Alert archive / Iowa / Tornado Watches in 2026

Tornado Watch 129

April 17, 20264 states

The Storm Prediction Center issued this tornado watch at Apr 17, 2026, 12:40 PM CDT for 4 states. It was in force for 9 hr.

The area

The outline as issued.

The facts

Issued: Apr 17, 2026, 12:40 PM CDT (17:40 UTC)
Expired: Apr 17, 2026, 10:00 PM CDT
In force: 9 hr
Issued by: the Storm Prediction Center
Largest hail expected: 3.5 in
Strongest gust expected: 60 kt

All 138 counties

Allamakee County, IA, Appanoose County, IA, Benton County, IA, Black Hawk County, IA, Boone County, IA, Bremer County, IA, Buchanan County, IA, Butler County, IA, Cedar County, IA, Cerro Gordo County, IA, Chickasaw County, IA, Clarke County, IA, Clayton County, IA, Clinton County, IA, Dallas County, IA, Davis County, IA, Decatur County, IA, Delaware County, IA, Des Moines County, IA, Dubuque County, IA, Fayette County, IA, Floyd County, IA, Franklin County, IA, Grundy County, IA, Hamilton County, IA, Hardin County, IA, Henry County, IA, Howard County, IA, Iowa County, IA, Jackson County, IA, Jasper County, IA, Jefferson County, IA, Johnson County, IA, Jones County, IA, Keokuk County, IA, Lee County, IA, Linn County, IA, Louisa County, IA, Lucas County, IA, Madison County, IA, Mahaska County, IA, Marion County, IA, Marshall County, IA, Mitchell County, IA, Monroe County, IA, Muscatine County, IA, Polk County, IA, Poweshiek County, IA, Ringgold County, IA, Scott County, IA, Story County, IA, Tama County, IA, Union County, IA, Van Buren County, IA, Wapello County, IA, Warren County, IA, Washington County, IA, Wayne County, IA, Winneshiek County, IA, Worth County, IA, Wright County, IA, Boone County, IL, Bureau County, IL, Carroll County, IL, DeKalb County, IL, Hancock County, IL, Henderson County, IL, Henry County, IL, Jo Daviess County, IL, LaSalle County, IL, Lee County, IL, McDonough County, IL, McHenry County, IL, Mercer County, IL, Ogle County, IL, Putnam County, IL, Rock Island County, IL, Stephenson County, IL, Warren County, IL, Whiteside County, IL, Winnebago County, IL, Dodge County, MN, Fillmore County, MN, Goodhue County, MN, Houston County, MN, Mower County, MN, Olmsted County, MN, Wabasha County, MN, Winona County, MN, Adams County, WI, Brown County, WI, Buffalo County, WI, Calumet County, WI, Clark County, WI, Columbia County, WI, Crawford County, WI, Dane County, WI, Dodge County, WI, Eau Claire County, WI, Fond du Lac County, WI, Grant County, WI, Green County, WI, Green Lake County, WI, Iowa County, WI, Jackson County, WI, Jefferson County, WI, Juneau County, WI, Kenosha County, WI, La Crosse County, WI, Lafayette County, WI, Langlade County, WI, Lincoln County, WI, Marathon County, WI, Marquette County, WI, Menominee County, WI, Milwaukee County, WI, Monroe County, WI, Oconto County, WI, Outagamie County, WI, Ozaukee County, WI, Pepin County, WI, Pierce County, WI, Portage County, WI, Racine County, WI, Richland County, WI, Rock County, WI, Sauk County, WI, Shawano County, WI, Sheboygan County, WI, Trempealeau County, WI, Vernon County, WI, Walworth County, WI, Washington County, WI, Waukesha County, WI, Waupaca County, WI, Waushara County, WI, Winnebago County, WI, Wood County, WI

The radar

The La Crosse radar (KARX), 109 km from the middle of the area, began a volume at 17:42 UTC, the scan nearest the moment this went out.

Open the radar archive at this moment

The archived warnings, watches and discussions in force at that minute are drawn over the scan, this one among them.

What SPC expected

The probabilities SPC published with the watch, for the watch area over its life.

