Alert archive / Iowa / Polk County
Weather alerts in Polk County, Iowa, 2010
258 weather alerts in 2010, from the National Weather Service and the Storm Prediction Center. An alert counts here when it covered this county.
Polk County and its neighbors
Each county as a circle sized by its count in 2010. Tap one for its archive.
- Alerts
- 258
- Warnings
- 104
- Watches
- 56
- Advisories
- 47
- Busiest month
- June78 alerts
- Busiest day
- August 9, 201016 alerts
Over time
By month
Warning verification
How often warnings here had a storm report inside them, and how much warning the reports had.
0 of 1 tornado warnings covering Polk County in 2010 had a tornado report inside them.
Polk County, 2010
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| Tornado warnings | 1 | 0 | 100% | 0 | ||
| Severe thunderstorm warnings | 25 | 17 | 32% | 26 | 85% | 25 min |
| Flash flood warnings | 11 | 9 | 18% | 27 | 70% | 106 min |
Each office's whole area, 2010
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| NWS Des Moines, IA: tornado warnings | 56 | 12 | 79% | 33 | 76% | 14 min |
| NWS Des Moines, IA: severe thunderstorm warnings | 361 | 187 | 48% | 501 | 81% | 24 min |
| NWS Des Moines, IA: flash flood warnings | 100 | 64 | 36% | 180 | 87% | 120 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, 2:24 PM CST | Wind Chill Advisory | DMX | 19 hr |
| Jan 3, 2:55 PM CST | Wind Chill Advisory | DMX | 20 hr |
| Jan 4, 3:41 PM CST | Wind Chill Advisory | DMX | 19 hr |
| Jan 5, 3:59 AM CST | Winter Storm Watch | DMX | 12 hr |
| Jan 5, 3:40 PM CST | Winter Storm Warning | DMX | 53 hr |
| Jan 7, 3:24 PM CST | Wind Chill Warning | DMX | 21 hr |
| Jan 7, 3:24 PM CST | Wind Chill Advisory | DMX | 42 hr |
| Jan 16, 3:14 PM CST | Dense Fog Advisory | DMX | 24 hr |
| Jan 17, 3:16 PM CST | Dense Fog Advisory | DMX | 48 hr |
| Jan 19, 4:15 AM CST | Winter Storm Watch | DMX | 12 hr |
| Jan 19, 3:58 PM CST | Ice Storm Warning | DMX | 23 hr |
| Jan 19, 11:54 PM CST | Mesoscale Discussion | SPC | 5 hr |
| Jan 20, 3:58 AM CST | Mesoscale Discussion | SPC | 4 hr |
| Jan 20, 9:34 AM CST | Areal Flood Advisory | DMX | 3 hr |
| Jan 23, 3:37 PM CST | Dense Fog Advisory | DMX | 11 hr |
| Jan 24, 3:28 PM CST | Wind Advisory | DMX | 33 hr |
| Jan 24, 7:02 PM CST | Winter Weather Advisory | DMX | 39 hr |
| Jan 25, 9:55 AM CST | Blizzard Warning | DMX | 18 hr |
| Jan 25, 5:30 PM CST | Mesoscale Discussion | SPC | 3 hr |
| Feb 6, 3:50 PM CST | Winter Storm Watch | DMX | 24 hr |
| Feb 7, 3:47 PM CST | Winter Weather Advisory | DMX | 48 hr |
| Feb 14, 4:07 AM CST | Winter Weather Advisory | DMX | 32 hr |
| Feb 19, 10:26 AM CST | Winter Weather Advisory | DMX | 12 hr |
| Feb 20, 3:49 AM CST | Winter Storm Watch | DMX | 12 hr |
| Feb 20, 3:33 PM CST | Winter Weather Advisory | DMX | 32 hr |
| Mar 7, 4:03 PM CST | Dense Fog Advisory | DMX | 17 hr |
