Alert archive / Kansas / Leavenworth County

Weather alerts in Leavenworth County, Kansas, 2021

146 weather alerts in 2021, from the National Weather Service and the Storm Prediction Center. An alert counts here when it covered this county.

Leavenworth County and its neighbors

Each county as a circle sized by its count in 2021. Tap one for its archive.

Alerts: 146
Warnings: 45
Watches: 20
Advisories: 35
Busiest month: June32 alerts
Busiest day: June 25, 202117 alerts

Over time

By month

Warning verification

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

Leavenworth County, 2021

	Warnings	With a report	False alarm ratio	Reports	Inside a warning	Mean lead time
Tornado warnings	0			0
Severe thunderstorm warnings	19	14	26%	21	86%	21 min
Flash flood warnings	4	2	50%	3	100%	32 min

Each office's whole area, 2021

	Warnings	With a report	False alarm ratio	Reports	Inside a warning	Mean lead time
NWS Kansas City, MO: tornado warnings	28	11	61%	13	85%	9 min
NWS Kansas City, MO: severe thunderstorm warnings	163	78	52%	221	83%	26 min
NWS Kansas City, MO: flash flood warnings	37	23	38%	49	92%	87 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 1, 2:33 AM CST	Mesoscale Discussion	SPC	5 hr
Jan 2, 3:06 PM CST	Dense Fog Advisory	EAX	21 hr
Jan 3, 2:12 PM CST	Dense Fog Advisory	EAX	24 hr
Jan 13, 3:29 PM CST	Wind Advisory	EAX	29 hr
Jan 14, 3:22 AM CST	Winter Weather Advisory	EAX	39 hr
Jan 19, 12:37 AM CST	Dense Fog Advisory	EAX	8 hr
Jan 26, 2:41 PM CST	Winter Weather Advisory	EAX	21 hr
Feb 5, 1:35 PM CST	Winter Weather Advisory	EAX	29 hr
Feb 6, 9:11 PM CST	Winter Weather Advisory	EAX	50 hr
Feb 11, 11:55 AM CST	Wind Chill Advisory	EAX	24 hr
Feb 12, 3:28 AM CST	Wind Chill Advisory	EAX	33 hr
Feb 13, 3:28 AM CST	Wind Chill Warning	EAX	3 days
Feb 13, 3:28 AM CST	Winter Weather Advisory	EAX	63 hr
Feb 16, 2:41 AM CST	Winter Weather Advisory	EAX	37 hr
Feb 27, 3:15 AM CST	Dense Fog Advisory	EAX	8 hr
Mar 7, 1:54 AM CST	Red Flag Warning	EAX	16 hr
Mar 9, 2:42 PM CST	Wind Advisory	EAX	27 hr
Mar 10, 3:44 PM CST	Mesoscale Discussion	SPC	2 hr
Mar 15, 2:49 PM CDT	Mesoscale Discussion	SPC	116 min
Mar 16, 12:14 AM CDT	Dense Fog Advisory	EAX	9 hr
Mar 17, 2:57 AM CDT	Special Weather Statement	EAX	48 min
Mar 17, 8:11 AM CDT	Special Weather Statement	EAX	49 min
Mar 17, 2:15 PM CDT	Winter Weather Advisory	EAX	14 hr
Mar 26, 1:33 AM CDT	Dense Fog Advisory	EAX	8 hr
Mar 28, 3:36 AM CDT	Fire Weather Watch	EAX	11 hr
Mar 28, 2:24 PM CDT	Wind Advisory	EAX	31 hr
Mar 28, 2:31 PM CDT	Red Flag Warning	EAX	30 hr
Mar 31, 4:13 AM CDT	Freeze Warning	EAX	29 hr
Apr 1, 3:22 AM CDT	Frost Advisory	EAX	30 hr
Apr 10, 3:02 PM CDT	Frost Advisory	EAX	17 hr
Apr 14, 2:48 PM CDT	Frost Advisory	EAX	17 hr
Apr 18, 2:58 PM CDT	Freeze Watch	EAX	24 hr
Apr 18, 2:59 PM CDT	Winter Weather Advisory	EAX	43 hr
Apr 19, 2:44 PM CDT	Freeze Warning	EAX	42 hr
Apr 21, 3:33 AM CDT	Freeze Warning	EAX	29 hr
Apr 26, 8:44 AM CDT	Wind Advisory	EAX	11 hr
Apr 28, 2:30 PM CDT	Special Weather Statement	EAX	45 min
Apr 28, 2:55 PM CDT	Flash Flood Warning	EAX	3 hr
May 8, 9:15 PM CDT	Mesoscale Discussion	SPC	2 hr
May 8, 9:51 PM CDT	Severe Thunderstorm Watch	SPC	7 hr
May 8, 11:19 PM CDT	Severe Thunderstorm Warning	EAX	41 min
