Alert archive / Wisconsin / Grant County
Weather alerts in Grant County, Wisconsin, 2026
128 weather alerts in 2026, from the National Weather Service and the Storm Prediction Center. An alert counts here when it covered this county.
Grant County and its neighbors
Each county as a circle sized by its count in 2026. Tap one for its archive.
- Alerts
- 128
- Warnings
- 39
- Watches
- 28
- Advisories
- 21
- Busiest month
- April36 alerts
- Busiest day
- April 14, 202613 alerts
Over time
By month
Warning verification
How often warnings here had a storm report inside them, and how much warning the reports had.
1 of 5 tornado warnings covering Grant County in 2026 had a tornado report inside them; 1 of 2 tornado reports fell inside a warning, on average 12 minutes after it went out.
Grant County, 2026
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| Tornado warnings | 5 | 1 | 80% | 2 | 50% | 12 min |
| Severe thunderstorm warnings | 25 | 13 | 48% | 29 | 83% | 33 min |
| Flash flood warnings | 0 | 0 |
Each office's whole area, 2026
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| NWS La Crosse, WI: tornado warnings | 59 | 16 | 73% | 34 | 76% | 22 min |
| NWS La Crosse, WI: severe thunderstorm warnings | 200 | 89 | 55% | 240 | 76% | 23 min |
| NWS La Crosse, WI: flash flood warnings | 16 | 7 | 56% | 21 | 76% | 142 min |
An office's figures cover every county it serves, including across state lines.
The year is still running; reports filed late and damage surveys can still change these figures.
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 7, 1:21 AM CST | Dense Fog Advisory | ARX | 11 hr |
| Jan 17, 1:38 PM CST | Cold Weather Advisory | ARX | 68 hr |
| Jan 20, 2:50 AM CST | Winter Weather Advisory | ARX | 24 hr |
| Jan 20, 12:47 PM CST | Extreme Cold Watch | ARX | 46 hr |
| Jan 21, 3:03 AM CST | Winter Weather Advisory | ARX | 19 hr |
| Jan 21, 11:56 AM CST | Extreme Cold Warning | ARX | 48 hr |
| Jan 22, 10:24 AM CST | Cold Weather Advisory | ARX | 47 hr |
| Jan 25, 1:32 AM CST | Cold Weather Advisory | ARX | 34 hr |
| Feb 17, 3:05 PM CST | Wind Advisory | ARX | 27 hr |
| Feb 19, 2:41 AM CST | Winter Weather Advisory | ARX | 32 hr |
| Feb 19, 11:30 AM CST | Winter Storm Warning | ARX | 25 hr |
| Mar 6, 10:30 PM CST | Special Weather Statement | ARX | 30 min |
| Mar 10, 8:58 PM CDT | Severe Thunderstorm Warning | ARX | 32 min |
| Mar 11, 9:15 PM CDT | High Wind Warning | ARX | 35 hr |
| Mar 11, 9:15 PM CDT | Wind Advisory | ARX | 40 hr |
| Mar 12, 2:30 PM CDT | Winter Storm Watch | ARX | 46 hr |
| Mar 13, 12:28 PM CDT | Winter Storm Warning | ARX | 54 hr |
| Mar 14, 6:09 AM CDT | Winter Weather Advisory | ARX | 31 hr |
| Mar 14, 12:46 PM CDT | Blizzard Warning | ARX | 46 hr |
| Mar 16, 3:43 AM CDT | Winter Weather Advisory | ARX | 9 hr |
| Mar 30, 9:21 PM CDT | Severe Thunderstorm Watch | SPC | 6 hr |
| Apr 2, 1:43 PM CDT | Tornado Watch | SPC | 8 hr |
| Apr 13, 9:15 PM CDT | Mesoscale Discussion | SPC | 60 min |
| Apr 13, 9:42 PM CDT | Severe Thunderstorm Watch | SPC | 5 hr |
| Apr 13, 11:40 PM CDT | Severe Thunderstorm Warning | ARX | 35 min |
| Apr 14, 12:56 PM CDT | Mesoscale Discussion | SPC | 2 hr |
| Apr 14, 2:33 PM CDT | Tornado Watch | SPC | 9 hr |
