Alert archive / Illinois / Vermilion County
Weather alerts in Vermilion County, Illinois, 2018
103 weather alerts in 2018, from the National Weather Service and the Storm Prediction Center. An alert counts here when it covered this county.
Vermilion County and its neighbors
Each county as a circle sized by its count in 2018. Tap one for its archive.
- Alerts
- 103
- Warnings
- 31
- Watches
- 7
- Advisories
- 38
- Busiest month
- June18 alerts
- Busiest day
- August 7, 20189 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 2 tornado warnings covering Vermilion County in 2018 had a tornado report inside them.
Vermilion County, 2018
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| Tornado warnings | 2 | 0 | 100% | 0 | ||
| Severe thunderstorm warnings | 14 | 7 | 50% | 17 | 41% | 16 min |
| Flash flood warnings | 5 | 3 | 40% | 4 | 100% | 57 min |
Each office's whole area, 2018
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| NWS Lincoln, IL: tornado warnings | 32 | 11 | 66% | 47 | 66% | 16 min |
| NWS Lincoln, IL: severe thunderstorm warnings | 151 | 69 | 54% | 218 | 66% | 20 min |
| NWS Lincoln, IL: flash flood warnings | 33 | 14 | 58% | 56 | 93% | 98 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 2, 2:56 PM CST | Wind Chill Advisory | ILX | 45 hr |
| Jan 4, 2:18 PM CST | Wind Chill Advisory | ILX | 20 hr |
| Jan 5, 3:06 PM CST | Wind Chill Advisory | ILX | 19 hr |
| Jan 6, 3:14 AM CST | Winter Weather Advisory | ILX | 48 hr |
| Jan 7, 6:16 PM CST | Mesoscale Discussion | SPC | 6 hr |
| Jan 8, 9:31 PM CST | Dense Fog Advisory | ILX | 14 hr |
| Jan 9, 7:17 PM CST | Dense Fog Advisory | ILX | 17 hr |
| Jan 11, 3:13 AM CST | Winter Weather Advisory | ILX | 37 hr |
| Jan 11, 8:43 PM CST | Mesoscale Discussion | SPC | 6 hr |
| Jan 14, 3:15 PM CST | Wind Chill Advisory | ILX | 45 hr |
| Jan 14, 3:15 PM CST | Winter Weather Advisory | ILX | 24 hr |
| Jan 21, 2:25 AM CST | Dense Fog Advisory | ILX | 14 hr |
| Feb 10, 3:46 PM CST | Winter Weather Advisory | ILX | 17 hr |
| Feb 14, 7:45 PM CST | Dense Fog Advisory | ILX | 22 hr |
| Feb 20, 3:25 AM CST | Flood Watch | ILX | 27 hr |
| Feb 20, 7:16 PM CST | Flash Flood Warning | ILX | 6 hr |
| Feb 20, 7:36 PM CST | River Flood Warning | ILX | 4 days |
| Feb 21, 1:23 AM CST | Areal Flood Warning | ILX | 12 hr |
| Feb 21, 1:12 PM CST | Areal Flood Warning | ILX | 24 hr |
| Feb 21, 3:41 PM CST | Winter Weather Advisory | ILX | 18 hr |
| Feb 22, 1:11 PM CST | Areal Flood Warning | ILX | 27 hr |
| Feb 28, 11:05 PM CST | Dense Fog Advisory | ILX | 5 hr |
| Mar 23, 3:33 AM CDT | Winter Storm Warning | ILX | 42 hr |
| Mar 23, 3:33 AM CDT | Winter Weather Advisory | ILX | 24 hr |
| Mar 26, 2:56 AM CDT | Flood Watch | ILX | 46 hr |
| Mar 31, 3:05 PM CDT | Winter Weather Advisory | ILX | 32 hr |
