Alert archive / Wisconsin / La Crosse County
Weather alerts in La Crosse County, Wisconsin, 2012
94 weather alerts in 2012, from the National Weather Service and the Storm Prediction Center. An alert counts here when it covered this county.
La Crosse County and its neighbors
Each county as a circle sized by its count in 2012. Tap one for its archive.
- Alerts
- 94
- Warnings
- 19
- Watches
- 17
- Advisories
- 29
- Busiest month
- May13 alerts
- Busiest day
- May 24, 20126 alerts
Over time
By month
Warning verification
How often warnings here had a storm report inside them, and how much warning the reports had.
La Crosse County, 2012
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| Tornado warnings | 0 | 0 | ||||
| Severe thunderstorm warnings | 7 | 7 | 0% | 15 | 93% | 18 min |
| Flash flood warnings | 0 | 0 |
Each office's whole area, 2012
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| NWS La Crosse, WI: tornado warnings | 3 | 0 | 100% | 2 | 0% | |
| NWS La Crosse, WI: severe thunderstorm warnings | 124 | 96 | 23% | 249 | 77% | 20 min |
| NWS La Crosse, WI: flash flood warnings | 6 | 1 | 83% | 5 | 80% | 34 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 11, 3:39 AM CST | Winter Weather Advisory | ARX | 41 hr |
| Jan 18, 3:41 AM CST | Wind Chill Advisory | ARX | 32 hr |
| Jan 19, 2:56 PM CST | Winter Weather Advisory | ARX | 27 hr |
| Jan 22, 3:18 AM CST | Freezing Rain Advisory | ARX | 12 hr |
| Jan 22, 3:17 PM CST | Winter Weather Advisory | ARX | 24 hr |
| Feb 1, 7:37 PM CST | Dense Fog Advisory | ARX | 40 hr |
| Feb 22, 11:13 AM CST | Winter Storm Watch | ARX | 17 hr |
| Feb 26, 3:36 PM CST | Winter Storm Watch | ARX | 24 hr |
| Feb 27, 3:52 PM CST | Winter Weather Advisory | ARX | 50 hr |
| Feb 28, 2:40 PM CST | Mesoscale Discussion | SPC | 4 hr |
| Mar 15, 5:21 AM CDT | Dense Fog Advisory | ARX | 6 hr |
| Mar 19, 9:01 PM CDT | Severe Thunderstorm Warning | ARX | 44 min |
| Mar 25, 3:35 AM CDT | Dense Fog Advisory | ARX | 6 hr |
| Mar 28, 3:40 PM CDT | Frost Advisory | ARX | 17 hr |
| Apr 4, 3:42 AM CDT | Freeze Watch | ARX | 35 hr |
| Apr 5, 3:39 AM CDT | Freeze Warning | ARX | 28 hr |
| Apr 7, 3:25 PM CDT | Fire Weather Watch | ARX | 13 hr |
| Apr 8, 3:57 AM CDT | Red Flag Warning | ARX | 16 hr |
| Apr 8, 3:17 PM CDT | Freeze Watch | ARX | 12 hr |
| Apr 9, 3:24 AM CDT | Freeze Warning | ARX | 31 hr |
| Apr 10, 11:00 AM CDT | Freeze Warning | ARX | 23 hr |
| Apr 11, 2:30 PM CDT | Freeze Warning | ARX | 18 hr |
| Apr 15, 3:37 PM CDT | Tornado Watch | SPC | 7 hr |
| Apr 20, 3:40 PM CDT | Frost Advisory | ARX | 12 hr |
| Apr 26, 3:12 PM CDT | Frost Advisory | ARX | 17 hr |
| May 2, 7:38 PM CDT | Mesoscale Discussion | SPC | 37 min |
| May 2, 7:47 PM CDT | Severe Thunderstorm Watch | SPC | 5 hr |
| May 3, 7:11 AM CDT | Severe Thunderstorm Warning | ARX | 49 min |
| May 3, 8:43 AM CDT | Mesoscale Discussion | SPC | 92 min |
| May 6, 8:35 PM CDT | River Flood Warning | ARX | 13 hr |
| May 20, 10:52 AM CDT | Mesoscale Discussion | SPC | 113 min |
| May 24, 3:11 AM CDT | Wind Advisory | ARX | 16 hr |
| May 24, 6:33 AM CDT | Mesoscale Discussion | SPC | 57 min |
| May 24, 1:34 PM CDT | Mesoscale Discussion | SPC | 116 min |
| May 24, 2:22 PM CDT | Tornado Watch | SPC | 5 hr |
| May 24, 5:00 PM CDT | Severe Thunderstorm Warning | ARX | 35 min |
| May 24, 5:41 PM CDT | Mesoscale Discussion | SPC | 2 hr |
| May 26, 2:03 PM CDT | Areal Flood Advisory | ARX | 117 min |
| Jun 16, 8:23 PM CDT | Severe Thunderstorm Warning | ARX | 22 min |
| Jun 17, 7:57 PM CDT | Severe Thunderstorm Watch | SPC | 8 hr |
| Jun 17, 10:55 PM CDT | Mesoscale Discussion | SPC | 95 min |
| Jun 18, 1:28 AM CDT | Mesoscale Discussion | SPC | 62 min |
| Jun 18, 11:40 AM CDT | Mesoscale Discussion | SPC | 2 hr |
| Jun 18, 12:24 PM CDT | Severe Thunderstorm Watch | SPC | 8 hr |
