Alert archive / Wisconsin / 2021
Weather alerts in Wisconsin, April 2021
145 weather alerts in April 2021, from the National Weather Service and the Storm Prediction Center. An alert counts here when it covered any part of the state, so the counties below add up to more than the state.
Weather alerts by county
Each county as a circle sized by its count in April 2021. Tap one for its archive.
- Alerts
- 145
- Warnings
- 12
- Watches
- 4
- Advisories
- 32
- Busiest day
- April 6, 202141 alerts
Over time
By day
Days in UTC, the clock the archive keeps.
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 | Counties | Lasted |
|---|---|---|---|---|
| Mar 31, 8:11 PM CDT | Small Craft Advisory | GRB | 17 hr | |
| Apr 1, 1:15 PM CDT | Small Craft Advisory | MKX | 6 hr | |
| Apr 2, 3:42 AM CDT | Small Craft Advisory | GRB | 35 hr | |
| Apr 2, 3:52 AM CDT | Small Craft Advisory | MKX | 35 hr | |
| Apr 4, 7:38 PM CDT | Special Weather Statement | ARX | Crawford | 52 min |
| Apr 4, 8:28 PM CDT | Special Weather Statement | ARX | Crawford | 47 min |
| Apr 4, 9:19 PM CDT | Special Weather Statement | ARX | Grant | 41 min |
| Apr 5, 2:27 AM CDT | Special Weather Statement | GRB | Kewaunee, Manitowoc | 48 min |
| Apr 5, 7:12 PM CDT | Special Weather Statement | DLH | Ashland | 18 min |
| Apr 5, 7:15 PM CDT | Special Weather Statement | DLH | Sawyer | 15 min |
| Apr 5, 7:29 PM CDT | Special Weather Statement | DLH | Ashland | 16 min |
| Apr 5, 7:44 PM CDT | Special Weather Statement | DLH | Ashland | 16 min |
| Apr 5, 7:59 PM CDT | Special Weather Statement | DLH | Iron | 16 min |
| Apr 5, 7:59 PM CDT | Special Weather Statement | MQT | Iron | 31 min |
| Apr 5, 8:02 PM CDT | Special Weather Statement | DLH | Douglas | 13 min |
| Apr 5, 8:16 PM CDT | Special Weather Statement | DLH | Douglas | 14 min |
| Apr 5, 9:13 PM CDT | Special Weather Statement | GRB | Vilas | 62 min |
| Apr 5, 9:18 PM CDT | Special Weather Statement | DLH | Iron | 12 min |
| Apr 5, 9:42 PM CDT | Special Weather Statement | DLH | Sawyer | 18 min |
| Apr 5, 9:54 PM CDT | Special Weather Statement | DLH | Washburn | 21 min |
| Apr 5, 10:06 PM CDT | Special Weather Statement | DLH | Sawyer | 9 min |
| Apr 5, 10:17 PM CDT | Special Weather Statement | DLH | Sawyer | 13 min |
| Apr 5, 10:51 PM CDT | Special Weather Statement | GRB | Oneida, Vilas | 84 min |
| Apr 5, 11:13 PM CDT | Special Weather Statement | DLH | Douglas | 17 min |
| Apr 5, 11:35 PM CDT | Special Weather Statement | DLH | Douglas | 10 min |
| Apr 5, 11:41 PM CDT | Special Weather Statement | GRB | Forest | 49 min |
| Apr 5, 11:47 PM CDT | Special Weather Statement | DLH | Douglas | 13 min |
| Apr 5, 11:49 PM CDT | Special Weather Statement | MPX | Pierce, Saint Croix | 41 min |
| Apr 6, 12:02 AM CDT | Special Weather Statement | DLH | Douglas | 13 min |
