Alert archive / Iowa / Lee County

Weather alerts in Lee County, Iowa, 2026

140 weather alerts in 2026, from the National Weather Service and the Storm Prediction Center. An alert counts here when it covered this county.

Lee County and its neighbors

Each county as a circle sized by its count in 2026. Tap one for its archive.

Alerts
140
Warnings
50
Watches
33
Advisories
22
Busiest month
August32 alerts
Busiest day
June 11, 202610 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 4 tornado warnings covering Lee County in 2026 had a tornado report inside them; 3 of 4 tornado reports fell inside a warning, on average 42 minutes after it went out.

Lee County, 2026

WarningsWith a reportFalse alarm ratioReportsInside a warningMean lead time
Tornado warnings4175%475%42 min
Severe thunderstorm warnings241250%967%17 min
Flash flood warnings6350%540%99 min

Each office's whole area, 2026

WarningsWith a reportFalse alarm ratioReportsInside a warningMean lead time
NWS Quad Cities, IA: tornado warnings932573%4965%22 min
NWS Quad Cities, IA: severe thunderstorm warnings29016842%59980%25 min
NWS Quad Cities, IA: flash flood warnings503334%6189%103 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.

IssuedProductOfficeLasted
Jan 6, 11:58 PM CSTDense Fog AdvisoryDVN12 hr
Jan 17, 1:51 PM CSTCold Weather AdvisoryDVN46 hr
Jan 21, 2:46 AM CSTExtreme Cold WatchDVN31 hr
Jan 21, 2:46 AM CSTWind AdvisoryDVN21 hr
Jan 22, 2:38 AM CSTExtreme Cold WarningDVN33 hr
Jan 22, 10:02 AM CSTCold Weather AdvisoryDVN50 hr
Jan 23, 1:26 PM CSTWinter Weather AdvisoryDVN44 hr
Jan 25, 1:48 AM CSTCold Weather AdvisoryDVN34 hr
Feb 15, 7:30 AM CSTDense Fog AdvisoryDVN3 hr
Feb 17, 2:31 PM CSTFire Weather WatchDVN10 hr
Feb 18, 12:30 AM CSTRed Flag WarningDVN18 hr
Feb 26, 1:46 PM CSTFire Weather WatchDVN12 hr
Feb 27, 1:35 AM CSTRed Flag WarningDVN16 hr
Mar 4, 8:40 PM CSTDense Fog AdvisoryDVN12 hr
Mar 6, 8:18 PM CSTTornado WatchSPC6 hr
Mar 10, 1:53 PM CDTMesoscale DiscussionSPC3 hr
Mar 10, 3:57 PM CDTTornado WatchSPC10 hr
Mar 10, 5:41 PM CDTMesoscale DiscussionSPC2 hr
Mar 10, 7:51 PM CDTMesoscale DiscussionSPC54 min
Mar 10, 8:22 PM CDTMesoscale DiscussionSPC83 min
Mar 10, 8:41 PM CDTTornado WarningDVN64 min
Mar 10, 9:36 PM CDTSevere Thunderstorm WarningDVN30 min
Mar 10, 10:01 PM CDTMesoscale DiscussionSPC89 min
Mar 12, 2:34 AM CDTWind AdvisoryDVN33 hr
Mar 14, 2:00 AM CDTHigh Wind WatchDVN11 hr
Mar 14, 12:33 PM CDTBlizzard WarningDVN48 hr
Mar 14, 12:33 PM CDTHigh Wind WarningDVN41 hr
Mar 15, 1:18 PM CDTWinter Weather AdvisoryDVN24 hr
Mar 16, 1:05 PM CDTWinter Weather AdvisoryDVN11 hr
Mar 26, 4:15 PM CDTSevere Thunderstorm WatchSPC8 hr
Mar 26, 8:40 PM CDTSpecial Weather StatementDVN50 min
Mar 26, 8:56 PM CDTSevere Thunderstorm WarningDVN49 min
