Alert archive / Wisconsin / Manitowoc County
Weather alerts in Manitowoc County, Wisconsin, 2026
126 weather alerts in 2026, from the National Weather Service and the Storm Prediction Center. An alert counts here when it covered this county.
Manitowoc County and its neighbors
Each county as a circle sized by its count in 2026. Tap one for its archive.
- Alerts
- 126
- Warnings
- 25
- Watches
- 16
- Advisories
- 32
- Busiest month
- April26 alerts
- Busiest day
- April 14, 202610 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 Manitowoc County in 2026 had a tornado report inside them.
Manitowoc 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 | 12 | 7 | 42% | 9 | 89% | 23 min |
| Flash flood warnings | 1 | 1 | 0% | 1 | 100% | 106 min |
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 5, 3:17 AM CST | Winter Weather Advisory | GRB | 43 hr |
| Jan 8, 2:01 AM CST | Dense Fog Advisory | GRB | 10 hr |
| Jan 10, 2:30 AM CST | Winter Weather Advisory | GRB | 20 hr |
| Jan 16, 1:38 AM CST | Winter Weather Advisory | GRB | 34 hr |
| Jan 17, 2:00 PM CST | Cold Weather Advisory | GRB | 68 hr |
| Jan 18, 2:05 AM CST | Winter Weather Advisory | GRB | 34 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 |
| Mar 5, 9:39 PM CST | Dense Fog Advisory | GRB | 29 hr |
| Mar 10, 2:13 AM CDT | Winter Weather Advisory | GRB | 35 hr |
| Mar 12, 1:39 AM CDT | Wind Advisory | GRB | 40 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 14, 11:55 PM 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 30, 11:05 PM CDT | Severe Thunderstorm Warning | GRB | 25 min |
| Mar 30, 11:26 PM CDT | Severe Thunderstorm Warning | GRB | 49 min |
| Mar 31, 9:15 AM CDT | Special Weather Statement | GRB | 45 min |
| Mar 31, 10:57 AM CDT | Special Weather Statement | GRB | 63 min |
| Mar 31, 11:54 AM CDT | Special Weather Statement | GRB | 66 min |
| Apr 1, 3:16 AM CDT | Winter Weather Advisory | GRB | 31 hr |
| Apr 2, 7:27 AM CDT | Mesoscale Discussion | SPC | 3 hr |
| Apr 2, 7:30 PM CDT | Special Weather Statement | GRB | 60 min |
| Apr 2, 8:10 PM CDT | Special Weather Statement | GRB | 50 min |
| Apr 12, 5:24 PM CDT | Special Weather Statement | GRB | 36 min |
| Apr 12, 5:59 PM CDT | Special Weather Statement | GRB | 46 min |
| Apr 13, 2:04 AM CDT | Flood Watch | GRB | 49 hr |
| Apr 13, 8:22 PM CDT | Severe Thunderstorm Warning | GRB | 42 min |
| Apr 13, 9:42 PM CDT | Severe Thunderstorm Watch | SPC | 5 hr |
| Apr 13, 10:21 PM CDT | Areal Flood Advisory | GRB | 6 hr |
| Apr 13, 10:54 PM CDT | Flash Flood Warning | GRB | 5 hr |
| Apr 13, 11:27 PM CDT | Special Weather Statement | GRB | 33 min |
| Apr 14, 3:52 AM CDT | Areal Flood Advisory | GRB | 6 hr |
| Apr 14, 9:08 AM CDT | River Flood Warning | GRB | 21 days |
| Apr 14, 9:48 AM CDT | Areal Flood Warning | GRB | 9 hr |
| Apr 14, 2:33 PM CDT | Tornado Watch | SPC | 9 hr |
| Apr 14, 6:53 PM CDT | Areal Flood Warning | GRB | 9 hr |
| Apr 15, 2:34 AM CDT | Areal Flood Warning | GRB | 11 hr |
