Severe Thunderstorm Watch
SEVERE THUNDERSTORM WATCH OUTLINE UPDATE FOR WS 546
NWS STORM PREDICTION CENTER NORMAN OK
945 AM CDT SUN AUG 9 2026
SEVERE THUNDERSTORM WATCH 546 IS IN EFFECT UNTIL 200 PM CDT
FOR THE FOLLOWING LOCATIONS
ILC097-111-091900-
/O.NEW.KWNS.SV.A.0546.260809T1445Z-260809T1900Z/
IL
. ILLINOIS COUNTIES INCLUDED ARE
LAKE MCHENRY
$$
SEVERE THUNDERSTORM WATCH OUTLINE UPDATE FOR WS 546
NWS STORM PREDICTION CENTER NORMAN OK
945 AM CDT SUN AUG 9 2026
SEVERE THUNDERSTORM WATCH 546 IS IN EFFECT UNTIL 200 PM CDT
FOR THE FOLLOWING LOCATIONS
WIC027-039-055-059-079-089-101-105-117-127-131-133-091900-
/O.NEW.KWNS.SV.A.0546.260809T1445Z-260809T1900Z/
WI
. WISCONSIN COUNTIES INCLUDED ARE
DODGE FOND DU LAC JEFFERSON
KENOSHA MILWAUKEE OZAUKEE
RACINE ROCK SHEBOYGAN
WALWORTH WASHINGTON WAUKESHA
$$
Hazardous Weather Outlook
Hazardous Weather Outlook
National Weather Service Duluth MN
1143 AM CDT Sun Aug 9 2026
MNZ010>012-018>021-025-026-033>038-WIZ001>004-006>009-101645-
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-
1143 AM CDT Sun Aug 9 2026
This Hazardous Weather Outlook is for portions of northeast
Minnesota and northwest Wisconsin.
.DAY ONE...This afternoon and Tonight
Non severe thunderstorms are possible this afternoon in northwest
Wisconsin.
.DAYS TWO THROUGH SEVEN...Monday through Saturday
There will be several chances of thunderstorms this week.
Widespread severe weather is not expected.
.SPOTTER INFORMATION STATEMENT...
Skywarn spotters are encouraged to report hail of any size and
rainfall amounts to the National Weather Service.
$$
Hazardous Weather Outlook
National Weather Service Des Moines IA
644 AM CDT Sun Aug 9 2026
IAZ004>007-015>017-023>028-033>039-044>050-057>062-070>075-
081>086-092>097-101145-
Emmet-Kossuth-Winnebago-Worth-Palo Alto-Hancock-Cerro Gordo-
Pocahontas-Humboldt-Wright-Franklin-Butler-Bremer-Sac-Calhoun-
Webster-Hamilton-Hardin-Grundy-Black Hawk-Crawford-Carroll-Greene-
Boone-Story-Marshall-Tama-Audubon-Guthrie-Dallas-Polk-Jasper-
Poweshiek-Cass-Adair-Madison-Warren-Marion-Mahaska-Adams-Union-
Clarke-Lucas-Monroe-Wapello-Taylor-Ringgold-Decatur-Wayne-
Appanoose-Davis-
644 AM CDT Sun Aug 9 2026
This Hazardous Weather Outlook is for portions of central Iowa.
.DAY ONE...Today and tonight
There is a Slight (Level 2 of 5) Risk for severe weather across
portions of Iowa. Damaging wind gusts and large hail are the
primary threats.
There is a Marginal (Level 1 of 4) Risk for excessive rainfall
across much of Iowa today.
.DAYS TWO THROUGH SEVEN...Monday through Saturday
Additional chances for showers and thunderstorms continue through
the week. Severe weather and excessive rainfall are possible at
times from Monday through Thursday.
.SPOTTER INFORMATION STATEMENT...
Spotter activation will not be needed, but any storm reports are
appreciated.
$$
Hazardous Weather Outlook
National Weather Service Milwaukee/Sullivan WI
608 AM CDT Sun Aug 9 2026
WIZ046-047-051-052-056>060-062>072-101115-
Marquette-Green Lake-Fond du Lac-Sheboygan-Sauk-Columbia-Dodge-
Washington-Ozaukee-Iowa-Dane-Jefferson-Waukesha-Milwaukee-
Lafayette-Green-Rock-Walworth-Racine-Kenosha-
608 AM CDT Sun Aug 9 2026
This Hazardous Weather Outlook is for portions of east central
Wisconsin, south central Wisconsin and southeast Wisconsin.