| Apr 2, 2:11 AM CDT | Dense Fog Advisory | ILX | 7 hr |
| Apr 28, 3:00 AM CDT | Freeze Warning | ILX | 28 hr |
| May 1, 2:57 AM CDT | Red Flag Warning | ILX | 16 hr |
| May 9, 7:43 PM CDT | Severe Thunderstorm Warning | ILX | 32 min |
| May 27, 3:47 PM CDT | Mesoscale Discussion | SPC | 118 min |
| May 30, 3:12 PM CDT | Special Weather Statement | ILX | 2 hr |
| May 31, 5:42 PM CDT | Special Weather Statement | ILX | 48 min |
| May 31, 6:06 PM CDT | Severe Thunderstorm Warning | ILX | 39 min |
| Jun 2, 6:55 PM CDT | Mesoscale Discussion | SPC | 2 hr |
| Jun 2, 7:41 PM CDT | Severe Thunderstorm Warning | ILX | 49 min |
| Jun 10, 10:04 AM CDT | Mesoscale Discussion | SPC | 116 min |
| Jun 10, 12:46 PM CDT | Severe Thunderstorm Watch | SPC | 7 hr |
| Jun 10, 2:15 PM CDT | Severe Thunderstorm Warning | ILX | 45 min |
| Jun 10, 2:38 PM CDT | Tornado Warning | ILX | 52 min |
| Jun 10, 2:42 PM CDT | Mesoscale Discussion | SPC | 93 min |
| Jun 10, 3:13 PM CDT | Flash Flood Warning | ILX | 3 hr |
| Jun 10, 8:38 PM CDT | River Flood Warning | ILX | 24 hr |
| Jun 15, 3:36 AM CDT | Heat Advisory | ILX | 4 days |
| Jun 19, 12:37 PM CDT | Mesoscale Discussion | SPC | 113 min |
| Jun 19, 6:32 PM CDT | Special Weather Statement | ILX | 43 min |
| Jun 20, 8:28 PM CDT | Areal Flood Advisory | ILX | 3 hr |
| Jun 22, 10:49 AM CDT | Special Weather Statement | ILX | 6 hr |
| Jun 22, 1:32 PM CDT | Special Weather Statement | ILX | 4 hr |
| Jun 26, 8:46 PM CDT | Tornado Warning | ILX | 13 min |
| Jun 27, 2:55 PM CDT | Heat Advisory | ILX | 24 hr |
| Jun 28, 2:52 PM CDT | Excessive Heat Warning | ILX | 3 days |
| Jul 1, 12:23 PM CDT | Mesoscale Discussion | SPC | 97 min |
| Jul 1, 12:58 PM CDT | Severe Thunderstorm Watch | SPC | 7 hr |
| Jul 1, 3:37 PM CDT | Mesoscale Discussion | SPC | 83 min |
| Jul 1, 6:51 PM CDT | Mesoscale Discussion | SPC | 114 min |
| Jul 3, 3:05 AM CDT | Heat Advisory | ILX | 64 hr |
| Jul 5, 12:23 PM CDT | Flash Flood Warning | ILX | 3 hr |
| Jul 14, 3:09 AM CDT | Heat Advisory | ILX | 13 hr |
| Jul 14, 9:21 AM CDT | Severe Thunderstorm Warning | ILX | 39 min |
| Jul 14, 9:58 AM CDT | Severe Thunderstorm Warning | ILX | 32 min |
| Jul 14, 10:07 AM CDT | Special Weather Statement | ILX | 38 min |
| Aug 1, 3:34 AM CDT | Dense Fog Advisory | ILX | 5 hr |
| Aug 2, 6:47 PM CDT | Severe Thunderstorm Warning | ILX | 43 min |
| Aug 2, 7:28 PM CDT | Severe Thunderstorm Warning | ILX | 47 min |
| Aug 6, 5:21 PM CDT | Mesoscale Discussion | SPC | 114 min |
| Aug 6, 7:06 PM CDT | Special Weather Statement | ILX | 39 min |
| Aug 6, 7:22 PM CDT | Severe Thunderstorm Warning | ILX | 30 min |
| Aug 6, 7:39 PM CDT | Severe Thunderstorm Warning | ILX | 43 min |
| Aug 6, 10:14 PM CDT | Severe Thunderstorm Warning | ILX | 46 min |
| Aug 6, 10:17 PM CDT | Flash Flood Warning | ILX | 3 hr |