| Apr 15, 2:58 AM CDT | Dense Fog Advisory | GRB | 7 hr |
| Apr 15, 7:29 AM CDT | River Flood Warning | GRB | 29 hr |
| Apr 15, 2:19 PM CDT | Dense Fog Advisory | GRB | 20 hr |
| Apr 15, 2:30 PM CDT | Flood Watch | GRB | 8 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, 8:53 PM CDT | Special Weather Statement | GRB | 22 min |
| Apr 30, 1:31 PM CDT | Frost Advisory | GRB | 18 hr |
| May 1, 7:56 AM CDT | Freeze Warning | GRB | 24 hr |
| May 5, 1:42 PM CDT | Frost Advisory | GRB | 18 hr |
| May 6, 1:23 PM CDT | Frost Advisory | GRB | 19 hr |
| May 7, 12:47 PM CDT | Frost Advisory | GRB | 19 hr |
| May 10, 12:02 PM CDT | Freeze Warning | GRB | 20 hr |
| May 12, 4:36 PM CDT | Mesoscale Discussion | SPC | 114 min |
| May 17, 1:55 PM CDT | Special Weather Statement | GRB | 50 min |
| May 17, 3:25 PM CDT | Severe Thunderstorm Warning | GRB | 50 min |
| May 21, 1:05 PM CDT | Beach Hazards Statement | GRB | 33 hr |
| May 25, 3:22 AM CDT | Beach Hazards Statement | GRB | 25 hr |
| May 27, 1:00 AM CDT | Beach Hazards Statement | GRB | 26 hr |
| Jun 3, 1:45 AM CDT | Beach Hazards Statement | GRB | 46 hr |
| Jun 5, 9:07 PM CDT | Special Weather Statement | GRB | 38 min |
| Jun 5, 9:18 PM CDT | Mesoscale Discussion | SPC | 87 min |
| Jun 5, 9:27 PM CDT | Severe Thunderstorm Warning | GRB | 33 min |
| Jun 9, 3:06 AM CDT | Dense Fog Advisory | GRB | 7 hr |
| Jun 9, 10:31 PM CDT | Dense Fog Advisory | GRB | 11 hr |
| Jun 10, 9:46 AM CDT | Beach Hazards Statement | GRB | 13 hr |
| Jun 10, 12:00 PM CDT | Severe Thunderstorm Watch | SPC | 9 hr |
| Jun 10, 3:25 PM CDT | Severe Thunderstorm Warning | GRB | 50 min |
| Jun 10, 3:58 PM CDT | Mesoscale Discussion | SPC | 2 hr |
| Jun 10, 4:14 PM CDT | Special Weather Statement | GRB | 46 min |
| Jun 11, 2:55 AM CDT | Beach Hazards Statement | GRB | 23 hr |
| Jun 11, 6:35 PM CDT | Special Weather Statement | GRB | 25 min |
| Jun 11, 6:56 PM CDT | Special Weather Statement | GRB | 64 min |
| Jun 11, 9:08 PM CDT | Special Weather Statement | GRB | 67 min |
| Jun 16, 3:43 PM CDT | Beach Hazards Statement | GRB | 36 hr |
| Jun 24, 1:55 PM CDT | Severe Thunderstorm Watch | SPC | 8 hr |
| Jun 24, 5:28 PM CDT | Mesoscale Discussion | SPC | 92 min |
| Jun 24, 7:02 PM CDT | Special Weather Statement | GRB | 58 min |
| Jun 28, 8:28 AM CDT | Beach Hazards Statement | GRB | 63 hr |
| Jun 28, 11:54 AM CDT | Extreme Heat Warning | GRB | 55 hr |
| Jun 30, 8:38 AM CDT | Severe Thunderstorm Watch | SPC | 3 hr |
| Jun 30, 10:34 AM CDT | Mesoscale Discussion | SPC | 116 min |
| Jul 1, 12:35 AM CDT | Heat Advisory | GRB | 19 hr |
| Jul 1, 6:59 AM CDT | Mesoscale Discussion | SPC | 3 hr |
| Jul 1, 7:56 AM CDT | Severe Thunderstorm Warning | GRB | 64 min |
| Jul 1, 9:03 AM CDT | Special Weather Statement | GRB | 57 min |
| Jul 1, 11:05 AM CDT | Severe Thunderstorm Watch | SPC | 3 hr |
| Jul 1, 11:23 AM CDT | Flood Watch | GRB | 19 hr |
| Jul 1, 7:26 PM CDT | Special Weather Statement | GRB | 19 min |
| Jul 1, 11:27 PM CDT | Severe Thunderstorm Watch | SPC | 3 hr |
