Hazardous Weather Outlook
Hazardous Weather Outlook...CORRECTED
National Weather Service La Crosse WI
217 AM CDT Thu Aug 21 2025
Corrected Days
IAZ008>011-018-019-029-030-MNZ079-086>088-094>096-WIZ017-029-
032>034-041>044-053>055-061-221200-
Mitchell-Howard-Winneshiek-Allamakee-Floyd-Chickasaw-Fayette-
Clayton-Wabasha-Dodge-Olmsted-Winona-Mower-Fillmore-Houston-
Taylor-Clark-Buffalo-Trempealeau-Jackson-La Crosse-Monroe-Juneau-
Adams-Vernon-Crawford-Richland-Grant-
217 AM CDT Thu Aug 21 2025
This Hazardous Weather Outlook is for portions of southeast
Minnesota...northeast Iowa and southwest into central Wisconsin.
.DAY ONE...Today and Tonight
Some locally dense fog could be encountered through 8 am this
morning.
.DAYS TWO THROUGH SEVEN...Friday through Wednesday
There is a chance for thunderstorms Friday and Friday night. Severe
storm chances are low.
.SPOTTER INFORMATION STATEMENT...
No action needed.
.EMERGENCY MANAGEMENT COORDINATION...
No webinar is scheduled.
$$
db
Hazardous Weather Outlook
National Weather Service Duluth MN
320 PM CDT Thu Aug 21 2025
MNZ010>012-018>021-025-026-033>038-WIZ001>004-006>009-222030-
Koochiching-North St. Louis-Northern Cook/Northern Lake-
North Itasca-Central St. Louis-Southern Lake/North Shore-
Southern Cook/North Shore-North Cass-South Itasca-South Cass-
Crow Wing-Northern Aitkin-South Aitkin-Carlton/South St. Louis-
Pine-Douglas-Bayfield-Ashland-Iron-Burnett-Washburn-Sawyer-Price-
320 PM CDT Thu Aug 21 2025
This Hazardous Weather Outlook is for portions of northeast
Minnesota and northwest Wisconsin.
.DAY ONE...This afternoon and Tonight
Strong to severe thunderstorms are possible this evening into
Friday.
.DAYS TWO THROUGH SEVEN...Friday through Wednesday
Strong to severe thunderstorms are possible Friday.
.SPOTTER INFORMATION STATEMENT...
Skywarn spotters are encouraged to report hail of any size and
rainfall amounts to the National Weather Service.
$$
Hazardous Weather Outlook
National Weather Service Twin Cities/Chanhassen MN
304 PM CDT Thu Aug 21 2025
MNZ041>045-047>070-073>078-082>085-091>093-WIZ014>016-023>028-
222015-
Douglas-Todd-Morrison-Mille Lacs-Kanabec-Stevens-Pope-Stearns-
Benton-Sherburne-Isanti-Chisago-Lac Qui Parle-Swift-Chippewa-
Kandiyohi-Meeker-Wright-Hennepin-Anoka-Ramsey-Washington-
Yellow Medicine-Renville-McLeod-Sibley-Carver-Scott-Dakota-
Redwood-Brown-Nicollet-Le Sueur-Rice-Goodhue-Watonwan-Blue Earth-
Waseca-Steele-Martin-Faribault-Freeborn-Polk-Barron-Rusk-
St. Croix-Pierce-Dunn-Pepin-Eau Claire-
304 PM CDT Thu Aug 21 2025
This Hazardous Weather Outlook is for portions of central and
southern Minnesota, and west central Wisconsin.
.DAY ONE...Tonight.
Isolated strong to severe thunderstorms are possible tonight into
Friday morning.
.DAYS TWO THROUGH SEVEN...Friday through Wednesday.
Isolated thunderstorms will redevelop across portions of the Twin
Cities, southern Minnesota, and western Wisconsin on Friday.
.SPOTTER INFORMATION STATEMENT...
SKYWARN spotter activation may be needed late tonight and Friday.
$$
jrb
Hazardous Weather Outlook
National Weather Service Chicago/Romeoville IL
246 PM CDT Thu Aug 21 2025
ILZ003>006-008-010>013-019>021-023-032-033-039-103>108-INZ001-002-
010-011-019-222000-
Winnebago-Boone-McHenry-Lake IL-Ogle-Lee-De Kalb-Kane-DuPage-
La Salle-Kendall-Grundy-Kankakee-Livingston-Iroquois-Ford-
Northern Cook-Central Cook-Southern Cook-Northern Will-
Southern Will-Eastern Will-Lake IN-Porter-Newton-Jasper-Benton-
246 PM CDT Thu Aug 21 2025 /346 PM EDT Thu Aug 21 2025/
This Hazardous Weather Outlook is for portions of north central
Illinois...northeast Illinois and northwest Indiana.
.DAY ONE...Tonight.
Weather hazards expected...
Elevated Fog Risk overnight.
DISCUSSION...
Fog is expected to develop after midnight tonight and persist into
early Friday morning, particularly outside of Chicago. The fog
could become dense and impact travel in some areas through early
Friday morning.
.DAYS TWO THROUGH SEVEN...Friday through Wednesday.
Friday...
Elevated Fog Risk early in the morning.
Saturday...
Limited Thunderstorm Risk.
