Small Craft Advisory 84, NWS Chicago, IL

000 
WHUS73 KLOT 271448
MWWLOT

URGENT - MARINE WEATHER MESSAGE
National Weather Service Chicago IL
948 AM CDT Wed Oct 27 2021

LMZ740-272300-
/O.CON.KLOT.SC.Y.0084.211028T0200Z-211031T0000Z/
Winthrop Harbor to Wilmette Harbor IL-
948 AM CDT Wed Oct 27 2021

...SMALL CRAFT ADVISORY REMAINS IN EFFECT FROM 9 PM THIS EVENING
TO 7 PM CDT SATURDAY...

* WHAT...Southeast winds to 25 kt becoming northeast Thursday 
  night. Waves to 7 feet, occasionally to 9 ft. 

* WHERE...Winthrop Harbor to Wilmette Harbor IL.

* WHEN...From 9 PM this evening to 7 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.

&&

$$

342 
WHUS73 KLOT 272008
MWWLOT

URGENT - MARINE WEATHER MESSAGE
National Weather Service Chicago IL
308 PM CDT Wed Oct 27 2021

LMZ741-742-280415-
/O.EXA.KLOT.SC.Y.0084.211028T0200Z-211031T0000Z/
Wilmette Harbor to Northerly Island IL-
Northerly Island to Calumet Harbor IL-
308 PM CDT Wed Oct 27 2021

...SMALL CRAFT ADVISORY IN EFFECT FROM 9 PM THIS EVENING TO 7 PM
CDT SATURDAY...

* WHAT...East southeast winds to 20 kt tonight and Thursday, then
  east northeast winds to 30 kt Thursday night and Friday. Waves
  to 7 ft tonight and Thursday, building to 10 ft Friday.

* WHERE...Wilmette Harbor to Northerly Island IL and Northerly 
  Island to Calumet Harbor IL.

* WHEN...From 9 PM this evening to 7 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.

&&

$$

LMZ740-280415-
/O.CON.KLOT.SC.Y.0084.211028T0200Z-211031T0000Z/
Winthrop Harbor to Wilmette Harbor IL-
308 PM CDT Wed Oct 27 2021

...SMALL CRAFT ADVISORY REMAINS IN EFFECT FROM 9 PM THIS EVENING
TO 7 PM CDT SATURDAY...

* WHAT...East southeast winds to 20 kt tonight and Thursday, then
  east northeast winds to 30 kt Thursday night and Friday. Waves
  to 7 ft tonight and Thursday, building to 10 ft Friday.

* WHERE...Winthrop Harbor to Wilmette Harbor IL.

* WHEN...From 9 PM this evening to 7 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.

&&

$$

570 
WHUS73 KLOT 280244
MWWLOT

URGENT - MARINE WEATHER MESSAGE
National Weather Service Chicago IL
944 PM CDT Wed Oct 27 2021

LMZ740>742-281045-
/O.CON.KLOT.SC.Y.0084.000000T0000Z-211031T0000Z/
Winthrop Harbor to Wilmette Harbor IL-
Wilmette Harbor to Northerly Island IL-
Northerly Island to Calumet Harbor IL-
944 PM CDT Wed Oct 27 2021

...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 7 PM CDT
SATURDAY...

* WHAT...Northeast winds 15 to 25 kt and waves 4 to 7 ft through 
  Thursday night. Waves building to 7 to 10 ft by Friday as 
  northeast winds increase to 30 kt.

* WHERE...Illinois waters from Winthrop Harbor to Calumet Harbor.

* WHEN...Until 7 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.

&&

$$

Lenning

224 
WHUS73 KLOT 280852
MWWLOT

URGENT - MARINE WEATHER MESSAGE
National Weather Service Chicago IL
352 AM CDT Thu Oct 28 2021

LMZ743>745-281700-
/O.EXB.KLOT.SC.Y.0084.211029T0600Z-211031T0000Z/
Calumet Harbor IL to Gary IN-Gary to Burns Harbor IN-
Burns Harbor to Michigan City IN-
352 AM CDT Thu Oct 28 2021

...SMALL CRAFT ADVISORY IN EFFECT FROM 1 AM FRIDAY TO 7 PM CDT
SATURDAY...

