Alert archive / Iowa / Iowa County
Weather alerts in Iowa 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.
Iowa County and its neighbors
Each county as a circle sized by its count in 2022. Tap one for its archive.
- Alerts
- 104
- Warnings
- 20
- Watches
- 10
- Advisories
- 35
- Busiest month
- July14 alerts
- Busiest day
- March 6, 20226 alerts
Over time
By month
Warning verification
How often warnings here had a storm report inside them, and how much warning the reports had.
Iowa County, 2022
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| Tornado warnings | 0 | 0 | ||||
| Severe thunderstorm warnings | 7 | 4 | 43% | 0 | ||
| Flash flood warnings | 2 | 0 | 100% | 0 |
Each office's whole area, 2022
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| NWS Quad Cities, IA: tornado warnings | 30 | 11 | 63% | 19 | 74% | 16 min |
| NWS Quad Cities, IA: severe thunderstorm warnings | 175 | 91 | 48% | 235 | 78% | 19 min |
| NWS Quad Cities, IA: flash flood warnings | 26 | 13 | 50% | 26 | 77% | 99 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, 3:12 AM CST | Wind Chill Advisory | DVN | 33 hr |
| Jan 1, 2:27 PM CST | Mesoscale Discussion | SPC | 4 hr |
| Jan 4, 3:08 AM CST | Winter Weather Advisory | DVN | 39 hr |
| Jan 5, 3:08 AM CST | Wind Chill Advisory | DVN | 36 hr |
| Jan 6, 2:02 AM CST | Wind Chill Advisory | DVN | 31 hr |
| Jan 7, 2:05 PM CST | Winter Weather Advisory | DVN | 34 hr |
| Jan 12, 2:33 PM CST | Winter Storm Watch | DVN | 24 hr |
| Jan 13, 2:47 PM CST | Winter Storm Warning | DVN | 44 hr |
| Jan 19, 2:13 AM CST | Wind Chill Advisory | DVN | 34 hr |
| Jan 20, 2:12 PM CST | Wind Chill Advisory | DVN | 20 hr |
| Jan 24, 3:07 AM CST | Wind Chill Advisory | DVN | 57 hr |
| Feb 16, 3:30 AM CST | Winter Weather Advisory | DVN | 39 hr |
| Feb 21, 2:48 AM CST | Winter Weather Advisory | DVN | 39 hr |
| Feb 23, 2:55 PM CST | Winter Weather Advisory | DVN | 36 hr |
| Mar 5, 3:27 AM CST | Wind Advisory | DVN | 27 hr |
| Mar 5, 6:31 AM CST | Special Weather Statement | DVN | 59 min |
| Mar 5, 10:43 AM CST | Special Weather Statement | DVN | 47 min |
| Mar 5, 3:46 PM CST | Mesoscale Discussion | SPC | 89 min |
| Mar 5, 5:33 PM CST | Mesoscale Discussion | SPC | 117 min |
| Mar 5, 6:10 PM CST | Tornado Watch | SPC | 4 hr |
| Mar 5, 6:55 PM CST | Severe Thunderstorm Warning | DVN | 35 min |
| Mar 5, 7:34 PM CST | Severe Thunderstorm Warning | DVN | 26 min |
| Mar 5, 7:43 PM CST | Severe Thunderstorm Warning | DVN | 47 min |
| Mar 5, 7:51 PM CST | Mesoscale Discussion | SPC | 114 min |
| Mar 6, 3:05 PM CST | Winter Weather Advisory | DVN | 21 hr |
| Mar 25, 3:10 AM CDT | Wind Advisory | DVN | 19 hr |
| Apr 13, 1:14 AM CDT | Special Weather Statement | DVN | 46 min |
