Hazardous Weather Outlook
Hazardous Weather Outlook
National Weather Service Duluth MN
528 PM CDT Mon Aug 31 2026
LSZ121-140>148-150-012230-
Bayfield to Oak Point WI-Grand Portage to Grand Marais MN-
Grand Marais to Taconite Harbor MN-
Taconite Harbor to Silver Bay Harbor MN-
Silver Bay Harbor to Two Harbors MN-Two Harbors to Duluth MN-
Duluth MN to Port Wing WI-Port Wing to Sand Island WI-
Sand Island to Bayfield WI-Oak Point to Saxon Harbor WI-
Outer Apostle Islands Beyond 5 NM from Mainland-
528 PM CDT Mon Aug 31 2026
This Hazardous Weather Outlook is for portions of Lake Superior
and the Nearshore waters of western Lake Superior.
.DAY ONE...Tonight
Areas of dense fog continue over portions of the Nearshore
waters. See the latest Marine Weather message for specific timing
details.
.DAYS TWO THROUGH SEVEN...Tuesday through Sunday
Strong southwest winds Tuesday may lead to hazardous conditions
for small craft, especially along portions of the North Shore and
possibly the Apostle Islands.
Strong northeast winds may develop over the southwest arm of Lake
Superior Thursday, Friday, and Saturday and could pose a risk to
smaller vessels.
$$
Huyck
More information may be obtained at the following web address:
http://www.weather.gov/duluth
Hazardous Weather Outlook
National Weather Service Duluth MN
528 PM CDT Mon Aug 31 2026
MNZ010>012-018>021-025-026-033>038-WIZ001>004-006>009-012230-
Koochiching-North St. Louis-Northern Cook/Northern Lake-
North Itasca-Central St. Louis-Southern Lake/North Shore-
Southern Cook/North Shore-North Cass-South Itasca-South Cass-
Crow Wing-Northern Aitkin-South Aitkin-Carlton/South St. Louis-
Pine-Douglas-Bayfield-Ashland-Iron-Burnett-Washburn-Sawyer-Price-
528 PM CDT Mon Aug 31 2026
This Hazardous Weather Outlook is for portions of northeast
Minnesota and northwest Wisconsin.
.DAY ONE...Tonight
There is a 5-10% chance of a few thunderstorms over portions of
northwest Wisconsin this evening east of a line from Hayward to
Ashland. If storms develop, they may become strong to severe. Hail
up to ping pong ball size is the main threat with any storms
which develop.
Areas of fog are forecast tonight and could become locally dense
in spots in the I-35 and US-53 corridors.
.DAYS TWO THROUGH SEVEN...Tuesday through Sunday
Fog dissipates early Tuesday morning.
Several rounds of thunderstorms are forecast Tuesday night
through Labor Day weekend. There is a small chance of a few strong
to severe storms Thursday afternoon through Thursday night.
Strong northeast winds over western Lake Superior will create a
risk of rip currents at the beaches of the Twin Ports Thursday,
Friday, and Saturday.
.SPOTTER INFORMATION STATEMENT...
Skywarn spotter activation is not anticipated tonight.
$$
Hazardous Weather Outlook
National Weather Service La Crosse WI
135 PM CDT Mon Aug 31 2026
IAZ008>011-018-019-029-030-MNZ079-086>088-094>096-WIZ017-029-
032>034-041>044-053>055-061-012245-
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-
135 PM CDT Mon Aug 31 2026
This Hazardous Weather Outlook is for portions of southeast
Minnesota...northeast Iowa and southwest into central Wisconsin.
.DAY ONE...This Afternoon and Tonight
Strong thunderstorms are possible this afternoon and evening,
mainly north of I-90 and east of the Mississippi River.
.DAYS TWO THROUGH SEVEN...Tuesday through Sunday
Strong thunderstorms are possible over northeast Iowa and
southwest Wisconsin Tuesday afternoon.
.SPOTTER INFORMATION STATEMENT...
No action needed.
.EMERGENCY MANAGEMENT COORDINATION...
No webinar is scheduled.
$$
Hazardous Weather Outlook
National Weather Service Des Moines IA
439 AM CDT Mon Aug 31 2026
IAZ004>007-015>017-023>028-033>039-044>050-057-058-070-071-081-
092-011500-
Emmet-Kossuth-Winnebago-Worth-Palo Alto-Hancock-Cerro Gordo-
Pocahontas-Humboldt-Wright-Franklin-Butler-Bremer-Sac-Calhoun-
Webster-Hamilton-Hardin-Grundy-Black Hawk-Crawford-Carroll-Greene-
Boone-Story-Marshall-Tama-Audubon-Guthrie-Cass-Adair-Adams-Taylor-
439 AM CDT Mon Aug 31 2026
This Hazardous Weather Outlook is for portions of central Iowa.
.DAY ONE...Today and tonight
Hot and humid conditions will bring the Heat Index up into the 90s
today.
Isolated thunderstorms are expected today and tonight. The threat
of severe weather is generally low, a strong storm or two cannot
be ruled out.
.DAYS TWO THROUGH SEVEN...Tuesday through Sunday
Hot and humid conditions will bring the Heat Index up into the 90s
most days this week.
Thunderstorm chances are forecast at times this week, mainly
during the overnight and morning hours. The threat of severe
weather is generally low, but a few strong storms cannot be ruled
out.
.SPOTTER INFORMATION STATEMENT...
Spotter activation is not anticipated.
&&
NWS Des Moines will discontinue the Hazardous Weather Outlook
product (HWO) on September 30th, 2026. Weather hazards and
outlooks will continue to be provided through the standard
forecast channels, including weather briefing packets, forecast
discussions, weather story graphics, the experimental graphical
hazardous weather outlook, and updated hazard messaging. All
local products and visual tools are accessible directly at
weather.gov/desmoines.
$$