* WHAT...Northeast winds to 25 kt tonight increasing to 30 kt on 
  Friday. Significant waves to 6 ft tonight increasing to 9 ft on 
  Friday.

* WHERE...Calumet Harbor IL to Gary IN, Gary to Burns Harbor IN 
  and Burns Harbor to Michigan City IN.

* WHEN...From 1 AM Friday to 7 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.

&&

$$

LMZ740>742-281700-
/O.CON.KLOT.SC.Y.0084.000000T0000Z-211031T0000Z/
Winthrop Harbor to Wilmette Harbor IL-
Wilmette Harbor to Northerly Island IL-
Northerly Island to Calumet Harbor IL-
352 AM CDT Thu Oct 28 2021

...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 7 PM CDT
SATURDAY...

* WHAT...East winds to 25 kt today becoming northeast and
  increasing to 30 kt on Friday. Significant waves to 6 ft today
  building to 10 ft on Friday.

* WHERE...Northerly Island to Calumet Harbor IL, Winthrop Harbor 
  to Wilmette Harbor IL and Wilmette Harbor to Northerly Island 
  IL.

* WHEN...Until 7 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.

&&

$$

590 
WHUS73 KLOT 281504
MWWLOT

URGENT - MARINE WEATHER MESSAGE
National Weather Service Chicago IL
1004 AM CDT Thu Oct 28 2021

LMZ740>742-282315-
/O.CON.KLOT.SC.Y.0084.000000T0000Z-211031T0000Z/
Winthrop Harbor to Wilmette Harbor IL-
Wilmette Harbor to Northerly Island IL-
Northerly Island to Calumet Harbor IL-
1004 AM CDT Thu Oct 28 2021

...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 7 PM CDT
SATURDAY...

* WHAT...Northeast winds 15 to 25 kt with gusts up to 30 kt.
  Significant waves to 8 ft today increasing to 13 ft on Friday.

* WHERE...Northerly Island to Calumet Harbor IL, Winthrop Harbor 
  to Wilmette Harbor IL and Wilmette Harbor to Northerly Island 
  IL.

* WHEN...Until 7 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.

&&

$$

LMZ743>745-282315-
/O.CON.KLOT.SC.Y.0084.211029T0600Z-211031T0000Z/
Calumet Harbor IL to Gary IN-Gary to Burns Harbor IN-
Burns Harbor to Michigan City IN-
1004 AM CDT Thu Oct 28 2021

...SMALL CRAFT ADVISORY REMAINS IN EFFECT FROM 1 AM FRIDAY TO
7 PM CDT SATURDAY...

* WHAT...Northeast winds to 25 kt with gusts up to 30 kt.
  Significant waves to 8 ft tonight building to 12 ft on Friday.

* WHERE...Gary to Burns Harbor IN, Burns Harbor to Michigan City 
  IN and Calumet Harbor IL to Gary IN.

* WHEN...From 1 AM Friday to 7 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.

&&

$$

173 
WHUS73 KLOT 282044
MWWLOT

URGENT - MARINE WEATHER MESSAGE
National Weather Service Chicago IL
344 PM CDT Thu Oct 28 2021

LMZ740>742-290445-
/O.CON.KLOT.SC.Y.0084.000000T0000Z-211031T0000Z/
Winthrop Harbor to Wilmette Harbor IL-
Wilmette Harbor to Northerly Island IL-
Northerly Island to Calumet Harbor IL-
344 PM CDT Thu Oct 28 2021

...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 7 PM CDT
SATURDAY...

* WHAT...Northeast winds to 30 kt with occasional gale force
  gusts. Waves to 11 ft occasionally to 14 ft.

* WHERE...Northerly Island to Calumet Harbor IL, Winthrop Harbor 
  to Wilmette Harbor IL and Wilmette Harbor to Northerly Island 
  IL.

* WHEN...Until 7 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.

&&

$$

LMZ743>745-290445-
/O.CON.KLOT.SC.Y.0084.211029T0600Z-211031T0000Z/
Calumet Harbor IL to Gary IN-Gary to Burns Harbor IN-
Burns Harbor to Michigan City IN-
344 PM CDT Thu Oct 28 2021

...SMALL CRAFT ADVISORY REMAINS IN EFFECT FROM 1 AM FRIDAY TO
7 PM CDT SATURDAY...