Mar 27, 11:59 AM CDTRed Flag WarningDVN33 hr
Apr 2, 2:50 AM CDTWind AdvisoryDVN16 hr
Apr 2, 12:28 PM CDTMesoscale DiscussionSPC3 hr
Apr 2, 1:43 PM CDTTornado WatchSPC8 hr
Apr 2, 3:41 PM CDTMesoscale DiscussionSPC94 min
Apr 3, 1:26 PM CDTMesoscale DiscussionSPC2 hr
Apr 3, 2:20 PM CDTTornado WatchSPC6 hr
Apr 10, 11:38 AM CDTRiver Flood WatchDVN6 days
Apr 11, 11:19 AM CDTRiver Flood WarningDVN20 days
Apr 15, 3:40 PM CDTTornado WatchSPC6 hr
Apr 15, 6:15 PM CDTMesoscale DiscussionSPC2 hr
Apr 15, 8:13 PM CDTTornado WarningDVN47 min
Apr 17, 12:40 PM CDTTornado WatchSPC9 hr
Apr 17, 12:46 PM CDTFlood WatchDVN12 hr
Apr 17, 4:23 PM CDTSevere Thunderstorm WarningDVN54 min
Apr 17, 5:19 PM CDTSevere Thunderstorm WarningDVN41 min
Apr 17, 5:27 PM CDTSevere Thunderstorm Warning Considerable damage threatDVN63 min
Apr 17, 5:47 PM CDTTornado WarningDVN43 min
Apr 17, 5:55 PM CDTSevere Thunderstorm Warning Considerable damage threatDVN50 min
Apr 17, 6:31 PM CDTSevere Thunderstorm Warning Considerable damage threatDVN59 min
Apr 19, 2:10 AM CDTFreeze WarningDVN30 hr
Apr 23, 8:59 PM CDTSevere Thunderstorm WatchSPC3 hr
Apr 27, 9:54 AM CDTFlash Flood WarningDVN104 min
May 4, 6:22 PM CDTSpecial Weather StatementDVN38 min
May 4, 6:34 PM CDTMesoscale DiscussionSPC86 min
May 4, 7:10 PM CDTSpecial Weather StatementDVN65 min
May 4, 7:36 PM CDTSevere Thunderstorm WarningDVN54 min
May 18, 3:15 AM CDTSpecial Weather StatementDVN45 min
May 18, 6:51 AM CDTMesoscale DiscussionSPC84 min
May 18, 9:35 PM CDTSevere Thunderstorm WatchSPC4 hr
May 19, 12:44 AM CDTSpecial Weather StatementDVN46 min
Jun 7, 11:46 AM CDTFlood WatchDVN31 hr
Jun 9, 2:00 AM CDTHeat AdvisoryDVN18 hr
Jun 10, 7:43 AM CDTMesoscale DiscussionSPC2 hr
Jun 10, 10:58 AM CDTFlood WatchDVN32 hr
Jun 10, 11:09 AM CDTMesoscale DiscussionSPC2 hr
Jun 10, 4:01 PM CDTTornado WatchSPC7 hr
Jun 10, 7:30 PM CDTSevere Thunderstorm WarningDVN75 min
Jun 10, 8:19 PM CDTFlash Flood WarningDVN5 hr
Jun 11, 7:31 AM CDTTornado WatchSPC7 hr
Jun 11, 9:21 AM CDTRiver Flood WarningDVN3 days
Jun 11, 9:53 AM CDTMesoscale DiscussionSPC97 min
Jun 11, 11:21 AM CDTSevere Thunderstorm WarningDVN54 min
Jun 11, 1:08 PM CDTMesoscale DiscussionSPC3 hr
Jun 11, 1:57 PM CDTTornado WatchSPC7 hr
Jun 11, 3:07 PM CDTMesoscale DiscussionSPC113 min
Jun 11, 3:09 PM CDTTornado WarningDVN51 min
Jun 16, 1:36 PM CDTFlood WatchDVN29 hr
Jun 17, 3:55 AM CDTSevere Thunderstorm WatchSPC7 hr
Jun 17, 7:57 AM CDTSevere Thunderstorm Warning Considerable damage threatDVN63 min
Jun 17, 8:06 AM CDTSevere Thunderstorm WarningDVN39 min
Jun 17, 8:16 AM CDTMesoscale DiscussionSPC59 min
Jun 17, 8:43 AM CDTSevere Thunderstorm Warning Considerable damage threatDVN62 min
Jun 17, 3:29 PM CDTSevere Thunderstorm WarningDVN61 min
