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Small Craft Advisory 0091
Issued by the Duluth Forecast Office

Action Issued Starts Expiration
New 2026-08-03 01:53:54 2026-08-03 22:00:00 2026-08-04 08:00:00
New 2026-08-03 01:53:54 2026-08-03 22:00:00 2026-08-04 08:00:00
New 2026-08-03 01:53:54 2026-08-04 01:00:00 2026-08-04 08:00:00
Continued 2026-08-03 11:58:48 2026-08-03 22:00:00 2026-08-04 08:00:00
Continued 2026-08-03 11:58:48 2026-08-04 01:00:00 2026-08-04 08:00:00
Continued 2026-08-03 11:58:48 2026-08-03 22:00:00 2026-08-04 08:00:00
Area Extended 2026-08-04 00:21:24 2026-08-04 01:00:00 2026-08-04 08:00:00
Continued 2026-08-04 00:21:24 2026-08-04 08:00:00
Continued 2026-08-04 00:21:24 2026-08-04 08:00:00
Continued 2026-08-04 00:21:24 2026-08-04 01:00:00 2026-08-04 08:00:00
Expired 2026-08-04 07:37:42 2026-08-04 08:00:00
Expired 2026-08-04 07:37:42 2026-08-04 08:00:00
Expired 2026-08-04 07:37:42 2026-08-04 08:00:00
Expired 2026-08-04 07:37:42 2026-08-04 08:00:00


Action: New
Issued At: 2026-08-03 01:53:54

518 
WHUS73 KDLH 030652
MWWDLH

URGENT - MARINE WEATHER MESSAGE
National Weather Service Duluth MN
152 AM CDT Mon Aug 3 2026

LSZ140-031900-
/O.NEW.KDLH.SC.Y.0091.260804T0600Z-260804T1300Z/
Grand Portage to Grand Marais MN-
152 AM CDT Mon Aug 3 2026

...SMALL CRAFT ADVISORY IN EFFECT FROM 1 AM TO 8 AM CDT TUESDAY...

* WHAT...Southwest winds 10 to 20 kt with gusts up to 30 kt and
  waves 2 to 4 ft expected.

* WHERE...Grand Portage to Grand Marais MN.

* WHEN...From 1 AM to 8 AM CDT Tuesday.

* IMPACTS...Conditions will be hazardous to small craft.


PRECAUTIONARY/PREPAREDNESS ACTIONS...

Anyone operating a smaller vessel should avoid navigating in
hazardous conditions.

&&

$$

LSZ144>146-031900-
/O.NEW.KDLH.SC.Y.0091.260804T0300Z-260804T1300Z/
Two Harbors to Duluth MN-Duluth MN to Port Wing WI-
Port Wing to Sand Island WI-
152 AM CDT Mon Aug 3 2026

...SMALL CRAFT ADVISORY IN EFFECT FROM 10 PM THIS EVENING TO 8 AM
CDT TUESDAY...

* WHAT...Southwest winds 10 to 20 kt with gusts up to 25 kt and 
  waves 1 to 2 ft expected.

* WHERE...Two Harbors to Duluth MN, Duluth MN to Port Wing WI 
  and Port Wing to Sand Island WI.

* WHEN...From 10 PM this evening to 8 AM CDT Tuesday.

* IMPACTS...Conditions will be hazardous to small craft.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Anyone operating a smaller vessel should avoid navigating in
hazardous conditions.

&&

$$

LSZ121-147-148-150-031900-
/O.NEW.KDLH.SC.Y.0091.260804T0300Z-260804T1300Z/
Chequamegon Bay-Bayfield to Oak Point WI-
Sand Island to Bayfield WI-Oak Point to Saxon Harbor WI-
Outer Apostle Islands Beyond 5 NM from Mainland-
152 AM CDT Mon Aug 3 2026

...SMALL CRAFT ADVISORY IN EFFECT FROM 10 PM THIS EVENING TO 8 AM
CDT TUESDAY...

* WHAT...Southwest winds 10 to 20 kt with gusts up to 25 kt and waves
  1 to 2 ft expected.

* WHERE...Chequamegon Bay-Bayfield to Oak Point WI, Sand Island 
  to Bayfield WI, Oak Point to Saxon Harbor WI and Outer Apostle 
  Islands Beyond 5 NM from Mainland.

* WHEN...From 10 PM this evening to 8 AM CDT Tuesday.

* IMPACTS...Conditions will be hazardous to small craft.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Anyone operating a smaller vessel should avoid navigating in
hazardous conditions.

&&

$$


Action: New
Issued At: 2026-08-03 01:53:54

518 
WHUS73 KDLH 030652
MWWDLH

URGENT - MARINE WEATHER MESSAGE
National Weather Service Duluth MN
152 AM CDT Mon Aug 3 2026

LSZ140-031900-
/O.NEW.KDLH.SC.Y.0091.260804T0600Z-260804T1300Z/
Grand Portage to Grand Marais MN-
152 AM CDT Mon Aug 3 2026

...SMALL CRAFT ADVISORY IN EFFECT FROM 1 AM TO 8 AM CDT TUESDAY...

* WHAT...Southwest winds 10 to 20 kt with gusts up to 30 kt and
  waves 2 to 4 ft expected.

* WHERE...Grand Portage to Grand Marais MN.