* WHAT...Northeast to north winds to 30 kt. Waves to 9 ft 
  occasionally to 11 ft.

* WHERE...Gary to Burns Harbor IN, Burns Harbor to Michigan City 
  IN and Calumet Harbor IL to Gary IN.

* WHEN...From 1 AM Friday to 7 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.

&&

$$

848 
WHUS73 KLOT 290254
MWWLOT

URGENT - MARINE WEATHER MESSAGE
National Weather Service Chicago IL
954 PM CDT Thu Oct 28 2021

LMZ740>742-291100-
/O.EXT.KLOT.SC.Y.0084.000000T0000Z-211029T1400Z/
/O.NEW.KLOT.GL.W.0016.211029T1400Z-211030T0900Z/
/O.NEW.KLOT.SC.Y.0085.211030T0900Z-211031T0000Z/
Winthrop Harbor to Wilmette Harbor IL-
Wilmette Harbor to Northerly Island IL-
Northerly Island to Calumet Harbor IL-
954 PM CDT Thu Oct 28 2021

...SMALL CRAFT ADVISORY NOW IN EFFECT UNTIL 9 AM CDT FRIDAY...
...GALE WARNING IN EFFECT FROM 9 AM FRIDAY TO 4 AM CDT SATURDAY...
...SMALL CRAFT ADVISORY IN EFFECT FROM 4 AM TO 7 PM CDT
SATURDAY...

* WHAT...For the Gale Warning, northeast gales to 35 kt,
  significant waves up to 11 ft, and occasional waves up to 14 ft.
  For the Small Craft Advisories, north-northeast winds up to 25
  to 30 kt, significant waves up to 9 ft, and occasional waves up
  to 12 ft.

* WHERE...Winthrop Harbor to Wilmette Harbor IL, Wilmette Harbor 
  to Northerly Island IL and Northerly Island to Calumet Harbor 
  IL.

* WHEN...For the Gale Warning, from 9 AM Friday to 4 AM CDT 
  Saturday. For the Small Craft Advisory, until 9 AM CDT Friday. 
  For the Small Craft Advisory, from 4 AM to 7 PM CDT 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.

&&

$$

LMZ743-744-291100-
/O.EXT.KLOT.SC.Y.0084.211029T0600Z-211029T2000Z/
/O.NEW.KLOT.GL.W.0016.211029T2000Z-211030T0900Z/
/O.NEW.KLOT.SC.Y.0085.211030T0900Z-211031T0000Z/
Calumet Harbor IL to Gary IN-Gary to Burns Harbor IN-
954 PM CDT Thu Oct 28 2021

...SMALL CRAFT ADVISORY NOW IN EFFECT FROM 1 AM TO 3 PM CDT
FRIDAY...
...GALE WARNING IN EFFECT FROM 3 PM FRIDAY TO 4 AM CDT SATURDAY...
...SMALL CRAFT ADVISORY IN EFFECT FROM 4 AM TO 7 PM CDT
SATURDAY...

* WHAT...For the Gale Warning, northeast gales to 35 kt,
  significant waves up to 10 ft, and occasional waves up to 13 ft.
  For Small Craft Advisories, north-northeast winds to 25 to 30
  kt, significant waves up to 9 ft, and occasional waves up to 12
  ft. 

* WHERE...Calumet Harbor IL to Gary IN and Gary to Burns Harbor 
  IN.

* WHEN...For the Gale Warning, from 3 PM Friday to 4 AM CDT 
  Saturday. For the Small Craft Advisory, from 1 AM to 3 PM CDT 
  Friday. For the Small Craft Advisory, from 4 AM to 7 PM CDT 
  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.

&&

$$

LMZ745-291100-
/O.CON.KLOT.SC.Y.0084.211029T0600Z-211031T0000Z/
Burns Harbor to Michigan City IN-
954 PM CDT Thu Oct 28 2021

...SMALL CRAFT ADVISORY REMAINS IN EFFECT FROM 1 AM FRIDAY TO
7 PM CDT SATURDAY...

* WHAT...North northeast winds to 25 to 30 kt with gusts to 35 kt
  gales possible, significant waves up to 9 ft, and occasional
  waves up to 12 ft.

