Weather alerts in Monona County, Iowa, 2024

178 weather alerts in 2024, from the National Weather Service and the Storm Prediction Center. An alert counts here when it covered this county.

Monona County and its neighbors

Each county as a circle sized by its count in 2024. Tap one for its archive.

Alerts: 178
Warnings: 65
Watches: 30
Advisories: 44
Busiest month: April34 alerts
Busiest day: May 21, 202413 alerts

Over time

By month

Warning verification

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

3 of 8 tornado warnings covering Monona County in 2024 had a tornado report inside them; 3 of 3 tornado reports fell inside a warning, on average 20 minutes after it went out.

Monona County, 2024

	Warnings	With a report	False alarm ratio	Reports	Inside a warning	Mean lead time
Tornado warnings	8	3	63%	3	100%	20 min
Severe thunderstorm warnings	28	14	50%	6	100%	24 min
Flash flood warnings	2	0	100%	0

Each office's whole area, 2024

	Warnings	With a report	False alarm ratio	Reports	Inside a warning	Mean lead time
NWS Omaha, NE: tornado warnings	130	58	55%	152	84%	23 min
NWS Omaha, NE: severe thunderstorm warnings	415	171	59%	586	84%	25 min
NWS Omaha, NE: flash flood warnings	39	18	54%	46	78%	61 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, 3:17 AM CST	Dense Fog Advisory	OAX	9 hr
Jan 5, 3:01 PM CST	Winter Storm Watch	OAX	35 hr
Jan 7, 2:28 AM CST	Winter Storm Warning	OAX	58 hr
Jan 10, 2:43 AM CST	Wind Chill Watch	OAX	25 hr
Jan 10, 2:40 PM CST	Winter Storm Warning	OAX	3 days
Jan 11, 3:22 AM CST	Wind Chill Warning	OAX	5 days
Jan 13, 3:16 PM CST	Winter Weather Advisory	OAX	9 hr
Jan 17, 3:22 AM CST	Wind Chill Watch	OAX	35 hr
Jan 17, 3:22 AM CST	Wind Chill Advisory	OAX	57 hr
Jan 17, 2:26 PM CST	Winter Weather Advisory	OAX	37 hr
Jan 18, 2:10 PM CST	Wind Chill Advisory	OAX	46 hr
Jan 18, 4:27 PM CST	Snow Squall Warning Significant damage threat	OAX	33 min
Jan 18, 4:54 PM CST	Snow Squall Warning Significant damage threat	OAX	66 min
Jan 20, 2:25 AM CST	Wind Chill Advisory	OAX	31 hr
Jan 22, 3:02 PM CST	Dense Fog Advisory	OAX	21 hr
Jan 23, 2:55 PM CST	Dense Fog Advisory	OAX	21 hr
Jan 24, 1:46 PM CST	Dense Fog Advisory	OAX	22 hr
Jan 25, 2:18 PM CST	Dense Fog Advisory	OAX	22 hr
Jan 26, 6:39 PM CST	Dense Fog Advisory	OAX	17 hr
Jan 27, 1:36 PM CST	Dense Fog Advisory	OAX	20 hr
Jan 28, 2:18 PM CST	Dense Fog Advisory	OAX	18 hr
Feb 1, 2:47 AM CST	Dense Fog Advisory	OAX	33 hr
Feb 2, 12:04 PM CST	Dense Fog Advisory	OAX	3 days
Feb 14, 2:14 PM CST	Winter Weather Advisory	OAX	40 hr
Feb 25, 1:47 PM CST	Red Flag Warning	OAX	28 hr
Feb 26, 1:20 PM CST	Wind Advisory	OAX	35 hr
Feb 27, 3:53 PM CST	Mesoscale Discussion	SPC	3 hr
Feb 27, 5:31 PM CST	Special Weather Statement	OAX	29 min
Feb 27, 5:55 PM CST	Special Weather Statement	OAX	35 min
Feb 28, 1:54 PM CST	Red Flag Warning	OAX	30 hr
Mar 2, 4:34 AM CST	Dense Fog Advisory	OAX	5 hr