Two or more tornadoes: 60%
One or more EF2 to EF5 tornadoes: 40%
Ten or more severe wind reports: 70%
One or more gusts of 65 knots or more: 20%
Ten or more severe hail reports: 80%
One or more hailstones of 2 inches or more: 60%
Six or more combined severe hail and wind reports: 95%

Warnings issued inside it

209 tornado, severe thunderstorm and flash flood warnings for its counties while it was in force.

Issued	Product	Office	Counties	Lasted
Apr 17, 12:47 PM CDT	Severe Thunderstorm Warning	DVN	Delaware, Dubuque, Jones, Linn	58 min
Apr 17, 12:59 PM CDT	Severe Thunderstorm Warning	DVN	Cedar, Clinton, Jackson, Johnson, Jones, Linn	61 min
Apr 17, 1:10 PM CDT	Severe Thunderstorm Warning	DVN	Jo Daviess	65 min
Apr 17, 1:21 PM CDT	Tornado Warning	ARX	Dodge, Mower	24 min
Apr 17, 1:36 PM CDT	Severe Thunderstorm Warning	ARX	Dodge	8 min
Apr 17, 1:39 PM CDT	Severe Thunderstorm Warning	MPX	Goodhue	36 min
Apr 17, 1:43 PM CDT	Severe Thunderstorm Warning	ARX	Dodge, Olmsted	47 min
Apr 17, 1:45 PM CDT	Tornado Warning	DVN	Dubuque, Jackson	45 min
Apr 17, 1:52 PM CDT	Severe Thunderstorm Warning	DMX	Ringgold, Taylor	38 min
Apr 17, 1:52 PM CDT	Tornado Warning Tornado observed	ARX	Dodge, Mower, Olmsted	53 min
Apr 17, 1:56 PM CDT	Severe Thunderstorm Warning	DVN	Clinton, Dubuque, Jackson, Jones	64 min
Apr 17, 1:57 PM CDT	Severe Thunderstorm Warning	DMX	Jasper, Marshall, Polk, Story	48 min
Apr 17, 2:01 PM CDT	Severe Thunderstorm Warning	DMX	Dallas, Madison, Polk, Warren	29 min
Apr 17, 2:05 PM CDT	Tornado Warning	ARX	Mitchell	40 min
Apr 17, 2:06 PM CDT	Severe Thunderstorm Warning	MPX	Pierce, Saint Croix	33 min
Apr 17, 2:11 PM CDT	Tornado Warning	DVN	Jo Daviess	49 min
Apr 17, 2:11 PM CDT	Severe Thunderstorm Warning	DMX	Bremer, Butler, Franklin, Grundy, Hardin	34 min
Apr 17, 2:14 PM CDT	Tornado Warning	DVN	Jackson	46 min
Apr 17, 2:15 PM CDT	Tornado Warning	ARX	Chickasaw, Floyd, Howard, Mitchell	45 min
Apr 17, 2:23 PM CDT	Flash Flood Warning	DVN	Jo Daviess	6 hr
Apr 17, 2:25 PM CDT	Severe Thunderstorm Warning	DMX	Jasper, Mahaska, Marion, Poweshiek	50 min
Apr 17, 2:29 PM CDT	Severe Thunderstorm Warning	DMX	Jasper, Marshall, Poweshiek, Story, Tama	46 min
Apr 17, 2:32 PM CDT	Tornado Warning Tornado observed	ARX	Olmsted, Wabasha	43 min
Apr 17, 2:33 PM CDT	Tornado Warning	DMX	Jasper, Marshall, Poweshiek, Tama	42 min
Apr 17, 2:35 PM CDT	Severe Thunderstorm Warning Considerable damage threat	DMX	Bremer, Butler	40 min
Apr 17, 2:36 PM CDT	Tornado Warning	ARX	Fillmore	24 min
Apr 17, 2:36 PM CDT	Severe Thunderstorm Warning	ARX	Clark, Taylor	39 min
Apr 17, 2:38 PM CDT	Tornado Warning	DMX	Black Hawk, Bremer, Butler	30 min
Apr 17, 2:41 PM CDT	Tornado Warning Tornado observed	ARX	Olmsted, Wabasha, Winona	49 min
Apr 17, 2:41 PM CDT	Severe Thunderstorm Warning	ARX	Richland	36 min
