Gale Warning 45, NWS Chicago, IL

792 
WHUS73 KLOT 201551
MWWLOT

URGENT - MARINE WEATHER MESSAGE
NATIONAL WEATHER SERVICE CHICAGO IL
951 AM CST THU JAN 20 2011

LMZ080-261-362-364-366-563-565-567-669-671-673-675-740>745-777-
779-868-870-872-874-876-878-210000-
/O.CON.KLOT.GL.W.0045.110120T2100Z-110121T1800Z/
/O.CON.KLOT.UP.W.0001.110120T2100Z-110121T1800Z/
LAKE MICHIGAN FROM MICHIGAN CITY IN TO ST. JOSEPH MI 5 NM
OFFSHORE TO MID LAKE-
LAKE MICHIGAN FROM SEUL CHOIX POINT TO ROCK ISLAND PASSAGE 5 NM
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 5 NM OFFSHORE-
LAKE MICHIGAN FROM CHARLEVOIX TO POINT BETSIE MI 5 NM OFFSHORE TO
MID LAKE-
LAKE MICHIGAN FROM POINT BETSIE TO MANISTEE MI 5 NM OFFSHORE TO
MID LAKE-
LAKE MICHIGAN FROM ROCK ISLAND PASSAGE TO STURGEON BAY WI-
LAKE MICHIGAN FROM STURGEON BAY TO TWO RIVERS WI 5 NM OFFSHORE TO
MID LAKE-
LAKE MICHIGAN FROM TWO RIVERS TO SHEBOYGAN WI 5 NM OFFSHORE TO
MID LAKE-
LAKE MICHIGAN FROM SHEBOYGAN TO PORT WASHINGTON WI 5 NM OFFSHORE
TO MID LAKE-
LAKE MICHIGAN FROM PORT WASHINGTON TO NORTH POINT LIGHT WI 5 NM
OFFSHORE TO MID LAKE-
LAKE MICHIGAN FROM NORTH POINT LIGHT TO WIND POINT WI 5 NM
OFFSHORE TO MID LAKE-
LAKE MICHIGAN FROM WIND POINT WI TO WINTHROP HARBOR IL 5 NM
OFFSHORE TO MID LAKE-WINTHROP HARBOR TO WILMETTE HARBOR-
WILMETTE HARBOR TO NORTHERLY ISLAND-
NORTHERLY ISLAND TO CALUMET HARBOR-CALUMET HARBOR TO GARY-
GARY TO BURNS HARBOR-BURNS HARBOR TO MICHIGAN CITY-
LAKE MICHIGAN FROM WINTHROP HARBOR TO WILMETTE HARBOR IL 5 NM
OFFSHORE TO MID LAKE-
LAKE MICHIGAN FROM WILMETTE HARBOR IL TO MICHIGAN CITY IN 5 NM
OFFSHORE TO MID LAKE-
LAKE MICHIGAN FROM PENTWATER TO MANISTEE MI 5 NM OFFSHORE TO MID
LAKE-
LAKE MICHIGAN FROM WHITEHALL TO PENTWATER MI 5 NM OFFSHORE TO MID
LAKE-
LAKE MICHIGAN FROM GRAND HAVEN TO WHITEHALL MI 5 NM OFFSHORE TO
MID LAKE-
LAKE MICHIGAN FROM HOLLAND TO GRAND HAVEN MI 5 NM OFFSHORE TO MID
LAKE-
LAKE MICHIGAN FROM SOUTH HAVEN TO HOLLAND MI 5 NM OFFSHORE TO MID
LAKE-
LAKE MICHIGAN FROM ST. JOSEPH TO SOUTH HAVEN MI 5 NM OFFSHORE TO
MID LAKE-
951 AM CST THU JAN 20 2011

...GALE WARNING REMAINS IN EFFECT FROM 3 PM THIS AFTERNOON TO
NOON CST FRIDAY...
...HEAVY FREEZING SPRAY WARNING REMAINS IN EFFECT FROM 3 PM THIS
AFTERNOON TO NOON CST FRIDAY...

A HEAVY FREEZING SPRAY WARNING REMAINS IN EFFECT FROM 3 PM THIS
AFTERNOON TO NOON CST FRIDAY. 

* EXPECT HEAVY FREEZING SPRAY TO OCCUR FROM 3 PM THIS AFTERNOON 
  TO NOON CST FRIDAY.

A GALE WARNING REMAINS IN EFFECT FROM 3 PM THIS AFTERNOON TO NOON
CST FRIDAY. 

* EXPECT SUSTAINED GALE FORCE WINDS OR FREQUENT GALE FORCE GUSTS 
  FROM 3 PM THIS AFTERNOON TO NOON CST FRIDAY.

* DURING THE GALE WARNING...THE STRONGEST WINDS WILL BE UP TO 40 
  KT FROM THE NORTHWEST. THE HIGHEST SIGNIFICANT WAVES WILL BE 
  UP TO 14 FT. THERE WILL BE OCCASIONAL WAVES UP TO 21 FT.

REFER TO THE LATEST MARINE FORECASTS FOR MORE DETAILED
INFORMATION.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A HEAVY FREEZING SPRAY WARNING MEANS HEAVY FREEZING SPRAY IS
EXPECTED TO RAPIDLY ACCUMULATE ON VESSELS. THESE CONDITIONS CAN
BE EXTREMELY HAZARDOUS TO NAVIGATION. IT IS RECOMMENDED THAT
MARINERS NOT TRAINED TO OPERATE IN THESE CONDITIONS OR VESSELS
NOT PROPERLY EQUIPPED TO DO SO...REMAIN IN PORT OR AVOID THE
WARNING AREA.

A GALE WARNING MEANS WINDS OF 34 TO 47 KNOTS ARE IMMINENT OR
OCCURRING. OPERATING A VESSEL IN GALE CONDITIONS REQUIRES
EXPERIENCE AND PROPERLY EQUIPPED VESSELS. IT IS HIGHLY
RECOMMENDED THAT MARINERS WITHOUT THE PROPER EXPERIENCE SEEK SAFE
HARBOR PRIOR TO THE ONSET OF GALE CONDITIONS.

