Alert archive / Wisconsin / Washington County
Weather alerts in Washington County, Wisconsin, 2023
70 weather alerts in 2023, 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 2023. Tap one for its archive.
- Alerts
- 70
- Warnings
- 18
- Watches
- 11
- Advisories
- 23
- Busiest month
- April18 alerts
- Busiest day
- April 19, 20238 alerts
Over time
By month
Warning verification
How often warnings here had a storm report inside them, and how much warning the reports had.
Washington County, 2023
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| Tornado warnings | 0 | 0 | ||||
| Severe thunderstorm warnings | 8 | 7 | 13% | 9 | 100% | 22 min |
| Flash flood warnings | 1 | 1 | 0% | 3 | 100% | 30 min |
Each office's whole area, 2023
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| NWS Milwaukee, WI: tornado warnings | 13 | 4 | 69% | 26 | 46% | 16 min |
| NWS Milwaukee, WI: severe thunderstorm warnings | 102 | 54 | 47% | 156 | 71% | 23 min |
| NWS Milwaukee, WI: flash flood warnings | 7 | 2 | 71% | 6 | 67% | 23 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, 5:52 PM CST | Dense Fog Advisory | MKX | 11 hr |
| Jan 11, 12:08 AM CST | Dense Fog Advisory | MKX | 3 hr |
| Jan 11, 4:54 AM CST | Winter Weather Advisory | MKX | 4 hr |
| Jan 11, 5:45 PM CST | Dense Fog Advisory | MKX | 4 hr |
| Jan 18, 2:49 AM CST | Winter Weather Advisory | MKX | 30 hr |
| Jan 27, 2:16 PM CST | Winter Weather Advisory | MKX | 37 hr |
| Jan 30, 2:14 PM CST | Wind Chill Advisory | MKX | 20 hr |
| Feb 2, 3:05 AM CST | Wind Chill Advisory | MKX | 32 hr |
| Feb 8, 3:19 AM CST | Winter Weather Advisory | MKX | 39 hr |
| Feb 15, 2:34 AM CST | Winter Storm Watch | MKX | 11 hr |
| Feb 15, 1:57 PM CST | Winter Storm Warning | MKX | 34 hr |
| Feb 20, 2:53 PM CST | Winter Storm Watch | MKX | 23 hr |
| Feb 21, 1:53 PM CST | Winter Storm Warning | MKX | 46 hr |
| Feb 22, 3:27 PM CST | Mesoscale Discussion | SPC | 4 hr |
| Feb 27, 8:36 AM CST | Areal Flood Advisory | MKX | 4 hr |
| Feb 27, 12:44 PM CST | Areal Flood Warning | MKX | 6 hr |
| Mar 8, 3:31 AM CST | Winter Storm Watch | MKX | 11 hr |
| Mar 8, 2:12 PM CST | Winter Weather Advisory | MKX | 43 hr |
| Mar 9, 3:18 AM CST | Winter Storm Warning | MKX | 33 hr |
| Mar 24, 2:47 AM CDT | Winter Weather Advisory | MKX | 32 hr |
| Mar 24, 2:38 PM CDT | Winter Storm Warning | MKX | 25 hr |
| Mar 25, 3:47 AM CDT | Mesoscale Discussion | SPC | 4 hr |
| Mar 25, 8:54 AM CDT | Mesoscale Discussion | SPC | 4 hr |
| Mar 31, 8:49 PM CDT | Special Weather Statement | MKX | 41 min |
| Apr 4, 12:41 PM CDT | Flood Watch | MKX | 15 hr |
| Apr 4, 10:59 PM CDT | Severe Thunderstorm Warning | MKX | 46 min |
| Apr 11, 2:45 PM CDT | Fire Weather Watch | MKX | 12 hr |
| Apr 12, 3:11 AM CDT | Red Flag Warning | MKX | 17 hr |
