Alert archive / Michigan / Small Craft Advisories in 2021

Small Craft Advisory 40, NWS Marquette, MI

April 24, 2021

NWS Marquette, MI issued this small craft advisory at Apr 24, 2021, 4:40 AM EDT. It took effect at Apr 24, 2021, 8:00 AM EDT. It was in force for 32 hr.

The area

The counties it named.

The facts

Issued
Apr 24, 2021, 4:40 AM EDT (08:40 UTC)
In effect from
Apr 24, 2021, 8:00 AM EDT
Expired
Apr 25, 2021, 4:00 PM EDT
In force
32 hr
Issued by
NWS Marquette, MI

The text

As transmitted.

528 
WHUS73 KMQT 240840
MWWMQT

URGENT - MARINE WEATHER MESSAGE
National Weather Service Marquette MI
440 AM EDT Sat Apr 24 2021

LMZ221-248-250-241645-
/O.NEW.KMQT.SC.Y.0040.210424T2100Z-210425T1200Z/
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-
440 AM EDT Sat Apr 24 2021

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

* WHAT...North winds 15 to 20 kt with gusts up to 30 kt expected.

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

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

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

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

$$

LSZ240>242-241645-
/O.NEW.KMQT.SC.Y.0040.210424T1300Z-210425T0000Z/
Saxon Harbor WI to Black River MI-Black River to Ontonagon MI-
Ontonagon to Upper Entrance of Portage Canal MI-
440 AM EDT Sat Apr 24 2021 /340 AM CDT Sat Apr 24 2021/

...SMALL CRAFT ADVISORY IN EFFECT FROM 9 AM EDT /8 AM CDT/ THIS
MORNING TO 8 PM EDT /7 PM CDT/ THIS EVENING...

* WHAT...North winds 10 to 20 kt with gusts up to 25 kt and 
  waves 3 to 6 ft expected.

* WHERE...Saxon Harbor WI to Black River MI, Black River to 
  Ontonagon MI and Ontonagon to Upper Entrance of Portage Canal 
  MI.

* WHEN...From 9 AM EDT /8 AM CDT/ this morning to 8 PM EDT /7 PM 
  CDT/ this evening.

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

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

$$

LSZ243>245-241645-
/O.NEW.KMQT.SC.Y.0040.210424T1200Z-210425T0900Z/
Upper Entrance of Portage Canal to Eagle River MI-
Eagle River to Manitou Island MI-
Manitou Island to Point Isabelle MI-
440 AM EDT Sat Apr 24 2021

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

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

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

* WHEN...From 8 AM this morning to 5 AM EDT Sunday.

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

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

$$

LSZ248-249-241645-
/O.NEW.KMQT.SC.Y.0040.210424T1800Z-210425T1200Z/
Huron Islands to Marquette MI-Marquette to Munising MI-
440 AM EDT Sat Apr 24 2021

...SMALL CRAFT ADVISORY IN EFFECT FROM 2 PM THIS AFTERNOON TO
8 AM EDT SUNDAY...

* WHAT...North winds 15 to 20 kt with gusts up to 30 kt and 
  waves 6 to 9 ft expected.

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

* WHEN...From 2 PM this afternoon to 8 AM EDT Sunday.

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

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

$$

LSZ250-251-241645-
/O.NEW.KMQT.SC.Y.0040.210424T2100Z-210425T1200Z/
Munising to Grand Marais MI-Grand Marais to Whitefish Point MI-
440 AM EDT Sat Apr 24 2021

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

* WHAT...North winds 15 to 25 kt with gusts up to 30 kt and 
  waves 5 to 8 ft expected.

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

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

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

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

$$

BW
6 follow-up statements
357 
WHUS73 KMQT 241452
MWWMQT

URGENT - MARINE WEATHER MESSAGE
National Weather Service Marquette MI
1052 AM EDT Sat Apr 24 2021

LMZ221-248-250-242300-
/O.CON.KMQT.SC.Y.0040.210424T2100Z-210425T1200Z/
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-
1052 AM EDT Sat Apr 24 2021

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

* WHAT...North winds 10 to 20 kt with gusts up to 30 kt expected.

