Alert archive / Illinois / Stephenson County
Weather alerts in Stephenson County, Illinois, 2017
112 weather alerts in 2017, from the National Weather Service and the Storm Prediction Center. An alert counts here when it covered this county.
Stephenson County and its neighbors
Each county as a circle sized by its count in 2017. Tap one for its archive.
- Alerts
- 112
- Warnings
- 24
- Watches
- 15
- Advisories
- 31
- Busiest month
- July27 alerts
- Busiest day
- March 7, 20175 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, 10:07 AM CST | Freezing Rain Advisory | DVN | 11 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 20, 3:14 PM CST | Dense Fog Advisory | DVN | 21 hr |
| Jan 21, 3:50 PM CST | Dense Fog Advisory | DVN | 19 hr |
| Jan 22, 3:59 AM CST | River Flood Warning | DVN | 5 days |
| Feb 6, 9:10 PM CST | Dense Fog Advisory | DVN | 15 hr |
| Feb 22, 12:26 AM CST | Dense Fog Advisory | DVN | 10 hr |
| Feb 28, 2:57 PM CST | Tornado Watch | SPC | 7 hr |
| Mar 6, 7:42 PM CST | Mesoscale Discussion | SPC | 63 min |
| Mar 6, 8:52 PM CST | Tornado Watch | SPC | 6 hr |
| Mar 6, 10:39 PM CST | Severe Thunderstorm Warning | DVN | 67 min |
| Mar 7, 3:32 AM CST | Red Flag Warning | DVN | 14 hr |
| Mar 7, 3:37 AM CST | Wind Advisory | DVN | 12 hr |
| Mar 8, 3:18 AM CST | Wind Advisory | DVN | 14 hr |
| Mar 8, 10:21 AM CST | Red Flag Warning | DVN | 8 hr |
| Mar 11, 3:36 PM CST | Winter Storm Watch | DVN | 12 hr |
| Mar 12, 4:27 AM CDT | Winter Weather Advisory | DVN | 33 hr |
| Mar 23, 5:57 PM CDT | Special Weather Statement | DVN | 33 min |
| Mar 23, 6:28 PM CDT | Mesoscale Discussion | SPC | 92 min |
| Mar 26, 5:22 AM CDT | Dense Fog Advisory | DVN | 7 hr |
| Apr 10, 1:53 AM CDT | Mesoscale Discussion | SPC | 2 hr |
| Apr 10, 2:45 AM CDT | Special Weather Statement | DVN | 30 min |
| Apr 10, 3:30 AM CDT | Special Weather Statement | DVN | 45 min |
| Apr 10, 1:48 PM CDT | Severe Thunderstorm Watch | SPC | 8 hr |
| Apr 15, 5:06 PM CDT | Mesoscale Discussion | SPC | 84 min |
| Apr 27, 3:22 AM CDT | Frost Advisory | DVN | 29 hr |
| Apr 29, 4:41 PM CDT | Special Weather Statement | DVN | 79 min |
| Apr 30, 8:24 PM CDT | Special Weather Statement | DVN | 51 min |
| May 2, 3:16 AM CDT | Frost Advisory | DVN | 28 hr |
| May 6, 2:31 PM CDT | Frost Advisory | DVN | 17 hr |
| May 15, 5:52 PM CDT | Mesoscale Discussion | SPC | 113 min |
| May 15, 7:19 PM CDT | Mesoscale Discussion | SPC | 56 min |
| May 15, 7:52 PM CDT | Severe Thunderstorm Watch | SPC | 3 hr |
| May 15, 8:29 PM CDT | Severe Thunderstorm Warning | DVN | 76 min |
| May 17, 3:24 PM CDT | Mesoscale Discussion | SPC | 66 min |
| May 17, 3:44 PM CDT | Tornado Watch | SPC | 9 hr |
| May 17, 5:56 PM CDT | Severe Thunderstorm Warning | DVN | 34 min |
| May 17, 8:05 PM CDT | Severe Thunderstorm Warning | DVN | 55 min |
| May 17, 9:00 PM CDT | Severe Thunderstorm Warning | DVN | 60 min |
| May 23, 8:27 PM CDT | Special Weather Statement | DVN | 33 min |
| May 27, 1:53 AM CDT | Dense Fog Advisory | DVN | 8 hr |
| Jun 12, 7:01 PM CDT | Special Weather Statement | DVN | 59 min |
| Jun 13, 10:42 AM CDT | Heat Advisory | DVN | 9 hr |
| Jun 13, 6:40 PM CDT | Special Weather Statement | DVN | 65 min |
| Jun 14, 12:06 PM CDT | Mesoscale Discussion | SPC | 2 hr |
| Jun 14, 12:40 PM CDT | Severe Thunderstorm Watch | SPC | 7 hr |
| Jun 16, 6:56 PM CDT | Mesoscale Discussion | SPC | 64 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, 5:57 PM CDT | Special Weather Statement | DVN | 33 min |
| Jun 19, 12:44 PM CDT | Mesoscale Discussion | SPC | 3 hr |
| Jun 28, 2:53 PM CDT | Tornado Watch | SPC | 9 hr |
| Jun 28, 6:20 PM CDT | Severe Thunderstorm Warning | DVN | 55 min |
