Gale Warning 21, NWS Milwaukee, WI

302 
WHUS73 KMKX 201411
MWWMKX

URGENT - MARINE WEATHER MESSAGE
National Weather Service Milwaukee/Sullivan WI
911 AM CDT Mon Apr 20 2020

LMZ261-362-364-366-563-565-202215-
/O.EXT.KMKX.GL.W.0021.200420T1411Z-200421T1800Z/
Lake Michigan from Seul Choix Point to Rock Island Passage 5NM
offshore to Mid Lake-
Lake Michigan South of a line from Seul Choix Point to the
Mackinac Bridge and North of a line from Charlevoix MI to South
Fox Island 5NM offshore-
Lake Michigan from Charlevoix to Point Betsie MI 5NM Offshore to
mid lake-
Lake Michigan from Point Betsie to Manistee MI 5NM offshore to
Mid Lake-
Lake Michigan from Rock Island Passage to Sturgeon Bay WI 5NM
offshore to mid lake-
Lake Michigan from Sturgeon Bay to Two Rivers WI 5NM offshore to
Mid Lake-
911 AM CDT Mon Apr 20 2020

...GALE WARNING NOW IN EFFECT UNTIL 1 PM CDT TUESDAY...

* WHAT...South to southwest gales to 35 knots today becoming
  Northwest winds 20 to 25 kt with gales to 40 kt later tonight.
  Waves building to 5 to 8 feet.

* WHERE...Northern Third of the Open Waters of Lake Michigan, 
  Lake Michigan from Point Betsie to Manistee MI 5NM offshore to 
  Mid Lake, and Lake Michigan from Sturgeon Bay to Two Rivers WI 
  5NM offshore to Mid Lake.

* WHEN...Until 1 PM CDT Tuesday.

* 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.

&&

$$

LMZ643>646-202215-
/O.CON.KMKX.SC.Y.0043.200420T1600Z-200421T2200Z/
Sheboygan to Port Washington WI-
Port Washington to North Point Light WI-
North Point Light to Wind Point WI-
Wind Point WI to Winthrop Harbor IL-
911 AM CDT Mon Apr 20 2020

...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 5 PM CDT
TUESDAY...

* WHAT...Southwest winds 15 to 20 kt with gusts up to 30 kt 
  expected becoming northwest tonight.

* WHERE...Nearshore Waters from Sheboygan WI to Winthrop Harbor 
  IL.

* WHEN...From 11 AM this morning to 5 PM CDT 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.

&&

$$

LMZ080-567-669-671-673-675-777-779-868-870-872-874-876-878-202215-
/O.CON.KMKX.GL.A.0020.200421T0600Z-200421T1800Z/
Lake Michigan Michigan City IN to St. Joseph MI 5 NM offshore to
mid-line of lake.-
Lake Michigan from Two Rivers to Sheboygan WI 5NM offshore to Mid
Lake-
Lake Michigan from Sheboygan to Port Washington WI 5NM offshore
to Mid Lake-
Lake Michigan from Port Washington to North Point Light WI 5NM
offshore to Mid Lake-
Lake Michigan from North Point Light to Wind Point WI 5NM
offshore to Mid Lake-
Lake Michigan from Wind Point WI to Winthrop Harbor IL 5NM
offshore to Mid Lake-
Lake Michigan from Winthrop Harbor to Wilmette Harbor IL 5NM
offshore to Mid Lake-
Lake Michigan from Wilmette Harbor to Michigan City in 5NM
offshore to Mid Lake-
Lake Michigan from Pentwater to Manistee MI 5NM offshore to Mid
Lake-
Lake Michigan from Whitehall to Pentwater MI 5NM offshore to Mid
Lake-
Lake Michigan from Grand Haven to Whitehall MI 5NM offshore to
Mid Lake-
Lake Michigan from Holland to Grand Haven MI 5NM offshore to Mid
Lake-
Lake Michigan from South Haven to Holland MI 5NM offshore to Mid
lake-
Lake Michigan from St Joseph to South Haven MI 5NM offshore to
Mid Lake-
911 AM CDT Mon Apr 20 2020

...GALE WATCH REMAINS IN EFFECT FROM LATE TONIGHT THROUGH TUESDAY
AFTERNOON...

* WHAT...Northwest winds 15 to 25 kt with gusts around 35 kt will
  develop later tonight and waves 6 to 9 feet possible.

* WHERE...Southern Open Waters of Lake Michigan, Lake Michigan 
  from Two Rivers to Sheboygan WI 5NM offshore to Mid Lake, and 
  Lake Michigan from Pentwater to Manistee MI 5NM offshore to 
  Mid Lake.

* WHEN...From late tonight through Tuesday afternoon.

* 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.