&&

$$

968 
WHUS73 KLOT 202111
MWWLOT

URGENT - MARINE WEATHER MESSAGE
NATIONAL WEATHER SERVICE CHICAGO IL
311 PM CST THU JAN 20 2011

LMZ080-261-362-364-366-563-565-567-669-671-673-675-740>745-777-
779-868-870-872-874-876-878-210515-
/O.CON.KLOT.GL.W.0045.000000T0000Z-110121T1800Z/
/O.CON.KLOT.UP.W.0001.000000T0000Z-110121T1800Z/
LAKE MICHIGAN FROM MICHIGAN CITY IN TO ST. JOSEPH MI 5 NM
OFFSHORE TO MID LAKE-
LAKE MICHIGAN FROM SEUL CHOIX POINT TO ROCK ISLAND PASSAGE 5 NM
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 5 NM OFFSHORE-
LAKE MICHIGAN FROM CHARLEVOIX TO POINT BETSIE MI 5 NM OFFSHORE TO
MID LAKE-
LAKE MICHIGAN FROM POINT BETSIE TO MANISTEE MI 5 NM OFFSHORE TO
MID LAKE-
LAKE MICHIGAN FROM ROCK ISLAND PASSAGE TO STURGEON BAY WI-
LAKE MICHIGAN FROM STURGEON BAY TO TWO RIVERS WI 5 NM OFFSHORE TO
MID LAKE-
LAKE MICHIGAN FROM TWO RIVERS TO SHEBOYGAN WI 5 NM OFFSHORE TO
MID LAKE-
LAKE MICHIGAN FROM SHEBOYGAN TO PORT WASHINGTON WI 5 NM OFFSHORE
TO MID LAKE-
LAKE MICHIGAN FROM PORT WASHINGTON TO NORTH POINT LIGHT WI 5 NM
OFFSHORE TO MID LAKE-
LAKE MICHIGAN FROM NORTH POINT LIGHT TO WIND POINT WI 5 NM
OFFSHORE TO MID LAKE-
LAKE MICHIGAN FROM WIND POINT WI TO WINTHROP HARBOR IL 5 NM
OFFSHORE TO MID LAKE-WINTHROP HARBOR TO WILMETTE HARBOR-
WILMETTE HARBOR TO NORTHERLY ISLAND-
NORTHERLY ISLAND TO CALUMET HARBOR-CALUMET HARBOR TO GARY-
GARY TO BURNS HARBOR-BURNS HARBOR TO MICHIGAN CITY-
LAKE MICHIGAN FROM WINTHROP HARBOR TO WILMETTE HARBOR IL 5 NM
OFFSHORE TO MID LAKE-
LAKE MICHIGAN FROM WILMETTE HARBOR IL TO MICHIGAN CITY IN 5 NM
OFFSHORE TO MID LAKE-
LAKE MICHIGAN FROM PENTWATER TO MANISTEE MI 5 NM OFFSHORE TO MID
LAKE-
LAKE MICHIGAN FROM WHITEHALL TO PENTWATER MI 5 NM OFFSHORE TO MID
LAKE-
LAKE MICHIGAN FROM GRAND HAVEN TO WHITEHALL MI 5 NM OFFSHORE TO
MID LAKE-
LAKE MICHIGAN FROM HOLLAND TO GRAND HAVEN MI 5 NM OFFSHORE TO MID
LAKE-
LAKE MICHIGAN FROM SOUTH HAVEN TO HOLLAND MI 5 NM OFFSHORE TO MID
LAKE-
LAKE MICHIGAN FROM ST. JOSEPH TO SOUTH HAVEN MI 5 NM OFFSHORE TO
MID LAKE-
311 PM CST THU JAN 20 2011

...GALE WARNING REMAINS IN EFFECT UNTIL NOON CST FRIDAY...
...HEAVY FREEZING SPRAY WARNING REMAINS IN EFFECT UNTIL NOON CST
FRIDAY...

A HEAVY FREEZING SPRAY WARNING REMAINS IN EFFECT UNTIL NOON CST
FRIDAY. 

* EXPECT HEAVY FREEZING SPRAY TO OCCUR UNTIL NOON CST FRIDAY.

A GALE WARNING REMAINS IN EFFECT UNTIL NOON CST FRIDAY. 

* EXPECT SUSTAINED GALE FORCE WINDS OR FREQUENT GALE FORCE GUSTS 
  UNTIL NOON CST FRIDAY.

* DURING THE GALE WARNING...THE STRONGEST WINDS WILL BE UP TO 35 KT
  FROM THE NORTHWEST. THE HIGHEST SIGNIFICANT WAVES WILL BE UP TO
  13 FT. THERE WILL BE OCCASIONAL WAVES UP TO 20 FT.

REFER TO THE LATEST MARINE FORECASTS FOR MORE DETAILED
INFORMATION.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A HEAVY FREEZING SPRAY WARNING MEANS HEAVY FREEZING SPRAY IS
EXPECTED TO RAPIDLY ACCUMULATE ON VESSELS. THESE CONDITIONS CAN
BE EXTREMELY HAZARDOUS TO NAVIGATION. IT IS RECOMMENDED THAT
MARINERS NOT TRAINED TO OPERATE IN THESE CONDITIONS OR VESSELS
NOT PROPERLY EQUIPPED TO DO SO...REMAIN IN PORT OR AVOID THE
WARNING AREA.

A GALE WARNING MEANS WINDS OF 34 TO 47 KNOTS ARE IMMINENT OR
OCCURRING. OPERATING A VESSEL IN GALE CONDITIONS REQUIRES
EXPERIENCE AND PROPERLY EQUIPPED VESSELS. IT IS HIGHLY
RECOMMENDED THAT MARINERS WITHOUT THE PROPER EXPERIENCE SEEK SAFE
HARBOR PRIOR TO THE ONSET OF GALE CONDITIONS.

&&

$$

111 
WHUS73 KLOT 210319
MWWLOT

URGENT - MARINE WEATHER MESSAGE
NATIONAL WEATHER SERVICE CHICAGO IL
919 PM CST THU JAN 20 2011

LMZ080-261-362-364-366-563-565-567-669-671-673-675-740>745-777-
779-868-870-872-874-876-878-211130-
/O.CON.KLOT.GL.W.0045.000000T0000Z-110121T1800Z/
/O.CON.KLOT.UP.W.0001.000000T0000Z-110121T1800Z/
LAKE MICHIGAN FROM MICHIGAN CITY IN TO ST. JOSEPH MI 5 NM
OFFSHORE TO MID LAKE-
LAKE MICHIGAN FROM SEUL CHOIX POINT TO ROCK ISLAND PASSAGE 5 NM
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 5 NM OFFSHORE-
LAKE MICHIGAN FROM CHARLEVOIX TO POINT BETSIE MI 5 NM OFFSHORE TO
MID LAKE-
LAKE MICHIGAN FROM POINT BETSIE TO MANISTEE MI 5 NM OFFSHORE TO
MID LAKE-
LAKE MICHIGAN FROM ROCK ISLAND PASSAGE TO STURGEON BAY WI-
LAKE MICHIGAN FROM STURGEON BAY TO TWO RIVERS WI 5 NM OFFSHORE TO
MID LAKE-
LAKE MICHIGAN FROM TWO RIVERS TO SHEBOYGAN WI 5 NM OFFSHORE TO
MID LAKE-
LAKE MICHIGAN FROM SHEBOYGAN TO PORT WASHINGTON WI 5 NM OFFSHORE
TO MID LAKE-
LAKE MICHIGAN FROM PORT WASHINGTON TO NORTH POINT LIGHT WI 5 NM
OFFSHORE TO MID LAKE-
LAKE MICHIGAN FROM NORTH POINT LIGHT TO WIND POINT WI 5 NM
OFFSHORE TO MID LAKE-
LAKE MICHIGAN FROM WIND POINT WI TO WINTHROP HARBOR IL 5 NM
OFFSHORE TO MID LAKE-WINTHROP HARBOR TO WILMETTE HARBOR-
WILMETTE HARBOR TO NORTHERLY ISLAND-
NORTHERLY ISLAND TO CALUMET HARBOR-CALUMET HARBOR TO GARY-
GARY TO BURNS HARBOR-BURNS HARBOR TO MICHIGAN CITY-
LAKE MICHIGAN FROM WINTHROP HARBOR TO WILMETTE HARBOR IL 5 NM
OFFSHORE TO MID LAKE-
LAKE MICHIGAN FROM WILMETTE HARBOR IL TO MICHIGAN CITY IN 5 NM
OFFSHORE TO MID LAKE-
LAKE MICHIGAN FROM PENTWATER TO MANISTEE MI 5 NM OFFSHORE TO MID
LAKE-
LAKE MICHIGAN FROM WHITEHALL TO PENTWATER MI 5 NM OFFSHORE TO MID
LAKE-
LAKE MICHIGAN FROM GRAND HAVEN TO WHITEHALL MI 5 NM OFFSHORE TO
MID LAKE-
LAKE MICHIGAN FROM HOLLAND TO GRAND HAVEN MI 5 NM OFFSHORE TO MID
LAKE-
LAKE MICHIGAN FROM SOUTH HAVEN TO HOLLAND MI 5 NM OFFSHORE TO MID
LAKE-
LAKE MICHIGAN FROM ST. JOSEPH TO SOUTH HAVEN MI 5 NM OFFSHORE TO
MID LAKE-
919 PM CST THU JAN 20 2011

...GALE WARNING REMAINS IN EFFECT UNTIL NOON CST FRIDAY...
...HEAVY FREEZING SPRAY WARNING REMAINS IN EFFECT UNTIL NOON CST
FRIDAY...