Mar 3, 1:59 AM CST	Red Flag Warning	OAX	16 hr
Mar 10, 3:04 AM CDT	Fire Weather Watch	OAX	24 hr
Mar 24, 2:57 PM CDT	Winter Weather Advisory	OAX	43 hr
Apr 1, 4:41 AM CDT	Special Weather Statement	OAX	49 min
Apr 1, 5:15 AM CDT	Special Weather Statement	OAX	30 min
Apr 5, 3:52 AM CDT	Fire Weather Watch	OAX	11 hr
Apr 5, 2:27 PM CDT	Red Flag Warning	OAX	31 hr
Apr 5, 2:34 PM CDT	High Wind Warning	OAX	31 hr
Apr 5, 2:34 PM CDT	Wind Advisory	OAX	26 hr
Apr 9, 3:08 PM CDT	Fire Weather Watch	OAX	30 hr
Apr 10, 3:40 PM CDT	Red Flag Warning	OAX	28 hr
Apr 14, 3:06 PM CDT	Fire Weather Watch	OAX	12 hr
Apr 15, 2:40 AM CDT	Red Flag Warning	OAX	16 hr
Apr 16, 11:43 AM CDT	Mesoscale Discussion	SPC	92 min
Apr 16, 12:23 PM CDT	Tornado Watch	SPC	7 hr
Apr 16, 2:03 PM CDT	Mesoscale Discussion	SPC	87 min
Apr 16, 3:36 PM CDT	Mesoscale Discussion	SPC	54 min
Apr 18, 2:40 PM CDT	Freeze Warning	OAX	17 hr
Apr 19, 2:18 PM CDT	Freeze Warning	OAX	18 hr
Apr 20, 2:03 PM CDT	Freeze Warning	OAX	18 hr
Apr 22, 2:18 AM CDT	Wind Advisory	OAX	16 hr
Apr 26, 12:21 PM CDT	Mesoscale Discussion	SPC	54 min
Apr 26, 12:52 PM CDT	Tornado Watch	SPC	6 hr
Apr 26, 2:31 PM CDT	Mesoscale Discussion	SPC	89 min
Apr 26, 4:55 PM CDT	Tornado Warning	OAX	65 min
Apr 26, 5:05 PM CDT	Tornado Warning	OAX	40 min
Apr 26, 5:36 PM CDT	Mesoscale Discussion	SPC	84 min
Apr 26, 5:48 PM CDT	Tornado Warning	OAX	18 min
Apr 27, 3:29 AM CDT	Flood Watch	OAX	18 hr
Apr 30, 1:05 PM CDT	Mesoscale Discussion	SPC	85 min
Apr 30, 1:33 PM CDT	Tornado Watch	SPC	8 hr
Apr 30, 3:03 PM CDT	Severe Thunderstorm Warning	OAX	42 min
Apr 30, 3:25 PM CDT	Severe Thunderstorm Warning Considerable damage threat	OAX	50 min
Apr 30, 3:45 PM CDT	Severe Thunderstorm Warning	OAX	30 min
Apr 30, 3:57 PM CDT	Mesoscale Discussion	SPC	93 min
Apr 30, 4:13 PM CDT	Severe Thunderstorm Warning	OAX	13 min
Apr 30, 6:54 PM CDT	Mesoscale Discussion	SPC	96 min
May 6, 3:49 PM CDT	Tornado Watch	SPC	8 hr
May 8, 2:17 PM CDT	Mesoscale Discussion	SPC	88 min
May 20, 1:45 PM CDT	Flood Watch	OAX	25 hr
May 20, 5:54 PM CDT	Mesoscale Discussion	SPC	2 hr
May 20, 6:31 PM CDT	Severe Thunderstorm Watch	SPC	5 hr
May 20, 10:06 PM CDT	Severe Thunderstorm Warning	OAX	39 min
May 20, 11:33 PM CDT	Severe Thunderstorm Watch	SPC	9 hr
May 21, 2:04 AM CDT	Mesoscale Discussion	SPC	116 min
May 21, 2:38 AM CDT	Flash Flood Warning	OAX	5 hr
May 21, 5:39 AM CDT	Tornado Warning	OAX	36 min
May 21, 5:41 AM CDT	Severe Thunderstorm Warning Destructive damage threat	OAX	49 min
May 21, 5:46 AM CDT	Areal Flood Advisory	OAX	113 min
May 21, 5:49 AM CDT	Severe Thunderstorm Warning Considerable damage threat	OAX	41 min
May 21, 6:11 AM CDT	Severe Thunderstorm Warning Considerable damage threat	OAX	49 min
May 21, 10:27 AM CDT	Mesoscale Discussion	SPC	2 hr
May 21, 11:10 AM CDT	Tornado Watch	SPC	5 hr
May 21, 12:59 PM CDT	Severe Thunderstorm Warning Considerable damage threat	OAX	61 min
