Alert archive / Michigan / Gale Warnings in 2021

Gale Warning 25, NWS Marquette, MI

September 24, 2021

NWS Marquette, MI issued this gale warning at Sep 24, 2021, 4:44 AM EDT. It took effect at Sep 24, 2021, 11:00 PM EDT. It was in force for 7 hr. No storm report in the archive falls inside the area while it was in force.

The area

The counties it named.

The facts

Issued
Sep 24, 2021, 4:44 AM EDT (08:44 UTC)
In effect from
Sep 24, 2021, 11:00 PM EDT
Expired
Sep 25, 2021, 6:00 AM EDT
In force
7 hr
Issued by
NWS Marquette, MI

The text

As transmitted.

082 
WHUS73 KMQT 240844
MWWMQT

URGENT - MARINE WEATHER MESSAGE
National Weather Service Marquette MI
444 AM EDT Fri Sep 24 2021

LSZ249-250-241645-
/O.CON.KMQT.SC.Y.0109.000000T0000Z-210924T1000Z/
/O.NEW.KMQT.GL.W.0025.210925T0300Z-210925T0900Z/
Marquette to Munising MI-Munising to Grand Marais MI-
444 AM EDT Fri Sep 24 2021

...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 6 AM EDT EARLY
THIS MORNING...
...GALE WARNING IN EFFECT FROM 11 PM THIS EVENING TO 5 AM EDT
SATURDAY...

* WHAT...For the Gale Warning, northwest winds 20 to 30 kt with
  gusts up to 40 kt and waves 7 to 10 ft expected. For the Small
  Craft Advisory, northwest winds 10 to 15 kt with gusts up to 20
  kt and waves 3 to 5 ft occurring.

* WHERE...Marquette to Munising MI and Munising to Grand Marais 
  MI.

* WHEN...For the Gale Warning, from 11 PM this evening to 5 AM 
  EDT Saturday. For the Small Craft Advisory, until 6 AM EDT 
  early this morning.

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

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

$$

LSZ251-241645-
/O.CON.KMQT.SC.Y.0109.000000T0000Z-210924T1000Z/
/O.NEW.KMQT.GL.W.0025.210925T0600Z-210925T1000Z/
Grand Marais to Whitefish Point MI-
444 AM EDT Fri Sep 24 2021

...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 6 AM EDT EARLY
THIS MORNING...
...GALE WARNING IN EFFECT FROM 2 AM TO 6 AM EDT SATURDAY...

* WHAT...For the Gale Warning, northwest winds 20 to 30 kt with 
  gusts up to 40 kt and waves 6 to 9 ft expected. For the Small 
  Craft Advisory, north winds 10 to 15 kt with gusts up to 20 kt 
  and waves 3 to 5 ft occurring.

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

* WHEN...For the Gale Warning, from 2 AM to 6 AM EDT Saturday. 
  For the Small Craft Advisory, until 6 AM EDT early this 
  morning.

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

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

$$

LSZ266-241645-
/O.NEW.KMQT.GL.W.0025.210925T0300Z-210925T0900Z/
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-
444 AM EDT Fri Sep 24 2021

...GALE WARNING IN EFFECT FROM 11 PM THIS EVENING TO 5 AM EDT
SATURDAY...

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

* WHERE...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 11 PM this evening to 5 AM EDT Saturday.

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

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

$$

LSZ267-241645-
/O.NEW.KMQT.GL.W.0025.210925T0600Z-210925T1000Z/
Lake Superior from Grand Marais MI to Whitefish Point MI 5NM off
shore to the US/Canadian border-
444 AM EDT Fri Sep 24 2021

...GALE WARNING IN EFFECT FROM 2 AM TO 6 AM EDT SATURDAY...

* WHAT...Northwest winds 20 to 30 kt with gusts up to 40 kt and 
  waves 7 to 10 ft expected.

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

* WHEN...From 2 AM to 6 AM EDT Saturday.

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

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

$$

LSZ241-241645-
/O.NEW.KMQT.SC.Y.0114.210924T2000Z-210926T0300Z/
Black River to Ontonagon MI-
444 AM EDT Fri Sep 24 2021 /344 AM CDT Fri Sep 24 2021/

...SMALL CRAFT ADVISORY IN EFFECT FROM 4 PM EDT /3 PM CDT/ THIS
AFTERNOON TO 11 PM EDT /10 PM CDT/ SATURDAY...

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

* WHERE...Black River to Ontonagon MI.

* WHEN...From 4 PM EDT /3 PM CDT/ this afternoon to 11 PM EDT 
  /10 PM CDT/ Saturday.

