Alert archive / Michigan / Small Craft Advisories in 2021

Small Craft Advisory 33, NWS Marquette, MI

April 11, 2021

NWS Marquette, MI issued this small craft advisory at Apr 11, 2021, 4:17 AM EDT. It took effect at Apr 11, 2021, 8:00 AM EDT. It was in force for 30 hr.

The area

The counties it named.

The facts

Issued
Apr 11, 2021, 4:17 AM EDT (08:17 UTC)
In effect from
Apr 11, 2021, 8:00 AM EDT
Expired
Apr 12, 2021, 2:00 PM EDT
In force
30 hr
Issued by
NWS Marquette, MI

The text

As transmitted.

148 
WHUS73 KMQT 110817
MWWMQT

URGENT - MARINE WEATHER MESSAGE
National Weather Service Marquette MI
417 AM EDT Sun Apr 11 2021

LSZ240-241-111630-
/O.NEW.KMQT.SC.Y.0033.210411T1800Z-210413T0000Z/
Saxon Harbor WI to Black River MI-Black River to Ontonagon MI-
417 AM EDT Sun Apr 11 2021 /317 AM CDT Sun Apr 11 2021/

...SMALL CRAFT ADVISORY IN EFFECT FROM 2 PM EDT /1 PM CDT/ THIS
AFTERNOON TO 8 PM EDT /7 PM CDT/ MONDAY...

* WHAT...Northeast winds 10 to 20 kt and waves 5 to 8 ft 
  expected.

* WHERE...Saxon Harbor WI to Black River MI and Black River to 
  Ontonagon MI.

* WHEN...From 2 PM EDT /1 PM CDT/ this afternoon to 8 PM EDT /7 
  PM CDT/ Monday.

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


PRECAUTIONARY/PREPAREDNESS ACTIONS...

Inexperienced mariners, especially those operating smaller
vessels, should avoid navigating in hazardous conditions.

&&

$$

LSZ242>245-111630-
/O.NEW.KMQT.SC.Y.0033.210411T1500Z-210412T1500Z/
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-
417 AM EDT Sun Apr 11 2021

...SMALL CRAFT ADVISORY IN EFFECT FROM 11 AM THIS MORNING TO
11 AM EDT MONDAY...

* WHAT...Northeast winds 10 to 20 kt with gusts up to 25 kt and 
  waves 6 to 9 ft expected.

* WHERE...Ontonagon to Upper Entrance of Portage Canal MI, Upper 
  Entrance of Portage Canal to Eagle River MI, Eagle River to 
  Manitou Island MI and Manitou Island to Point Isabelle MI.

* WHEN...From 11 AM this morning to 11 AM EDT Monday.

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


PRECAUTIONARY/PREPAREDNESS ACTIONS...

Inexperienced mariners, especially those operating smaller
vessels, should avoid navigating in hazardous conditions.

&&

$$

LSZ248-249-111630-
/O.NEW.KMQT.SC.Y.0033.210411T1300Z-210412T1200Z/
Huron Islands to Marquette MI-Marquette to Munising MI-
417 AM EDT Sun Apr 11 2021

...SMALL CRAFT ADVISORY IN EFFECT FROM 9 AM THIS MORNING TO 8 AM
EDT MONDAY...

* WHAT...Waves 3 to 6 ft expected.

* WHERE...Huron Islands to Marquette MI and Marquette to 
  Munising MI.

* WHEN...From 9 AM this morning to 8 AM EDT Monday.

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

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Inexperienced mariners, especially those operating smaller
vessels, should avoid navigating in hazardous conditions.

&&

$$

LSZ250-251-111630-
/O.NEW.KMQT.SC.Y.0033.210411T1200Z-210411T2100Z/
Munising to Grand Marais MI-Grand Marais to Whitefish Point MI-
417 AM EDT Sun Apr 11 2021

...SMALL CRAFT ADVISORY IN EFFECT FROM 8 AM THIS MORNING TO 5 PM
EDT THIS AFTERNOON...

* WHAT...Waves 2 to 5 ft expected.

* WHERE...Munising to Grand Marais MI and Grand Marais to 
  Whitefish Point MI.

* WHEN...From 8 AM this morning to 5 PM EDT this afternoon.

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

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Inexperienced mariners, especially those operating smaller
vessels, should avoid navigating in hazardous conditions.

