Alert archive / Wisconsin / Winnebago County
Weather alerts in Winnebago County, Wisconsin, 2018
109 weather alerts in 2018, from the National Weather Service and the Storm Prediction Center. An alert counts here when it covered this county.
Winnebago County and its neighbors
Each county as a circle sized by its count in 2018. Tap one for its archive.
- Alerts
- 109
- Warnings
- 19
- Watches
- 13
- Advisories
- 29
- Busiest month
- August25 alerts
- Busiest day
- August 28, 201814 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 Winnebago County in 2018 had a tornado report inside them.
Winnebago County, 2018
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| Tornado warnings | 1 | 0 | 100% | 0 | ||
| Severe thunderstorm warnings | 7 | 7 | 0% | 3 | 100% | 24 min |
| Flash flood warnings | 1 | 0 | 100% | 0 |
Each office's whole area, 2018
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| NWS Green Bay, WI: tornado warnings | 9 | 2 | 78% | 4 | 50% | 4 min |
| NWS Green Bay, WI: severe thunderstorm warnings | 73 | 42 | 42% | 130 | 68% | 22 min |
| NWS Green Bay, WI: flash flood warnings | 3 | 2 | 33% | 3 | 67% | 41 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 3, 2:37 PM CST | Wind Chill Advisory | GRB | 19 hr |
| Jan 4, 3:00 PM CST | Wind Chill Advisory | GRB | 19 hr |
| Jan 10, 2:43 PM CST | Winter Weather Advisory | GRB | 31 hr |
| Jan 14, 4:24 AM CST | Winter Weather Advisory | GRB | 44 hr |
| Jan 21, 2:44 PM CST | Dense Fog Advisory | GRB | 14 hr |
| Feb 2, 2:03 PM CST | Winter Weather Advisory | GRB | 44 hr |
| Feb 4, 12:24 PM CST | Wind Chill Advisory | GRB | 22 hr |
| Feb 18, 4:17 AM CST | Winter Storm Watch | GRB | 24 hr |
| Feb 18, 2:50 PM CST | Winter Weather Advisory | GRB | 47 hr |
| Feb 22, 3:20 AM CST | Winter Weather Advisory | GRB | 30 hr |
| Feb 24, 2:14 PM CST | Wind Advisory | GRB | 25 hr |
| Mar 4, 2:52 PM CST | Winter Weather Advisory | GRB | 54 hr |
| Apr 1, 2:58 PM CDT | Winter Storm Watch | GRB | 24 hr |
| Apr 2, 2:48 PM CDT | Winter Storm Warning | GRB | 12 hr |
| Apr 3, 3:11 AM CDT | Winter Storm Warning | GRB | 28 hr |
| Apr 12, 8:41 AM CDT | Dense Fog Advisory | GRB | 104 min |
| Apr 12, 3:15 PM CDT | Winter Storm Watch | GRB | 37 hr |
| Apr 13, 3:35 PM CDT | Winter Weather Advisory | GRB | 30 hr |
| Apr 14, 12:15 AM CDT | Winter Storm Warning | GRB | 42 hr |
| Apr 14, 5:40 PM CDT | Blizzard Warning | GRB | 24 hr |
| Apr 14, 6:02 PM CDT | Mesoscale Discussion | SPC | 6 hr |
| Apr 15, 5:53 PM CDT | Winter Weather Advisory | GRB | 18 hr |
| Apr 17, 2:18 PM CDT | Winter Weather Advisory | GRB | 20 hr |
| Apr 25, 10:06 AM CDT | River Flood Warning | GRB | 17 days |
| May 1, 9:37 PM CDT | Special Weather Statement | GRB | 83 min |
