Winter Weather Monitor

406
FLUS43 KGRB 010807
HWOGRB

Hazardous Weather Outlook
National Weather Service Green Bay WI
307 AM CDT Wed Jul 1 2026

WIZ005-010>013-018>022-030-031-035>040-045-048>050-073-074-020815-
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-
307 AM CDT Wed Jul 1 2026

This Hazardous Weather Outlook is for north-central and northeast
Wisconsin.

.DAY ONE...Today and Tonight

Heat Advisories for east-central and far northeast Wisconsin,
including the lakeshore areas is in effect from 11 AM to 8 PM
today, where heat index values up to 104 degrees are forecast.

Isolated strong thunderstorms are possible this morning. The main
hazards are damaging winds, large hail, and heavy rainfall.
Additional thunderstorms are expected this afternoon into tonight
and may result in a higher-end severe risk with the potential for
damaging straight-line winds over 70 mph, hail up to golf-ball
size, and isolated tornadoes. Isolated flash flooding instances
are also possible.

.DAYS TWO THROUGH SEVEN...Thursday through Tuesday

Daytime heat index values will be near 100 degrees on Thursday,
especially over east-central Wisconsin. A Heat Advisory may be
needed.

Periodic chances for thunderstorms will continue through the
holiday weekend. A few storms on Thursday could be strong to
severe. Heavy rain could also occur.

.SPOTTER INFORMATION STATEMENT...

Spotters are requested to report peak wind gusts, hail, and any
flooding to the National Weather Service in Green Bay. Spotter
activation may be needed on Thursday.

$$

LMZ521-522-541>543-020815-
The Bay of Green Bay south of a line from Cedar River MI to Rock
Island Passage-Lake Michigan from Washington Island to Sheboygan-
307 AM CDT Wed Jul 1 2026

This Hazardous Weather Outlook is for portions of northwest Lake
Michigan and the waters of Green Bay.

.DAY ONE...Today and Tonight

There is a chance for thunderstorms throughout the day and night.
Some storms may become severe with damaging straight-line wind
gusts and large hail. Any thunderstorm would pose a hazard to
mariners.

.DAYS TWO THROUGH SEVEN...Thursday through Tuesday

Periodic chances for thunderstorms will continue through the
holiday weekend. Storms occurring Thursday could be strong to
severe. Any thunderstorm would pose a hazard to mariners.

$$

Kruk