Small Craft Advisory
URGENT - MARINE WEATHER MESSAGE
National Weather Service Duluth MN
831 PM CDT Thu Aug 21 2025
LSZ121-140>148-150-221345-
/O.NEW.KDLH.SC.Y.0089.250823T0300Z-250824T0300Z/
Chequamegon Bay-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-
831 PM CDT Thu Aug 21 2025
...SMALL CRAFT ADVISORY IN EFFECT FROM FRIDAY NIGHT TO SATURDAY
EVENING...
* WHAT...West winds 10 to 15 kt with gusts up to 25 kt and waves
2 to 4 ft expected.
* WHERE...All Nearshore Waters of Western Lake Superior.
* WHEN...From Friday night to Saturday evening.
* IMPACTS...Conditions will be hazardous to small craft.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Anyone operating a smaller vessel should avoid navigating in
hazardous conditions.
&&
$$
Hazardous Weather Outlook
Hazardous Weather Outlook
National Weather Service Duluth MN
833 PM CDT Thu Aug 21 2025
LSZ121-140>148-150-230145-
Bayfield to Oak Point WI-Grand Portage to Grand Marais MN-
Grand Marais to Taconite Harbor MN-
Taconite Harbor to Silver Bay Harbor MN-
Silver Bay Harbor to Two Harbors MN-Two Harbors to Duluth MN-
Duluth MN to Port Wing WI-Port Wing to Sand Island WI-
Sand Island to Bayfield WI-Oak Point to Saxon Harbor WI-
Outer Apostle Islands Beyond 5 NM from Mainland-
833 PM CDT Thu Aug 21 2025
This Hazardous Weather Outlook is for portions of Lake Superior
and the Nearshore waters of western Lake Superior.
.DAY ONE...Tonight
Isolated thunderstorms are possible tonight.
.DAYS TWO THROUGH SEVEN...Friday through Wednesday
Strong to severe thunderstorms are possible Friday.
Increased westerly winds will create conditions hazardous to
small craft early Saturday into Monday. Small Craft Advisories
are in effect.
$$
NLy
More information may be obtained at the following web address:
http://www.weather.gov/duluth
Hazardous Weather Outlook
National Weather Service Duluth MN
833 PM CDT Thu Aug 21 2025
MNZ010>012-018>021-025-026-033>038-WIZ001>004-006>009-230145-
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-
833 PM CDT Thu Aug 21 2025
This Hazardous Weather Outlook is for portions of northeast
Minnesota and northwest Wisconsin.
.DAY ONE...Tonight
Isolated thunderstorms are possible tonight mainly in northern
Minnesota.
.DAYS TWO THROUGH SEVEN...Friday through Wednesday
Strong to severe thunderstorms are possible Friday.
.SPOTTER INFORMATION STATEMENT...
Skywarn spotters are encouraged to report hail of any size and
rainfall amounts to the National Weather Service.
$$
Hazardous Weather Outlook
National Weather Service Grand Forks ND
528 PM CDT Thu Aug 21 2025
MNZ001>003-005-006-008-009-013>017-022>024-027>032-040-NDZ039-053-
222230-
West Polk-Norman-Clay-Roseau-Lake Of The Woods-East Marshall-
North Beltrami-Pennington-Red Lake-East Polk-North Clearwater-
South Beltrami-Mahnomen-South Clearwater-Hubbard-West Becker-
East Becker-Wilkin-West Otter Tail-East Otter Tail-Wadena-Grant-
Cass-Richland-
528 PM CDT Thu Aug 21 2025
This hazardous weather outlook is for portions of eastern North
Dakota, west central and northwest Minnesota.
.DAY ONE...Tonight
There is a level 2 out of 5 risk for severe thunderstorms this
afternoon and evening for southeast North Dakota and northwest
Minnesota and late afternoon and evening southeast North Dakota
and west central Minnesota. The main hazards will be potential for
wind gusts to 75 mph and hail to golf ball size. There is a low a
low probability for isolated tornadoes.
.DAYS TWO THROUGH SEVEN...Friday through Wednesday
The probability for widespread hazardous weather is low.
.SPOTTER INFORMATION STATEMENT...
Spotter activation may be required today.
$$
Hazardous Weather Outlook
National Weather Service Twin Cities/Chanhassen MN
304 PM CDT Thu Aug 21 2025
MNZ041>045-047>070-073>078-082>085-091>093-WIZ014>016-023>028-
222015-
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-
304 PM CDT Thu Aug 21 2025
This Hazardous Weather Outlook is for portions of central and
southern Minnesota, and west central Wisconsin.
.DAY ONE...Tonight.
Isolated strong to severe thunderstorms are possible tonight into
Friday morning.
.DAYS TWO THROUGH SEVEN...Friday through Wednesday.
