Alert archive / Iowa / Warren County

Weather alerts in Warren County, Iowa, 2022

104 weather alerts in 2022, from the National Weather Service and the Storm Prediction Center. An alert counts here when it covered this county.

Warren County and its neighbors

Each county as a circle sized by its count in 2022. Tap one for its archive.

Alerts
104
Warnings
26
Watches
12
Advisories
34
Busiest month
April17 alerts
Busiest day
March 5, 20228 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 2 tornado warnings covering Warren County in 2022 had a tornado report inside them; 4 of 4 tornado reports fell inside a warning, on average 30 minutes after it went out.

Warren County, 2022

WarningsWith a reportFalse alarm ratioReportsInside a warningMean lead time
Tornado warnings220%4100%30 min
Severe thunderstorm warnings171041%6100%22 min
Flash flood warnings00

Each office's whole area, 2022

WarningsWith a reportFalse alarm ratioReportsInside a warningMean lead time
NWS Des Moines, IA: tornado warnings341459%4293%24 min
NWS Des Moines, IA: severe thunderstorm warnings2048956%23070%22 min
NWS Des Moines, IA: flash flood warnings8450%1191%53 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.

IssuedProductOfficeLasted
Jan 4, 3:03 AM CSTWinter Weather AdvisoryDMX33 hr
Jan 4, 3:08 AM CSTWind AdvisoryDMX33 hr
Jan 5, 3:17 AM CSTWind Chill AdvisoryDMX32 hr
Jan 8, 3:54 AM CSTWinter Weather AdvisoryDMX20 hr
Jan 12, 10:12 AM CSTWinter Storm WatchDMX29 hr
Jan 13, 2:59 PM CSTWinter Storm WarningDMX42 hr
Jan 14, 8:51 AM CSTMesoscale DiscussionSPC3 hr
Jan 19, 3:00 AM CSTWind Chill AdvisoryDMX33 hr
Jan 20, 2:00 PM CSTWind Chill AdvisoryDMX22 hr
Jan 24, 3:22 AM CSTWind Chill AdvisoryDMX42 hr
Feb 20, 2:58 PM CSTWinter Weather AdvisoryDMX51 hr
Feb 23, 4:25 PM CSTWinter Weather AdvisoryDMX32 hr
Mar 5, 3:32 AM CSTWind AdvisoryDMX23 hr
Mar 5, 1:20 PM CSTMesoscale DiscussionSPC2 hr
Mar 5, 2:04 PM CSTTornado WatchSPC6 hr
Mar 5, 3:46 PM CSTMesoscale DiscussionSPC89 min
Mar 5, 4:34 PM CSTTornado WarningDMX41 min
Mar 5, 5:05 PM CSTTornado Warning Tornado observedConsiderable damage threatDMX40 min
Mar 5, 5:33 PM CSTMesoscale DiscussionSPC117 min
Mar 5, 5:53 PM CSTSevere Thunderstorm WarningDMX41 min
Mar 6, 2:46 PM CSTWinter Weather AdvisoryDMX17 hr
Mar 24, 3:28 PM CDTWind AdvisoryDMX28 hr
Apr 12, 9:38 PM CDTMesoscale DiscussionSPC2 hr
Apr 12, 11:19 PM CDTSpecial Weather StatementDMX56 min
Apr 13, 12:11 AM CDTSpecial Weather StatementDMX64 min
Apr 13, 3:04 PM CDTWind AdvisoryDMX28 hr
Apr 14, 3:32 AM CDTRed Flag WarningDMX17 hr
Apr 20, 11:16 PM CDTDense Fog AdvisoryDMX12 hr
Apr 22, 3:43 AM CDTWind AdvisoryDMX39 hr
Apr 23, 2:10 PM CDTMesoscale DiscussionSPC2 hr
Apr 23, 4:01 PM CDTSevere Thunderstorm WatchSPC6 hr
Apr 23, 6:07 PM CDTSevere Thunderstorm Warning Considerable damage threatDMX38 min
Apr 23, 6:31 PM CDTSevere Thunderstorm Warning Considerable damage threatDMX44 min
Apr 23, 7:03 PM CDTMesoscale DiscussionSPC117 min
Apr 23, 7:14 PM CDTSevere Thunderstorm WarningDMX46 min
Apr 23, 7:39 PM CDTSevere Thunderstorm WarningDMX36 min
Apr 23, 7:46 PM CDTSevere Thunderstorm WarningDMX44 min
Apr 25, 2:56 AM CDTFreeze WarningDMX29 hr
Apr 29, 11:34 PM CDTMesoscale DiscussionSPC86 min
May 9, 9:44 PM CDTMesoscale DiscussionSPC91 min
May 13, 12:14 AM CDTSpecial Weather StatementDMX61 min
May 19, 7:04 PM CDTMesoscale DiscussionSPC116 min