May 21, 1:59 PM CDT	Severe Thunderstorm Warning	OAX	12 min
May 23, 3:30 PM CDT	Flood Watch	OAX	12 hr
May 23, 8:43 PM CDT	Severe Thunderstorm Watch	SPC	7 hr
May 23, 10:38 PM CDT	Mesoscale Discussion	SPC	2 hr
May 24, 1:15 AM CDT	Mesoscale Discussion	SPC	2 hr
May 24, 1:20 AM CDT	Severe Thunderstorm Warning	OAX	40 min
May 24, 1:57 AM CDT	Severe Thunderstorm Warning	OAX	48 min
May 24, 2:05 AM CDT	Tornado Warning	OAX	40 min
May 24, 2:11 AM CDT	Tornado Warning	OAX	35 min
May 24, 2:31 AM CDT	Severe Thunderstorm Warning Considerable damage threat	OAX	44 min
May 24, 2:39 AM CDT	Tornado Warning	OAX	31 min
May 26, 12:39 AM CDT	Severe Thunderstorm Warning	OAX	21 min
Jun 12, 2:34 PM CDT	Mesoscale Discussion	SPC	116 min
Jun 12, 6:17 PM CDT	Mesoscale Discussion	SPC	2 hr
Jun 12, 6:36 PM CDT	Severe Thunderstorm Warning	OAX	39 min
Jun 12, 7:07 PM CDT	Severe Thunderstorm Warning Destructive damage threat	OAX	38 min
Jun 12, 7:18 PM CDT	Tornado Warning Tornado observed	OAX	27 min
Jun 12, 7:26 PM CDT	Severe Thunderstorm Watch	SPC	4 hr
Jun 12, 7:32 PM CDT	Severe Thunderstorm Warning Considerable damage threat	OAX	43 min
Jun 12, 8:13 PM CDT	Severe Thunderstorm Warning Considerable damage threat	OAX	47 min
Jun 15, 3:52 PM CDT	Tornado Watch	SPC	6 hr
Jun 15, 5:44 PM CDT	Mesoscale Discussion	SPC	91 min
Jun 15, 7:47 PM CDT	Mesoscale Discussion	SPC	88 min
Jun 15, 7:50 PM CDT	Severe Thunderstorm Warning	OAX	40 min
Jun 15, 8:27 PM CDT	Severe Thunderstorm Warning	OAX	35 min
Jun 18, 12:54 PM CDT	Mesoscale Discussion	SPC	2 hr
Jun 18, 1:47 PM CDT	Severe Thunderstorm Watch	SPC	8 hr
Jun 18, 3:40 PM CDT	Mesoscale Discussion	SPC	95 min
Jun 18, 5:51 PM CDT	Mesoscale Discussion	SPC	84 min
Jun 21, 11:28 AM CDT	River Flood Watch	OAX	26 hr
Jun 21, 8:25 PM CDT	Mesoscale Discussion	SPC	95 min
Jun 21, 10:38 PM CDT	Mesoscale Discussion	SPC	67 min
Jun 22, 1:13 PM CDT	River Flood Warning	OAX	7 days
Jun 22, 10:11 PM CDT	River Flood Watch	OAX	10 hr
Jun 23, 2:38 AM CDT	Heat Advisory	OAX	41 hr
Jun 23, 7:50 AM CDT	River Flood Warning	OAX	6 days
Jun 24, 8:56 AM CDT	Excessive Heat Warning	OAX	11 hr
Jun 25, 4:56 AM CDT	Flash Flood Warning Considerable damage threat	OAX	3 hr
Jun 25, 4:08 PM CDT	Areal Flood Warning	OAX	17 hr
Jun 25, 5:17 PM CDT	Severe Thunderstorm Watch	SPC	7 hr
Jun 25, 8:25 PM CDT	Severe Thunderstorm Warning	OAX	35 min
Jul 1, 12:04 PM CDT	Flood Watch	OAX	17 hr
Jul 12, 1:57 PM CDT	Heat Advisory	OAX	30 hr
Jul 13, 2:56 AM CDT	Heat Advisory	OAX	41 hr
Jul 13, 2:56 AM CDT	Heat Advisory	OAX	65 hr
Jul 21, 3:37 AM CDT	Dense Fog Advisory	OAX	7 hr
Jul 28, 3:49 PM CDT	Mesoscale Discussion	SPC	116 min
Jul 29, 12:39 AM CDT	Mesoscale Discussion	SPC	2 hr
Jul 29, 1:31 AM CDT	Severe Thunderstorm Warning	OAX	44 min
Jul 29, 2:10 AM CDT	Severe Thunderstorm Warning	OAX	12 min
Jul 29, 2:41 AM CDT	Severe Thunderstorm Warning	OAX	14 min