| Apr 6, 12:28 AM CDT | Special Weather Statement | GRB | Langlade | 47 min |
| Apr 6, 1:07 AM CDT | Special Weather Statement | GRB | Langlade | 53 min |
| Apr 6, 1:44 AM CDT | Special Weather Statement | GRB | Langlade | 46 min |
| Apr 6, 2:20 AM CDT | Special Weather Statement | ARX | Clark, Jackson | 55 min |
| Apr 6, 2:31 AM CDT | Special Weather Statement | GRB | Marinette | 59 min |
| Apr 6, 2:40 AM CDT | Special Weather Statement | GRB | Portage, Wood | 95 min |
| Apr 6, 3:18 AM CDT | Special Weather Statement | DLH | Douglas | 27 min |
| Apr 6, 3:48 AM CDT | Special Weather Statement | GRB | Menominee, Oconto, Portage, Shawano, Waupaca | 42 min |
| Apr 6, 3:52 AM CDT | Severe Thunderstorm Warning | GRB | Outagamie, Portage, Waupaca | 53 min |
| Apr 6, 4:41 AM CDT | Special Weather Statement | GRB | Outagamie, Waupaca | 64 min |
| Apr 6, 6:48 AM CDT | Special Weather Statement | GRB | Shawano | 42 min |
| Apr 6, 7:34 AM CDT | Special Weather Statement | GRB | Brown, Outagamie | 41 min |
| Apr 6, 8:00 AM CDT | Special Weather Statement | GRB | Brown | 45 min |
| Apr 6, 8:45 AM CDT | Special Weather Statement | GRB | Calumet, Kewaunee, Manitowoc | 60 min |
| Apr 6, 3:34 PM CDT | Special Weather Statement | GRB | Marathon, Portage, Winnebago | 41 min |
| Apr 6, 4:23 PM CDT | Special Weather Statement | GRB | Calumet, Outagamie, Shawano | 37 min |
| Apr 6, 5:33 PM CDT | Special Weather Statement | GRB | Langlade, Lincoln, Menominee, Shawano | 57 min |
| Apr 6, 6:19 PM CDT | Severe Thunderstorm Warning | GRB | Langlade, Menominee, Oconto | 16 min |
| Apr 6, 6:23 PM CDT | Special Weather Statement | GRB | Marinette | 52 min |
| Apr 6, 6:44 PM CDT | Special Weather Statement | GRB | Marathon | 46 min |
| Apr 6, 7:38 PM CDT | Special Weather Statement | GRB | Shawano | 52 min |
| Apr 6, 7:56 PM CDT | Special Weather Statement | GRB | Florence, Forest | 49 min |
| Apr 6, 9:27 PM CDT | Special Weather Statement | GRB | Langlade, Lincoln, Menominee | 48 min |
| Apr 6, 10:43 PM CDT | Special Weather Statement | GRB | Langlade | 47 min |
| Apr 7, 2:50 PM CDT | Special Weather Statement | MKX | Walworth | 25 min |
| Apr 7, 3:14 PM CDT | Special Weather Statement | MKX | Waukesha | 46 min |
| Apr 7, 3:36 PM CDT | Special Weather Statement | MKX | Dodge | 24 min |
| Apr 7, 3:45 PM CDT | Special Weather Statement | MKX | Waukesha | 30 min |
| Apr 7, 3:47 PM CDT | Special Weather Statement | GRB | Calumet, Winnebago | 43 min |
| Apr 7, 3:59 PM CDT | Special Weather Statement | MKX | Dodge, Fond du Lac, Washington, Waukesha | 61 min |
| Apr 7, 4:05 PM CDT | Special Weather Statement | LOT | Kenosha | 25 min |
| Apr 7, 4:13 PM CDT | Special Weather Statement | MKX | Kenosha | 32 min |
| Apr 7, 4:40 PM CDT | Special Weather Statement | MKX | Kenosha, Milwaukee, Racine | 35 min |
| Apr 7, 4:54 PM CDT | Special Weather Statement | GRB | Calumet, Outagamie | 66 min |