&&

$$

LMZ221-248-250-111630-
/O.CON.KMQT.MF.Y.0003.000000T0000Z-210411T1800Z/
Green Bay North of line from Cedar River MI to Rock Island
Passage-Seul Choix Point to Point Detour MI-
5NM East of a line from Fairport MI to Rock Island Passage-
417 AM EDT Sun Apr 11 2021

...DENSE FOG ADVISORY REMAINS IN EFFECT UNTIL 2 PM EDT THIS
AFTERNOON...

* WHAT...Dense fog will reduce visibility to less than 1 NM at
  times.

* WHERE...5NM East of a line from Fairport MI to Rock Island 
  Passage, Seul Choix Point to Point Detour MI and Green Bay 
  North of line from Cedar River MI to Rock Island Passage.

* WHEN...Until 2 PM EDT this afternoon.

* IMPACTS...Low visibility will make navigation difficult.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

If you must navigate, proceed with caution. Use proper fog
signals. Make sure all running lights are on. Remember to use
your radar and compass.

&&

$$
6 follow-up statements
023 
WHUS73 KMQT 111347
MWWMQT

URGENT - MARINE WEATHER MESSAGE
National Weather Service Marquette MI
947 AM EDT Sun Apr 11 2021

LMZ221-248-250-111800-
/O.CON.KMQT.MF.Y.0003.000000T0000Z-210411T1800Z/
Green Bay North of line from Cedar River MI to Rock Island
Passage-Seul Choix Point to Point Detour MI-
5NM East of a line from Fairport MI to Rock Island Passage-
947 AM EDT Sun Apr 11 2021

...DENSE FOG ADVISORY REMAINS IN EFFECT UNTIL 2 PM EDT THIS
AFTERNOON...

* WHAT...Dense fog will reduce visibility to 1 to 3 NM.

* WHERE...5NM East of a line from Fairport MI to Rock Island 
  Passage, Seul Choix Point to Point Detour MI and Green Bay 
  North of line from Cedar River MI to Rock Island Passage.

* WHEN...Until 2 PM EDT this afternoon.

* IMPACTS...Low visibility will make navigation difficult.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

If you must navigate, proceed with caution. Use proper fog
signals. Make sure all running lights are on. Remember to use
your radar and compass.

&&

$$

LSZ240-241-112200-
/O.CON.KMQT.SC.Y.0033.210411T1800Z-210413T0000Z/
Saxon Harbor WI to Black River MI-Black River to Ontonagon MI-
947 AM EDT Sun Apr 11 2021 /847 AM CDT Sun Apr 11 2021/

...SMALL CRAFT ADVISORY REMAINS IN EFFECT FROM 2 PM EDT /1 PM
CDT/ THIS AFTERNOON TO 8 PM EDT /7 PM CDT/ MONDAY...

* WHAT...Northeast winds 10 to 20 kt and waves 5 to 8 ft 
  expected.

* WHERE...Black River to Ontonagon MI and Saxon Harbor WI to 
  Black River MI.

* WHEN...From 2 PM EDT /1 PM CDT/ this afternoon to 8 PM EDT /7 
  PM CDT/ Monday.

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

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Inexperienced mariners, especially those operating smaller
vessels, should avoid navigating in hazardous conditions.

&&

$$

LSZ242>245-112200-
/O.CON.KMQT.SC.Y.0033.210411T1500Z-210412T1500Z/
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-
947 AM EDT Sun Apr 11 2021

...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 11 AM EDT
MONDAY...

* WHAT...Northeast winds 10 to 20 kt with gusts up to 25 kt and 
  waves 6 to 9 ft expected.

* WHERE...Ontonagon to Upper Entrance of Portage Canal MI, Upper 
  Entrance of Portage Canal to Eagle River MI, Manitou Island to 
  Point Isabelle MI and Eagle River to Manitou Island MI.

* WHEN...Until 11 AM EDT Monday.

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

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Inexperienced mariners, especially those operating smaller
vessels, should avoid navigating in hazardous conditions.

&&

$$

LSZ248-249-112200-
/O.CON.KMQT.SC.Y.0033.000000T0000Z-210412T1200Z/
Huron Islands to Marquette MI-Marquette to Munising MI-
947 AM EDT Sun Apr 11 2021

...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 8 AM EDT MONDAY...

* WHAT...Waves 3 to 6 ft occurring.