* WHERE...Burns Harbor to Michigan City IN.

* WHEN...From 1 AM Friday to 7 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.

&&

$$

328 
WHUS73 KLOT 290845
MWWLOT

URGENT - MARINE WEATHER MESSAGE
National Weather Service Chicago IL
345 AM CDT Fri Oct 29 2021

LMZ740>742-291645-
/O.CON.KLOT.SC.Y.0084.000000T0000Z-211029T1400Z/
/O.CON.KLOT.GL.W.0016.211029T1400Z-211030T0900Z/
/O.CON.KLOT.SC.Y.0085.211030T0900Z-211031T0000Z/
Winthrop Harbor to Wilmette Harbor IL-
Wilmette Harbor to Northerly Island IL-
Northerly Island to Calumet Harbor IL-
345 AM CDT Fri Oct 29 2021

...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 9 AM CDT THIS
MORNING...
...GALE WARNING REMAINS IN EFFECT FROM 9 AM THIS MORNING TO 4 AM
CDT SATURDAY...
...SMALL CRAFT ADVISORY REMAINS IN EFFECT FROM 4 AM TO 7 PM CDT
SATURDAY...

* WHAT...For the Gale Warning, north-northeast gales to 35 kt,
  significant waves up to 12 ft, and occasional waves up to 15 
  ft. For the Small Craft Advisories, north-northeast winds up to 
  25 to 30 kt, significant waves up to 9 ft, and occasional waves 
  up to 12 ft.

* WHERE...Winthrop Harbor to Calumet Harbor IL.

* WHEN...For the initial Small Craft Advisory, until 9 AM CDT this
  morning. For the Gale Warning, from 9 AM this morning to 4 AM
  CDT Saturday. For the proceeding Small Craft Advisory, from 4 
  AM to 7 PM CDT 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.

&&

$$

LMZ743-744-291645-
/O.CON.KLOT.SC.Y.0084.000000T0000Z-211029T2000Z/
/O.CON.KLOT.GL.W.0016.211029T2000Z-211030T0900Z/
/O.CON.KLOT.SC.Y.0085.211030T0900Z-211031T0000Z/
Calumet Harbor IL to Gary IN-Gary to Burns Harbor IN-
345 AM CDT Fri Oct 29 2021

...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 3 PM CDT THIS
AFTERNOON...
...GALE WARNING REMAINS IN EFFECT FROM 3 PM THIS AFTERNOON TO
4 AM CDT SATURDAY...
...SMALL CRAFT ADVISORY REMAINS IN EFFECT FROM 4 AM TO 7 PM CDT
SATURDAY...

* WHAT...For the Gale Warning, northeast gales to 35 kt, 
  significant waves up to 10 ft, and occasional waves up to 13 
  ft. For Small Craft Advisories, north-northeast winds to 25 to 
  30 kt, significant waves up to 9 ft, and occasional waves up 
  to 12 ft.

* WHERE...Calumet Harbor IL to Burns Harbor IN.

* WHEN...For the initial Small Craft Advisory, until 3 PM CDT this
  afternoon. For the Gale Warning, from 3 PM this afternoon to 4
  AM CDT Saturday. For the proceeding Small Craft Advisory, from 
  4 AM to 7 PM CDT 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.

&&

$$

LMZ745-291645-
/O.CON.KLOT.SC.Y.0084.000000T0000Z-211031T0000Z/
Burns Harbor to Michigan City IN-
345 AM CDT Fri Oct 29 2021

...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 7 PM CDT
SATURDAY...

* WHAT...North northeast winds to 25 to 30 kt with gusts to 35 
  kt gales possible, significant waves up to 9 ft, and 
  occasional waves up to 12 ft.

* WHERE...Burns Harbor to Michigan City IN.

* WHEN...Until 7 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.

&&

$$

541 
WHUS73 KLOT 291505
MWWLOT

URGENT - MARINE WEATHER MESSAGE
National Weather Service Chicago IL
1005 AM CDT Fri Oct 29 2021

LMZ743-744-292315-
/O.CON.KLOT.SC.Y.0084.000000T0000Z-211029T2000Z/
/O.CON.KLOT.GL.W.0016.211029T2000Z-211030T0900Z/
/O.CON.KLOT.SC.Y.0085.211030T0900Z-211031T0000Z/
Calumet Harbor IL to Gary IN-Gary to Burns Harbor IN-
1005 AM CDT Fri Oct 29 2021

...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 3 PM CDT THIS
AFTERNOON...