&&

$$
MBK

049 
WHUS73 KMKX 201925
MWWMKX

URGENT - MARINE WEATHER MESSAGE
National Weather Service Milwaukee/Sullivan WI
225 PM CDT Mon Apr 20 2020

LMZ080-567-669-671-673-675-777-779-868-870-872-874-876-878-210330-
/O.EXB.KMKX.GL.W.0021.200420T2200Z-200421T1800Z/
/O.UPG.KMKX.GL.A.0020.200421T0600Z-200421T1800Z/
Lake Michigan Michigan City IN to St. Joseph MI 5 NM offshore to
mid-line of lake.-
Lake Michigan from Two Rivers to Sheboygan WI 5NM offshore to Mid
Lake-
Lake Michigan from Sheboygan to Port Washington WI 5NM offshore
to Mid Lake-
Lake Michigan from Port Washington to North Point Light WI 5NM
offshore to Mid Lake-
Lake Michigan from North Point Light to Wind Point WI 5NM
offshore to Mid Lake-
Lake Michigan from Wind Point WI to Winthrop Harbor IL 5NM
offshore to Mid Lake-
Lake Michigan from Winthrop Harbor to Wilmette Harbor IL 5NM
offshore to Mid Lake-
Lake Michigan from Wilmette Harbor to Michigan City in 5NM
offshore to Mid Lake-
Lake Michigan from Pentwater to Manistee MI 5NM offshore to Mid
Lake-
Lake Michigan from Whitehall to Pentwater MI 5NM offshore to Mid
Lake-
Lake Michigan from Grand Haven to Whitehall MI 5NM offshore to
Mid Lake-
Lake Michigan from Holland to Grand Haven MI 5NM offshore to Mid
Lake-
Lake Michigan from South Haven to Holland MI 5NM offshore to Mid
lake-
Lake Michigan from St Joseph to South Haven MI 5NM offshore to
Mid Lake-
225 PM CDT Mon Apr 20 2020

...GALE WARNING IN EFFECT UNTIL 1 PM CDT TUESDAY...

* WHAT...Southwest winds 15 to 25 kt with gusts to 35 kt this
  evening will become northwest later tonight with gale force
  gusts up to 40 kt. Waves increasing to 6 to 9 feet.

* WHERE...Southern Open Waters of Lake Michigan, Lake Michigan 
  from Two Rivers to Sheboygan WI 5NM offshore to Mid Lake, and 
  Lake Michigan from Pentwater to Manistee MI 5NM offshore to 
  Mid Lake.

* WHEN...Until 1 PM CDT Tuesday.

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

* ADDITIONAL DETAILS...

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.

&&

$$

LMZ261-362-364-366-563-565-210330-
/O.CON.KMKX.GL.W.0021.000000T0000Z-200421T1800Z/
Lake Michigan from Seul Choix Point to Rock Island Passage 5NM
offshore to Mid Lake-
Lake Michigan South of a line from Seul Choix Point to the
Mackinac Bridge and North of a line from Charlevoix MI to South
Fox Island 5NM offshore-
Lake Michigan from Charlevoix to Point Betsie MI 5NM Offshore to
mid lake-
Lake Michigan from Point Betsie to Manistee MI 5NM offshore to
Mid Lake-
Lake Michigan from Rock Island Passage to Sturgeon Bay WI 5NM
offshore to mid lake-
Lake Michigan from Sturgeon Bay to Two Rivers WI 5NM offshore to
Mid Lake-
225 PM CDT Mon Apr 20 2020

...GALE WARNING REMAINS IN EFFECT UNTIL 1 PM CDT TUESDAY...

* WHAT...South to southwest gales to 35 knots becoming Northwest 
  winds 20 to 25 kt with gales to 40 kt later tonight. Waves 
  building to 5 to 8 feet.

* WHERE...Northern Third of the Open Waters of Lake Michigan, 
  Lake Michigan from Point Betsie to Manistee MI 5NM offshore to 
  Mid Lake, and Lake Michigan from Sturgeon Bay to Two Rivers WI 
  5NM offshore to Mid Lake.

* WHEN...Until 1 PM CDT Tuesday.

* 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.

&&

$$

LMZ643>646-210330-
/O.CON.KMKX.SC.Y.0043.000000T0000Z-200421T2200Z/
Sheboygan to Port Washington WI-
Port Washington to North Point Light WI-
North Point Light to Wind Point WI-
Wind Point WI to Winthrop Harbor IL-
225 PM CDT Mon Apr 20 2020

...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 5 PM CDT
TUESDAY...

* WHAT...Southwest winds 15 to 25 kt with gusts up to 30 kt 
  expected, becoming northwest tonight.

* WHERE...Nearshore Waters from Sheboygan WI to Winthrop Harbor 
  IL.

* WHEN...Through 5 PM CDT Tuesday.