May 19, 8:57 PM CDTSevere Thunderstorm WatchSPC6 hr
May 29, 5:54 AM CDTMesoscale DiscussionSPC2 hr
May 30, 3:41 AM CDTWind AdvisoryDMX19 hr
May 30, 5:23 PM CDTTornado WatchSPC5 hr
May 30, 9:39 PM CDTMesoscale DiscussionSPC66 min
May 30, 9:54 PM CDTSevere Thunderstorm WatchSPC6 hr
May 30, 11:43 PM CDTSpecial Weather StatementDMX47 min
Jun 5, 3:45 PM CDTMesoscale DiscussionSPC2 hr
Jun 6, 12:36 PM CDTMesoscale DiscussionSPC114 min
Jun 6, 12:44 PM CDTSpecial Weather StatementDMX31 min
Jun 6, 1:16 PM CDTSpecial Weather StatementDMX29 min
Jun 6, 1:46 PM CDTSevere Thunderstorm WarningDMX44 min
Jun 12, 3:02 PM CDTHeat AdvisoryDMX52 hr
Jun 13, 6:17 AM CDTSevere Thunderstorm WarningDMX25 min
Jun 20, 3:16 PM CDTHeat AdvisoryDMX28 hr
Jun 25, 7:00 AM CDTSevere Thunderstorm WarningDMX45 min
Jun 25, 7:23 AM CDTSevere Thunderstorm WarningDMX52 min
Jul 3, 2:27 PM CDTHeat AdvisoryDMX54 hr
Jul 5, 3:50 PM CDTSevere Thunderstorm WatchSPC6 hr
Jul 5, 6:49 PM CDTMesoscale DiscussionSPC86 min
Jul 5, 7:45 PM CDTSpecial Weather StatementDMX60 min
Jul 5, 8:39 PM CDTSpecial Weather StatementDMX66 min
Jul 6, 2:59 PM CDTFlood WatchDMX18 hr
Jul 11, 4:57 AM CDTSpecial Weather StatementDMX48 min
Jul 22, 3:22 AM CDTHeat AdvisoryDMX41 hr
Jul 22, 10:22 PM CDTMesoscale DiscussionSPC113 min
Aug 1, 3:23 AM CDTHeat AdvisoryDMX41 hr
Aug 5, 2:51 AM CDTHeat AdvisoryDMX42 hr
Aug 7, 8:42 PM CDTSevere Thunderstorm WarningDMX27 min
Aug 19, 2:23 PM CDTSevere Thunderstorm WarningDMX52 min
Aug 19, 2:31 PM CDTMesoscale DiscussionSPC119 min
Aug 19, 3:04 PM CDTSevere Thunderstorm WatchSPC5 hr
Aug 27, 11:46 PM CDTSpecial Weather StatementDMX44 min
Aug 29, 7:06 AM CDTSevere Thunderstorm WarningDMX39 min
Aug 29, 7:35 AM CDTSevere Thunderstorm WarningDMX20 min
Aug 29, 7:39 AM CDTMesoscale DiscussionSPC96 min
Sep 6, 2:32 AM CDTDense Fog AdvisoryDMX6 hr
Sep 17, 6:47 PM CDTSevere Thunderstorm WarningDMX28 min
Sep 17, 6:59 PM CDTMesoscale DiscussionSPC4 hr
Sep 17, 7:12 PM CDTSevere Thunderstorm WarningDMX33 min
Sep 17, 7:16 PM CDTSevere Thunderstorm WatchSPC7 hr
Sep 17, 7:41 PM CDTSevere Thunderstorm WarningDMX49 min
Sep 17, 10:34 PM CDTMesoscale DiscussionSPC116 min
Sep 18, 3:56 PM CDTMesoscale DiscussionSPC2 hr
Sep 18, 6:11 PM CDTTornado WatchSPC6 hr
Sep 18, 8:41 PM CDTMesoscale DiscussionSPC3 hr
Sep 24, 3:10 AM CDTDense Fog AdvisoryDMX7 hr
Sep 27, 2:39 PM CDTFrost AdvisoryDMX17 hr
Oct 7, 2:46 AM CDTFreeze WarningDMX30 hr
Oct 12, 2:49 PM CDTRed Flag WarningDMX28 hr
Oct 23, 3:03 AM CDTWind AdvisoryDMX23 hr
Nov 14, 2:36 PM CSTWinter Weather AdvisoryDMX29 hr
Dec 2, 2:55 AM CSTWind AdvisoryDMX24 hr
Dec 11, 2:17 AM CSTDense Fog AdvisoryDMX8 hr
Dec 11, 10:06 AM CSTDense Fog AdvisoryDMX114 min
Dec 12, 3:19 PM CSTWind AdvisoryDMX30 hr
Dec 19, 3:50 AM CSTWinter Storm WatchDMX35 hr
Dec 20, 3:06 PM CSTWinter Storm WarningDMX72 hr
Dec 23, 3:03 AM CSTWind Chill WarningDMX33 hr
Dec 23, 3:03 AM CSTWinter Weather AdvisoryDMX24 hr
Dec 24, 3:13 AM CSTWind Chill AdvisoryDMX8 hr
Dec 24, 3:18 PM CSTWind Chill AdvisoryDMX19 hr

By product

Every kind of product issued here, grouped by hazard. Each opens the same place narrowed to that product.

The busiest days

Days with the most alerts issued, by UTC date.

Nearby

Alerts in force nowTornadoes on recordForecastThe radar archive20212023

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.