Weather alerts in Nemaha County, Kansas, 2026

168 weather alerts in 2026, 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 2026. Tap one for its archive.

Alerts: 168
Warnings: 53
Watches: 29
Advisories: 36
Busiest month: June38 alerts
Busiest day: May 18, 202612 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 3 tornado warnings covering Nemaha County in 2026 had a tornado report inside them.

Nemaha County, 2026

	Warnings	With a report	False alarm ratio	Reports	Inside a warning	Mean lead time
Tornado warnings	3	1	67%	0
Severe thunderstorm warnings	33	10	70%	8	75%	17 min
Flash flood warnings	3	1	67%	2	100%	51 min

Each office's whole area, 2026

	Warnings	With a report	False alarm ratio	Reports	Inside a warning	Mean lead time
NWS Topeka, KS: tornado warnings	70	14	80%	20	90%	19 min
NWS Topeka, KS: severe thunderstorm warnings	414	171	59%	407	88%	24 min
NWS Topeka, KS: flash flood warnings	38	10	74%	34	94%	65 min

An office's figures cover every county it serves, including across state lines.

The year is still running; reports filed late and damage surveys can still change these figures.

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 5, 9:06 PM CST	Dense Fog Advisory	TOP	7 hr
Jan 16, 3:56 PM CST	Special Weather Statement	TOP	64 min
Jan 16, 8:12 PM CST	Special Weather Statement	TOP	63 min
Jan 22, 2:53 AM CST	Cold Weather Advisory	TOP	4 days
Jan 22, 1:08 PM CST	Winter Weather Advisory	TOP	61 hr
Feb 15, 1:32 AM CST	Dense Fog Advisory	TOP	8 hr
Feb 16, 2:53 AM CST	Fire Weather Watch	TOP	24 hr
Feb 28, 12:02 PM CST	Winter Weather Advisory	TOP	42 hr
Mar 5, 9:02 PM CST	Special Weather Statement	TOP	28 min
Mar 5, 10:54 PM CST	Special Weather Statement	TOP	36 min
Mar 6, 1:50 PM CST	Mesoscale Discussion	SPC	2 hr
Mar 6, 3:16 PM CST	Tornado Watch	SPC	9 hr
Mar 6, 5:23 PM CST	Mesoscale Discussion	SPC	2 hr
Mar 6, 7:37 PM CST	Special Weather Statement	TOP	23 min
Mar 6, 7:54 PM CST	Special Weather Statement	TOP	36 min
Mar 6, 8:29 PM CST	Special Weather Statement	TOP	31 min
Mar 11, 1:17 AM CDT	Fire Weather Watch	TOP	12 hr
Mar 11, 12:57 PM CDT	Red Flag Warning	TOP	35 hr
Mar 12, 11:27 AM CDT	Wind Advisory	TOP	15 hr
Mar 13, 1:35 PM CDT	High Wind Watch	TOP	22 hr
Mar 14, 11:14 AM CDT	High Wind Warning	TOP	36 hr
Mar 14, 11:14 AM CDT	Wind Advisory	TOP	38 hr
Mar 15, 9:00 AM CDT	Winter Weather Advisory	TOP	11 hr
Mar 19, 1:34 PM CDT	Fire Weather Watch	TOP	47 hr
Mar 20, 11:32 AM CDT	Red Flag Warning	TOP	34 hr
Mar 21, 12:58 PM CDT	Red Flag Warning	TOP	30 hr
Mar 25, 12:06 PM CDT	Fire Weather Watch	TOP	13 hr
Mar 26, 1:31 AM CDT	Red Flag Warning	TOP	18 hr
Mar 26, 1:37 PM CDT	Fire Weather Watch	TOP	21 hr
Mar 26, 1:37 PM CDT	Red Flag Warning	TOP	31 hr
Mar 27, 10:57 AM CDT	Red Flag Warning	TOP	35 hr