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

* ADDITIONAL DETAILS...Showers and a few thunderstorms may produce
  strong wind gusts late this afternoon and evening in excess of
  35 kt. A Special Marine Warning may be needed for the near shore
  waters. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

$$
MBK

671 
WHUS73 KMKX 210201
MWWMKX

URGENT - MARINE WEATHER MESSAGE
National Weather Service Milwaukee/Sullivan WI
901 PM CDT Mon Apr 20 2020

LMZ080-261-362-364-366-563-565-567-669-671-673-675-777-779-868-
870-872-874-876-878-211015-
/O.CON.KMKX.GL.W.0021.000000T0000Z-200421T1800Z/
Lake Michigan Michigan City IN to St. Joseph MI 5 NM offshore to
mid-line of lake.-
Lake Michigan from Seul Choix Point to Rock Island Passage 5NM
offshore to Mid Lake-
Lake Michigan South of a line from Seul Choix Point to the
Mackinac Bridge and North of a line from Charlevoix MI to South
Fox Island 5NM offshore-
Lake Michigan from Charlevoix to Point Betsie MI 5NM Offshore to
mid lake-
Lake Michigan from Point Betsie to Manistee MI 5NM offshore to
Mid Lake-
Lake Michigan from Rock Island Passage to Sturgeon Bay WI 5NM
offshore to mid lake-
Lake Michigan from Sturgeon Bay to Two Rivers WI 5NM offshore to
Mid Lake-
Lake Michigan from Two Rivers to Sheboygan WI 5NM offshore to Mid
Lake-
Lake Michigan from Sheboygan to Port Washington WI 5NM offshore
to Mid Lake-
Lake Michigan from Port Washington to North Point Light WI 5NM
offshore to Mid Lake-
Lake Michigan from North Point Light to Wind Point WI 5NM
offshore to Mid Lake-
Lake Michigan from Wind Point WI to Winthrop Harbor IL 5NM
offshore to Mid Lake-
Lake Michigan from Winthrop Harbor to Wilmette Harbor IL 5NM
offshore to Mid Lake-
Lake Michigan from Wilmette Harbor to Michigan City in 5NM
offshore to Mid Lake-
Lake Michigan from Pentwater to Manistee MI 5NM offshore to Mid
Lake-
Lake Michigan from Whitehall to Pentwater MI 5NM offshore to Mid
Lake-
Lake Michigan from Grand Haven to Whitehall MI 5NM offshore to
Mid Lake-
Lake Michigan from Holland to Grand Haven MI 5NM offshore to Mid
Lake-
Lake Michigan from South Haven to Holland MI 5NM offshore to Mid
lake-
Lake Michigan from St Joseph to South Haven MI 5NM offshore to
Mid Lake-
901 PM CDT Mon Apr 20 2020

...GALE WARNING REMAINS IN EFFECT UNTIL 1 PM CDT TUESDAY...

* WHAT...Winds veering northwest overnight with gusts up to 40 
  kt. Waves increasing to 6 to 9 feet.

* WHERE...All of the Lake Michigan open waters.

* WHEN...Until 1 PM CDT Tuesday.

* IMPACTS...Strong winds can 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.

&&

$$

LMZ643>646-211015-
/O.CON.KMKX.SC.Y.0043.000000T0000Z-200421T2200Z/
Sheboygan to Port Washington WI-
Port Washington to North Point Light WI-
North Point Light to Wind Point WI-
Wind Point WI to Winthrop Harbor IL-
901 PM CDT Mon Apr 20 2020

...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 5 PM CDT
TUESDAY...

* WHAT...Southwest winds 15 to 25 kt with gusts up to 30 kt
  expected, becoming northwest overnight.

* WHERE...Nearshore Waters from Sheboygan WI to Winthrop Harbor 
  IL.

* WHEN...Through 5 PM CDT 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.

&&

$$
Wood

018 
WHUS73 KMKX 210836
MWWMKX

URGENT - MARINE WEATHER MESSAGE
National Weather Service Milwaukee/Sullivan WI
336 AM CDT Tue Apr 21 2020