| Apr 7, 5:36 PM CDT | Special Weather Statement | GRB | Brown, Calumet, Outagamie | 69 min |
| Apr 7, 10:05 PM CDT | Special Weather Statement | GRB | Brown, Calumet, Manitowoc, Outagamie, Waushara, Winnebago | 70 min |
| Apr 8, 1:39 PM CDT | Marine Dense Fog Advisory | MKX | 17 hr | |
| Apr 8, 4:19 PM CDT | Marine Dense Fog Advisory | GRB | 11 hr | |
| Apr 8, 8:04 PM CDT | Special Weather Statement | GRB | Marinette, Oconto | 41 min |
| Apr 8, 11:55 PM CDT | Dense Fog Advisory | DLH | Bayfield, Douglas | 15 hr |
| Apr 9, 11:00 AM CDT | Marine Dense Fog Advisory | GRB | 14 hr | |
| Apr 9, 2:34 PM CDT | Small Craft Advisory | MKX | 40 hr | |
| Apr 9, 3:00 PM CDT | Small Craft Advisory | GRB | 43 hr | |
| Apr 10, 3:03 AM CDT | Marine Dense Fog Advisory | GRB | 19 hr | |
| Apr 10, 3:18 AM CDT | Marine Dense Fog Advisory | MKX | 33 hr | |
| Apr 11, 5:57 AM CDT | Marine Dense Fog Advisory | GRB | 33 hr | |
| Apr 12, 2:44 AM CDT | Marine Dense Fog Advisory | MKX | 10 hr | |
| Apr 14, 3:01 AM CDT | Small Craft Advisory | MKX | 34 hr | |
| Apr 14, 4:24 AM CDT | Small Craft Advisory | GRB | 33 hr | |
| Apr 18, 2:08 PM CDT | Gale Warning | MKX | 36 hr | |
| Apr 18, 9:20 PM CDT | Small Craft Advisory | GRB | 28 hr | |
| Apr 22, 10:14 AM CDT | Small Craft Advisory | GRB | 16 hr | |
| Apr 24, 2:59 AM CDT | Small Craft Advisory | MKX | 31 hr | |
| Apr 24, 3:05 AM CDT | Small Craft Advisory | GRB | 28 hr | |
| Apr 25, 2:32 PM CDT | Winter Weather Advisory | GRB | Florence, Forest, Langlade, Lincoln, Marinette, Oconto and 2 more | 21 hr |
| Apr 25, 3:24 PM CDT | Small Craft Advisory | GRB | 40 hr | |
| Apr 25, 8:24 PM CDT | Winter Weather Advisory | DLH | Ashland, Iron, Price | 21 hr |
| Apr 25, 8:48 PM CDT | Small Craft Advisory | MKX | 34 hr | |
| Apr 27, 12:26 AM CDT | Severe Thunderstorm Warning | ARX | Buffalo, Trempealeau | 49 min |
| Apr 27, 1:13 AM CDT | Severe Thunderstorm Warning | ARX | Buffalo, Jackson, Trempealeau | 47 min |
| Apr 27, 1:25 AM CDT | Special Weather Statement | ARX | La Crosse | 20 min |
| Apr 27, 1:49 AM CDT | Severe Thunderstorm Warning | ARX | La Crosse | 41 min |
| Apr 27, 2:16 AM CDT | Special Weather Statement | ARX | Jackson | 59 min |
| Apr 27, 2:33 AM CDT | Special Weather Statement | ARX | Buffalo, Trempealeau | 57 min |
| Apr 27, 3:24 AM CDT | Special Weather Statement | ARX | Adams | 36 min |
| Apr 27, 3:44 AM CDT | Special Weather Statement | ARX | Clark | 46 min |
| Apr 27, 4:35 AM CDT | Special Weather Statement | ARX | Taylor | 40 min |
| Apr 27, 4:50 AM CDT | Special Weather Statement | DLH | Price | 25 min |
| Apr 27, 5:10 AM CDT | Special Weather Statement | GRB | Langlade, Lincoln | 65 min |
| Apr 27, 5:33 AM CDT | Special Weather Statement | GRB | Forest, Langlade, Menominee | 42 min |
| Apr 27, 6:13 AM CDT | Special Weather Statement | GRB | Marinette, Menominee, Oconto | 47 min |
