Alert archive / Wisconsin / Monroe County
Weather alerts in Monroe County, Wisconsin, 2020
95 weather alerts in 2020, from the National Weather Service and the Storm Prediction Center. An alert counts here when it covered this county.
Monroe County and its neighbors
Each county as a circle sized by its count in 2020. Tap one for its archive.
- Alerts
- 95
- Warnings
- 17
- Watches
- 8
- Advisories
- 34
- Busiest month
- August27 alerts
- Busiest day
- August 28, 202010 alerts
Over time
By month
Warning verification
How often warnings here had a storm report inside them, and how much warning the reports had.
Monroe County, 2020
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| Tornado warnings | 0 | 0 | ||||
| Severe thunderstorm warnings | 7 | 4 | 43% | 5 | 60% | 19 min |
| Flash flood warnings | 2 | 1 | 50% | 4 | 100% | 175 min |
Each office's whole area, 2020
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| NWS La Crosse, WI: tornado warnings | 8 | 3 | 63% | 11 | 55% | 9 min |
| NWS La Crosse, WI: severe thunderstorm warnings | 99 | 48 | 52% | 182 | 70% | 22 min |
| NWS La Crosse, WI: flash flood warnings | 12 | 9 | 25% | 34 | 85% | 127 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 8, 2:55 PM CST | Winter Weather Advisory | ARX | 27 hr |
| Jan 13, 2:04 PM CST | Winter Weather Advisory | ARX | 16 hr |
| Jan 14, 1:57 PM CST | Winter Weather Advisory | ARX | 22 hr |
| Jan 15, 3:25 PM CST | Winter Storm Watch | ARX | 21 hr |
| Jan 16, 12:42 PM CST | Winter Weather Advisory | ARX | 53 hr |
| Feb 7, 2:37 AM CST | Winter Storm Watch | ARX | 25 hr |
| Feb 8, 3:49 AM CST | Winter Storm Warning | ARX | 38 hr |
| Feb 9, 6:39 AM CST | Mesoscale Discussion | SPC | 4 hr |
| Feb 9, 10:56 AM CST | Mesoscale Discussion | SPC | 5 hr |
| Feb 12, 4:11 AM CST | Wind Chill Advisory | ARX | 54 hr |
| Feb 16, 3:05 PM CST | Winter Weather Advisory | ARX | 33 hr |
| Feb 17, 3:27 PM CST | Mesoscale Discussion | SPC | 4 hr |
| Mar 28, 4:34 PM CDT | Special Weather Statement | ARX | 71 min |
| Apr 7, 3:31 AM CDT | Dense Fog Advisory | ARX | 6 hr |
| Apr 8, 12:48 AM CDT | Dense Fog Advisory | ARX | 8 hr |
| Apr 11, 2:44 PM CDT | Winter Weather Advisory | ARX | 39 hr |
| May 2, 2:29 PM CDT | Fire Weather Watch | ARX | 14 hr |
| May 3, 4:27 AM CDT | Red Flag Warning | ARX | 15 hr |
| May 6, 1:50 PM CDT | Frost Advisory | ARX | 17 hr |
| May 7, 9:48 AM CDT | Freeze Watch | ARX | 17 hr |
| May 7, 9:48 AM CDT | Freeze Warning | ARX | 23 hr |
| May 8, 3:13 AM CDT | Freeze Warning | ARX | 29 hr |
| May 10, 2:51 AM CDT | Freeze Warning | ARX | 29 hr |
| May 11, 2:41 PM CDT | Freeze Warning | ARX | 17 hr |
| May 12, 2:10 PM CDT | Frost Advisory | ARX | 18 hr |
| May 26, 6:55 PM CDT | Special Weather Statement | ARX | 20 min |
| May 26, 7:16 PM CDT | Special Weather Statement | ARX | 29 min |
| May 28, 8:16 AM CDT | Areal Flood Advisory | ARX | 6 hr |
| May 30, 1:38 PM CDT | Frost Advisory | ARX | 18 hr |
| Jun 2, 4:39 PM CDT | Severe Thunderstorm Watch | SPC | 5 hr |
| Jun 2, 5:32 PM CDT | Mesoscale Discussion | SPC | 118 min |
| Jun 2, 6:25 PM CDT | Severe Thunderstorm Warning | ARX | 50 min |
| Jun 2, 6:32 PM CDT | Severe Thunderstorm Warning | ARX | 43 min |
| Jun 8, 3:21 AM CDT | Flash Flood Watch | ARX | 47 hr |
| Jun 11, 3:26 PM CDT | Mesoscale Discussion | SPC | 94 min |
| Jun 21, 9:09 PM CDT | Mesoscale Discussion | SPC | 2 hr |
| Jun 26, 12:38 PM CDT | Mesoscale Discussion | SPC | 2 hr |
| Jun 29, 1:28 PM CDT | Mesoscale Discussion | SPC | 92 min |
| Jul 6, 6:44 PM CDT | Special Weather Statement | ARX | 31 min |
| Jul 6, 7:00 PM CDT | Special Weather Statement | ARX | 45 min |
| Jul 6, 7:07 PM CDT | Severe Thunderstorm Warning | ARX | 38 min |
| Jul 6, 7:37 PM CDT | Special Weather Statement | ARX | 23 min |
| Jul 7, 1:23 PM CDT | Mesoscale Discussion | SPC | 2 hr |
| Jul 7, 3:06 PM CDT | Areal Flood Advisory | ARX | 114 min |
| Jul 7, 3:38 PM CDT | Heat Advisory | ARX | 27 hr |