Apr 17, 2:42 PM CDT	Severe Thunderstorm Warning	MPX	Goodhue	33 min
Apr 17, 2:44 PM CDT	Tornado Warning	ARX	Howard	31 min
Apr 17, 2:44 PM CDT	Severe Thunderstorm Warning	DMX	Jasper, Marshall, Poweshiek	31 min
Apr 17, 2:44 PM CDT	Severe Thunderstorm Warning	MKX	Sauk	46 min
Apr 17, 2:45 PM CDT	Severe Thunderstorm Warning	ARX	Clark, Jackson	30 min
Apr 17, 2:47 PM CDT	Severe Thunderstorm Warning	DMX	Appanoose, Lucas, Mahaska, Marion, Monroe, Wayne	43 min
Apr 17, 2:48 PM CDT	Tornado Warning	DVN	Jo Daviess, Stephenson	42 min
Apr 17, 2:49 PM CDT	Tornado Warning	ARX	Chickasaw, Howard	41 min
Apr 17, 2:53 PM CDT	Severe Thunderstorm Warning	GRB	Marathon, Wood	82 min
Apr 17, 2:57 PM CDT	Severe Thunderstorm Warning	DMX	Clarke, Lucas, Marion, Warren	11 min
Apr 17, 2:57 PM CDT	Tornado Warning	ARX	Richland	18 min
Apr 17, 2:58 PM CDT	Tornado Warning	ARX	Clark, Jackson	35 min
Apr 17, 2:58 PM CDT	Tornado Warning	MKX	Sauk	21 min
Apr 17, 2:59 PM CDT	Severe Thunderstorm Warning	DMX	Decatur, Ringgold, Wayne	46 min
Apr 17, 3:00 PM CDT	Tornado Warning	GRB	Wood	60 min
Apr 17, 3:03 PM CDT	Tornado Warning	DMX	Lucas, Marion, Monroe	11 min
Apr 17, 3:07 PM CDT	Severe Thunderstorm Warning	DMX	Marshall, Tama	38 min
Apr 17, 3:07 PM CDT	Tornado Warning	ARX	Wabasha, Winona	38 min
Apr 17, 3:09 PM CDT	Tornado Warning	ARX	Fillmore	18 min
Apr 17, 3:10 PM CDT	Severe Thunderstorm Warning	DMX	Mahaska, Marion, Poweshiek	50 min
Apr 17, 3:10 PM CDT	Severe Thunderstorm Warning Considerable damage threat	ARX	Adams, Jackson, Juneau, Monroe	50 min
Apr 17, 3:12 PM CDT	Severe Thunderstorm Warning	MKX	Lafayette	18 min
Apr 17, 3:13 PM CDT	Severe Thunderstorm Warning	DMX	Appanoose, Monroe, Wayne	17 min
Apr 17, 3:15 PM CDT	Severe Thunderstorm Warning	DMX	Jasper, Poweshiek	45 min
Apr 17, 3:16 PM CDT	Tornado Warning Tornado observed	DMX	Mahaska, Marion, Monroe	29 min
Apr 17, 3:16 PM CDT	Tornado Warning	DMX	Tama	29 min
Apr 17, 3:24 PM CDT	Tornado Warning	DMX	Poweshiek	39 min
Apr 17, 3:24 PM CDT	Severe Thunderstorm Warning	DVN	Benton, Iowa, Johnson, Linn	66 min
Apr 17, 3:25 PM CDT	Severe Thunderstorm Warning	DVN	Jo Daviess	35 min
Apr 17, 3:26 PM CDT	Severe Thunderstorm Warning	DMX	Mahaska, Monroe, Wapello	64 min
Apr 17, 3:27 PM CDT	Tornado Warning	DVN	Carroll, Jo Daviess, Stephenson	48 min
Apr 17, 3:27 PM CDT	Severe Thunderstorm Warning	GRB	Wood	48 min
Apr 17, 3:28 PM CDT	Severe Thunderstorm Warning	DMX	Appanoose, Wayne	47 min
Apr 17, 3:29 PM CDT	Severe Thunderstorm Warning	DVN	Benton, Buchanan, Iowa, Johnson, Linn	76 min
Apr 17, 3:33 PM CDT	Severe Thunderstorm Warning	MKX	Green, Lafayette	42 min
Apr 17, 3:39 PM CDT	Tornado Warning Tornado observedConsiderable damage threat	ARX	Buffalo, Trempealeau	51 min
Apr 17, 3:39 PM CDT	Severe Thunderstorm Warning	MKX	Lafayette	40 min
