Alert archive / Wisconsin / Washington County
Weather alerts in Washington County, Wisconsin, 2015
71 weather alerts in 2015, from the National Weather Service and the Storm Prediction Center. An alert counts here when it covered this county.
Washington County and its neighbors
Each county as a circle sized by its count in 2015. Tap one for its archive.
- Alerts
- 71
- Warnings
- 12
- Watches
- 10
- Advisories
- 25
- Busiest month
- July16 alerts
- Busiest day
- July 18, 20157 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 reports fell inside a warning.
Washington County, 2015
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| Tornado warnings | 0 | 1 | 0% | |||
| Severe thunderstorm warnings | 9 | 6 | 33% | 14 | 79% | 12 min |
| Flash flood warnings | 0 | 0 |
Each office's whole area, 2015
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| NWS Milwaukee, WI: tornado warnings | 9 | 2 | 78% | 7 | 29% | 9 min |
| NWS Milwaukee, WI: severe thunderstorm warnings | 74 | 40 | 46% | 194 | 73% | 24 min |
| NWS Milwaukee, WI: flash flood warnings | 6 | 2 | 67% | 7 | 43% | 77 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, 3:30 AM CST | Wind Chill Advisory | MKX | 33 hr |
| Jan 6, 2:59 AM CST | Wind Chill Advisory | MKX | 57 hr |
| Jan 7, 1:17 PM CST | Winter Weather Advisory | MKX | 38 hr |
| Jan 8, 2:12 PM CST | Wind Chill Advisory | MKX | 44 hr |
| Jan 31, 4:17 AM CST | Winter Weather Advisory | MKX | 43 hr |
| Feb 3, 3:37 AM CST | Winter Weather Advisory | MKX | 17 hr |
| Feb 13, 1:58 PM CST | Wind Chill Advisory | MKX | 43 hr |
| Feb 18, 11:32 AM CST | Wind Chill Advisory | MKX | 24 hr |
| Feb 19, 3:00 PM CST | Wind Chill Advisory | MKX | 18 hr |
| Feb 22, 3:12 AM CST | Wind Chill Advisory | MKX | 31 hr |
| Mar 2, 4:07 AM CST | Winter Weather Advisory | MKX | 34 hr |
| Mar 10, 2:55 AM CDT | Dense Fog Advisory | MKX | 9 hr |
| Apr 7, 9:31 PM CDT | Special Weather Statement | MKX | 44 min |
| Apr 8, 11:55 PM CDT | Dense Fog Advisory | MKX | 7 hr |
| Apr 9, 4:46 PM CDT | Mesoscale Discussion | SPC | 89 min |
| Apr 9, 5:15 PM CDT | Severe Thunderstorm Watch | SPC | 4 hr |
| Apr 9, 7:00 PM CDT | Special Weather Statement | MKX | 30 min |
| Apr 9, 10:35 PM CDT | Wind Advisory | MKX | 5 hr |
| May 4, 12:59 AM CDT | Special Weather Statement | MKX | 61 min |
| May 10, 4:40 PM CDT | Dense Fog Advisory | MKX | 16 hr |
| May 12, 3:36 AM CDT | Frost Advisory | MKX | 27 hr |
| May 26, 11:22 AM CDT | Mesoscale Discussion | SPC | 113 min |
| Jun 11, 3:12 PM CDT | Flood Watch | MKX | 11 hr |
| Jun 22, 9:14 AM CDT | Mesoscale Discussion | SPC | 61 min |
| Jun 22, 9:39 AM CDT | Severe Thunderstorm Watch | SPC | 3 hr |
| Jul 7, 12:03 AM CDT | Special Weather Statement | MKX | 57 min |
| Jul 13, 2:41 AM CDT | Severe Thunderstorm Warning | MKX | 34 min |
| Jul 13, 4:14 AM CDT | Severe Thunderstorm Watch | SPC | 6 hr |
| Jul 13, 4:22 AM CDT | Severe Thunderstorm Warning | MKX | 38 min |
| Jul 13, 5:09 AM CDT | Severe Thunderstorm Warning | MKX | 21 min |
| Jul 13, 3:11 PM CDT | Severe Thunderstorm Watch | SPC | 6 hr |