LMZ080-261-362-364-366-563-565-567-669-671-673-675-777-779-868-
870-872-874-876-878-211800-
/O.CON.KMKX.GL.W.0021.000000T0000Z-200421T1800Z/
Lake Michigan Michigan City IN to St. Joseph MI 5 NM offshore to
mid-line of lake.-
Lake Michigan from Seul Choix Point to Rock Island Passage 5NM
offshore to Mid Lake-
Lake Michigan South of a line from Seul Choix Point to the
Mackinac Bridge and North of a line from Charlevoix MI to South
Fox Island 5NM offshore-
Lake Michigan from Charlevoix to Point Betsie MI 5NM Offshore to
mid lake-
Lake Michigan from Point Betsie to Manistee MI 5NM offshore to
Mid Lake-
Lake Michigan from Rock Island Passage to Sturgeon Bay WI 5NM
offshore to mid lake-
Lake Michigan from Sturgeon Bay to Two Rivers WI 5NM offshore to
Mid Lake-
Lake Michigan from Two Rivers to Sheboygan WI 5NM offshore to Mid
Lake-
Lake Michigan from Sheboygan to Port Washington WI 5NM offshore
to Mid Lake-
Lake Michigan from Port Washington to North Point Light WI 5NM
offshore to Mid Lake-
Lake Michigan from North Point Light to Wind Point WI 5NM
offshore to Mid Lake-
Lake Michigan from Wind Point WI to Winthrop Harbor IL 5NM
offshore to Mid Lake-
Lake Michigan from Winthrop Harbor to Wilmette Harbor IL 5NM
offshore to Mid Lake-
Lake Michigan from Wilmette Harbor to Michigan City in 5NM
offshore to Mid Lake-
Lake Michigan from Pentwater to Manistee MI 5NM offshore to Mid
Lake-
Lake Michigan from Whitehall to Pentwater MI 5NM offshore to Mid
Lake-
Lake Michigan from Grand Haven to Whitehall MI 5NM offshore to
Mid Lake-
Lake Michigan from Holland to Grand Haven MI 5NM offshore to Mid
Lake-
Lake Michigan from South Haven to Holland MI 5NM offshore to Mid
lake-
Lake Michigan from St Joseph to South Haven MI 5NM offshore to
Mid Lake-
336 AM CDT Tue Apr 21 2020

...GALE WARNING REMAINS IN EFFECT UNTIL 1 PM CDT THIS AFTERNOON...

* WHAT...Northwest winds 20 to 25 kt with gusts up to 40 kt and 
  waves 5 to 8 feet.

* WHERE...All Open Waters of Lake Michigan.

* WHEN...Until 1 PM CDT this afternoon.

* 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.

&&

$$

LMZ643>646-211800-
/O.CON.KMKX.SC.Y.0043.000000T0000Z-200421T2200Z/
Sheboygan to Port Washington WI-
Port Washington to North Point Light WI-
North Point Light to Wind Point WI-
Wind Point WI to Winthrop Harbor IL-
336 AM CDT Tue Apr 21 2020

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

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

* WHERE...Nearshore Waters from Sheboygan WI to Winthrop Harbor 
  IL.

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

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

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

$$

338 
WHUS73 KMKX 211348
MWWMKX

URGENT - MARINE WEATHER MESSAGE
National Weather Service Milwaukee/Sullivan WI
848 AM CDT Tue Apr 21 2020

LMZ261-362-364-366-563-565-567-868-212200-
/O.EXT.KMKX.GL.W.0021.000000T0000Z-200421T2200Z/
Lake Michigan from Seul Choix Point to Rock Island Passage 5NM
offshore to Mid Lake-
Lake Michigan South of a line from Seul Choix Point to the
Mackinac Bridge and North of a line from Charlevoix MI to South
Fox Island 5NM offshore-
Lake Michigan from Charlevoix to Point Betsie MI 5NM Offshore to
mid lake-
Lake Michigan from Point Betsie to Manistee MI 5NM offshore to
Mid Lake-
Lake Michigan from Rock Island Passage to Sturgeon Bay WI 5NM
offshore to mid lake-
Lake Michigan from Sturgeon Bay to Two Rivers WI 5NM offshore to
Mid Lake-
Lake Michigan from Two Rivers to Sheboygan WI 5NM offshore to Mid
Lake-
Lake Michigan from Pentwater to Manistee MI 5NM offshore to Mid
Lake-
848 AM CDT Tue Apr 21 2020

...GALE WARNING NOW IN EFFECT UNTIL 5 PM CDT THIS AFTERNOON...

* WHAT...Northwest winds 20 to 25 kt with gusts up to 40 kt and 
  waves 5 to 8 feet.  A few gusts to 45 knots this morning. 

* WHERE...Northern Open Waters of Lake Michigan.

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

* 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.

&&

$$

LMZ080-669-671-673-675-777-779-870-872-874-876-878-211800-
/O.CON.KMKX.GL.W.0021.000000T0000Z-200421T1800Z/
Lake Michigan Michigan City IN to St. Joseph MI 5 NM offshore to
mid-line of lake.-
Lake Michigan from Sheboygan to Port Washington WI 5NM offshore
to Mid Lake-
Lake Michigan from Port Washington to North Point Light WI 5NM
offshore to Mid Lake-
Lake Michigan from North Point Light to Wind Point WI 5NM
offshore to Mid Lake-
Lake Michigan from Wind Point WI to Winthrop Harbor IL 5NM
offshore to Mid Lake-
Lake Michigan from Winthrop Harbor to Wilmette Harbor IL 5NM
offshore to Mid Lake-
Lake Michigan from Wilmette Harbor to Michigan City in 5NM
offshore to Mid Lake-
Lake Michigan from Whitehall to Pentwater MI 5NM offshore to Mid
Lake-
Lake Michigan from Grand Haven to Whitehall MI 5NM offshore to
Mid Lake-
Lake Michigan from Holland to Grand Haven MI 5NM offshore to Mid
Lake-
Lake Michigan from South Haven to Holland MI 5NM offshore to Mid
lake-
Lake Michigan from St Joseph to South Haven MI 5NM offshore to
Mid Lake-
848 AM CDT Tue Apr 21 2020