| Mar 8, 2:58 PM CST | River Flood Warning | DMX | 13 days |
| Mar 8, 2:58 PM CST | River Flood Warning | DMX | 17 days |
| Mar 8, 2:58 PM CST | River Flood Warning | DMX | 17 days |
| Mar 8, 2:58 PM CST | River Flood Warning | DMX | 22 days |
| Mar 8, 2:58 PM CST | River Flood Warning | DMX | 7 days |
| Mar 8, 3:10 PM CST | River Flood Warning | DMX | 8 days |
| Mar 8, 3:10 PM CST | River Flood Warning | DMX | 9 days |
| Mar 8, 6:33 PM CST | Dense Fog Advisory | DMX | 17 hr |
| Mar 9, 1:25 PM CST | Dense Fog Advisory | DMX | 39 hr |
| Mar 9, 4:36 PM CST | Flash Flood Watch | DMX | 109 days |
| Mar 10, 6:58 AM CST | Flash Flood Warning | DMX | 6 hr |
| Mar 19, 3:46 PM CDT | Winter Weather Advisory | DMX | 12 hr |
| Mar 20, 4:02 AM CDT | Winter Weather Advisory | DMX | 6 hr |
| Apr 2, 8:28 AM CDT | Mesoscale Discussion | SPC | 92 min |
| Apr 2, 10:25 AM CDT | Severe Thunderstorm Watch | SPC | 3 hr |
| Apr 2, 11:38 AM CDT | Severe Thunderstorm Warning | DMX | 22 min |
| Apr 2, 11:44 AM CDT | Severe Thunderstorm Warning | DMX | 31 min |
| Apr 5, 1:22 PM CDT | Severe Thunderstorm Warning | DMX | 38 min |
| Apr 5, 1:29 PM CDT | Severe Thunderstorm Watch | SPC | 6 hr |
| Apr 5, 3:44 PM CDT | Flash Flood Watch | DMX | 18 hr |
| Apr 5, 4:04 PM CDT | Mesoscale Discussion | SPC | 56 min |
| Apr 5, 10:39 PM CDT | Severe Thunderstorm Watch | SPC | 6 hr |
| Apr 6, 1:20 AM CDT | Mesoscale Discussion | SPC | 85 min |
| Apr 6, 4:05 AM CDT | Mesoscale Discussion | SPC | 85 min |
| Apr 6, 1:32 PM CDT | Mesoscale Discussion | SPC | 58 min |
| Apr 6, 2:57 PM CDT | Tornado Watch | SPC | 7 hr |
| Apr 6, 6:29 PM CDT | Severe Thunderstorm Warning | DMX | 46 min |
| Apr 24, 9:21 PM CDT | Wind Advisory | DMX | 7 hr |
| Apr 29, 3:57 AM CDT | Wind Advisory | DMX | 13 hr |
| Apr 29, 11:21 PM CDT | Mesoscale Discussion | SPC | 54 min |
| Apr 30, 2:12 AM CDT | Mesoscale Discussion | SPC | 93 min |
| Apr 30, 10:20 AM CDT | Severe Thunderstorm Watch | SPC | 5 hr |
| May 2, 2:15 PM CDT | Mesoscale Discussion | SPC | 90 min |
| May 2, 2:36 PM CDT | Severe Thunderstorm Warning | DMX | 29 min |
| May 7, 10:48 AM CDT | Wind Advisory | DMX | 17 hr |
| May 7, 3:48 PM CDT | Freeze Watch | DMX | 12 hr |
| May 8, 3:54 AM CDT | Frost Advisory | DMX | 29 hr |
| May 10, 3:00 PM CDT | Wind Advisory | DMX | 5 hr |
| May 12, 4:04 AM CDT | Flash Flood Watch | DMX | 26 hr |
| May 12, 6:03 PM CDT | Severe Thunderstorm Warning | DMX | 28 min |
| May 12, 7:34 PM CDT | Areal Flood Advisory | DMX | 3 hr |
| May 12, 10:26 PM CDT | Areal Flood Advisory | DMX | 3 hr |
| Jun 1, 10:21 AM CDT | Mesoscale Discussion | SPC | 54 min |
| Jun 1, 1:36 PM CDT | Mesoscale Discussion | SPC | 54 min |
| Jun 1, 1:53 PM CDT | Tornado Watch | SPC | 9 hr |
| Jun 1, 5:39 PM CDT | Mesoscale Discussion | SPC | 96 min |
| Jun 1, 7:12 PM CDT | Severe Thunderstorm Warning | DMX | 48 min |