A HEAVY FREEZING SPRAY WARNING REMAINS IN EFFECT UNTIL NOON CST
FRIDAY. 

* EXPECT HEAVY FREEZING SPRAY TO OCCUR UNTIL NOON CST FRIDAY.

A GALE WARNING REMAINS IN EFFECT UNTIL NOON CST FRIDAY. 

* EXPECT SUSTAINED GALE FORCE WINDS OR FREQUENT GALE FORCE GUSTS 
  UNTIL NOON CST FRIDAY.

* DURING THE GALE WARNING...THE STRONGEST WINDS WILL BE UP TO 40
  KT FROM THE NORTHWEST. THE HIGHEST SIGNIFICANT WAVES WILL BE UP
  TO 16 FT. THERE WILL BE OCCASIONAL WAVES UP TO 20 FT.

REFER TO THE LATEST MARINE FORECASTS FOR MORE DETAILED
INFORMATION.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A HEAVY FREEZING SPRAY WARNING MEANS HEAVY FREEZING SPRAY IS
EXPECTED TO RAPIDLY ACCUMULATE ON VESSELS. THESE CONDITIONS CAN
BE EXTREMELY HAZARDOUS TO NAVIGATION. IT IS RECOMMENDED THAT
MARINERS NOT TRAINED TO OPERATE IN THESE CONDITIONS OR VESSELS
NOT PROPERLY EQUIPPED TO DO SO...REMAIN IN PORT OR AVOID THE
WARNING AREA.

A GALE WARNING MEANS WINDS OF 34 TO 47 KNOTS ARE IMMINENT OR
OCCURRING. OPERATING A VESSEL IN GALE CONDITIONS REQUIRES
EXPERIENCE AND PROPERLY EQUIPPED VESSELS. IT IS HIGHLY
RECOMMENDED THAT MARINERS WITHOUT THE PROPER EXPERIENCE SEEK SAFE
HARBOR PRIOR TO THE ONSET OF GALE CONDITIONS.

&&

$$

KJB

448 
WHUS73 KLOT 210918
MWWLOT

URGENT - MARINE WEATHER MESSAGE
NATIONAL WEATHER SERVICE CHICAGO IL
318 AM CST FRI JAN 21 2011

LMZ740>742-211730-
/O.CAN.KLOT.GL.W.0045.000000T0000Z-110121T1800Z/
/O.NEW.KLOT.SC.Y.0008.110121T0918Z-110121T1800Z/
/O.CON.KLOT.UP.W.0001.000000T0000Z-110121T1800Z/
WINTHROP HARBOR TO WILMETTE HARBOR-
WILMETTE HARBOR TO NORTHERLY ISLAND-
NORTHERLY ISLAND TO CALUMET HARBOR-
318 AM CST FRI JAN 21 2011

...SMALL CRAFT ADVISORY IN EFFECT UNTIL NOON CST TODAY...
...HEAVY FREEZING SPRAY WARNING REMAINS IN EFFECT UNTIL NOON CST
TODAY...
...GALE WARNING IS CANCELLED...

THE NATIONAL WEATHER SERVICE IN CHICAGO HAS ISSUED A SMALL CRAFT
ADVISORY...WHICH IS IN EFFECT UNTIL NOON CST TODAY. 

* EXPECT HAZARDOUS CONDITIONS FOR SMALL CRAFT UNTIL NOON CST 
  TODAY.

* DURING THE SMALL CRAFT ADVISORY...THE STRONGEST WINDS WILL BE UP
  TO 25 KT FROM THE NORTHWEST. THE HIGHEST SIGNIFICANT WAVES WILL
  BE UP TO 4 FT. THERE WILL BE OCCASIONAL WAVES UP TO 6 FT.

WIND SPEEDS WILL REMAIN BELOW GALE FORCE. THEREFORE...THE GALE
WARNING HAS BEEN CANCELLED. A HEAVY FREEZING SPRAY WARNING REMAINS
IN EFFECT UNTIL NOON CST TODAY.

* EXPECT HEAVY FREEZING SPRAY TO OCCUR UNTIL NOON CST TODAY.

REFER TO THE LATEST MARINE FORECASTS FOR MORE DETAILED
INFORMATION.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A HEAVY FREEZING SPRAY WARNING MEANS HEAVY FREEZING SPRAY IS
EXPECTED TO RAPIDLY ACCUMULATE ON VESSELS. THESE CONDITIONS CAN
BE EXTREMELY HAZARDOUS TO NAVIGATION. IT IS RECOMMENDED THAT
MARINERS NOT TRAINED TO OPERATE IN THESE CONDITIONS OR VESSELS
NOT PROPERLY EQUIPPED TO DO SO...REMAIN IN PORT OR AVOID THE
WARNING AREA.

A SMALL CRAFT ADVISORY MEANS THAT WINDS OF 22 TO 33 KNOTS AND/OR
WAVES GREATER THAN 4 FT WILL PRODUCE HAZARDOUS WAVE CONDITIONS
FOR SMALL CRAFT. INEXPERIENCED MARINERS...ESPECIALLY THOSE
OPERATING SMALLER VESSELS SHOULD AVOID NAVIGATING IN THESE
CONDITIONS.

&&

$$

LMZ080-261-362-364-366-563-565-567-669-671-673-675-743>745-777-
779-868-870-872-874-876-878-211730-
/O.CON.KLOT.GL.W.0045.000000T0000Z-110121T1800Z/
/O.CON.KLOT.UP.W.0001.000000T0000Z-110121T1800Z/
LAKE MICHIGAN FROM MICHIGAN CITY IN TO ST. JOSEPH MI 5 NM
OFFSHORE TO MID LAKE-
LAKE MICHIGAN FROM SEUL CHOIX POINT TO ROCK ISLAND PASSAGE 5 NM
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 5 NM OFFSHORE-
LAKE MICHIGAN FROM CHARLEVOIX TO POINT BETSIE MI 5 NM OFFSHORE TO
MID LAKE-
LAKE MICHIGAN FROM POINT BETSIE TO MANISTEE MI 5 NM OFFSHORE TO
MID LAKE-
LAKE MICHIGAN FROM ROCK ISLAND PASSAGE TO STURGEON BAY WI-
LAKE MICHIGAN FROM STURGEON BAY TO TWO RIVERS WI 5 NM OFFSHORE TO
MID LAKE-
LAKE MICHIGAN FROM TWO RIVERS TO SHEBOYGAN WI 5 NM OFFSHORE TO
MID LAKE-
LAKE MICHIGAN FROM SHEBOYGAN TO PORT WASHINGTON WI 5 NM OFFSHORE
TO MID LAKE-
LAKE MICHIGAN FROM PORT WASHINGTON TO NORTH POINT LIGHT WI 5 NM
OFFSHORE TO MID LAKE-
LAKE MICHIGAN FROM NORTH POINT LIGHT TO WIND POINT WI 5 NM
OFFSHORE TO MID LAKE-
LAKE MICHIGAN FROM WIND POINT WI TO WINTHROP HARBOR IL 5 NM
OFFSHORE TO MID LAKE-CALUMET HARBOR TO GARY-GARY TO BURNS HARBOR-
BURNS HARBOR TO MICHIGAN CITY-
LAKE MICHIGAN FROM WINTHROP HARBOR TO WILMETTE HARBOR IL 5 NM
OFFSHORE TO MID LAKE-
LAKE MICHIGAN FROM WILMETTE HARBOR IL TO MICHIGAN CITY IN 5 NM
OFFSHORE TO MID LAKE-
LAKE MICHIGAN FROM PENTWATER TO MANISTEE MI 5 NM OFFSHORE TO MID
LAKE-
LAKE MICHIGAN FROM WHITEHALL TO PENTWATER MI 5 NM OFFSHORE TO MID
LAKE-
LAKE MICHIGAN FROM GRAND HAVEN TO WHITEHALL MI 5 NM OFFSHORE TO
MID LAKE-
LAKE MICHIGAN FROM HOLLAND TO GRAND HAVEN MI 5 NM OFFSHORE TO MID
LAKE-
LAKE MICHIGAN FROM SOUTH HAVEN TO HOLLAND MI 5 NM OFFSHORE TO MID
LAKE-
LAKE MICHIGAN FROM ST. JOSEPH TO SOUTH HAVEN MI 5 NM OFFSHORE TO
MID LAKE-
318 AM CST FRI JAN 21 2011

...GALE WARNING REMAINS IN EFFECT UNTIL NOON CST TODAY...
...HEAVY FREEZING SPRAY WARNING REMAINS IN EFFECT UNTIL NOON CST
TODAY...