* WHEN...From 1 AM to 8 AM CDT Tuesday.

* IMPACTS...Conditions will be hazardous to small craft.


PRECAUTIONARY/PREPAREDNESS ACTIONS...

Anyone operating a smaller vessel should avoid navigating in
hazardous conditions.

&&

$$

LSZ144>146-031900-
/O.NEW.KDLH.SC.Y.0091.260804T0300Z-260804T1300Z/
Two Harbors to Duluth MN-Duluth MN to Port Wing WI-
Port Wing to Sand Island WI-
152 AM CDT Mon Aug 3 2026

...SMALL CRAFT ADVISORY IN EFFECT FROM 10 PM THIS EVENING TO 8 AM
CDT TUESDAY...

* WHAT...Southwest winds 10 to 20 kt with gusts up to 25 kt and 
  waves 1 to 2 ft expected.

* WHERE...Two Harbors to Duluth MN, Duluth MN to Port Wing WI 
  and Port Wing to Sand Island WI.

* WHEN...From 10 PM this evening to 8 AM CDT Tuesday.

* IMPACTS...Conditions will be hazardous to small craft.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Anyone operating a smaller vessel should avoid navigating in
hazardous conditions.

&&

$$

LSZ121-147-148-150-031900-
/O.NEW.KDLH.SC.Y.0091.260804T0300Z-260804T1300Z/
Chequamegon Bay-Bayfield to Oak Point WI-
Sand Island to Bayfield WI-Oak Point to Saxon Harbor WI-
Outer Apostle Islands Beyond 5 NM from Mainland-
152 AM CDT Mon Aug 3 2026

...SMALL CRAFT ADVISORY IN EFFECT FROM 10 PM THIS EVENING TO 8 AM
CDT TUESDAY...

* WHAT...Southwest winds 10 to 20 kt with gusts up to 25 kt and waves
  1 to 2 ft expected.

* WHERE...Chequamegon Bay-Bayfield to Oak Point WI, Sand Island 
  to Bayfield WI, Oak Point to Saxon Harbor WI and Outer Apostle 
  Islands Beyond 5 NM from Mainland.

* WHEN...From 10 PM this evening to 8 AM CDT Tuesday.

* IMPACTS...Conditions will be hazardous to small craft.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Anyone operating a smaller vessel should avoid navigating in
hazardous conditions.

&&

$$


Action: New
Issued At: 2026-08-03 01:53:54

518 
WHUS73 KDLH 030652
MWWDLH

URGENT - MARINE WEATHER MESSAGE
National Weather Service Duluth MN
152 AM CDT Mon Aug 3 2026

LSZ140-031900-
/O.NEW.KDLH.SC.Y.0091.260804T0600Z-260804T1300Z/
Grand Portage to Grand Marais MN-
152 AM CDT Mon Aug 3 2026

...SMALL CRAFT ADVISORY IN EFFECT FROM 1 AM TO 8 AM CDT TUESDAY...

* WHAT...Southwest winds 10 to 20 kt with gusts up to 30 kt and
  waves 2 to 4 ft expected.

* WHERE...Grand Portage to Grand Marais MN.

* WHEN...From 1 AM to 8 AM CDT Tuesday.

* IMPACTS...Conditions will be hazardous to small craft.


PRECAUTIONARY/PREPAREDNESS ACTIONS...

Anyone operating a smaller vessel should avoid navigating in
hazardous conditions.

&&

$$

LSZ144>146-031900-
/O.NEW.KDLH.SC.Y.0091.260804T0300Z-260804T1300Z/
Two Harbors to Duluth MN-Duluth MN to Port Wing WI-
Port Wing to Sand Island WI-
152 AM CDT Mon Aug 3 2026

...SMALL CRAFT ADVISORY IN EFFECT FROM 10 PM THIS EVENING TO 8 AM
CDT TUESDAY...

* WHAT...Southwest winds 10 to 20 kt with gusts up to 25 kt and 
  waves 1 to 2 ft expected.

* WHERE...Two Harbors to Duluth MN, Duluth MN to Port Wing WI 
  and Port Wing to Sand Island WI.

* WHEN...From 10 PM this evening to 8 AM CDT Tuesday.

* IMPACTS...Conditions will be hazardous to small craft.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Anyone operating a smaller vessel should avoid navigating in
hazardous conditions.

&&

$$

LSZ121-147-148-150-031900-
/O.NEW.KDLH.SC.Y.0091.260804T0300Z-260804T1300Z/
Chequamegon Bay-Bayfield to Oak Point WI-
Sand Island to Bayfield WI-Oak Point to Saxon Harbor WI-
Outer Apostle Islands Beyond 5 NM from Mainland-
152 AM CDT Mon Aug 3 2026

...SMALL CRAFT ADVISORY IN EFFECT FROM 10 PM THIS EVENING TO 8 AM
CDT TUESDAY...

* WHAT...Southwest winds 10 to 20 kt with gusts up to 25 kt and waves
  1 to 2 ft expected.

* WHERE...Chequamegon Bay-Bayfield to Oak Point WI, Sand Island 
  to Bayfield WI, Oak Point to Saxon Harbor WI and Outer Apostle 
  Islands Beyond 5 NM from Mainland.

* WHEN...From 10 PM this evening to 8 AM CDT Tuesday.