| Jun 1, 9:24 PM CDT | Mesoscale Discussion | SPC | 66 min |
| Jun 4, 3:30 PM CDT | Flash Flood Watch | DMX | 29 hr |
| Jun 4, 11:10 PM CDT | Mesoscale Discussion | SPC | 65 min |
| Jun 4, 11:32 PM CDT | Severe Thunderstorm Watch | SPC | 8 hr |
| Jun 5, 2:29 AM CDT | Mesoscale Discussion | SPC | 2 hr |
| Jun 5, 4:00 AM CDT | Severe Thunderstorm Watch | SPC | 5 hr |
| Jun 5, 2:31 PM CDT | Mesoscale Discussion | SPC | 119 min |
| Jun 5, 3:50 PM CDT | Tornado Watch | SPC | 7 hr |
| Jun 6, 3:54 PM CDT | Flash Flood Watch | DMX | 42 hr |
| Jun 10, 6:44 AM CDT | Severe Thunderstorm Watch | SPC | 7 hr |
| Jun 10, 10:02 AM CDT | Mesoscale Discussion | SPC | 88 min |
| Jun 11, 6:11 AM CDT | Severe Thunderstorm Warning | DMX | 49 min |
| Jun 12, 5:16 AM CDT | River Flood Warning | DMX | 13 days |
| Jun 12, 7:18 AM CDT | River Flood Warning | DMX | 13 days |
| Jun 12, 7:38 AM CDT | Flash Flood Warning | DMX | 3 hr |
| Jun 12, 11:04 AM CDT | River Flood Warning | DMX | 72 hr |
| Jun 12, 11:28 AM CDT | River Flood Warning | DMX | 3 days |
| Jun 12, 1:42 PM CDT | River Flood Warning | DMX | 9 hr |
| Jun 13, 3:51 AM CDT | Flash Flood Watch | DMX | 27 hr |
| Jun 13, 12:58 PM CDT | River Flood Warning | DMX | 4 hr |
| Jun 13, 2:40 PM CDT | River Flood Warning | DMX | 37 hr |
| Jun 17, 11:20 AM CDT | River Flood Warning | DMX | 24 days |
| Jun 17, 2:50 PM CDT | Flash Flood Watch | DMX | 13 hr |
| Jun 17, 4:46 PM CDT | Mesoscale Discussion | SPC | 59 min |
| Jun 17, 7:39 PM CDT | Mesoscale Discussion | SPC | 96 min |
| Jun 17, 9:01 PM CDT | Severe Thunderstorm Watch | SPC | 6 hr |
| Jun 17, 10:57 PM CDT | Mesoscale Discussion | SPC | 93 min |
| Jun 18, 7:47 AM CDT | Mesoscale Discussion | SPC | 88 min |
| Jun 18, 9:06 AM CDT | Severe Thunderstorm Watch | SPC | 7 hr |
| Jun 18, 9:22 AM CDT | Severe Thunderstorm Warning | DMX | 53 min |
| Jun 18, 9:45 AM CDT | Severe Thunderstorm Warning | DMX | 45 min |
| Jun 18, 2:49 PM CDT | Tornado Watch | SPC | 7 hr |
| Jun 18, 3:22 PM CDT | Flash Flood Watch | DMX | 9 hr |
| Jun 18, 4:37 PM CDT | Severe Thunderstorm Warning | DMX | 33 min |
| Jun 18, 4:41 PM CDT | Severe Thunderstorm Warning | DMX | 49 min |
| Jun 18, 5:45 PM CDT | Mesoscale Discussion | SPC | 60 min |
| Jun 19, 4:01 AM CDT | Flash Flood Watch | DMX | 54 hr |
| Jun 19, 4:03 AM CDT | Dense Fog Advisory | DMX | 4 hr |
| Jun 19, 11:13 PM CDT | Mesoscale Discussion | SPC | 92 min |
| Jun 21, 9:56 AM CDT | Wind Advisory | DMX | 67 min |
| Jun 22, 1:01 AM CDT | Severe Thunderstorm Watch | SPC | 6 hr |
| Jun 22, 4:03 AM CDT | Mesoscale Discussion | SPC | 57 min |
| Jun 22, 5:42 AM CDT | Severe Thunderstorm Warning | DMX | 48 min |
| Jun 22, 3:40 PM CDT | Flash Flood Watch | DMX | 20 hr |
| Jun 22, 7:08 PM CDT | Mesoscale Discussion | SPC | 2 hr |
| Jun 22, 9:00 PM CDT | Severe Thunderstorm Watch | SPC | 9 hr |
