Alert archive / Wisconsin / Forest County
Weather alerts in Forest County, Wisconsin, 2026
85 weather alerts in 2026, from the National Weather Service and the Storm Prediction Center. An alert counts here when it covered this county.
Forest County and its neighbors
Each county as a circle sized by its count in 2026. Tap one for its archive.
- Alerts
- 85
- Warnings
- 17
- Watches
- 13
- Advisories
- 31
- Busiest month
- July17 alerts
- Busiest day
- July 27, 20269 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 1 tornado warnings covering Forest County in 2026 had a tornado report inside them.
Forest County, 2026
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| Tornado warnings | 1 | 0 | 100% | 0 | ||
| Severe thunderstorm warnings | 6 | 4 | 33% | 4 | 100% | 40 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 Green Bay, WI: tornado warnings | 26 | 4 | 85% | 10 | 60% | 23 min |
| NWS Green Bay, WI: severe thunderstorm warnings | 149 | 62 | 58% | 186 | 80% | 25 min |
| NWS Green Bay, WI: flash flood warnings | 12 | 8 | 33% | 31 | 74% | 50 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 4, 3:34 AM CST | Winter Weather Advisory | GRB | 21 hr |
| Jan 8, 2:01 AM CST | Dense Fog Advisory | GRB | 10 hr |
| Jan 8, 2:29 AM CST | Winter Weather Advisory | GRB | 28 hr |
| Jan 12, 2:05 PM CST | Winter Weather Advisory | GRB | 19 hr |
| Jan 17, 2:00 PM CST | Cold Weather Advisory | GRB | 68 hr |
| Jan 20, 1:36 PM CST | Extreme Cold Watch | GRB | 48 hr |
| Jan 21, 1:31 PM CST | Extreme Cold Warning | GRB | 67 hr |
| Jan 24, 1:18 PM CST | Cold Weather Advisory | GRB | 23 hr |
| Jan 25, 2:33 AM CST | Cold Weather Advisory | GRB | 33 hr |
| Feb 8, 2:18 PM CST | Winter Weather Advisory | GRB | 36 hr |
| Feb 13, 1:20 PM CST | Dense Fog Advisory | GRB | 13 hr |
| Feb 17, 3:11 AM CST | Winter Weather Advisory | GRB | 33 hr |
| Feb 19, 1:42 PM CST | Winter Weather Advisory | GRB | 46 hr |
| Feb 23, 1:54 PM CST | Winter Weather Advisory | GRB | 27 hr |
| Feb 27, 4:54 PM CST | Wind Advisory | GRB | 4 hr |
| Mar 10, 2:13 AM CDT | Winter Weather Advisory | GRB | 35 hr |
| Mar 10, 1:01 PM CDT | Winter Storm Warning | GRB | 24 hr |
| Mar 11, 1:37 PM CDT | Winter Storm Watch | GRB | 12 hr |
| Mar 12, 1:42 AM CDT | Winter Storm Warning | GRB | 35 hr |
| Mar 12, 2:38 PM CDT | Winter Storm Watch | GRB | 22 hr |
| Mar 13, 12:59 PM CDT | Winter Storm Warning | GRB | 49 hr |
| Mar 14, 1:13 PM CDT | Blizzard Warning | GRB | 56 hr |
| Mar 15, 5:40 AM CDT | Mesoscale Discussion | SPC | 5 hr |
| Mar 16, 4:25 AM CDT | Mesoscale Discussion | SPC | 5 hr |
| Mar 16, 11:37 AM CDT | Winter Weather Advisory | GRB | 9 hr |
| Mar 31, 2:10 PM CDT | Winter Storm Watch | GRB | 13 hr |
| Apr 1, 3:16 AM CDT | Ice Storm Warning | GRB | 40 hr |
| Apr 1, 3:16 AM CDT | Winter Storm Warning | GRB | 40 hr |
| Apr 2, 2:21 AM CDT | Winter Storm Watch | GRB | 24 hr |
| Apr 2, 7:27 AM CDT | Mesoscale Discussion | SPC | 3 hr |
| Apr 2, 7:08 PM CDT | Winter Weather Advisory | GRB | 6 hr |
| Apr 3, 2:30 AM CDT | Ice Storm Warning | GRB | 32 hr |
| Apr 3, 10:27 PM CDT | Mesoscale Discussion | SPC | 6 hr |
| Apr 13, 4:10 PM CDT | River Flood Warning | GRB | 8 days |
