Alert archive / Iowa / Polk County
Weather alerts in Polk County, Iowa, 2011
132 weather alerts in 2011, 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 2011. Tap one for its archive.
- Alerts
- 132
- Warnings
- 49
- Watches
- 24
- Advisories
- 28
- Busiest month
- June59 alerts
- Busiest day
- June 10, 201115 alerts
Over time
By month
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 8, 3:13 PM CST | Winter Storm Watch | DMX | 24 hr |
| Jan 9, 3:20 PM CST | Winter Weather Advisory | DMX | 51 hr |
| Jan 16, 3:38 PM CST | Winter Weather Advisory | DMX | 26 hr |
| Jan 17, 2:50 AM CST | Mesoscale Discussion | SPC | 4 hr |
| Jan 30, 4:01 AM CST | Winter Storm Watch | DMX | 36 hr |
| Jan 30, 4:01 AM CST | Winter Weather Advisory | DMX | 68 hr |
| Jan 31, 4:20 PM CST | Blizzard Warning | DMX | 42 hr |
| Feb 1, 3:36 PM CST | Mesoscale Discussion | SPC | 6 hr |
| Feb 2, 3:48 AM CST | Winter Weather Advisory | DMX | 8 hr |
| Feb 2, 3:09 PM CST | Wind Chill Advisory | DMX | 18 hr |
| Feb 7, 3:35 AM CST | Wind Chill Advisory | DMX | 32 hr |
| Feb 8, 3:44 PM CST | Wind Chill Advisory | DMX | 20 hr |
| Feb 16, 12:59 AM CST | Dense Fog Advisory | DMX | 9 hr |
| Feb 16, 6:00 PM CST | Dense Fog Advisory | DMX | 16 hr |
| Feb 17, 1:47 PM CST | Flash Flood Warning | DMX | 4 hr |
| Feb 24, 3:47 AM CST | Winter Weather Advisory | DMX | 20 hr |
| Mar 8, 4:15 AM CST | Winter Storm Watch | DMX | 11 hr |
| Mar 8, 3:39 PM CST | Winter Weather Advisory | DMX | 18 hr |
| Mar 20, 2:51 PM CDT | Mesoscale Discussion | SPC | 114 min |
| Mar 21, 12:22 PM CDT | Severe Thunderstorm Warning | DMX | 38 min |
| Mar 22, 2:03 PM CDT | Tornado Watch | SPC | 7 hr |
| Mar 22, 6:16 PM CDT | Severe Thunderstorm Warning | DMX | 44 min |
| Mar 22, 6:26 PM CDT | Tornado Warning | DMX | 49 min |
| Mar 22, 7:01 PM CDT | Severe Thunderstorm Warning | DMX | 44 min |
| Mar 22, 7:14 PM CDT | Severe Thunderstorm Warning | DMX | 31 min |
| Apr 3, 3:47 PM CDT | Wind Advisory | DMX | 26 hr |
| Apr 10, 3:54 AM CDT | Wind Advisory | DMX | 15 hr |
| May 2, 3:48 PM CDT | Frost Advisory | DMX | 15 hr |
| May 3, 4:05 PM CDT | Frost Advisory | DMX | 15 hr |
| May 11, 8:09 AM CDT | Mesoscale Discussion | SPC | 66 min |
| May 11, 2:53 PM CDT | Tornado Watch | SPC | 6 hr |
| May 11, 6:37 PM CDT | Severe Thunderstorm Warning | DMX | 53 min |
| May 12, 6:05 PM CDT | Severe Thunderstorm Watch | SPC | 7 hr |
| May 12, 10:27 PM CDT | Mesoscale Discussion | SPC | 63 min |
| May 21, 2:25 PM CDT | Severe Thunderstorm Watch | SPC | 10 hr |
| May 21, 8:55 PM CDT | Mesoscale Discussion | SPC | 65 min |
| May 24, 3:26 PM CDT | Severe Thunderstorm Warning | DMX | 34 min |
| May 25, 4:22 AM CDT | Wind Advisory | DMX | 17 hr |
| May 29, 6:34 AM CDT | Severe Thunderstorm Warning | DMX | 26 min |
| Jun 8, 3:36 PM CDT | Mesoscale Discussion | SPC | 84 min |
| Jun 8, 5:18 PM CDT | Severe Thunderstorm Watch | SPC | 7 hr |
| Jun 8, 5:50 PM CDT | Severe Thunderstorm Warning | DMX | 40 min |
| Jun 8, 6:37 PM CDT | Severe Thunderstorm Warning | DMX | 38 min |
| Jun 9, 1:44 AM CDT | Mesoscale Discussion | SPC | 2 hr |
| Jun 9, 7:27 AM CDT | Severe Thunderstorm Warning | DMX | 33 min |