A HEAVY FREEZING SPRAY WARNING REMAINS IN EFFECT UNTIL NOON CST
TODAY. 

* EXPECT HEAVY FREEZING SPRAY TO OCCUR UNTIL NOON CST TODAY.

A GALE WARNING REMAINS IN EFFECT UNTIL NOON CST TODAY. 

* EXPECT SUSTAINED GALE FORCE WINDS OR FREQUENT GALE FORCE GUSTS 
  UNTIL NOON CST TODAY.

* DURING THE GALE WARNING...THE STRONGEST WINDS WILL BE UP TO 35 KT
  FROM THE NORTHWEST. THE HIGHEST SIGNIFICANT WAVES WILL BE UP TO
  12 FT. THERE WILL BE OCCASIONAL WAVES UP TO 18 FT.

REFER TO THE LATEST MARINE FORECASTS FOR MORE DETAILED
INFORMATION.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A HEAVY FREEZING SPRAY WARNING MEANS HEAVY FREEZING SPRAY IS
EXPECTED TO RAPIDLY ACCUMULATE ON VESSELS. THESE CONDITIONS CAN
BE EXTREMELY HAZARDOUS TO NAVIGATION. IT IS RECOMMENDED THAT
MARINERS NOT TRAINED TO OPERATE IN THESE CONDITIONS OR VESSELS
NOT PROPERLY EQUIPPED TO DO SO...REMAIN IN PORT OR AVOID THE
WARNING AREA.

A GALE WARNING MEANS WINDS OF 34 TO 47 KNOTS ARE IMMINENT OR
OCCURRING. OPERATING A VESSEL IN GALE CONDITIONS REQUIRES
EXPERIENCE AND PROPERLY EQUIPPED VESSELS. IT IS HIGHLY
RECOMMENDED THAT MARINERS WITHOUT THE PROPER EXPERIENCE SEEK SAFE
HARBOR PRIOR TO THE ONSET OF GALE CONDITIONS.

&&

$$

KJB

611 
WHUS73 KLOT 211549
MWWLOT

URGENT - MARINE WEATHER MESSAGE
NATIONAL WEATHER SERVICE CHICAGO IL
949 AM CST FRI JAN 21 2011

LMZ743>745-220000-
/O.CAN.KLOT.GL.W.0045.000000T0000Z-110121T1800Z/
/O.NEW.KLOT.SC.Y.0009.110121T1549Z-110122T0300Z/
/O.CON.KLOT.UP.W.0001.000000T0000Z-110121T1800Z/
CALUMET HARBOR TO GARY-GARY TO BURNS HARBOR-
BURNS HARBOR TO MICHIGAN CITY-
949 AM CST FRI JAN 21 2011

...SMALL CRAFT ADVISORY IN EFFECT UNTIL 9 PM CST THIS EVENING...
...HEAVY FREEZING SPRAY WARNING REMAINS IN EFFECT UNTIL NOON CST
TODAY...
...GALE WARNING IS CANCELLED...

THE NATIONAL WEATHER SERVICE IN CHICAGO HAS ISSUED A SMALL CRAFT
ADVISORY...WHICH IS IN EFFECT UNTIL 9 PM CST THIS EVENING. 

* EXPECT HAZARDOUS CONDITIONS FOR SMALL CRAFT UNTIL 9 PM CST 
  THIS EVENING.

* DURING THE SMALL CRAFT ADVISORY...THE STRONGEST WINDS WILL BE 
  UP TO 25 KT FROM THE WEST.

THE GALE WARNING HAS BEEN CANCELLED. A HEAVY FREEZING SPRAY
WARNING REMAINS IN EFFECT UNTIL NOON CST TODAY. 

* EXPECT HEAVY FREEZING SPRAY TO OCCUR UNTIL NOON CST TODAY.

REFER TO THE LATEST MARINE FORECASTS FOR MORE DETAILED
INFORMATION.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A HEAVY FREEZING SPRAY WARNING MEANS HEAVY FREEZING SPRAY IS
EXPECTED TO RAPIDLY ACCUMULATE ON VESSELS. THESE CONDITIONS CAN
BE EXTREMELY HAZARDOUS TO NAVIGATION. IT IS RECOMMENDED THAT
MARINERS NOT TRAINED TO OPERATE IN THESE CONDITIONS OR VESSELS
NOT PROPERLY EQUIPPED TO DO SO...REMAIN IN PORT OR AVOID THE
WARNING AREA.

A SMALL CRAFT ADVISORY MEANS THAT WINDS OF 22 TO 33 KNOTS AND/OR
WAVES GREATER THAN 4 FT WILL PRODUCE HAZARDOUS WAVE CONDITIONS
FOR SMALL CRAFT. INEXPERIENCED MARINERS...ESPECIALLY THOSE
OPERATING SMALLER VESSELS SHOULD AVOID NAVIGATING IN THESE
CONDITIONS.

&&

$$

LMZ740>742-211700-
/O.CAN.KLOT.UP.W.0001.000000T0000Z-110121T1800Z/
/O.CAN.KLOT.SC.Y.0008.000000T0000Z-110121T1800Z/
WINTHROP HARBOR TO WILMETTE HARBOR-
WILMETTE HARBOR TO NORTHERLY ISLAND-
NORTHERLY ISLAND TO CALUMET HARBOR-
949 AM CST FRI JAN 21 2011

...HEAVY FREEZING SPRAY WARNING IS CANCELLED...
...SMALL CRAFT ADVISORY IS CANCELLED...

THE NATIONAL WEATHER SERVICE IN CHICAGO HAS CANCELLED THE HEAVY
FREEZING SPRAY WARNING. THE SMALL CRAFT ADVISORY HAS BEEN
CANCELLED. 