* 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...From 5 PM this afternoon to 8 AM EDT Sunday.

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

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

$$

LSZ240>242-242300-
/O.CON.KMQT.SC.Y.0040.000000T0000Z-210425T0000Z/
Saxon Harbor WI to Black River MI-Black River to Ontonagon MI-
Ontonagon to Upper Entrance of Portage Canal MI-
1052 AM EDT Sat Apr 24 2021 /952 AM CDT Sat Apr 24 2021/

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

* WHAT...North winds 5 to 15 kt and waves 3 to 6 ft occurring.

* WHERE...Ontonagon to Upper Entrance of Portage Canal MI, Black 
  River to Ontonagon MI and Saxon Harbor WI to Black River MI.

* WHEN...Until 8 PM EDT /7 PM CDT/ this evening.

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

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

$$

LSZ243>245-242300-
/O.CON.KMQT.SC.Y.0040.000000T0000Z-210425T0900Z/
Upper Entrance of Portage Canal to Eagle River MI-
Eagle River to Manitou Island MI-
Manitou Island to Point Isabelle MI-
1052 AM EDT Sat Apr 24 2021

...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 5 AM EDT SUNDAY...

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

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

* WHEN...Until 5 AM EDT Sunday.

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

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

$$

LSZ248-249-242300-
/O.CON.KMQT.SC.Y.0040.210424T1800Z-210425T1200Z/
Huron Islands to Marquette MI-Marquette to Munising MI-
1052 AM EDT Sat Apr 24 2021

...SMALL CRAFT ADVISORY REMAINS IN EFFECT FROM 2 PM THIS
AFTERNOON TO 8 AM EDT SUNDAY...

* WHAT...North winds 10 to 20 kt with gusts up to 30 kt and 
  waves 6 to 9 ft expected.

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

* WHEN...From 2 PM this afternoon to 8 AM EDT Sunday.

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

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

$$

LSZ250-251-242300-
/O.CON.KMQT.SC.Y.0040.210424T2100Z-210425T1200Z/
Munising to Grand Marais MI-Grand Marais to Whitefish Point MI-
1052 AM EDT Sat Apr 24 2021

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

* WHAT...North winds 15 to 25 kt with gusts up to 30 kt and 
  waves 5 to 8 ft expected.

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

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

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

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

$$

JAW
096 
WHUS73 KMQT 242031
MWWMQT

URGENT - MARINE WEATHER MESSAGE
National Weather Service Marquette MI
431 PM EDT Sat Apr 24 2021

LSZ248-249-250445-
/O.EXT.KMQT.SC.Y.0040.000000T0000Z-210425T1800Z/
Huron Islands to Marquette MI-Marquette to Munising MI-
431 PM EDT Sat Apr 24 2021

...SMALL CRAFT ADVISORY NOW IN EFFECT UNTIL 2 PM EDT SUNDAY...

* WHAT...North winds 10 to 20 kt with gusts up to 30 kt and 
  waves 5 to 8 ft occurring.

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

* WHEN...Until 2 PM EDT Sunday.

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

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

$$

LSZ250-251-250445-
/O.EXT.KMQT.SC.Y.0040.210424T2100Z-210425T1800Z/
Munising to Grand Marais MI-Grand Marais to Whitefish Point MI-
431 PM EDT Sat Apr 24 2021

...SMALL CRAFT ADVISORY NOW IN EFFECT UNTIL 2 PM EDT SUNDAY...

* WHAT...North winds 10 to 20 kt with gusts up to 30 kt and 
  waves 4 to 7 ft expected.

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

* WHEN...Until 2 PM EDT Sunday.

