Alert archive / Illinois / Vermilion County
Weather alerts in Vermilion County, Illinois, 2015
134 weather alerts in 2015, 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 2015. Tap one for its archive.
- Alerts
- 134
- Warnings
- 40
- Watches
- 17
- Advisories
- 44
- Busiest month
- June21 alerts
- Busiest day
- June 8, 20159 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 1 tornado warnings covering Vermilion County in 2015 had a tornado report inside them.
Vermilion County, 2015
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| Tornado warnings | 1 | 0 | 100% | 0 | ||
| Severe thunderstorm warnings | 12 | 7 | 42% | 28 | 61% | 29 min |
| Flash flood warnings | 11 | 3 | 73% | 5 | 60% | 42 min |
Each office's whole area, 2015
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| NWS Lincoln, IL: tornado warnings | 20 | 4 | 80% | 16 | 31% | 3 min |
| NWS Lincoln, IL: severe thunderstorm warnings | 150 | 72 | 52% | 307 | 67% | 22 min |
| NWS Lincoln, IL: flash flood warnings | 78 | 25 | 68% | 55 | 80% | 144 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 4, 8:09 PM CST | Winter Weather Advisory | ILX | 30 hr |
| Jan 5, 2:04 PM CST | Winter Storm Warning | ILX | 12 hr |
| Jan 5, 6:29 PM CST | Mesoscale Discussion | SPC | 5 hr |
| Jan 6, 3:13 AM CST | Wind Chill Warning | ILX | 57 hr |
| Jan 8, 2:39 PM CST | Wind Chill Advisory | ILX | 43 hr |
| Jan 8, 9:51 PM CST | Winter Weather Advisory | ILX | 13 hr |
| Jan 10, 3:17 PM CST | Winter Weather Advisory | ILX | 42 hr |
| Jan 11, 1:08 PM CST | Mesoscale Discussion | SPC | 5 hr |
| Jan 26, 8:00 PM CST | Freezing Rain Advisory | ILX | 10 hr |
| Jan 30, 12:01 PM CST | Winter Storm Watch | ILX | 16 hr |
| Jan 31, 4:04 AM CST | Winter Storm Warning | ILX | 44 hr |
| Jan 31, 4:04 AM CST | Winter Weather Advisory | ILX | 44 hr |
| Feb 14, 3:45 AM CST | Wind Chill Advisory | ILX | 29 hr |
| Feb 17, 3:19 PM CST | Wind Chill Advisory | ILX | 45 hr |
| Feb 20, 4:02 AM CST | Winter Weather Advisory | ILX | 11 hr |
| Feb 20, 2:42 PM CST | Winter Storm Warning | ILX | 19 hr |
| Feb 22, 3:12 AM CST | Wind Chill Advisory | ILX | 30 hr |
| Feb 24, 3:41 AM CST | Wind Chill Advisory | ILX | 4 hr |
| Feb 26, 2:51 PM CST | Wind Chill Advisory | ILX | 19 hr |
| Feb 28, 3:09 AM CST | Winter Weather Advisory | ILX | 39 hr |
| Mar 2, 3:06 PM CST | Winter Weather Advisory | ILX | 19 hr |
| Mar 10, 7:54 PM CDT | Dense Fog Advisory | ILX | 16 hr |
| Mar 13, 10:50 PM CDT | Dense Fog Advisory | ILX | 8 hr |
| Apr 7, 6:48 AM CDT | Dense Fog Advisory | ILX | 4 hr |
| Apr 8, 6:14 AM CDT | Severe Thunderstorm Warning | ILX | 45 min |
| Apr 8, 1:05 PM CDT | Severe Thunderstorm Watch | SPC | 5 hr |
| Apr 8, 2:43 PM CDT | Mesoscale Discussion | SPC | 92 min |
| Apr 9, 4:38 AM CDT | Special Weather Statement | ILX | 52 min |
| Apr 9, 4:53 AM CDT | Severe Thunderstorm Warning | ILX | 52 min |
| Apr 9, 5:54 AM CDT | Flash Flood Warning | ILX | 6 hr |
| Apr 9, 1:48 PM CDT | Tornado Watch | SPC | 9 hr |
| Apr 9, 3:12 PM CDT | Mesoscale Discussion | SPC | 93 min |
| Apr 17, 2:05 AM CDT | Dense Fog Advisory | ILX | 7 hr |
| Apr 21, 3:33 AM CDT | Wind Advisory | ILX | 15 hr |
