Hazardous Weather Outlook
Hazardous Weather Outlook
National Weather Service Green Bay WI
1230 PM CDT Sat Aug 15 2026
WIZ005-010>013-018>022-030-031-035>040-045-048>050-073-074-161730-
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-
1230 PM CDT Sat Aug 15 2026
This Hazardous Weather Outlook is for north-central and northeast
Wisconsin.
.DAY ONE...Tonight
Gusty winds will lead to high waves and dangerous currents along
the Lake Michigan shoreline south of Two Rivers through this
evening.
There is a slight chance for thunderstorms late this afternoon
through tonight. Lightning and brief heavy downpours will be
possible.
.DAYS TWO THROUGH SEVEN...Sunday through Saturday
An isolated thunderstorm will be possible Sunday afternoon mainly from
east-central Wisconsin into Door County.
The next chance for more widespread thunderstorms will be Tuesday
afternoon into Wednesday morning. Confidence in storm severity is
low, though locally heavy rain could occur.
.SPOTTER INFORMATION STATEMENT...
Spotter activation will not be needed tonight.
$$
Hazardous Weather Outlook
National Weather Service Des Moines IA
1036 AM CDT Sat Aug 15 2026
IAZ004>007-015>017-023>028-033>039-044>050-057>062-070>075-
081>086-092>097-161500-
Emmet-Kossuth-Winnebago-Worth-Palo Alto-Hancock-Cerro Gordo-
Pocahontas-Humboldt-Wright-Franklin-Butler-Bremer-Sac-Calhoun-
Webster-Hamilton-Hardin-Grundy-Black Hawk-Crawford-Carroll-Greene-
Boone-Story-Marshall-Tama-Audubon-Guthrie-Dallas-Polk-Jasper-
Poweshiek-Cass-Adair-Madison-Warren-Marion-Mahaska-Adams-Union-
Clarke-Lucas-Monroe-Wapello-Taylor-Ringgold-Decatur-Wayne-
Appanoose-Davis-
1036 AM CDT Sat Aug 15 2026
This Hazardous Weather Outlook is for portions of central Iowa.
.DAY ONE...Today and tonight
Scattered thunderstorms are expected later today into tonight. A
few strong to severe storms will be possible, mainly across the
southern half of Iowa, with isolated damaging wind gusts being the
primary threat along with locally heavy rain.
.DAYS TWO THROUGH SEVEN...Sunday through Friday
A slight chance of thunderstorms is forecast across southern Iowa
on Sunday. Severe weather is unlikely. More widespread
thunderstorm chances then return from Monday night into Wednesday.
Any severe weather threats during that time will be determined in
the coming days.
.SPOTTER INFORMATION STATEMENT...
Severe weather and rainfall reports are appreciated.
$$
Hazardous Weather Outlook
National Weather Service Milwaukee/Sullivan WI
604 AM CDT Sat Aug 15 2026
WIZ046-047-051-052-056>060-062>072-161115-
Marquette-Green Lake-Fond du Lac-Sheboygan-Sauk-Columbia-Dodge-
Washington-Ozaukee-Iowa-Dane-Jefferson-Waukesha-Milwaukee-
Lafayette-Green-Rock-Walworth-Racine-Kenosha-
604 AM CDT Sat Aug 15 2026
This Hazardous Weather Outlook is for portions of east central
Wisconsin, south central Wisconsin and southeast Wisconsin.
.DAY ONE...Today and Tonight
Scattered showers possible along and south of I-94 this morning.
Additional shower and storm chances return overnight.
High swim risk for Milwaukee, Ozaukee and Sheboygan County
beaches today through 7 PM.
.DAYS TWO THROUGH SEVEN...Sunday through Friday
Thunderstorm chances return midweek.
.SPOTTER INFORMATION STATEMENT...
Spotter activation will not be needed.
$$
Hazardous Weather Outlook
National Weather Service Duluth MN
353 AM CDT Sat Aug 15 2026
MNZ010>012-018>021-025-026-033>038-WIZ001>004-006>009-160900-
Koochiching-North St. Louis-Northern Cook/Northern Lake-
North Itasca-Central St. Louis-Southern Lake/North Shore-
Southern Cook/North Shore-North Cass-South Itasca-South Cass-
Crow Wing-Northern Aitkin-South Aitkin-Carlton/South St. Louis-
Pine-Douglas-Bayfield-Ashland-Iron-Burnett-Washburn-Sawyer-Price-
353 AM CDT Sat Aug 15 2026
This Hazardous Weather Outlook is for portions of northeast
Minnesota and northwest Wisconsin.