Apr 17, 3:41 PM CDT	Tornado Warning	ARX	Buffalo, Trempealeau	49 min
Apr 17, 3:44 PM CDT	Severe Thunderstorm Warning Considerable damage threat	DMX	Poweshiek, Tama	31 min
Apr 17, 3:46 PM CDT	Tornado Warning	ARX	Allamakee, Clayton, Fayette, Winneshiek	44 min
Apr 17, 3:47 PM CDT	Tornado Warning	DVN	Benton, Linn	43 min
Apr 17, 3:48 PM CDT	Tornado Warning	ARX	Allamakee	42 min
Apr 17, 3:52 PM CDT	Severe Thunderstorm Warning	GRB	Marathon, Portage, Wood	53 min
Apr 17, 4:00 PM CDT	Severe Thunderstorm Warning	DVN	Buchanan, Delaware, Dubuque	60 min
Apr 17, 4:00 PM CDT	Flash Flood Warning	MKX	Lafayette	3 hr
Apr 17, 4:01 PM CDT	Severe Thunderstorm Warning	DMX	Appanoose, Davis, Monroe, Wapello	44 min
Apr 17, 4:02 PM CDT	Severe Thunderstorm Warning	DMX	Poweshiek, Tama	15 min
Apr 17, 4:03 PM CDT	Tornado Warning	MKX	Green	42 min
Apr 17, 4:05 PM CDT	Tornado Warning	ARX	Jackson, Trempealeau	40 min
Apr 17, 4:07 PM CDT	Tornado Warning	ARX	Grant	38 min
Apr 17, 4:07 PM CDT	Severe Thunderstorm Warning	MKX	Dane, Green, Iowa, Lafayette	38 min
Apr 17, 4:09 PM CDT	Tornado Warning	DVN	Stephenson	39 min
Apr 17, 4:09 PM CDT	Tornado Warning	LOT	Winnebago	66 min
Apr 17, 4:09 PM CDT	Tornado Warning	ARX	Jackson, Trempealeau	51 min
Apr 17, 4:10 PM CDT	Flash Flood Warning	GRB	Marathon, Wood	5 hr
Apr 17, 4:13 PM CDT	Severe Thunderstorm Warning	DMX	Appanoose, Monroe, Wayne	32 min
Apr 17, 4:13 PM CDT	Severe Thunderstorm Warning	DVN	Henry, Jefferson, Keokuk, Van Buren, Washington	77 min
Apr 17, 4:13 PM CDT	Tornado Warning	MPX	Eau Claire	32 min
Apr 17, 4:16 PM CDT	Severe Thunderstorm Warning	MKX	Green, Lafayette	29 min
Apr 17, 4:17 PM CDT	Tornado Warning	DMX	Davis, Wapello	28 min
Apr 17, 4:18 PM CDT	Tornado Warning	DVN	Buchanan, Delaware, Jones, Linn	42 min
Apr 17, 4:21 PM CDT	Tornado Warning	GRB	Marathon	39 min
Apr 17, 4:22 PM CDT	Tornado Warning	DVN	Jones, Linn	38 min
Apr 17, 4:23 PM CDT	Severe Thunderstorm Warning	DVN	Hancock	54 min
Apr 17, 4:24 PM CDT	Tornado Warning	ARX	Allamakee, Clayton	19 min
Apr 17, 4:24 PM CDT	Severe Thunderstorm Warning	MKX	Columbia, Dane, Green Lake, Iowa, Sauk	66 min
Apr 17, 4:25 PM CDT	Severe Thunderstorm Warning	MKX	Rock	65 min
Apr 17, 4:26 PM CDT	Severe Thunderstorm Warning	DMX	Wapello	19 min
Apr 17, 4:27 PM CDT	Tornado Warning	DVN	Jefferson, Van Buren	48 min
Apr 17, 4:27 PM CDT	Tornado Warning	MKX	Dodge	13 min
Apr 17, 4:30 PM CDT	Tornado Warning	DMX	Davis, Wapello	30 min
Apr 17, 4:30 PM CDT	Tornado Warning Tornado observed	ARX	Clark	27 min
Apr 17, 4:32 PM CDT	Severe Thunderstorm Warning	MKX	Dane, Jefferson	43 min
Apr 17, 4:35 PM CDT	Tornado Warning	ARX	Clark, Jackson	40 min
Apr 17, 4:36 PM CDT	Tornado Warning	DVN	Henry, Jefferson, Keokuk, Washington	54 min
Apr 17, 4:36 PM CDT	Severe Thunderstorm Warning	GRB	Lincoln	39 min