| Jun 9, 8:53 AM CDT | Severe Thunderstorm Warning | DMX | 52 min |
| Jun 9, 9:39 AM CDT | Severe Thunderstorm Warning | DMX | 19 min |
| Jun 9, 9:50 AM CDT | Mesoscale Discussion | SPC | 55 min |
| Jun 9, 3:44 PM CDT | Flash Flood Watch | DMX | 12 hr |
| Jun 9, 8:13 PM CDT | Severe Thunderstorm Warning | DMX | 47 min |
| Jun 9, 8:37 PM CDT | Flash Flood Warning | DMX | 6 hr |
| Jun 9, 8:55 PM CDT | Severe Thunderstorm Warning | DMX | 50 min |
| Jun 9, 9:11 PM CDT | Severe Thunderstorm Warning | DMX | 34 min |
| Jun 9, 9:26 PM CDT | Severe Thunderstorm Warning | DMX | 22 min |
| Jun 9, 9:30 PM CDT | Flash Flood Warning | DMX | 4 hr |
| Jun 9, 9:48 PM CDT | Severe Thunderstorm Watch | SPC | 6 hr |
| Jun 9, 10:04 PM CDT | Severe Thunderstorm Warning | DMX | 41 min |
| Jun 9, 10:34 PM CDT | Severe Thunderstorm Warning | DMX | 26 min |
| Jun 9, 10:45 PM CDT | Severe Thunderstorm Warning | DMX | 31 min |
| Jun 9, 11:45 PM CDT | Mesoscale Discussion | SPC | 90 min |
| Jun 10, 12:07 AM CDT | River Flood Warning | DMX | 6 hr |
| Jun 10, 1:39 AM CDT | Mesoscale Discussion | SPC | 2 hr |
| Jun 10, 7:20 AM CDT | River Flood Warning | DMX | 20 hr |
| Jun 10, 7:20 AM CDT | River Flood Warning | DMX | 20 hr |
| Jun 13, 11:27 AM CDT | Severe Thunderstorm Warning | DMX | 33 min |
| Jun 13, 11:48 AM CDT | Wind Advisory | DMX | 6 hr |
| Jun 13, 3:32 PM CDT | Flash Flood Watch | DMX | 36 hr |
| Jun 13, 9:23 PM CDT | Mesoscale Discussion | SPC | 97 min |
| Jun 13, 11:57 PM CDT | Mesoscale Discussion | SPC | 93 min |
| Jun 14, 12:57 AM CDT | Severe Thunderstorm Warning | DMX | 35 min |
| Jun 14, 1:54 AM CDT | Severe Thunderstorm Warning | DMX | 51 min |
| Jun 14, 10:02 AM CDT | River Flood Warning | DMX | 13 hr |
| Jun 14, 10:02 AM CDT | River Flood Warning | DMX | 13 hr |
| Jun 19, 6:51 PM CDT | Tornado Watch | SPC | 7 hr |
| Jun 19, 9:16 PM CDT | Mesoscale Discussion | SPC | 59 min |
| Jun 19, 11:14 PM CDT | Flash Flood Watch | DMX | 11 hr |
| Jun 20, 12:50 AM CDT | Severe Thunderstorm Warning | DMX | 40 min |
| Jun 20, 1:40 AM CDT | Mesoscale Discussion | SPC | 35 min |
| Jun 20, 3:27 AM CDT | Mesoscale Discussion | SPC | 33 min |
| Jun 20, 3:46 AM CDT | Severe Thunderstorm Watch | SPC | 5 hr |
| Jun 20, 7:09 AM CDT | River Flood Warning | DMX | 118 min |
| Jun 20, 7:29 AM CDT | Mesoscale Discussion | SPC | 61 min |
| Jun 20, 9:46 AM CDT | River Flood Warning | DMX | 47 hr |
| Jun 20, 10:43 AM CDT | River Flood Warning | DMX | 47 hr |
| Jun 20, 10:43 AM CDT | River Flood Warning | DMX | 47 hr |
| Jun 20, 3:14 PM CDT | Flash Flood Watch | DMX | 12 hr |
| Jun 20, 5:55 PM CDT | Mesoscale Discussion | SPC | 65 min |
| Jun 20, 6:53 PM CDT | Tornado Watch | SPC | 6 hr |
| Jun 20, 10:22 PM CDT | Mesoscale Discussion | SPC | 83 min |
| Jun 20, 11:34 PM CDT | Severe Thunderstorm Warning | DMX | 26 min |
| Jun 20, 11:49 PM CDT | Severe Thunderstorm Warning | DMX | 41 min |
| Jun 20, 11:52 PM CDT | Tornado Warning | DMX | 23 min |
| Jun 26, 3:42 PM CDT | Flash Flood Watch | DMX | 14 hr |
| Jun 26, 4:56 PM CDT | Severe Thunderstorm Watch | SPC | 7 hr |