.DAY ONE...Today and Tonight
Isolated, non-severe, thunderstorms will be possible today
through this evening.
Breezy northeast winds will increase the threat of rip currents
today near the Twin Ports, including the beaches of Duluth and
Superior.
.DAYS TWO THROUGH SEVEN...Sunday through Friday
There will be additional thunderstorm chances early next week.
Widespread severe weather is not expected, but a few strong to
severe storms are possible late Monday into Tuesday.
.SPOTTER INFORMATION STATEMENT...
Skywarn spotter activation will not be needed today or tonight.
$$
Hazardous Weather Outlook
National Weather Service Quad Cities IA IL
316 AM CDT Sat Aug 15 2026
IAZ040>042-051>054-063>068-076>078-087>089-098-099-ILZ001-002-007-
009-015>018-024>026-034-035-MOZ009-010-160830-
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-
316 AM CDT Sat Aug 15 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
Rounds of heavy rain producing storms will continue into early
Saturday morning. There will also be a low end severe threat in
storms south of Interstate 80, with isolated severe gusts being
the main concern. Very heavy rainfall and flash flooding will be
the primary concern, especially where storms move repeatedly
over the same area. Significant flash flooding is possible,
especially in urban areas and in counties that saw excessive
amounts of rain last night. Several area rivers will be on the
rise and have the potential to reach bankfull or even flood stage
over the weekend and into early next week.
Between the episodes of storms, high heat and humidity may
produce dangerous Heat Index readings near or over 100 degrees
Saturday afternoon south of Highway 34 in southeast Iowa.
More rounds of showers and storms are possible tonight into
Sunday morning. Heavy rainfall and lightning will be the primary
threats with any storm, with a low end severe threat for isolated
severe wind gusts as well.
.DAYS TWO THROUGH SEVEN...SUNDAY THROUGH FRIDAY
We may see some residual showers and storms Sunday morning,
largely posing a heavy rainfall and localized flash flood threat.
Tuesday night into Wednesday, a system will bring the chance for
strong to severe storms. The Storm Prediction Center has
highlighted much of our area in a Day 4 Slight Risk for severe
storms, or level 2 of 5 risk.
.SPOTTER INFORMATION STATEMENT...
Spotter activation is likely through Saturday morning and then
again Saturday night. Reports of flooding would also be
appreciated.
$$
ERVIN/GUNKEL
Hazardous Weather Outlook
National Weather Service Chicago/Romeoville IL
301 AM CDT Sat Aug 15 2026
ILZ003>006-008-010>013-019>021-023-032-033-039-103>108-INZ001-002-
010-011-019-160815-
Winnebago-Boone-McHenry-Lake IL-Ogle-Lee-De Kalb-Kane-DuPage-
La Salle-Kendall-Grundy-Kankakee-Livingston-Iroquois-Ford-
Northern Cook-Central Cook-Southern Cook-Northern Will-
Southern Will-Eastern Will-Lake IN-Porter-Newton-Jasper-Benton-
301 AM CDT Sat Aug 15 2026 /401 AM EDT Sat Aug 15 2026/
This Hazardous Weather Outlook is for portions of north central
Illinois...northeast Illinois and northwest Indiana.
.DAY ONE...Today and Tonight.
Weather hazards expected...
Significant Flooding Risk south of Interstate 80 this morning.
Limited Thunderstorm Risk...with an associated:
Level 1 of 5 Damaging Wind Risk...up to 60 mph.
DISCUSSION...
Showers and thunderstorms will continue across northern Illinois
and northwest Indiana through the morning. Torrential rainfall is
occurring with these storms, especially south of interstate 80,
which could lead to flash flooding. Locally gusty winds cannot be
ruled out either with storms this morning.
Another period of showers and thunderstorms is expected with a
cold front tonight into Sunday. These storms may also produce
heavy downpours and locally gusty winds.
.DAYS TWO THROUGH SEVEN...Sunday through Friday.
Sunday...
Limited Flooding Risk.
Limited Thunderstorm Risk...with an associated:
Level 1 of 5 Severe Thunderstorm Risk.
Tuesday Night and Wednesday...
Elevated Flooding Risk.
Limited Thunderstorm Risk.
DISCUSSION...
A strong to locally severe storm cannot be ruled out Sunday,
mainly in the morning. Additional storm chances are expected
Tuesday night into Wednesday.
.SPOTTER INFORMATION STATEMENT...
Spotters may be needed for flash flooding reports this morning.
GENERAL STORM MOTION OF THE DAY:
Moving toward the east at 30 mph.
$$
