Alert archive / Illinois / Mason County
Weather alerts in Mason County, Illinois, 2020
104 weather alerts in 2020, from the National Weather Service and the Storm Prediction Center. An alert counts here when it covered this county.
Mason County and its neighbors
Each county as a circle sized by its count in 2020. Tap one for its archive.
- Alerts
- 104
- Warnings
- 30
- Watches
- 17
- Advisories
- 33
- Busiest month
- April19 alerts
- Busiest day
- April 28, 20205 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, 2:58 PM CST | Flood Watch | ILX | 69 hr |
| Jan 9, 4:18 AM CST | Wind Advisory | ILX | 14 hr |
| Jan 10, 2:55 AM CST | Winter Weather Advisory | ILX | 44 hr |
| Jan 10, 11:28 AM CST | River Flood Warning | ILX | 57 days |
| Jan 11, 9:49 AM CST | River Flood Warning | ILX | 21 days |
| Jan 11, 9:49 AM CST | River Flood Warning | ILX | 11 days |
| Jan 11, 3:10 PM CST | Mesoscale Discussion | SPC | 4 hr |
| Jan 14, 7:53 PM CST | Dense Fog Advisory | ILX | 13 hr |
| Jan 16, 3:10 PM CST | Winter Weather Advisory | ILX | 39 hr |
| Jan 17, 4:07 PM CST | Mesoscale Discussion | SPC | 5 hr |
| Jan 18, 2:38 PM CST | Wind Chill Advisory | ILX | 21 hr |
| Jan 23, 9:43 PM CST | Winter Weather Advisory | ILX | 8 hr |
| Jan 24, 6:21 AM CST | Dense Fog Advisory | ILX | 9 hr |
| Feb 4, 3:28 PM CST | Winter Weather Advisory | ILX | 45 hr |
| Feb 11, 2:40 PM CST | Winter Weather Advisory | ILX | 43 hr |
| Feb 13, 2:11 PM CST | Wind Chill Advisory | ILX | 19 hr |
| Feb 17, 5:44 PM CST | Dense Fog Advisory | ILX | 8 hr |
| Feb 25, 3:06 AM CST | Winter Weather Advisory | ILX | 35 hr |
| Mar 5, 5:59 PM CST | Wind Advisory | ILX | 15 hr |
| Mar 12, 6:39 AM CDT | Dense Fog Advisory | ILX | 5 hr |
| Mar 14, 10:44 AM CDT | River Flood Warning | ILX | 33 days |
| Mar 20, 10:46 AM CDT | River Flood Warning | ILX | 24 hr |
| Mar 25, 1:51 AM CDT | Dense Fog Advisory | ILX | 9 hr |
| Mar 28, 10:18 AM CDT | Mesoscale Discussion | SPC | 2 hr |
| Mar 28, 2:45 PM CDT | Tornado Watch | SPC | 6 hr |
| Mar 28, 3:21 PM CDT | Wind Advisory | ILX | 28 hr |
| Mar 28, 8:06 PM CDT | Mesoscale Discussion | SPC | 54 min |
| Mar 28, 8:41 PM CDT | Tornado Watch | SPC | 3 hr |
| Apr 8, 1:46 PM CDT | Mesoscale Discussion | SPC | 119 min |
| Apr 8, 3:08 PM CDT | Severe Thunderstorm Watch | SPC | 6 hr |
| Apr 8, 4:34 PM CDT | Severe Thunderstorm Warning | ILX | 41 min |
| Apr 8, 4:40 PM CDT | Severe Thunderstorm Warning | ILX | 50 min |
| Apr 9, 3:28 AM CDT | Wind Advisory | ILX | 16 hr |
| Apr 12, 3:39 AM CDT | Wind Advisory | ILX | 35 hr |
| Apr 13, 3:03 PM CDT | Freeze Warning | ILX | 18 hr |
| Apr 17, 12:41 PM CDT | Freeze Warning | ILX | 20 hr |
| Apr 24, 2:13 AM CDT | Dense Fog Advisory | ILX | 7 hr |
| Apr 25, 1:52 AM CDT | Flood Watch | ILX | 23 hr |
| Apr 25, 8:57 AM CDT | River Flood Warning | ILX | 13 days |
| Apr 25, 9:09 AM CDT | River Flood Warning | ILX | 55 days |
| Apr 26, 8:57 AM CDT | River Flood Warning | ILX | 9 days |
| Apr 27, 2:01 PM CDT | River Flood Warning | ILX | 11 hr |
| Apr 28, 3:33 PM CDT | Mesoscale Discussion | SPC | 87 min |
| Apr 28, 3:51 PM CDT | Severe Thunderstorm Watch | SPC | 7 hr |
| Apr 28, 5:15 PM CDT | Severe Thunderstorm Warning | ILX | 60 min |
| Apr 28, 6:02 PM CDT | Severe Thunderstorm Warning | ILX | 43 min |
| Apr 28, 6:32 PM CDT | Mesoscale Discussion | SPC | 118 min |
| May 2, 8:27 PM CDT | Mesoscale Discussion | SPC | 2 hr |
| May 7, 3:12 AM CDT | Freeze Watch | ILX | 24 hr |
| May 8, 3:01 AM CDT | Freeze Warning | ILX | 29 hr |
| May 10, 3:12 PM CDT | Frost Advisory | ILX | 12 hr |
| May 14, 11:55 AM CDT | Flash Flood Watch | ILX | 16 hr |
| May 14, 5:19 PM CDT | Mesoscale Discussion | SPC | 116 min |
| May 14, 6:15 PM CDT | Severe Thunderstorm Watch | SPC | 8 hr |
| May 15, 1:06 AM CDT | Mesoscale Discussion | SPC | 114 min |