$$

LMZ080-261-362-364-366-563-565-567-669-671-673-675-777-779-868-
870-872-874-876-878-211800-
/O.CON.KLOT.GL.W.0045.000000T0000Z-110121T1800Z/
/O.CON.KLOT.UP.W.0001.000000T0000Z-110121T1800Z/
LAKE MICHIGAN FROM MICHIGAN CITY IN TO ST. JOSEPH MI 5 NM
OFFSHORE TO MID LAKE-
LAKE MICHIGAN FROM SEUL CHOIX POINT TO ROCK ISLAND PASSAGE 5 NM
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 5 NM OFFSHORE-
LAKE MICHIGAN FROM CHARLEVOIX TO POINT BETSIE MI 5 NM OFFSHORE TO
MID LAKE-
LAKE MICHIGAN FROM POINT BETSIE TO MANISTEE MI 5 NM OFFSHORE TO
MID LAKE-
LAKE MICHIGAN FROM ROCK ISLAND PASSAGE TO STURGEON BAY WI-
LAKE MICHIGAN FROM STURGEON BAY TO TWO RIVERS WI 5 NM OFFSHORE TO
MID LAKE-
LAKE MICHIGAN FROM TWO RIVERS TO SHEBOYGAN WI 5 NM OFFSHORE TO
MID LAKE-
LAKE MICHIGAN FROM SHEBOYGAN TO PORT WASHINGTON WI 5 NM OFFSHORE
TO MID LAKE-
LAKE MICHIGAN FROM PORT WASHINGTON TO NORTH POINT LIGHT WI 5 NM
OFFSHORE TO MID LAKE-
LAKE MICHIGAN FROM NORTH POINT LIGHT TO WIND POINT WI 5 NM
OFFSHORE TO MID LAKE-
LAKE MICHIGAN FROM WIND POINT WI TO WINTHROP HARBOR IL 5 NM
OFFSHORE TO MID LAKE-
LAKE MICHIGAN FROM WINTHROP HARBOR TO WILMETTE HARBOR IL 5 NM
OFFSHORE TO MID LAKE-
LAKE MICHIGAN FROM WILMETTE HARBOR IL TO MICHIGAN CITY IN 5 NM
OFFSHORE TO MID LAKE-
LAKE MICHIGAN FROM PENTWATER TO MANISTEE MI 5 NM OFFSHORE TO MID
LAKE-
LAKE MICHIGAN FROM WHITEHALL TO PENTWATER MI 5 NM OFFSHORE TO MID
LAKE-
LAKE MICHIGAN FROM GRAND HAVEN TO WHITEHALL MI 5 NM OFFSHORE TO
MID LAKE-
LAKE MICHIGAN FROM HOLLAND TO GRAND HAVEN MI 5 NM OFFSHORE TO MID
LAKE-
LAKE MICHIGAN FROM SOUTH HAVEN TO HOLLAND MI 5 NM OFFSHORE TO MID
LAKE-
LAKE MICHIGAN FROM ST. JOSEPH TO SOUTH HAVEN MI 5 NM OFFSHORE TO
MID LAKE-
949 AM CST FRI JAN 21 2011

...GALE WARNING REMAINS IN EFFECT UNTIL NOON CST TODAY...
...HEAVY FREEZING SPRAY WARNING REMAINS IN EFFECT UNTIL NOON CST
TODAY...

A HEAVY FREEZING SPRAY WARNING REMAINS IN EFFECT UNTIL NOON CST
TODAY. 

* EXPECT HEAVY FREEZING SPRAY TO OCCUR UNTIL NOON CST TODAY.

A GALE WARNING REMAINS IN EFFECT UNTIL NOON CST TODAY. 

* EXPECT SUSTAINED GALE FORCE WINDS OR FREQUENT GALE FORCE GUSTS 
  UNTIL NOON CST TODAY.

* DURING THE GALE WARNING...THE STRONGEST WINDS WILL BE UP TO 35
  KT FROM THE NORTHWEST. THE HIGHEST SIGNIFICANT WAVES WILL BE UP
  TO 12 FT. THERE WILL BE OCCASIONAL WAVES UP TO 16 FT.

REFER TO THE LATEST MARINE FORECASTS FOR MORE DETAILED
INFORMATION.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A HEAVY FREEZING SPRAY WARNING MEANS HEAVY FREEZING SPRAY IS
EXPECTED TO RAPIDLY ACCUMULATE ON VESSELS. THESE CONDITIONS CAN
BE EXTREMELY HAZARDOUS TO NAVIGATION. IT IS RECOMMENDED THAT
MARINERS NOT TRAINED TO OPERATE IN THESE CONDITIONS OR VESSELS
NOT PROPERLY EQUIPPED TO DO SO...REMAIN IN PORT OR AVOID THE
WARNING AREA.

A GALE WARNING MEANS WINDS OF 34 TO 47 KNOTS ARE IMMINENT OR
OCCURRING. OPERATING A VESSEL IN GALE CONDITIONS REQUIRES
EXPERIENCE AND PROPERLY EQUIPPED VESSELS. IT IS HIGHLY
RECOMMENDED THAT MARINERS WITHOUT THE PROPER EXPERIENCE SEEK SAFE
HARBOR PRIOR TO THE ONSET OF GALE CONDITIONS.

&&

$$

SHEA

808 
WHUS73 KLOT 211804
MWWLOT

URGENT - MARINE WEATHER MESSAGE
NATIONAL WEATHER SERVICE CHICAGO IL
1204 PM CST FRI JAN 21 2011

LMZ080-261-362-364-366-563-565-567-669-671-673-675-777-779-868-
870-872-874-876-878-211915-
/O.EXP.KLOT.GL.W.0045.000000T0000Z-110121T1800Z/
/O.EXP.KLOT.UP.W.0001.000000T0000Z-110121T1800Z/
LAKE MICHIGAN FROM MICHIGAN CITY IN TO ST. JOSEPH MI 5 NM
OFFSHORE TO MID LAKE-
LAKE MICHIGAN FROM SEUL CHOIX POINT TO ROCK ISLAND PASSAGE 5 NM
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 5 NM OFFSHORE-
LAKE MICHIGAN FROM CHARLEVOIX TO POINT BETSIE MI 5 NM OFFSHORE TO
MID LAKE-
LAKE MICHIGAN FROM POINT BETSIE TO MANISTEE MI 5 NM OFFSHORE TO
MID LAKE-
LAKE MICHIGAN FROM ROCK ISLAND PASSAGE TO STURGEON BAY WI-
LAKE MICHIGAN FROM STURGEON BAY TO TWO RIVERS WI 5 NM OFFSHORE TO
MID LAKE-
LAKE MICHIGAN FROM TWO RIVERS TO SHEBOYGAN WI 5 NM OFFSHORE TO
MID LAKE-
LAKE MICHIGAN FROM SHEBOYGAN TO PORT WASHINGTON WI 5 NM OFFSHORE
TO MID LAKE-
LAKE MICHIGAN FROM PORT WASHINGTON TO NORTH POINT LIGHT WI 5 NM
OFFSHORE TO MID LAKE-
LAKE MICHIGAN FROM NORTH POINT LIGHT TO WIND POINT WI 5 NM
OFFSHORE TO MID LAKE-
LAKE MICHIGAN FROM WIND POINT WI TO WINTHROP HARBOR IL 5 NM
OFFSHORE TO MID LAKE-
LAKE MICHIGAN FROM WINTHROP HARBOR TO WILMETTE HARBOR IL 5 NM
OFFSHORE TO MID LAKE-
LAKE MICHIGAN FROM WILMETTE HARBOR IL TO MICHIGAN CITY IN 5 NM
OFFSHORE TO MID LAKE-
LAKE MICHIGAN FROM PENTWATER TO MANISTEE MI 5 NM OFFSHORE TO MID
LAKE-
LAKE MICHIGAN FROM WHITEHALL TO PENTWATER MI 5 NM OFFSHORE TO MID
LAKE-
LAKE MICHIGAN FROM GRAND HAVEN TO WHITEHALL MI 5 NM OFFSHORE TO
MID LAKE-
LAKE MICHIGAN FROM HOLLAND TO GRAND HAVEN MI 5 NM OFFSHORE TO MID
LAKE-
LAKE MICHIGAN FROM SOUTH HAVEN TO HOLLAND MI 5 NM OFFSHORE TO MID
LAKE-
LAKE MICHIGAN FROM ST. JOSEPH TO SOUTH HAVEN MI 5 NM OFFSHORE TO
MID LAKE-
1204 PM CST FRI JAN 21 2011

...GALE WARNING HAS EXPIRED...
...HEAVY FREEZING SPRAY WARNING HAS EXPIRED...

THE HEAVY FREEZING SPRAY WARNING IS NO LONGER IN EFFECT. THE GALE
WARNING IS NO LONGER IN EFFECT. 

$$

LMZ743>745-220215-
/O.EXP.KLOT.UP.W.0001.000000T0000Z-110121T1800Z/
/O.CON.KLOT.SC.Y.0009.000000T0000Z-110122T0300Z/
CALUMET HARBOR TO GARY-GARY TO BURNS HARBOR-
BURNS HARBOR TO MICHIGAN CITY-
1204 PM CST FRI JAN 21 2011

...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 9 PM CST THIS
EVENING...
...HEAVY FREEZING SPRAY WARNING HAS EXPIRED...