Apr 17, 4:37 PM CDT	Severe Thunderstorm Warning	MKX	Iowa	38 min
Apr 17, 4:40 PM CDT	Severe Thunderstorm Warning	MKX	Dane, Green, Rock	50 min
Apr 17, 4:44 PM CDT	Tornado Warning Tornado observed	GRB	Marathon	32 min
Apr 17, 4:47 PM CDT	Severe Thunderstorm Warning	MKX	Dane, Green, Iowa, Lafayette	22 min
Apr 17, 4:48 PM CDT	Severe Thunderstorm Warning Considerable damage threat	DVN	Dubuque, Jackson, Jones	57 min
Apr 17, 4:48 PM CDT	Tornado Warning	GRB	Lincoln	21 min
Apr 17, 4:50 PM CDT	Severe Thunderstorm Warning	GRB	Langlade, Lincoln	30 min
Apr 17, 4:52 PM CDT	Tornado Warning	GRB	Langlade, Lincoln	30 min
Apr 17, 4:53 PM CDT	Severe Thunderstorm Warning	DVN	Delaware, Dubuque	52 min
Apr 17, 4:54 PM CDT	Tornado Warning	DVN	Delaware, Dubuque, Jackson	66 min
Apr 17, 4:54 PM CDT	Tornado Warning	ARX	Adams, Juneau	18 min
Apr 17, 4:58 PM CDT	Tornado Warning	DVN	Dubuque, Jackson, Jones	62 min
Apr 17, 5:00 PM CDT	Severe Thunderstorm Warning	GRB	Lincoln, Oneida	45 min
Apr 17, 5:02 PM CDT	Severe Thunderstorm Warning	DVN	Stephenson	8 min
Apr 17, 5:06 PM CDT	Tornado Warning Tornado observed	GRB	Langlade, Marathon, Shawano	39 min
Apr 17, 5:07 PM CDT	Tornado Warning Tornado observed	LOT	Boone, Winnebago	30 min
Apr 17, 5:08 PM CDT	Tornado Warning	DVN	Cedar, Johnson, Louisa, Muscatine, Washington	52 min
Apr 17, 5:09 PM CDT	Severe Thunderstorm Warning	MKX	Dane	36 min
Apr 17, 5:09 PM CDT	Severe Thunderstorm Warning Considerable damage threat	MKX	Iowa	51 min
Apr 17, 5:12 PM CDT	Severe Thunderstorm Warning Destructive damage threat	DVN	Cedar, Johnson, Louisa, Muscatine, Washington	63 min
Apr 17, 5:12 PM CDT	Tornado Warning	MKX	Rock	48 min
Apr 17, 5:13 PM CDT	Tornado Warning	ARX	Clark	33 min
Apr 17, 5:14 PM CDT	Tornado Warning	GRB	Wood	61 min
Apr 17, 5:15 PM CDT	Flash Flood Warning	MKX	Green, Lafayette	4 hr
Apr 17, 5:16 PM CDT	Severe Thunderstorm Warning	MKX	Dodge, Jefferson	59 min
Apr 17, 5:19 PM CDT	Severe Thunderstorm Warning	DVN	Lee	41 min
Apr 17, 5:19 PM CDT	Severe Thunderstorm Warning	GRB	Forest, Langlade, Oneida	18 min
Apr 17, 5:19 PM CDT	Flash Flood Warning	MKX	Iowa	3 hr
Apr 17, 5:19 PM CDT	Severe Thunderstorm Warning Considerable damage threat	MKX	Dane	41 min
Apr 17, 5:24 PM CDT	Severe Thunderstorm Warning	ARX	Clark, Jackson	51 min
Apr 17, 5:25 PM CDT	Severe Thunderstorm Warning Considerable damage threat	MKX	Dane, Green, Jefferson, Rock, Walworth, Waukesha	65 min
Apr 17, 5:26 PM CDT	Severe Thunderstorm Warning	DVN	Cedar, Dubuque, Jones, Linn	31 min
Apr 17, 5:27 PM CDT	Severe Thunderstorm Warning Considerable damage threat	DVN	Henderson	63 min
Apr 17, 5:27 PM CDT	Severe Thunderstorm Warning	GRB	Langlade, Marathon, Menominee, Portage, Shawano, Waupaca	37 min
Apr 17, 5:30 PM CDT	Severe Thunderstorm Warning Considerable damage threat	DVN	Carroll, Jo Daviess, Stephenson	75 min