| Jun 20, 2:10 PM CDT | Mesoscale Discussion | SPC | 95 min |
| Jun 26, 3:08 PM CDT | Heat Advisory | ARX | 29 hr |
| Jul 2, 4:02 AM CDT | Heat Advisory | ARX | 24 hr |
| Jul 3, 4:03 AM CDT | Excessive Heat Warning | ARX | 5 days |
| Jul 6, 9:33 PM CDT | Mesoscale Discussion | SPC | 57 min |
| Jul 15, 3:36 AM CDT | Heat Advisory | ARX | 65 hr |
| Jul 17, 12:58 PM CDT | Mesoscale Discussion | SPC | 2 hr |
| Jul 18, 11:38 AM CDT | Mesoscale Discussion | SPC | 67 min |
| Jul 18, 12:58 PM CDT | Severe Thunderstorm Watch | SPC | 7 hr |
| Jul 22, 2:32 PM CDT | Mesoscale Discussion | SPC | 88 min |
| Jul 23, 11:13 PM CDT | Mesoscale Discussion | SPC | 92 min |
| Jul 24, 11:37 AM CDT | Heat Advisory | ARX | 33 hr |
| Jul 25, 5:16 PM CDT | Severe Thunderstorm Watch | SPC | 8 hr |
| Jul 25, 7:20 PM CDT | Mesoscale Discussion | SPC | 85 min |
| Aug 1, 1:07 PM CDT | Mesoscale Discussion | SPC | 23 min |
| Aug 1, 10:11 PM CDT | Mesoscale Discussion | SPC | 94 min |
| Aug 3, 10:33 PM CDT | Mesoscale Discussion | SPC | 87 min |
| Aug 4, 1:41 AM CDT | Mesoscale Discussion | SPC | 64 min |
| Aug 16, 12:29 AM CDT | Severe Thunderstorm Warning | ARX | 46 min |
| Aug 16, 3:57 AM CDT | Mesoscale Discussion | SPC | 3 hr |
| Aug 27, 12:06 AM CDT | Dense Fog Advisory | ARX | 8 hr |
| Aug 28, 3:08 PM CDT | Fire Weather Watch | ARX | 24 hr |
| Sep 4, 4:39 AM CDT | Dense Fog Advisory | ARX | 4 hr |
| Sep 4, 1:33 PM CDT | Mesoscale Discussion | SPC | 117 min |
| Sep 4, 3:27 PM CDT | Severe Thunderstorm Watch | SPC | 8 hr |
| Sep 4, 5:56 PM CDT | Severe Thunderstorm Warning | ARX | 64 min |
| Sep 4, 6:39 PM CDT | Mesoscale Discussion | SPC | 66 min |
| Sep 4, 8:30 PM CDT | Mesoscale Discussion | SPC | 60 min |
| Sep 4, 11:16 PM CDT | Severe Thunderstorm Watch | SPC | 4 hr |
| Sep 5, 1:14 AM CDT | Mesoscale Discussion | SPC | 91 min |
| Sep 5, 1:48 AM CDT | Severe Thunderstorm Warning | ARX | 27 min |
| Sep 8, 3:31 PM CDT | Mesoscale Discussion | SPC | 119 min |
| Sep 21, 2:55 PM CDT | Freeze Watch | ARX | 24 hr |
| Sep 22, 3:06 PM CDT | Freeze Warning | ARX | 17 hr |
| Oct 5, 3:46 AM CDT | Frost Advisory | ARX | 24 hr |
| Oct 6, 3:42 AM CDT | Freeze Warning | ARX | 28 hr |
| Oct 23, 3:03 PM CDT | Dense Fog Advisory | ARX | 18 hr |
| Oct 24, 6:38 PM CDT | Mesoscale Discussion | SPC | 2 hr |
| Nov 20, 12:13 AM CST | Dense Fog Advisory | ARX | 12 hr |
| Nov 20, 5:45 PM CST | Dense Fog Advisory | ARX | 18 hr |
| Dec 1, 8:57 PM CST | Dense Fog Advisory | ARX | 17 hr |
| Dec 2, 5:57 PM CST | Dense Fog Advisory | ARX | 15 hr |
| Dec 8, 3:53 AM CST | Winter Weather Advisory | ARX | 44 hr |
| Dec 8, 2:34 PM CST | Winter Storm Warning | ARX | 33 hr |
| Dec 15, 8:39 PM CST | Dense Fog Advisory | ARX | 6 hr |
| Dec 17, 11:50 AM CST | Winter Storm Watch | ARX | 40 hr |
| Dec 19, 4:03 AM CST | Blizzard Warning | ARX | 44 hr |
| Dec 19, 4:03 AM CST | Winter Storm Warning | ARX | 44 hr |
| Dec 20, 3:12 AM CST | Mesoscale Discussion | SPC | 4 hr |
| Dec 28, 9:17 AM CST | Winter Weather Advisory | ARX | 9 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 | 7 |
| Tornado Watch | 2 |
| Mesoscale Discussion | 29 |
| Flooding | |
| River Flood Warning | 1 |
| Areal Flood Advisory | 1 |
| Winter | |
| Blizzard Warning | 1 |
| Winter Storm Warning | 2 |
| Winter Storm Watch | 3 |
| Freezing Rain Advisory | 1 |
| Winter Weather Advisory | 6 |
| Heat | |
| Excessive Heat Warning | 1 |
| Heat Advisory | 4 |
| Cold | |
| Freeze Warning | 6 |
| Freeze Watch | 3 |
| Frost Advisory | 4 |
| Wind Chill Advisory | 1 |
| Wind and dust | |
| Wind Advisory | 1 |
| Fire | |
| Red Flag Warning | 1 |
| Fire Weather Watch | 2 |
| Fog and smoke | |
| Dense Fog Advisory | 11 |
The busiest days
Days with the most alerts issued, by UTC date.
Nearby
Alerts in force nowTornadoes on recordForecastThe radar archive20112013
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.