Jun 17, 8:41 PM CDTRiver Flood WarningDVN12 hr
Jun 20, 2:13 AM CDTFlood WatchDVN35 hr
Jun 27, 1:28 AM CDTExtreme Heat WatchDVN24 hr
Jun 27, 1:24 PM CDTExtreme Heat WarningDVN6 days
Jul 3, 9:31 PM CDTSevere Thunderstorm WarningDVN59 min
Jul 10, 2:17 PM CDTMesoscale DiscussionSPC118 min
Jul 17, 12:32 PM CDTHeat AdvisoryDVN30 hr
Jul 19, 11:56 AM CDTHeat AdvisoryDVN32 hr
Jul 20, 11:36 AM CDTMesoscale DiscussionSPC114 min
Jul 20, 3:03 PM CDTTornado WatchSPC7 hr
Jul 20, 8:17 PM CDTSevere Thunderstorm WarningDVN58 min
Jul 24, 1:38 AM CDTExtreme Heat WatchDVN59 hr
Jul 25, 2:49 AM CDTExtreme Heat WarningDVN67 hr
Jul 27, 12:49 PM CDTMesoscale DiscussionSPC116 min
Aug 5, 2:03 AM CDTFlood WatchDVN16 hr
Aug 7, 1:40 PM CDTSevere Thunderstorm WatchSPC8 hr
Aug 7, 8:28 PM CDTSevere Thunderstorm WarningDVN62 min
Aug 7, 8:48 PM CDTMesoscale DiscussionSPC87 min
Aug 7, 9:28 PM CDTSevere Thunderstorm WarningDVN62 min
Aug 7, 10:01 PM CDTSevere Thunderstorm WarningDVN74 min
Aug 9, 1:41 AM CDTHeat AdvisoryDVN18 hr
Aug 9, 8:14 PM CDTMesoscale DiscussionSPC2 hr
Aug 10, 1:57 PM CDTHeat AdvisoryDVN30 hr
Aug 12, 1:18 AM CDTHeat AdvisoryDVN12 hr
Aug 12, 7:27 AM CDTSevere Thunderstorm WarningDVN63 min
Aug 12, 7:54 AM CDTSevere Thunderstorm WarningDVN36 min
Aug 12, 8:20 AM CDTSevere Thunderstorm WarningDVN55 min
Aug 13, 2:22 AM CDTFlood WatchDVN56 hr
Aug 13, 2:35 AM CDTDense Fog AdvisoryDVN6 hr
Aug 13, 5:47 AM CDTSevere Thunderstorm WatchSPC6 hr
Aug 13, 10:28 AM CDTMesoscale DiscussionSPC3 hr
Aug 13, 11:03 PM CDTMesoscale DiscussionSPC117 min
Aug 14, 2:59 PM CDTRiver Flood WatchDVN18 hr
Aug 14, 11:11 PM CDTSevere Thunderstorm WarningDVN64 min
Aug 14, 11:42 PM CDTMesoscale DiscussionSPC2 hr
Aug 15, 12:58 AM CDTFlash Flood WarningDVN6 hr
Aug 15, 3:19 AM CDTFlash Flood WarningDVN5 hr
Aug 15, 8:33 AM CDTAreal Flood WarningDVN6 hr
Aug 15, 9:15 AM CDTRiver Flood WarningDVN57 hr
Aug 15, 4:02 PM CDTMesoscale DiscussionSPC118 min
Aug 15, 5:31 PM CDTSpecial Weather StatementDVN29 min
Aug 15, 5:41 PM CDTSevere Thunderstorm WarningDVN34 min
Aug 19, 4:23 PM CDTSpecial Weather StatementDVN52 min
Aug 19, 4:36 PM CDTFlash Flood WarningDVN2 hr
Aug 19, 5:12 PM CDTSpecial Weather StatementDVN63 min
Aug 30, 1:04 PM CDTHeat AdvisoryDVN6 days
Sep 2, 2:02 AM CDTExtreme Heat WarningDVN4 days
Sep 11, 2:07 AM CDTDense Fog AdvisoryDVN8 hr
Sep 15, 2:35 PM CDTMesoscale DiscussionSPC115 min
Sep 15, 10:28 PM CDTFlash Flood WarningDVN6 hr
Sep 16, 12:32 PM CDTFlood WatchDVN20 hr
Sep 16, 9:26 PM CDTDense Fog AdvisoryDVN12 hr
Sep 19, 10:12 PM CDTRiver Flood WatchDVN6 days
Sep 21, 11:47 AM CDTRiver Flood WarningDVN5 days

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 archive2025

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.