* WHERE...Huron Islands to Marquette MI and Marquette to 
  Munising MI.

* WHEN...Until 8 AM EDT Monday.

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

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Inexperienced mariners, especially those operating smaller
vessels, should avoid navigating in hazardous conditions.

&&

$$

LSZ250-251-112100-
/O.CON.KMQT.SC.Y.0033.000000T0000Z-210411T2100Z/
Munising to Grand Marais MI-Grand Marais to Whitefish Point MI-
947 AM EDT Sun Apr 11 2021

...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 5 PM EDT THIS
AFTERNOON...

* WHAT...Waves 2 to 5 ft occurring.

* WHERE...Munising to Grand Marais MI and Grand Marais to 
  Whitefish Point MI.

* WHEN...Until 5 PM EDT this afternoon.

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

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Inexperienced mariners, especially those operating smaller
vessels, should avoid navigating in hazardous conditions.

&&

$$

jp
859 
WHUS73 KMQT 111757
MWWMQT

URGENT - MARINE WEATHER MESSAGE
National Weather Service Marquette MI
157 PM EDT Sun Apr 11 2021

LMZ221-111900-
/O.EXP.KMQT.MF.Y.0003.000000T0000Z-210411T1800Z/
Green Bay North of line from Cedar River MI to Rock Island
Passage-
157 PM EDT Sun Apr 11 2021

...DENSE FOG ADVISORY WILL EXPIRE AT 2 PM EDT THIS AFTERNOON...

$$

LMZ248-250-120200-
/O.EXT.KMQT.MF.Y.0003.000000T0000Z-210412T1500Z/
Seul Choix Point to Point Detour MI-
5NM East of a line from Fairport MI to Rock Island Passage-
157 PM EDT Sun Apr 11 2021

...DENSE FOG ADVISORY NOW IN EFFECT UNTIL 11 AM EDT MONDAY...

* WHAT...Dense fog will reduce visibility to 1 NM or less.

* WHERE...5NM East of a line from Fairport MI to Rock Island 
  Passage and Seul Choix Point to Point Detour MI.

* WHEN...Until 11 AM EDT Monday.

* IMPACTS...Low visibility will make navigation difficult.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

If you must navigate, proceed with caution. Use proper fog
signals. Make sure all running lights are on. Remember to use
your radar and compass.

&&

$$

LSZ240-241-120200-
/O.CON.KMQT.SC.Y.0033.210411T1800Z-210413T0000Z/
Saxon Harbor WI to Black River MI-Black River to Ontonagon MI-
157 PM EDT Sun Apr 11 2021 /1257 PM CDT Sun Apr 11 2021/

...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 8 PM EDT /7 PM
CDT/ MONDAY...

* WHAT...Northeast winds 5 to 15 kt and waves 5 to 8 ft expected.

* WHERE...Black River to Ontonagon MI and Saxon Harbor WI to 
  Black River MI.

* WHEN...Until 8 PM EDT /7 PM CDT/ Monday.

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

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Inexperienced mariners, especially those operating smaller
vessels, should avoid navigating in hazardous conditions.

&&

$$

LSZ242>245-120200-
/O.CON.KMQT.SC.Y.0033.000000T0000Z-210412T1500Z/
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-
157 PM EDT Sun Apr 11 2021

...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 11 AM EDT
MONDAY...

* WHAT...Northeast winds 10 to 20 kt with gusts up to 25 kt and 
  waves 6 to 9 ft occurring.

* WHERE...Ontonagon to Upper Entrance of Portage Canal MI, Upper 
  Entrance of Portage Canal to Eagle River MI, Manitou Island to 
  Point Isabelle MI and Eagle River to Manitou Island MI.

* WHEN...Until 11 AM EDT Monday.

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

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Inexperienced mariners, especially those operating smaller
vessels, should avoid navigating in hazardous conditions.

&&

$$

LSZ248-249-120200-
/O.CON.KMQT.SC.Y.0033.000000T0000Z-210412T1200Z/
Huron Islands to Marquette MI-Marquette to Munising MI-
157 PM EDT Sun Apr 11 2021

...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 8 AM EDT MONDAY...

* WHAT...Waves 3 to 6 ft occurring.

* WHERE...Huron Islands to Marquette MI and Marquette to 
  Munising MI.

* WHEN...Until 8 AM EDT Monday.

