Alert archive / Illinois / Jo Daviess County
Weather alerts in Jo Daviess County, Illinois, 2019
187 weather alerts in 2019, from the National Weather Service and the Storm Prediction Center. An alert counts here when it covered this county.
Jo Daviess County and its neighbors
Each county as a circle sized by its count in 2019. Tap one for its archive.
- Alerts
- 187
- Warnings
- 46
- Watches
- 34
- Advisories
- 42
- Busiest month
- September31 alerts
- Busiest day
- June 30, 201911 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 Jo Daviess County in 2019 had a tornado report inside them.
Jo Daviess County, 2019
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| Tornado warnings | 1 | 0 | 100% | 0 | ||
| Severe thunderstorm warnings | 14 | 10 | 29% | 11 | 55% | 18 min |
| Flash flood warnings | 9 | 6 | 33% | 2 | 100% | 178 min |
Each office's whole area, 2019
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| NWS Quad Cities, IA: tornado warnings | 33 | 14 | 58% | 27 | 67% | 18 min |
| NWS Quad Cities, IA: severe thunderstorm warnings | 167 | 103 | 38% | 314 | 83% | 25 min |
| NWS Quad Cities, IA: flash flood warnings | 67 | 37 | 45% | 68 | 84% | 95 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, 6:39 AM CST | Winter Weather Advisory | DVN | 6 hr |
| Jan 7, 2:50 PM CST | Wind Advisory | DVN | 30 hr |
| Jan 14, 1:06 PM CST | Winter Weather Advisory | DVN | 41 hr |
| Jan 17, 10:05 AM CST | Winter Storm Watch | DVN | 17 hr |
| Jan 17, 1:56 PM CST | Winter Storm Warning | DVN | 44 hr |
| Jan 18, 6:58 PM CST | Mesoscale Discussion | SPC | 6 hr |
| Jan 21, 4:27 AM CST | Winter Storm Watch | DVN | 7 hr |
| Jan 21, 11:55 AM CST | Winter Weather Advisory | DVN | 48 hr |
| Jan 22, 3:32 AM CST | Winter Storm Warning | DVN | 32 hr |
| Jan 22, 2:36 PM CST | Mesoscale Discussion | SPC | 4 hr |
| Jan 23, 2:40 PM CST | Wind Chill Watch | DVN | 12 hr |
| Jan 23, 2:40 PM CST | Winter Weather Advisory | DVN | 30 hr |
| Jan 24, 2:52 AM CST | Wind Chill Advisory | DVN | 32 hr |
| Jan 24, 2:41 PM CST | Wind Chill Warning | DVN | 21 hr |
| Jan 26, 3:10 AM CST | Winter Storm Watch | DVN | 12 hr |
| Jan 26, 3:26 PM CST | Winter Storm Warning | DVN | 42 hr |
| Jan 26, 3:26 PM CST | Winter Weather Advisory | DVN | 51 hr |
| Jan 26, 10:46 PM CST | Wind Chill Advisory | DVN | 10 hr |
| Jan 27, 2:27 PM CST | Wind Chill Watch | DVN | 24 hr |
| Jan 28, 3:01 AM CST | Wind Chill Advisory | DVN | 39 hr |
| Jan 28, 2:19 PM CST | Wind Chill Warning | DVN | 70 hr |
| Feb 2, 2:49 PM CST | Dense Fog Advisory | DVN | 33 hr |
| Feb 4, 2:15 PM CST | Winter Weather Advisory | DVN | 37 hr |
| Feb 5, 1:37 PM CST | Mesoscale Discussion | SPC | 5 hr |
| Feb 6, 3:08 AM CST | Winter Weather Advisory | DVN | 48 hr |
| Feb 6, 3:49 AM CST | Winter Weather Advisory | DVN | 47 hr |
| Feb 7, 6:26 AM CST | Mesoscale Discussion | SPC | 4 hr |
| Feb 8, 3:13 AM CST | Wind Chill Advisory | DVN | 9 hr |
| Feb 10, 3:09 PM CST | Winter Storm Watch | DVN | 12 hr |
| Feb 11, 3:08 AM CST | Winter Storm Warning | DVN | 45 hr |
| Feb 15, 2:18 AM CST | Wind Chill Advisory | DVN | 7 hr |
| Feb 15, 3:08 PM CST | Winter Weather Advisory | DVN | 57 hr |
| Feb 19, 3:46 AM CST | Winter Weather Advisory | DVN | 36 hr |