| Apr 22, 3:04 PM CDT | Freeze Warning | ILX | 17 hr |
| Apr 23, 3:39 PM CDT | Freeze Warning | ILX | 16 hr |
| May 8, 12:59 PM CDT | Mesoscale Discussion | SPC | 3 hr |
| May 10, 8:17 PM CDT | Special Weather Statement | ILX | 43 min |
| May 10, 8:34 PM CDT | Severe Thunderstorm Warning | ILX | 26 min |
| May 10, 8:59 PM CDT | Severe Thunderstorm Warning | ILX | 31 min |
| May 15, 4:43 PM CDT | Special Weather Statement | ILX | 32 min |
| May 15, 5:15 PM CDT | Areal Flood Advisory | ILX | 2 hr |
| May 15, 5:42 PM CDT | Special Weather Statement | ILX | 33 min |
| May 15, 6:48 PM CDT | Special Weather Statement | ILX | 42 min |
| May 16, 4:43 PM CDT | Flash Flood Warning | ILX | 5 hr |
| May 24, 10:40 PM CDT | Mesoscale Discussion | SPC | 95 min |
| May 27, 11:09 AM CDT | Mesoscale Discussion | SPC | 96 min |
| May 30, 10:51 AM CDT | Mesoscale Discussion | SPC | 114 min |
| May 30, 6:23 PM CDT | Mesoscale Discussion | SPC | 67 min |
| Jun 7, 2:36 PM CDT | Severe Thunderstorm Watch | SPC | 5 hr |
| Jun 7, 5:34 PM CDT | Mesoscale Discussion | SPC | 86 min |
| Jun 7, 6:55 PM CDT | Flash Flood Warning | ILX | 5 hr |
| Jun 7, 7:23 PM CDT | Severe Thunderstorm Warning | ILX | 52 min |
| Jun 7, 7:48 PM CDT | Severe Thunderstorm Watch | SPC | 7 hr |
| Jun 7, 8:04 PM CDT | Flash Flood Warning | ILX | 4 hr |
| Jun 7, 8:47 PM CDT | Severe Thunderstorm Warning | ILX | 43 min |
| Jun 7, 9:29 PM CDT | Severe Thunderstorm Warning | ILX | 46 min |
| Jun 7, 9:39 PM CDT | Tornado Warning | ILX | 36 min |
| Jun 7, 11:35 PM CDT | Flash Flood Warning | ILX | 9 hr |
| Jun 8, 3:50 AM CDT | River Flood Warning | ILX | 49 hr |
| Jun 8, 9:46 AM CDT | Areal Flood Advisory | ILX | 4 hr |
| Jun 14, 12:20 PM CDT | Mesoscale Discussion | SPC | 115 min |
| Jun 18, 1:10 PM CDT | Special Weather Statement | ILX | 65 min |
| Jun 20, 10:13 PM CDT | Severe Thunderstorm Watch | SPC | 4 hr |
| Jun 20, 11:10 PM CDT | Severe Thunderstorm Warning | ILX | 65 min |
| Jun 20, 11:32 PM CDT | Mesoscale Discussion | SPC | 58 min |
| Jun 22, 10:00 PM CDT | Mesoscale Discussion | SPC | 60 min |
| Jun 25, 4:33 AM CDT | Flash Flood Warning | ILX | 5 hr |
| Jun 26, 4:05 AM CDT | Flash Flood Watch | ILX | 18 hr |
| Jun 26, 1:57 PM CDT | Areal Flood Advisory | ILX | 7 hr |
| Jul 7, 2:46 PM CDT | Flash Flood Watch | ILX | 39 hr |
| Jul 11, 12:33 PM CDT | Mesoscale Discussion | SPC | 87 min |
| Jul 11, 1:39 PM CDT | Severe Thunderstorm Watch | SPC | 6 hr |
| Jul 11, 3:56 PM CDT | Mesoscale Discussion | SPC | 2 hr |
| Jul 12, 3:27 PM CDT | Flash Flood Watch | ILX | 31 hr |
| Jul 13, 8:48 AM CDT | Special Weather Statement | ILX | 57 min |
| Jul 13, 9:17 AM CDT | Severe Thunderstorm Watch | SPC | 4 hr |
| Jul 13, 9:47 AM CDT | Special Weather Statement | ILX | 43 min |
| Jul 13, 9:59 AM CDT | Severe Thunderstorm Warning | ILX | 31 min |
| Jul 13, 4:01 PM CDT | Tornado Watch | SPC | 7 hr |
| Jul 13, 6:59 PM CDT | Mesoscale Discussion | SPC | 91 min |
| Jul 13, 10:22 PM CDT | Mesoscale Discussion | SPC | 53 min |
| Jul 16, 4:06 AM CDT | Flash Flood Watch | ILX | 21 hr |
| Jul 16, 4:55 PM CDT | Severe Thunderstorm Watch | SPC | 7 hr |