...GALE WARNING REMAINS IN EFFECT FROM 3 PM THIS AFTERNOON TO
4 AM CDT SATURDAY...

...SMALL CRAFT ADVISORY REMAINS IN EFFECT FROM 4 AM TO 7 PM CDT
SATURDAY...

* WHAT...For the Gale Warning, north-northeast gales to 35 kt, 
  significant waves up to 10 ft, and occasional waves up to 13 
  ft. For Small Craft Advisories, north-northeast winds to 25 to 
  30 kt, significant waves up to 9 ft, and occasional waves up 
  to 12 ft.

* WHERE...Calumet Harbor IL to Burns Harbor IN.

* WHEN...For the initial Small Craft Advisory, until 3 PM CDT 
  this afternoon. For the Gale Warning, from 3 PM this afternoon 
  to 4 AM CDT Saturday. For the proceeding Small Craft Advisory, 
  from 4 AM to 7 PM CDT 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.

&&

$$

LMZ740>742-292315-
/O.CON.KLOT.GL.W.0016.000000T0000Z-211030T0900Z/
/O.CON.KLOT.SC.Y.0085.211030T0900Z-211031T0000Z/
Winthrop Harbor to Wilmette Harbor IL-
Wilmette Harbor to Northerly Island IL-
Northerly Island to Calumet Harbor IL-
1005 AM CDT Fri Oct 29 2021

...GALE WARNING REMAINS IN EFFECT UNTIL 4 AM CDT SATURDAY...

...SMALL CRAFT ADVISORY REMAINS IN EFFECT FROM 4 AM TO 7 PM CDT
SATURDAY...

* WHAT...For the Gale Warning, north-northeast gales to 35 kt, 
  significant waves up to 12 ft, and occasional waves up to 15 
  ft. For the Small Craft Advisories, north-northeast winds up 
  to 25 to 30 kt, significant waves up to 9 ft, and occasional 
  waves up to 12 ft.

* WHERE...Winthrop Harbor to Calumet Harbor IL.

* WHEN...For the initial Small Craft Advisory, until 9 AM CDT 
  this morning. For the Gale Warning, from 9 AM this morning to 
  4 AM CDT Saturday. For the proceeding Small Craft Advisory, 
  from 4 AM to 7 PM CDT 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.

&&

$$

LMZ745-292315-
/O.CON.KLOT.SC.Y.0084.000000T0000Z-211031T0000Z/
Burns Harbor to Michigan City IN-
1005 AM CDT Fri Oct 29 2021

...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 7 PM CDT
SATURDAY...

* WHAT...North northeast winds to 25 to 30 kt with gusts to 35 
  kt gales possible, significant waves up to 9 ft, and 
  occasional waves up to 12 ft.

* WHERE...Burns Harbor to Michigan City IN.

* WHEN...Until 7 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.

&&

$$

197 
WHUS73 KLOT 292035
MWWLOT

URGENT - MARINE WEATHER MESSAGE
National Weather Service Chicago IL
335 PM CDT Fri Oct 29 2021

LMZ740>742-300445-
/O.CON.KLOT.GL.W.0016.000000T0000Z-211030T0900Z/
/O.CON.KLOT.SC.Y.0085.211030T0900Z-211031T0000Z/
Winthrop Harbor to Wilmette Harbor IL-
Wilmette Harbor to Northerly Island IL-
Northerly Island to Calumet Harbor IL-
335 PM CDT Fri Oct 29 2021

...GALE WARNING REMAINS IN EFFECT UNTIL 4 AM CDT SATURDAY...

...SMALL CRAFT ADVISORY REMAINS IN EFFECT FROM 4 AM TO 7 PM CDT
SATURDAY...

* WHAT...For the Gale Warning, north to northeast gales to 35 kt,
  significant waves to 12 ft, and occasional waves to 15 ft. For
  the Small Craft Advisory, north to northeast winds to 30 kt,
  significant waves up to 10 ft, and occasional waves to 13 ft.