.SPOTTER INFORMATION STATEMENT...
Spotter activation will not be necessary through tonight.
$$
Hazardous Weather Outlook
National Weather Service Milwaukee/Sullivan WI
239 PM CDT Thu Aug 21 2025
WIZ046-047-051-052-056>060-062>072-221945-
Marquette-Green Lake-Fond du Lac-Sheboygan-Sauk-Columbia-Dodge-
Washington-Ozaukee-Iowa-Dane-Jefferson-Waukesha-Milwaukee-
Lafayette-Green-Rock-Walworth-Racine-Kenosha-
239 PM CDT Thu Aug 21 2025
This Hazardous Weather Outlook is for portions of east central
Wisconsin, south central Wisconsin and southeast Wisconsin.
.DAY ONE...Tonight
Fog is possible over south central Wisconsin later tonight into
early Friday morning, especially west of Interstate 90. Patchy
dense fog may occur in low lying areas and river valleys.
.DAYS TWO THROUGH SEVEN...Friday through Thursday
A few thunderstorms are possible Friday night and early Saturday
morning.
.SPOTTER INFORMATION STATEMENT...
Spotter activation will not be needed.
$$
Hazardous Weather Outlook
National Weather Service Green Bay WI
227 PM CDT Thu Aug 21 2025
WIZ005-010>013-018>022-030-031-035>040-045-048>050-073-074-221930-
Vilas-Oneida-Forest-Florence-Northern Marinette County-Lincoln-
Langlade-Menominee-Northern Oconto County-Door-Marathon-Shawano-
Wood-Portage-Waupaca-Outagamie-Brown-Kewaunee-Waushara-Winnebago-
Calumet-Manitowoc-Southern Marinette County-
Southern Oconto County-
227 PM CDT Thu Aug 21 2025
This Hazardous Weather Outlook is for north-central and northeast
Wisconsin.
.DAY ONE...Tonight
Patchy fog is possible late tonight, especially over central
Wisconsin.
.DAYS TWO THROUGH SEVEN...Friday through Thursday
Patchy fog is possible early Friday morning, especially over
central Wisconsin.
Thunderstorms will be possible at times Friday afternoon through
Friday night, then again Sunday afternoon. Isolated strong to
severe storms are possible, especially over north-central
Wisconsin Friday afternoon into Friday evening.
.SPOTTER INFORMATION STATEMENT...
Spotter activation will not be needed tonight.
$$
Hazardous Weather Outlook
National Weather Service Des Moines IA
904 AM CDT Thu Aug 21 2025
IAZ004>007-015>017-023>028-033>039-044>050-057>062-070>075-
081>086-092>097-221415-
Emmet-Kossuth-Winnebago-Worth-Palo Alto-Hancock-Cerro Gordo-
Pocahontas-Humboldt-Wright-Franklin-Butler-Bremer-Sac-Calhoun-
Webster-Hamilton-Hardin-Grundy-Black Hawk-Crawford-Carroll-Greene-
Boone-Story-Marshall-Tama-Audubon-Guthrie-Dallas-Polk-Jasper-
Poweshiek-Cass-Adair-Madison-Warren-Marion-Mahaska-Adams-Union-
Clarke-Lucas-Monroe-Wapello-Taylor-Ringgold-Decatur-Wayne-
Appanoose-Davis-
904 AM CDT Thu Aug 21 2025
This Hazardous Weather Outlook is for portions of central Iowa.
.DAY ONE...Today and tonight
No hazardous weather is expected for the rest of today.
.DAYS TWO THROUGH SEVEN...Friday through Wednesday
Patchy fog develops again Friday morning, mainly east.
Thunderstorms return to the forecast mainly Friday afternoon
through Friday evening. A few storms may be strong to severe, with
strong winds and hail the primary concerns.
.SPOTTER INFORMATION STATEMENT...
Spotter activation will not be needed.
$$
Hazardous Weather Outlook
National Weather Service Quad Cities IA IL
346 AM CDT Thu Aug 21 2025
IAZ040>042-051>054-063>068-076>078-087>089-098-099-ILZ001-002-007-
009-015>018-024>026-034-035-MOZ009-010-220900-
Buchanan-Delaware-Dubuque-Benton-Linn-Jones-Jackson-Iowa-Johnson-
Cedar-Clinton-Muscatine-Scott-Keokuk-Washington-Louisa-Jefferson-
Henry IA-Des Moines-Van Buren-Lee-Jo Daviess-Stephenson-Carroll-
Whiteside-Rock Island-Henry IL-Bureau-Putnam-Mercer-Henderson-
Warren-Hancock-McDonough-Scotland-Clark-
346 AM CDT Thu Aug 21 2025
This Hazardous Weather Outlook is for portions of north central
Illinois...northwest Illinois...west central Illinois...east
central Iowa...northeast Iowa...southeast Iowa and northeast
Missouri.
.DAY ONE...TODAY AND TONIGHT
Patchy dense fog could impact travel late tonight and early
Friday morning.
.DAYS TWO THROUGH SEVEN...FRIDAY THROUGH WEDNESDAY
Isolated thunderstorms are possible Friday night and early
Saturday.
.SPOTTER INFORMATION STATEMENT...
Spotter activation will not be needed today or tonight.
$$