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

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

$$

LSZ244-250445-
/O.EXT.KMQT.SC.Y.0040.000000T0000Z-210425T1200Z/
Eagle River to Manitou Island MI-
431 PM EDT Sat Apr 24 2021

...SMALL CRAFT ADVISORY NOW IN EFFECT UNTIL 8 AM EDT SUNDAY...

* WHAT...North winds 10 to 20 kt with gusts up to 25 kt and 
  waves 4 to 7 ft occurring.

* WHERE...Eagle River to Manitou Island MI.

* WHEN...Until 8 AM EDT Sunday.

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

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

$$

LMZ221-248-250-250445-
/O.CON.KMQT.SC.Y.0040.210424T2100Z-210425T1200Z/
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-
431 PM EDT Sat Apr 24 2021

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

* WHAT...Northwest winds 10 to 20 kt with gusts up to 30 kt 
  expected.

* 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 AM EDT Sunday.

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

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

$$

LSZ240>242-250000-
/O.CON.KMQT.SC.Y.0040.000000T0000Z-210425T0000Z/
Saxon Harbor WI to Black River MI-Black River to Ontonagon MI-
Ontonagon to Upper Entrance of Portage Canal MI-
431 PM EDT Sat Apr 24 2021 /331 PM CDT Sat Apr 24 2021/

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

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

* WHERE...Ontonagon to Upper Entrance of Portage Canal MI, Black 
  River to Ontonagon MI and Saxon Harbor WI to Black River MI.

* WHEN...Until 8 PM EDT /7 PM CDT/ this evening.

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

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

$$

LSZ243-245-250445-
/O.CON.KMQT.SC.Y.0040.000000T0000Z-210425T0900Z/
Upper Entrance of Portage Canal to Eagle River MI-
Manitou Island to Point Isabelle MI-
431 PM EDT Sat Apr 24 2021

...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 5 AM EDT SUNDAY...

* WHAT...North winds 10 to 20 kt with gusts up to 25 kt and 
  waves 3 to 6 ft occurring.

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

* WHEN...Until 5 AM EDT Sunday.

* 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
327 
WHUS73 KMQT 250141
MWWMQT

URGENT - MARINE WEATHER MESSAGE
National Weather Service Marquette MI
941 PM EDT Sat Apr 24 2021

LSZ243-245-250600-
/O.EXT.KMQT.SC.Y.0040.000000T0000Z-210425T0600Z/
Upper Entrance of Portage Canal to Eagle River MI-
Manitou Island to Point Isabelle MI-
941 PM EDT Sat Apr 24 2021

...SMALL CRAFT ADVISORY NOW IN EFFECT UNTIL 2 AM EDT SUNDAY...

* WHAT...North winds 10 to 15 kt with gusts up to 25 kt and 
  waves 2 to 4 ft occurring.

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

* WHEN...Until 2 AM EDT Sunday.

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

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

$$

LMZ221-248-250-250945-
/O.CON.KMQT.SC.Y.0040.000000T0000Z-210425T1200Z/
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-
941 PM EDT Sat Apr 24 2021

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

* WHAT...Northwest winds 10 to 20 kt with gusts up to 30 kt 
  occurring.

* 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 AM EDT Sunday.

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

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

$$

LSZ248-249-250945-
/O.CON.KMQT.SC.Y.0040.000000T0000Z-210425T1800Z/
Huron Islands to Marquette MI-Marquette to Munising MI-
941 PM EDT Sat Apr 24 2021

...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 2 PM EDT SUNDAY...

* WHAT...North winds 10 to 20 kt with gusts up to 30 kt and 
  waves 5 to 8 ft occurring.

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

* WHEN...Until 2 PM EDT Sunday.

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

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

$$

LSZ250-251-250945-
/O.CON.KMQT.SC.Y.0040.000000T0000Z-210425T1800Z/
Munising to Grand Marais MI-Grand Marais to Whitefish Point MI-
941 PM EDT Sat Apr 24 2021

...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 2 PM EDT SUNDAY...