Apr 3, 1:26 PM CDT	Mesoscale Discussion	SPC	2 hr
Apr 9, 1:39 PM CDT	Mesoscale Discussion	SPC	3 hr
Apr 9, 5:11 PM CDT	Severe Thunderstorm Watch	SPC	7 hr
Apr 9, 6:33 PM CDT	Mesoscale Discussion	SPC	117 min
Apr 9, 8:42 PM CDT	Mesoscale Discussion	SPC	2 hr
Apr 9, 8:48 PM CDT	Severe Thunderstorm Warning	TOP	27 min
Apr 9, 9:13 PM CDT	Severe Thunderstorm Warning	TOP	35 min
Apr 10, 1:22 AM CDT	Areal Flood Advisory	TOP	3 hr
Apr 11, 7:15 AM CDT	Flash Flood Warning	TOP	5 hr
Apr 11, 12:15 PM CDT	Areal Flood Warning	TOP	3 hr
Apr 11, 1:56 PM CDT	Mesoscale Discussion	SPC	3 hr
Apr 11, 6:36 PM CDT	Special Weather Statement	TOP	24 min
Apr 14, 7:28 PM CDT	Mesoscale Discussion	SPC	2 hr
Apr 14, 9:56 PM CDT	Severe Thunderstorm Watch	SPC	4 hr
Apr 17, 12:42 PM CDT	Mesoscale Discussion	SPC	3 hr
Apr 23, 1:00 PM CDT	Mesoscale Discussion	SPC	2 hr
Apr 23, 2:04 PM CDT	Tornado Watch	SPC	9 hr
Apr 23, 5:38 PM CDT	Severe Thunderstorm Warning	TOP	37 min
Apr 23, 5:43 PM CDT	Severe Thunderstorm Warning Considerable damage threat	TOP	47 min
Apr 23, 6:21 PM CDT	Severe Thunderstorm Warning	TOP	39 min
Apr 23, 6:53 PM CDT	Severe Thunderstorm Warning	TOP	37 min
Apr 25, 6:21 PM CDT	Mesoscale Discussion	SPC	84 min
Apr 26, 11:03 AM CDT	Flood Watch	TOP	20 hr
Apr 26, 11:24 AM CDT	Mesoscale Discussion	SPC	96 min
Apr 26, 12:07 PM CDT	Severe Thunderstorm Watch	SPC	9 hr
Apr 26, 1:51 PM CDT	Severe Thunderstorm Warning	TOP	39 min
Apr 26, 8:38 PM CDT	Mesoscale Discussion	SPC	2 hr
Apr 26, 9:11 PM CDT	Severe Thunderstorm Watch	SPC	7 hr
Apr 30, 1:17 PM CDT	Frost Advisory	TOP	19 hr
May 1, 1:33 PM CDT	Frost Advisory	TOP	18 hr
May 16, 12:17 PM CDT	Wind Advisory	TOP	33 hr
May 16, 4:42 PM CDT	Mesoscale Discussion	SPC	3 hr
May 16, 5:08 PM CDT	Severe Thunderstorm Watch	SPC	9 hr
May 16, 10:15 PM CDT	Mesoscale Discussion	SPC	2 hr
May 17, 12:16 AM CDT	Severe Thunderstorm Warning Destructive damage threat	TOP	44 min
May 17, 12:26 AM CDT	Tornado Warning	TOP	19 min
May 17, 12:33 AM CDT	Mesoscale Discussion	SPC	87 min
May 17, 12:47 AM CDT	Severe Thunderstorm Warning Considerable damage threat	TOP	43 min
May 17, 12:06 PM CDT	Flood Watch	TOP	38 hr
May 17, 3:16 PM CDT	Tornado Watch	SPC	8 hr
May 17, 9:46 PM CDT	Severe Thunderstorm Warning	TOP	44 min
May 17, 10:25 PM CDT	Special Weather Statement	TOP	65 min
May 17, 10:56 PM CDT	Severe Thunderstorm Warning	TOP	32 min
May 18, 11:59 AM CDT	Mesoscale Discussion	SPC	2 hr
May 18, 12:50 PM CDT	Tornado Watch PDS	SPC	7 hr
May 18, 4:13 PM CDT	Severe Thunderstorm Warning	TOP	17 min
May 18, 5:45 PM CDT	Mesoscale Discussion	SPC	2 hr
May 18, 5:51 PM CDT	Tornado Warning Tornado observed	TOP	54 min
May 18, 6:31 PM CDT	Severe Thunderstorm Warning	TOP	44 min