.DAY ONE...Today and Tonight
A morning round of storms is expected followed by a potential
evening round of storms today. Some storms may be strong to
severe. Heavy rainfall is expected with localized flooding
possible mainly for the evening round potential.
.DAYS TWO THROUGH SEVEN...Monday through Saturday
Additional rain and storm chances persist through mid next week.
.SPOTTER INFORMATION STATEMENT...
Spotter activation may be needed at times.
$$
Hazardous Weather Outlook
National Weather Service Quad Cities IA IL
458 AM CDT Sun Aug 9 2026
IAZ040>042-051>054-063>068-076>078-087>089-098-099-ILZ001-002-007-
009-015>018-024>026-034-035-MOZ009-010-101100-
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-
458 AM CDT Sun Aug 9 2026
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
Several rounds of thunderstorms are possible today and into this
evening. There is a chance for severe storms especially from late
morning into the afternoon. Damaging winds will be the primary
threat, but large hail and a few tornadoes are also possible. The
Storm Prediction Center has placed much of the OutLook Area in a
Slight(Level 2 of 5) Risk for severe weather today. Locally heavy
rainfall and flash flooding will also be possible in areas with
repeated storm activity.
Dangerous heat and humidity will develop along and south of the
Interstate 80 corridor by this afternoon with heat indices
surpassing the 100 degree mark. A Heat Advisory has been issued
for these areas for this afternoon and evening. Thunderstorms and
clouds may temporarily interrupt the heat at times today.
.DAYS TWO THROUGH SEVEN...MONDAY THROUGH SATURDAY
Rounds of strong to severe storms will again be possible Monday
and Tuesday as the area continues to lay under an active storm
track. Marginal and Slight Risks for severe weather are in effect
for the Outlook Area for both days.
Depending on cloud cover and areas of rain, dangerous heat may
occur again on Monday and Tuesday with heat index readings
approaching or exceeding 100 degrees. Areas most likely for this
heat will be along and south of the Interstate 80 corridor.
.SPOTTER INFORMATION STATEMENT...
There is a good chance that spotter activation will be needed
today.
$$
12
Hazardous Weather Outlook
National Weather Service Chicago/Romeoville IL
430 AM CDT Sun Aug 9 2026
ILZ003>006-008-010>013-019>021-023-032-033-039-103>108-INZ001-002-
010-011-019-100930-
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-
430 AM CDT Sun Aug 9 2026 /530 AM EDT Sun Aug 9 2026/
This Hazardous Weather Outlook is for portions of north central
Illinois...northeast Illinois and northwest Indiana.
.DAY ONE...Today and Tonight.
Weather hazards expected...
Elevated Thunderstorm Risk...with an associated:
Level 1 of 5 Tornado Risk.
Level 2 of 5 Damaging Wind Risk...up to 70 mph.
Level 1 of 5 Large Hail Risk...up to quarter size.
Elevated Flooding Risk.
DISCUSSION...
Showers and thunderstorms are expected to develop into the region
late this morning into this afternoon. A few storms may produce
locally damaging winds and hail to the size of quarters.
Additional thunderstorms may develop this evening, with the
potential to produce additional localized severe weather as well
as locally heavy rainfall which could lead to instances of flash
flooding.
.DAYS TWO THROUGH SEVEN...Monday through Saturday.
Monday and Tuesday...
Elevated Flooding Risk.
Limited Thunderstorm Risk...with an associated:
Level 2 of 5 Severe Thunderstorm Risk.
Wednesday and Thursday...
Limited Flooding Risk.
Limited Thunderstorm Risk.
Friday and Saturday...
Limited Thunderstorm Risk.
DISCUSSION...
Additional rounds of showers and thunderstorms are likely across
the region Monday through at least Wednesday, with a continued
threat of flash flooding and severe weather at times, especially
Monday into Tuesday.