* WHERE...Winthrop Harbor to Calumet Harbor IL.

* WHEN...For the Gale Warning, until 4 AM CDT Saturday. For the 
  Small Craft Advisory, from 4 AM to 7 PM CDT 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.

&&

$$

LMZ743-744-300445-
/O.CON.KLOT.GL.W.0016.000000T0000Z-211030T0900Z/
/O.CON.KLOT.SC.Y.0085.211030T0900Z-211031T0000Z/
Calumet Harbor IL to Gary IN-Gary to Burns Harbor IN-
335 PM CDT Fri Oct 29 2021

...GALE WARNING REMAINS IN EFFECT UNTIL 4 AM CDT SATURDAY...

...SMALL CRAFT ADVISORY REMAINS IN EFFECT FROM 4 AM TO 7 PM CDT
SATURDAY...

* WHAT...For the Gale Warning, north to northeast gales to 35 kt,
  significant waves up to 10 ft, and occasional waves to 13 ft.
  For Small Craft Advisory, north to northeast winds to 30 kt,
  significant waves up to 9 ft, and occasional waves to 12 ft.

* WHERE...Calumet Harbor IL to Burns Harbor IN.

* WHEN...For the Gale Warning, until 4 AM CDT Saturday. For the 
  Small Craft Advisory, from 4 AM to 7 PM CDT 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.

&&

$$

LMZ745-300445-
/O.CON.KLOT.SC.Y.0084.000000T0000Z-211031T0000Z/
Burns Harbor to Michigan City IN-
335 PM CDT Fri Oct 29 2021

...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 7 PM CDT
SATURDAY...

* WHAT...North to northeast winds to 30 kt with occasional gale
  force gusts to 35 kt gales possible, significant waves to 10 ft,
  and occasional waves to 13 ft.

* WHERE...Burns Harbor to Michigan City IN.

* WHEN...Until 7 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.

&&

$$

275 
WHUS73 KLOT 300203
MWWLOT

URGENT - MARINE WEATHER MESSAGE
National Weather Service Chicago IL
903 PM CDT Fri Oct 29 2021

LMZ745-301015-
/O.UPG.KLOT.SC.Y.0084.000000T0000Z-211031T0000Z/
/O.EXA.KLOT.GL.W.0016.000000T0000Z-211030T0900Z/
/O.EXA.KLOT.SC.Y.0085.211030T0900Z-211031T0000Z/
Burns Harbor to Michigan City IN-
903 PM CDT Fri Oct 29 2021

...GALE WARNING IN EFFECT UNTIL 4 AM CDT SATURDAY...
...SMALL CRAFT ADVISORY IN EFFECT FROM 4 AM TO 7 PM CDT
SATURDAY...

* WHAT...For the Gale Warning, northeast gales to 35 kt.
  Significant waves to 10 ft. Occasional waves to 13 ft. For the
  Small Craft Advisory, north winds to 30 kt. Significant waves to
  9 ft. Occasional waves to 12 ft.

* WHERE...Burns Harbor to Michigan City IN.

* WHEN...For the Gale Warning, until 4 AM CDT Saturday. For the 
  Small Craft Advisory, from 4 AM to 7 PM CDT 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.

&&

$$

LMZ740>742-301015-
/O.CON.KLOT.GL.W.0016.000000T0000Z-211030T0900Z/
/O.CON.KLOT.SC.Y.0085.211030T0900Z-211031T0000Z/
Winthrop Harbor to Wilmette Harbor IL-
Wilmette Harbor to Northerly Island IL-
Northerly Island to Calumet Harbor IL-
903 PM CDT Fri Oct 29 2021

...GALE WARNING REMAINS IN EFFECT UNTIL 4 AM CDT SATURDAY...
...SMALL CRAFT ADVISORY REMAINS IN EFFECT FROM 4 AM TO 7 PM CDT
SATURDAY...

* WHAT...For the Gale Warning, north gales to 35 kt. Significant
  waves to 12 ft. Occasional waves to 16 ft. For the Small Craft
  Advisory, north winds to 30 kt. Significant waves to 10 ft.
  Occasional waves to 13 ft.

* WHERE...Northerly Island to Calumet Harbor IL, Winthrop Harbor 
  to Wilmette Harbor IL and Wilmette Harbor to Northerly Island 
  IL.