* IMPACTS...Conditions will be hazardous to small craft.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Anyone operating a smaller vessel should avoid navigating in
hazardous conditions.

&&

$$


Action: Continued
Issued At: 2026-08-03 11:58:48

180 
WHUS73 KDLH 031658
MWWDLH

URGENT - MARINE WEATHER MESSAGE
National Weather Service Duluth MN
1158 AM CDT Mon Aug 3 2026

LSZ140-040500-
/O.CON.KDLH.SC.Y.0091.260804T0600Z-260804T1300Z/
Grand Portage to Grand Marais MN-
1158 AM CDT Mon Aug 3 2026

...SMALL CRAFT ADVISORY REMAINS IN EFFECT FROM 1 AM TO 8 AM CDT
TUESDAY...

* WHAT...Southwest winds 10 to 20 kt with gusts up to 30 kt and 
  waves 2 to 4 ft expected.

* WHERE...Grand Portage to Grand Marais MN.

* WHEN...From 1 AM to 8 AM CDT Tuesday.

* IMPACTS...Conditions will be hazardous to small craft.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Anyone operating a smaller vessel should avoid navigating in
hazardous conditions.

&&

$$

LSZ144>146-040500-
/O.CON.KDLH.SC.Y.0091.260804T0300Z-260804T1300Z/
Two Harbors to Duluth MN-Duluth MN to Port Wing WI-
Port Wing to Sand Island WI-
1158 AM CDT Mon Aug 3 2026

...SMALL CRAFT ADVISORY REMAINS IN EFFECT FROM 10 PM THIS EVENING
TO 8 AM CDT TUESDAY...

* WHAT...Southwest winds 10 to 20 kt with gusts up to 25 kt and 
  waves 1 to 2 ft expected.

* WHERE...Two Harbors to Duluth MN, Duluth MN to Port Wing WI 
  and Port Wing to Sand Island WI.

* WHEN...From 10 PM this evening to 8 AM CDT Tuesday.

* IMPACTS...Conditions will be hazardous to small craft.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Anyone operating a smaller vessel should avoid navigating in
hazardous conditions.

&&

$$

LSZ121-147-148-150-040500-
/O.CON.KDLH.SC.Y.0091.260804T0300Z-260804T1300Z/
Chequamegon Bay-Bayfield to Oak Point WI-
Sand Island to Bayfield WI-Oak Point to Saxon Harbor WI-
Outer Apostle Islands Beyond 5 NM from Mainland-
1158 AM CDT Mon Aug 3 2026

...SMALL CRAFT ADVISORY REMAINS IN EFFECT FROM 10 PM THIS EVENING
TO 8 AM CDT TUESDAY...

* WHAT...Southwest winds 10 to 20 kt with gusts up to 25 kt and 
  waves 1 to 2 ft expected.

* WHERE...Chequamegon Bay-Bayfield to Oak Point WI, Sand Island 
  to Bayfield WI, Oak Point to Saxon Harbor WI and Outer Apostle 
  Islands Beyond 5 NM from Mainland.

* WHEN...From 10 PM this evening to 8 AM CDT Tuesday.

* IMPACTS...Conditions will be hazardous to small craft.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Anyone operating a smaller vessel should avoid navigating in
hazardous conditions.

&&

$$


Action: Continued
Issued At: 2026-08-03 11:58:48

180 
WHUS73 KDLH 031658
MWWDLH

URGENT - MARINE WEATHER MESSAGE
National Weather Service Duluth MN
1158 AM CDT Mon Aug 3 2026

LSZ140-040500-
/O.CON.KDLH.SC.Y.0091.260804T0600Z-260804T1300Z/
Grand Portage to Grand Marais MN-
1158 AM CDT Mon Aug 3 2026

...SMALL CRAFT ADVISORY REMAINS IN EFFECT FROM 1 AM TO 8 AM CDT
TUESDAY...

* WHAT...Southwest winds 10 to 20 kt with gusts up to 30 kt and 
  waves 2 to 4 ft expected.

* WHERE...Grand Portage to Grand Marais MN.

* WHEN...From 1 AM to 8 AM CDT Tuesday.

* IMPACTS...Conditions will be hazardous to small craft.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Anyone operating a smaller vessel should avoid navigating in
hazardous conditions.

&&

$$

LSZ144>146-040500-
/O.CON.KDLH.SC.Y.0091.260804T0300Z-260804T1300Z/
Two Harbors to Duluth MN-Duluth MN to Port Wing WI-
Port Wing to Sand Island WI-
1158 AM CDT Mon Aug 3 2026

...SMALL CRAFT ADVISORY REMAINS IN EFFECT FROM 10 PM THIS EVENING
TO 8 AM CDT TUESDAY...

* WHAT...Southwest winds 10 to 20 kt with gusts up to 25 kt and 
  waves 1 to 2 ft expected.

* WHERE...Two Harbors to Duluth MN, Duluth MN to Port Wing WI 
  and Port Wing to Sand Island WI.

* WHEN...From 10 PM this evening to 8 AM CDT Tuesday.

* IMPACTS...Conditions will be hazardous to small craft.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Anyone operating a smaller vessel should avoid navigating in
hazardous conditions.