Jul 29, 2:35 PM CDT	Heat Advisory	OAX	29 hr
Jul 29, 7:56 PM CDT	Mesoscale Discussion	SPC	2 hr
Jul 29, 8:47 PM CDT	Severe Thunderstorm Watch	SPC	5 hr
Jul 29, 11:41 PM CDT	Mesoscale Discussion	SPC	2 hr
Jul 29, 11:45 PM CDT	Severe Thunderstorm Warning	OAX	45 min
Jul 30, 11:25 AM CDT	Heat Advisory	OAX	32 hr
Jul 30, 11:17 PM CDT	Mesoscale Discussion	SPC	118 min
Jul 30, 11:54 PM CDT	Severe Thunderstorm Watch	SPC	7 hr
Aug 15, 1:14 PM CDT	Mesoscale Discussion	SPC	2 hr
Aug 23, 1:46 PM CDT	Heat Advisory	OAX	54 hr
Aug 24, 1:29 PM CDT	Excessive Heat Warning	OAX	31 hr
Aug 25, 2:38 AM CDT	Heat Advisory	OAX	41 hr
Aug 26, 2:55 AM CDT	Excessive Heat Warning	OAX	17 hr
Aug 29, 2:35 PM CDT	Mesoscale Discussion	SPC	115 min
Aug 29, 4:12 PM CDT	Special Weather Statement	OAX	48 min
Aug 29, 4:31 PM CDT	Severe Thunderstorm Warning	OAX	29 min
Aug 29, 4:45 PM CDT	Severe Thunderstorm Warning	OAX	45 min
Aug 29, 4:55 PM CDT	Severe Thunderstorm Warning	OAX	35 min
Oct 1, 3:14 PM CDT	Fire Weather Watch	OAX	18 hr
Oct 2, 9:37 AM CDT	Red Flag Warning	OAX	9 hr
Oct 3, 2:17 PM CDT	Fire Weather Watch	OAX	36 hr
Oct 4, 2:13 PM CDT	Red Flag Warning	OAX	30 hr
Oct 13, 2:22 AM CDT	Frost Advisory	OAX	31 hr
Oct 13, 2:27 PM CDT	Freeze Warning	OAX	19 hr
Oct 15, 2:39 PM CDT	Fire Weather Watch	OAX	21 hr
Oct 16, 11:34 AM CDT	Red Flag Warning	OAX	31 hr
Oct 24, 5:22 PM CDT	Mesoscale Discussion	SPC	2 hr
Oct 30, 11:26 AM CDT	Special Weather Statement	OAX	34 min
Nov 5, 11:50 PM CST	Dense Fog Advisory	OAX	10 hr
Nov 19, 1:45 AM CST	Wind Advisory	OAX	40 hr
Nov 20, 2:54 AM CST	Red Flag Warning	OAX	14 hr
Dec 3, 2:13 PM CST	Wind Advisory	OAX	31 hr
Dec 12, 2:35 PM CST	Winter Weather Advisory	OAX	48 hr
Dec 14, 7:21 PM CST	Dense Fog Advisory	OAX	16 hr
Dec 15, 9:47 PM CST	Dense Fog Advisory	OAX	8 hr
Dec 18, 2:37 PM CST	High Wind Warning	OAX	27 hr
Dec 18, 2:37 PM CST	Wind Advisory	OAX	27 hr
Dec 24, 2:11 PM CST	Dense Fog Advisory	OAX	23 hr
Dec 26, 1:07 PM CST	Dense Fog Advisory	OAX	22 hr
Dec 27, 8:30 PM CST	Dense Fog Advisory	OAX	16 hr
Dec 28, 4:54 PM CST	Dense Fog Advisory	OAX	19 hr
Dec 29, 5:59 PM CST	Dense Fog Advisory	OAX	13 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	28
Tornado Warning	8
Severe Thunderstorm Watch	8
Tornado Watch	6
Mesoscale Discussion	33
Special Weather Statement	6
Flooding
Areal Flood Warning	1
Flash Flood Warning	2
River Flood Warning	2
Flood Watch	4
River Flood Watch	2
Areal Flood Advisory	1
Winter
Snow Squall Warning	2
Winter Storm Warning	2
Winter Storm Watch	1
Winter Weather Advisory	5
Heat
Excessive Heat Warning	3
Heat Advisory	8
Cold
Freeze Warning	4
Wind Chill Warning	1
Wind Chill Watch	2
Frost Advisory	1
Wind Chill Advisory	3
Wind and dust
High Wind Warning	2
Wind Advisory	6
Fire
Red Flag Warning	10
Fire Weather Watch	7
Fog and smoke
Dense Fog Advisory	20

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.