* 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>244-241645-
/O.NEW.KMQT.SC.Y.0114.210924T2000Z-210926T0600Z/
Ontonagon to Upper Entrance of Portage Canal MI-
Upper Entrance of Portage Canal to Eagle River MI-
Eagle River to Manitou Island MI-
444 AM EDT Fri Sep 24 2021

...SMALL CRAFT ADVISORY IN EFFECT FROM 4 PM THIS AFTERNOON TO
2 AM EDT SUNDAY...

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

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

* WHEN...From 4 PM this afternoon to 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.

&&

$$

LSZ245>247-241645-
/O.NEW.KMQT.SC.Y.0114.210924T2100Z-210926T0300Z/
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-
444 AM EDT Fri Sep 24 2021

...SMALL CRAFT ADVISORY IN EFFECT FROM 5 PM THIS AFTERNOON TO
11 PM EDT SATURDAY...

* WHAT...West winds 10 to 20 kt with gusts up to 30 kt and waves 
  up to 3 ft expected.

* WHERE...Manitou Island to Point Isabelle MI, Point Isabelle to 
  Lower Entrance of Portage Canal MI and Lower Entrance of 
  Portage Canal To Huron Islands MI Including Keweenaw and Huron 
  Bays.

* WHEN...From 5 PM this afternoon to 11 PM EDT Saturday.

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

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

$$

LSZ248-241645-
/O.NEW.KMQT.SC.Y.0114.210924T2100Z-210926T0300Z/
Huron Islands to Marquette MI-
444 AM EDT Fri Sep 24 2021

...SMALL CRAFT ADVISORY IN EFFECT FROM 5 PM THIS AFTERNOON TO
11 PM EDT SATURDAY...

* WHAT...West winds 15 to 25 kt with gusts up to 33 kt and waves 
  3 to 6 ft expected.

* WHERE...Huron Islands to Marquette MI.

* WHEN...From 5 PM this afternoon to 11 PM EDT Saturday.

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

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

$$

LMZ221-248-250-241645-
/O.NEW.KMQT.SC.Y.0114.210924T2000Z-210925T1200Z/
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-
444 AM EDT Fri Sep 24 2021

...SMALL CRAFT ADVISORY IN EFFECT FROM 4 PM THIS AFTERNOON TO
8 AM EDT SATURDAY...

* WHAT...South winds 15 to 25 kt with gusts up to 30 kt becoming
  northwest tonight, and waves 2 to 5 ft 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 4 PM this afternoon to 8 AM EDT Saturday.

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

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

$$
4 follow-up statements
555 
WHUS73 KMQT 241411
MWWMQT

URGENT - MARINE WEATHER MESSAGE
National Weather Service Marquette MI
1011 AM EDT Fri Sep 24 2021

LSZ249-250-266-242215-
/O.CON.KMQT.GL.W.0025.210925T0300Z-210925T0900Z/
Marquette to Munising MI-Munising to Grand Marais MI-
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-
1011 AM EDT Fri Sep 24 2021

...GALE WARNING REMAINS IN EFFECT FROM 11 PM THIS EVENING TO 5 AM
EDT SATURDAY...

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

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

* WHEN...From 11 PM this evening to 5 AM EDT Saturday.

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

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

$$

LSZ251-267-242215-
/O.CON.KMQT.GL.W.0025.210925T0600Z-210925T1000Z/
Grand Marais to Whitefish Point MI-
Lake Superior from Grand Marais MI to Whitefish Point MI 5NM off
shore to the US/Canadian border-
1011 AM EDT Fri Sep 24 2021

...GALE WARNING REMAINS IN EFFECT FROM 2 AM TO 6 AM EDT
SATURDAY...

* WHAT...Northwest winds 20 to 30 kt with gusts up to 40 kt and 
  waves 7 to 10 ft expected.

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

* WHEN...From 2 AM to 6 AM EDT Saturday.

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

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

$$

LSZ241-242215-
/O.CON.KMQT.SC.Y.0114.210924T2000Z-210926T0300Z/
Black River to Ontonagon MI-
1011 AM EDT Fri Sep 24 2021 /911 AM CDT Fri Sep 24 2021/

...SMALL CRAFT ADVISORY REMAINS IN EFFECT FROM 4 PM EDT /3 PM
CDT/ THIS AFTERNOON TO 11 PM EDT /10 PM CDT/ SATURDAY...

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

* WHERE...Black River to Ontonagon MI.

* WHEN...From 4 PM EDT /3 PM CDT/ this afternoon to 11 PM EDT 
  /10 PM CDT/ Saturday.