| Apr 27, 10:01 AM CDT | Special Weather Statement | GRB | Marinette | 44 min |
| Apr 27, 10:36 AM CDT | Special Weather Statement | GRB | Marinette | 54 min |
| Apr 27, 10:43 AM CDT | Severe Thunderstorm Warning | GRB | Marinette, Oconto | 47 min |
| Apr 27, 11:05 AM CDT | Mesoscale Discussion | SPC | Clark, Door, Eau Claire, Langlade, Marathon, Marinette and 3 more | 2 hr |
| Apr 27, 11:50 AM CDT | Areal Flood Advisory | GRB | Marinette, Menominee, Oconto | 3 hr |
| Apr 27, 12:00 PM CDT | Severe Thunderstorm Warning | GRB | Marinette | 22 min |
| Apr 27, 12:20 PM CDT | Special Weather Statement | GRB | Menominee | 40 min |
| Apr 27, 1:41 PM CDT | Special Weather Statement | GRB | Door | 49 min |
| Apr 27, 4:34 PM CDT | Small Craft Advisory | MKX | 3 hr | |
| Apr 27, 5:20 PM CDT | Special Weather Statement | ARX | Trempealeau | 55 min |
| Apr 27, 6:16 PM CDT | Areal Flood Advisory | GRB | Langlade, Marinette, Menominee, Oconto | 3 hr |
| Apr 27, 6:41 PM CDT | Special Weather Statement | GRB | Langlade, Lincoln, Marathon, Wood | 64 min |
| Apr 27, 7:17 PM CDT | Special Weather Statement | GRB | Langlade, Marathon, Menominee | 43 min |
| Apr 27, 8:24 PM CDT | Mesoscale Discussion | SPC | Adams, Brown, Buffalo, Calumet, Columbia, Crawford and 22 more | 2 hr |
| Apr 27, 8:26 PM CDT | Special Weather Statement | ARX | Jackson | 64 min |
| Apr 27, 9:02 PM CDT | Special Weather Statement | GRB | Wood | 43 min |
| Apr 27, 10:24 PM CDT | Special Weather Statement | GRB | Portage | 51 min |
| Apr 27, 10:33 PM CDT | Special Weather Statement | ARX | Juneau | 42 min |
| Apr 27, 11:09 PM CDT | Special Weather Statement | GRB | Outagamie, Waupaca | 51 min |
| Apr 27, 11:28 PM CDT | Special Weather Statement | GRB | Waushara | 47 min |
| Apr 27, 11:58 PM CDT | Special Weather Statement | GRB | Brown, Outagamie | 47 min |
| Apr 28, 12:11 AM CDT | Special Weather Statement | GRB | Winnebago | 34 min |
| Apr 28, 12:44 AM CDT | Special Weather Statement | GRB | Brown, Outagamie | 46 min |
| Apr 28, 1:10 AM CDT | Special Weather Statement | GRB | Calumet, Winnebago | 50 min |
| Apr 28, 1:13 AM CDT | Special Weather Statement | GRB | Brown | 32 min |
| Apr 28, 1:55 AM CDT | Special Weather Statement | GRB | Manitowoc | 20 min |
| Apr 28, 2:22 AM CDT | Small Craft Advisory | MKX | 11 hr | |
| Apr 28, 2:36 AM CDT | Small Craft Advisory | GRB | 10 hr | |
| Apr 29, 2:54 PM CDT | Gale Watch | MKX | 24 hr | |
| Apr 29, 4:17 PM CDT | Special Weather Statement | GRB | Manitowoc | 28 min |
| Apr 29, 4:28 PM CDT | Special Marine Warning | GRB | 77 min | |
| Apr 29, 4:28 PM CDT | Special Marine Warning | MKX | 3 hr | |
| Apr 29, 4:32 PM CDT | Special Weather Statement | MKX | Dodge | 43 min |
| Apr 29, 4:41 PM CDT | Special Weather Statement | MKX | Dodge, Ozaukee, Washington | 34 min |