THE HEAVY FREEZING SPRAY WARNING IS NO LONGER IN EFFECT. A SMALL
CRAFT ADVISORY REMAINS IN EFFECT UNTIL 9 PM CST THIS EVENING. 

* EXPECT HAZARDOUS CONDITIONS FOR SMALL CRAFT UNTIL 9 PM CST 
  THIS EVENING.

* DURING THE SMALL CRAFT ADVISORY...THE STRONGEST WINDS WILL BE UP
  TO 25 KT FROM THE WEST. THE HIGHEST SIGNIFICANT WAVES WILL BE UP
  TO 5 FT. THERE WILL BE OCCASIONAL WAVES UP TO 7 FT.

REFER TO THE LATEST MARINE FORECASTS FOR MORE DETAILED
INFORMATION.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A SMALL CRAFT ADVISORY MEANS THAT WINDS OF 22 TO 33 KNOTS AND/OR
WAVES GREATER THAN 4 FT WILL PRODUCE HAZARDOUS WAVE CONDITIONS
FOR SMALL CRAFT. INEXPERIENCED MARINERS...ESPECIALLY THOSE
OPERATING SMALLER VESSELS SHOULD AVOID NAVIGATING IN THESE
CONDITIONS.

&&

$$

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE CHICAGO/ROMEOVILLE IL
251 AM CST THU JAN 20 2011

.DISCUSSION...
816 PM CST

ANTI-CYCLONIC FLOW REMAINS OVERHEAD THIS EVENING...CENTERED WEST
OF THE REGION ACROSS THE DAKOTAS. THIS WILL CONTINUE TO PROVIDE
DRY WX FOR AT LEAST THE NORTHERN THIRD OF THE CWFA. IR IMAGERY
SHOWS CONSIDERABLE CLOUD COVER SLIDING NORTHEAST AHEAD OF A WEAK
WAVE OVER THE MISSOURI VALLEY. MUCH OF THE CLOUD COVER FOR
NORTHERN ILLINOIS IS ABOVE 10KFT AGL...AS THE BNDRY LYR REMAINS
VERY DRY FROM EARLIER SUBSIDENCE TODAY. UNDER THE THICKER CLOUD
COVER AND DEEPER MOISTURE IN CENTRAL MISSOURI...LGT SN HAS
DEVELOPED AND WILL CONTINUE TO APPROACH THE SOUTHERN PORTIONS OF
THE CWFA OVERNIGHT. LATEST GUIDANCE HAS CONTINUED TO TREND FURTHER
SOUTH WITH THE PATH OF THIS LGT SN OVERNIGHT...HOWEVER MAY STILL
PUSH ALONG AND SOUTH OF A LINE FROM LIVINGSTON TO KANKAKEE TO
JASPER COUNTIES. TIMING STILL LOOKS GOOD FOR WELL AFT
MIDNIGHT...OR CLOSER TO 09Z. TOTAL PRECIP BY DAYBREAK ALONG AND
SOUTH OF THIS LINE WILL GENERALLY BE LESS THAN ONE HALF INCH.
HOWEVER IF THE LATEST MODEL GUIDANCE VERIFIES WITH A FURTHER SOUTH
TRACK...SN TOTALS WILL BE MUCH LESS IF ANY ACCUMS AT ALL THRU
DAYBREAK.

LLVL FLOW WILL REMAIN NORTHWESTERLY THRU THE REMAINDER OF THE
OVERNIGHT PERIOD AS THE ARCTIC AIR MASS CONTINUES TO APPROACH FROM
THE NW. 500MB TROUGH AXIS CONTINUES TO STRENGTHEN EARLY THUR WITH
FRONTAL PASSAGE EXPECTED SOMETIME THUR AFTN.

TEMPS OVERNIGHT STILL LOOK TO BE IN GOOD SHAPE...HAVE MADE
COSMETIC ADJUSTMENTS TO THE FAR NW COUNTIES.

BEACHLER

//PREV DISCUSSION...
322 PM CST

A VERY ACTIVE WINTER WEATHER PATTERN WILL CONTINUE FOR THE NEXT
SEVERAL DAYS.

HOWEVER...FOR THE REMAINDER OF THE AFTERNOON AND INTO THE
EVENING...CONDITIONS WILL BE RATHER QUIET AS SKIES CLEAR OVER
NORTHERN ILLINOIS.  NORTHWESTERN INDIANA LOCATIONS SHOULD SEE SOME
LAKE EFFECT CLOUDINESS INTO THE EVENING...BUT AS FLOW BECOMES MORE
WESTERLY WITH A RIDGE OF HIGH PRESSURE BUILDING INTO CENTRAL
ILLINOIS AND INDIANA...THE LAKE EFFECT CLOUDINESS WILL DISSIPATE
THERE AS WELL.  CLEARING SKIES AND DECREASING WINDS WILL ALLOW
TEMPERATURES TO DROP INTO THE SINGLE DIGITS FOR THE NORTHWESTERN
PORTIONS OF THE CWA...WHILE THE ERN AND SERN LOCATIONS REMAIN A
LITTLE WARMER...ONLY DROPPING INTO THE MIDDLE TO UPPER TEENS.

THE NEXT FEATURE OF CONCERN WILL BE A MODEST SHORTWAVE DROPPING INTO
THE NORTHERN PLAINS THIS AFTERNOON.  THE LATEST MODEL RUNS ARE
REASONABLY CONSISTENT WITH RECENT RUNS IN TAKING THE STRONGEST
FORCING INTO CENTRAL AND SOUTHERN ILLINOIS.  THE MODELS MAINTAIN THE
MAIN LOW LEVEL BAROCLINIC ZONE OVER THE LOWER OHIO VALLEY.
SO...EXPECT THE HEAVIEST SNOW WITH THIS SYSTEM TO REMAIN WELL SOUTH
OF THE LOCAL CWA...BUT SOME SNOW SHOULD SPREAD NORTH OF THE BOUNDARY
INTO CENTRAL ILLINOIS AND THE SOUTHERN PORTIONS OF THE LOCAL AREA.
DO NOT EXPECT ANY ACCUMULATING SNOW NORTH OF THE ILLINOIS AND
KANKAKEE RIVER VALLEYS.  WITH VERY LIMITED MOISTURE AVAILABLE...ONLY
EXPECT ACCUMULATIONS OF 0.5 TO 1.5 INCHES OVER THE SOUTHERN COUNTIES
WITH THE AMOUNTS IN EXCESS OF ONE INCH SOUTH OF A PONTIAC TO
RENSSELAER LINE.

OF GREATER CONCERN WILL BE A SIGNIFICANT SHOT OF COLD AIR EXPECTED
TO OVERSPREAD THE REGION BY LATE THURSDAY AFTERNOON OR EARLY
THURSDAY EVENING.  THE MODELS ARE TRENDING A LITTLE COOLER
AGAIN...INDICATING -19 TO -21C OVER NORTHERN ILLINOIS BY LATE
THURSDAY NIGHT.  THE ENTIRE AREA SHOULD SEE OVERNIGHT LOW
TEMPERATURES DROPPING TO NEAR OF BELOW 0F...WITH THE LOWEST
TEMPERATURES OF -5 TO -9F OVER THE NORTHWESTERN COUNTIES.  THE
OHARE AIRPORT AREA WILL LIKELY SEE IT'S FIRST SUBZERO TEMPERATURES
AND EVEN DOWNTOWN CHICAGO MAY DROP TO ZERO.

FORTUNATELY...THE PATTERN WILL BE VERY PROGRESSIVE AND THE ARCTIC
WILL WILL MOVE OUT QUICKLY.  BY THURSDAY AFTERNOON...THE SFC RIDGE
WILL PUSH OFF TO THE EAST...TO BE REPLACES BY ANOTHER CLIPPER-TYPE
SYSTEM.  WHILE TEMPERATURES WILL REMAIN RATHER COOL FOR FRIDAY AND
FRIDAY NIGHT...WINDS WILL QUICKLY DROP OFF BY FRIDAY MORNING...AND
THE POTENTIAL FOR EXTREME WINDS CHILLS WILL DIMINISH.