* 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>244-242215-
/O.CON.KMQT.SC.Y.0114.210924T2000Z-210926T0600Z/
Ontonagon to Upper Entrance of Portage Canal MI-
Upper Entrance of Portage Canal to Eagle River MI-
Eagle River to Manitou Island MI-
1011 AM EDT Fri Sep 24 2021

...SMALL CRAFT ADVISORY REMAINS IN EFFECT FROM 4 PM THIS
AFTERNOON TO 2 AM EDT SUNDAY...

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

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

* WHEN...From 4 PM this afternoon to 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.

&&

$$

LSZ245>247-242215-
/O.CON.KMQT.SC.Y.0114.210924T2100Z-210926T0300Z/
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-
1011 AM EDT Fri Sep 24 2021

...SMALL CRAFT ADVISORY REMAINS IN EFFECT FROM 5 PM THIS
AFTERNOON TO 11 PM EDT SATURDAY...

* WHAT...West winds 10 to 20 kt with gusts up to 30 kt and waves 
  up to 3 ft expected.

* WHERE...Manitou Island to Point Isabelle MI, Lower Entrance of 
  Portage Canal To Huron Islands MI Including Keweenaw and Huron 
  Bays and Point Isabelle to Lower Entrance of Portage Canal MI.

* WHEN...From 5 PM this afternoon to 11 PM EDT Saturday.

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

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

$$

LSZ248-242215-
/O.CON.KMQT.SC.Y.0114.210924T2100Z-210926T0300Z/
Huron Islands to Marquette MI-
1011 AM EDT Fri Sep 24 2021

...SMALL CRAFT ADVISORY REMAINS IN EFFECT FROM 5 PM THIS
AFTERNOON TO 11 PM EDT SATURDAY...

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

* WHERE...Huron Islands to Marquette MI.

* WHEN...From 5 PM this afternoon to 11 PM EDT Saturday.

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

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

$$

LMZ221-248-250-242215-
/O.CON.KMQT.SC.Y.0114.210924T2000Z-210925T1200Z/
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 Fri Sep 24 2021

...SMALL CRAFT ADVISORY REMAINS IN EFFECT FROM 4 PM THIS
AFTERNOON TO 8 AM EDT SATURDAY...

* WHAT...Southwest winds 15 to 25 kt with gusts up to 30 kt and 
  waves 2 to 5 ft 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 4 PM this afternoon to 8 AM EDT Saturday.

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

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

$$
949 
WHUS73 KMQT 242021
MWWMQT

URGENT - MARINE WEATHER MESSAGE
National Weather Service Marquette MI
421 PM EDT Fri Sep 24 2021

LSZ249-250-266-250430-
/O.CON.KMQT.GL.W.0025.210925T0300Z-210925T0900Z/
Marquette to Munising MI-Munising to Grand Marais MI-
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-
421 PM EDT Fri Sep 24 2021

...GALE WARNING REMAINS IN EFFECT FROM 11 PM THIS EVENING TO 5 AM
EDT SATURDAY...

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

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

* WHEN...From 11 PM this evening to 5 AM EDT Saturday.

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

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

$$

LSZ251-267-250430-
/O.CON.KMQT.GL.W.0025.210925T0600Z-210925T1000Z/
Grand Marais to Whitefish Point MI-
Lake Superior from Grand Marais MI to Whitefish Point MI 5NM off
shore to the US/Canadian border-
421 PM EDT Fri Sep 24 2021

...GALE WARNING REMAINS IN EFFECT FROM 2 AM TO 6 AM EDT
SATURDAY...

* WHAT...Northwest winds 20 to 30 kt with gusts up to 40 kt and 
  waves 6 to 11 ft expected.

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

* WHEN...From 2 AM to 6 AM EDT Saturday.

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

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

$$

LSZ241-250430-
/O.CON.KMQT.SC.Y.0114.000000T0000Z-210926T0300Z/
Black River to Ontonagon MI-
421 PM EDT Fri Sep 24 2021 /321 PM CDT Fri Sep 24 2021/

...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 11 PM EDT /10 PM
CDT/ SATURDAY...

* WHAT...West winds 10 to 20 kt with gusts up to 30 kt and waves 
  3 to 6 ft occurring.

* WHERE...Black River to Ontonagon MI.

* WHEN...Until 11 PM EDT /10 PM CDT/ Saturday.

* 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>244-250430-
/O.CON.KMQT.SC.Y.0114.000000T0000Z-210926T0600Z/
Ontonagon to Upper Entrance of Portage Canal MI-
Upper Entrance of Portage Canal to Eagle River MI-
Eagle River to Manitou Island MI-
421 PM EDT Fri Sep 24 2021

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

* WHAT...Northwest winds 15 to 25 kt with gusts up to 30 kt and 
  waves 4 to 7 ft occurring.