| Jun 26, 8:48 PM CDT | Mesoscale Discussion | SPC | 117 min |
| Jun 26, 9:34 PM CDT | Severe Thunderstorm Warning | DMX | 41 min |
| Jun 29, 3:44 AM CDT | Excessive Heat Watch | DMX | 12 hr |
| Jun 29, 3:38 PM CDT | Heat Advisory | DMX | 51 hr |
| Jul 5, 6:10 PM CDT | Tornado Watch | SPC | 4 hr |
| Jul 5, 7:49 PM CDT | Mesoscale Discussion | SPC | 56 min |
| Jul 10, 2:06 PM CDT | Heat Advisory | DMX | 29 hr |
| Jul 11, 1:08 AM CDT | Severe Thunderstorm Watch | SPC | 13 min |
| Jul 11, 1:21 AM CDT | Severe Thunderstorm Watch | SPC | 4 hr |
| Jul 11, 2:36 AM CDT | Mesoscale Discussion | SPC | 114 min |
| Jul 11, 2:41 AM CDT | Severe Thunderstorm Warning | DMX | 49 min |
| Jul 11, 3:34 AM CDT | Severe Thunderstorm Warning | DMX | 41 min |
| Jul 14, 3:37 PM CDT | Excessive Heat Watch | DMX | 24 hr |
| Jul 15, 2:21 PM CDT | Mesoscale Discussion | SPC | 114 min |
| Jul 15, 3:32 PM CDT | Excessive Heat Warning | DMX | 6 days |
| Jul 21, 3:45 PM CDT | Mesoscale Discussion | SPC | 90 min |
| Jul 22, 3:40 AM CDT | Excessive Heat Warning | DMX | 41 hr |
| Jul 22, 3:00 PM CDT | Mesoscale Discussion | SPC | 90 min |
| Jul 23, 4:57 PM CDT | Mesoscale Discussion | SPC | 93 min |
| Jul 26, 11:30 AM CDT | Heat Advisory | DMX | 35 hr |
| Jul 28, 10:56 AM CDT | Heat Advisory | DMX | 11 hr |
| Jul 30, 3:47 PM CDT | Heat Advisory | DMX | 72 hr |
| Aug 2, 3:53 AM CDT | Excessive Heat Warning | DMX | 15 hr |
| Aug 6, 8:10 PM CDT | Mesoscale Discussion | SPC | 2 hr |
| Aug 6, 11:09 PM CDT | Severe Thunderstorm Warning | DMX | 51 min |
| Aug 23, 12:45 AM CDT | Mesoscale Discussion | SPC | 2 hr |
| Sep 2, 2:41 PM CDT | Mesoscale Discussion | SPC | 94 min |
| Sep 2, 10:04 PM CDT | Mesoscale Discussion | SPC | 86 min |
| Sep 2, 10:23 PM CDT | Severe Thunderstorm Watch | SPC | 6 hr |
| Sep 2, 11:25 PM CDT | Severe Thunderstorm Warning | DMX | 34 min |
| Sep 2, 11:56 PM CDT | Mesoscale Discussion | SPC | 94 min |
| Sep 14, 3:52 AM CDT | Frost Advisory | DMX | 28 hr |
| Sep 28, 3:50 PM CDT | Wind Advisory | DMX | 27 hr |
| Oct 11, 3:06 AM CDT | Dense Fog Advisory | DMX | 7 hr |
| Oct 11, 10:11 AM CDT | Dense Fog Advisory | DMX | 65 min |
| Oct 20, 3:42 AM CDT | Freeze Warning | DMX | 29 hr |
| Nov 8, 3:42 AM CST | Winter Weather Advisory | DMX | 29 hr |
| Nov 25, 3:31 PM CST | Wind Advisory | DMX | 29 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 | 30 |
| Tornado Warning | 2 |
| Severe Thunderstorm Watch | 9 |
| Tornado Watch | 5 |
| Mesoscale Discussion | 31 |
| Flooding | |
| Flash Flood Warning | 3 |
| River Flood Warning | 9 |
| Flash Flood Watch | 5 |
| Winter | |
| Blizzard Warning | 1 |
| Winter Storm Watch | 3 |
| Winter Weather Advisory | 7 |
| Heat | |
| Excessive Heat Warning | 3 |
| Excessive Heat Watch | 2 |
| Heat Advisory | 5 |
| Cold | |
| Freeze Warning | 1 |
| Frost Advisory | 3 |
| Wind Chill Advisory | 3 |
| Wind and dust | |
| Wind Advisory | 6 |
| Fog and smoke | |
| Dense Fog Advisory | 4 |
The busiest days
Days with the most alerts issued, by UTC date.
Nearby
Alerts in force nowTornadoes on recordForecastThe radar archive20102012
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. Rebuilt daily.