...GALE WARNING REMAINS IN EFFECT UNTIL 1 PM CDT THIS AFTERNOON...

* WHAT...Northwest winds 20 to 25 kt with gusts up to 40 kt and 
  waves 5 to 8 feet.

* WHERE...Southern Open Waters of Lake Michigan.

* WHEN...Until 1 PM CDT this afternoon.

* 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.

&&

$$

LMZ643>646-212200-
/O.EXT.KMKX.SC.Y.0043.000000T0000Z-200421T2300Z/
Sheboygan to Port Washington WI-
Port Washington to North Point Light WI-
North Point Light to Wind Point WI-
Wind Point WI to Winthrop Harbor IL-
848 AM CDT Tue Apr 21 2020

...SMALL CRAFT ADVISORY NOW IN EFFECT UNTIL 6 PM CDT THIS
EVENING...

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

* WHERE...Nearshore Waters from Sheboygan WI to Winthrop Harbor 
  IL.

* WHEN...Until 6 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.

&&

$$
MBK

997 
WHUS73 KMKX 211742
MWWMKX

URGENT - MARINE WEATHER MESSAGE
National Weather Service Milwaukee/Sullivan WI
1242 PM CDT Tue Apr 21 2020

LMZ080-669-671-673-675-777-779-870-872-874-876-878-211845-
/O.EXP.KMKX.GL.W.0021.000000T0000Z-200421T1800Z/
Lake Michigan Michigan City IN to St. Joseph MI 5 NM offshore to
mid-line of lake.-
Lake Michigan from Sheboygan to Port Washington WI 5NM offshore
to Mid Lake-
Lake Michigan from Port Washington to North Point Light WI 5NM
offshore to Mid Lake-
Lake Michigan from North Point Light to Wind Point WI 5NM
offshore to Mid Lake-
Lake Michigan from Wind Point WI to Winthrop Harbor IL 5NM
offshore to Mid Lake-
Lake Michigan from Winthrop Harbor to Wilmette Harbor IL 5NM
offshore to Mid Lake-
Lake Michigan from Wilmette Harbor to Michigan City in 5NM
offshore to Mid Lake-
Lake Michigan from Whitehall to Pentwater MI 5NM offshore to Mid
Lake-
Lake Michigan from Grand Haven to Whitehall MI 5NM offshore to
Mid Lake-
Lake Michigan from Holland to Grand Haven MI 5NM offshore to Mid
Lake-
Lake Michigan from South Haven to Holland MI 5NM offshore to Mid
lake-
Lake Michigan from St Joseph to South Haven MI 5NM offshore to
Mid Lake-
1242 PM CDT Tue Apr 21 2020

...GALE WARNING WILL EXPIRE AT 1 PM CDT THIS AFTERNOON...

The threat for gale force gusts across the southern Lake Michigan
open waters has ended. Hence the Gale Warning will be allowed to
expire at 1 pm CDT.

$$

LMZ261-362-364-366-563-565-567-868-212200-
/O.CON.KMKX.GL.W.0021.000000T0000Z-200421T2200Z/
Lake Michigan from Seul Choix Point to Rock Island Passage 5NM
offshore to Mid Lake-
Lake Michigan South of a line from Seul Choix Point to the
Mackinac Bridge and North of a line from Charlevoix MI to South
Fox Island 5NM offshore-
Lake Michigan from Charlevoix to Point Betsie MI 5NM Offshore to
mid lake-
Lake Michigan from Point Betsie to Manistee MI 5NM offshore to
Mid Lake-
Lake Michigan from Rock Island Passage to Sturgeon Bay WI 5NM
offshore to mid lake-
Lake Michigan from Sturgeon Bay to Two Rivers WI 5NM offshore to
Mid Lake-
Lake Michigan from Two Rivers to Sheboygan WI 5NM offshore to Mid
Lake-
Lake Michigan from Pentwater to Manistee MI 5NM offshore to Mid
Lake-
1242 PM CDT Tue Apr 21 2020

...GALE WARNING REMAINS IN EFFECT UNTIL 5 PM CDT THIS AFTERNOON...