* WHEN...For the Gale Warning, until 4 AM CDT Saturday. For the 
  Small Craft Advisory, from 4 AM to 7 PM CDT 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.

&&

$$

LMZ743-744-301015-
/O.CON.KLOT.GL.W.0016.000000T0000Z-211030T0900Z/
/O.CON.KLOT.SC.Y.0085.211030T0900Z-211031T0000Z/
Calumet Harbor IL to Gary IN-Gary to Burns Harbor IN-
903 PM CDT Fri Oct 29 2021

...GALE WARNING REMAINS IN EFFECT UNTIL 4 AM CDT SATURDAY...
...SMALL CRAFT ADVISORY REMAINS IN EFFECT FROM 4 AM TO 7 PM CDT
SATURDAY...

* WHAT...For the Gale Warning, northeast gales to 35 kt.
  Significant waves to 10 ft. Occasional waves to 13 ft. For the
  Small Craft Advisory, north winds to 30 kt. Significant waves to
  9 ft. Occasional waves to 12 ft.

* WHERE...Gary to Burns Harbor IN and Calumet Harbor IL to Gary 
  IN.

* WHEN...For the Gale Warning, until 4 AM CDT Saturday. For the 
  Small Craft Advisory, from 4 AM to 7 PM CDT 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.

&&

$$

Area Forecast Discussion
National Weather Service Chicago/Romeoville, IL
326 AM CDT Wed Oct 27 2021

.SHORT TERM...
325 AM CDT

Through Wednesday night...

The clear skies overhead have cooled temperatures across the area
into the middle and upper 30's early this morning resulting in some
patchy frost, particularly in parts of NW Indiana. The clear skies,
with some help from very light winds and dewpoints too in the middle
and upper 30's, have also spawned an area of fog focused over NW
Indiana and reaching into parts of Will, Kankakee, and Iroquois
Counties. The frost and fog will last through daybreak and shortly
thereafter. Winds this morning will be light and variable before
increasing to 5-10 mph out of the southeast this afternoon with
gusts upwards of 15 mph. No rain is expected through the day,
although clouds will build from the southwest through the day
leaving most of the area with a partly cloudy Wednesday though
western and southwestern portions of the CWA may thicken up to
mostly cloudy a bit later in the day. Cloudy skies are anticipated
over the entire area by late this evening. Winds will back to
easterly late tonight while maintaining gusts as high as 15 mph and
possibly up to 20 mph right along the lake. Slight rain chances will
move over the southwestern half of the CWA overnight tonight as a
storm system approaches and is set to bring us another rainy day on
Thursday.

Doom

&&

.LONG TERM...
309 AM CDT

Thursday night through Tuesday...

Thursday and Friday continue to look cloudy and wet as a closed
upper-level wave and associated surface low pressure system
meander northward through the Ohio River Valley. Showers will
first spread from south to north across our area on Thursday,
though there may be more virga than actual rain through mid-
morning given a stout wedge of dry mid-level air. With time, top-
down saturation with a little help from a low-level cloud deck
generated by the unstable waters of Lake Michigan (e.g. "seeder
feeder" mechanism) will allow for rain to become widespread by the
noon hour. On-and-off rain showers will then continue into Friday
mixed between pockets of low clouds, mist, and drizzle. Shower
coverage should gradually wane from west to east Friday night,
with the highest coverage expected to be near Lake Michigan by
early Saturday morning. It appears all areas should be dry toward
daybreak Saturday.

With the storm system more or less closed-off, moisture will be far
less plentiful compared to the previous fall storm. As a result,
rain rates Thursday and Friday will be on the "light" side --
generally a tenth or two of an inch every 6 hours.  However,
seasonably cool 850 mb temperatures, the relatively warm waters of
Lake Michigan, and favorable northeasterly low-level flow will
allow for "enhancement" to precipitation rates particularity
across Lake (IL), DuPage, Cook, and northern Will counties pretty
much through the entire duration of the storm. By the time rain
tapers Saturday morning, total rainfall amounts should tally somewhere
between one half and three quarters of an inch areawide, with
perhaps a smidge less near Rockford and closer to an inch along
the Illinois shoreline of Lake Michigan. Temperatures Thursday
through Friday will be steady and in the lower 50s (we wouldn't be
surprised if the official high and low at Chicago O'Hare are
within 2 or 3 degrees on Friday). Finally, increasingly blustery
winds, particularity on Friday, will add a nice touch altogether
making for a cloudy, wet, blustery, and seasonably cool end to the
workweek.