| Apr 14, 3:42 PM CDT | Mesoscale Discussion | SPC | 93 min |
| Apr 14, 5:12 PM CDT | Severe Thunderstorm Warning | ARX | 48 min |
| Apr 14, 5:29 PM CDT | Severe Thunderstorm Warning | ARX | 31 min |
| Apr 14, 5:29 PM CDT | Tornado Warning | ARX | 26 min |
| Apr 14, 5:55 PM CDT | Severe Thunderstorm Warning | ARX | 35 min |
| Apr 14, 6:05 PM CDT | Severe Thunderstorm Warning | ARX | 40 min |
| Apr 14, 6:36 PM CDT | Mesoscale Discussion | SPC | 114 min |
| Apr 14, 6:50 PM CDT | Severe Thunderstorm Warning | ARX | 25 min |
| Apr 15, 3:50 AM CDT | River Flood Watch | ARX | 25 hr |
| Apr 15, 12:16 PM CDT | Flood Watch | ARX | 15 hr |
| Apr 15, 4:48 PM CDT | Special Weather Statement | ARX | 57 min |
| Apr 15, 4:49 PM CDT | Mesoscale Discussion | SPC | 86 min |
| Apr 15, 5:12 PM CDT | Severe Thunderstorm Warning | ARX | 33 min |
| Apr 16, 5:16 AM CDT | River Flood Warning | ARX | 5 days |
| Apr 16, 5:18 AM CDT | River Flood Watch | ARX | 4 days |
| Apr 16, 12:53 PM CDT | Flood Watch | ARX | 31 hr |
| Apr 17, 11:48 AM CDT | Mesoscale Discussion | SPC | 2 hr |
| Apr 17, 12:40 PM CDT | Tornado Watch | SPC | 9 hr |
| Apr 17, 1:23 PM CDT | Special Weather Statement | ARX | 37 min |
| Apr 17, 2:03 PM CDT | Special Weather Statement | ARX | 27 min |
| Apr 17, 4:07 PM CDT | Tornado Warning | ARX | 38 min |
| Apr 17, 4:58 PM CDT | Special Weather Statement | ARX | 32 min |
| Apr 17, 5:30 PM CDT | Severe Thunderstorm Warning | ARX | 28 min |
| Apr 23, 9:19 PM CDT | Severe Thunderstorm Warning | ARX | 41 min |
| Apr 23, 10:16 PM CDT | Severe Thunderstorm Warning | ARX | 38 min |
| Apr 23, 11:41 PM CDT | Special Weather Statement | ARX | 34 min |
| Apr 27, 11:11 AM CDT | Special Weather Statement | ARX | 49 min |
| Apr 27, 12:52 PM CDT | Mesoscale Discussion | SPC | 2 hr |
| Apr 27, 4:59 PM CDT | Mesoscale Discussion | SPC | 91 min |
| Apr 30, 1:25 PM CDT | Frost Advisory | ARX | 19 hr |
| May 1, 2:25 AM CDT | Freeze Warning | ARX | 30 hr |
| May 5, 1:08 PM CDT | Frost Advisory | ARX | 19 hr |
| May 6, 1:09 PM CDT | Frost Advisory | ARX | 19 hr |
| May 7, 12:58 PM CDT | Frost Advisory | ARX | 19 hr |
| May 10, 12:00 PM CDT | Frost Advisory | ARX | 20 hr |
| May 12, 3:46 PM CDT | Wind Advisory | ARX | 4 hr |
| May 15, 5:41 PM CDT | Mesoscale Discussion | SPC | 2 hr |
| May 15, 9:07 PM CDT | Mesoscale Discussion | SPC | 113 min |
| May 15, 10:33 PM CDT | Severe Thunderstorm Watch | SPC | 4 hr |
| May 15, 10:54 PM CDT | Severe Thunderstorm Warning | ARX | 51 min |
| May 15, 11:14 PM CDT | Severe Thunderstorm Warning | ARX | 61 min |
| May 15, 11:34 PM CDT | Tornado Warning | ARX | 15 min |
| May 17, 10:32 PM CDT | Mesoscale Discussion | SPC | 118 min |
| May 17, 11:10 PM CDT | Severe Thunderstorm Watch | SPC | 5 hr |
| May 18, 1:24 AM CDT | Mesoscale Discussion | SPC | 96 min |
| Jun 8, 12:58 PM CDT | Mesoscale Discussion | SPC | 92 min |
| Jun 10, 11:09 AM CDT | Mesoscale Discussion | SPC | 2 hr |
| Jun 10, 12:00 PM CDT | Severe Thunderstorm Watch | SPC | 9 hr |
| Jun 10, 12:28 PM CDT | Severe Thunderstorm Warning | ARX | 62 min |
| Jun 10, 12:57 PM CDT | Severe Thunderstorm Warning | ARX | 78 min |
| Jun 10, 1:00 PM CDT | Mesoscale Discussion | SPC | 2 hr |