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

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Inexperienced mariners, especially those operating smaller
vessels, should avoid navigating in hazardous conditions.

&&

$$

LSZ250-251-112100-
/O.CON.KMQT.SC.Y.0033.000000T0000Z-210411T2100Z/
Munising to Grand Marais MI-Grand Marais to Whitefish Point MI-
157 PM EDT Sun Apr 11 2021

...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 5 PM EDT THIS
AFTERNOON...

* WHAT...Waves 2 to 4 ft occurring.

* WHERE...Munising to Grand Marais MI and Grand Marais to 
  Whitefish Point MI.

* WHEN...Until 5 PM EDT this afternoon.

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

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Inexperienced mariners, especially those operating smaller
vessels, should avoid navigating in hazardous conditions.

&&

$$
667 
WHUS73 KMQT 112107
MWWMQT

URGENT - MARINE WEATHER MESSAGE
National Weather Service Marquette MI
507 PM EDT Sun Apr 11 2021

LSZ250-251-112215-
/O.EXP.KMQT.SC.Y.0033.000000T0000Z-210411T2100Z/
Munising to Grand Marais MI-Grand Marais to Whitefish Point MI-
507 PM EDT Sun Apr 11 2021

...SMALL CRAFT ADVISORY HAS EXPIRED...

$$

LMZ248-250-120515-
/O.CON.KMQT.MF.Y.0003.000000T0000Z-210412T1500Z/
Seul Choix Point to Point Detour MI-
5NM East of a line from Fairport MI to Rock Island Passage-
507 PM EDT Sun Apr 11 2021

...DENSE FOG ADVISORY REMAINS IN EFFECT UNTIL 11 AM EDT MONDAY...

* WHAT...Dense fog will reduce visibility to 1/4 NM or less.

* WHERE...5NM East of a line from Fairport MI to Rock Island 
  Passage and Seul Choix Point to Point Detour MI.

* WHEN...Until 11 AM EDT Monday.

* IMPACTS...Low visibility will make navigation difficult.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

If you must navigate, proceed with caution. Use proper fog
signals. Make sure all running lights are on. Remember to use
your radar and compass.

&&

$$

LSZ240-241-120515-
/O.CON.KMQT.SC.Y.0033.000000T0000Z-210413T0000Z/
Saxon Harbor WI to Black River MI-Black River to Ontonagon MI-
507 PM EDT Sun Apr 11 2021 /407 PM CDT Sun Apr 11 2021/

...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 8 PM EDT /7 PM
CDT/ MONDAY...

* WHAT...Northeast winds 5 to 15 kt and waves 4 to 7 ft 
  occurring.

* WHERE...Black River to Ontonagon MI and Saxon Harbor WI to 
  Black River MI.

* WHEN...Until 8 PM EDT /7 PM CDT/ Monday.

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

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Inexperienced mariners, especially those operating smaller
vessels, should avoid navigating in hazardous conditions.

&&

$$

LSZ242>245-120515-
/O.CON.KMQT.SC.Y.0033.000000T0000Z-210412T1500Z/
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-
507 PM EDT Sun Apr 11 2021

...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 11 AM EDT
MONDAY...

* WHAT...Northeast winds 10 to 20 kt with gusts up to 25 kt and 
  waves 5 to 8 ft occurring.

* WHERE...Manitou Island to Point Isabelle MI, Eagle River to 
  Manitou Island MI, Upper Entrance of Portage Canal to Eagle 
  River MI and Ontonagon to Upper Entrance of Portage Canal MI.

* WHEN...Until 11 AM EDT Monday.

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

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Inexperienced mariners, especially those operating smaller
vessels, should avoid navigating in hazardous conditions.

&&

$$

LSZ248-249-120515-
/O.CON.KMQT.SC.Y.0033.000000T0000Z-210412T1200Z/
Huron Islands to Marquette MI-Marquette to Munising MI-
507 PM EDT Sun Apr 11 2021

...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 8 AM EDT MONDAY...

* WHAT...Waves 3 to 6 ft occurring.

* WHERE...Marquette to Munising MI and Huron Islands to 
  Marquette MI.

* WHEN...Until 8 AM EDT Monday.

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

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Inexperienced mariners, especially those operating smaller
vessels, should avoid navigating in hazardous conditions.