Apr 17, 5:30 PM CDT	Severe Thunderstorm Warning	ARX	Grant	28 min
Apr 17, 5:30 PM CDT	Tornado Warning	GRB	Langlade, Menominee	45 min
Apr 17, 5:33 PM CDT	Severe Thunderstorm Warning Destructive damage threat	MKX	Rock, Walworth	42 min
Apr 17, 5:34 PM CDT	Severe Thunderstorm Warning Considerable damage threat	MKX	Lafayette	41 min
Apr 17, 5:37 PM CDT	Severe Thunderstorm Warning	ARX	Jackson, Monroe	38 min
Apr 17, 5:38 PM CDT	Tornado Warning	MKX	Rock	52 min
Apr 17, 5:43 PM CDT	Tornado Warning	DVN	Cedar, Clinton, Scott	62 min
Apr 17, 5:46 PM CDT	Tornado Warning	DVN	Henderson, Mercer, Warren	24 min
Apr 17, 5:47 PM CDT	Tornado Warning	DVN	Hancock	43 min
Apr 17, 5:48 PM CDT	Tornado Warning	GRB	Shawano	9 min
Apr 17, 5:48 PM CDT	Severe Thunderstorm Warning	MKX	Fond du Lac, Sheboygan, Washington	42 min
Apr 17, 5:51 PM CDT	Severe Thunderstorm Warning Considerable damage threat	DVN	Henry, Mercer, Rock Island	54 min
Apr 17, 5:54 PM CDT	Severe Thunderstorm Warning	MKX	Dodge, Washington	51 min
Apr 17, 5:54 PM CDT	Severe Thunderstorm Warning	MKX	Dane, Green, Iowa	38 min
Apr 17, 5:55 PM CDT	Severe Thunderstorm Warning Considerable damage threat	DVN	Lee	50 min
Apr 17, 6:00 PM CDT	Severe Thunderstorm Warning Considerable damage threat	DVN	Hancock, Henderson, McDonough, Mercer, Rock Island, Warren	60 min
Apr 17, 6:05 PM CDT	Tornado Warning	MKX	Dane	40 min
Apr 17, 6:05 PM CDT	Tornado Warning Tornado observed	MKX	Jefferson, Rock, Waukesha	25 min
Apr 17, 6:06 PM CDT	Severe Thunderstorm Warning Destructive damage threat	DVN	Henry, Rock Island, Whiteside	42 min
Apr 17, 6:06 PM CDT	Tornado Warning	GRB	Langlade, Oconto	28 min
Apr 17, 6:08 PM CDT	Flash Flood Warning	MKX	Green, Rock	3 hr
Apr 17, 6:14 PM CDT	Severe Thunderstorm Warning Considerable damage threat	DVN	Bureau, Henry	76 min
Apr 17, 6:17 PM CDT	Tornado Warning	MKX	Walworth	28 min
Apr 17, 6:24 PM CDT	Severe Thunderstorm Warning	MKX	Dane, Green, Jefferson, Rock	32 min
Apr 17, 6:25 PM CDT	Tornado Warning	DVN	Hancock	65 min
Apr 17, 6:26 PM CDT	Severe Thunderstorm Warning Considerable damage threat	MKX	Dane, Jefferson, Rock, Walworth, Waukesha	64 min
Apr 17, 6:28 PM CDT	Severe Thunderstorm Warning	MKX	Green	28 min
Apr 17, 6:30 PM CDT	Tornado Warning	MKX	Rock	14 min
Apr 17, 6:31 PM CDT	Severe Thunderstorm Warning Considerable damage threat	DVN	Hancock, McDonough	59 min
Apr 17, 6:34 PM CDT	Flash Flood Warning Considerable damage threat	MKX	Rock	3 hr
Apr 17, 6:37 PM CDT	Severe Thunderstorm Warning Considerable damage threat	DVN	Bureau, Carroll, Henry, Rock Island, Whiteside	68 min
Apr 17, 6:39 PM CDT	Severe Thunderstorm Warning	LOT	Ogle, Winnebago	81 min
Apr 17, 6:39 PM CDT	Severe Thunderstorm Warning	MKX	Fond du Lac, Ozaukee, Sheboygan, Washington	51 min
Apr 17, 6:40 PM CDT	Tornado Warning	MKX	Walworth	35 min