| Jul 13, 6:09 PM CDT | Mesoscale Discussion | SPC | 66 min |
| Jul 13, 8:08 PM CDT | Special Weather Statement | MKX | 22 min |
| Jul 17, 2:16 PM CDT | Heat Advisory | MKX | 21 hr |
| Jul 18, 3:56 AM CDT | Severe Thunderstorm Watch | SPC | 4 hr |
| Jul 18, 5:24 AM CDT | Mesoscale Discussion | SPC | 96 min |
| Jul 18, 5:47 AM CDT | Special Weather Statement | MKX | 58 min |
| Jul 18, 12:31 PM CDT | Mesoscale Discussion | SPC | 119 min |
| Jul 18, 1:31 PM CDT | Tornado Watch | SPC | 5 hr |
| Jul 18, 1:49 PM CDT | Special Weather Statement | MKX | 41 min |
| Jul 18, 2:24 PM CDT | Severe Thunderstorm Warning | MKX | 51 min |
| Aug 2, 2:00 PM CDT | Mesoscale Discussion | SPC | 2 hr |
| Aug 2, 2:59 PM CDT | Severe Thunderstorm Watch | SPC | 7 hr |
| Aug 2, 5:52 PM CDT | Severe Thunderstorm Warning | MKX | 38 min |
| Aug 2, 6:31 PM CDT | Severe Thunderstorm Warning | MKX | 29 min |
| Aug 2, 6:48 PM CDT | Severe Thunderstorm Warning | MKX | 42 min |
| Aug 2, 6:54 PM CDT | Areal Flood Advisory | MKX | 2 hr |
| Aug 10, 11:10 AM CDT | Special Weather Statement | MKX | 35 min |
| Aug 10, 11:27 AM CDT | Severe Thunderstorm Warning | MKX | 33 min |
| Aug 14, 5:43 PM CDT | Special Weather Statement | MKX | 32 min |
| Aug 14, 6:47 PM CDT | Special Weather Statement | MKX | 28 min |
| Aug 14, 6:54 PM CDT | Severe Thunderstorm Warning | MKX | 31 min |
| Sep 7, 3:35 AM CDT | Special Weather Statement | MKX | 40 min |
| Sep 8, 9:17 AM CDT | Areal Flood Advisory | MKX | 3 hr |
| Sep 26, 9:14 PM CDT | Dense Fog Advisory | MKX | 9 hr |
| Oct 15, 3:00 PM CDT | Freeze Watch | MKX | 12 hr |
| Oct 15, 4:29 PM CDT | Special Weather Statement | MKX | 31 min |
| Oct 16, 3:04 AM CDT | Freeze Warning | MKX | 30 hr |
| Nov 5, 11:34 PM CST | Special Weather Statement | MKX | 41 min |
| Nov 10, 3:10 PM CST | Wind Advisory | MKX | 51 hr |
| Nov 19, 9:01 AM CST | Wind Advisory | MKX | 9 hr |
| Nov 20, 4:12 AM CST | Winter Storm Warning | MKX | 35 hr |
| Dec 6, 9:14 PM CST | Dense Fog Advisory | MKX | 9 hr |
| Dec 10, 11:16 AM CST | Special Weather Statement | MKX | 14 min |
| Dec 12, 12:11 PM CST | Dense Fog Advisory | MKX | 21 hr |
| Dec 23, 3:49 AM CST | Wind Advisory | MKX | 26 hr |
| Dec 23, 7:10 PM CST | Special Weather Statement | MKX | 35 min |
| Dec 26, 3:13 PM CST | Winter Storm Watch | MKX | 25 hr |
| Dec 27, 3:51 PM CST | Winter Storm Warning | MKX | 38 hr |
| Dec 28, 12:13 PM CST | Mesoscale Discussion | SPC | 5 hr |
| Dec 28, 6:00 PM CST | Mesoscale Discussion | SPC | 5 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 | 9 |
| Severe Thunderstorm Watch | 6 |
| Tornado Watch | 1 |
| Mesoscale Discussion | 9 |
| Special Weather Statement | 15 |
| Flooding | |
| Flood Watch | 1 |
| Areal Flood Advisory | 2 |
| Winter | |
| Winter Storm Warning | 2 |
| Winter Storm Watch | 1 |
| Winter Weather Advisory | 4 |
| Heat | |
| Heat Advisory | 1 |
| Cold | |
| Freeze Warning | 1 |
| Freeze Watch | 1 |
| Frost Advisory | 1 |
| Wind Chill Advisory | 7 |
| Wind and dust | |
| Wind Advisory | 4 |
| Fog and smoke | |
| Dense Fog Advisory | 6 |
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.