| Jun 22, 9:06 PM CDT | River Flood Warning | DMX | 12 hr |
| Jun 22, 9:06 PM CDT | River Flood Warning | DMX | 12 hr |
| Jun 22, 9:06 PM CDT | River Flood Warning | DMX | 13 hr |
| Jun 22, 9:06 PM CDT | River Flood Warning | DMX | 13 hr |
| Jun 22, 11:47 PM CDT | Mesoscale Discussion | SPC | 88 min |
| Jun 23, 5:46 AM CDT | Mesoscale Discussion | SPC | 59 min |
| Jun 25, 9:06 PM CDT | Severe Thunderstorm Watch | SPC | 8 hr |
| Jun 25, 11:33 PM CDT | Severe Thunderstorm Warning | DMX | 57 min |
| Jun 25, 11:37 PM CDT | Mesoscale Discussion | SPC | 83 min |
| Jun 26, 1:52 AM CDT | Mesoscale Discussion | SPC | 83 min |
| Jun 26, 3:55 AM CDT | Flash Flood Watch | DMX | 28 hr |
| Jun 26, 5:29 AM CDT | Severe Thunderstorm Warning | DMX | 23 min |
| Jun 26, 4:22 PM CDT | River Flood Warning | DMX | 4 hr |
| Jun 26, 7:56 PM CDT | Severe Thunderstorm Watch | SPC | 7 hr |
| Jun 27, 2:06 AM CDT | Mesoscale Discussion | SPC | 84 min |
| Jun 27, 2:52 AM CDT | Severe Thunderstorm Watch | SPC | 5 hr |
| Jun 27, 3:52 AM CDT | Areal Flood Advisory | DMX | 4 hr |
| Jun 27, 4:50 AM CDT | River Flood Warning | DMX | 9 hr |
| Jun 27, 4:53 AM CDT | River Flood Warning | DMX | 17 hr |
| Jun 27, 5:30 AM CDT | River Flood Warning | DMX | 9 hr |
| Jun 27, 6:30 AM CDT | River Flood Warning | DMX | 40 hr |
| Jun 27, 6:32 AM CDT | River Flood Warning | DMX | 62 hr |
| Jun 27, 7:19 AM CDT | River Flood Warning | DMX | 9 days |
| Jun 27, 9:34 AM CDT | River Flood Warning | DMX | 4 days |
| Jun 27, 10:39 AM CDT | River Flood Warning | DMX | 49 hr |
| Jun 27, 10:41 AM CDT | River Flood Warning | DMX | 7 days |
| Jun 27, 11:46 AM CDT | River Flood Warning | DMX | 9 days |
| Jul 3, 3:43 PM CDT | Flash Flood Watch | DMX | 63 hr |
| Jul 5, 9:47 AM CDT | River Flood Warning | DMX | 14 hr |
| Jul 7, 7:06 AM CDT | Flash Flood Warning | DMX | 6 hr |
| Jul 7, 11:11 AM CDT | Flash Flood Watch | DMX | 15 hr |
| Jul 13, 3:21 PM CDT | Heat Advisory | DMX | 29 hr |
| Jul 14, 7:37 PM CDT | Mesoscale Discussion | SPC | 83 min |
| Jul 14, 8:17 PM CDT | Severe Thunderstorm Watch | SPC | 5 hr |
| Jul 14, 10:54 PM CDT | Mesoscale Discussion | SPC | 96 min |
| Jul 16, 3:15 PM CDT | Heat Advisory | DMX | 28 hr |
| Jul 17, 11:59 PM CDT | Mesoscale Discussion | SPC | 91 min |
| Jul 18, 1:07 AM CDT | Severe Thunderstorm Watch | SPC | 5 hr |
| Jul 18, 2:31 AM CDT | Mesoscale Discussion | SPC | 59 min |
| Jul 18, 2:35 AM CDT | Severe Thunderstorm Warning | DMX | 40 min |
| Jul 18, 2:55 AM CDT | Severe Thunderstorm Warning | DMX | 50 min |
| Jul 18, 3:00 AM CDT | Flash Flood Warning | DMX | 4 hr |
| Jul 18, 3:00 AM CDT | Severe Thunderstorm Warning | DMX | 45 min |
| Jul 18, 3:10 AM CDT | Tornado Warning | DMX | 35 min |
| Jul 18, 3:44 AM CDT | Severe Thunderstorm Warning | DMX | 61 min |
| Jul 18, 8:35 AM CDT | River Flood Warning | DMX | 20 days |