| May 1, 10:43 PM CDT | Special Weather Statement | GRB | 2 hr |
| May 3, 8:16 PM CDT | Flood Watch | GRB | 7 hr |
| May 4, 3:05 AM CDT | Areal Flood Advisory | GRB | 6 hr |
| May 6, 6:45 AM CDT | River Flood Warning | GRB | 7 hr |
| Jun 2, 5:42 PM CDT | Special Weather Statement | GRB | 48 min |
| Jun 15, 7:29 AM CDT | Special Weather Statement | GRB | 61 min |
| Jun 15, 8:28 PM CDT | Special Weather Statement | GRB | 92 min |
| Jun 16, 4:24 PM CDT | Severe Thunderstorm Warning | GRB | 66 min |
| Jun 17, 10:56 PM CDT | Special Weather Statement | GRB | 49 min |
| Jun 17, 11:48 PM CDT | Special Weather Statement | GRB | 27 min |
| Jun 18, 12:51 AM CDT | Special Weather Statement | GRB | 84 min |
| Jun 18, 2:43 AM CDT | Areal Flood Advisory | GRB | 6 hr |
| Jun 28, 3:14 PM CDT | Heat Advisory | GRB | 52 hr |
| Jun 30, 3:31 AM CDT | Excessive Heat Warning | GRB | 15 hr |
| Jun 30, 4:23 PM CDT | Mesoscale Discussion | SPC | 67 min |
| Jun 30, 4:41 PM CDT | Severe Thunderstorm Watch | SPC | 6 hr |
| Jun 30, 7:16 PM CDT | Special Weather Statement | GRB | 59 min |
| Jun 30, 8:05 PM CDT | Mesoscale Discussion | SPC | 85 min |
| Jul 1, 11:37 AM CDT | Mesoscale Discussion | SPC | 83 min |
| Jul 1, 12:04 PM CDT | Tornado Watch | SPC | 6 hr |
| Jul 1, 1:37 PM CDT | Mesoscale Discussion | SPC | 53 min |
| Jul 1, 1:54 PM CDT | Special Weather Statement | GRB | 51 min |
| Jul 1, 2:06 PM CDT | Severe Thunderstorm Warning | GRB | 39 min |
| Jul 1, 3:18 PM CDT | Mesoscale Discussion | SPC | 87 min |
| Jul 12, 10:40 AM CDT | Special Weather Statement | GRB | 65 min |
| Jul 13, 10:53 AM CDT | Special Weather Statement | GRB | 52 min |
| Jul 13, 3:54 PM CDT | Severe Thunderstorm Watch | SPC | 6 hr |
| Jul 13, 4:03 PM CDT | Special Weather Statement | GRB | 57 min |
| Jul 13, 5:16 PM CDT | Special Weather Statement | GRB | 89 min |
| Jul 13, 6:23 PM CDT | Mesoscale Discussion | SPC | 2 hr |
| Jul 15, 8:46 PM CDT | Special Weather Statement | GRB | 44 min |
| Jul 15, 8:50 PM CDT | Special Weather Statement | GRB | 40 min |
| Jul 20, 2:30 PM CDT | Special Weather Statement | GRB | 75 min |
| Jul 20, 4:31 PM CDT | Special Weather Statement | GRB | 59 min |
| Jul 25, 6:29 PM CDT | Mesoscale Discussion | SPC | 91 min |
| Jul 25, 9:12 PM CDT | Special Weather Statement | GRB | 63 min |
| Jul 25, 9:49 PM CDT | Special Weather Statement | GRB | 56 min |
| Aug 4, 9:06 PM CDT | Special Weather Statement | GRB | 54 min |
| Aug 17, 2:57 PM CDT | Special Weather Statement | GRB | 48 min |
| Aug 17, 4:02 PM CDT | Special Weather Statement | GRB | 58 min |
| Aug 26, 2:15 PM CDT | Flash Flood Watch | GRB | 55 hr |
| Aug 26, 3:51 PM CDT | Mesoscale Discussion | SPC | 84 min |