Isolated thunderstorms will redevelop across portions of the Twin
Cities, southern Minnesota, and western Wisconsin on Friday.
.SPOTTER INFORMATION STATEMENT...
SKYWARN spotter activation may be needed late tonight and Friday.
$$
jrb
Hazardous Weather Outlook
National Weather Service Marquette MI
358 PM EDT Thu Aug 21 2025
LSZ162-240>251-263>267-222000-
Lake Superior west of a line from Saxon Harbor WI to Grand
Portage MN beyond 5NM-Saxon Harbor WI to Black River MI-
Black River to Ontonagon MI-
Ontonagon to Upper Entrance of Portage Canal MI-
Upper Entrance of Portage Canal to Eagle River MI-
Eagle River to Manitou Island MI-
Manitou Island to Point Isabelle MI-
Point Isabelle to Lower Entrance of Portage Canal MI-
Lower Entrance of Portage Canal To Huron Islands MI Including
Keweenaw and Huron Bays-Huron Islands to Marquette MI-
Marquette to Munising MI-Munising to Grand Marais MI-
Grand Marais to Whitefish Point MI-
Lake Superior from Saxon Harbor WI to Upper Entrance to Portage
Canal MI 5NM off shore to the US/Canadian border including Isle
Royale National Park-
Lake Superior from Upper Entrance to Portage Canal to Manitou
Island MI 5NM off shore to the US/Canadian Border-
Lake Superior West of Line from Manitou Island to Marquette MI
Beyond 5NM from shore-
Lake Superior East of a line from Manitou Island to Marquette MI
and West of a line from Grand Marais MI to the US/Canadian Border
Beyond 5NM from shore-
Lake Superior from Grand Marais MI to Whitefish Point MI 5NM off
shore to the US/Canadian border-
358 PM EDT Thu Aug 21 2025 /258 PM CDT Thu Aug 21 2025/
This Hazardous Weather Outlook is for portions of Central Lake
Superior...Eastern Lake Superior and Western Lake Superior.
.DAY ONE...Tonight
Areas of dense fog are possible.
.DAYS TWO THROUGH SEVEN...Friday through Wednesday
Isolated thunderstorm chances Friday. Some may bring hail and
strong, erratic winds (5-14 percent chance).
A seasonably strong system moving north of the Great Lakes
will bring hazardous marine conditions to Lake Superior this
weekend; gales up to 35 knots are possible (30 to 40% chance).
.SPOTTER INFORMATION STATEMENT...
The need for weather spotter reports is not anticipated at this
time.
$$
Hazardous Weather Outlook
National Weather Service Marquette MI
358 PM EDT Thu Aug 21 2025
MIZ001>007-009>014-084-085-222000-
Keweenaw-Ontonagon-Northern Houghton-Baraga-Marquette-Alger-Luce-
Gogebic-Iron-Dickinson-Menominee-Delta-Southern Schoolcraft-
Southern Houghton-Northern Schoolcraft-
358 PM EDT Thu Aug 21 2025 /258 PM CDT Thu Aug 21 2025/
This Hazardous Weather Outlook is for portions of central Upper
Michigan and western Upper Michigan.
.DAY ONE...Tonight
Patchy dense fog is possible.
.DAYS TWO THROUGH SEVEN...Friday through Wednesday
Thunderstorm chances are expected Friday PM. Some may be strong
to severe, with the SPC issuing a Marginal Risk (category 1 of 5)
for 5-14 percent chances of damaging wind and hail.
.SPOTTER INFORMATION STATEMENT...
The need for weather spotter reports is not anticipated at this
time.
$$
Hazardous Weather Outlook
National Weather Service Green Bay WI
227 PM CDT Thu Aug 21 2025
WIZ005-010>013-018>022-030-031-035>040-045-048>050-073-074-221930-
Vilas-Oneida-Forest-Florence-Northern Marinette County-Lincoln-
Langlade-Menominee-Northern Oconto County-Door-Marathon-Shawano-
Wood-Portage-Waupaca-Outagamie-Brown-Kewaunee-Waushara-Winnebago-
Calumet-Manitowoc-Southern Marinette County-
Southern Oconto County-
227 PM CDT Thu Aug 21 2025
This Hazardous Weather Outlook is for north-central and northeast
Wisconsin.
.DAY ONE...Tonight
Patchy fog is possible late tonight, especially over central
Wisconsin.
.DAYS TWO THROUGH SEVEN...Friday through Thursday
Patchy fog is possible early Friday morning, especially over
central Wisconsin.
Thunderstorms will be possible at times Friday afternoon through
Friday night, then again Sunday afternoon. Isolated strong to
severe storms are possible, especially over north-central
Wisconsin Friday afternoon into Friday evening.
.SPOTTER INFORMATION STATEMENT...
Spotter activation will not be needed tonight.
$$
