	TOP	34 min
Aug 14, 8:13 PM CDT	Tornado Warning	TOP	32 min
Aug 14, 8:38 PM CDT	Severe Thunderstorm Warning	TOP	22 min
Aug 14, 8:54 PM CDT	Severe Thunderstorm Warning	TOP	36 min
Aug 14, 9:20 PM CDT	Mesoscale Discussion	SPC	115 min
Aug 14, 9:24 PM CDT	Severe Thunderstorm Warning	TOP	36 min
Aug 14, 9:32 PM CDT	Areal Flood Advisory	TOP	3 hr
Aug 18, 11:45 AM CDT	Mesoscale Discussion	SPC	2 hr
Aug 23, 1:42 PM CDT	Heat Advisory	TOP	3 days
Sep 24, 4:01 PM CDT	Special Weather Statement	TOP	29 min
Oct 4, 2:07 PM CDT	Red Flag Warning	TOP	30 hr
Oct 14, 2:49 AM CDT	Freeze Watch	TOP	11 hr
Oct 14, 1:48 PM CDT	Freeze Warning	TOP	43 hr
Oct 15, 3:13 PM CDT	Fire Weather Watch	TOP	23 hr
Oct 16, 2:03 PM CDT	Red Flag Warning	TOP	30 hr
Oct 28, 2:56 AM CDT	Wind Advisory	TOP	51 hr
Oct 30, 12:36 PM CDT	Severe Thunderstorm Warning	TOP	24 min
Oct 30, 12:49 PM CDT	Severe Thunderstorm Warning	TOP	26 min
Oct 30, 1:05 PM CDT	Mesoscale Discussion	SPC	115 min
Oct 30, 1:13 PM CDT	Severe Thunderstorm Warning Considerable damage threat	TOP	32 min
Oct 30, 3:03 PM CDT	Mesoscale Discussion	SPC	117 min
Nov 18, 2:11 AM CST	Wind Advisory	TOP	20 hr
Dec 9, 12:35 AM CST	Dense Fog Advisory	TOP	9 hr
Dec 13, 1:31 AM CST	Winter Weather Advisory	TOP	19 hr
Dec 14, 8:00 PM CST	Dense Fog Advisory	TOP	14 hr
Dec 24, 1:38 PM CST	Dense Fog Advisory	TOP	22 hr
Dec 25, 1:36 PM CST	Dense Fog Advisory	TOP	22 hr
Dec 26, 1:59 PM CST	Dense Fog Advisory	TOP	20 hr
Dec 27, 9:00 PM CST	Dense Fog Advisory	TOP	13 hr
Dec 28, 6:16 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	34
Tornado Warning	9
Severe Thunderstorm Watch	15
Tornado Watch	9
Mesoscale Discussion	42
Special Weather Statement	11
Flooding
Areal Flood Warning	1
Flash Flood Warning	1
Flood Watch	1
Areal Flood Advisory	5
Winter
Winter Storm Warning	1
Winter Storm Watch	2
Winter Weather Advisory	5
Heat
Excessive Heat Warning	1
Excessive Heat Watch	1
Heat Advisory	5
Cold
Freeze Warning	1
Wind Chill Warning	1
Freeze Watch	1
Wind Chill Watch	2
Frost Advisory	1
Wind Chill Advisory	2
Wind and dust
Wind Advisory	7
Fire
Red Flag Warning	5
Fire Weather Watch	3
Fog and smoke
Dense Fog Advisory	14

The busiest days

Days with the most alerts issued, by UTC date.

Nearby

Alerts in force now Tornadoes on record Forecast The radar archive 2023 2025

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.