May 18, 6:42 PM CDT	Severe Thunderstorm Warning Considerable damage threat	TOP	48 min
May 18, 6:49 PM CDT	Tornado Warning	TOP	26 min
May 18, 6:54 PM CDT	Severe Thunderstorm Warning Considerable damage threat	TOP	36 min
May 18, 7:07 PM CDT	Areal Flood Advisory	TOP	2 hr
May 18, 7:20 PM CDT	Severe Thunderstorm Warning Considerable damage threat	TOP	40 min
May 18, 7:27 PM CDT	Severe Thunderstorm Warning Considerable damage threat	TOP	33 min
May 22, 5:24 PM CDT	Mesoscale Discussion	SPC	2 hr
May 30, 9:25 PM CDT	Mesoscale Discussion	SPC	2 hr
Jun 4, 3:45 AM CDT	Flood Watch	TOP	24 hr
Jun 4, 1:29 PM CDT	Mesoscale Discussion	SPC	3 hr
Jun 4, 3:56 PM CDT	Special Weather Statement	TOP	34 min
Jun 4, 4:07 PM CDT	Severe Thunderstorm Warning	TOP	38 min
Jun 4, 5:11 PM CDT	Mesoscale Discussion	SPC	94 min
Jun 4, 6:47 PM CDT	Areal Flood Advisory	TOP	3 hr
Jun 4, 9:38 PM CDT	Areal Flood Advisory	TOP	3 hr
Jun 4, 10:04 PM CDT	Areal Flood Advisory	TOP	3 hr
Jun 4, 10:25 PM CDT	Flash Flood Warning	TOP	6 hr
Jun 5, 12:24 AM CDT	Flash Flood Warning	TOP	4 hr
Jun 5, 3:56 AM CDT	Areal Flood Warning	TOP	5 hr
Jun 5, 4:26 AM CDT	Areal Flood Warning	TOP	11 hr
Jun 5, 9:10 AM CDT	Areal Flood Warning	TOP	7 hr
Jun 5, 1:08 PM CDT	Flood Watch	TOP	15 hr
Jun 5, 5:48 PM CDT	Severe Thunderstorm Watch	SPC	8 hr
Jun 8, 2:00 AM CDT	Heat Advisory	TOP	41 hr
Jun 10, 1:35 PM CDT	Mesoscale Discussion	SPC	2 hr
Jun 10, 2:12 PM CDT	Tornado Watch	SPC	9 hr
Jun 10, 5:57 PM CDT	Mesoscale Discussion	SPC	93 min
Jun 10, 7:29 PM CDT	Severe Thunderstorm Warning	TOP	32 min
Jun 10, 8:24 PM CDT	Mesoscale Discussion	SPC	96 min
Jun 13, 1:49 PM CDT	Mesoscale Discussion	SPC	116 min
Jun 13, 2:30 PM CDT	Tornado Watch	SPC	9 hr
Jun 13, 5:34 PM CDT	Severe Thunderstorm Warning Considerable damage threat	TOP	41 min
Jun 13, 5:39 PM CDT	Severe Thunderstorm Warning	TOP	36 min
Jun 13, 5:58 PM CDT	Mesoscale Discussion	SPC	92 min
Jun 13, 6:07 PM CDT	Severe Thunderstorm Warning	TOP	23 min
Jun 13, 6:11 PM CDT	Severe Thunderstorm Warning Considerable damage threat	TOP	49 min
Jun 13, 6:36 PM CDT	Severe Thunderstorm Warning	TOP	39 min
Jun 16, 11:45 AM CDT	Wind Advisory	TOP	27 hr
Jun 19, 2:23 AM CDT	Flood Watch	TOP	55 hr
Jun 20, 6:45 PM CDT	Mesoscale Discussion	SPC	2 hr
Jun 20, 10:19 PM CDT	Areal Flood Advisory	TOP	9 hr
Jun 20, 11:12 PM CDT	Severe Thunderstorm Warning	TOP	33 min
Jun 20, 11:37 PM CDT	Severe Thunderstorm Warning	TOP	38 min
Jun 21, 2:32 AM CDT	Areal Flood Advisory	TOP	3 hr
Jun 27, 1:27 AM CDT	Extreme Heat Watch	TOP	11 hr
Jun 27, 12:48 PM CDT	Extreme Heat Warning	TOP	3 days
Jun 30, 9:20 PM CDT	Heat Advisory	TOP	5 hr
Jul 1, 1:56 AM CDT	Heat Advisory	TOP	3 days
Jul 3, 7:00 PM CDT	Severe Thunderstorm Watch	SPC	4 hr
Jul 3, 9:16 PM CDT	Mesoscale Discussion	SPC	119 min