| Apr 13, 2:26 PM CDT | Wind Advisory | DVN | 29 hr |
| Apr 14, 10:35 AM CDT | High Wind Warning | DVN | 8 hr |
| Apr 22, 3:07 AM CDT | Flood Watch | DVN | 12 hr |
| Apr 22, 10:48 AM CDT | Special Weather Statement | DVN | 57 min |
| Apr 22, 11:11 AM CDT | Flash Flood Warning | DVN | 6 hr |
| Apr 22, 12:05 PM CDT | Flash Flood Warning | DVN | 81 min |
| Apr 23, 3:04 AM CDT | Wind Advisory | DVN | 16 hr |
| Apr 25, 3:02 AM CDT | Freeze Warning | DVN | 29 hr |
| Apr 26, 2:39 PM CDT | Frost Advisory | DVN | 17 hr |
| May 9, 6:32 PM CDT | Mesoscale Discussion | SPC | 88 min |
| May 9, 9:44 PM CDT | Mesoscale Discussion | SPC | 91 min |
| May 11, 10:08 AM CDT | Heat Advisory | DVN | 11 hr |
| May 12, 2:48 AM CDT | Heat Advisory | DVN | 17 hr |
| May 31, 1:23 AM CDT | Special Weather Statement | DVN | 67 min |
| May 31, 3:47 AM CDT | Special Weather Statement | DVN | 28 min |
| Jun 12, 2:40 PM CDT | Heat Advisory | DVN | 3 days |
| Jun 13, 7:44 AM CDT | Special Weather Statement | DVN | 31 min |
| Jun 14, 2:58 AM CDT | Excessive Heat Warning | DVN | 41 hr |
| Jun 15, 5:06 PM CDT | Mesoscale Discussion | SPC | 114 min |
| Jun 15, 6:21 PM CDT | Severe Thunderstorm Watch | SPC | 6 hr |
| Jun 20, 2:16 PM CDT | Heat Advisory | DVN | 29 hr |
| Jun 21, 5:26 PM CDT | Mesoscale Discussion | SPC | 94 min |
| Jun 21, 6:46 PM CDT | Severe Thunderstorm Warning | DVN | 44 min |
| Jun 25, 12:26 AM CDT | Special Weather Statement | DVN | 64 min |
| Jun 25, 2:30 AM CDT | Special Weather Statement | DVN | 60 min |
| Jun 25, 2:17 PM CDT | Mesoscale Discussion | SPC | 118 min |
| Jul 4, 3:30 AM CDT | Heat Advisory | DVN | 34 hr |
| Jul 5, 1:09 PM CDT | Excessive Heat Warning | DVN | 7 hr |
| Jul 5, 4:34 PM CDT | Severe Thunderstorm Watch | SPC | 7 hr |
| Jul 5, 6:49 PM CDT | Mesoscale Discussion | SPC | 86 min |
| Jul 5, 8:41 PM CDT | Mesoscale Discussion | SPC | 94 min |
| Jul 5, 9:02 PM CDT | Special Weather Statement | DVN | 58 min |
| Jul 7, 5:38 PM CDT | Special Weather Statement | DVN | 112 min |
| Jul 11, 5:25 AM CDT | Mesoscale Discussion | SPC | 65 min |
| Jul 11, 5:26 AM CDT | Special Weather Statement | DVN | 49 min |
| Jul 11, 5:40 AM CDT | Severe Thunderstorm Watch | SPC | 2 hr |
| Jul 11, 5:43 AM CDT | Severe Thunderstorm Warning | DVN | 62 min |
| Jul 22, 3:26 AM CDT | Heat Advisory | DVN | 41 hr |
| Jul 22, 10:22 PM CDT | Mesoscale Discussion | SPC | 113 min |
| Jul 23, 2:05 AM CDT | Mesoscale Discussion | SPC | 2 hr |
| Aug 1, 12:36 AM CDT | Severe Thunderstorm Warning | DVN | 24 min |
| Aug 2, 2:44 AM CDT | Heat Advisory | DVN | 17 hr |
| Aug 2, 3:59 AM CDT | Severe Thunderstorm Warning | DVN | 31 min |
| Aug 3, 9:45 AM CDT | Special Weather Statement | DVN | 30 min |