| Jul 9, 2:51 PM CDT | Mesoscale Discussion | SPC | 114 min |
| Jul 14, 3:14 PM CDT | Mesoscale Discussion | SPC | 2 hr |
| Jul 14, 4:11 PM CDT | Severe Thunderstorm Watch | SPC | 7 hr |
| Jul 14, 7:01 PM CDT | Special Weather Statement | ARX | 89 min |
| Jul 16, 2:14 AM CDT | Dense Fog Advisory | ARX | 7 hr |
| Jul 17, 2:35 AM CDT | Heat Advisory | ARX | 41 hr |
| Jul 18, 5:46 AM CDT | Special Weather Statement | ARX | 29 min |
| Jul 21, 6:13 PM CDT | Mesoscale Discussion | SPC | 62 min |
| Jul 25, 2:44 AM CDT | Heat Advisory | ARX | 17 hr |
| Aug 8, 11:15 AM CDT | Severe Thunderstorm Warning | ARX | 30 min |
| Aug 8, 11:59 AM CDT | Special Weather Statement | ARX | 31 min |
| Aug 8, 5:00 PM CDT | Mesoscale Discussion | SPC | 2 hr |
| Aug 8, 8:01 PM CDT | Severe Thunderstorm Warning | ARX | 44 min |
| Aug 9, 10:59 PM CDT | Mesoscale Discussion | SPC | 3 hr |
| Aug 10, 6:42 AM CDT | Mesoscale Discussion | SPC | 2 hr |
| Aug 10, 6:51 AM CDT | Severe Thunderstorm Warning | ARX | 54 min |
| Aug 16, 4:02 AM CDT | Special Weather Statement | ARX | 58 min |
| Aug 24, 3:21 AM CDT | Heat Advisory | ARX | 16 hr |
| Aug 24, 4:00 PM CDT | Mesoscale Discussion | SPC | 90 min |
| Aug 24, 10:55 PM CDT | Mesoscale Discussion | SPC | 2 hr |
| Aug 25, 2:48 AM CDT | Heat Advisory | ARX | 16 hr |
| Aug 25, 7:08 AM CDT | Severe Thunderstorm Warning | ARX | 67 min |
| Aug 26, 2:53 AM CDT | Heat Advisory | ARX | 16 hr |
| Aug 27, 5:30 PM CDT | Special Weather Statement | ARX | 30 min |
| Aug 27, 6:01 PM CDT | Special Weather Statement | ARX | 29 min |
| Aug 27, 6:27 PM CDT | Special Weather Statement | ARX | 48 min |
| Aug 27, 7:35 PM CDT | Flash Flood Watch | ARX | 17 hr |
| Aug 27, 10:14 PM CDT | Special Weather Statement | ARX | 31 min |
| Aug 27, 10:43 PM CDT | Special Weather Statement | ARX | 47 min |
| Aug 28, 3:28 AM CDT | Flash Flood Warning | ARX | 4 hr |
| Aug 28, 5:58 AM CDT | Flash Flood Warning | ARX | 4 hr |
| Aug 28, 6:59 AM CDT | Mesoscale Discussion | SPC | 91 min |
| Aug 28, 7:07 AM CDT | Areal Flood Warning | ARX | 6 hr |
| Aug 28, 7:35 AM CDT | Special Weather Statement | ARX | 70 min |
| Aug 28, 8:33 AM CDT | Special Weather Statement | ARX | 72 min |
| Aug 28, 12:41 PM CDT | Areal Flood Warning | ARX | 20 hr |
| Sep 10, 2:24 PM CDT | Frost Advisory | ARX | 19 hr |
| Sep 17, 11:15 AM CDT | Frost Advisory | ARX | 21 hr |
| Sep 18, 1:37 PM CDT | Frost Advisory | ARX | 18 hr |
| Sep 25, 12:32 AM CDT | Dense Fog Advisory | ARX | 7 hr |
| Oct 1, 3:56 AM CDT | Frost Advisory | ARX | 28 hr |
| Oct 2, 2:08 PM CDT | Frost Advisory | ARX | 18 hr |
| Oct 3, 1:44 PM CDT | Frost Advisory | ARX | 18 hr |
| Oct 12, 8:01 AM CDT | Special Weather Statement | ARX | 29 min |
| Oct 31, 11:48 PM CDT | Wind Advisory | ARX | 15 hr |
| Nov 14, 2:06 PM CST | Wind Advisory | ARX | 28 hr |
| Nov 23, 2:19 PM CST | Winter Weather Advisory | ARX | 30 hr |
| Nov 24, 7:49 PM CST | Dense Fog Advisory | ARX | 12 hr |
| Dec 27, 4:11 AM CST | Winter Weather Advisory | ARX | 15 hr |
| Dec 28, 3:45 AM CST | Winter Weather Advisory | ARX | 53 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 | 7 |
| Severe Thunderstorm Watch | 2 |
| Mesoscale Discussion | 18 |
| Special Weather Statement | 18 |
| Flooding | |
| Areal Flood Warning | 2 |
| Flash Flood Warning | 2 |
| Flash Flood Watch | 2 |
| Areal Flood Advisory | 2 |
| Winter | |
| Winter Storm Warning | 1 |
| Winter Storm Watch | 2 |
| Winter Weather Advisory | 9 |
| Heat | |
| Heat Advisory | 6 |
| Cold | |
| Freeze Warning | 4 |
| Freeze Watch | 1 |
| Frost Advisory | 9 |
| Wind Chill Advisory | 1 |
| Wind and dust | |
| Wind Advisory | 2 |
| Fire | |
| Red Flag Warning | 1 |
| Fire Weather Watch | 1 |
| Fog and smoke | |
| Dense Fog Advisory | 5 |
The busiest days
Days with the most alerts issued, by UTC date.
Nearby
Alerts in force nowTornadoes on recordForecastThe radar archive20192021
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.