&&

$$

LSZ121-147-148-150-040500-
/O.CON.KDLH.SC.Y.0091.260804T0300Z-260804T1300Z/
Chequamegon Bay-Bayfield to Oak Point WI-
Sand Island to Bayfield WI-Oak Point to Saxon Harbor WI-
Outer Apostle Islands Beyond 5 NM from Mainland-
1158 AM CDT Mon Aug 3 2026

...SMALL CRAFT ADVISORY REMAINS IN EFFECT FROM 10 PM THIS EVENING
TO 8 AM CDT TUESDAY...

* WHAT...Southwest winds 10 to 20 kt with gusts up to 25 kt and 
  waves 1 to 2 ft expected.

* WHERE...Chequamegon Bay-Bayfield to Oak Point WI, Sand Island 
  to Bayfield WI, Oak Point to Saxon Harbor WI and Outer Apostle 
  Islands Beyond 5 NM from Mainland.

* WHEN...From 10 PM this evening to 8 AM CDT Tuesday.

* IMPACTS...Conditions will be hazardous to small craft.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Anyone operating a smaller vessel should avoid navigating in
hazardous conditions.

&&

$$


Action: Continued
Issued At: 2026-08-03 11:58:48

180 
WHUS73 KDLH 031658
MWWDLH

URGENT - MARINE WEATHER MESSAGE
National Weather Service Duluth MN
1158 AM CDT Mon Aug 3 2026

LSZ140-040500-
/O.CON.KDLH.SC.Y.0091.260804T0600Z-260804T1300Z/
Grand Portage to Grand Marais MN-
1158 AM CDT Mon Aug 3 2026

...SMALL CRAFT ADVISORY REMAINS IN EFFECT FROM 1 AM TO 8 AM CDT
TUESDAY...

* WHAT...Southwest winds 10 to 20 kt with gusts up to 30 kt and 
  waves 2 to 4 ft expected.

* WHERE...Grand Portage to Grand Marais MN.

* WHEN...From 1 AM to 8 AM CDT Tuesday.

* IMPACTS...Conditions will be hazardous to small craft.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Anyone operating a smaller vessel should avoid navigating in
hazardous conditions.

&&

$$

LSZ144>146-040500-
/O.CON.KDLH.SC.Y.0091.260804T0300Z-260804T1300Z/
Two Harbors to Duluth MN-Duluth MN to Port Wing WI-
Port Wing to Sand Island WI-
1158 AM CDT Mon Aug 3 2026

...SMALL CRAFT ADVISORY REMAINS IN EFFECT FROM 10 PM THIS EVENING
TO 8 AM CDT TUESDAY...

* WHAT...Southwest winds 10 to 20 kt with gusts up to 25 kt and 
  waves 1 to 2 ft expected.

* WHERE...Two Harbors to Duluth MN, Duluth MN to Port Wing WI 
  and Port Wing to Sand Island WI.

* WHEN...From 10 PM this evening to 8 AM CDT Tuesday.

* IMPACTS...Conditions will be hazardous to small craft.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Anyone operating a smaller vessel should avoid navigating in
hazardous conditions.

&&

$$

LSZ121-147-148-150-040500-
/O.CON.KDLH.SC.Y.0091.260804T0300Z-260804T1300Z/
Chequamegon Bay-Bayfield to Oak Point WI-
Sand Island to Bayfield WI-Oak Point to Saxon Harbor WI-
Outer Apostle Islands Beyond 5 NM from Mainland-
1158 AM CDT Mon Aug 3 2026

...SMALL CRAFT ADVISORY REMAINS IN EFFECT FROM 10 PM THIS EVENING
TO 8 AM CDT TUESDAY...

* WHAT...Southwest winds 10 to 20 kt with gusts up to 25 kt and 
  waves 1 to 2 ft expected.

* WHERE...Chequamegon Bay-Bayfield to Oak Point WI, Sand Island 
  to Bayfield WI, Oak Point to Saxon Harbor WI and Outer Apostle 
  Islands Beyond 5 NM from Mainland.

* WHEN...From 10 PM this evening to 8 AM CDT Tuesday.

* IMPACTS...Conditions will be hazardous to small craft.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Anyone operating a smaller vessel should avoid navigating in
hazardous conditions.

&&

$$


Action: Area Extended
Issued At: 2026-08-04 00:21:24

887 
WHUS73 KDLH 040520
MWWDLH

URGENT - MARINE WEATHER MESSAGE
National Weather Service Duluth MN
1220 AM CDT Tue Aug 4 2026

LSZ141>143-041300-
/O.EXA.KDLH.SC.Y.0091.260804T0600Z-260804T1300Z/
Grand Marais to Taconite Harbor MN-
Taconite Harbor to Silver Bay Harbor MN-
Silver Bay Harbor to Two Harbors MN-
1220 AM CDT Tue Aug 4 2026

...SMALL CRAFT ADVISORY IN EFFECT UNTIL 8 AM CDT THIS MORNING...

* WHAT...Southwest winds 10 to 20 kt with gusts up to 25 kt and 
  waves 1 to 2 ft expected.

* WHERE...Grand Marais to Taconite Harbor MN, Taconite Harbor to 
  Silver Bay Harbor MN and Silver Bay Harbor to Two Harbors MN.

* WHEN...Until 8 AM CDT this morning.

* IMPACTS...Conditions will be hazardous to small craft.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Anyone operating a smaller vessel should avoid navigating in
hazardous conditions.