* WHAT...Northwest winds 20 to 25 kt with gusts up to 40 kt and
  waves 5 to 8 feet. 

* WHERE...Northern Open Waters of Lake Michigan.

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

* 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.

&&

$$

LMZ643>646-212300-
/O.CON.KMKX.SC.Y.0043.000000T0000Z-200421T2300Z/
Sheboygan to Port Washington WI-
Port Washington to North Point Light WI-
North Point Light to Wind Point WI-
Wind Point WI to Winthrop Harbor IL-
1242 PM CDT Tue Apr 21 2020

...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 6 PM CDT THIS
EVENING...

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

* WHERE...Nearshore Waters from Sheboygan WI to Winthrop Harbor 
  IL.

* WHEN...Until 6 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.

&&

$$
MBK

148 
WHUS73 KMKX 211948
MWWMKX

URGENT - MARINE WEATHER MESSAGE
National Weather Service Milwaukee/Sullivan WI
248 PM CDT Tue Apr 21 2020

LMZ261-362-364-366-563-565-567-868-212200-
/O.CON.KMKX.GL.W.0021.000000T0000Z-200421T2200Z/
Lake Michigan from Seul Choix Point to Rock Island Passage 5NM
offshore to Mid Lake-
Lake Michigan South of a line from Seul Choix Point to the
Mackinac Bridge and North of a line from Charlevoix MI to South
Fox Island 5NM offshore-
Lake Michigan from Charlevoix to Point Betsie MI 5NM Offshore to
mid lake-
Lake Michigan from Point Betsie to Manistee MI 5NM offshore to
Mid Lake-
Lake Michigan from Rock Island Passage to Sturgeon Bay WI 5NM
offshore to mid lake-
Lake Michigan from Sturgeon Bay to Two Rivers WI 5NM offshore to
Mid Lake-
Lake Michigan from Two Rivers to Sheboygan WI 5NM offshore to Mid
Lake-
Lake Michigan from Pentwater to Manistee MI 5NM offshore to Mid
Lake-
248 PM CDT Tue Apr 21 2020

...GALE WARNING REMAINS IN EFFECT UNTIL 5 PM CDT THIS AFTERNOON...

* WHAT...Northwest winds 20 to 25 kt with gusts up to 35 kt and 
  waves 5 to 8 feet.

* WHERE...Northern Open Waters of Lake Michigan.

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

* 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.

&&

$$

LMZ643>646-212300-
/O.CON.KMKX.SC.Y.0043.000000T0000Z-200421T2300Z/
Sheboygan to Port Washington WI-
Port Washington to North Point Light WI-
North Point Light to Wind Point WI-
Wind Point WI to Winthrop Harbor IL-
248 PM CDT Tue Apr 21 2020

...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 6 PM CDT THIS
EVENING...

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

* WHERE...Nearshore Waters from Sheboygan WI to Winthrop Harbor 
  IL.

* WHEN...Until 6 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.

&&

$$
MBK

Area Forecast Discussion
National Weather Service Milwaukee/Sullivan WI
1135 PM CDT Sun Apr 19 2020

.UPDATE...

Mostly clear skies and light winds will prevail overnight, with
temperatures falling into the upper 20s and low 30s.

&&

.AVIATION(06Z TAFS)...

Light winds are expected overnight, before becoming gusty from the
southwest by mid morning on Monday. Breezy conditions will
continue into the afternoon hours. A cold front will begin to
approach from the northwest, with showers and perhaps a couple of
thunderstorms moving into the area late Monday afternoon into
Monday evening. The rain/thunderstorm threat will end by later
Monday evening, with breezy northwest winds expected heading into
Monday night. VFR will prevail for most of the time tomorrow,
though brief reductions in visibility or ceilings is possible
with any of the heavier showers.

&&

.PREV DISCUSSION... (Issued 900 PM CDT Sun Apr 19 2020)

UPDATE...

Forecast details remain on track from previous the previous AFD
updates.

MARINE...

Winds will generally remain light and variable tonight owing to
high pressure and waves will generally diminish to less than one
foot. During the daytime hours tomorrow, the pressure gradient
over the area will tighten out ahead of an approaching cold front
and some winds gusting out of the W-SW to 30 kts will be possible.
Waves will increase to 1 to 3 feet in the nearshore to 3 to 5 feet
mid-lake during this time. Showers and a tstorm or two will be
possible along this front as it sinks southward during the
afternoon hours. NW gales to 35 kts will be possible in the post
frontal air mass Monday night into early Tuesday.

PREV DISCUSSION... (Issued 629 PM CDT Sun Apr 19 2020)

UPDATE...

The lake breeze boundary has made it to just west of the Waukesha
and Jefferson County border and extends roughly northeast and
south of these county borders. Slow westward progression will
continue for the next hour or two before the continued loss of
diurnal heating will cause the boundary to wash out. Otherwise,
forecast details remain on track from the previous discussion.