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

&&

$$

LSZ245>247-250430-
/O.CON.KMQT.SC.Y.0114.210924T2100Z-210926T0300Z/
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-
421 PM EDT Fri Sep 24 2021

...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 11 PM EDT
SATURDAY...

* WHAT...West winds 10 to 20 kt with gusts up to 30 kt and waves 
  up to 3 ft expected.

* WHERE...Manitou Island to Point Isabelle MI, Lower Entrance of 
  Portage Canal To Huron Islands MI Including Keweenaw and Huron 
  Bays and Point Isabelle to Lower Entrance of Portage Canal MI.

* WHEN...Until 11 PM EDT Saturday.

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

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

$$

LSZ248-250430-
/O.CON.KMQT.SC.Y.0114.210924T2100Z-210926T0300Z/
Huron Islands to Marquette MI-
421 PM EDT Fri Sep 24 2021

...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 11 PM EDT
SATURDAY...

* WHAT...West winds 15 to 25 kt with gusts up to 35 kt and waves 
  3 to 6 ft expected.

* WHERE...Huron Islands to Marquette MI.

* WHEN...Until 11 PM EDT Saturday.

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

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

$$

LMZ221-248-250-250430-
/O.CON.KMQT.SC.Y.0114.000000T0000Z-210925T1200Z/
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-
421 PM EDT Fri Sep 24 2021

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

* WHAT...West winds 15 to 25 kt with gusts up to 35 kt and waves 
  2 to 5 ft 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 Saturday.

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

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

$$

JSS
486 
WHUS73 KMQT 250234
MWWMQT

URGENT - MARINE WEATHER MESSAGE
National Weather Service Marquette MI
1034 PM EDT Fri Sep 24 2021

LSZ249-250-251045-
/O.CON.KMQT.GL.W.0025.210925T0300Z-210925T0900Z/
/O.EXB.KMQT.SC.Y.0114.210925T0900Z-210926T1000Z/
Marquette to Munising MI-Munising to Grand Marais MI-
1034 PM EDT Fri Sep 24 2021

...GALE WARNING REMAINS IN EFFECT UNTIL 5 AM EDT SATURDAY...
...SMALL CRAFT ADVISORY IN EFFECT FROM 5 AM SATURDAY TO 6 AM EDT
SUNDAY...

* WHAT...For the Gale Warning, northwest winds 20 to 30 kt with 
  gusts up to 35 kt and waves 7 to 10 ft expected. For the Small 
  Craft Advisory, west winds 10 to 20 kt with gusts up to 25 kt 
  and waves 5 to 8 ft expected.

* WHERE...Marquette to Munising MI and Munising to Grand Marais 
  MI.

* WHEN...For the Gale Warning, until 5 AM EDT Saturday. For the 
  Small Craft Advisory, from 5 AM Saturday to 6 AM EDT Sunday.

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

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

$$

LSZ266-250900-
/O.CON.KMQT.GL.W.0025.210925T0300Z-210925T0900Z/
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-
1034 PM EDT Fri Sep 24 2021

...GALE WARNING REMAINS IN EFFECT UNTIL 5 AM EDT SATURDAY...

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

* WHERE...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...Until 5 AM EDT Saturday.

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

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

$$

LSZ251-267-251000-
/O.CON.KMQT.GL.W.0025.210925T0600Z-210925T1000Z/
Grand Marais to Whitefish Point MI-
Lake Superior from Grand Marais MI to Whitefish Point MI 5NM off
shore to the US/Canadian border-
1034 PM EDT Fri Sep 24 2021

...GALE WARNING REMAINS IN EFFECT FROM 2 AM TO 6 AM EDT
SATURDAY...

* WHAT...Northwest winds 20 to 30 kt with gusts up to 40 kt and 
  waves 6 to 11 ft expected.

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

* WHEN...From 2 AM to 6 AM EDT Saturday.

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

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

$$

LSZ248-251045-
/O.EXT.KMQT.SC.Y.0114.000000T0000Z-210926T0400Z/
Huron Islands to Marquette MI-
1034 PM EDT Fri Sep 24 2021

...SMALL CRAFT ADVISORY NOW IN EFFECT UNTIL MIDNIGHT EDT SATURDAY
NIGHT...

* WHAT...West winds 15 to 25 kt with gusts up to 35 kt and waves 
  3 to 6 ft occurring.

* WHERE...Huron Islands to Marquette MI.

* WHEN...Until midnight EDT Saturday night.