* WHAT...North winds 10 to 20 kt with gusts up to 30 kt and 
  waves 4 to 7 ft occurring.

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

* WHEN...Until 2 PM EDT Sunday.

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

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

$$

LSZ244-250945-
/O.CON.KMQT.SC.Y.0040.000000T0000Z-210425T1200Z/
Eagle River to Manitou Island MI-
941 PM EDT Sat Apr 24 2021

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

* WHAT...North winds 10 to 15 kt and waves 3 to 5 ft occurring.

* WHERE...Eagle River to Manitou Island MI.

* WHEN...Until 8 AM EDT Sunday.

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

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

$$
381 
WHUS73 KMQT 250740
MWWMQT

URGENT - MARINE WEATHER MESSAGE
National Weather Service Marquette MI
340 AM EDT Sun Apr 25 2021

LSZ245-251600-
/O.NEW.KMQT.SC.Y.0041.210425T0740Z-210425T1600Z/
Manitou Island to Point Isabelle MI-
340 AM EDT Sun Apr 25 2021

...SMALL CRAFT ADVISORY IN EFFECT UNTIL NOON EDT TODAY...

* WHAT...North winds 10 to 15 kt occurring.

* WHERE...Manitou Island to Point Isabelle MI.

* WHEN...Until noon EDT today.

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

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

$$

LMZ221-248-250-251600-
/O.EXT.KMQT.SC.Y.0040.000000T0000Z-210425T1600Z/
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-
340 AM EDT Sun Apr 25 2021

...SMALL CRAFT ADVISORY NOW IN EFFECT UNTIL NOON EDT TODAY...

* WHAT...Northwest winds 10 to 20 kt with gusts up to 25 kt 
  occurring.

* 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 noon EDT today.

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

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

$$

LSZ244-251600-
/O.EXT.KMQT.SC.Y.0040.000000T0000Z-210425T1600Z/
Eagle River to Manitou Island MI-
340 AM EDT Sun Apr 25 2021

...SMALL CRAFT ADVISORY NOW IN EFFECT UNTIL NOON EDT TODAY...

* WHAT...North winds 5 to 15 kt and waves 2 to 4 ft occurring.

* WHERE...Eagle River to Manitou Island MI.

* WHEN...Until noon EDT today.

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

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

$$

LSZ248-249-251630-
/O.EXT.KMQT.SC.Y.0040.000000T0000Z-210425T2000Z/
Huron Islands to Marquette MI-Marquette to Munising MI-
340 AM EDT Sun Apr 25 2021

...SMALL CRAFT ADVISORY NOW IN EFFECT UNTIL 4 PM EDT THIS
AFTERNOON...

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

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

* WHEN...Until 4 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.

&&

$$

LSZ250-251-251630-
/O.EXT.KMQT.SC.Y.0040.000000T0000Z-210425T2000Z/
Munising to Grand Marais MI-Grand Marais to Whitefish Point MI-
340 AM EDT Sun Apr 25 2021

...SMALL CRAFT ADVISORY NOW IN EFFECT UNTIL 4 PM EDT THIS
AFTERNOON...

* WHAT...North winds 10 to 20 kt with gusts up to 30 kt and 
  waves 5 to 8 ft occurring.

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

* WHEN...Until 4 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.

&&

$$
872 
WHUS73 KMQT 251346
MWWMQT

URGENT - MARINE WEATHER MESSAGE
National Weather Service Marquette MI
946 AM EDT Sun Apr 25 2021

LSZ244-251500-
/O.CAN.KMQT.SC.Y.0040.000000T0000Z-210425T1600Z/
Eagle River to Manitou Island MI-
946 AM EDT Sun Apr 25 2021

...SMALL CRAFT ADVISORY IS CANCELLED...

$$

LSZ245-251500-
/O.CAN.KMQT.SC.Y.0041.000000T0000Z-210425T1600Z/
Manitou Island to Point Isabelle MI-
946 AM EDT Sun Apr 25 2021

...SMALL CRAFT ADVISORY IS CANCELLED...

$$

LMZ221-248-250-251600-
/O.CON.KMQT.SC.Y.0040.000000T0000Z-210425T1600Z/
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-
946 AM EDT Sun Apr 25 2021

...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL NOON EDT TODAY...