| Jul 18, 3:13 PM CDT | River Flood Warning | DMX | 12 days |
| Jul 18, 3:13 PM CDT | River Flood Warning | DMX | 53 hr |
| Jul 19, 10:38 AM CDT | Flash Flood Watch | DMX | 41 hr |
| Jul 19, 7:44 PM CDT | Severe Thunderstorm Watch | SPC | 6 hr |
| Jul 21, 3:51 PM CDT | Flash Flood Watch | DMX | 47 hr |
| Jul 22, 3:50 PM CDT | Severe Thunderstorm Watch | SPC | 6 hr |
| Jul 22, 8:25 PM CDT | Mesoscale Discussion | SPC | 95 min |
| Jul 23, 4:06 AM CDT | Flash Flood Watch | DMX | 27 hr |
| Jul 23, 7:05 PM CDT | Severe Thunderstorm Warning | DMX | 40 min |
| Jul 23, 7:50 PM CDT | Mesoscale Discussion | SPC | 85 min |
| Jul 23, 8:48 PM CDT | River Flood Warning | DMX | 13 hr |
| Jul 23, 8:48 PM CDT | River Flood Warning | DMX | 24 hr |
| Jul 24, 9:23 AM CDT | River Flood Warning | DMX | 7 days |
| Jul 30, 11:52 PM CDT | Dense Fog Advisory | DMX | 9 hr |
| Aug 2, 3:52 AM CDT | Flash Flood Watch | DMX | 24 hr |
| Aug 3, 12:04 AM CDT | Mesoscale Discussion | SPC | 3 hr |
| Aug 3, 1:30 AM CDT | Areal Flood Advisory | DMX | 3 hr |
| Aug 3, 12:44 PM CDT | Heat Advisory | DMX | 6 hr |
| Aug 3, 3:23 PM CDT | River Flood Warning | DMX | 67 hr |
| Aug 3, 3:23 PM CDT | River Flood Warning | DMX | 67 hr |
| Aug 3, 9:26 PM CDT | Flash Flood Watch | DMX | 13 hr |
| Aug 3, 9:47 PM CDT | Mesoscale Discussion | SPC | 58 min |
| Aug 3, 11:19 PM CDT | Severe Thunderstorm Watch | SPC | 6 hr |
| Aug 4, 7:24 AM CDT | Areal Flood Advisory | DMX | 3 hr |
| Aug 4, 7:40 AM CDT | Flash Flood Warning | DMX | 3 hr |
| Aug 4, 8:22 AM CDT | Flash Flood Warning | DMX | 4 hr |
| Aug 4, 9:16 AM CDT | River Flood Warning | DMX | 7 hr |
| Aug 7, 3:40 PM CDT | Excessive Heat Watch | DMX | 12 hr |
| Aug 7, 3:40 PM CDT | Excessive Heat Warning | DMX | 6 days |
| Aug 8, 3:29 AM CDT | Heat Advisory | DMX | 15 hr |
| Aug 8, 2:43 PM CDT | Flash Flood Watch | DMX | 17 hr |
| Aug 8, 7:05 PM CDT | Severe Thunderstorm Watch | SPC | 7 hr |
| Aug 8, 9:48 PM CDT | Severe Thunderstorm Warning | DMX | 57 min |
| Aug 8, 10:14 PM CDT | Mesoscale Discussion | SPC | 3 hr |
| Aug 8, 11:12 PM CDT | Flash Flood Warning | DMX | 6 hr |
| Aug 8, 11:19 PM CDT | Mesoscale Discussion | SPC | 86 min |
| Aug 9, 12:50 AM CDT | River Flood Warning | DMX | 20 hr |
| Aug 9, 12:55 AM CDT | River Flood Warning | DMX | 13 hr |
| Aug 9, 1:58 AM CDT | River Flood Warning | DMX | 19 hr |
| Aug 9, 2:20 AM CDT | Mesoscale Discussion | SPC | 100 min |
| Aug 9, 4:19 AM CDT | River Flood Warning | DMX | 9 days |
| Aug 9, 4:19 AM CDT | River Flood Warning | DMX | 9 days |
| Aug 9, 4:19 AM CDT | River Flood Warning | DMX | 9 days |
| Aug 9, 4:19 AM CDT | River Flood Warning | DMX | 9 days |
| Aug 9, 4:27 AM CDT | River Flood Warning | DMX | 6 days |
| Aug 9, 4:54 AM CDT | Areal Flood Warning | DMX | 12 hr |
| Aug 9, 6:30 AM CDT | River Flood Warning | DMX | 5 days |
| Aug 10, 12:51 AM CDT | Flash Flood Warning | DMX | 6 hr |
