Alert archive / Iowa / Boone County
Weather alerts in Boone County, Iowa, 2021
110 weather alerts in 2021, from the National Weather Service and the Storm Prediction Center. An alert counts here when it covered this county.
Boone County and its neighbors
Each county as a circle sized by its count in 2021. Tap one for its archive.
- Alerts
- 110
- Warnings
- 25
- Watches
- 13
- Advisories
- 37
- Busiest month
- December18 alerts
- Busiest day
- December 15, 20219 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 2, 2:12 PM CST | Dense Fog Advisory | DMX | 22 hr |
| Jan 3, 2:40 PM CST | Dense Fog Advisory | DMX | 21 hr |
| Jan 13, 3:24 PM CST | Wind Advisory | DMX | 33 hr |
| Jan 13, 3:49 PM CST | Winter Weather Advisory | DMX | 50 hr |
| Jan 14, 4:04 AM CST | Blizzard Warning | DMX | 35 hr |
| Jan 19, 2:42 PM CST | Winter Weather Advisory | DMX | 4 hr |
| Jan 24, 3:17 AM CST | Winter Storm Watch | DMX | 12 hr |
| Jan 24, 3:17 AM CST | Winter Storm Warning | DMX | 57 hr |
| Jan 24, 3:24 PM CST | Winter Weather Advisory | DMX | 13 hr |
| Jan 25, 10:41 AM CST | Mesoscale Discussion | SPC | 6 hr |
| Jan 25, 3:26 PM CST | Mesoscale Discussion | SPC | 4 hr |
| Jan 29, 2:56 PM CST | Winter Weather Advisory | DMX | 42 hr |
| Feb 2, 1:36 AM CST | Dense Fog Advisory | DMX | 9 hr |
| Feb 2, 8:51 PM CST | Dense Fog Advisory | DMX | 12 hr |
| Feb 3, 3:35 AM CST | Winter Weather Advisory | DMX | 48 hr |
| Feb 5, 2:42 PM CST | Wind Chill Advisory | DMX | 45 hr |
| Feb 8, 2:22 PM CST | Wind Chill Advisory | DMX | 19 hr |
| Feb 10, 2:44 PM CST | Wind Chill Advisory | DMX | 19 hr |
| Feb 11, 2:56 PM CST | Wind Chill Advisory | DMX | 45 hr |
| Feb 12, 4:04 AM CST | Wind Chill Advisory | DMX | 32 hr |
| Feb 12, 2:59 PM CST | Wind Chill Watch | DMX | 13 hr |
| Feb 13, 3:52 AM CST | Wind Chill Warning | DMX | 3 days |
| Feb 20, 3:32 AM CST | Winter Weather Advisory | DMX | 40 hr |
| Feb 21, 8:52 AM CST | Mesoscale Discussion | SPC | 4 hr |
| Feb 21, 9:16 AM CST | Winter Storm Warning | DMX | 9 hr |
| Mar 10, 3:55 AM CST | Wind Advisory | DMX | 20 hr |
| Mar 10, 1:32 PM CST | Mesoscale Discussion | SPC | 118 min |
| Mar 10, 2:46 PM CST | Tornado Watch | SPC | 5 hr |
| Mar 13, 3:08 AM CST | Winter Storm Watch | DMX | 24 hr |
| Mar 14, 4:02 AM CDT | Winter Weather Advisory | DMX | 36 hr |
| Mar 14, 6:20 PM CDT | Mesoscale Discussion | SPC | 6 hr |
| Mar 15, 1:50 AM CDT | Mesoscale Discussion | SPC | 6 hr |
| Mar 16, 1:06 AM CDT | Dense Fog Advisory | DMX | 8 hr |
| Mar 17, 4:49 AM CDT | Dense Fog Advisory | DMX | 4 hr |
| Mar 21, 2:28 AM CDT | Wind Advisory | DMX | 14 hr |
| Mar 28, 4:22 AM CDT | Fire Weather Watch | DMX | 11 hr |
| Mar 28, 2:52 PM CDT | Red Flag Warning | DMX | 29 hr |
| Mar 28, 3:02 PM CDT | Wind Advisory | DMX | 29 hr |
| Apr 2, 10:50 AM CDT | Red Flag Warning | DMX | 9 hr |
| May 1, 3:57 AM CDT | Red Flag Warning | DMX | 15 hr |
| May 15, 1:16 PM CDT | Mesoscale Discussion | SPC | 119 min |
| May 16, 3:13 AM CDT | Dense Fog Advisory | DMX | 5 hr |
| May 20, 9:05 PM CDT | Mesoscale Discussion | SPC | 115 min |
| May 20, 9:39 PM CDT | Tornado Warning | DMX | 22 min |
| May 25, 7:05 PM CDT | Severe Thunderstorm Warning | DMX | 40 min |
| May 25, 7:40 PM CDT | Mesoscale Discussion | SPC | 95 min |
| Jun 11, 9:35 AM CDT | Mesoscale Discussion | SPC | 115 min |
| Jun 16, 3:34 PM CDT | Heat Advisory | DMX | 28 hr |
| Jun 20, 1:10 PM CDT | Mesoscale Discussion | SPC | 95 min |
| Jun 20, 2:02 PM CDT | Mesoscale Discussion | SPC | 118 min |
| Jun 20, 4:01 PM CDT | Severe Thunderstorm Watch | SPC | 7 hr |
| Jun 22, 3:41 PM CDT | Mesoscale Discussion | SPC | 2 hr |