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

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

$$

LSZ241-251045-
/O.CON.KMQT.SC.Y.0114.000000T0000Z-210926T0300Z/
Black River to Ontonagon MI-
1034 PM EDT Fri Sep 24 2021 /934 PM CDT Fri Sep 24 2021/

...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 11 PM EDT /10 PM
CDT/ SATURDAY...

* WHAT...West winds 10 to 20 kt with gusts up to 30 kt and waves 
  3 to 6 ft occurring.

* WHERE...Black River to Ontonagon MI.

* WHEN...Until 11 PM EDT /10 PM CDT/ Saturday.

* 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>244-251045-
/O.CON.KMQT.SC.Y.0114.000000T0000Z-210926T0600Z/
Ontonagon to Upper Entrance of Portage Canal MI-
Upper Entrance of Portage Canal to Eagle River MI-
Eagle River to Manitou Island MI-
1034 PM EDT Fri Sep 24 2021

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

* WHAT...West winds 15 to 25 kt with gusts up to 30 kt and waves 
  4 to 7 ft occurring.

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

&&

$$

LSZ245>247-251045-
/O.CON.KMQT.SC.Y.0114.000000T0000Z-210926T0300Z/
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-
1034 PM EDT Fri Sep 24 2021

...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 11 PM EDT
SATURDAY...

* WHAT...Northwest winds 15 to 25 kt with gusts up to 30 kt
  becoming west. Waves up to 3 ft occurring.

* WHERE...Manitou Island to Point Isabelle MI, Lower Entrance of 
  Portage Canal To Huron Islands MI Including Keweenaw and Huron 
  Bays and Point Isabelle to Lower Entrance of Portage Canal MI.

* WHEN...Until 11 PM EDT Saturday.

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

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

$$

LMZ221-248-250-251045-
/O.CON.KMQT.SC.Y.0114.000000T0000Z-210925T1200Z/
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-
1034 PM EDT Fri Sep 24 2021

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

* WHAT...Southwest winds 15 to 25 kt with gusts up to 35 kt
  becoming northwest 15 to 25 knots with gusts to 35 knots. Waves
  3 to 6 ft subsiding to 2 to 4 ft.

* 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 Saturday.

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

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

$$

JV
629 
WHUS73 KMQT 250828
MWWMQT

URGENT - MARINE WEATHER MESSAGE
National Weather Service Marquette MI
428 AM EDT Sat Sep 25 2021

LSZ249-250-251630-
/O.CAN.KMQT.GL.W.0025.000000T0000Z-210925T0900Z/
/O.EXT.KMQT.SC.Y.0114.210925T0828Z-210926T1000Z/
Marquette to Munising MI-Munising to Grand Marais MI-
428 AM EDT Sat Sep 25 2021

...SMALL CRAFT ADVISORY NOW IN EFFECT UNTIL 6 AM EDT SUNDAY...
...GALE WARNING IS CANCELLED...

* WHAT...West winds 15 to 25 kt with gusts up to 30 kt and waves 
  7 to 10 ft occurring.

* WHERE...Marquette to Munising MI and Munising to Grand Marais 
  MI.

* WHEN...Until 6 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.

&&

$$

LSZ266-250930-
/O.CAN.KMQT.GL.W.0025.000000T0000Z-210925T0900Z/
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-
428 AM EDT Sat Sep 25 2021

...GALE WARNING IS CANCELLED...

Winds have diminished to below gale force. Therefore, the gale
warning has been cancelled.

$$

LSZ251-251630-
/O.CON.KMQT.GL.W.0025.000000T0000Z-210925T1000Z/
/O.EXB.KMQT.SC.Y.0114.210925T1000Z-210926T1200Z/
Grand Marais to Whitefish Point MI-
428 AM EDT Sat Sep 25 2021

...GALE WARNING REMAINS IN EFFECT UNTIL 6 AM EDT EARLY THIS
MORNING...
...SMALL CRAFT ADVISORY IN EFFECT UNTIL 8 AM EDT SUNDAY...

* WHAT...For the Gale Warning, northwest winds 20 to 25 kt with 
  gusts up to 35 kt and waves 7 to 10 ft occurring. For the 
  Small Craft Advisory, west winds 10 to 20 kt with gusts up to 
  30 kt and waves 7 to 10 ft expected.

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

* WHEN...For the Gale Warning, until 6 AM EDT early this 
  morning. For the Small Craft Advisory, until 8 AM EDT Sunday.