BY THE WEEKEND...TEMPERATURES WILL REBOUND TO NEAR SEASONAL NORMAL
LEVELS AS A THE NEXT IN THE SERIES OF SHORT WAVES TRACKS TO THE
EAST.  THIS SYSTEM WILL BRING THE POTENTIAL FOR ANOTHER QUICK SHOT
OF LIGHT SNOW FOR FRIDAY AND SATURDAY AND ANOTHER WILL BRING A
CHANCE FOR SOME MORE LIGHT SNOW BY EARLY NEXT WEEK.  WITH LITTLE
MOISTURE AVAILABLE TO THESE NORTHERN STREAM SYSTEMS...ONLY LIGHT
ACCUMULATIONS ARE LIKELY.

KREIN

&&

.AVIATION...

//ORD AND MDW CONCERNS...UPDATED 08Z...

* WEST WINDS BECOMING SOUTHWEST AND INCREASING AFTER 14Z.

* COLD FRONT CROSSING THE TERMINALS LATE AFTERNOON/EARLY EVENING
  THURSDAY BRINGING A SHIFT TO NORTHWEST WINDS WITH GUSTS OF
  AROUND 25 KT DEVELOPING BEHIND IT.

* POSSIBLE MVFR CIGS ASSOCIATED WITH COLD FRONTAL PASSAGE.

MDB

//DISCUSSION...UPDATED 06Z...

SURFACE HIGH PRESSURE REMAINS OVER THE AREA TONIGHT WITH WEST TO
NORTHWEST WINDS SLACKENING TO LIGHT AND VARIABLE IN MANY LOCATIONS.
VFR CONDITIONS PREVAIL WITH ABUNDANT MID AND HIGH LEVEL CLOUDS
WHICH WILL LOWER SOMEWHAT THROUGH THURSDAY MORNING/AFTERNOON AS AN
UPPER LEVEL TROUGH APPROACHES AND A SFC LOW PASSES TO THE NORTH.
EXPECT VFR THROUGH MOST OF THE DAY WITH POTENTIAL FOR MVFR CIGS
FROM LATE AFTERNOON INTO THE EVENING WITH THE PASSAGE OF A COLD
FRONT. THE PRESENCE OF HIGH PRESSURE AT THE SURFACE AND A FAIRLY
DRY LOW LEVEL AIRMASS SHOULD PRECLUDE SNOW FROM FALLING DESPITE
UPWARD ASCENT ALOFT. THIS WILL PROBABLY RESULT IN VIRGA AND
FLURRIES WITH SNOW REMAINING TO THE NORTH AND SOUTH OF THE
TERMINALS. WILL NEED TO KEEP AN EYE ON AREAS TOWARDS RFD WHICH
COULD SEE SOME LIGHT SNOW DEVELOP WITH THE FRONTAL PASSAGE.
FRONTAL PASSAGE WILL OCCUR DURING THE LATE AFTERNOON AND EARLY
EVENING. WINDS WILL BECOME SOUTHWESTERLY DURING THE MORNING THEN
TURN WEST THEN NORTHWEST WITH THE FRONTAL PASSAGE. SPEEDS WILL
ALSO INCREASE BEHIND THE FRONT WITH GUSTS OF 25 OR PERHAPS 30 KT
EXPECTED DURING THE EVENING. MAY SEE A PERIOD OF MVFR STRATO CU
WITH THE FRONTAL PASSAGE WHICH COULD BECOME BROKEN AT TIMES AND
LINGER INTO THE EVENING. WILL KEEP SCATTERED MENTION FOR NOW WITH
CONFIDENCE LOW AND LIKELIHOOD OF AN MVFR CEILING BEING SHORT LIVED.

MDB

//ORD AND MDW CONFIDENCE...UPDATED 08Z...

* HIGH CONFIDENCE IN ALL ELEMENTS THROUGH MID AFTERNOON.

* MEDIUM CONFIDENCE IN EXACT TIMING OF COLD FRONTAL PASSAGE LATE
  AFTERNOON/EARLY EVENING THURSDAY.

* LOW CONFIDENCE IN DEVELOPMENT OF MVFR CIGS WITH FRONTAL PASSAGE
  WITH POTENTIAL FOR CIGS TO LINGER INTO FRIDAY MORNING.

MDB

//OUTLOOK FOR ORD/MDW FOR 12Z FRIDAY-12Z TUESDAY...UPDATED 06Z...

FRIDAY...SLIGHT CHANCE OF SNOW LATE WITH MVFR POSSIBLE.

SATURDAY...SLIGHT CHANCE OF SNOW EARLY WITH MVFR POSSIBLE.

SUNDAY...VFR.

MONDAY...SLIGHT CHANCE OF SNOW WITH MVFR POSSIBLE.

TUESDAY...SLIGHT CHANCE OF SNOW LATE WITH MVFR POSSIBLE.

MDB

&&

.MARINE...
246 AM CST

...THE MAIN CONCERNS WILL BE THE POTENTIAL FOR GALE FORCE WINDS AND
HEAVY FREEZING SPRAY ACROSS THE THE LAKE LATER TODAY INTO
FRIDAY...

A ROBUST PUSH OF ARCTIC AIR WILL OCCUR THIS AFTERNOON AND TONIGHT AS
A COLD FRONT PUSHES ACROSS THE LAKE. AT THE SAME TIME...ARCTIC HIGH
PRESSURE...EMANATING FROM NORTHERN CANADA...WILL BUILD ACROSS THE
NORTHERN PLAINS IN THE WAKE OF THIS FRONT. THIS WILL PRODUCE A
GOOD PRESSURE GRADIENT...WHICH WILL SUPPORT GALE FORCE WINDS
ACROSS THE LAKE. ALTHOUGH THE MEAN BOUNDARY LAYER WINDS SUGGEST
WINDS WILL REMAIN IN THE 30 TO 35 KT RANGE...SURFACE GEOSTROPHIC
WINDS ARE FORECAST TO BE IN EXCESS OF 45 KT ACROSS THE LAKE.
ADDITIONALLY...850 MB TEMPERATURES ARE FORECAST TO DROP ABOUT 7
DEGREES CELSIUS WITHIN A 6 HOUR PERIOD. WITH THIS STRONG PUSH OF
COLD AIR...I WOULD NOT BE SURPRISED TO SEE 40 KT
GALES...ESPECIALLY OVER THE OPEN WATERS LATE THIS AFTERNOON AND
EVENING. THEREFORE...A GALE WARNING WILL BE ISSUED FROM 21 UTC
THIS AFTERNOON THROUGH 18 UTC ON FRIDAY. THE WINDS WILL QUICKLY
ABATE DURING THE DAY ON FRIDAY AS A SURFACE RIDGE OF HIGH PRESSURE
BUILDS IN ACROSS THE GREAT LAKES.

WITH THE COLD ARCTIC AIR COMBINED WITH THE GALE FORCE WINDS WE WILL
ALSO BE HOSTING A HEAVY FREEZING SPRAY WARNING FOR THE SAME TIME
PERIOD.

KJB

&&

.LOT WATCHES/WARNINGS/ADVISORIES...
IL...WIND CHILL ADVISORY...ILZ003-ILZ004-ILZ005-ILZ006-ILZ008-ILZ010-
     ILZ011-ILZ012-ILZ013-ILZ014-ILZ019-ILZ020-ILZ021-ILZ022-
     ILZ023-ILZ032-ILZ033-ILZ039...9 PM THURSDAY TO 11 AM FRIDAY.

IN...WIND CHILL ADVISORY...INZ001-INZ002-INZ010-INZ011-INZ019...9 PM
     THURSDAY TO 11 AM FRIDAY.