May 8, 11:25 PM CDT	Mesoscale Discussion	SPC	2 hr
May 9, 5:09 AM CDT	Special Weather Statement	EAX	51 min
May 16, 3:24 PM CDT	River Flood Warning	EAX	22 hr
May 16, 5:36 PM CDT	Areal Flood Advisory	EAX	6 hr
May 20, 3:48 AM CDT	River Flood Warning	EAX	42 hr
May 20, 2:40 PM CDT	Flash Flood Watch	EAX	6 hr
May 20, 3:18 PM CDT	River Flood Warning	EAX	15 hr
May 21, 1:36 PM CDT	River Flood Warning	EAX	30 hr
May 27, 12:51 AM CDT	Mesoscale Discussion	SPC	84 min
May 27, 1:05 AM CDT	Severe Thunderstorm Watch	SPC	7 hr
May 27, 1:20 AM CDT	River Flood Warning	EAX	7 hr
May 27, 2:50 AM CDT	Special Weather Statement	EAX	40 min
May 27, 5:28 AM CDT	Mesoscale Discussion	SPC	92 min
May 27, 6:28 AM CDT	Special Weather Statement	EAX	32 min
May 27, 1:36 PM CDT	Mesoscale Discussion	SPC	54 min
May 27, 4:51 PM CDT	Areal Flood Advisory	EAX	3 hr
May 27, 5:14 PM CDT	Severe Thunderstorm Warning	EAX	31 min
May 27, 5:40 PM CDT	Severe Thunderstorm Warning	EAX	35 min
May 27, 5:55 PM CDT	Flash Flood Warning	EAX	3 hr
May 27, 6:03 PM CDT	Mesoscale Discussion	SPC	87 min
Jun 11, 12:32 PM CDT	Severe Thunderstorm Watch	SPC	6 hr
Jun 11, 1:55 PM CDT	Mesoscale Discussion	SPC	95 min
Jun 11, 2:12 PM CDT	Severe Thunderstorm Warning	EAX	63 min
Jun 11, 2:52 PM CDT	Severe Thunderstorm Warning	EAX	68 min
Jun 11, 2:52 PM CDT	Mesoscale Discussion	SPC	113 min
Jun 11, 4:02 PM CDT	Areal Flood Advisory	EAX	4 hr
Jun 16, 2:47 PM CDT	Heat Advisory	EAX	53 hr
Jun 20, 2:02 PM CDT	Mesoscale Discussion	SPC	118 min
Jun 20, 4:01 PM CDT	Severe Thunderstorm Watch	SPC	7 hr
Jun 20, 6:56 PM CDT	Mesoscale Discussion	SPC	2 hr
Jun 23, 1:39 PM CDT	Flash Flood Watch	EAX	3 days
Jun 24, 2:45 PM CDT	Mesoscale Discussion	SPC	3 hr
Jun 24, 8:33 PM CDT	Mesoscale Discussion	SPC	87 min
Jun 24, 8:57 PM CDT	Severe Thunderstorm Watch	SPC	6 hr
Jun 24, 9:00 PM CDT	Severe Thunderstorm Warning	EAX	60 min
Jun 24, 9:33 PM CDT	Severe Thunderstorm Warning	EAX	57 min
Jun 24, 10:25 PM CDT	Areal Flood Advisory	EAX	3 hr
Jun 24, 10:43 PM CDT	Severe Thunderstorm Warning	EAX	32 min
Jun 25, 2:03 AM CDT	River Flood Warning	EAX	65 hr
Jun 25, 2:04 AM CDT	River Flood Warning	EAX	27 hr
Jun 25, 3:59 AM CDT	Special Weather Statement	EAX	46 min
Jun 25, 4:21 AM CDT	Severe Thunderstorm Warning	EAX	39 min
Jun 25, 4:46 AM CDT	Areal Flood Advisory	EAX	3 hr
Jun 25, 8:36 AM CDT	River Flood Warning	EAX	54 hr
Jun 25, 8:38 AM CDT	River Flood Warning	EAX	59 hr
Jun 25, 11:56 AM CDT	Mesoscale Discussion	SPC	3 hr
Jun 25, 1:43 PM CDT	Severe Thunderstorm Watch	SPC	9 hr
Jun 25, 3:13 PM CDT	Mesoscale Discussion	SPC	2 hr
Jun 25, 4:14 PM CDT	Severe Thunderstorm Warning	EAX	46 min
Jun 28, 3:09 AM CDT	Flash Flood Watch	EAX	3 days
Jun 30, 8:38 AM CDT	Flash Flood Warning	EAX	4 hr
Jun 30, 12:22 PM CDT	Areal Flood Warning	EAX	18 hr
Jul 1, 3:22 AM CDT	River Flood Warning	EAX	30 hr
Jul 9, 9:12 PM CDT	Mesoscale Discussion	SPC	2 hr
Jul 9, 9:58 PM CDT	Severe Thunderstorm Watch	SPC	7 hr
Jul 10, 1:21 AM CDT	Mesoscale Discussion	SPC	84 min
Jul 10, 1:44 AM CDT	Severe Thunderstorm Warning	EAX	46 min
Jul 10, 2:09 AM CDT	Severe Thunderstorm Warning	EAX	51 min
Jul 10, 2:28 AM CDT	Severe Thunderstorm Warning	EAX	47 min
Jul 10, 2:57 AM CDT	Mesoscale Discussion	SPC	93 min
