Alert archive / Illinois / Mercer County
Weather alerts in Mercer County, Illinois, 2017
140 weather alerts in 2017, from the National Weather Service and the Storm Prediction Center. An alert counts here when it covered this county.
Mercer County and its neighbors
Each county as a circle sized by its count in 2017. Tap one for its archive.
- Alerts
- 140
- Warnings
- 38
- Watches
- 28
- Advisories
- 32
- Busiest month
- July31 alerts
- Busiest day
- February 28, 20176 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, 4:31 PM CST | Dense Fog Advisory | DVN | 15 hr |
| Jan 10, 9:41 AM CST | Wind Advisory | DVN | 11 hr |
| Jan 11, 1:32 PM CST | Dense Fog Advisory | DVN | 6 hr |
| Jan 12, 3:33 PM CST | Winter Storm Watch | DVN | 48 hr |
| Jan 14, 3:47 PM CST | Winter Weather Advisory | DVN | 47 hr |
| Jan 16, 4:30 PM CST | Dense Fog Advisory | DVN | 14 hr |
| Jan 19, 3:26 PM CST | Dense Fog Advisory | DVN | 21 hr |
| Jan 20, 3:14 PM CST | Dense Fog Advisory | DVN | 21 hr |
| Jan 21, 3:50 PM CST | Dense Fog Advisory | DVN | 19 hr |
| Feb 6, 9:10 PM CST | Dense Fog Advisory | DVN | 15 hr |
| Feb 8, 3:33 AM CST | Winter Weather Advisory | DVN | 12 hr |
| Feb 22, 12:26 AM CST | Dense Fog Advisory | DVN | 10 hr |
| Feb 26, 11:59 AM CST | River Flood Watch | DVN | 47 hr |
| Feb 26, 11:59 AM CST | River Flood Watch | DVN | 47 hr |
| Feb 26, 11:59 AM CST | River Flood Watch | DVN | 47 hr |
| Feb 28, 10:39 AM CST | River Flood Warning | DVN | 7 days |
| Feb 28, 10:39 AM CST | River Flood Warning | DVN | 9 days |
| Feb 28, 10:39 AM CST | River Flood Warning | DVN | 10 days |
| Feb 28, 2:03 PM CST | Mesoscale Discussion | SPC | 2 hr |
| Feb 28, 2:57 PM CST | Tornado Watch | SPC | 7 hr |
| Feb 28, 5:24 PM CST | Mesoscale Discussion | SPC | 96 min |
| Feb 28, 8:06 PM CST | Mesoscale Discussion | SPC | 84 min |
| Feb 28, 8:22 PM CST | Severe Thunderstorm Warning | DVN | 23 min |
| Feb 28, 8:32 PM CST | Severe Thunderstorm Warning | DVN | 30 min |
| Mar 6, 7:42 PM CST | Mesoscale Discussion | SPC | 63 min |
| Mar 6, 8:52 PM CST | Tornado Watch | SPC | 6 hr |
| Mar 6, 9:52 PM CST | Severe Thunderstorm Warning | DVN | 83 min |
| Mar 6, 10:58 PM CST | Tornado Warning | DVN | 32 min |
| Mar 7, 3:32 AM CST | Red Flag Warning | DVN | 14 hr |
| Mar 8, 10:21 AM CST | Red Flag Warning | DVN | 8 hr |
| Mar 12, 4:27 AM CDT | Winter Weather Advisory | DVN | 33 hr |
| Mar 19, 11:50 PM CDT | Mesoscale Discussion | SPC | 85 min |
| Apr 10, 1:53 AM CDT | Mesoscale Discussion | SPC | 2 hr |
| Apr 10, 2:44 AM CDT | Special Weather Statement | DVN | 61 min |
| Apr 10, 3:56 AM CDT | Special Weather Statement | DVN | 34 min |
| Apr 15, 5:06 PM CDT | Mesoscale Discussion | SPC | 84 min |
| Apr 19, 10:26 AM CDT | River Flood Watch | DVN | 58 hr |
| Apr 24, 9:35 PM CDT | River Flood Watch | DVN | 6 days |
| Apr 25, 10:03 AM CDT | River Flood Warning | DVN | 22 days |
| Apr 25, 10:16 AM CDT | River Flood Watch | DVN | 7 days |
| Apr 27, 10:17 AM CDT | River Flood Warning | DVN | 19 days |
| Apr 28, 11:05 AM CDT | River Flood Watch | DVN | 25 hr |
| Apr 29, 11:43 AM CDT | River Flood Warning | DVN | 7 days |
| Apr 29, 4:41 PM CDT | Special Weather Statement | DVN | 79 min |
| Apr 30, 8:14 PM CDT | Special Weather Statement | DVN | 61 min |
| May 2, 3:16 AM CDT | Frost Advisory | DVN | 28 hr |
| May 10, 12:05 PM CDT | Mesoscale Discussion | SPC | 2 hr |