| Aug 26, 4:42 PM CDT | Severe Thunderstorm Watch | SPC | 4 hr |
| Aug 26, 4:49 PM CDT | Severe Thunderstorm Warning | GRB | 45 min |
| Aug 27, 5:27 PM CDT | Mesoscale Discussion | SPC | 2 hr |
| Aug 27, 6:01 PM CDT | Severe Thunderstorm Watch | SPC | 7 hr |
| Aug 27, 9:40 PM CDT | Tornado Warning | GRB | 35 min |
| Aug 27, 9:59 PM CDT | Severe Thunderstorm Warning | GRB | 38 min |
| Aug 27, 10:34 PM CDT | Mesoscale Discussion | SPC | 116 min |
| Aug 27, 11:09 PM CDT | Areal Flood Advisory | GRB | 6 hr |
| Aug 28, 12:14 PM CDT | Mesoscale Discussion | SPC | 2 hr |
| Aug 28, 1:14 PM CDT | Severe Thunderstorm Watch | SPC | 8 hr |
| Aug 28, 2:03 PM CDT | Special Weather Statement | GRB | 42 min |
| Aug 28, 3:08 PM CDT | Areal Flood Advisory | GRB | 3 hr |
| Aug 28, 3:24 PM CDT | Severe Thunderstorm Warning | GRB | 51 min |
| Aug 28, 3:24 PM CDT | Mesoscale Discussion | SPC | 96 min |
| Aug 28, 3:50 PM CDT | Areal Flood Advisory | GRB | 3 hr |
| Aug 28, 4:03 PM CDT | Severe Thunderstorm Warning | GRB | 42 min |
| Aug 28, 4:53 PM CDT | Flash Flood Warning | GRB | 3 hr |
| Aug 28, 5:55 PM CDT | Areal Flood Advisory | GRB | 3 hr |
| Aug 28, 8:10 PM CDT | River Flood Warning | GRB | 4 days |
| Aug 30, 2:58 PM CDT | Flash Flood Watch | GRB | 37 hr |
| Sep 2, 2:55 PM CDT | Special Weather Statement | GRB | 50 min |
| Sep 3, 10:09 PM CDT | Special Weather Statement | GRB | 36 min |
| Sep 20, 8:20 PM CDT | Mesoscale Discussion | SPC | 115 min |
| Sep 20, 10:45 PM CDT | Mesoscale Discussion | SPC | 60 min |
| Sep 28, 2:55 AM CDT | Frost Advisory | GRB | 30 hr |
| Oct 3, 5:13 PM CDT | Mesoscale Discussion | SPC | 2 hr |
| Oct 3, 9:18 PM CDT | Special Weather Statement | GRB | 42 min |
| Oct 3, 9:22 PM CDT | Mesoscale Discussion | SPC | 113 min |
| Oct 3, 9:59 PM CDT | Special Weather Statement | GRB | 61 min |
| Oct 9, 5:09 PM CDT | Tornado Watch | SPC | 4 hr |
| Oct 9, 5:54 PM CDT | Severe Thunderstorm Warning | GRB | 51 min |
| Oct 9, 6:37 PM CDT | Mesoscale Discussion | SPC | 83 min |
| Oct 9, 7:10 PM CDT | Special Weather Statement | GRB | 50 min |
| Oct 11, 3:30 AM CDT | Freeze Warning | GRB | 29 hr |
| Oct 12, 2:52 PM CDT | Freeze Warning | GRB | 18 hr |
| Nov 8, 2:51 PM CST | Winter Weather Advisory | GRB | 33 hr |
| Nov 9, 2:53 PM CST | Wind Advisory | GRB | 18 hr |
| Dec 1, 3:41 AM CST | Winter Weather Advisory | GRB | 39 hr |
| Dec 11, 2:40 PM CST | Winter Weather Advisory | GRB | 21 hr |
| Dec 12, 9:16 PM CST | Dense Fog Advisory | GRB | 13 hr |
| Dec 30, 2:31 PM CST | Winter Weather Advisory | GRB | 36 hr |
| Dec 31, 11:50 AM CST | Mesoscale Discussion | SPC | 6 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 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.