AVIATION(00Z TAFS)...

Light winds and VFR cigs and vis are likely tonight owing to
dominant high pressure. As we go into the afternoon hours
tomorrow, winds will become gusty ahead of an approaching cold
front. Showers and a tstorm or two will be possible along the
front, but cigs and vis will likely remain in VFR, as cloud bases
will be fairly high owing to low dewpoints at the surface.

PREV DISCUSSION... (Issued 330 PM CDT SUN APR 19 2020)

SHORT TERM...

TONIGHT THROUGH MONDAY NIGHT - Forecast Confidence...Medium.

Lake breeze will continue to move westward through the late
afternoon and then lose its punch by the early evening.  Drier air
should prevent any lake fog from developing and pushing inland, so a
quiet and cool night lies ahead with diminishing winds in the early
evening.

A vigorous mid-level short wave trof caught in the northwest
steering flow will amplify as it moves across the western Great
Lakes late tonight and Monday.  Synoptic lift from this wave will
move across southern WI during the mid afternoon through the evening
in conjunction with a passing cold front.  Low to mid level shear
will be impressive with 40 to 50 knots.  Lapse rates will be equally
impressive with 7 to 9 degrees through the low levels.  The only
limiting factor will be moisture.  Upstream dewpoints will fall into
the 20s to low 30s overnight.  Increasing southwest winds are
expected to pull low 40 dewpoints back into southern WI ahead of the
approaching front.  However the low level mixing may lower or keep
dewpoints in the 30s as the front approaches.  Due to this limiting
effect, SPC keeping WI in general thunder.  However can't rule out
some one half inch hail and gusty winds to 45 to 50 mph with some of
the stronger storms in the 22Z-02Z period.  The cold front quickly
exits southeast WI overnight Monday night with dry and breezy
conditions returning.

TUESDAY AND TUESDAY NIGHT - Forecast Confidence...High.

A quiet period is expected as weak high pressure moves through the
area.  Clouds will likely increase Tuesday night ahead of next
system approaching for Wednesday.  Will have to watch for a lake
breeze developing Tuesday afternoon.

LONG TERM...

WEDNESDAY AND WEDNESDAY NIGHT - Forecast Confidence...Medium.

A mid level shortwave trough and associated weak surface low
tracking from the Northern Plains to Wisconsin will weaken/stall
over southern WI Wednesday afternoon. Expect a subtle warm-up ahead
of this low due to low level warm air advection, with highs ranging
from the mid 50s east to the mid 60s inland. Winds will be
increasing out of the southwest Wednesday afternoon and hold steady
through the evening. 

The focus for afternoon/evening showers and a few thunderstorms is
the stalled surface trough, enhanced by a back door cold front, and
combined with 850mb warm air advection and a decent low level jet.
Instability in forecast soundings is present, but weak. There is
still some uncertainty on shower coverage along this front, but most
guidance points to southern WI during the late afternoon/evening
with a scattered/broken line. These showers should exit late
Wednesday night.

THURSDAY THROUGH FRIDAY - Forecast Confidence...Medium.

An upper low over the southern Mississippi River valley will shift
northeast through the Ohio River Valley Thursday through Friday.
Southern WI should remain dry, as this system is trending further
southeast. High temperatures on Thursday and Friday will range from
the around 50 near the lake to the around 60 inland. Skies will be
partly to mostly cloudy. 

FRIDAY NIGHT THROUGH SUNDAY - Forecast Confidence...Low

The next system to watch is the potential for a potent low to cross
the Upper Midwest. This would bring a brief warm-up, gusty winds,
showers, and thunderstorms to southern WI. The 12z deterministic
ECMWF is the most robust for our area at this time and the 12Z
Canadian is a little weaker and further north. The deterministic GFS
and ensemble GFS keep the system mainly to our south. Models have
been flip-flopping with this system.

We should have quiet weather across southern WI with high pressure
over the region. High temperatures are expected to be in the 50s,
coolest near the lake. 

&&

.MKX WATCHES/WARNINGS/ADVISORIES...
WI...None.
LM...Gale Watch from late Monday night through Tuesday afternoon for
     LMZ080-261-362-364-366-563-565-567-669-671-673-675-777-779-
     868-870-872-874-876-878.

     Small Craft Advisory from 11 AM Monday to 5 PM CDT Tuesday for
     LMZ643>646.