&&

$$

LSZ140-041300-
/O.CON.KDLH.SC.Y.0091.260804T0600Z-260804T1300Z/
Grand Portage to Grand Marais MN-
1220 AM CDT Tue Aug 4 2026

...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 8 AM CDT THIS
MORNING...

* WHAT...Southwest winds 10 to 20 kt with gusts up to 30 kt and 
  waves 1 to 4 ft expected.

* WHERE...Grand Portage to Grand Marais MN.

* WHEN...Until 8 AM CDT this morning.

* IMPACTS...Conditions will be hazardous to small craft.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Anyone operating a smaller vessel should avoid navigating in
hazardous conditions.

&&

$$

LSZ144>146-041300-
/O.CON.KDLH.SC.Y.0091.000000T0000Z-260804T1300Z/
Two Harbors to Duluth MN-Duluth MN to Port Wing WI-
Port Wing to Sand Island WI-
1220 AM CDT Tue Aug 4 2026

...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 8 AM CDT THIS
MORNING...

* WHAT...Southwest winds 10 to 20 kt with gusts up to 25 kt and 
  waves 1 to 2 ft.

* WHERE...Two Harbors to Duluth MN, Duluth MN to Port Wing WI 
  and Port Wing to Sand Island WI.

* WHEN...Until 8 AM CDT this morning.

* IMPACTS...Conditions will be hazardous to small craft.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Anyone operating a smaller vessel should avoid navigating in
hazardous conditions.

&&

$$

LSZ121-147-148-150-041300-
/O.CON.KDLH.SC.Y.0091.000000T0000Z-260804T1300Z/
Chequamegon Bay-Bayfield to Oak Point WI-
Sand Island to Bayfield WI-Oak Point to Saxon Harbor WI-
Outer Apostle Islands Beyond 5 NM from Mainland-
1220 AM CDT Tue Aug 4 2026

...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 8 AM CDT THIS
MORNING...

* WHAT...Southwest winds 10 to 20 kt with gusts up to 25 kt and
  waves 1 to 2 ft.

* WHERE...Chequamegon Bay-Bayfield to Oak Point WI, Sand Island 
  to Bayfield WI, Oak Point to Saxon Harbor WI and Outer Apostle 
  Islands Beyond 5 NM from Mainland.

* WHEN...Until 8 AM CDT this morning.

* IMPACTS...Conditions will be hazardous to small craft.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Anyone operating a smaller vessel should avoid navigating in
hazardous conditions.

&&

$$


Action: Continued
Issued At: 2026-08-04 00:21:24

887 
WHUS73 KDLH 040520
MWWDLH

URGENT - MARINE WEATHER MESSAGE
National Weather Service Duluth MN
1220 AM CDT Tue Aug 4 2026

LSZ141>143-041300-
/O.EXA.KDLH.SC.Y.0091.260804T0600Z-260804T1300Z/
Grand Marais to Taconite Harbor MN-
Taconite Harbor to Silver Bay Harbor MN-
Silver Bay Harbor to Two Harbors MN-
1220 AM CDT Tue Aug 4 2026

...SMALL CRAFT ADVISORY IN EFFECT UNTIL 8 AM CDT THIS MORNING...

* WHAT...Southwest winds 10 to 20 kt with gusts up to 25 kt and 
  waves 1 to 2 ft expected.

* WHERE...Grand Marais to Taconite Harbor MN, Taconite Harbor to 
  Silver Bay Harbor MN and Silver Bay Harbor to Two Harbors MN.

* WHEN...Until 8 AM CDT this morning.

* IMPACTS...Conditions will be hazardous to small craft.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Anyone operating a smaller vessel should avoid navigating in
hazardous conditions.

&&

$$

LSZ140-041300-
/O.CON.KDLH.SC.Y.0091.260804T0600Z-260804T1300Z/
Grand Portage to Grand Marais MN-
1220 AM CDT Tue Aug 4 2026

...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 8 AM CDT THIS
MORNING...

* WHAT...Southwest winds 10 to 20 kt with gusts up to 30 kt and 
  waves 1 to 4 ft expected.

* WHERE...Grand Portage to Grand Marais MN.

* WHEN...Until 8 AM CDT this morning.

* IMPACTS...Conditions will be hazardous to small craft.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Anyone operating a smaller vessel should avoid navigating in
hazardous conditions.

&&

$$

LSZ144>146-041300-
/O.CON.KDLH.SC.Y.0091.000000T0000Z-260804T1300Z/
Two Harbors to Duluth MN-Duluth MN to Port Wing WI-
Port Wing to Sand Island WI-
1220 AM CDT Tue Aug 4 2026

...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 8 AM CDT THIS
MORNING...

* WHAT...Southwest winds 10 to 20 kt with gusts up to 25 kt and 
  waves 1 to 2 ft.

* WHERE...Two Harbors to Duluth MN, Duluth MN to Port Wing WI 
  and Port Wing to Sand Island WI.

* WHEN...Until 8 AM CDT this morning.

* IMPACTS...Conditions will be hazardous to small craft.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Anyone operating a smaller vessel should avoid navigating in
hazardous conditions.