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

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

$$

LSZ267-251000-
/O.CON.KMQT.GL.W.0025.000000T0000Z-210925T1000Z/
Lake Superior from Grand Marais MI to Whitefish Point MI 5NM off
shore to the US/Canadian border-
428 AM EDT Sat Sep 25 2021

...GALE WARNING REMAINS IN EFFECT UNTIL 6 AM EDT EARLY THIS
MORNING...

* WHAT...Northwest winds 25 to 30 kt with gusts up to 35 kt and 
  waves 7 to 11 ft occurring.

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

* WHEN...Until 6 AM EDT early this morning.

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

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

$$

LMZ221-248-250-251600-
/O.EXT.KMQT.SC.Y.0114.000000T0000Z-210925T1600Z/
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-
428 AM EDT Sat Sep 25 2021

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

* WHAT...West winds 10 to 15 kt with gusts up to 25 kt and waves 
  1 to 4 ft 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.

&&

$$

LSZ241-251630-
/O.CON.KMQT.SC.Y.0114.000000T0000Z-210926T0300Z/
Black River to Ontonagon MI-
428 AM EDT Sat Sep 25 2021 /328 AM CDT Sat Sep 25 2021/

...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 11 PM EDT /10 PM
CDT/ THIS EVENING...

* WHAT...West winds 15 to 20 kt with gusts up to 25 kt and waves 
  4 to 6 ft occurring.

* WHERE...Black River to Ontonagon MI.

* WHEN...Until 11 PM EDT /10 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.

&&

$$

LSZ242>244-251630-
/O.CON.KMQT.SC.Y.0114.000000T0000Z-210926T0600Z/
Ontonagon to Upper Entrance of Portage Canal MI-
Upper Entrance of Portage Canal to Eagle River MI-
Eagle River to Manitou Island MI-
428 AM EDT Sat Sep 25 2021

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

* WHAT...West winds 15 to 25 kt with gusts up to 30 kt and waves 
  4 to 7 ft occurring.

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

&&

$$

LSZ245>247-251630-
/O.CON.KMQT.SC.Y.0114.000000T0000Z-210926T0300Z/
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-
428 AM EDT Sat Sep 25 2021

...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 11 PM EDT THIS
EVENING...

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

* WHERE...Manitou Island to Point Isabelle MI, Lower Entrance of 
  Portage Canal To Huron Islands MI Including Keweenaw and Huron 
  Bays and Point Isabelle to Lower Entrance of Portage Canal MI.

* WHEN...Until 11 PM EDT 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.

&&

$$

LSZ248-251630-
/O.CON.KMQT.SC.Y.0114.000000T0000Z-210926T0400Z/
Huron Islands to Marquette MI-
428 AM EDT Sat Sep 25 2021

...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL MIDNIGHT EDT
TONIGHT...

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

* WHERE...Huron Islands to Marquette MI.

* WHEN...Until midnight EDT tonight.

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

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

$$

What forecasters said that day

The local office's own words before this gale warning 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 gale warning went out at Sep 24, 1:40 AM EDT, 3 hours 4 minutes earlier.

Area forecast discussion, Sep 24, 1:40 AM EDT, 3 hours 4 minutes before
Area Forecast Discussion
National Weather Service Marquette MI
140 AM EDT Fri Sep 24 2021

.SHORT TERM...(This evening through Friday)
Issued at 356 PM EDT THU SEP 23 2021

As we begin our discussion for the weather setup for today, several
folks will notice the continued cool temperatures for the east half
of the UP, as cloud cover and weak CAA keep the area feeling like
fall. Further to the west, mostly sunny conditions has resulted in
slightly warmer temperatures this afternoon. A look at GOES
satellite imagery shows the upper level low slowly meandering its
way northward over Lower MI toward Lake Huron this afternoon. WV
imagery further supports this as a majority of the east half of the
UP has a very good plume of moisture present. This is bringing a lot
of moisture in the form of steady, persistent rainfall over the far
east portions of the UP. Chilly temperatures in the upper 40s to
near 50 will be the result as this cool air makes its way across the
east half where the more persistent rain bands occur. Visibility and
low cloud cover has been observed thus far as the occluded surface
low wraps the bands of -shra to +shra in a ccw direction this
afternoon. Additionally, breezy winds have been observed due to the
pressure gradient of the surface low to our se, and the surface high
to the west.

Further to the west, an upper level ridge continues to build at the
H5 levels over the Northern CONUS, and the surface high pressure
will assist with dry air remaining present for a majority for the
west half of the UP this afternoon and evening. We can expect
pleasant conditions for the west half as they will have mild
conditions, near seasonal average through sunset for the west half.
For the east half this afternoon and evening, the cloud cover will
continue to build to the west; likely making its way to central UP
before then beginning a retrograding trajectory back toward the east
as the occluded low makes its way out of our cwa. Essentially,
expect the -shra to make it close to the city of Marquette and KSAW,
before its reversal in direction. The precipitation will end in the
east half as the weather system slowly moves toward Ontario/Quebec.