| Apr 12, 2:30 PM CDT | Fire Weather Watch | MKX | 13 hr |
| Apr 13, 3:03 AM CDT | Red Flag Warning | MKX | 17 hr |
| Apr 19, 2:39 PM CDT | Severe Thunderstorm Warning | MKX | 36 min |
| Apr 19, 2:42 PM CDT | Mesoscale Discussion | SPC | 2 hr |
| Apr 19, 3:06 PM CDT | Severe Thunderstorm Warning | MKX | 39 min |
| Apr 19, 3:30 PM CDT | Areal Flood Advisory | MKX | 3 hr |
| Apr 19, 3:32 PM CDT | Severe Thunderstorm Warning | MKX | 43 min |
| Apr 19, 4:00 PM CDT | Flash Flood Warning | MKX | 3 hr |
| Apr 19, 4:45 PM CDT | Severe Thunderstorm Warning | MKX | 30 min |
| Apr 19, 5:08 PM CDT | Severe Thunderstorm Warning | MKX | 22 min |
| Apr 20, 1:50 PM CDT | Mesoscale Discussion | SPC | 85 min |
| Apr 20, 2:06 PM CDT | Tornado Watch | SPC | 6 hr |
| Apr 20, 5:23 PM CDT | Mesoscale Discussion | SPC | 97 min |
| May 9, 1:52 AM CDT | Dense Fog Advisory | MKX | 7 hr |
| May 31, 2:10 PM CDT | Special Weather Statement | MKX | 35 min |
| Jul 5, 12:49 PM CDT | Mesoscale Discussion | SPC | 116 min |
| Jul 16, 10:10 PM CDT | Special Weather Statement | MKX | 35 min |
| Jul 28, 6:27 PM CDT | Severe Thunderstorm Watch | SPC | 6 hr |
| Jul 28, 9:44 PM CDT | Mesoscale Discussion | SPC | 2 hr |
| Jul 28, 10:04 PM CDT | Severe Thunderstorm Warning | MKX | 56 min |
| Jul 28, 10:26 PM CDT | Severe Thunderstorm Warning | MKX | 49 min |
| Aug 3, 8:05 PM CDT | Special Weather Statement | MKX | 55 min |
| Aug 11, 6:42 PM CDT | Mesoscale Discussion | SPC | 63 min |
| Aug 11, 7:08 PM CDT | Severe Thunderstorm Watch | SPC | 5 hr |
| Aug 11, 9:18 PM CDT | Special Weather Statement | MKX | 27 min |
| Aug 11, 9:31 PM CDT | Special Weather Statement | MKX | 44 min |
| Aug 13, 2:09 PM CDT | Flood Watch | MKX | 33 hr |
| Aug 14, 12:27 PM CDT | Areal Flood Advisory | MKX | 3 hr |
| Aug 14, 2:19 PM CDT | Areal Flood Advisory | MKX | 4 hr |
| Aug 20, 2:15 PM CDT | Excessive Heat Watch | MKX | 61 hr |
| Aug 22, 3:20 AM CDT | Excessive Heat Warning | MKX | 64 hr |
| Aug 24, 2:46 PM CDT | Mesoscale Discussion | SPC | 119 min |
| Sep 6, 4:37 PM CDT | Special Weather Statement | MKX | 38 min |
| Oct 8, 2:10 PM CDT | Frost Advisory | MKX | 19 hr |
| Oct 17, 12:18 AM CDT | Frost Advisory | MKX | 7 hr |
| Oct 19, 7:00 AM CDT | Dense Fog Advisory | MKX | 2 hr |
| Oct 21, 2:32 PM CDT | Frost Advisory | MKX | 18 hr |
| Oct 23, 4:26 PM CDT | Special Weather Statement | MKX | 34 min |
| Oct 29, 2:43 AM CDT | Freeze Warning | MKX | 31 hr |
| Dec 23, 1:02 AM CST | Dense Fog Advisory | MKX | 10 hr |
| Dec 23, 11:04 AM CST | Dense Fog Advisory | MKX | 22 hr |
| Dec 30, 6:04 PM CST | Winter Weather Advisory | MKX | 18 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 archive20222024
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.