| May 10, 12:59 PM CDT | Severe Thunderstorm Watch | SPC | 7 hr |
| May 11, 10:22 AM CDT | River Flood Warning | DVN | 6 days |
| May 17, 3:24 PM CDT | Mesoscale Discussion | SPC | 66 min |
| May 17, 3:44 PM CDT | Tornado Watch | SPC | 9 hr |
| May 17, 4:40 PM CDT | Tornado Warning | DVN | 50 min |
| May 17, 6:38 PM CDT | Severe Thunderstorm Warning | DVN | 52 min |
| May 17, 7:00 PM CDT | Tornado Warning | DVN | 45 min |
| May 17, 7:14 PM CDT | Severe Thunderstorm Warning | DVN | 61 min |
| May 17, 7:30 PM CDT | Severe Thunderstorm Warning | DVN | 45 min |
| May 17, 7:37 PM CDT | Severe Thunderstorm Warning | DVN | 38 min |
| May 17, 8:05 PM CDT | Tornado Warning | DVN | 40 min |
| May 17, 8:08 PM CDT | Severe Thunderstorm Warning | DVN | 67 min |
| May 19, 11:39 AM CDT | River Flood Watch | DVN | 5 days |
| May 22, 10:42 AM CDT | River Flood Watch | DVN | 50 hr |
| May 23, 12:30 PM CDT | River Flood Watch | DVN | 24 hr |
| May 24, 12:04 PM CDT | River Flood Warning | DVN | 13 days |
| May 24, 12:04 PM CDT | River Flood Warning | DVN | 14 days |
| May 24, 12:04 PM CDT | River Flood Warning | DVN | 15 days |
| May 27, 1:53 AM CDT | Dense Fog Advisory | DVN | 8 hr |
| Jun 13, 10:42 AM CDT | Heat Advisory | DVN | 9 hr |
| Jun 14, 12:06 PM CDT | Mesoscale Discussion | SPC | 2 hr |
| Jun 14, 12:40 PM CDT | Severe Thunderstorm Watch | SPC | 7 hr |
| Jun 14, 1:57 PM CDT | Severe Thunderstorm Warning | DVN | 48 min |
| Jun 15, 10:16 PM CDT | Severe Thunderstorm Warning | DVN | 59 min |
| Jun 16, 10:25 PM CDT | Severe Thunderstorm Watch | SPC | 5 hr |
| Jun 17, 1:35 AM CDT | Mesoscale Discussion | SPC | 115 min |
| Jun 17, 2:44 PM CDT | Mesoscale Discussion | SPC | 2 hr |
| Jun 17, 5:36 PM CDT | Severe Thunderstorm Warning | DVN | 39 min |
| Jun 17, 5:39 PM CDT | Severe Thunderstorm Watch | SPC | 7 hr |
| Jun 17, 6:05 PM CDT | Severe Thunderstorm Warning | DVN | 40 min |
| Jun 17, 8:17 PM CDT | Mesoscale Discussion | SPC | 58 min |
| Jun 19, 12:44 PM CDT | Mesoscale Discussion | SPC | 3 hr |
| Jun 20, 2:05 PM CDT | Mesoscale Discussion | SPC | 2 hr |
| Jul 5, 5:43 PM CDT | Special Weather Statement | DVN | 32 min |
| Jul 10, 1:49 AM CDT | Mesoscale Discussion | SPC | 116 min |
| Jul 10, 4:32 AM CDT | Special Weather Statement | DVN | 58 min |
| Jul 10, 4:48 AM CDT | Severe Thunderstorm Warning | DVN | 42 min |
| Jul 10, 2:20 PM CDT | Heat Advisory | DVN | 5 hr |
| Jul 11, 6:26 AM CDT | Special Weather Statement | DVN | 49 min |
| Jul 11, 7:10 AM CDT | Special Weather Statement | DVN | 50 min |
| Jul 11, 11:25 AM CDT | Heat Advisory | DVN | 9 hr |
| Jul 12, 4:05 AM CDT | Heat Advisory | DVN | 16 hr |
| Jul 12, 3:13 PM CDT | Flash Flood Watch | DVN | 12 hr |
| Jul 17, 3:37 PM CDT | Excessive Heat Watch | DVN | 36 hr |
| Jul 18, 3:08 PM CDT | Excessive Heat Warning | DVN | 4 days |
| Jul 18, 6:28 PM CDT | Special Weather Statement | DVN | 47 min |
| Jul 18, 7:05 PM CDT | Special Weather Statement | DVN | 55 min |
| Jul 18, 7:32 PM CDT | Special Weather Statement | DVN | 43 min |
| Jul 20, 8:45 PM CDT | Severe Thunderstorm Warning | DVN | 31 min |
| Jul 21, 1:32 PM CDT | Mesoscale Discussion | SPC | 2 hr |
| Jul 21, 4:52 PM CDT | Severe Thunderstorm Watch | SPC | 9 hr |
| Jul 21, 6:28 PM CDT | Mesoscale Discussion | SPC | 92 min |
| Jul 21, 6:56 PM CDT | Special Weather Statement | DVN | 64 min |
