Hazardous Weather Outlook
Hazardous Weather Outlook
National Weather Service Chicago/Romeoville IL
426 AM CDT Tue Jul 15 2025
ILZ003>006-008-010>013-019>021-023-032-033-039-103>108-INZ001-002-
010-011-019-160930-
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-
426 AM CDT Tue Jul 15 2025 /526 AM EDT Tue Jul 15 2025/
This Hazardous Weather Outlook is for portions of north central
Illinois...northeast Illinois and northwest Indiana.
.DAY ONE...Today and Tonight.
Weather hazards expected...
Limited Thunderstorm Risk south of I-80.
DISCUSSION...
Widely scattered thunderstorms are expected this afternoon into
early this evening. Where there is a slight chance of
thunderstorms as far north as I-80, the greatest coverage of
storms will likely be near and south of Highway 24.
.DAYS TWO THROUGH SEVEN...Wednesday through Monday.
Wednesday afternoon and evening...
Elevated Thunderstorm Risk...with an associated:
Level 2 of 5 Severe Thunderstorm Risk.
Elevated Flooding Risk.
Limited Excessive Heat Risk.
Thursday...
Limited Thunderstorm Risk south of I-80.
Limited Flooding Risk well south of I-80.
Saturday...
Elevated Flooding Risk.
Limited Thunderstorm Risk.
Sunday and Monday...
Limited Thunderstorm Risk.
DISCUSSION...
Peak heat indices Wednesday afternoon are expected to be around
100 degrees.
Thunderstorms are likely Wednesday afternoon into Wednesday
evening, mainly across northern Illinois. There is the threat that
some of the storms could become severe, posing a risk of locally
damaging winds. In addition, thunderstorms will be capable of
producing torrential downpours which could lead localized flash
flooding.
There will be periodic bouts of showers and thunderstorms
Saturday through Monday. Any one of which could produce very heavy
rainfall and flooding.
.SPOTTER INFORMATION STATEMENT...
Spotter activation will not be necessary through tonight.
GENERAL STORM MOTION OF THE DAY:
Moving toward the northwest at around 20 mph.
$$
Hazardous Weather Outlook
National Weather Service Quad Cities IA IL
346 AM CDT Tue Jul 15 2025
IAZ040>042-051>054-063>068-076>078-087>089-098-099-ILZ001-002-007-
009-015>018-024>026-034-035-MOZ009-010-160900-
Buchanan-Delaware-Dubuque-Benton-Linn-Jones-Jackson-Iowa-Johnson-
Cedar-Clinton-Muscatine-Scott-Keokuk-Washington-Louisa-Jefferson-
Henry IA-Des Moines-Van Buren-Lee-Jo Daviess-Stephenson-Carroll-
Whiteside-Rock Island-Henry IL-Bureau-Putnam-Mercer-Henderson-
Warren-Hancock-McDonough-Scotland-Clark-
346 AM CDT Tue Jul 15 2025
This Hazardous Weather Outlook is for portions of north central
Illinois...northwest Illinois...west central Illinois...east
central Iowa...northeast Iowa...southeast Iowa and northeast
Missouri.
.DAY ONE...TODAY AND TONIGHT
Very warm and humid conditions are expected today, with afternoon
heat index readings in the middle 90s.
Some area rivers are experiencing flooding. Please see the latest
Flood Statements and Flood Warnings for details.
.DAYS TWO THROUGH SEVEN...WEDNESDAY THROUGH MONDAY
Very warm and humid conditions are expected Wednesday, with
afternoon heat index values in the upper 90s and low 100s.
There is a Slight (level 2 out of 5) Risk for severe storms
Wednesday afternoon and evening along and east of a line from
Dubuque to Tipton. Damaging winds, heavy rain, and a low risk for
tornadoes will be the primary threats.
There will be periodic chances of thunderstorms Thursday through
Sunday. It is too soon to determine the threat for severe weather.
.SPOTTER INFORMATION STATEMENT...
Spotter activation will not be needed today or tonight.
$$
GROSS
Hazardous Weather Outlook
National Weather Service Green Bay WI
343 AM CDT Tue Jul 15 2025
LMZ521-522-541>543-160845-
The Bay of Green Bay south of a line from Cedar River MI to Rock
Island Passage-Lake Michigan from Washington Island to Sheboygan-
343 AM CDT Tue Jul 15 2025
This Hazardous Weather Outlook is for portions of northwest Lake
Michigan and the waters of Green Bay.
.DAY ONE...Today and Tonight
Isolated thunderstorms are possible this evening. Any
thunderstorm would pose a threat to mariners.
.DAYS TWO THROUGH SEVEN...Wednesday through Monday
Thunderstorms will be possible at times Wednesday through
Thursday. The greatest risk for storms will occur Wednesday into
Wednesday evening. Any thunderstorm would pose a threat to
mariners.
Thunderstorms are possible Saturday into early next week. Any
storms would pose a hazard to mariners.
$$
Kurimski/KLJ
Hazardous Weather Outlook
National Weather Service Green Bay WI
343 AM CDT Tue Jul 15 2025
WIZ005-010>013-018>022-030-031-035>040-045-048>050-073-074-160845-
Vilas-Oneida-Forest-Florence-Northern Marinette County-Lincoln-
Langlade-Menominee-Northern Oconto County-Door-Marathon-Shawano-
Wood-Portage-Waupaca-Outagamie-Brown-Kewaunee-Waushara-Winnebago-
Calumet-Manitowoc-Southern Marinette County-
Southern Oconto County-
343 AM CDT Tue Jul 15 2025
This Hazardous Weather Outlook is for north-central and northeast
Wisconsin.
.DAY ONE...Today and Tonight
Isolated showers and thunderstorms are possible this morning
across far northern Wisconsin. These storms are not expected to be
severe.
Scattered thunderstorms are expected late this afternoon through
tonight over northern Wisconsin. A few storms may be severe
this evening over north-central Wisconsin. Damaging winds and
large hail will be the main severe hazards, with heavy rain also
possible.
.DAYS TWO THROUGH SEVEN...Wednesday through Monday
Additional thunderstorms are expected Wednesday and Wednesday
evening. There is a risk for severe storms along with heavy
rainfall.
There are on and off chances for thunderstorms from Saturday
through early next week. It is too early to determine if or when
any severe storms are possible.
.SPOTTER INFORMATION STATEMENT...
Spotters are requested to report any wind damage or hail to the
National Weather Service in Green Bay.
$$
Hazardous Weather Outlook
National Weather Service La Crosse WI
310 AM CDT Tue Jul 15 2025
IAZ008>011-018-019-029-030-MNZ079-086>088-094>096-WIZ017-029-
032>034-041>044-053>055-061-161215-
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-
310 AM CDT Tue Jul 15 2025
This Hazardous Weather Outlook is for portions of southeast
Minnesota...northeast Iowa and southwest into central Wisconsin.
.DAY ONE...Today and Tonight
Thunderstorms will be possible late tonight, primarily for
portions of both southeast Minnesota and west central Wisconsin. A
stronger storm cannot be ruled out.
.DAYS TWO THROUGH SEVEN...Wednesday through Monday
Thunderstorms will be possible Wednesday and few of these could
be strong to severe. Heavy rainfall could lead to localized
flooding on Wednesday.
.SPOTTER INFORMATION STATEMENT...
No action needed.
.EMERGENCY MANAGEMENT COORDINATION...
No webinar is scheduled.
$$
Cecava