| Apr 13, 4:48 PM CDT | Mesoscale Discussion | SPC | 117 min |
| Apr 15, 2:58 AM CDT | Dense Fog Advisory | GRB | 7 hr |
| Apr 15, 2:19 PM CDT | Dense Fog Advisory | GRB | 20 hr |
| Apr 16, 1:33 PM CDT | Flood Watch | GRB | 37 hr |
| Apr 16, 8:36 PM CDT | Dense Fog Advisory | GRB | 12 hr |
| Apr 17, 9:23 AM CDT | Severe Thunderstorm Watch | SPC | 11 hr |
| Apr 17, 5:06 PM CDT | Mesoscale Discussion | SPC | 114 min |
| Apr 17, 5:19 PM CDT | Severe Thunderstorm Warning | GRB | 18 min |
| May 12, 7:01 AM CDT | Special Weather Statement | GRB | 29 min |
| May 15, 5:41 PM CDT | Mesoscale Discussion | SPC | 2 hr |
| May 15, 8:53 PM CDT | Special Weather Statement | GRB | 52 min |
| May 19, 12:25 AM CDT | Special Weather Statement | GRB | 65 min |
| May 20, 1:17 PM CDT | Frost Advisory | GRB | 19 hr |
| May 21, 4:20 AM CDT | Freeze Warning | GRB | 4 hr |
| Jun 5, 2:38 PM CDT | Mesoscale Discussion | SPC | 97 min |
| Jun 5, 5:24 PM CDT | Mesoscale Discussion | SPC | 2 hr |
| Jun 9, 10:31 PM CDT | Dense Fog Advisory | GRB | 11 hr |
| Jun 10, 8:41 AM CDT | Special Weather Statement | GRB | 79 min |
| Jun 24, 1:55 PM CDT | Severe Thunderstorm Watch | SPC | 8 hr |
| Jun 24, 4:50 PM CDT | Areal Flood Advisory | GRB | 3 hr |
| Jun 24, 5:28 PM CDT | Mesoscale Discussion | SPC | 92 min |
| Jun 28, 12:35 PM CDT | Heat Advisory | GRB | 54 hr |
| Jun 29, 1:30 AM CDT | Mesoscale Discussion | SPC | 3 hr |
| Jun 29, 7:03 PM CDT | Mesoscale Discussion | SPC | 87 min |
| Jun 29, 7:20 PM CDT | Special Weather Statement | GRB | 25 min |
| Jun 30, 8:38 AM CDT | Severe Thunderstorm Watch | SPC | 3 hr |
| Jul 8, 5:09 PM CDT | Areal Flood Advisory | GRB | 82 min |
| Jul 12, 1:33 PM CDT | Heat Advisory | GRB | 3 days |
| Jul 20, 3:49 PM CDT | Tornado Watch | SPC | 7 hr |
| Jul 20, 4:58 PM CDT | Severe Thunderstorm Warning | GRB | 47 min |
| Jul 20, 5:15 PM CDT | Mesoscale Discussion | SPC | 2 hr |
| Jul 20, 7:32 PM CDT | Severe Thunderstorm Warning | GRB | 43 min |
| Jul 20, 8:04 PM CDT | Mesoscale Discussion | SPC | 86 min |
| Jul 26, 4:23 AM CDT | Dense Fog Advisory | GRB | 4 hr |
| Jul 26, 8:28 PM CDT | Mesoscale Discussion | SPC | 92 min |
| Jul 26, 11:54 PM CDT | Mesoscale Discussion | SPC | 96 min |
| Jul 27, 1:30 AM CDT | Severe Thunderstorm Watch | SPC | 8 hr |
| Jul 27, 7:30 AM CDT | Mesoscale Discussion | SPC | 2 hr |
| Jul 27, 8:20 AM CDT | Severe Thunderstorm Warning | GRB | 55 min |
| Jul 27, 8:43 AM CDT | Severe Thunderstorm Watch | SPC | 5 hr |
| Jul 27, 9:06 AM CDT | Severe Thunderstorm Warning | GRB | 54 min |
| Jul 27, 9:44 AM CDT | Tornado Warning | GRB | 31 min |
| Jul 27, 9:57 AM CDT | Severe Thunderstorm Warning | GRB | 63 min |
| Aug 7, 3:11 PM CDT | Mesoscale Discussion | SPC | 2 hr |
| Aug 7, 3:50 PM CDT | Severe Thunderstorm Watch | SPC | 5 hr |
| Aug 7, 5:53 PM CDT | Mesoscale Discussion | SPC | 2 hr |
| Aug 10, 5:05 AM CDT | Dense Fog Advisory | GRB | 4 hr |
| Sep 1, 12:15 AM CDT | Dense Fog Advisory | GRB | 9 hr |
| Sep 13, 2:08 AM CDT | Frost Advisory | GRB | 30 hr |
| Sep 21, 12:37 PM CDT | Frost Advisory | GRB | 18 hr |
| Sep 22, 12:30 PM CDT | Frost Advisory | GRB | 19 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.