Aside from a cloudy start to Saturday, the upcoming weekend looks
pleasant with highs in the upper 60s and light winds. Ensemble model
guidance continues to advertise a slide downward in temperatures
next week as an upper-level wave dives south across the northern
United States. Ensemble 850 mb median temperatures of -5 to 0C
support highs in the 40s and lows in the mid 30s from Monday
onward.

Borchardt

&&

.AVIATION...
For the 06Z TAFs...

There are no aviation concerns through the TAF period.

With a surface ridge directly overhead, winds will remain light if
not calm at all terminals through daybreak. At ORD/MDW/GYY, would
not be surprised if winds try to adopt a component toward Lake
Michigan before daybreak as a land breeze develops, but
confidence in such a scenario is far too low to include in the
outgoing TAF package. Additionally, a few pockets of clouds based
near 2500 may float over the Chicago terminals before daybreak as
a modest "cool pocket" advects over Lake Michigan.

After daybreak,generally southeasterly winds aob 12 kt will
prevail though a few gusts of 14-17kt may occur at RFD this
afternoon where a modest low-level pressure gradient will be in
place. Upper-level clouds will gradually increase in coverage as
the TAF period progresses.

Toward the very end of the 30-hour TAF window at ORD/MDW, MVFR
cigs may attempt to develop off Lake Michigan as low-level flow
and moisture increases ahead of the next weather-maker. For now,
will advertised a SCT020 deck toward daybreak Thursday and provide
a closer look with the 12Z forecast package.

Borchardt

&&

.LOT WATCHES/WARNINGS/ADVISORIES...
IL...None.
IN...Frost Advisory...INZ001-INZ002-INZ010-INZ011-INZ019 until 9 AM
     Wednesday.

LM...Small Craft Advisory...LMZ740...9 PM Wednesday to 7 PM
     Saturday.

&&

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Hazardous Weather Outlook
National Weather Service Chicago/Romeoville IL
311 PM CDT Tue Oct 26 2021

ILZ003>006-008-010>013-019>021-023-032-033-039-103>108-INZ001-002-
010-011-019-272015-
Winnebago-Boone-McHenry-Lake IL-Ogle-Lee-De Kalb-Kane-DuPage-
La Salle-Kendall-Grundy-Kankakee-Livingston-Iroquois-Ford-
Northern Cook-Central Cook-Southern Cook-Northern Will-
Southern Will-Eastern Will-Lake IN-Porter-Newton-Jasper-Benton-
311 PM CDT Tue Oct 26 2021 /411 PM EDT Tue Oct 26 2021/

This Hazardous Weather Outlook is for portions of North Central
Illinois...Northeast Illinois and Northwest Indiana.

.DAY ONE...Tonight.

Weather hazards expected...

  Elevated Frost Risk in northwest Indiana.

DISCUSSION...

Areas of frost are likely late tonight, mainly over northwestern
Indiana.

.DAYS TWO THROUGH SEVEN...Wednesday through Monday.

Wednesday...
 Elevated AM Frost Risk in northwest Indiana.

.SPOTTER INFORMATION STATEMENT...

  Spotter activation will not be necessary through tonight.

LMZ740>745-272015-
Winthrop Harbor to Wilmette Harbor IL-
Wilmette Harbor to Northerly Island IL-
Northerly Island to Calumet Harbor IL-
Calumet Harbor IL to Gary IN-Gary to Burns Harbor IN-
Burns Harbor to Michigan City IN-
311 PM CDT Tue Oct 26 2021

This Hazardous Weather Outlook is for portions of the Illinois
nearshore waters of Lake Michigan and the Indiana nearshore
waters of Lake Michigan.

.DAY ONE...Tonight.

Weather hazards expected...

  Hazardous conditions for small craft through early evening.

.DAYS TWO THROUGH SEVEN...Wednesday through Monday.

Thursday through Saturday...
  Hazardous conditions for small craft are likely.

KJB

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