Jul 8, 10:08 PM CDT	Mesoscale Discussion	SPC	2 hr
Jul 9, 12:38 AM CDT	Severe Thunderstorm Warning	TOP	37 min
Jul 9, 1:46 AM CDT	Areal Flood Advisory	TOP	3 hr
Jul 10, 11:44 AM CDT	Areal Flood Advisory	TOP	3 hr
Jul 19, 12:49 AM CDT	Heat Advisory	TOP	43 hr
Jul 24, 1:51 AM CDT	Extreme Heat Watch	TOP	3 days
Jul 24, 11:33 AM CDT	Heat Advisory	TOP	48 hr
Jul 24, 11:33 AM CDT	Extreme Heat Warning	TOP	3 days
Jul 25, 1:10 PM CDT	Heat Advisory	TOP	13 hr
Jul 29, 8:12 AM CDT	Areal Flood Advisory	TOP	3 hr
Jul 30, 7:55 AM CDT	Areal Flood Advisory	TOP	3 hr
Jul 31, 12:53 AM CDT	Severe Thunderstorm Warning	TOP	37 min
Jul 31, 1:07 AM CDT	Mesoscale Discussion	SPC	53 min
Jul 31, 1:20 AM CDT	Severe Thunderstorm Warning	TOP	40 min
Aug 7, 8:46 AM CDT	Special Weather Statement	TOP	29 min
Aug 8, 4:53 PM CDT	Mesoscale Discussion	SPC	97 min
Aug 9, 12:29 AM CDT	Heat Advisory	TOP	20 hr
Aug 9, 9:07 PM CDT	Mesoscale Discussion	SPC	113 min
Aug 10, 1:34 PM CDT	Heat Advisory	TOP	54 hr
Aug 13, 2:10 AM CDT	Heat Advisory	TOP	18 hr
Aug 14, 11:42 PM CDT	Mesoscale Discussion	SPC	2 hr
Aug 16, 2:13 AM CDT	Mesoscale Discussion	SPC	2 hr
Aug 16, 5:01 AM CDT	Special Weather Statement	TOP	29 min
Aug 19, 2:52 PM CDT	Severe Thunderstorm Watch	SPC	5 hr
Aug 19, 3:43 PM CDT	Severe Thunderstorm Warning	TOP	47 min
Aug 19, 4:16 PM CDT	Severe Thunderstorm Warning	TOP	44 min
Aug 20, 3:48 AM CDT	Dense Fog Advisory	TOP	6 hr
Aug 21, 1:35 PM CDT	Mesoscale Discussion	SPC	115 min
Aug 26, 3:32 AM CDT	Dense Fog Advisory	TOP	5 hr
Sep 1, 11:47 AM CDT	Heat Advisory	TOP	48 hr
Sep 3, 11:34 AM CDT	Extreme Heat Warning	TOP	5 days
Sep 14, 12:47 PM CDT	Flood Watch	TOP	47 hr
Sep 16, 11:14 PM CDT	Dense Fog Advisory	TOP	11 hr
Sep 19, 3:22 PM CDT	Severe Thunderstorm Watch	SPC	8 hr
Sep 19, 6:59 PM CDT	Severe Thunderstorm Warning Considerable damage threat	TOP	31 min
Sep 19, 7:05 PM CDT	Mesoscale Discussion	SPC	85 min
Sep 19, 7:28 PM CDT	Severe Thunderstorm Warning	TOP	32 min
Sep 19, 8:06 PM CDT	Special Weather Statement	TOP	54 min

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	33
Tornado Warning	3
Severe Thunderstorm Watch	9
Tornado Watch	6
Mesoscale Discussion	37
Special Weather Statement	13
Flooding
Areal Flood Warning	4
Flash Flood Warning	3
Flood Watch	6
Areal Flood Advisory	11
Winter
Winter Weather Advisory	3
Heat
Extreme Heat Warning	3
Extreme Heat Watch	2
Heat Advisory	10
Cold
Cold Weather Advisory	1
Frost Advisory	2
Wind and dust
High Wind Warning	1
High Wind Watch	1
Wind Advisory	4
Fire
Red Flag Warning	6
Fire Weather Watch	5
Fog and smoke
Dense Fog Advisory	5

The busiest days

Days with the most alerts issued, by UTC date.

Nearby

Alerts in force now Tornadoes on record Forecast The radar archive 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.