&&

Update...Boxell
Tonight/Monday and Aviation/Marine...Boxell
Monday Night through Sunday...99

Hazardous Weather Outlook
National Weather Service Milwaukee/Sullivan WI
231 PM CDT Sun Apr 19 2020

WIZ046-047-051-052-056>060-062>072-201945-
Marquette-Green Lake-Fond du Lac-Sheboygan-Sauk-Columbia-Dodge-
Washington-Ozaukee-Iowa-Dane-Jefferson-Waukesha-Milwaukee-
Lafayette-Green-Rock-Walworth-Racine-Kenosha-
231 PM CDT Sun Apr 19 2020

This Hazardous Weather Outlook is for portions of
east central Wisconsin, south central Wisconsin and
southeast Wisconsin.

.DAY ONE...Tonight

No hazardous weather is expected at this time.

.DAYS TWO THROUGH SEVEN...Monday through Sunday

There is a chance for thunderstorms Monday afternoon and evening.
Wind gusts to 45 mph and hail to one half inch may accompany a
thunderstorm.

Gusty southwest winds to 35 mph are expected on Monday.

There is also a slight chance of thunderstorms Wednesday
afternoon and evening.

.SPOTTER INFORMATION STATEMENT...

Spotter activation is not anticipated.

LMZ643>646-201945-
Sheboygan to Port Washington WI-
Port Washington to North Point Light WI-
North Point Light to Wind Point WI-
Wind Point WI to Winthrop Harbor IL-
231 PM CDT Sun Apr 19 2020

This Hazardous Weather Outlook is for the nearshore waters
from Sheboygan Wisconsin to Winthrop Harbor Illinois.

.DAY ONE...Late This Afternoon and Tonight

Gusty northeast winds will diminish late this afternoon and
evening. A few gusts to 25 knots are expected.

.DAYS TWO THROUGH SEVEN...Monday through Sunday

There is a chance for thunderstorms Monday afternoon and evening.

Periods of gusty winds are expected Monday through Wednesday. A
Small Craft Advisory is in effect from later Monday morning
through Tuesday afternoon. A few gale force gusts will be possible
late Monday night and Tuesday morning.

Small chances for thunderstorms return Wednesday afternoon and
evening.

LMZ080-261-362-364-366-563-565-567-669-671-673-675-777-779-868-
870-872-874-876-878-201945-
Lake Michigan Michigan City IN to St. Joseph MI 5 NM offshore to
mid-line of lake.-
Lake Michigan from Seul Choix Point to Rock Island Passage 5NM
offshore to Mid Lake-
Lake Michigan South of a line from Seul Choix Point to the
Mackinac Bridge and North of a line from Charlevoix MI to South
Fox Island 5NM offshore-
Lake Michigan from Charlevoix to Point Betsie MI 5NM Offshore to
mid lake-
Lake Michigan from Point Betsie to Manistee MI 5NM offshore to
Mid Lake-
Lake Michigan from Rock Island Passage to Sturgeon Bay WI 5NM
offshore to mid lake-
Lake Michigan from Sturgeon Bay to Two Rivers WI 5NM offshore to
Mid Lake-
Lake Michigan from Two Rivers to Sheboygan WI 5NM offshore to Mid
Lake-
Lake Michigan from Sheboygan to Port Washington WI 5NM offshore
to Mid Lake-
Lake Michigan from Port Washington to North Point Light WI 5NM
offshore to Mid Lake-
Lake Michigan from North Point Light to Wind Point WI 5NM
offshore to Mid Lake-
Lake Michigan from Wind Point WI to Winthrop Harbor IL 5NM
offshore to Mid Lake-
Lake Michigan from Winthrop Harbor to Wilmette Harbor IL 5NM
offshore to Mid Lake-
Lake Michigan from Wilmette Harbor to Michigan City in 5NM
offshore to Mid Lake-
Lake Michigan from Pentwater to Manistee MI 5NM offshore to Mid
Lake-
Lake Michigan from Whitehall to Pentwater MI 5NM offshore to Mid
Lake-
Lake Michigan from Grand Haven to Whitehall MI 5NM offshore to
Mid Lake-
Lake Michigan from Holland to Grand Haven MI 5NM offshore to Mid
Lake-
Lake Michigan from South Haven to Holland MI 5NM offshore to Mid
lake-
Lake Michigan from St Joseph to South Haven MI 5NM offshore to
Mid Lake-
231 PM CDT Sun Apr 19 2020

This Hazardous Weather Outlook is for the open waters of Lake
Michigan.

.DAY ONE...Tonight

No hazardous weather is expected at this time.

.DAYS TWO THROUGH SEVEN...Monday through Sunday

There is a chance for thunderstorms Monday afternoon and evening.

Gusty southwesterly winds will approach gale force across the far
northern portions of the lake Monday afternoon.

Gusty northwest winds are expected later Monday night and Tuesday.
A Gale Watch has been posted for the Lake Michigan open waters
from after midnight Monday night through Tuesday morning.

Small chances for thunderstorms return to the southern Lake
Michigan open waters Wednesday afternoon and evening.

www.weather.gov/mkx

MBK