* WHAT...North winds 10 to 15 kt with gusts up to 25 kt 
  occurring.

* 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 noon EDT today.

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

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

$$

LSZ248-249-252000-
/O.CON.KMQT.SC.Y.0040.000000T0000Z-210425T2000Z/
Huron Islands to Marquette MI-Marquette to Munising MI-
946 AM EDT Sun Apr 25 2021

...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 4 PM EDT THIS
AFTERNOON...

* WHAT...North winds 10 to 20 kt with gusts up to 25 kt and 
  waves 3 to 6 ft occurring.

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

* WHEN...Until 4 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.

&&

$$

LSZ250-251-252000-
/O.CON.KMQT.SC.Y.0040.000000T0000Z-210425T2000Z/
Munising to Grand Marais MI-Grand Marais to Whitefish Point MI-
946 AM EDT Sun Apr 25 2021

...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 4 PM EDT THIS
AFTERNOON...

* WHAT...North winds 10 to 20 kt with gusts up to 25 kt and 
  waves 4 to 7 ft occurring.

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

* WHEN...Until 4 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.

&&

$$

JAW
804 
WHUS73 KMQT 252015
MWWMQT

URGENT - MARINE WEATHER MESSAGE
National Weather Service Marquette MI
415 PM EDT Sun Apr 25 2021

LSZ248>250-260415-
/O.EXP.KMQT.SC.Y.0040.000000T0000Z-210425T2000Z/
/O.NEW.KMQT.SC.Y.0042.210426T1500Z-210427T1000Z/
Huron Islands to Marquette MI-Marquette to Munising MI-
Munising to Grand Marais MI-
415 PM EDT Sun Apr 25 2021

...SMALL CRAFT ADVISORY IN EFFECT FROM 11 AM MONDAY TO 6 AM EDT
TUESDAY...

* WHAT...Southeast winds 10 to 20 kt with gusts up to 30 kt and 
  waves 2 to 5 ft expected.

* WHERE...Huron Islands to Marquette MI, Marquette to Munising 
  MI and Munising to Grand Marais MI.

* WHEN...From 11 AM Monday to 6 AM EDT Tuesday.

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

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

$$

LSZ251-260415-
/O.EXP.KMQT.SC.Y.0040.000000T0000Z-210425T2000Z/
/O.NEW.KMQT.GL.A.0009.210426T2200Z-210427T1000Z/
Grand Marais to Whitefish Point MI-
415 PM EDT Sun Apr 25 2021

...GALE WATCH IN EFFECT FROM MONDAY EVENING THROUGH LATE MONDAY
NIGHT...

* WHAT...Southeast winds 15 to 25 kt with gusts up to 40 kt and 
  waves 2 to 5 ft possible.

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

* WHEN...From Monday evening through late Monday night.

* IMPACTS...Strong winds can cause hazardous waves which could
  capsize or damage vessels and reduce visibility.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Mariners should consider altering plans to avoid possible
hazardous conditions.  Remain in port, seek safe harbor, alter
course, and/or secure the vessel for severe wind and waves.

&&

$$

LSZ244-260415-
/O.NEW.KMQT.SC.Y.0042.210426T1100Z-210426T2000Z/
/O.NEW.KMQT.GL.A.0009.210426T2000Z-210427T0800Z/
Eagle River to Manitou Island MI-
415 PM EDT Sun Apr 25 2021

...SMALL CRAFT ADVISORY IN EFFECT FROM 7 AM TO 4 PM EDT MONDAY...
...GALE WATCH IN EFFECT FROM MONDAY AFTERNOON THROUGH LATE MONDAY
NIGHT...