&&

$$
478 
WHUS73 KMQT 120139
MWWMQT

URGENT - MARINE WEATHER MESSAGE
National Weather Service Marquette MI
939 PM EDT Sun Apr 11 2021

LMZ248-250-120945-
/O.CON.KMQT.MF.Y.0003.000000T0000Z-210412T1500Z/
Seul Choix Point to Point Detour MI-
5NM East of a line from Fairport MI to Rock Island Passage-
939 PM EDT Sun Apr 11 2021

...DENSE FOG ADVISORY REMAINS IN EFFECT UNTIL 11 AM EDT MONDAY...

* WHAT...Dense fog will reduce visibility to 1/4 NM or less.

* WHERE...5NM East of a line from Fairport MI to Rock Island 
  Passage and Seul Choix Point to Point Detour MI.

* WHEN...Until 11 AM EDT Monday.

* IMPACTS...Low visibility will make navigation difficult.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

If you must navigate, proceed with caution. Use proper fog
signals. Make sure all running lights are on. Remember to use
your radar and compass.

&&

$$

LSZ240-241-120945-
/O.CON.KMQT.SC.Y.0033.000000T0000Z-210413T0000Z/
Saxon Harbor WI to Black River MI-Black River to Ontonagon MI-
939 PM EDT Sun Apr 11 2021 /839 PM CDT Sun Apr 11 2021/

...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 8 PM EDT /7 PM
CDT/ MONDAY...

* WHAT...Waves 4 to 7 ft occurring.

* WHERE...Black River to Ontonagon MI and Saxon Harbor WI to 
  Black River MI.

* WHEN...Until 8 PM EDT /7 PM CDT/ Monday.

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

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Inexperienced mariners, especially those operating smaller
vessels, should avoid navigating in hazardous conditions.

&&

$$

LSZ242>245-120945-
/O.CON.KMQT.SC.Y.0033.000000T0000Z-210412T1500Z/
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-
939 PM EDT Sun Apr 11 2021

...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 11 AM EDT
MONDAY...

* WHAT...East winds 10 to 20 kt with gusts up to 25 kt and waves 
  5 to 8 ft occurring.

* WHERE...Manitou Island to Point Isabelle MI, Eagle River to 
  Manitou Island MI, Upper Entrance of Portage Canal to Eagle 
  River MI and Ontonagon to Upper Entrance of Portage Canal MI.

* WHEN...Until 11 AM EDT Monday.

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

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Inexperienced mariners, especially those operating smaller
vessels, should avoid navigating in hazardous conditions.

&&

$$

LSZ248-249-120945-
/O.CON.KMQT.SC.Y.0033.000000T0000Z-210412T1200Z/
Huron Islands to Marquette MI-Marquette to Munising MI-
939 PM EDT Sun Apr 11 2021

...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 8 AM EDT MONDAY...

* WHAT...Waves 3 to 6 ft occurring.

* WHERE...Marquette to Munising MI and Huron Islands to 
  Marquette MI.

* WHEN...Until 8 AM EDT Monday.

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

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Inexperienced mariners, especially those operating smaller
vessels, should avoid navigating in hazardous conditions.

&&

$$
151 
WHUS73 KMQT 120822
MWWMQT

URGENT - MARINE WEATHER MESSAGE
National Weather Service Marquette MI
422 AM EDT Mon Apr 12 2021

LMZ221-121500-
/O.EXA.KMQT.MF.Y.0003.000000T0000Z-210412T1500Z/
Green Bay North of line from Cedar River MI to Rock Island
Passage-
422 AM EDT Mon Apr 12 2021

...DENSE FOG ADVISORY IN EFFECT UNTIL 11 AM EDT THIS MORNING...

* WHAT...Dense fog will reduce visibility to 1/4 NM or less.

* WHERE...Green Bay North of line from Cedar River MI to Rock 
  Island Passage.

* WHEN...Until 11 AM EDT this morning.

* IMPACTS...Low visibility will make navigation difficult.


PRECAUTIONARY/PREPAREDNESS ACTIONS...

If you must navigate, proceed with caution. Use proper fog
signals. Make sure all running lights are on. Remember to use
your radar and compass.