For tonight, the system will continue its trek to the east, and
surface high pressure will move across the cwa. The overnight low
forecast will be slightly difficult to pinpoint with high accuracy
over the interior west. This is due to the next approaching
shortwave from the west that is on the heels of the surface high
pressure. Cloud cover will slowly build between 6Z-12Z Friday
morning over the west half as WAA at 850mb occurs. We will have
cloud cover moving to the east from the departing occluded surface
low, and a narrow window of reduced cloud cover because of the
surface high pressure moving across the area, before another round
of clouds begins to build furthest to the west by morning. Light
winds are anticipated, but due to the higher likelihood of increased
clouds in comparison to last night, we are not anticipating patchy
frost. However, patchy ground fog may be possible as the
temperatures across interior west decrease to the upper 30s to near
40. Most areas should remain in the 40s overnight for lows, with the
exception of areas closest to the lakeshores where minimums near 50
degrees can be expected.

As previously mentioned, another quick-hitting shortwave will move
across the area on Friday. A surface cold front will approach the
cwa from the west. Ahead of this cold FROPA, we will be in the warm
sector of mid-latitude cyclone analysis. WAA at 850mb will assist
with an increase in diurnal maximums for Friday, ahead of the front.
Expect temperatures to be 5-10 degrees warmer for the west half, and
upwards of 10-15 degrees warmer in comparison to the Thursday
afternoon high temperatures. Most areas will see highs in the middle
60s to lower 70s, especially across the south central. The surface
cold FROPA will sweep across the area starting around 18Z Friday for
the west half, and make it through the central portions of the UP by
0Z Saturday. We can expect some -shra as the surface low/FROPA treks
across the central tier of Upper Michigan, deepening as it moves to
the northeast toward Lake Superior by Friday evening. Rainfall
doesn't appear to be much for the developing system in its initial
stages, with most areas seeing up to a tenth of an inch of QPF. We
can also expect for winds to remain elevated, between 10-20mph as
the pressure gradient tightens. Sounding profiles look favorable
for more persistent rain showers as the weather system evolves
into Friday night. Overall, we can expect seasonably cool
temperatures for Thursday, and near to slightly above normal
temperatures for Friday ahead of the approaching cold front.

.LONG TERM...(Friday night through Thursday)
Issued at 336 PM EDT THU SEP 23 2021

Friday night, a Rex block will be established over the western CONUS
into the Canadian Rockies. Downstream of this blocking ridge, a
fairly sharp trough will be swinging through the Upper Midwest and
Upper Great Lakes with an attendant surface cold front. A short wave
will be rounding the base of the trough and then attempting to cut
off from the flow. It never will fully cut off, but it will become
the dominant wave within the trough. Nearly all of the forecast
details for Friday night and Saturday hinge on the evolution of this
wave. Models have been trending stronger with the wave leading to a
stronger surface cyclone along the front in response. If that
happens, enough warmth and moisture could be drawn northward to
generate adequate instability for thunderstorms ahead of the front
rather just plain rain showers, as in the NAM. It would also mean a
more pronounced commahead of rain continuing into Saturday for at
least part of the area (most likely the Keweenaw) as well as more
cold air being drawn down behind the developing low, leading to
cooler highs on Saturday and more lake-effect enhancement to the
rain. For this forecast, have hedged towards the NAM and CAMs
showing a more wound-up system, but not entirely. Therefore, have
included some slight chances of thunder south-central and east
Friday evening and some wrap-around/lake-enhanced POPs over the
Keweenaw and north-central late Friday night into Saturday morning.

Saturday continues to look partly cloudy and breezy as the pressure
gradient remains tight overhead behind the front. There could be
some light scattered lake-effect rain showers and/or diurnal
instability showers, but models have been trending away from that
today so have tempered POPs down a bit from the NBM init.