| Jun 10, 1:23 PM CDT | Severe Thunderstorm Warning | ARX | 37 min |
| Jun 11, 2:47 AM CDT | Flood Watch | ARX | 15 hr |
| Jun 11, 11:54 AM CDT | Special Weather Statement | ARX | 36 min |
| Jun 17, 1:17 PM CDT | Severe Thunderstorm Watch | SPC | 4 hr |
| Jun 17, 4:45 PM CDT | Mesoscale Discussion | SPC | 2 hr |
| Jun 17, 5:33 PM CDT | Tornado Warning | ARX | 30 min |
| Jun 17, 5:36 PM CDT | Tornado Watch | SPC | 3 hr |
| Jun 17, 5:55 PM CDT | Mesoscale Discussion | SPC | 95 min |
| Jun 24, 12:44 PM CDT | Mesoscale Discussion | SPC | 3 hr |
| Jun 24, 1:55 PM CDT | Severe Thunderstorm Watch | SPC | 8 hr |
| Jun 24, 3:59 PM CDT | Severe Thunderstorm Warning | ARX | 41 min |
| Jun 27, 1:27 AM CDT | Extreme Heat Watch | ARX | 23 hr |
| Jun 28, 12:34 AM CDT | Extreme Heat Warning | ARX | 68 hr |
| Jun 30, 9:26 PM CDT | Heat Advisory | ARX | 20 hr |
| Jul 1, 2:34 PM CDT | Mesoscale Discussion | SPC | 116 min |
| Jul 2, 8:07 AM CDT | Flood Watch | ARX | 36 hr |
| Jul 2, 11:05 AM CDT | Mesoscale Discussion | SPC | 85 min |
| Jul 2, 12:45 PM CDT | Severe Thunderstorm Watch | SPC | 8 hr |
| Jul 2, 1:10 PM CDT | Mesoscale Discussion | SPC | 95 min |
| Jul 2, 2:47 PM CDT | Tornado Warning | ARX | 43 min |
| Jul 2, 3:13 PM CDT | Severe Thunderstorm Warning | ARX | 62 min |
| Jul 2, 3:19 PM CDT | Severe Thunderstorm Warning | ARX | 56 min |
| Jul 2, 3:53 PM CDT | Mesoscale Discussion | SPC | 97 min |
| Jul 2, 4:08 PM CDT | Severe Thunderstorm Warning | ARX | 42 min |
| Jul 3, 5:05 PM CDT | Mesoscale Discussion | SPC | 115 min |
| Jul 8, 1:59 PM CDT | Severe Thunderstorm Watch | SPC | 8 hr |
| Jul 12, 1:33 PM CDT | Heat Advisory | ARX | 3 days |
| Jul 20, 3:03 PM CDT | Tornado Watch | SPC | 7 hr |
| Jul 20, 4:18 PM CDT | Special Weather Statement | ARX | 27 min |
| Jul 20, 7:20 PM CDT | Mesoscale Discussion | SPC | 115 min |
| Jul 24, 2:51 AM CDT | Extreme Heat Watch | ARX | 47 hr |
| Jul 25, 2:20 AM CDT | Extreme Heat Warning | ARX | 67 hr |
| Aug 7, 3:20 AM CDT | Dense Fog Advisory | ARX | 6 hr |
| Aug 11, 1:41 AM CDT | Special Weather Statement | ARX | 19 min |
| Aug 11, 7:22 AM CDT | Severe Thunderstorm Watch | SPC | 6 hr |
| Aug 11, 7:37 AM CDT | Severe Thunderstorm Warning | ARX | 54 min |
| Aug 11, 9:00 AM CDT | Mesoscale Discussion | SPC | 2 hr |
| Aug 11, 8:04 PM CDT | Mesoscale Discussion | SPC | 2 hr |
| Aug 18, 1:52 PM CDT | Mesoscale Discussion | SPC | 113 min |
| Aug 18, 2:28 PM CDT | Severe Thunderstorm Warning | ARX | 46 min |
| Aug 18, 2:48 PM CDT | Severe Thunderstorm Watch | SPC | 6 hr |
| Aug 18, 5:29 PM CDT | Mesoscale Discussion | SPC | 2 hr |
| Aug 21, 2:22 PM CDT | Mesoscale Discussion | SPC | 113 min |
| Aug 21, 2:30 PM CDT | Severe Thunderstorm Warning | ARX | 46 min |
| Aug 21, 2:57 PM CDT | Severe Thunderstorm Watch | SPC | 9 hr |
| Aug 26, 2:29 AM CDT | Severe Thunderstorm Warning | ARX | 16 min |
| Sep 4, 2:49 AM CDT | Heat Advisory | ARX | 16 hr |
| Sep 4, 2:10 PM CDT | Mesoscale Discussion | SPC | 2 hr |
| Sep 4, 4:31 PM CDT | Severe Thunderstorm Warning | ARX | 27 min |
| Sep 17, 8:08 PM CDT | Flood Watch | ARX | 59 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 archive2025
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.