Apr 17, 6:42 PM CDT	Severe Thunderstorm Warning	DVN	Carroll, Stephenson	29 min
Apr 17, 6:43 PM CDT	Severe Thunderstorm Warning Considerable damage threat	DVN	Bureau, Henry, Mercer, Rock Island	62 min
Apr 17, 6:45 PM CDT	Tornado Warning	MKX	Dane, Dodge, Jefferson	13 min
Apr 17, 6:51 PM CDT	Tornado Warning	MKX	Walworth	24 min
Apr 17, 6:52 PM CDT	Flash Flood Warning	GRB	Langlade, Marathon, Menominee, Shawano	2 hr
Apr 17, 6:55 PM CDT	Severe Thunderstorm Warning	LOT	Lee	80 min
Apr 17, 6:57 PM CDT	Severe Thunderstorm Warning Considerable damage threat	DVN	Hancock, Henderson, McDonough, Warren	63 min
Apr 17, 7:01 PM CDT	Flash Flood Warning	MKX	Jefferson, Rock, Walworth	2 hr
Apr 17, 7:04 PM CDT	Severe Thunderstorm Warning	MKX	Kenosha, Milwaukee, Racine, Rock, Walworth, Waukesha	71 min
Apr 17, 7:07 PM CDT	Tornado Warning	MKX	Waukesha	19 min
Apr 17, 7:08 PM CDT	Tornado Warning Tornado observed	DVN	Hancock, McDonough	52 min
Apr 17, 7:09 PM CDT	Tornado Warning	LOT	Boone, Winnebago	36 min
Apr 17, 7:11 PM CDT	Tornado Warning	MKX	Kenosha, Racine, Walworth	49 min
Apr 17, 7:16 PM CDT	Severe Thunderstorm Warning Considerable damage threat	LOT	Boone, DeKalb, Kane, McHenry	74 min
Apr 17, 7:23 PM CDT	Severe Thunderstorm Warning Considerable damage threat	MKX	Jefferson, Rock, Walworth, Waukesha	41 min
Apr 17, 7:25 PM CDT	Severe Thunderstorm Warning	MKX	Milwaukee, Ozaukee, Washington, Waukesha	50 min
Apr 17, 7:26 PM CDT	Flash Flood Warning	LOT	Winnebago	4 hr
Apr 17, 7:28 PM CDT	Tornado Warning	LOT	McHenry	47 min
Apr 17, 7:33 PM CDT	Tornado Warning	MKX	Racine, Waukesha	27 min
Apr 17, 7:42 PM CDT	Severe Thunderstorm Warning Considerable damage threat	DVN	Bureau, Putnam	63 min
Apr 17, 7:43 PM CDT	Flash Flood Warning	MKX	Jefferson, Milwaukee, Racine, Walworth, Waukesha	2 hr
Apr 17, 7:44 PM CDT	Tornado Warning	DVN	Bureau, Putnam	61 min
Apr 17, 7:46 PM CDT	Tornado Warning	MKX	Kenosha, Racine, Walworth	59 min
Apr 17, 7:49 PM CDT	Tornado Warning	LOT	DeKalb, Ogle	41 min
Apr 17, 7:56 PM CDT	Tornado Warning	MKX	Milwaukee, Waukesha	38 min
Apr 17, 7:58 PM CDT	Severe Thunderstorm Warning Considerable damage threat	LOT	DeKalb, LaSalle, Lee	77 min
Apr 17, 8:07 PM CDT	Tornado Warning	LOT	LaSalle, Lee	38 min
Apr 17, 8:12 PM CDT	Flash Flood Warning	LOT	Boone, Lake, McHenry	6 hr
Apr 17, 8:12 PM CDT	Severe Thunderstorm Warning Considerable damage threat	MKX	Milwaukee, Waukesha	22 min
Apr 17, 8:29 PM CDT	Severe Thunderstorm Warning Considerable damage threat	LOT	Kane, McHenry	31 min
Apr 17, 8:29 PM CDT	Tornado Warning	LOT	DeKalb, LaSalle	46 min
Apr 17, 8:36 PM CDT	Tornado Warning	LOT	Lake, McHenry	39 min
Apr 17, 8:46 PM CDT	Severe Thunderstorm Warning	DVN	Bureau, Putnam	23 min
Apr 17, 8:46 PM CDT	Tornado Warning	LOT	LaSalle, Livingston	47 min