| Aug 6, 10:30 PM CDT | Severe Thunderstorm Warning | ILX | 15 min |
| Aug 6, 10:46 PM CDT | Severe Thunderstorm Warning | ILX | 44 min |
| Aug 7, 1:15 AM CDT | Areal Flood Advisory | ILX | 3 hr |
| Aug 7, 4:12 AM CDT | Areal Flood Advisory | ILX | 3 hr |
| Aug 17, 12:30 PM CDT | Special Weather Statement | ILX | 6 hr |
| Aug 26, 4:09 AM CDT | Heat Advisory | ILX | 63 hr |
| Sep 6, 3:21 PM CDT | Flash Flood Watch | ILX | 51 hr |
| Sep 7, 2:06 PM CDT | Flash Flood Warning | ILX | 6 hr |
| Sep 11, 2:43 AM CDT | Dense Fog Advisory | ILX | 6 hr |
| Sep 25, 4:24 PM CDT | Special Weather Statement | ILX | 51 min |
| Sep 25, 5:21 PM CDT | Mesoscale Discussion | SPC | 114 min |
| Sep 25, 5:22 PM CDT | Special Weather Statement | ILX | 8 min |
| Sep 25, 5:59 PM CDT | Special Weather Statement | ILX | 46 min |
| Oct 6, 12:39 PM CDT | Mesoscale Discussion | SPC | 2 hr |
| Oct 6, 12:54 PM CDT | Special Weather Statement | ILX | 51 min |
| Oct 6, 1:27 PM CDT | Severe Thunderstorm Warning | ILX | 48 min |
| Oct 6, 1:31 PM CDT | Severe Thunderstorm Watch | SPC | 5 hr |
| Oct 6, 1:51 PM CDT | Special Weather Statement | ILX | 24 min |
| Oct 11, 3:41 AM CDT | Frost Advisory | ILX | 28 hr |
| Oct 15, 3:20 AM CDT | Freeze Watch | ILX | 12 hr |
| Oct 15, 2:54 PM CDT | Freeze Warning | ILX | 17 hr |
| Oct 20, 9:36 AM CDT | Wind Advisory | ILX | 8 hr |
| Oct 27, 4:17 PM CDT | Wind Advisory | ILX | 26 hr |
| Nov 1, 9:19 AM CDT | Wind Advisory | ILX | 6 hr |
| Nov 14, 3:55 AM CST | Winter Weather Advisory | ILX | 35 hr |
| Nov 15, 12:11 AM CST | Mesoscale Discussion | SPC | 6 hr |
| Nov 25, 11:45 AM CST | Wind Advisory | ILX | 21 hr |
| Nov 30, 8:09 PM CST | Dense Fog Advisory | ILX | 8 hr |
| Dec 10, 3:12 AM CST | Dense Fog Advisory | ILX | 11 hr |
| Dec 10, 5:22 PM CST | Dense Fog Advisory | ILX | 6 hr |
| Dec 13, 3:06 PM CST | Dense Fog Advisory | ILX | 5 hr |
| Dec 27, 12:14 PM CST | Wind Advisory | ILX | 5 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 | 14 |
| Tornado Warning | 2 |
| Severe Thunderstorm Watch | 3 |
| Mesoscale Discussion | 14 |
| Special Weather Statement | 13 |
| Flooding | |
| Areal Flood Warning | 3 |
| Flash Flood Warning | 5 |
| River Flood Warning | 2 |
| Flash Flood Watch | 1 |
| Flood Watch | 2 |
| Areal Flood Advisory | 3 |
| Winter | |
| Winter Storm Warning | 1 |
| Winter Weather Advisory | 8 |
| Heat | |
| Excessive Heat Warning | 1 |
| Heat Advisory | 5 |
| Cold | |
| Freeze Warning | 2 |
| Freeze Watch | 1 |
| Frost Advisory | 1 |
| Wind Chill Advisory | 4 |
| Wind and dust | |
| Wind Advisory | 5 |
| Fire | |
| Red Flag Warning | 1 |
| Fog and smoke | |
| Dense Fog Advisory | 12 |
The busiest days
Days with the most alerts issued, by UTC date.
Nearby
Alerts in force nowTornadoes on recordForecastThe radar archive20172019
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.