| Feb 22, 4:16 AM CST | Winter Weather Advisory | DVN | 30 hr |
| Feb 22, 2:53 PM CST | High Wind Watch | DVN | 13 hr |
| Feb 23, 3:30 AM CST | Wind Advisory | DVN | 39 hr |
| Feb 23, 6:23 AM CST | Flash Flood Watch | DVN | 15 hr |
| Feb 23, 6:21 PM CST | Dense Fog Advisory | DVN | 5 hr |
| Feb 23, 7:31 PM CST | Special Weather Statement | DVN | 119 min |
| Feb 23, 9:46 PM CST | High Wind Warning | DVN | 23 hr |
| Feb 24, 9:18 PM CST | Wind Chill Advisory | DVN | 12 hr |
| Feb 26, 8:23 PM CST | Winter Weather Advisory | DVN | 13 hr |
| Mar 3, 3:42 AM CST | Wind Chill Advisory | DVN | 31 hr |
| Mar 9, 3:06 PM CST | Wind Advisory | DVN | 17 hr |
| Mar 11, 3:16 PM CDT | Flood Watch | DVN | 56 hr |
| Mar 13, 11:15 AM CDT | River Flood Warning | DVN | 93 days |
| Mar 14, 12:16 PM CDT | River Flood Watch | DVN | 26 hr |
| Mar 20, 10:38 AM CDT | River Flood Warning | DVN | 53 days |
| Mar 22, 11:12 AM CDT | River Flood Warning | DVN | 49 days |
| Apr 10, 3:13 AM CDT | Wind Advisory | DVN | 40 hr |
| Apr 12, 3:52 AM CDT | Wind Advisory | DVN | 16 hr |
| Apr 17, 5:16 PM CDT | Mesoscale Discussion | SPC | 89 min |
| Apr 22, 10:36 AM CDT | Special Weather Statement | DVN | 24 min |
| Apr 22, 2:42 PM CDT | Mesoscale Discussion | SPC | 2 hr |
| Apr 22, 5:09 PM CDT | Severe Thunderstorm Warning | DVN | 40 min |
| Apr 26, 2:48 PM CDT | Winter Storm Watch | DVN | 13 hr |
| Apr 27, 3:30 AM CDT | Winter Storm Warning | DVN | 10 hr |
| Apr 27, 3:30 AM CDT | Winter Weather Advisory | DVN | 17 hr |
| Apr 27, 11:32 AM CDT | Mesoscale Discussion | SPC | 6 hr |
| Apr 27, 3:39 PM CDT | Freeze Warning | DVN | 17 hr |
| May 3, 5:55 AM CDT | Dense Fog Advisory | DVN | 3 hr |
| May 8, 5:06 PM CDT | Special Weather Statement | DVN | 54 min |
| May 16, 9:33 AM CDT | Special Weather Statement | DVN | 57 min |
| May 16, 7:14 PM CDT | Mesoscale Discussion | SPC | 2 hr |
| May 18, 2:40 AM CDT | Flash Flood Watch | DVN | 24 hr |
| May 18, 10:23 AM CDT | River Flood Warning | DVN | 25 days |
| May 19, 10:18 AM CDT | Special Weather Statement | DVN | 42 min |
| May 21, 10:34 PM CDT | High Wind Warning | DVN | 2 hr |
| May 22, 10:43 AM CDT | River Flood Warning | DVN | 21 days |
| May 24, 3:46 AM CDT | Flash Flood Watch | DVN | 23 hr |
| May 24, 9:14 AM CDT | Special Weather Statement | DVN | 46 min |
| May 24, 9:57 AM CDT | Special Weather Statement | DVN | 48 min |
| May 24, 3:25 PM CDT | Mesoscale Discussion | SPC | 65 min |
| May 24, 6:23 PM CDT | Tornado Watch | SPC | 4 hr |
| May 24, 8:54 PM CDT | Special Weather Statement | DVN | 36 min |
| May 24, 8:57 PM CDT | Mesoscale Discussion | SPC | 2 hr |
| May 27, 12:50 PM CDT | Mesoscale Discussion | SPC | 85 min |
| May 28, 3:45 AM CDT | Flash Flood Watch | DVN | 25 hr |
| May 30, 12:00 AM CDT | Special Weather Statement | DVN | 90 min |
| Jun 1, 5:08 PM CDT | Special Weather Statement | DVN | 22 min |
| Jun 5, 1:56 AM CDT | Special Weather Statement | DVN | 94 min |
| Jun 6, 4:04 PM CDT | Special Weather Statement | DVN | 56 min |
| Jun 6, 4:35 PM CDT | Special Weather Statement | DVN | 25 min |
| Jun 12, 1:19 PM CDT | Special Weather Statement | DVN | 56 min |
| Jun 15, 9:17 PM CDT | Special Weather Statement | DVN | 88 min |
| Jun 24, 12:35 PM CDT | Mesoscale Discussion | SPC | 85 min |
