Alert archive / Wisconsin / Marathon County
Weather alerts in Marathon County, Wisconsin, 2025
127 weather alerts in 2025, from the National Weather Service and the Storm Prediction Center. An alert counts here when it covered this county.
Marathon County and its neighbors
Each county as a circle sized by its count in 2025. Tap one for its archive.
- Alerts
- 127
- Warnings
- 38
- Watches
- 11
- Advisories
- 43
- Busiest month
- July25 alerts
- Busiest day
- July 23, 202510 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 6 tornado warnings covering Marathon County in 2025 had a tornado report inside them.
Marathon County, 2025
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| Tornado warnings | 6 | 0 | 100% | 0 | ||
| Severe thunderstorm warnings | 15 | 9 | 40% | 17 | 88% | 25 min |
| Flash flood warnings | 0 | 0 |
Each office's whole area, 2025
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| NWS Green Bay, WI: tornado warnings | 18 | 2 | 89% | 11 | 36% | 15 min |
| NWS Green Bay, WI: severe thunderstorm warnings | 104 | 55 | 47% | 177 | 77% | 19 min |
| NWS Green Bay, WI: flash flood warnings | 6 | 4 | 33% | 12 | 92% | 61 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, 2:21 AM CST | Winter Weather Advisory | GRB | 36 hr |
| Jan 13, 2:24 PM CST | Cold Weather Advisory | GRB | 19 hr |
| Jan 17, 2:21 PM CST | Cold Weather Advisory | GRB | 3 days |
| Jan 19, 2:14 PM CST | Extreme Cold Warning | GRB | 46 hr |
| Jan 21, 3:16 AM CST | Cold Weather Advisory | GRB | 21 hr |
| Feb 2, 2:14 AM CST | Winter Weather Advisory | GRB | 7 hr |
| Feb 2, 3:12 AM CST | Winter Weather Advisory | GRB | 33 hr |
| Feb 5, 2:37 PM CST | Wind Advisory | GRB | 29 hr |
| Feb 5, 10:29 PM CST | Winter Weather Advisory | GRB | 8 hr |
| Feb 6, 3:56 AM CST | Winter Storm Watch | GRB | 32 hr |
| Feb 7, 3:38 AM CST | Winter Weather Advisory | GRB | 39 hr |
| Feb 8, 3:07 AM CST | Winter Storm Warning | GRB | 16 hr |
| Feb 13, 1:30 PM CST | Winter Weather Advisory | GRB | 61 hr |
| Feb 16, 2:59 AM CST | Cold Weather Advisory | GRB | 33 hr |
| Feb 17, 1:34 PM CST | Extreme Cold Warning | GRB | 20 hr |
| Feb 18, 1:22 PM CST | Cold Weather Advisory | GRB | 20 hr |
| Feb 27, 12:55 PM CST | Wind Advisory | GRB | 35 hr |
| Mar 4, 2:45 AM CST | Winter Storm Warning | GRB | 42 hr |
| Mar 4, 2:45 AM CST | Winter Weather Advisory | GRB | 42 hr |
| Mar 15, 12:52 AM CDT | Special Weather Statement | GRB | 53 min |
| Mar 15, 1:47 AM CDT | Special Weather Statement | GRB | 58 min |
| Mar 17, 2:34 PM CDT | Winter Storm Watch | GRB | 24 hr |
| Mar 18, 2:21 PM CDT | Winter Storm Warning | GRB | 39 hr |
| Mar 19, 12:17 PM CDT | Mesoscale Discussion | SPC | 3 hr |
| Mar 22, 3:10 AM CDT | Winter Weather Advisory | GRB | 52 hr |
| Mar 22, 2:14 PM CDT | Winter Storm Warning | GRB | 39 hr |
| Mar 28, 2:52 AM CDT | Winter Storm Watch | GRB | 24 hr |
| Mar 28, 1:51 PM CDT | Ice Storm Warning | GRB | 52 hr |
| Mar 28, 1:51 PM CDT | Winter Storm Warning | GRB | 62 hr |
| Mar 28, 6:23 PM CDT | Mesoscale Discussion | SPC | 3 hr |
| Mar 29, 7:32 AM CDT | River Flood Warning | GRB | 21 days |
| Mar 29, 3:47 PM CDT | River Flood Warning | GRB | 18 hr |
| Mar 29, 8:32 PM CDT | Mesoscale Discussion | SPC | 5 hr |
| Mar 30, 12:49 PM CDT | River Flood Warning | GRB | 21 hr |