.SPOTTER INFORMATION STATEMENT...
Spotters may be needed this afternoon and this evening.
GENERAL STORM MOTION OF THE DAY:
Moving toward the east-southeast at around 35 mph.
$$
Hazardous Weather Outlook
National Weather Service Twin Cities/Chanhassen MN
411 AM CDT Sun Aug 9 2026
MNZ041>045-047>070-073>078-082>085-091>093-WIZ014>016-023>028-
100900-
Douglas-Todd-Morrison-Mille Lacs-Kanabec-Stevens-Pope-Stearns-
Benton-Sherburne-Isanti-Chisago-Lac Qui Parle-Swift-Chippewa-
Kandiyohi-Meeker-Wright-Hennepin-Anoka-Ramsey-Washington-
Yellow Medicine-Renville-McLeod-Sibley-Carver-Scott-Dakota-
Redwood-Brown-Nicollet-Le Sueur-Rice-Goodhue-Watonwan-Blue Earth-
Waseca-Steele-Martin-Faribault-Freeborn-Polk-Barron-Rusk-
St. Croix-Pierce-Dunn-Pepin-Eau Claire-
411 AM CDT Sun Aug 9 2026
This Hazardous Weather Outlook is for portions of central and
southern Minnesota, and west central Wisconsin.
.DAY ONE...Today and Tonight.
Scattered thunderstorms are expected through late this morning
across much of the coverage area. A few storms may produce hail,
gusty winds, frequent lightning and brief heavy rain. Severe
storms cannot be entirely ruled out but chances are low.
.DAYS TWO THROUGH SEVEN...Monday through Saturday.
Scattered thunderstorms are forecast to develop late Monday night
into early Tuesday morning across much of the coverage area. A
few storms may produce hail, gusty winds, frequent lightning and
brief heavy rain. Severe storms cannot be entirely ruled out but
chances are low.
.SPOTTER INFORMATION STATEMENT...
SKYWARN spotter activation is not expected to be needed.
$$
Hazardous Weather Outlook
National Weather Service La Crosse WI
309 AM CDT Sun Aug 9 2026
IAZ008>011-018-019-029-030-MNZ079-086>088-094>096-WIZ017-029-
032>034-041>044-053>055-061-101215-
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-
309 AM CDT Sun Aug 9 2026
This Hazardous Weather Outlook is for portions of southeast
Minnesota...northeast Iowa and southwest into central Wisconsin.
.DAY ONE...Today and Tonight
Strong to severe will be possible this morning as a cluster of
storms capable of producing damaging wind gusts moves through the
area. Another round of storms will be possible this evening but
will depend heavily on how quickly the morning storms depart.
Evening storms would carry a damaging wind and heavy
rainfall/flooding threat.
.DAYS TWO THROUGH SEVEN...Monday through Saturday
No hazardous weather is expected at this time.
.SPOTTER INFORMATION STATEMENT...
Spotter activation may be needed later today.
.EMERGENCY MANAGEMENT COORDINATION...
No webinar is scheduled.
$$
Hazardous Weather Outlook
National Weather Service Green Bay WI
130 AM CDT Sun Aug 9 2026
WIZ005-010>013-018>022-030-031-035>040-045-048>050-073-074-100630-
Vilas-Oneida-Forest-Florence-Northern Marinette County-Lincoln-
Langlade-Menominee-Northern Oconto County-Door-Marathon-Shawano-
Wood-Portage-Waupaca-Outagamie-Brown-Kewaunee-Waushara-Winnebago-
Calumet-Manitowoc-Southern Marinette County-
Southern Oconto County-
130 AM CDT Sun Aug 9 2026
This Hazardous Weather Outlook is for north-central and northeast
Wisconsin.
.DAY ONE...Today and Tonight
Thunderstorms will be possible this morning through this afternoon.
Though the severe threat is low, gusty winds and heavy rain will
be possible with any storms.
.DAYS TWO THROUGH SEVEN...Sunday through Friday
Several rounds of showers and storms will be possible through
the middle of next week, though confidence in storm severity is
low.
.SPOTTER INFORMATION STATEMENT...
Spotters are requested to report any wind damage or flooding to
the National Weather Service in Green Bay.
$$