&&

$$

LSZ121-147-148-150-041300-
/O.CON.KDLH.SC.Y.0091.000000T0000Z-260804T1300Z/
Chequamegon Bay-Bayfield to Oak Point WI-
Sand Island to Bayfield WI-Oak Point to Saxon Harbor WI-
Outer Apostle Islands Beyond 5 NM from Mainland-
1220 AM CDT Tue Aug 4 2026

...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 8 AM CDT THIS
MORNING...

* WHAT...Southwest winds 10 to 20 kt with gusts up to 25 kt and
  waves 1 to 2 ft.

* WHERE...Chequamegon Bay-Bayfield to Oak Point WI, Sand Island 
  to Bayfield WI, Oak Point to Saxon Harbor WI and Outer Apostle 
  Islands Beyond 5 NM from Mainland.

* WHEN...Until 8 AM CDT this morning.

* IMPACTS...Conditions will be hazardous to small craft.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Anyone operating a smaller vessel should avoid navigating in
hazardous conditions.

&&

$$


Action: Continued
Issued At: 2026-08-04 00:21:24

887 
WHUS73 KDLH 040520
MWWDLH

URGENT - MARINE WEATHER MESSAGE
National Weather Service Duluth MN
1220 AM CDT Tue Aug 4 2026

LSZ141>143-041300-
/O.EXA.KDLH.SC.Y.0091.260804T0600Z-260804T1300Z/
Grand Marais to Taconite Harbor MN-
Taconite Harbor to Silver Bay Harbor MN-
Silver Bay Harbor to Two Harbors MN-
1220 AM CDT Tue Aug 4 2026

...SMALL CRAFT ADVISORY IN EFFECT UNTIL 8 AM CDT THIS MORNING...

* WHAT...Southwest winds 10 to 20 kt with gusts up to 25 kt and 
  waves 1 to 2 ft expected.

* WHERE...Grand Marais to Taconite Harbor MN, Taconite Harbor to 
  Silver Bay Harbor MN and Silver Bay Harbor to Two Harbors MN.

* WHEN...Until 8 AM CDT this morning.

* IMPACTS...Conditions will be hazardous to small craft.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Anyone operating a smaller vessel should avoid navigating in
hazardous conditions.

&&

$$

LSZ140-041300-
/O.CON.KDLH.SC.Y.0091.260804T0600Z-260804T1300Z/
Grand Portage to Grand Marais MN-
1220 AM CDT Tue Aug 4 2026

...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 8 AM CDT THIS
MORNING...

* WHAT...Southwest winds 10 to 20 kt with gusts up to 30 kt and 
  waves 1 to 4 ft expected.

* WHERE...Grand Portage to Grand Marais MN.

* WHEN...Until 8 AM CDT this morning.

* IMPACTS...Conditions will be hazardous to small craft.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Anyone operating a smaller vessel should avoid navigating in
hazardous conditions.

&&

$$

LSZ144>146-041300-
/O.CON.KDLH.SC.Y.0091.000000T0000Z-260804T1300Z/
Two Harbors to Duluth MN-Duluth MN to Port Wing WI-
Port Wing to Sand Island WI-
1220 AM CDT Tue Aug 4 2026

...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 8 AM CDT THIS
MORNING...

* WHAT...Southwest winds 10 to 20 kt with gusts up to 25 kt and 
  waves 1 to 2 ft.

* WHERE...Two Harbors to Duluth MN, Duluth MN to Port Wing WI 
  and Port Wing to Sand Island WI.

* WHEN...Until 8 AM CDT this morning.

* IMPACTS...Conditions will be hazardous to small craft.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Anyone operating a smaller vessel should avoid navigating in
hazardous conditions.

&&

$$

LSZ121-147-148-150-041300-
/O.CON.KDLH.SC.Y.0091.000000T0000Z-260804T1300Z/
Chequamegon Bay-Bayfield to Oak Point WI-
Sand Island to Bayfield WI-Oak Point to Saxon Harbor WI-
Outer Apostle Islands Beyond 5 NM from Mainland-
1220 AM CDT Tue Aug 4 2026

...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 8 AM CDT THIS
MORNING...

* WHAT...Southwest winds 10 to 20 kt with gusts up to 25 kt and
  waves 1 to 2 ft.

* WHERE...Chequamegon Bay-Bayfield to Oak Point WI, Sand Island 
  to Bayfield WI, Oak Point to Saxon Harbor WI and Outer Apostle 
  Islands Beyond 5 NM from Mainland.

* WHEN...Until 8 AM CDT this morning.

* IMPACTS...Conditions will be hazardous to small craft.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Anyone operating a smaller vessel should avoid navigating in
hazardous conditions.

&&

$$


Action: Continued
Issued At: 2026-08-04 00:21:24

887 
WHUS73 KDLH 040520
MWWDLH

URGENT - MARINE WEATHER MESSAGE
National Weather Service Duluth MN
1220 AM CDT Tue Aug 4 2026

LSZ141>143-041300-
/O.EXA.KDLH.SC.Y.0091.260804T0600Z-260804T1300Z/
Grand Marais to Taconite Harbor MN-
Taconite Harbor to Silver Bay Harbor MN-
Silver Bay Harbor to Two Harbors MN-
1220 AM CDT Tue Aug 4 2026

...SMALL CRAFT ADVISORY IN EFFECT UNTIL 8 AM CDT THIS MORNING...

* WHAT...Southwest winds 10 to 20 kt with gusts up to 25 kt and 
  waves 1 to 2 ft expected.