* WHAT...For the Small Craft Advisory, southeast winds 15 to 25 
  kt with gusts up to 30 kt and waves 3 to 6 ft expected. For 
  the Gale Watch, southeast winds 15 to 25 kt with gusts up to 
  35 kt and waves 6 to 9 ft possible.

* WHERE...Eagle River to Manitou Island MI.

* WHEN...For the Small Craft Advisory, from 7 AM to 4 PM EDT 
  Monday. For the Gale Watch, from Monday afternoon through late 
  Monday night.

* IMPACTS...Strong winds can cause hazardous waves which could
  capsize or damage vessels and reduce visibility.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Mariners should consider altering plans to avoid possible
hazardous conditions.  Remain in port, seek safe harbor, alter
course, and/or secure the vessel for severe wind and waves.

&&

$$

LMZ221-260415-
/O.NEW.KMQT.SC.Y.0042.210426T1400Z-210427T0600Z/
Green Bay North of line from Cedar River MI to Rock Island
Passage-
415 PM EDT Sun Apr 25 2021

...SMALL CRAFT ADVISORY IN EFFECT FROM 10 AM MONDAY TO 2 AM EDT
TUESDAY...

* WHAT...East winds 15 to 25 kt and waves 2 to 5 ft expected.

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

* WHEN...From 10 AM Monday to 2 AM EDT Tuesday.

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

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

$$

LSZ240-241-260415-
/O.NEW.KMQT.SC.Y.0042.210426T1100Z-210426T1700Z/
Saxon Harbor WI to Black River MI-Black River to Ontonagon MI-
415 PM EDT Sun Apr 25 2021 /315 PM CDT Sun Apr 25 2021/

...SMALL CRAFT ADVISORY IN EFFECT FROM 7 AM EDT /6 AM CDT/ TO
1 PM EDT /NOON CDT/ MONDAY...

* WHAT...Southeast winds 10 to 15 kt with gusts up to 25 kt 
  expected.

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

* WHEN...From 7 AM EDT /6 AM CDT/ to 1 PM EDT /noon 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.

&&

$$

LSZ242-260415-
/O.NEW.KMQT.SC.Y.0042.210426T1100Z-210426T2200Z/
Ontonagon to Upper Entrance of Portage Canal MI-
415 PM EDT Sun Apr 25 2021

...SMALL CRAFT ADVISORY IN EFFECT FROM 7 AM TO 6 PM EDT MONDAY...

* WHAT...Southeast winds 10 to 15 kt with gusts up to 30 kt 
  expected.

* WHERE...Ontonagon to Upper Entrance of Portage Canal MI.

* WHEN...From 7 AM to 6 PM 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.

&&

$$

LSZ243-245-246-260415-
/O.NEW.KMQT.SC.Y.0042.210426T1100Z-210427T1000Z/
Upper Entrance of Portage Canal to Eagle River MI-
Manitou Island to Point Isabelle MI-
Point Isabelle to Lower Entrance of Portage Canal MI-
415 PM EDT Sun Apr 25 2021

...SMALL CRAFT ADVISORY IN EFFECT FROM 7 AM MONDAY TO 6 AM EDT
TUESDAY...

* WHAT...Southeast winds 10 to 20 kt with gusts up to 35 kt and 
  waves 5 to 8 ft expected.

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

* WHEN...From 7 AM Monday to 6 AM EDT Tuesday.

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

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

$$

LMZ248-250-260415-
/O.NEW.KMQT.SC.Y.0042.210426T1400Z-210427T1200Z/
Seul Choix Point to Point Detour MI-
5NM East of a line from Fairport MI to Rock Island Passage-
415 PM EDT Sun Apr 25 2021

...SMALL CRAFT ADVISORY IN EFFECT FROM 10 AM MONDAY TO 8 AM EDT
TUESDAY...

* WHAT...East winds 15 to 25 kt with gusts up to 30 kt and waves 
  3 to 6 ft expected.