| Aug 10, 1:10 AM CDT | Flash Flood Warning | DMX | 6 hr |
| Aug 10, 2:54 AM CDT | River Flood Warning | DMX | 19 hr |
| Aug 10, 3:20 AM CDT | River Flood Warning | DMX | 12 hr |
| Aug 10, 3:20 AM CDT | River Flood Warning | DMX | 12 hr |
| Aug 10, 4:09 AM CDT | Heat Advisory | DMX | 63 hr |
| Aug 10, 6:58 AM CDT | Areal Flood Warning | DMX | 6 hr |
| Aug 10, 3:58 PM CDT | Flash Flood Watch | DMX | 12 hr |
| Aug 10, 9:33 PM CDT | River Flood Warning | DMX | 5 days |
| Aug 10, 10:21 PM CDT | Flash Flood Warning | DMX | 6 hr |
| Aug 10, 10:32 PM CDT | Severe Thunderstorm Warning | DMX | 43 min |
| Aug 10, 11:21 PM CDT | River Flood Warning | DMX | 35 hr |
| Aug 11, 12:29 AM CDT | Severe Thunderstorm Warning | DMX | 46 min |
| Aug 11, 1:05 AM CDT | Severe Thunderstorm Warning | DMX | 40 min |
| Aug 11, 2:48 AM CDT | River Flood Warning | DMX | 9 hr |
| Aug 11, 2:48 AM CDT | River Flood Warning | DMX | 13 hr |
| Aug 11, 4:28 AM CDT | Areal Flood Warning | DMX | 24 hr |
| Aug 12, 3:45 PM CDT | Flash Flood Watch | DMX | 33 hr |
| Aug 13, 9:16 AM CDT | Mesoscale Discussion | SPC | 119 min |
| Aug 13, 10:36 AM CDT | Mesoscale Discussion | SPC | 84 min |
| Aug 21, 9:44 PM CDT | Dense Fog Advisory | DMX | 11 hr |
| Aug 31, 3:26 PM CDT | Mesoscale Discussion | SPC | 34 min |
| Aug 31, 4:57 PM CDT | Severe Thunderstorm Watch | SPC | 7 hr |
| Aug 31, 8:11 PM CDT | Mesoscale Discussion | SPC | 94 min |
| Sep 6, 5:38 PM CDT | Mesoscale Discussion | SPC | 97 min |
| Sep 17, 11:12 PM CDT | Severe Thunderstorm Watch | SPC | 7 hr |
| Sep 18, 8:26 PM CDT | Mesoscale Discussion | SPC | 94 min |
| Sep 18, 9:25 PM CDT | Severe Thunderstorm Watch | SPC | 8 hr |
| Sep 18, 11:18 PM CDT | Severe Thunderstorm Warning | DMX | 42 min |
| Sep 20, 1:44 AM CDT | Dense Fog Advisory | DMX | 7 hr |
| Sep 21, 10:43 AM CDT | Flash Flood Warning | DMX | 3 hr |
| Oct 2, 3:56 AM CDT | Frost Advisory | DMX | 29 hr |
| Oct 24, 3:35 PM CDT | High Wind Watch | DMX | 24 hr |
| Oct 25, 3:49 PM CDT | High Wind Watch | DMX | 36 hr |
| Oct 25, 3:49 PM CDT | High Wind Warning | DMX | 29 hr |
| Oct 25, 3:49 PM CDT | Wind Advisory | DMX | 51 hr |
| Oct 25, 9:36 PM CDT | Mesoscale Discussion | SPC | 24 min |
| Oct 28, 3:51 AM CDT | Freeze Warning | DMX | 29 hr |
| Dec 10, 3:45 PM CST | Blizzard Warning | DMX | 41 hr |
| Dec 10, 3:45 PM CST | Winter Weather Advisory | DMX | 24 hr |
| Dec 12, 2:56 PM CST | Wind Chill Advisory | DMX | 18 hr |
| Dec 23, 3:32 AM CST | Winter Weather Advisory | DMX | 38 hr |
| Dec 26, 10:40 PM CST | Dense Fog Advisory | DMX | 10 hr |
| Dec 29, 11:12 AM CST | Dense Fog Advisory | DMX | 32 hr |
| Dec 30, 3:07 PM CST | Winter Weather Advisory | DMX | 22 hr |
| Dec 31, 9:29 AM CST | Mesoscale Discussion | SPC | 5 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 archive20092011
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.