* WHERE...Grand Marais to Taconite Harbor MN, Taconite Harbor to 
  Silver Bay Harbor MN and Silver Bay Harbor to Two Harbors MN.

* WHEN...Until 8 AM CDT this morning.

* IMPACTS...Conditions will be hazardous to small craft.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Anyone operating a smaller vessel should avoid navigating in
hazardous conditions.

&&

$$

LSZ140-041300-
/O.CON.KDLH.SC.Y.0091.260804T0600Z-260804T1300Z/
Grand Portage to Grand Marais MN-
1220 AM CDT Tue Aug 4 2026

...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 8 AM CDT THIS
MORNING...

* WHAT...Southwest winds 10 to 20 kt with gusts up to 30 kt and 
  waves 1 to 4 ft expected.

* WHERE...Grand Portage to Grand Marais MN.

* WHEN...Until 8 AM CDT this morning.

* IMPACTS...Conditions will be hazardous to small craft.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Anyone operating a smaller vessel should avoid navigating in
hazardous conditions.

&&

$$

LSZ144>146-041300-
/O.CON.KDLH.SC.Y.0091.000000T0000Z-260804T1300Z/
Two Harbors to Duluth MN-Duluth MN to Port Wing WI-
Port Wing to Sand Island WI-
1220 AM CDT Tue Aug 4 2026

...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 8 AM CDT THIS
MORNING...

* WHAT...Southwest winds 10 to 20 kt with gusts up to 25 kt and 
  waves 1 to 2 ft.

* WHERE...Two Harbors to Duluth MN, Duluth MN to Port Wing WI 
  and Port Wing to Sand Island WI.

* WHEN...Until 8 AM CDT this morning.

* IMPACTS...Conditions will be hazardous to small craft.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Anyone operating a smaller vessel should avoid navigating in
hazardous conditions.

&&

$$

LSZ121-147-148-150-041300-
/O.CON.KDLH.SC.Y.0091.000000T0000Z-260804T1300Z/
Chequamegon Bay-Bayfield to Oak Point WI-
Sand Island to Bayfield WI-Oak Point to Saxon Harbor WI-
Outer Apostle Islands Beyond 5 NM from Mainland-
1220 AM CDT Tue Aug 4 2026

...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 8 AM CDT THIS
MORNING...

* WHAT...Southwest winds 10 to 20 kt with gusts up to 25 kt and
  waves 1 to 2 ft.

* WHERE...Chequamegon Bay-Bayfield to Oak Point WI, Sand Island 
  to Bayfield WI, Oak Point to Saxon Harbor WI and Outer Apostle 
  Islands Beyond 5 NM from Mainland.

* WHEN...Until 8 AM CDT this morning.

* IMPACTS...Conditions will be hazardous to small craft.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Anyone operating a smaller vessel should avoid navigating in
hazardous conditions.

&&

$$


Action: Expired
Issued At: 2026-08-04 07:37:42

644 
WHUS73 KDLH 041237
MWWDLH

URGENT - MARINE WEATHER MESSAGE
National Weather Service Duluth MN
737 AM CDT Tue Aug 4 2026

LSZ140-041345-
/O.EXP.KDLH.SC.Y.0091.000000T0000Z-260804T1300Z/
Grand Portage to Grand Marais MN-
737 AM CDT Tue Aug 4 2026

...SMALL CRAFT ADVISORY WILL EXPIRE AT 8 AM CDT THIS MORNING...

$$

LSZ144>146-041345-
/O.EXP.KDLH.SC.Y.0091.000000T0000Z-260804T1300Z/
Two Harbors to Duluth MN-Duluth MN to Port Wing WI-
Port Wing to Sand Island WI-
737 AM CDT Tue Aug 4 2026

...SMALL CRAFT ADVISORY WILL EXPIRE AT 8 AM CDT THIS MORNING...

$$

LSZ121-147-148-150-041345-
/O.EXP.KDLH.SC.Y.0091.000000T0000Z-260804T1300Z/
Chequamegon Bay-Bayfield to Oak Point WI-
Sand Island to Bayfield WI-Oak Point to Saxon Harbor WI-
Outer Apostle Islands Beyond 5 NM from Mainland-
737 AM CDT Tue Aug 4 2026

...SMALL CRAFT ADVISORY WILL EXPIRE AT 8 AM CDT THIS MORNING...

$$

LSZ141>143-041345-
/O.EXP.KDLH.SC.Y.0091.000000T0000Z-260804T1300Z/
Grand Marais to Taconite Harbor MN-
Taconite Harbor to Silver Bay Harbor MN-
Silver Bay Harbor to Two Harbors MN-
737 AM CDT Tue Aug 4 2026

...SMALL CRAFT ADVISORY WILL EXPIRE AT 8 AM CDT THIS MORNING...

$$


Action: Expired
Issued At: 2026-08-04 07:37:42

644 
WHUS73 KDLH 041237
MWWDLH

URGENT - MARINE WEATHER MESSAGE
National Weather Service Duluth MN
737 AM CDT Tue Aug 4 2026

LSZ140-041345-
/O.EXP.KDLH.SC.Y.0091.000000T0000Z-260804T1300Z/
Grand Portage to Grand Marais MN-
737 AM CDT Tue Aug 4 2026

...SMALL CRAFT ADVISORY WILL EXPIRE AT 8 AM CDT THIS MORNING...