| Jul 21, 7:33 PM CDT | Severe Thunderstorm Warning | DVN | 57 min |
| Jul 21, 8:35 PM CDT | Mesoscale Discussion | SPC | 115 min |
| Jul 21, 11:23 PM CDT | Mesoscale Discussion | SPC | 67 min |
| Jul 22, 12:23 PM CDT | River Flood Watch | DVN | 8 days |
| Jul 22, 12:23 PM CDT | River Flood Watch | DVN | 24 hr |
| Jul 22, 12:23 PM CDT | River Flood Watch | DVN | 24 hr |
| Jul 23, 11:36 AM CDT | River Flood Warning | DVN | 6 days |
| Jul 23, 11:36 AM CDT | River Flood Warning | DVN | 7 days |
| Jul 23, 11:36 AM CDT | River Flood Warning | DVN | 7 days |
| Jul 26, 3:23 AM CDT | Flash Flood Watch | DVN | 20 hr |
| Jul 26, 4:55 PM CDT | Mesoscale Discussion | SPC | 65 min |
| Aug 3, 4:46 PM CDT | Special Weather Statement | DVN | 44 min |
| Aug 3, 5:08 PM CDT | Severe Thunderstorm Warning | DVN | 21 min |
| Aug 3, 5:18 PM CDT | Mesoscale Discussion | SPC | 2 hr |
| Aug 10, 2:07 PM CDT | Mesoscale Discussion | SPC | 113 min |
| Aug 10, 2:47 PM CDT | Severe Thunderstorm Watch | SPC | 6 hr |
| Aug 10, 5:14 PM CDT | Severe Thunderstorm Warning | DVN | 15 min |
| Aug 10, 5:31 PM CDT | Mesoscale Discussion | SPC | 89 min |
| Aug 16, 2:35 PM CDT | Mesoscale Discussion | SPC | 2 hr |
| Aug 28, 2:18 AM CDT | Dense Fog Advisory | DVN | 9 hr |
| Aug 29, 2:41 AM CDT | Dense Fog Advisory | DVN | 8 hr |
| Aug 30, 4:52 AM CDT | Dense Fog Advisory | DVN | 4 hr |
| Sep 19, 12:50 AM CDT | Dense Fog Advisory | DVN | 9 hr |
| Sep 20, 7:38 PM CDT | Special Weather Statement | DVN | 67 min |
| Sep 20, 7:40 PM CDT | Special Weather Statement | DVN | 65 min |
| Sep 22, 10:16 AM CDT | Heat Advisory | DVN | 9 hr |
| Oct 14, 3:30 AM CDT | Flash Flood Watch | DVN | 19 hr |
| Oct 14, 5:09 PM CDT | Tornado Watch | SPC | 8 hr |
| Oct 27, 3:39 AM CDT | Freeze Warning | DVN | 53 hr |
| Nov 2, 1:31 AM CDT | Dense Fog Advisory | DVN | 9 hr |
| Nov 4, 11:19 PM CDT | Dense Fog Advisory | DVN | 8 hr |
| Dec 4, 6:26 PM CST | Special Weather Statement | DVN | 79 min |
| Dec 4, 9:58 PM CST | Wind Advisory | DVN | 20 hr |
| Dec 13, 3:26 AM CST | Wind Advisory | DVN | 17 hr |
| Dec 23, 3:20 AM CST | Winter Weather Advisory | DVN | 39 hr |
| Dec 24, 1:31 PM CST | Special Weather Statement | DVN | 3 hr |
| Dec 26, 1:25 PM CST | Wind Chill Advisory | DVN | 22 hr |
| Dec 28, 3:15 PM CST | Winter Weather Advisory | DVN | 29 hr |
| Dec 29, 3:11 PM CST | Wind Chill Advisory | DVN | 54 hr |
| Dec 29, 8:14 PM CST | Winter Weather Advisory | DVN | 106 min |
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 | 17 |
| Tornado Warning | 4 |
| Severe Thunderstorm Watch | 6 |
| Tornado Watch | 4 |
| Mesoscale Discussion | 25 |
| Special Weather Statement | 17 |
| Flooding | |
| River Flood Warning | 13 |
| Flash Flood Watch | 3 |
| River Flood Watch | 13 |
| Winter | |
| Winter Storm Watch | 1 |
| Winter Weather Advisory | 6 |
| Heat | |
| Excessive Heat Warning | 1 |
| Excessive Heat Watch | 1 |
| Heat Advisory | 5 |
| Cold | |
| Freeze Warning | 1 |
| Frost Advisory | 1 |
| Wind Chill Advisory | 2 |
| Wind and dust | |
| Wind Advisory | 3 |
| Fire | |
| Red Flag Warning | 2 |
| Fog and smoke | |
| Dense Fog Advisory | 15 |
The busiest days
Days with the most alerts issued, by UTC date.
Nearby
Alerts in force nowTornadoes on recordForecastThe radar archive20162018
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.