&&

$$

LSZ240-241-121630-
/O.EXT.KMQT.SC.Y.0033.000000T0000Z-210412T1800Z/
Saxon Harbor WI to Black River MI-Black River to Ontonagon MI-
422 AM EDT Mon Apr 12 2021 /322 AM CDT Mon Apr 12 2021/

...SMALL CRAFT ADVISORY NOW IN EFFECT UNTIL 2 PM EDT /1 PM CDT/
THIS AFTERNOON...

* WHAT...Waves 3 to 6 ft occurring.

* WHERE...Black River to Ontonagon MI and Saxon Harbor WI to 
  Black River MI.

* WHEN...Until 2 PM EDT /1 PM CDT/ this afternoon.

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

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Inexperienced mariners, especially those operating smaller
vessels, should avoid navigating in hazardous conditions.

&&

$$

LMZ248-250-121500-
/O.CON.KMQT.MF.Y.0003.000000T0000Z-210412T1500Z/
Seul Choix Point to Point Detour MI-
5NM East of a line from Fairport MI to Rock Island Passage-
422 AM EDT Mon Apr 12 2021

...DENSE FOG ADVISORY REMAINS IN EFFECT UNTIL 11 AM EDT THIS
MORNING...

* WHAT...Dense fog will reduce visibility to 1/4 NM or less.

* WHERE...5NM East of a line from Fairport MI to Rock Island 
  Passage and Seul Choix Point to Point Detour MI.

* WHEN...Until 11 AM EDT this morning.

* IMPACTS...Low visibility will make navigation difficult.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

If you must navigate, proceed with caution. Use proper fog
signals. Make sure all running lights are on. Remember to use
your radar and compass.

&&

$$

LSZ242>245-121500-
/O.CON.KMQT.SC.Y.0033.000000T0000Z-210412T1500Z/
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-
422 AM EDT Mon Apr 12 2021

...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 11 AM EDT THIS
MORNING...

* WHAT...Waves 4 to 7 ft occurring.

* WHERE...Manitou Island to Point Isabelle MI, Eagle River to 
  Manitou Island MI, Upper Entrance of Portage Canal to Eagle 
  River MI and Ontonagon to Upper Entrance of Portage Canal MI.

* WHEN...Until 11 AM EDT this morning.

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

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Inexperienced mariners, especially those operating smaller
vessels, should avoid navigating in hazardous conditions.

&&

$$

LSZ248-249-121200-
/O.CON.KMQT.SC.Y.0033.000000T0000Z-210412T1200Z/
Huron Islands to Marquette MI-Marquette to Munising MI-
422 AM EDT Mon Apr 12 2021

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

* WHAT...Waves 2 to 5 ft occurring.

* WHERE...Huron Islands to Marquette MI and Marquette to 
  Munising MI.

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

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

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Inexperienced mariners, especially those operating smaller
vessels, should avoid navigating in hazardous conditions.

&&

$$
575 
WHUS73 KMQT 121411
MWWMQT

URGENT - MARINE WEATHER MESSAGE
National Weather Service Marquette MI
1011 AM EDT Mon Apr 12 2021

LMZ221-248-250-122215-
/O.EXT.KMQT.MF.Y.0003.000000T0000Z-210413T0000Z/
Green Bay North of line from Cedar River MI to Rock Island
Passage-Seul Choix Point to Point Detour MI-
5NM East of a line from Fairport MI to Rock Island Passage-
1011 AM EDT Mon Apr 12 2021

...DENSE FOG ADVISORY NOW IN EFFECT UNTIL 8 PM EDT THIS EVENING...

* WHAT...Dense fog will reduce visibility to less than 1 NM.

* WHERE...5NM East of a line from Fairport MI to Rock Island 
  Passage, Seul Choix Point to Point Detour MI and Green Bay 
  North of line from Cedar River MI to Rock Island Passage.

* WHEN...Until 8 PM EDT this evening.

* IMPACTS...Low visibility will make navigation difficult.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

If you must navigate, proceed with caution. Use proper fog
signals. Make sure all running lights are on. Remember to use
your radar and compass.

&&

$$

LSZ240-241-121800-
/O.CON.KMQT.SC.Y.0033.000000T0000Z-210412T1800Z/
Saxon Harbor WI to Black River MI-Black River to Ontonagon MI-
1011 AM EDT Mon Apr 12 2021 /911 AM CDT Mon Apr 12 2021/

...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 2 PM EDT /1 PM
CDT/ THIS AFTERNOON...

* WHAT...Waves 3 to 5 ft occurring.