| Jun 24, 7:09 PM CDT | Special Weather Statement | DVN | 36 min |
| Jun 27, 12:23 PM CDT | Severe Thunderstorm Watch | SPC | 6 hr |
| Jun 27, 1:55 PM CDT | Mesoscale Discussion | SPC | 95 min |
| Jun 27, 3:27 PM CDT | Mesoscale Discussion | SPC | 93 min |
| Jun 27, 3:29 PM CDT | Special Weather Statement | DVN | 31 min |
| Jun 30, 3:18 AM CDT | Heat Advisory | DVN | 18 hr |
| Jun 30, 11:43 AM CDT | Severe Thunderstorm Watch | SPC | 6 hr |
| Jun 30, 12:24 PM CDT | Special Weather Statement | DVN | 36 min |
| Jun 30, 12:47 PM CDT | Special Weather Statement | DVN | 28 min |
| Jun 30, 1:13 PM CDT | Special Weather Statement | DVN | 32 min |
| Jun 30, 3:20 PM CDT | Severe Thunderstorm Watch | SPC | 4 hr |
| Jun 30, 4:54 PM CDT | Severe Thunderstorm Warning | DVN | 51 min |
| Jun 30, 5:20 PM CDT | Mesoscale Discussion | SPC | 115 min |
| Jun 30, 5:31 PM CDT | Severe Thunderstorm Warning | DVN | 44 min |
| Jun 30, 5:35 PM CDT | Tornado Warning | DVN | 25 min |
| Jun 30, 5:54 PM CDT | Severe Thunderstorm Warning | DVN | 66 min |
| Jul 2, 8:52 PM CDT | Severe Thunderstorm Warning | DVN | 38 min |
| Jul 9, 5:30 PM CDT | Mesoscale Discussion | SPC | 2 hr |
| Jul 14, 4:22 PM CDT | Special Weather Statement | DVN | 53 min |
| Jul 14, 5:09 PM CDT | Special Weather Statement | DVN | 66 min |
| Jul 14, 5:31 PM CDT | Severe Thunderstorm Warning | DVN | 25 min |
| Jul 15, 3:13 PM CDT | Excessive Heat Watch | DVN | 37 hr |
| Jul 16, 3:29 PM CDT | Excessive Heat Warning | DVN | 4 days |
| Jul 17, 4:00 AM CDT | Flash Flood Watch | DVN | 30 hr |
| Jul 20, 1:59 PM CDT | Mesoscale Discussion | SPC | 2 hr |
| Jul 20, 2:08 PM CDT | Special Weather Statement | DVN | 52 min |
| Jul 20, 2:44 PM CDT | Severe Thunderstorm Warning | DVN | 46 min |
| Jul 20, 2:47 PM CDT | Severe Thunderstorm Watch | SPC | 4 hr |
| Jul 23, 6:36 PM CDT | Special Weather Statement | DVN | 54 min |
| Jul 23, 7:28 PM CDT | Special Weather Statement | DVN | 32 min |
| Aug 5, 10:18 PM CDT | Special Weather Statement | DVN | 57 min |
| Aug 11, 5:08 AM CDT | Special Weather Statement | DVN | 67 min |
| Aug 12, 4:29 AM CDT | Dense Fog Advisory | DVN | 5 hr |
| Aug 14, 12:09 AM CDT | Special Weather Statement | DVN | 51 min |
| Aug 18, 5:05 AM CDT | Special Weather Statement | DVN | 40 min |
| Aug 18, 5:44 AM CDT | Mesoscale Discussion | SPC | 91 min |
| Aug 18, 5:52 AM CDT | Special Weather Statement | DVN | 53 min |
| Aug 18, 6:06 AM CDT | Severe Thunderstorm Watch | SPC | 6 hr |
| Aug 18, 7:40 AM CDT | Mesoscale Discussion | SPC | 2 hr |
| Sep 2, 6:37 PM CDT | Mesoscale Discussion | SPC | 83 min |
| Sep 3, 5:41 AM CDT | Severe Thunderstorm Warning | DVN | 34 min |
| Sep 3, 6:10 AM CDT | Severe Thunderstorm Warning | DVN | 35 min |
| Sep 10, 1:20 AM CDT | Severe Thunderstorm Warning | DVN | 27 min |
| Sep 10, 1:46 AM CDT | Severe Thunderstorm Warning | DVN | 44 min |
| Sep 10, 1:52 AM CDT | Severe Thunderstorm Warning | DVN | 41 min |
| Sep 11, 3:33 PM CDT | Mesoscale Discussion | SPC | 117 min |
| Sep 11, 7:50 PM CDT | Special Weather Statement | DVN | 40 min |
| Sep 11, 10:08 PM CDT | Flash Flood Warning | DVN | 6 hr |
| Sep 12, 1:46 AM CDT | Flash Flood Watch | DVN | 23 hr |
| Sep 12, 1:12 PM CDT | Mesoscale Discussion | SPC | 2 hr |