| Apr 29, 5:10 PM CDT | Special Weather Statement | MKX | Jefferson, Kenosha, Milwaukee, Rock, Walworth, Waukesha | 65 min |
| Apr 29, 5:49 PM CDT | Special Weather Statement | MKX | Milwaukee, Racine | 26 min |
| Apr 29, 6:30 PM CDT | Special Weather Statement | MKX | Kenosha | 30 min |
| Apr 29, 9:04 PM CDT | Small Craft Advisory | MKX | 17 hr | |
| Apr 29, 9:07 PM CDT | Small Craft Advisory | GRB | 15 hr | |
| Apr 30, 2:10 PM CDT | Fire Weather Watch | ARX | Adams, Crawford, Grant, Jackson, Juneau, La Crosse and 3 more | 14 hr |
| Apr 30, 2:47 PM CDT | Gale Warning | GRB | 28 hr | |
| Apr 30, 2:48 PM CDT | Gale Warning | MKX | 29 hr | |
| Apr 30, 2:49 PM CDT | Wind Advisory | MKX | Dane, Dodge, Fond du Lac, Green, Jefferson, Kenosha and 8 more | 28 hr |
| Apr 30, 3:02 PM CDT | Fire Weather Watch | MKX | Columbia, Dane, Dodge, Fond du Lac, Green, Green Lake and 14 more | 13 hr |
| Apr 30, 3:20 PM CDT | Fire Weather Watch | GRB | Marathon, Portage, Waupaca, Waushara, Wood | 13 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 |
| Mesoscale Discussion | 2 |
| Special Weather Statement | 95 |
| Flooding | |
| Areal Flood Advisory | 2 |
| Winter | |
| Winter Weather Advisory | 2 |
| Wind and dust | |
| Wind Advisory | 1 |
| Fire | |
| Fire Weather Watch | 3 |
| Fog and smoke | |
| Dense Fog Advisory | 1 |
| Marine | |
| Gale Warning | 3 |
| Special Marine Warning | 2 |
| Gale Watch | 1 |
| Marine Dense Fog Advisory | 7 |
| Small Craft Advisory | 19 |
By county
Every county with at least one alert. A county page lists each alert that covered it.
- Langlade County14
- Marinette County12
- Menominee County11
- Outagamie County11
- Oconto County9
- Douglas County8
- Brown County8
- Calumet County8
- Portage County7
- Dodge County7
- Kenosha County7
- Manitowoc County6
- Jackson County6
- Shawano County6
- Waupaca County6
- Marathon County6
- Winnebago County6
- Waukesha County6
- Wood County5
- Lincoln County5
- Washington County5
- Milwaukee County5
- Trempealeau County5
- Crawford County4
- Ashland County4
- Sawyer County4
- Iron County4
- Forest County4
- Walworth County4
- Fond du Lac County4
- Racine County4
- Waushara County4
- Buffalo County4
- La Crosse County4
- Ozaukee County4
- Vilas County3
- Clark County3
- Adams County3
- Juneau County3
- Sheboygan County3
25 more counties
- Jefferson County3
- Rock County3
- Grant County2
- Kewaunee County2
- Oneida County2
- Florence County2
- Price County2
- Door County2
- Columbia County2
- Green Lake County2
- Marquette County2
- Monroe County2
- Richland County2
- Sauk County2
- Vernon County2
- Dane County2
- Green County2
- Washburn County1
- Pierce County1
- Saint Croix County1
- Bayfield County1
- Taylor County1
- Eau Claire County1
- Iowa County1
- Lafayette County1
Nearby
Alerts in force nowTornadoes on recordThe radar archive20202022
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. Rebuilt daily.