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

* WHEN...From 10 AM Monday to 8 AM EDT Tuesday.

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

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

$$

LSZ264-266-260415-
/O.NEW.KMQT.GL.A.0009.210426T2000Z-210427T0800Z/
Lake Superior from Upper Entrance to Portage Canal to Manitou
Island MI 5NM off shore to the US/Canadian Border-
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-
415 PM EDT Sun Apr 25 2021

...GALE WATCH IN EFFECT FROM MONDAY AFTERNOON THROUGH LATE MONDAY
NIGHT...

* WHAT...Southeast winds 20 to 30 kt with gusts up to 35 kt and 
  waves 6 to 11 ft possible.

* WHERE...Lake Superior from Upper Entrance to Portage Canal to 
  Manitou Island MI 5NM off shore to the US/Canadian Border and 
  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.

* WHEN...From Monday afternoon through late Monday night.

* IMPACTS...Strong winds can cause hazardous waves which could
  capsize or damage vessels and reduce visibility.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Mariners should consider altering plans to avoid possible
hazardous conditions.  Remain in port, seek safe harbor, alter
course, and/or secure the vessel for severe wind and waves.

&&

$$

LSZ267-260415-
/O.NEW.KMQT.GL.A.0009.210426T2200Z-210427T1000Z/
Lake Superior from Grand Marais MI to Whitefish Point MI 5NM off
shore to the US/Canadian border-
415 PM EDT Sun Apr 25 2021

...GALE WATCH IN EFFECT FROM MONDAY EVENING THROUGH LATE MONDAY
NIGHT...

* WHAT...Southeast winds 20 to 30 kt with gusts up to 40 kt and 
  waves 6 to 9 ft possible.

* WHERE...Lake Superior from Grand Marais MI to Whitefish Point 
  MI 5NM off shore to the US/Canadian border.

* WHEN...From Monday evening through late Monday night.

* IMPACTS...Strong winds can cause hazardous waves which could
  capsize or damage vessels and reduce visibility.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Mariners should consider altering plans to avoid possible
hazardous conditions.  Remain in port, seek safe harbor, alter
course, and/or secure the vessel for severe wind and waves.

&&

$$

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 24, 1:11 AM EDT, 3 hours 29 minutes earlier.

Area forecast discussion, Apr 24, 1:11 AM EDT, 3 hours 29 minutes before
Area Forecast Discussion
National Weather Service Marquette MI
111 AM EDT Sat Apr 24 2021

.SHORT TERM...(This evening through Saturday)
Issued at 350 PM EDT FRI APR 23 2021

GOES imagery and RAP analysis show a shrtwv lifting NE through WI
this afternoon, weakening on its approach to the UP. A few
scatterers showing up on adjacent radars (MQTs down through mid next
week), but abundant dry air ahead of the wave is limiting this rain
to virga, perhaps a few sprinkles at best. As this wave continues to
lift to the NE, Upper Michigan will become overcast skies, which
will limit add'l warming, after temperatures climbed abv guidance
quite early this morning. After climbing into the low 60s across the
central and east, Marquette Proper is back into the low 50s as a
lake breeze has moved through. Included sprinkles to the fcst
through the rest of the afternoon evening as GOES imagery suggest
cloud ice is present in these mid-level clouds, but still haven't
seen anything hit the spares webcam network.

Tonight, a cold front will approach Upper Michigan bringing rain
showers across the west half late tonight/early tomorrow morning as
the column saturates.  After a few hours, these showers will begin
to mix in with snow, before model soundings suggest pcpn becoming
all snow. Not expecting any accumulation by sunrise tomorrow, but
the changeover to snow should begin just before.

The cold front will reach western UP around sunrise or just before.
This will leave high temperatures for the day across the west being
right near sunrise; however, there will be a little time to warm up
across the south and east. Therefore, temperatures will reach around
50 across the south and across the east, with 40s across the central
and 30s across the west...falling through the day as the front moves
through. Snow showers across the west will last 6-8 hours or so,
before models suggest column saturation and ice nuclei end. Could
see a sloppy inch or two across the west, especially in the higher
terrain where some lake-enhancement is expected.