* WHERE...Black River to Ontonagon MI and Saxon Harbor WI to 
  Black River MI.

* WHEN...Until 2 PM EDT /1 PM CDT/ this afternoon.

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

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Inexperienced mariners, especially those operating smaller
vessels, should avoid navigating in hazardous conditions.

&&

$$

LSZ242>245-121515-
/O.CON.KMQT.SC.Y.0033.000000T0000Z-210412T1500Z/
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-
1011 AM EDT Mon Apr 12 2021

...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 11 AM EDT THIS
MORNING...

* WHAT...Waves 3 to 4 ft occurring.

* WHERE...Manitou Island to Point Isabelle MI, Eagle River to 
  Manitou Island MI, Upper Entrance of Portage Canal to Eagle 
  River MI and Ontonagon to Upper Entrance of Portage Canal MI.

* WHEN...Until 11 AM EDT this morning.

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

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Inexperienced mariners, especially those operating smaller
vessels, should avoid navigating in hazardous conditions.

&&

$$

jp

What forecasters said that day

The local office's own words before this small craft advisory went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

NWS Marquette, MI wrote its last area forecast discussion before this small craft advisory went out at Apr 11, 4:13 AM EDT, 4 minutes earlier.

Area forecast discussion, Apr 11, 4:13 AM EDT, 4 minutes before
Area Forecast Discussion
National Weather Service Marquette MI
413 AM EDT Sun Apr 11 2021

.SHORT TERM...(This evening through Sunday)
Issued at 255 PM EDT SAT APR 10 2021

A mostly cloudy day was observed across the region, with some breaks
in the clouds observed via GOES 16 imagery during the late morning
hours. By the lakeshores of Delta County and southern Schoolcraft,
low visibilities continued through the morning hours. Otherwise, its
been a mostly dry day. Daytime highs have climbed into the 50s
across the region, except some spots still in the 40s near Lake
Michigan and in the Keweenaw.

Upstream, mid-upper level low with a surface low over Illinois will
slowly track toward the northeast. Precip associated with this will
surge northward tonight along a boundary of healthy isentropic lift
and fgen at 850mb. The solutions suggest precip could move into the
south central late this afternoon, followed by it overspreading the
eastern half of Upper Michigan tonight and west by tomorrow morning.
I expect the rain to continue into Sunday, with the east seeing the
effects of the dry slot by tomorrow afternoon. The rain looks to
persist through the day in the west though. Given the forcings and
PWATs climbing to about an inch, total QPF of half inch to an inch
is expected. The higher totals through tomorrow are likely across
the Huron Mountains where the northeast flow is expected to provide
an orographic enhancement.

Overnight lows in the east should bottom out in the 40s with some
mid-high 40s possible in the interior east. The west could dip into
the mid-upper 30s. Daytime highs on Sunday will largely be in the
50s. If clouds break in the east when the dry slot moves in, some
low 60s could be possible.

.LONG TERM...(Monday through Saturday)
Issued at 413 AM EDT SUN APR 11 2021

Not much change to the thinking of the past several days. Still
expect one cutoff low to be drifting off to the southeast on Monday
while a second trough over the Northern Plains cuts off from the
flow and drifts eastward across the Upper Midwest. On Monday, a NW-
SE oriented band of fgen forced by strong shearing deformation along
the mid-level vort max streamer will set up through far western Lake
Superior and then SE across northern Wisconsin. This fgen will lead
to a band of heavier showers that could clip the far western U.P.
but will mostly stay out of the area during the day. Highs Monday
should be in the 50s most areas. That fgen band will pivot northward
into the U.P. Monday evening leading to more widespread showers.
Colder air wrapping in across the area very late Monday night into
Tuesday morning could lead to a brief changeover to wet snow over
the interior far west, but models mostly show the cold air arriving
after the precip, so have taken most of the snow mention out of the
forecast. With this colder air wrapping in, temps will be cooler on
Tuesday. Took highs down several degrees from the NBM init for
Tuesday. Subzero 850 mb temps and little to no sunshine should keep
temps in the 40s for highs, and would not be surprised if this
forecast is still a few degrees too warm.