| Aug 5, 2:46 AM CDT | Heat Advisory | DVN | 42 hr |
| Aug 6, 12:22 PM CDT | Excessive Heat Warning | DVN | 9 hr |
| Aug 19, 2:31 PM CDT | Mesoscale Discussion | SPC | 119 min |
| Aug 19, 3:04 PM CDT | Severe Thunderstorm Watch | SPC | 5 hr |
| Aug 19, 4:54 PM CDT | Special Weather Statement | DVN | 51 min |
| Aug 20, 4:33 PM CDT | Special Weather Statement | DVN | 117 min |
| Aug 27, 6:09 PM CDT | Special Weather Statement | DVN | 36 min |
| Aug 29, 7:39 AM CDT | Mesoscale Discussion | SPC | 96 min |
| Sep 6, 2:31 AM CDT | Dense Fog Advisory | DVN | 6 hr |
| Sep 17, 6:59 PM CDT | Mesoscale Discussion | SPC | 4 hr |
| Sep 18, 3:56 PM CDT | Mesoscale Discussion | SPC | 2 hr |
| Sep 18, 6:11 PM CDT | Tornado Watch | SPC | 6 hr |
| Sep 18, 8:41 PM CDT | Mesoscale Discussion | SPC | 3 hr |
| Sep 27, 1:53 PM CDT | Frost Advisory | DVN | 18 hr |
| Oct 6, 2:32 PM CDT | Freeze Watch | DVN | 12 hr |
| Oct 7, 2:19 AM CDT | Freeze Warning | DVN | 31 hr |
| Oct 12, 2:56 AM CDT | Special Weather Statement | DVN | 64 min |
| Oct 13, 2:52 AM CDT | Red Flag Warning | DVN | 16 hr |
| Oct 22, 10:31 AM CDT | Red Flag Warning | DVN | 8 hr |
| Nov 4, 11:38 AM CDT | Special Weather Statement | DVN | 37 min |
| Nov 10, 11:47 AM CST | Mesoscale Discussion | SPC | 88 min |
| Nov 10, 2:13 PM CST | Special Weather Statement | DVN | 47 min |
| Nov 14, 2:24 PM CST | Winter Weather Advisory | DVN | 30 hr |
| Dec 2, 2:52 AM CST | Wind Advisory | DVN | 26 hr |
| Dec 7, 3:36 AM CST | Dense Fog Advisory | DVN | 8 hr |
| Dec 9, 9:31 PM CST | Dense Fog Advisory | DVN | 14 hr |
| Dec 12, 2:25 PM CST | Wind Advisory | DVN | 31 hr |
| Dec 19, 2:42 PM CST | Winter Storm Watch | DVN | 37 hr |
| Dec 20, 2:34 PM CST | Winter Storm Warning | DVN | 4 days |
| Dec 21, 11:41 AM CST | Blizzard Warning | DVN | 66 hr |
| Dec 24, 3:10 AM CST | Winter Weather Advisory | DVN | 9 hr |
| Dec 24, 2:01 PM CST | Wind Chill Advisory | DVN | 20 hr |
| Dec 25, 12:16 PM CST | Winter Weather Advisory | DVN | 24 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 | 7 |
| Severe Thunderstorm Watch | 4 |
| Tornado Watch | 2 |
| Mesoscale Discussion | 20 |
| Special Weather Statement | 19 |
| Flooding | |
| Flash Flood Warning | 2 |
| Flood Watch | 1 |
| Winter | |
| Blizzard Warning | 1 |
| Winter Storm Warning | 2 |
| Winter Storm Watch | 2 |
| Winter Weather Advisory | 9 |
| Heat | |
| Excessive Heat Warning | 3 |
| Heat Advisory | 8 |
| Cold | |
| Freeze Warning | 2 |
| Freeze Watch | 1 |
| Frost Advisory | 2 |
| Wind Chill Advisory | 7 |
| Wind and dust | |
| High Wind Warning | 1 |
| Wind Advisory | 6 |
| Fire | |
| Red Flag Warning | 2 |
| Fog and smoke | |
| Dense Fog Advisory | 3 |
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.