| May 16, 9:06 PM CDT | Flash Flood Watch | ILX | 34 hr |
| May 17, 11:37 AM CDT | River Flood Warning | ILX | 5 days |
| May 17, 11:37 AM CDT | River Flood Warning | ILX | 8 days |
| May 23, 11:29 AM CDT | Mesoscale Discussion | SPC | 2 hr |
| May 23, 12:33 PM CDT | Tornado Watch | SPC | 8 hr |
| May 23, 2:51 PM CDT | Mesoscale Discussion | SPC | 84 min |
| Jun 3, 9:52 AM CDT | Mesoscale Discussion | SPC | 113 min |
| Jun 3, 6:37 PM CDT | Mesoscale Discussion | SPC | 113 min |
| Jun 3, 9:29 PM CDT | Special Weather Statement | ILX | 46 min |
| Jun 9, 2:20 AM CDT | Wind Advisory | ILX | 18 hr |
| Jun 22, 12:48 PM CDT | Mesoscale Discussion | SPC | 2 hr |
| Jun 22, 1:36 PM CDT | Severe Thunderstorm Watch | SPC | 7 hr |
| Jun 22, 3:38 PM CDT | Mesoscale Discussion | SPC | 97 min |
| Jul 9, 8:41 PM CDT | Severe Thunderstorm Warning | ILX | 45 min |
| Jul 9, 9:16 PM CDT | Severe Thunderstorm Warning | ILX | 44 min |
| Jul 11, 9:36 AM CDT | Mesoscale Discussion | SPC | 114 min |
| Jul 11, 3:58 PM CDT | Severe Thunderstorm Watch | SPC | 8 hr |
| Jul 11, 7:17 PM CDT | Mesoscale Discussion | SPC | 58 min |
| Jul 11, 9:03 PM CDT | Severe Thunderstorm Warning | ILX | 42 min |
| Jul 15, 12:51 PM CDT | Severe Thunderstorm Warning | ILX | 54 min |
| Jul 15, 2:10 PM CDT | Tornado Watch | SPC | 7 hr |
| Jul 15, 2:13 PM CDT | Mesoscale Discussion | SPC | 62 min |
| Jul 15, 5:17 PM CDT | Flash Flood Warning | ILX | 5 hr |
| Jul 17, 3:39 AM CDT | Heat Advisory | ILX | 40 hr |
| Jul 26, 2:30 AM CDT | Heat Advisory | ILX | 16 hr |
| Aug 10, 10:42 AM CDT | Mesoscale Discussion | SPC | 93 min |
| Aug 10, 2:50 PM CDT | Severe Thunderstorm Warning | ILX | 40 min |
| Aug 10, 2:58 PM CDT | Severe Thunderstorm Watch | SPC | 6 hr |
| Aug 15, 4:40 PM CDT | Mesoscale Discussion | SPC | 95 min |
| Sep 3, 2:58 AM CDT | Dense Fog Advisory | ILX | 6 hr |
| Sep 6, 9:01 AM CDT | Special Weather Statement | ILX | 44 min |
| Sep 6, 9:09 AM CDT | Severe Thunderstorm Warning | ILX | 36 min |
| Oct 4, 2:19 AM CDT | Frost Advisory | ILX | 30 hr |
| Oct 14, 4:10 AM CDT | Wind Advisory | ILX | 15 hr |
| Oct 14, 4:19 AM CDT | Red Flag Warning | ILX | 15 hr |
| Oct 15, 3:15 AM CDT | Freeze Warning | ILX | 30 hr |
| Oct 16, 3:52 AM CDT | Fire Weather Watch | ILX | 11 hr |
| Oct 16, 2:29 PM CDT | Red Flag Warning | ILX | 30 hr |
| Oct 16, 3:03 PM CDT | Wind Advisory | ILX | 28 hr |
| Oct 22, 12:58 AM CDT | Dense Fog Advisory | ILX | 6 hr |
| Nov 10, 2:46 AM CST | Wind Advisory | ILX | 17 hr |
| Nov 10, 11:22 AM CST | Severe Thunderstorm Watch | SPC | 7 hr |
| Nov 10, 1:48 PM CST | Mesoscale Discussion | SPC | 87 min |
| Nov 10, 2:41 PM CST | Severe Thunderstorm Warning | ILX | 49 min |
| Nov 10, 3:25 PM CST | Severe Thunderstorm Warning | ILX | 50 min |
| Nov 14, 3:20 AM CST | Wind Advisory | ILX | 38 hr |
| Nov 18, 2:43 PM CST | Wind Advisory | ILX | 27 hr |
| Dec 23, 3:05 AM CST | Wind Advisory | ILX | 24 hr |
| Dec 28, 3:02 PM CST | Winter Weather Advisory | ILX | 37 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 | 12 |
| Severe Thunderstorm Watch | 7 |
| Tornado Watch | 4 |
| Mesoscale Discussion | 22 |
| Special Weather Statement | 2 |
| Flooding | |
| Flash Flood Warning | 1 |
| River Flood Warning | 11 |
| Flash Flood Watch | 2 |
| Flood Watch | 2 |
| Winter | |
| Winter Weather Advisory | 7 |
| Heat | |
| Heat Advisory | 2 |
| Cold | |
| Freeze Warning | 4 |
| Freeze Watch | 1 |
| Frost Advisory | 2 |
| Wind Chill Advisory | 2 |
| Wind and dust | |
| Wind Advisory | 12 |
| Fire | |
| Red Flag Warning | 2 |
| Fire Weather Watch | 1 |
| Fog and smoke | |
| Dense Fog Advisory | 8 |
The busiest days
Days with the most alerts issued, by UTC date.
Nearby
Alerts in force nowTornadoes on recordForecastThe radar archive20192021
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.