| Apr 1, 3:15 AM CDT | Winter Weather Advisory | GRB | 32 hr |
| Apr 28, 2:05 PM CDT | Special Weather Statement | GRB | 25 min |
| Apr 28, 6:06 PM CDT | Mesoscale Discussion | SPC | 84 min |
| Apr 28, 7:34 PM CDT | Tornado Watch | SPC | 5 hr |
| Apr 28, 8:34 PM CDT | Special Weather Statement | GRB | 56 min |
| Apr 28, 8:41 PM CDT | Severe Thunderstorm Warning | GRB | 64 min |
| Apr 28, 8:49 PM CDT | Tornado Warning | GRB | 41 min |
| Apr 28, 9:33 PM CDT | Severe Thunderstorm Warning | GRB | 40 min |
| Apr 29, 3:57 AM CDT | River Flood Warning | GRB | 50 hr |
| May 7, 12:18 PM CDT | Frost Advisory | GRB | 21 hr |
| May 8, 1:04 PM CDT | Frost Advisory | GRB | 19 hr |
| May 15, 3:05 PM CDT | Tornado Watch | SPC | 6 hr |
| May 15, 4:50 PM CDT | Severe Thunderstorm Warning | GRB | 55 min |
| May 15, 5:12 PM CDT | Tornado Warning | GRB | 48 min |
| May 15, 5:24 PM CDT | Tornado Warning | GRB | 51 min |
| May 15, 5:36 PM CDT | Mesoscale Discussion | SPC | 84 min |
| May 15, 5:46 PM CDT | Tornado Warning | GRB | 44 min |
| May 15, 5:51 PM CDT | Severe Thunderstorm Warning | GRB | 39 min |
| May 15, 6:05 PM CDT | Tornado Warning | GRB | 55 min |
| May 15, 6:20 PM CDT | Severe Thunderstorm Warning | GRB | 55 min |
| May 15, 7:01 PM CDT | Severe Thunderstorm Warning | GRB | 44 min |
| May 23, 11:36 AM CDT | Frost Advisory | GRB | 20 hr |
| Jun 3, 1:32 PM CDT | Mesoscale Discussion | SPC | 118 min |
| Jun 3, 2:30 PM CDT | Areal Flood Advisory | GRB | 3 hr |
| Jun 3, 3:42 PM CDT | Areal Flood Advisory | GRB | 3 hr |
| Jun 19, 5:33 PM CDT | Severe Thunderstorm Warning | GRB | 27 min |
| Jun 19, 5:57 PM CDT | Severe Thunderstorm Warning | GRB | 21 min |
| Jun 20, 12:44 AM CDT | Mesoscale Discussion | SPC | 2 hr |
| Jun 20, 2:56 AM CDT | Heat Advisory | GRB | 4 days |
| Jun 20, 3:06 AM CDT | Special Weather Statement | GRB | 39 min |
| Jun 23, 12:29 PM CDT | Mesoscale Discussion | SPC | 3 hr |
| Jun 23, 1:15 PM CDT | Severe Thunderstorm Watch | SPC | 8 hr |
| Jun 27, 11:06 AM CDT | River Flood Warning | GRB | 3 days |
| Jun 28, 4:36 AM CDT | Dense Fog Advisory | GRB | 4 hr |
| Jun 30, 5:57 AM CDT | Dense Fog Advisory | GRB | 2 hr |
| Jun 30, 4:31 PM CDT | Special Weather Statement | GRB | 59 min |
| Jul 2, 3:00 PM CDT | Special Weather Statement | GRB | 45 min |
| Jul 2, 3:16 PM CDT | Special Weather Statement | GRB | 59 min |
| Jul 2, 3:28 PM CDT | Mesoscale Discussion | SPC | 92 min |
| Jul 2, 5:17 PM CDT | Special Weather Statement | GRB | 43 min |
| Jul 2, 5:41 PM CDT | Severe Thunderstorm Warning | GRB | 49 min |
| Jul 2, 5:59 PM CDT | Special Weather Statement | GRB | 46 min |
| Jul 2, 6:47 PM CDT | Special Weather Statement | GRB | 43 min |
| Jul 3, 11:29 PM CDT | Special Weather Statement | GRB | 61 min |
| Jul 5, 1:59 PM CDT | Special Weather Statement | GRB | 31 min |
| Jul 5, 2:37 PM CDT | Special Weather Statement | GRB | 23 min |
| Jul 10, 6:39 PM CDT | Special Weather Statement | GRB | 51 min |
| Jul 16, 2:50 AM CDT | Flood Watch | GRB | 19 hr |
| Jul 19, 5:00 AM CDT | Severe Thunderstorm Warning | GRB | 60 min |
| Jul 19, 5:43 AM CDT | Severe Thunderstorm Warning | GRB | 62 min |
| Jul 19, 6:53 AM CDT | Mesoscale Discussion | SPC | 97 min |
| Jul 23, 2:10 PM CDT | Flood Watch | GRB | 11 hr |
| Jul 23, 2:54 PM CDT | Mesoscale Discussion | SPC | 2 hr |
