Alert archive / Wisconsin / Sheboygan County
Weather alerts in Sheboygan County, Wisconsin, 2011
91 weather alerts in 2011, from the National Weather Service and the Storm Prediction Center. An alert counts here when it covered this county.
Sheboygan County and its neighbors
Each county as a circle sized by its count in 2011. Tap one for its archive.
- Alerts
- 91
- Warnings
- 10
- Watches
- 18
- Advisories
- 44
- Busiest month
- July16 alerts
- Busiest day
- July 18, 20115 alerts
Over time
By month
Warning verification
How often warnings here had a storm report inside them, and how much warning the reports had.
Sheboygan County, 2011
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| Tornado warnings | 0 | 0 | ||||
| Severe thunderstorm warnings | 6 | 2 | 67% | 2 | 50% | 14 min |
| Flash flood warnings | 0 | 0 |
Each office's whole area, 2011
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| NWS Milwaukee, WI: tornado warnings | 11 | 5 | 55% | 14 | 71% | 9 min |
| NWS Milwaukee, WI: severe thunderstorm warnings | 129 | 69 | 47% | 245 | 81% | 24 min |
| NWS Milwaukee, WI: flash flood warnings | 2 | 0 | 100% | 0 |
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 |
|---|---|---|---|
| Dec 31, 9:08 PM CST | Dense Fog Advisory | MKX | 3 hr |
| Jan 11, 3:34 AM CST | Winter Weather Advisory | MKX | 16 hr |
| Jan 16, 3:11 PM CST | Winter Weather Advisory | MKX | 33 hr |
| Jan 19, 3:03 PM CST | Wind Chill Advisory | MKX | 43 hr |
| Jan 28, 3:30 AM CST | Winter Weather Advisory | MKX | 18 hr |
| Jan 28, 11:03 PM CST | Winter Weather Advisory | MKX | 6 hr |
| Jan 30, 4:01 AM CST | Winter Storm Watch | MKX | 49 hr |
| Jan 30, 12:25 PM CST | Blizzard Watch | MKX | 27 hr |
| Jan 30, 12:25 PM CST | Winter Weather Advisory | MKX | 51 hr |
| Jan 31, 4:27 AM CST | Winter Weather Advisory | MKX | 35 hr |
| Jan 31, 3:31 PM CST | Blizzard Warning | MKX | 43 hr |
| Jan 31, 3:47 PM CST | Lakeshore Flood Watch | MKX | 18 hr |
| Feb 1, 9:23 AM CST | Lakeshore Flood Advisory | MKX | 22 hr |
| Feb 2, 2:18 PM CST | Wind Chill Advisory | MKX | 20 hr |
| Feb 8, 3:54 AM CST | Wind Chill Advisory | MKX | 30 hr |
| Feb 9, 3:07 PM CST | Wind Chill Advisory | MKX | 19 hr |
| Feb 16, 1:02 PM CST | Dense Fog Advisory | MKX | 19 hr |
| Feb 18, 3:54 AM CST | Wind Advisory | MKX | 14 hr |
| Feb 18, 2:57 PM CST | Winter Storm Watch | MKX | 19 hr |
| Feb 19, 9:49 AM CST | Winter Storm Warning | MKX | 42 hr |
| Feb 20, 11:33 AM CST | Winter Weather Advisory | MKX | 42 hr |
| Mar 8, 3:35 PM CST | Winter Weather Advisory | MKX | 21 hr |
| Mar 22, 3:41 AM CDT | Winter Weather Advisory | MKX | 39 hr |
| Apr 3, 8:54 PM CDT | Severe Thunderstorm Watch | SPC | 5 hr |
| Apr 3, 11:23 PM CDT | Severe Thunderstorm Warning | MKX | 52 min |
| Apr 7, 7:50 PM CDT | Dense Fog Advisory | MKX | 4 hr |
| Apr 10, 6:32 AM CDT | Dense Fog Advisory | MKX | 3 hr |
| Apr 10, 8:55 PM CDT | Mesoscale Discussion | SPC | 95 min |
| Apr 14, 3:08 PM CDT | Wind Advisory | MKX | 30 hr |
| Apr 18, 9:45 PM CDT | Winter Weather Advisory | MKX | 24 hr |
| May 11, 3:38 PM CDT | Mesoscale Discussion | SPC | 2 hr |
| May 12, 3:30 AM CDT | Dense Fog Advisory | MKX | 3 hr |
| May 12, 1:41 PM CDT | Severe Thunderstorm Watch | SPC | 5 hr |
| May 15, 3:34 AM CDT | Wind Advisory | MKX | 14 hr |
| May 20, 9:48 PM CDT | Dense Fog Advisory | MKX | 8 hr |
| May 22, 12:00 AM CDT | Dense Fog Advisory | MKX | 7 hr |
| May 22, 1:49 PM CDT | Mesoscale Discussion | SPC | 56 min |
| May 22, 2:04 PM CDT | Tornado Watch | SPC | 9 hr |
| May 22, 6:25 PM CDT | Severe Thunderstorm Warning | MKX | 35 min |
| May 29, 2:47 AM CDT | Dense Fog Advisory | MKX | 7 hr |
| May 29, 8:28 PM CDT | Dense Fog Advisory | MKX | 11 hr |
| May 31, 12:00 PM CDT | Mesoscale Discussion | SPC | 3 hr |
| Jun 1, 3:48 AM CDT | Wind Advisory | MKX | 12 hr |