These cooler temps persist into Wednesday and Thursday, although
with some improvement thanks to skies finally starting to clear
(especially on Thursday). Highs should range from the mid 40s to low
50s both days. The overall model/ensemble consensus is still that
this second cutoff low will exit the area by late Wednesday as
slight ridging builds across the Upper Great Lakes for the end of
the week. However, a small fraction of the total multi-model
ensemble suite (8% to be exact, using yesterday's 12z runs) keeps
the cutoff low overhead through at least Thursday. By Friday it will
definitely be gone leading to a return to mostly sunny skies and
widespread 50s highs.
&&

.AVIATION...(For the 06Z TAFS through 06Z Sunday night)
Issued at 139 AM EDT SUN APR 11 2021

Prolonged event of low conditions will continue at all sites. SAW
will stay VLIFR/LIFR through the entire forecast period with upslope
northeast flow and there will be some LLWS late tonight into Sun
morning. IWD and CMX will go from MVFR to LIFR/VLIFR by morning.
LLWS is possible at IWD late Sun morning into the afternoon and
at CMX late Sun afternoon.
&&

.MARINE...(For the 4 PM Lake Superior forecast issuance)
Issued at 255 PM EDT SAT APR 10 2021

Northeasterly winds are expected to spread over the lake tonight
from the east to the west. These winds are generally expected to
climb to 20-25 knots by Sunday morning. These winds will continue
through the day and as the tighter pressure gradient moves over the
lake, some gale force gusts to 35 knots may be observed across parts
of the north-central portion of the lake, especially for higher
reporting platforms. By late Sunday evening winds are expected to
fall below 20 knots across the lake and winds should remain light
through the middle of next week.
&&

.MQT WATCHES/WARNINGS/ADVISORIES...
Upper Michigan...
None.
Lake Superior...
None.
Lake Michigan...
  Dense Fog Advisory until 2 PM EDT this afternoon for LMZ221-248-
     250.

&&

SHORT TERM...JP
LONG TERM...RJC
AVIATION...07
MARINE...JP
Hazardous weather outlook, Apr 10, 4:33 PM EDT, 11 hours 44 minutes before
Hazardous Weather Outlook
National Weather Service Marquette MI
433 PM EDT Sat Apr 10 2021

MIZ001>007-009>014-084-085-112045-
Keweenaw-Ontonagon-Northern Houghton-Baraga-Marquette-Alger-Luce-
Gogebic-Iron-Dickinson-Menominee-Delta-Southern Schoolcraft-
Southern Houghton-Northern Schoolcraft-
433 PM EDT Sat Apr 10 2021 /333 PM CDT Sat Apr 10 2021/

This Hazardous Weather Outlook is for portions of western Upper
Michigan and central Upper Michigan.

.DAY ONE...Tonight

No hazardous weather is expected at this time.

.DAYS TWO THROUGH SEVEN...Sunday through Friday

No hazardous weather is expected at this time.

.SPOTTER INFORMATION STATEMENT...

The need for weather spotter reports is not anticipated at this
time.

LSZ162-240>251-263>267-112045-
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-
433 PM EDT Sat Apr 10 2021 /333 PM CDT Sat Apr 10 2021/

This Hazardous Weather Outlook is for portions of Eastern Lake
Superior...Central Lake Superior and Western Lake Superior.

.DAY ONE...Tonight

No hazardous weather is expected at this time.

.DAYS TWO THROUGH SEVEN...Sunday through Friday

A few isolated gale force gusts to 35 knots will be possible
Sunday across north central and western Lake Superior,
particularly for high reporting platforms. See the latest Open
Lake Forecast for more details.

.SPOTTER INFORMATION STATEMENT...

The need for weather spotter reports is not anticipated at this
time.

LMZ221-248-250-112045-
Green Bay North of line from Cedar River MI to Rock Island
Passage-Seul Choix Point to Point Detour MI-
5NM East of a line from Fairport MI to Rock Island Passage-
433 PM EDT Sat Apr 10 2021

This Hazardous Weather Outlook is for portions of Northern Lake
Michigan.

.DAY ONE...Tonight

Areas of dense fog are expected into the evening. See the latest
Nearshore Marine Forecast and Marine Weather Message for
additional details.

.DAYS TWO THROUGH SEVEN...Sunday through Friday

No hazardous weather is expected at this time.

.SPOTTER INFORMATION STATEMENT...

The need for weather spotter reports is not anticipated at this
time.

Voss

Nearby

Small Craft Advisories in Michigan, 2021Every small craft advisory in 2021

Sources

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text.