$$

LSZ144>146-041345-
/O.EXP.KDLH.SC.Y.0091.000000T0000Z-260804T1300Z/
Two Harbors to Duluth MN-Duluth MN to Port Wing WI-
Port Wing to Sand Island WI-
737 AM CDT Tue Aug 4 2026

...SMALL CRAFT ADVISORY WILL EXPIRE AT 8 AM CDT THIS MORNING...

$$

LSZ121-147-148-150-041345-
/O.EXP.KDLH.SC.Y.0091.000000T0000Z-260804T1300Z/
Chequamegon Bay-Bayfield to Oak Point WI-
Sand Island to Bayfield WI-Oak Point to Saxon Harbor WI-
Outer Apostle Islands Beyond 5 NM from Mainland-
737 AM CDT Tue Aug 4 2026

...SMALL CRAFT ADVISORY WILL EXPIRE AT 8 AM CDT THIS MORNING...

$$

LSZ141>143-041345-
/O.EXP.KDLH.SC.Y.0091.000000T0000Z-260804T1300Z/
Grand Marais to Taconite Harbor MN-
Taconite Harbor to Silver Bay Harbor MN-
Silver Bay Harbor to Two Harbors MN-
737 AM CDT Tue Aug 4 2026

...SMALL CRAFT ADVISORY WILL EXPIRE AT 8 AM CDT THIS MORNING...

$$


Action: Expired
Issued At: 2026-08-04 07:37:42

644 
WHUS73 KDLH 041237
MWWDLH

URGENT - MARINE WEATHER MESSAGE
National Weather Service Duluth MN
737 AM CDT Tue Aug 4 2026

LSZ140-041345-
/O.EXP.KDLH.SC.Y.0091.000000T0000Z-260804T1300Z/
Grand Portage to Grand Marais MN-
737 AM CDT Tue Aug 4 2026

...SMALL CRAFT ADVISORY WILL EXPIRE AT 8 AM CDT THIS MORNING...

$$

LSZ144>146-041345-
/O.EXP.KDLH.SC.Y.0091.000000T0000Z-260804T1300Z/
Two Harbors to Duluth MN-Duluth MN to Port Wing WI-
Port Wing to Sand Island WI-
737 AM CDT Tue Aug 4 2026

...SMALL CRAFT ADVISORY WILL EXPIRE AT 8 AM CDT THIS MORNING...

$$

LSZ121-147-148-150-041345-
/O.EXP.KDLH.SC.Y.0091.000000T0000Z-260804T1300Z/
Chequamegon Bay-Bayfield to Oak Point WI-
Sand Island to Bayfield WI-Oak Point to Saxon Harbor WI-
Outer Apostle Islands Beyond 5 NM from Mainland-
737 AM CDT Tue Aug 4 2026

...SMALL CRAFT ADVISORY WILL EXPIRE AT 8 AM CDT THIS MORNING...

$$

LSZ141>143-041345-
/O.EXP.KDLH.SC.Y.0091.000000T0000Z-260804T1300Z/
Grand Marais to Taconite Harbor MN-
Taconite Harbor to Silver Bay Harbor MN-
Silver Bay Harbor to Two Harbors MN-
737 AM CDT Tue Aug 4 2026

...SMALL CRAFT ADVISORY WILL EXPIRE AT 8 AM CDT THIS MORNING...

$$


Action: Expired
Issued At: 2026-08-04 07:37:42

644 
WHUS73 KDLH 041237
MWWDLH

URGENT - MARINE WEATHER MESSAGE
National Weather Service Duluth MN
737 AM CDT Tue Aug 4 2026

LSZ140-041345-
/O.EXP.KDLH.SC.Y.0091.000000T0000Z-260804T1300Z/
Grand Portage to Grand Marais MN-
737 AM CDT Tue Aug 4 2026

...SMALL CRAFT ADVISORY WILL EXPIRE AT 8 AM CDT THIS MORNING...

$$

LSZ144>146-041345-
/O.EXP.KDLH.SC.Y.0091.000000T0000Z-260804T1300Z/
Two Harbors to Duluth MN-Duluth MN to Port Wing WI-
Port Wing to Sand Island WI-
737 AM CDT Tue Aug 4 2026

...SMALL CRAFT ADVISORY WILL EXPIRE AT 8 AM CDT THIS MORNING...

$$

LSZ121-147-148-150-041345-
/O.EXP.KDLH.SC.Y.0091.000000T0000Z-260804T1300Z/
Chequamegon Bay-Bayfield to Oak Point WI-
Sand Island to Bayfield WI-Oak Point to Saxon Harbor WI-
Outer Apostle Islands Beyond 5 NM from Mainland-
737 AM CDT Tue Aug 4 2026

...SMALL CRAFT ADVISORY WILL EXPIRE AT 8 AM CDT THIS MORNING...

$$

LSZ141>143-041345-
/O.EXP.KDLH.SC.Y.0091.000000T0000Z-260804T1300Z/
Grand Marais to Taconite Harbor MN-
Taconite Harbor to Silver Bay Harbor MN-
Silver Bay Harbor to Two Harbors MN-
737 AM CDT Tue Aug 4 2026

...SMALL CRAFT ADVISORY WILL EXPIRE AT 8 AM CDT THIS MORNING...

$$



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