| Jul 16, 7:58 PM CDT | Mesoscale Discussion | SPC | 92 min |
| Jul 16, 9:55 PM CDT | Mesoscale Discussion | SPC | 110 min |
| Jul 17, 10:16 AM CDT | Heat Advisory | ILX | 33 hr |
| Jul 20, 8:33 PM CDT | Areal Flood Advisory | ILX | 3 hr |
| Aug 10, 4:42 AM CDT | Dense Fog Advisory | ILX | 4 hr |
| Aug 18, 6:35 PM CDT | Mesoscale Discussion | SPC | 115 min |
| Sep 1, 8:33 AM CDT | Areal Flood Advisory | ILX | 3 hr |
| Sep 1, 9:34 AM CDT | Flash Flood Warning | ILX | 3 hr |
| Sep 4, 5:54 PM CDT | Special Weather Statement | ILX | 21 min |
| Sep 4, 6:25 PM CDT | Severe Thunderstorm Warning | ILX | 20 min |
| Sep 4, 6:49 PM CDT | Special Weather Statement | ILX | 26 min |
| Sep 4, 7:23 PM CDT | Special Weather Statement | ILX | 37 min |
| Sep 5, 7:45 AM CDT | Areal Flood Advisory | ILX | 3 hr |
| Sep 5, 8:30 AM CDT | Flash Flood Warning | ILX | 4 hr |
| Sep 8, 1:29 PM CDT | Mesoscale Discussion | SPC | 91 min |
| Sep 18, 9:51 PM CDT | Flash Flood Warning | ILX | 3 hr |
| Sep 18, 9:53 PM CDT | Severe Thunderstorm Warning | ILX | 31 min |
| Sep 18, 10:02 PM CDT | Severe Thunderstorm Warning | ILX | 26 min |
| Sep 19, 1:09 AM CDT | Areal Flood Warning | ILX | 6 hr |
| Sep 19, 2:53 AM CDT | Flash Flood Warning | ILX | 4 hr |
| Oct 7, 2:18 AM CDT | Dense Fog Advisory | ILX | 7 hr |
| Oct 15, 2:56 PM CDT | Freeze Watch | ILX | 12 hr |
| Oct 16, 2:45 AM CDT | Freeze Warning | ILX | 30 hr |
| Oct 17, 2:33 PM CDT | Freeze Warning | ILX | 18 hr |
| Oct 19, 3:24 AM CDT | Red Flag Warning | ILX | 16 hr |
| Nov 1, 5:58 AM CST | Dense Fog Advisory | ILX | 3 hr |
| Nov 2, 6:58 AM CST | Dense Fog Advisory | ILX | 3 hr |
| Nov 2, 7:59 PM CST | Dense Fog Advisory | ILX | 14 hr |
| Nov 3, 7:16 PM CST | Dense Fog Advisory | ILX | 15 hr |
| Nov 10, 2:12 AM CST | Dense Fog Advisory | ILX | 7 hr |
| Nov 10, 3:41 PM CST | Wind Advisory | ILX | 50 hr |
| Nov 20, 3:16 AM CST | Winter Weather Advisory | ILX | 36 hr |
| Dec 4, 1:52 AM CST | Dense Fog Advisory | ILX | 11 hr |
| Dec 4, 5:53 PM CST | Dense Fog Advisory | ILX | 18 hr |
| Dec 6, 9:24 PM CST | Dense Fog Advisory | ILX | 23 hr |
| Dec 12, 7:07 AM CST | Dense Fog Advisory | ILX | 4 hr |
| Dec 14, 1:04 AM CST | Special Weather Statement | ILX | 41 min |
| Dec 23, 9:13 AM CST | Tornado Watch | SPC | 8 hr |
| Dec 23, 2:10 PM CST | Wind Advisory | ILX | 9 hr |
| Dec 25, 3:27 AM CST | Flash Flood Watch | ILX | 5 days |
| Dec 26, 11:43 AM CST | Areal Flood Advisory | ILX | 4 hr |
| Dec 26, 12:03 PM CST | Areal Flood Advisory | ILX | 3 hr |
| Dec 26, 2:56 PM CST | Areal Flood Advisory | ILX | 6 hr |
| Dec 26, 3:07 PM CST | River Flood Warning | ILX | 5 days |
| Dec 26, 10:28 PM CST | Flash Flood Warning | ILX | 8 hr |
| Dec 27, 5:15 AM CST | Areal Flood Warning | ILX | 12 hr |
| Dec 27, 3:15 PM CST | Wind Advisory | ILX | 26 hr |
| Dec 27, 3:51 PM CST | Areal Flood Warning | ILX | 24 hr |
| Dec 28, 3:41 PM CST | Areal Flood Warning | ILX | 48 hr |
| Dec 30, 3:27 PM CST | Areal Flood Warning | ILX | 24 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 archive20142016
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.