| Sep 12, 6:04 PM CDT | Mesoscale Discussion | SPC | 116 min |
| Sep 12, 6:40 PM CDT | Severe Thunderstorm Watch | SPC | 7 hr |
| Sep 12, 7:16 PM CDT | Flash Flood Warning | DVN | 5 hr |
| Sep 12, 7:31 PM CDT | Special Weather Statement | DVN | 14 min |
| Sep 12, 8:28 PM CDT | Special Weather Statement | DVN | 47 min |
| Sep 12, 9:12 PM CDT | Flash Flood Warning | DVN | 6 hr |
| Sep 14, 3:01 AM CDT | Flash Flood Watch | DVN | 30 hr |
| Sep 15, 2:22 AM CDT | Special Weather Statement | DVN | 83 min |
| Sep 15, 3:19 AM CDT | Flash Flood Warning | DVN | 4 hr |
| Sep 15, 4:23 AM CDT | Flash Flood Warning | DVN | 3 hr |
| Sep 15, 9:07 PM CDT | Dense Fog Advisory | DVN | 13 hr |
| Sep 19, 6:32 AM CDT | Special Weather Statement | DVN | 43 min |
| Sep 19, 8:13 AM CDT | Special Weather Statement | DVN | 62 min |
| Sep 19, 8:17 AM CDT | Flash Flood Watch | DVN | 7 hr |
| Sep 19, 8:50 AM CDT | Flash Flood Warning | DVN | 6 hr |
| Sep 19, 9:34 AM CDT | Flash Flood Warning | DVN | 6 hr |
| Sep 20, 4:07 AM CDT | Flash Flood Watch | DVN | 63 hr |
| Sep 27, 3:49 PM CDT | Severe Thunderstorm Watch | SPC | 7 hr |
| Sep 30, 11:29 AM CDT | River Flood Watch | DVN | 45 hr |
| Sep 30, 2:39 PM CDT | Flash Flood Watch | DVN | 39 hr |
| Oct 1, 9:19 AM CDT | Special Weather Statement | DVN | 41 min |
| Oct 1, 5:03 PM CDT | Mesoscale Discussion | SPC | 117 min |
| Oct 1, 6:05 PM CDT | Severe Thunderstorm Watch | SPC | 6 hr |
| Oct 1, 7:56 PM CDT | Special Weather Statement | DVN | 49 min |
| Oct 1, 8:08 PM CDT | Severe Thunderstorm Warning | DVN | 30 min |
| Oct 1, 8:09 PM CDT | Severe Thunderstorm Warning | DVN | 34 min |
| Oct 1, 8:54 PM CDT | Mesoscale Discussion | SPC | 96 min |
| Oct 1, 9:08 PM CDT | Flash Flood Warning | DVN | 6 hr |
| Oct 1, 9:39 PM CDT | Flash Flood Warning | DVN | 6 hr |
| Oct 1, 9:49 PM CDT | Special Weather Statement | DVN | 41 min |
| Oct 2, 8:46 AM CDT | River Flood Warning | DVN | 5 days |
| Oct 2, 8:46 AM CDT | River Flood Warning | DVN | 21 days |
| Oct 8, 10:25 AM CDT | River Flood Warning | DVN | 8 days |
| Oct 10, 4:08 AM CDT | Freeze Watch | DVN | 23 hr |
| Oct 11, 3:36 AM CDT | Freeze Warning | DVN | 29 hr |
| Oct 12, 9:16 AM CDT | Wind Advisory | DVN | 9 hr |
| Oct 13, 1:52 PM CDT | Frost Advisory | DVN | 19 hr |
| Oct 19, 8:19 PM CDT | Dense Fog Advisory | DVN | 15 hr |
| Oct 21, 10:48 AM CDT | Wind Advisory | DVN | 28 hr |
| Oct 22, 11:03 AM CDT | River Flood Watch | DVN | 11 hr |
| Oct 30, 12:30 PM CDT | Winter Weather Advisory | DVN | 28 hr |
| Nov 10, 12:49 PM CST | Winter Weather Advisory | DVN | 24 hr |
| Nov 20, 12:18 AM CST | Dense Fog Advisory | DVN | 10 hr |
| Nov 25, 2:47 PM CST | High Wind Watch | DVN | 21 hr |
| Nov 26, 11:21 AM CST | High Wind Warning | DVN | 31 hr |
| Dec 9, 2:02 AM CST | Dense Fog Advisory | DVN | 7 hr |
| Dec 9, 11:31 AM CST | Winter Weather Advisory | DVN | 4 hr |
| Dec 9, 12:57 PM CST | Snow Squall Warning | DVN | 48 min |
| Dec 24, 3:27 AM CST | Dense Fog Advisory | DVN | 7 hr |
| Dec 28, 9:46 AM CST | Dense Fog Advisory | DVN | 10 hr |
| Dec 30, 6:24 AM CST | Special Weather Statement | DVN | 111 min |
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 archive20182020
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.