Jul 10, 2:18 PM CDT	Severe Thunderstorm Watch	SPC	7 hr
Jul 10, 5:27 PM CDT	Mesoscale Discussion	SPC	2 hr
Jul 10, 6:39 PM CDT	Special Weather Statement	EAX	51 min
Jul 10, 7:17 PM CDT	Severe Thunderstorm Warning	EAX	28 min
Jul 10, 7:39 PM CDT	Mesoscale Discussion	SPC	66 min
Jul 21, 2:41 AM CDT	Excessive Heat Watch	EAX	36 hr
Jul 22, 3:08 PM CDT	Excessive Heat Warning	EAX	4 days
Jul 26, 3:37 AM CDT	Heat Advisory	EAX	4 days
Jul 29, 2:55 PM CDT	Excessive Heat Warning	EAX	29 hr
Jul 30, 8:47 PM CDT	Severe Thunderstorm Watch	SPC	5 hr
Aug 7, 9:35 PM CDT	Mesoscale Discussion	SPC	85 min
Aug 8, 2:41 PM CDT	Heat Advisory	EAX	4 days
Aug 10, 2:50 AM CDT	Excessive Heat Warning	EAX	65 hr
Aug 12, 3:28 PM CDT	Severe Thunderstorm Warning	EAX	32 min
Aug 12, 3:30 PM CDT	Mesoscale Discussion	SPC	90 min
Aug 12, 9:36 PM CDT	Severe Thunderstorm Warning	EAX	24 min
Aug 12, 9:55 PM CDT	Severe Thunderstorm Warning	EAX	20 min
Aug 12, 10:20 PM CDT	Mesoscale Discussion	SPC	2 hr
Aug 13, 1:57 AM CDT	Flash Flood Warning	EAX	6 hr
Aug 13, 7:39 AM CDT	Areal Flood Warning	EAX	10 hr
Aug 20, 7:06 PM CDT	Mesoscale Discussion	SPC	84 min
Aug 20, 7:40 PM CDT	Severe Thunderstorm Watch	SPC	5 hr
Aug 20, 9:13 PM CDT	Special Weather Statement	EAX	47 min
Aug 20, 9:37 PM CDT	Mesoscale Discussion	SPC	83 min
Aug 20, 9:41 PM CDT	Special Weather Statement	EAX	49 min
Aug 20, 10:11 PM CDT	Special Weather Statement	EAX	49 min
Aug 20, 10:44 PM CDT	Severe Thunderstorm Warning	EAX	46 min
Aug 22, 2:54 PM CDT	Heat Advisory	EAX	4 days
Aug 31, 7:59 AM CDT	Mesoscale Discussion	SPC	61 min
Aug 31, 8:58 AM CDT	Special Weather Statement	EAX	47 min
Sep 3, 6:24 AM CDT	Areal Flood Advisory	EAX	4 hr
Sep 20, 2:15 PM CDT	Mesoscale Discussion	SPC	2 hr
Sep 20, 3:25 PM CDT	Severe Thunderstorm Watch	SPC	7 hr
Oct 6, 8:42 PM CDT	Dense Fog Advisory	EAX	12 hr
Oct 13, 5:08 AM CDT	Special Weather Statement	EAX	52 min
Oct 29, 3:21 AM CDT	Frost Advisory	EAX	30 hr
Nov 10, 1:55 PM CST	Severe Thunderstorm Watch	SPC	6 hr
Nov 10, 5:29 PM CST	Mesoscale Discussion	SPC	2 hr
Nov 10, 7:01 PM CST	Special Weather Statement	EAX	44 min
Dec 13, 2:57 AM CST	High Wind Watch	EAX	24 hr
Dec 14, 3:05 AM CST	High Wind Warning	EAX	45 hr
Dec 15, 2:29 PM CST	Mesoscale Discussion	SPC	2 hr
Dec 15, 3:18 PM CST	Severe Thunderstorm Watch	SPC	5 hr
Dec 15, 5:01 PM CST	Mesoscale Discussion	SPC	89 min
Dec 15, 5:18 PM CST	Severe Thunderstorm Warning Considerable damage threat	EAX	57 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	19
Severe Thunderstorm Watch	13
Mesoscale Discussion	32
Special Weather Statement	14
Flooding
Areal Flood Warning	2
Flash Flood Warning	4
River Flood Warning	10
Flash Flood Watch	3
Areal Flood Advisory	6
Winter
Winter Weather Advisory	8
Heat
Excessive Heat Warning	3
Excessive Heat Watch	1
Heat Advisory	4
Cold
Freeze Warning	3
Wind Chill Warning	1
Freeze Watch	1
Frost Advisory	4
Wind Chill Advisory	2
Wind and dust
High Wind Warning	1
High Wind Watch	1
Wind Advisory	4
Fire
Red Flag Warning	2
Fire Weather Watch	1
Fog and smoke
Dense Fog Advisory	7

The busiest days

Days with the most alerts issued, by UTC date.

Nearby

Alerts in force now Tornadoes on record Forecast The radar archive 2020 2022

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.