| Jun 6, 7:00 AM CDT | Severe Thunderstorm Watch | SPC | 5 hr |
| Jun 6, 10:12 AM CDT | Mesoscale Discussion | SPC | 93 min |
| Jun 6, 3:17 PM CDT | Heat Advisory | MKX | 29 hr |
| Jun 8, 11:08 AM CDT | Mesoscale Discussion | SPC | 97 min |
| Jun 8, 4:49 PM CDT | Severe Thunderstorm Watch | SPC | 8 hr |
| Jun 8, 8:43 PM CDT | Mesoscale Discussion | SPC | 92 min |
| Jun 15, 8:27 AM CDT | High Wind Warning | MKX | 83 min |
| Jun 20, 8:10 PM CDT | Dense Fog Advisory | MKX | 16 hr |
| Jun 21, 11:45 AM CDT | Mesoscale Discussion | SPC | 3 hr |
| Jun 21, 12:05 PM CDT | Dense Fog Advisory | MKX | 10 hr |
| Jun 21, 3:47 PM CDT | Severe Thunderstorm Warning | MKX | 43 min |
| Jun 27, 3:44 PM CDT | Mesoscale Discussion | SPC | 91 min |
| Jun 30, 3:50 AM CDT | Heat Advisory | MKX | 41 hr |
| Jul 11, 2:07 AM CDT | Mesoscale Discussion | SPC | 83 min |
| Jul 11, 3:30 AM CDT | Severe Thunderstorm Watch | SPC | 6 hr |
| Jul 11, 5:07 AM CDT | Mesoscale Discussion | SPC | 113 min |
| Jul 11, 5:13 AM CDT | Severe Thunderstorm Warning | MKX | 24 min |
| Jul 16, 3:10 PM CDT | Heat Advisory | MKX | 61 hr |
| Jul 17, 10:27 PM CDT | Severe Thunderstorm Warning | MKX | 78 min |
| Jul 17, 11:06 PM CDT | Mesoscale Discussion | SPC | 54 min |
| Jul 18, 8:05 AM CDT | Severe Thunderstorm Watch | SPC | 4 hr |
| Jul 18, 9:54 AM CDT | Mesoscale Discussion | SPC | 96 min |
| Jul 18, 6:18 PM CDT | Severe Thunderstorm Watch | SPC | 3 hr |
| Jul 18, 9:06 PM CDT | Mesoscale Discussion | SPC | 54 min |
| Jul 19, 3:10 PM CDT | Heat Advisory | MKX | 48 hr |
| Jul 19, 5:43 PM CDT | Severe Thunderstorm Watch | SPC | 7 hr |
| Jul 19, 11:27 PM CDT | Severe Thunderstorm Watch | SPC | 2 hr |
| Jul 23, 6:36 PM CDT | Severe Thunderstorm Watch | SPC | 7 hr |
| Jul 30, 2:56 PM CDT | Mesoscale Discussion | SPC | 2 hr |
| Aug 2, 6:19 AM CDT | Mesoscale Discussion | SPC | 86 min |
| Aug 2, 12:57 PM CDT | Mesoscale Discussion | SPC | 93 min |
| Aug 23, 5:19 PM CDT | Tornado Watch | SPC | 6 hr |
| Aug 23, 8:45 PM CDT | Mesoscale Discussion | SPC | 60 min |
| Aug 23, 9:42 PM CDT | Severe Thunderstorm Warning | MKX | 37 min |
| Sep 1, 4:26 AM CDT | Dense Fog Advisory | MKX | 5 hr |
| Sep 2, 7:50 AM CDT | Severe Thunderstorm Watch | SPC | 3 hr |
| Sep 2, 10:08 AM CDT | Mesoscale Discussion | SPC | 97 min |
| Sep 15, 11:31 AM CDT | Frost Advisory | MKX | 20 hr |
| Sep 28, 3:16 PM CDT | Wind Advisory | MKX | 34 hr |
| Sep 29, 2:57 PM CDT | High Wind Warning | MKX | 13 hr |
| Oct 1, 9:26 AM CDT | Frost Advisory | MKX | 24 hr |
| Oct 18, 3:11 PM CDT | High Wind Watch | MKX | 13 hr |
| Oct 19, 4:10 AM CDT | Wind Advisory | MKX | 29 hr |
| Oct 21, 3:06 PM CDT | Frost Advisory | MKX | 18 hr |
| Oct 27, 3:28 AM CDT | Frost Advisory | MKX | 28 hr |
| Nov 28, 2:37 PM CST | Wind Advisory | MKX | 28 hr |
| Dec 29, 5:38 AM CST | Freezing Rain Advisory | MKX | 3 hr |
| Dec 31, 5:02 AM CST | Freezing Fog Advisory | MKX | 7 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 | 6 |
| Severe Thunderstorm Watch | 11 |
| Tornado Watch | 2 |
| Mesoscale Discussion | 19 |
| Winter | |
| Blizzard Warning | 1 |
| Winter Storm Warning | 1 |
| Blizzard Watch | 1 |
| Winter Storm Watch | 2 |
| Freezing Rain Advisory | 1 |
| Winter Weather Advisory | 10 |
| Heat | |
| Heat Advisory | 4 |
| Cold | |
| Frost Advisory | 4 |
| Wind Chill Advisory | 4 |
| Wind and dust | |
| High Wind Warning | 2 |
| High Wind Watch | 1 |
| Wind Advisory | 7 |
| Fog and smoke | |
| Dense Fog Advisory | 12 |
| Freezing Fog Advisory | 1 |
| Coast and beach | |
| Lakeshore Flood Watch | 1 |
| Lakeshore Flood Advisory | 1 |
The busiest days
Days with the most alerts issued, by UTC date.
Nearby
Alerts in force nowTornadoes on recordForecastThe radar archive20102012
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.