| Jul 23, 3:37 PM CDT | Severe Thunderstorm Warning | GRB | 38 min |
| Jul 23, 3:58 PM CDT | Special Weather Statement | GRB | 32 min |
| Jul 23, 4:09 PM CDT | Tornado Warning | GRB | 20 min |
| Jul 23, 4:17 PM CDT | Special Weather Statement | GRB | 43 min |
| Jul 23, 4:27 PM CDT | Severe Thunderstorm Warning | GRB | 48 min |
| Jul 23, 4:43 PM CDT | Special Weather Statement | GRB | 47 min |
| Jul 23, 5:00 PM CDT | Areal Flood Advisory | GRB | 3 hr |
| Jul 23, 5:02 PM CDT | Severe Thunderstorm Warning | GRB | 43 min |
| Aug 9, 7:13 AM CDT | Special Weather Statement | GRB | 62 min |
| Aug 9, 7:33 AM CDT | Severe Thunderstorm Warning | GRB | 42 min |
| Aug 9, 10:53 AM CDT | Areal Flood Advisory | GRB | 3 hr |
| Aug 10, 12:13 AM CDT | Dense Fog Advisory | GRB | 8 hr |
| Aug 15, 4:58 PM CDT | Mesoscale Discussion | SPC | 92 min |
| Aug 16, 8:50 AM CDT | Special Weather Statement | GRB | 55 min |
| Aug 16, 9:43 AM CDT | Special Weather Statement | GRB | 62 min |
| Aug 30, 2:06 AM CDT | Dense Fog Advisory | GRB | 7 hr |
| Sep 3, 2:00 PM CDT | Frost Advisory | GRB | 18 hr |
| Sep 7, 2:48 PM CDT | Frost Advisory | GRB | 17 hr |
| Sep 11, 10:50 PM CDT | Dense Fog Advisory | GRB | 12 hr |
| Sep 18, 6:40 PM CDT | Special Weather Statement | GRB | 65 min |
| Oct 7, 3:07 AM CDT | Freeze Warning | GRB | 30 hr |
| Oct 8, 2:48 PM CDT | Frost Advisory | GRB | 18 hr |
| Oct 10, 2:22 PM CDT | Frost Advisory | GRB | 18 hr |
| Oct 19, 2:14 PM CDT | Frost Advisory | GRB | 18 hr |
| Nov 18, 8:17 PM CST | Dense Fog Advisory | GRB | 13 hr |
| Nov 25, 3:07 AM CST | Winter Weather Advisory | GRB | 39 hr |
| Nov 25, 10:58 AM CST | Wind Advisory | GRB | 43 hr |
| Nov 27, 2:16 PM CST | Winter Storm Watch | GRB | 23 hr |
| Nov 28, 3:25 AM CST | Winter Storm Warning | GRB | 51 hr |
| Dec 8, 2:50 AM CST | Winter Storm Watch | GRB | 24 hr |
| Dec 9, 2:37 AM CST | Winter Storm Warning | GRB | 29 hr |
| Dec 9, 7:12 PM CST | Mesoscale Discussion | SPC | 3 hr |
| Dec 12, 1:47 AM CST | Cold Weather Advisory | GRB | 56 hr |
| Dec 18, 2:14 PM CST | Winter Weather Advisory | GRB | 16 hr |
| Dec 20, 3:14 PM CST | Wind Advisory | GRB | 4 hr |
| Dec 25, 3:07 AM CST | Winter Weather Advisory | GRB | 31 hr |
| Dec 26, 2:13 PM CST | Winter Storm Watch | GRB | 24 hr |
| Dec 27, 2:14 PM CST | Winter Storm Warning | GRB | 49 hr |
| Dec 27, 4:50 PM CST | Dense Fog Advisory | GRB | 9 hr |
| Dec 29, 8:18 AM CST | Winter Weather Advisory | GRB | 7 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 | 15 |
| Tornado Warning | 6 |
| Severe Thunderstorm Watch | 1 |
| Tornado Watch | 2 |
| Mesoscale Discussion | 13 |
| Special Weather Statement | 22 |
| Flooding | |
| River Flood Warning | 5 |
| Flood Watch | 2 |
| Areal Flood Advisory | 4 |
| Winter | |
| Ice Storm Warning | 1 |
| Winter Storm Warning | 8 |
| Winter Storm Watch | 6 |
| Winter Weather Advisory | 13 |
| Heat | |
| Heat Advisory | 1 |
| Cold | |
| Extreme Cold Warning | 2 |
| Freeze Warning | 1 |
| Cold Weather Advisory | 6 |
| Frost Advisory | 8 |
| Wind and dust | |
| Wind Advisory | 4 |
| Fog and smoke | |
| Dense Fog Advisory | 7 |
The busiest days
Days with the most alerts issued, by UTC date.
Nearby
Alerts in force nowTornadoes on recordForecastThe radar archive20242026
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.