| Jun 28, 7:36 PM CDT | Severe Thunderstorm Warning | DVN | 54 min |
| Jun 28, 7:53 PM CDT | Mesoscale Discussion | SPC | 97 min |
| Jun 28, 8:27 PM CDT | Flash Flood Warning | DVN | 6 hr |
| Jun 28, 9:55 PM CDT | Special Weather Statement | DVN | 35 min |
| Jun 29, 10:52 AM CDT | River Flood Warning | DVN | 3 days |
| Jul 5, 5:56 PM CDT | Special Weather Statement | DVN | 34 min |
| Jul 11, 9:49 PM CDT | Mesoscale Discussion | SPC | 116 min |
| Jul 12, 12:57 AM CDT | Severe Thunderstorm Warning | DVN | 63 min |
| Jul 16, 1:57 AM CDT | Special Weather Statement | DVN | 48 min |
| Jul 19, 5:11 PM CDT | Mesoscale Discussion | SPC | 34 min |
| Jul 19, 5:45 PM CDT | Severe Thunderstorm Watch | SPC | 6 hr |
| Jul 19, 6:42 PM CDT | Severe Thunderstorm Warning | DVN | 78 min |
| Jul 19, 8:19 PM CDT | Mesoscale Discussion | SPC | 86 min |
| Jul 20, 3:03 AM CDT | Special Weather Statement | DVN | 57 min |
| Jul 20, 8:39 AM CDT | River Flood Watch | DVN | 6 days |
| Jul 20, 3:55 PM CDT | Flash Flood Watch | DVN | 41 hr |
| Jul 20, 4:14 PM CDT | River Flood Warning | DVN | 15 days |
| Jul 21, 4:52 PM CDT | Severe Thunderstorm Watch | SPC | 9 hr |
| Jul 21, 5:50 PM CDT | Special Weather Statement | DVN | 40 min |
| Jul 21, 6:15 PM CDT | Severe Thunderstorm Warning | DVN | 45 min |
| Jul 21, 6:28 PM CDT | Mesoscale Discussion | SPC | 92 min |
| Jul 21, 7:51 PM CDT | Flash Flood Warning | DVN | 6 hr |
| Jul 21, 8:35 PM CDT | Mesoscale Discussion | SPC | 115 min |
| Jul 21, 11:10 PM CDT | Severe Thunderstorm Warning | DVN | 65 min |
| Jul 21, 11:23 PM CDT | Mesoscale Discussion | SPC | 67 min |
| Jul 22, 6:05 AM CDT | Areal Flood Warning | DVN | 18 hr |
| Jul 23, 1:03 PM CDT | Mesoscale Discussion | SPC | 2 hr |
| Jul 23, 3:48 PM CDT | Areal Flood Warning | DVN | 48 hr |
| Jul 25, 2:04 PM CDT | Areal Flood Warning | DVN | 24 hr |
| Jul 26, 4:55 PM CDT | Mesoscale Discussion | SPC | 65 min |
| Jul 26, 6:59 PM CDT | Special Weather Statement | DVN | 61 min |
| Jul 26, 7:57 PM CDT | Flash Flood Warning | DVN | 6 hr |
| Aug 3, 11:55 AM CDT | Special Weather Statement | DVN | 65 min |
| Aug 3, 12:13 PM CDT | Mesoscale Discussion | SPC | 2 hr |
| 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, 2:57 PM CDT | Severe Thunderstorm Warning | DVN | 48 min |
| 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 14, 4:28 AM CDT | Dense Fog Advisory | DVN | 6 hr |
| Oct 7, 3:43 PM CDT | Special Weather Statement | DVN | 62 min |
| Oct 14, 3:30 AM CDT | Flash Flood Watch | DVN | 19 hr |
| Oct 25, 2:56 PM CDT | Frost Advisory | DVN | 18 hr |
| Oct 27, 3:39 AM CDT | Freeze Warning | DVN | 53 hr |
| Nov 4, 11:19 PM CDT | Dense Fog Advisory | DVN | 8 hr |
| Nov 12, 9:39 PM CST | Dense Fog Advisory | DVN | 14 hr |
| Dec 4, 9:58 PM CST | Wind Advisory | DVN | 20 hr |
| Dec 24, 10:16 AM CST | Special Weather Statement | DVN | 3 hr |
| Dec 25, 3:19 AM CST | Wind Chill Advisory | DVN | 31 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 | 12 |
| Severe Thunderstorm Watch | 7 |
| Tornado Watch | 4 |
| Mesoscale Discussion | 24 |
| Special Weather Statement | 18 |
| Flooding | |
| Areal Flood Warning | 3 |
| Flash Flood Warning | 3 |
| River Flood Warning | 3 |
| Flash Flood Watch | 2 |
| River Flood Watch | 1 |
| Winter | |
| Winter Storm Watch | 1 |
| Freezing Rain Advisory | 1 |
| Winter Weather Advisory | 4 |
| Heat | |
| Heat Advisory | 1 |
| Cold | |
| Freeze Warning | 1 |
| Frost Advisory | 4 |
| Wind Chill Advisory | 3 |
| Wind and dust | |
| Wind Advisory | 4 |
| Fire | |
| Red Flag Warning | 2 |
| Fog and smoke | |
| Dense Fog Advisory | 14 |
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.