Sunday and Monday still look somewhat uncertain, though model
solutions are beginning to converge relative to how spread apart
they were yesterday. Late Saturday night into Sunday morning, a
short wave will pass through the WNW flow aloft and may kick off a
few showers. These showers will be followed by some weak to moderate
isentropic lift in the 600-800 mb layer on Sunday as WAA increases
aloft. GEFS and EPS do not have an impressive precip signal, but the
deterministic EC and NAM both advertise showers, which is usually a
reliable model combo. And overall it makes sense that there could be
enough lift with this WAA. Therefore, have introduced chance POPs
for Sunday. As for Monday, it still remains a question whether or
not warm air aloft will continue to surge northward into the area or
whether a reinforcing shot of cold air will drop southward across
the U.P. in response to a short wave rounding the base of a closed
upper low near James Bay. While the deterministic GFS and EC have
gone the cold route, both are outliers to their respective ensemble
systems. Therefore, opted not to make changes to the high temps for
Monday yet. However, if the cooling trend for Monday continues, the
current forecast highs around 70 would likely be too warm by about
10 degrees.

Models and ensembles then return to good agreement by Tuesday in
developing an anomalously strong mid-level ridge over either the
Northern Plains or the Upper Midwest. The variability among the
ensembles is dominated by the speed/placement of the ridge, but
overall the modeling clusters are largely all similar in showing the
500 mb ridge axis somewhere over North Dakota or Minnesota. This
would leave the U.P. with warm and dry conditions for the middle of
next week. The GEFS and EPS mean both show 850 mb temps near the
90th percentile of climatology for Tuesday through the end of the
week. Highs should be around 70 or in the low 70s each day.
&&

.AVIATION...(For the 06Z TAFS through 06Z Friday night)
Issued at 139 AM EDT FRI SEP 24 2021

Generally VFR conditions are expected at all terminals at least into
this morning, although there will be a period of MVFR cigs at
KSAW to start the period with wraparound moisture from low
pressure near Lake Huron. There could be a trend toward MVFR cigs
at KIWD and KCMX as rain moves in along a cold front later this
afternoon, although the better chance for MVFR conditions and the
steadier rain will likely be at KSAW closer to 00Z. Could be some
slightly gusty northwest winds behind the front at all the
terminals.
&&

.MARINE...(For the 4 PM Lake Superior forecast issuance)
Issued at 339 PM EDT THU SEP 23 2021

Surface low pressure will slowly be moving northward across Lake
Huron today, resulting in northeast winds for the east half of Lake
Superior of 25-30 knots through this evening. Winds should be less
than 20 knots for the west half of Lake Superior the remainder of
today. On Friday, another trough is expected to approach the lake.
Westerly winds from 20-25 knots can be expected through late Friday
evening across the west and central portions of the lake. These
winds will increase late Friday night into early Saturday morning
behind a cold front. Models show the potential for a brief NW gale
early Saturday morning, perhaps even over 40 kts, but only for
about 1-3 hours. However, models have struggled to resolve the
system with any consistency. Therefore, have included low-end
gales in the forecast but opted not to issue a Gale Watch owing to
low confidence. However, a Watch may be needed in future forecast
packages.

The winds should then subside slightly to 25-30 knots for a
majority of Saturday, before falling back down below 20 knots on
Sunday. Lighter winds below 20 knots will continue to be expected
the rest of the forecast period.
&&

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

SHORT TERM...BW
LONG TERM...RJC
AVIATION...Voss
MARINE...BW/RJC
Hazardous weather outlook, Sep 23, 3:47 PM EDT, 12 hours 57 minutes before
Hazardous Weather Outlook
National Weather Service Marquette MI
347 PM EDT Thu Sep 23 2021

MIZ001>007-009>014-084-085-242000-
Keweenaw-Ontonagon-Northern Houghton-Baraga-Marquette-Alger-Luce-
Gogebic-Iron-Dickinson-Menominee-Delta-Southern Schoolcraft-
Southern Houghton-Northern Schoolcraft-
347 PM EDT Thu Sep 23 2021 /247 PM CDT Thu Sep 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...Friday through Wednesday

A moderate swim risk is possible late Friday afternoon for the
Lake Michigan beaches of Schoolcraft County.

There is a slight chance of thunderstorms Friday night over south
central and eastern Upper Michigan.

.SPOTTER INFORMATION STATEMENT...

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

LSZ162-240>251-263>267-242000-
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-
347 PM EDT Thu Sep 23 2021 /247 PM CDT Thu Sep 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...Friday through Wednesday

A brief period of northwest gales is possible Friday night into
Saturday morning over north central and eastern Lake Superior.

.SPOTTER INFORMATION STATEMENT...

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

LMZ221-248-250-242000-
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-
347 PM EDT Thu Sep 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...Friday through Wednesday

There is a slight chance of thunderstorms Friday evening.

.SPOTTER INFORMATION STATEMENT...

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

RJC

The office that day

Everything else NWS Marquette, MI issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Sep 24, 4:44 AM EDTSmall Craft AdvisoryMQT54 hr

Nearby

Gale Warnings in Michigan, 2021Every gale warning 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.