Discussions around it

SPC mesoscale discussions over the same counties from four hours before the watch to its end.

SPC that day

Everything else SPC issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Apr 17, 11:48 AM CDT	Mesoscale Discussion	SPC	Carroll, Jo Daviess, Ogle, Stephenson, Winnebago	2 hr
Apr 17, 2:05 PM CDT	Mesoscale Discussion	SPC	Jo Daviess	55 min
Apr 17, 3:04 PM CDT	Mesoscale Discussion	SPC	Adams, Bond, Brown, Calhoun, Cass, Christian and 20 more	56 min
Apr 17, 3:31 PM CDT	Tornado Watch	SPC	Adams, Bond, Brown, Calhoun, Cass, Champaign and 50 more	8 hr
Apr 17, 4:42 PM CDT	Mesoscale Discussion	SPC	Boone, Lake, McHenry, Winnebago	2 hr
Apr 17, 6:25 PM CDT	Mesoscale Discussion	SPC	Adams, Boone, Bureau, Carroll, DeKalb, Fulton and 22 more	2 hr
Apr 17, 2:49 PM CDT	Mesoscale Discussion	SPC	Allamakee, Benton, Black Hawk, Bremer, Buchanan, Butler and 24 more	116 min
Apr 17, 3:31 PM CDT	Mesoscale Discussion	SPC	Wayne	89 min
Apr 17, 7:44 AM CDT	Mesoscale Discussion	SPC	Anoka, Blue Earth, Carver, Chisago, Dakota, Dodge and 18 more	91 min
Apr 17, 9:23 AM CDT	Severe Thunderstorm Watch	SPC	Chisago, Dodge, Fillmore, Goodhue, Houston, Mower and 5 more	11 hr
Apr 17, 3:07 PM CDT	Mesoscale Discussion	SPC	Ashland, Barron, Bayfield, Burnett, Chippewa, Douglas and 9 more	53 min
Apr 17, 5:06 PM CDT	Mesoscale Discussion	SPC	Adams, Clark, Forest, Jackson, Langlade, Lincoln and 7 more	114 min

Nearby

Tornado Watches in Iowa, 2026 Tornado Watches in Wisconsin, 2026 Tornado Watches in Illinois, 2026 Every tornado watch in 2026

Sources

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; radar from the NEXRAD Level II archive.