| Jun 22, 6:09 PM CDT | Severe Thunderstorm Warning | DMX | 51 min |
| Jun 22, 6:51 PM CDT | Mesoscale Discussion | SPC | 54 min |
| Jun 22, 8:51 PM CDT | Special Weather Statement | DMX | 24 min |
| Jun 24, 2:20 AM CDT | Severe Thunderstorm Watch | SPC | 6 hr |
| Jun 24, 4:38 AM CDT | Special Weather Statement | DMX | 52 min |
| Jun 25, 1:00 PM CDT | Mesoscale Discussion | SPC | 2 hr |
| Jul 9, 12:28 PM CDT | Severe Thunderstorm Warning | DMX | 47 min |
| Jul 9, 1:01 PM CDT | Severe Thunderstorm Warning | DMX | 44 min |
| Jul 9, 1:27 PM CDT | Severe Thunderstorm Warning | DMX | 63 min |
| Jul 9, 1:28 PM CDT | Mesoscale Discussion | SPC | 2 hr |
| Jul 14, 7:02 AM CDT | Mesoscale Discussion | SPC | 2 hr |
| Jul 14, 1:40 PM CDT | Mesoscale Discussion | SPC | 2 hr |
| Jul 14, 2:35 PM CDT | Tornado Watch | SPC | 8 hr |
| Jul 14, 4:04 PM CDT | Tornado Warning | DMX | 41 min |
| Jul 14, 4:17 PM CDT | Mesoscale Discussion | SPC | 58 min |
| Jul 14, 5:47 PM CDT | Mesoscale Discussion | SPC | 118 min |
| Jul 26, 3:33 AM CDT | Excessive Heat Watch | DMX | 36 hr |
| Jul 27, 3:04 PM CDT | Heat Advisory | DMX | 52 hr |
| Aug 8, 3:39 PM CDT | Heat Advisory | DMX | 51 hr |
| Aug 8, 11:52 PM CDT | Tornado Warning | DMX | 38 min |
| Aug 8, 11:58 PM CDT | Mesoscale Discussion | SPC | 2 hr |
| Aug 9, 12:29 AM CDT | Severe Thunderstorm Warning | DMX | 46 min |
| Aug 20, 10:42 PM CDT | Special Weather Statement | DMX | 33 min |
| Aug 23, 3:13 PM CDT | Heat Advisory | DMX | 28 hr |
| Aug 24, 1:52 PM CDT | Severe Thunderstorm Watch | SPC | 5 hr |
| Aug 26, 7:37 AM CDT | Mesoscale Discussion | SPC | 83 min |
| Aug 26, 9:18 AM CDT | Special Weather Statement | DMX | 57 min |
| Aug 26, 9:40 AM CDT | Mesoscale Discussion | SPC | 95 min |
| Aug 26, 12:29 PM CDT | Special Weather Statement | DMX | 46 min |
| Aug 30, 11:29 PM CDT | Severe Thunderstorm Warning | DMX | 46 min |
| Sep 13, 9:23 PM CDT | Mesoscale Discussion | SPC | 97 min |
| Sep 20, 12:38 PM CDT | Mesoscale Discussion | SPC | 2 hr |
| Sep 20, 2:07 PM CDT | Severe Thunderstorm Watch | SPC | 7 hr |
| Sep 20, 3:55 PM CDT | Mesoscale Discussion | SPC | 95 min |
| Oct 15, 1:08 PM CDT | Frost Advisory | DMX | 20 hr |
| Oct 21, 2:49 AM CDT | Freeze Warning | DMX | 30 hr |
| Oct 22, 2:39 PM CDT | Freeze Warning | DMX | 18 hr |
| Nov 10, 3:46 PM CST | Mesoscale Discussion | SPC | 119 min |
| Nov 11, 2:52 AM CST | Wind Advisory | DMX | 39 hr |
| Nov 13, 5:47 PM CST | Wind Advisory | DMX | 14 hr |
| Dec 5, 2:43 AM CST | Wind Advisory | DMX | 30 hr |
| Dec 9, 5:14 AM CST | Winter Weather Advisory | DMX | 3 hr |
| Dec 9, 11:44 AM CST | Winter Weather Advisory | DMX | 42 hr |
| Dec 13, 3:40 AM CST | High Wind Watch | DMX | 24 hr |
| Dec 14, 4:09 AM CST | High Wind Warning | DMX | 47 hr |
| Dec 15, 12:28 PM CST | Mesoscale Discussion | SPC | 2 hr |
| Dec 15, 1:23 PM CST | Tornado Watch | SPC | 7 hr |
| Dec 15, 3:55 PM CST | Mesoscale Discussion | SPC | 95 min |
| Dec 15, 5:10 PM CST | Severe Thunderstorm Warning | DMX | 80 min |
| Dec 15, 5:16 PM CST | Mesoscale Discussion | SPC | 119 min |
| Dec 15, 5:18 PM CST | Tornado Warning | DMX | 42 min |
| Dec 15, 5:19 PM CST | Severe Thunderstorm Warning | DMX | 71 min |
| Dec 15, 5:38 PM CST | Tornado Warning | DMX | 37 min |
| Dec 15, 5:52 PM CST | Severe Thunderstorm Warning | DMX | 53 min |
| Dec 15, 11:52 PM CST | Wind Advisory | DMX | 6 hr |
| Dec 24, 4:05 AM CST | Dense Fog Advisory | DMX | 8 hr |
| Dec 30, 9:07 PM CST | Dense Fog Advisory | DMX | 21 hr |
| Dec 31, 11:11 AM CST | Winter Weather Advisory | DMX | 10 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 archive20202022
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.