| Jul 2, 12:03 AM CDT | Areal Flood Advisory | GRB | 4 hr |
| Jul 8, 1:59 PM CDT | Severe Thunderstorm Watch | SPC | 8 hr |
| Jul 8, 4:20 PM CDT | Severe Thunderstorm Warning | GRB | 40 min |
| Jul 8, 4:39 PM CDT | Severe Thunderstorm Warning | GRB | 34 min |
| Jul 8, 5:20 PM CDT | Areal Flood Advisory | GRB | 106 min |
| Jul 12, 1:33 PM CDT | Heat Advisory | GRB | 3 days |
| Jul 19, 2:10 PM CDT | Beach Hazards Statement | GRB | 37 hr |
| Jul 20, 3:49 PM CDT | Tornado Watch | SPC | 7 hr |
| Jul 27, 8:43 AM CDT | Severe Thunderstorm Watch | SPC | 5 hr |
| Jul 27, 9:40 AM CDT | Mesoscale Discussion | SPC | 3 hr |
| Jul 27, 11:58 AM CDT | Severe Thunderstorm Warning | GRB | 62 min |
| Jul 27, 11:59 AM CDT | Tornado Warning | GRB | 46 min |
| Jul 27, 4:57 PM CDT | Mesoscale Discussion | SPC | 93 min |
| Jul 31, 3:23 PM CDT | Beach Hazards Statement | GRB | 22 hr |
| Aug 1, 1:36 PM CDT | Beach Hazards Statement | GRB | 29 hr |
| Aug 3, 1:30 PM CDT | Beach Hazards Statement | GRB | 33 hr |
| Aug 6, 3:09 AM CDT | Dense Fog Advisory | GRB | 6 hr |
| Aug 14, 2:07 PM CDT | Beach Hazards Statement | GRB | 29 hr |
| Aug 18, 4:52 PM CDT | Mesoscale Discussion | SPC | 113 min |
| Aug 22, 3:26 PM CDT | Special Weather Statement | GRB | 34 min |
| Aug 24, 9:29 PM CDT | Beach Hazards Statement | GRB | 38 hr |
| Aug 30, 3:02 AM CDT | Beach Hazards Statement | GRB | 14 hr |
| Sep 2, 5:10 AM CDT | Severe Thunderstorm Warning | GRB | 50 min |
| Sep 2, 5:37 AM CDT | Mesoscale Discussion | SPC | 113 min |
| Sep 3, 7:52 AM CDT | Mesoscale Discussion | SPC | 83 min |
| Sep 4, 1:57 AM CDT | Severe Thunderstorm Warning | GRB | 63 min |
| Sep 4, 7:39 AM CDT | Areal Flood Advisory | GRB | 2 hr |
| Sep 7, 1:44 AM CDT | Beach Hazards Statement | GRB | 53 hr |
| Sep 10, 6:53 PM CDT | Beach Hazards Statement | GRB | 42 hr |
| Sep 13, 1:13 PM CDT | Beach Hazards Statement | GRB | 54 hr |
| Sep 14, 10:38 PM CDT | Areal Flood Advisory | GRB | 3 hr |
| Sep 18, 1:30 PM CDT | Beach Hazards Statement | GRB | 33 hr |
| Sep 19, 12:32 PM CDT | Beach Hazards Statement | GRB | 3 days |
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 | 12 |
| Tornado Warning | 1 |
| Severe Thunderstorm Watch | 8 |
| Tornado Watch | 2 |
| Mesoscale Discussion | 14 |
| Special Weather Statement | 19 |
| Flooding | |
| Areal Flood Warning | 3 |
| Flash Flood Warning | 1 |
| River Flood Warning | 2 |
| Flood Watch | 4 |
| Areal Flood Advisory | 6 |
| Winter | |
| Blizzard Warning | 1 |
| Winter Storm Warning | 1 |
| Winter Storm Watch | 1 |
| Winter Weather Advisory | 8 |
| Heat | |
| Extreme Heat Warning | 1 |
| Heat Advisory | 2 |
| Cold | |
| Extreme Cold Warning | 1 |
| Freeze Warning | 2 |
| Extreme Cold Watch | 1 |
| Cold Weather Advisory | 3 |
| Frost Advisory | 4 |
| Wind and dust | |
| Wind Advisory | 1 |
| Fog and smoke | |
| Dense Fog Advisory | 8 |
| Coast and beach | |
| Beach Hazards Statement | 20 |
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.