.LONG TERM...(Saturday night through Friday)
Issued at 251 PM EDT FRI APR 23 2021

Upper air pattern will consist of a closed low off the Pacific NW
coast and a trough in the upper Great Lakes 00z Sun. After the
trough moves by, shortwave ridging will build into the upper Great
Lakes. A deep trough will move into the western U.S. 00z Tue with a
amplified ridge over the eastern U.S. Deeper moisture and 850-500 mb
q-vector convergence moves into the area Sun night and remains into
Mon. Did not make too many changes to the going forecast.

In the extended, the GFS and ECMWF show a deep 500 mb trough over
the Rockies 12z Tue with a ridge over the ern U.S. This trough moves
slowly east 12z Wed and will be moving into the plains then. The
trough then moves into the upper Great Lakes 12z Thu with a
shortwave heading towards our area and the trough remains into 12z
Fri. This will mean a slow sfc pattern for movement of fronts and
systems and temperatures going back below normal along with wet
weather.
&&

.AVIATION...(For the 06Z TAFS through 06Z Saturday night)
Issued at 110 AM EDT SAT APR 24 2021

VFR conditions are expected to drop to MVFR late tonight as a cold
front approaches late tonight. Light rain will begin before a period
of rain then snow. IFR cigs are expected to accompany this front
with some IFR vsbys as the snow becomes heavier. Cigs may also fall
to near LIFR at IWD Saturday morning and at CMX/SAW. Conditions
should improve to MVFR or near MVFR by late Saturday afternoon.
&&

.MARINE...(For the 4 PM Lake Superior forecast issuance)
Issued at 350 PM EDT FRI APR 23 2021

A cold front will pass over Lake Superior late tonight, with
northerly winds gusting up to 30 knots as the front moves through.
Models suggest a few gale force gusts are possible across the north
central and east right as the front moves through, otherwise winds
across the west will relax blo 15 knots, as 30 knots continue across
the east. Winds relax for Sunday before Lake Superior lies between a
high pressure across Quebec and an approaching low pressure through
the Northern Plains on Monday, with southeasterly winds gusting up
to 30 knots across the east. Winds fall blo 20 knots by Tuesday and
are expected to remain there through the rest of the fcst period.
&&

.MQT WATCHES/WARNINGS/ADVISORIES...
Upper Michigan...
None.
Lake Superior...
None.
Lake Michigan...
None.
&&

SHORT TERM...JAW
LONG TERM...07
AVIATION...JLB
MARINE...JAW
Hazardous weather outlook, Apr 23, 3:44 PM EDT, 12 hours 56 minutes before
Hazardous Weather Outlook
National Weather Service Marquette MI
344 PM EDT Fri Apr 23 2021

MIZ001>007-009>014-084-085-241200-
Keweenaw-Ontonagon-Northern Houghton-Baraga-Marquette-Alger-Luce-
Gogebic-Iron-Dickinson-Menominee-Delta-Southern Schoolcraft-
Southern Houghton-Northern Schoolcraft-
344 PM EDT Fri Apr 23 2021 /244 PM CDT Fri Apr 23 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...Saturday through Thursday

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>267-241200-
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-
344 PM EDT Fri Apr 23 2021 /244 PM CDT Fri Apr 23 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...Saturday through Thursday

A few north gale force gusts to 35 knots are possible Saturday
afternoon across the east half of Lake Superior.

.SPOTTER INFORMATION STATEMENT...

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

LMZ221-248-250-241200-
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-
344 PM EDT Fri Apr 23 2021

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

.DAY ONE...Tonight

No hazardous weather is expected at this time.

.DAYS TWO THROUGH SEVEN...Saturday through Thursday

No hazardous weather is expected at this time.

.SPOTTER INFORMATION STATEMENT...

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

07

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.