LM...GALE WARNING...LMZ080-LMZ261-LMZ362-LMZ364-LMZ366-LMZ563-LMZ565-
     LMZ567-LMZ669-LMZ671-LMZ673-LMZ675-LMZ740-LMZ741-LMZ742-
     LMZ743-LMZ744-LMZ745-LMZ777-LMZ779-LMZ868-LMZ870-LMZ872-
     LMZ874-LMZ876-LMZ878...3 PM THURSDAY TO NOON FRIDAY.

     HEAVY FREEZING SPRAY WARNING...LMZ080-LMZ261-LMZ362-LMZ364-
     LMZ366-LMZ563-LMZ565-LMZ567-LMZ669-LMZ671-LMZ673-LMZ675-
     LMZ740-LMZ741-LMZ742-LMZ743-LMZ744-LMZ745-LMZ777-LMZ779-
     LMZ868-LMZ870-LMZ872-LMZ874-LMZ876-LMZ878...3 PM THURSDAY
     TO NOON FRIDAY.

&&

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE CHICAGO/ROMEOVILLE IL
345 PM CST WED JAN 19 2011

ILZ003>006-008-010>014-019>023-032-033-039-INZ001-002-010-011-019-
202145-
WINNEBAGO-BOONE-MCHENRY-LAKE ILLINOIS-OGLE-LEE-DE KALB-KANE-
DUPAGE-COOK-LA SALLE-KENDALL-GRUNDY-WILL-KANKAKEE-LIVINGSTON-
IROQUOIS-FORD-LAKE INDIANA-PORTER-NEWTON-JASPER-BENTON-
345 PM CST WED JAN 19 2011 /445 PM EST WED JAN 19 2011/

THIS HAZARDOUS WEATHER OUTLOOK IS FOR NORTH CENTRAL ILLINOIS...
NORTHEAST ILLINOIS AND NORTHWEST INDIANA.

.DAY ONE...TONIGHT.

ACCUMULATING SNOW IS POSSIBLE TONIGHT AND EARLY THURSDAY...
GENERALLY SOUTH OF THE ILLINOIS AND KANKAKEE RIVERS. PRESENT
INDICATORS SUGGEST THAT 1 TO 2 INCHES OF SNOW ARE POSSIBLE SOUTH
OF A PONTIAC TO RENSSELAER LINE. LIGHTER SNOW IS EXPECTED TO THE
NORTH OF THIS AREA.

.DAYS TWO THROUGH SEVEN...THURSDAY THROUGH TUESDAY.

VERY COLD AIR IS EXPECTED TO SETTLE ACROSS THE MIDWEST AND GREAT
LAKES REGIONS THURSDAY NIGHT AND FRIDAY. TEMPERATURES WILL LIKELY
FALL BELOW ZERO OVER MUCH OF NORTHERN ILLINOIS BY EARLY FRIDAY
MORNING. TEMPERATURES OVER CENTRAL ILLINOIS AND NORTHWESTERN
INDIANA WILL DROP INTO THE LOW SINGLE DIGITS. HIGHS ON FRIDAY ARE
EXPECTED TO BE ONLY IN THE SINGLE DIGITS IN SOME AREAS. BLUSTERY
NORTHWEST WINDS WILL PRODUCE WIND CHILLS OF 20 TO 29 BELOW ZERO BY
EARLY FRIDAY...WITH THE LOWEST WIND CHILLS OVER NORTH CENTRAL
ILLINOIS. HOWEVER...EVEN THE HIGHLY URBANIZED AREAS OF THE CHICAGO
METRO AREA SHOULD SEE WIND CHILLS APPROACHING 20 BELOW ZERO.

.SPOTTER INFORMATION STATEMENT...

SPOTTER ACTIVATION WILL NOT BE NECESSARY THROUGH TONIGHT.

&&

COMPLETE FORECAST INFORMATION IS AVAILABLE ON THE NWS CHICAGO
WEBPAGE: WEATHER.GOV/CHICAGO

LMZ740>745-202145-
WINTHROP HARBOR TO WILMETTE HARBOR-
WILMETTE HARBOR TO NORTHERLY ISLAND-
NORTHERLY ISLAND TO CALUMET HARBOR-CALUMET HARBOR TO GARY-
GARY TO BURNS HARBOR-BURNS HARBOR TO MICHIGAN CITY-
345 PM CST WED JAN 19 2011

THIS HAZARDOUS WEATHER OUTLOOK IS FOR THE ILLINOIS NEARSHORE
WATERS OF LAKE MICHIGAN AND THE INDIANA NEARSHORE WATERS OF LAKE
MICHIGAN.

.DAY ONE...TONIGHT.

NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME.

.DAYS TWO THROUGH SEVEN...THURSDAY THROUGH TUESDAY.

STRONG WINDS AND HIGH WAVES ARE EXPECTED TO PRODUCE HAZARDOUS
CONDITIONS FOR SMALL CRAFT AGAIN THURSDAY NIGHT...AND CONTINUE
THROUGH FRIDAY. IN ADDITION...THE STRONG WINDS COMBINED WITH COLD
TEMPERATURES WILL LIKELY RESULT IN FREEZING SPRAY.

&&

COMPLETE FORECAST INFORMATION IS AVAILABLE ON THE NWS CHICAGO
WEBPAGE: WEATHER.GOV/CHICAGO

LMZ080-261-362-364-366-563-565-567-669-671-673-675-777-779-868-
870-872-874-876-878-202145-
LAKE MICHIGAN FROM MICHIGAN CITY IN TO ST. JOSEPH MI 5 NM
OFFSHORE TO MID LAKE-
LAKE MICHIGAN FROM SEUL CHOIX POINT TO ROCK ISLAND PASSAGE 5 NM
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 5 NM OFFSHORE-
LAKE MICHIGAN FROM CHARLEVOIX TO POINT BETSIE MI 5 NM OFFSHORE TO
MID LAKE-
LAKE MICHIGAN FROM POINT BETSIE TO MANISTEE MI 5 NM OFFSHORE TO
MID LAKE-
LAKE MICHIGAN FROM ROCK ISLAND PASSAGE TO STURGEON BAY WI-
LAKE MICHIGAN FROM STURGEON BAY TO TWO RIVERS WI 5 NM OFFSHORE TO
MID LAKE-
LAKE MICHIGAN FROM TWO RIVERS TO SHEBOYGAN WI 5 NM OFFSHORE TO
MID LAKE-
LAKE MICHIGAN FROM SHEBOYGAN TO PORT WASHINGTON WI 5 NM OFFSHORE
TO MID LAKE-
LAKE MICHIGAN FROM PORT WASHINGTON TO NORTH POINT LIGHT WI 5 NM
OFFSHORE TO MID LAKE-
LAKE MICHIGAN FROM NORTH POINT LIGHT TO WIND POINT WI 5 NM
OFFSHORE TO MID LAKE-
LAKE MICHIGAN FROM WIND POINT WI TO WINTHROP HARBOR IL 5 NM
OFFSHORE TO MID LAKE-
LAKE MICHIGAN FROM WINTHROP HARBOR TO WILMETTE HARBOR IL 5 NM
OFFSHORE TO MID LAKE-
LAKE MICHIGAN FROM WILMETTE HARBOR IL TO MICHIGAN CITY IN 5 NM
OFFSHORE TO MID LAKE-
LAKE MICHIGAN FROM PENTWATER TO MANISTEE MI 5 NM OFFSHORE TO MID
LAKE-
LAKE MICHIGAN FROM WHITEHALL TO PENTWATER MI 5 NM OFFSHORE TO MID
LAKE-
LAKE MICHIGAN FROM GRAND HAVEN TO WHITEHALL MI 5 NM OFFSHORE TO
MID LAKE-
LAKE MICHIGAN FROM HOLLAND TO GRAND HAVEN MI 5 NM OFFSHORE TO MID
LAKE-
LAKE MICHIGAN FROM SOUTH HAVEN TO HOLLAND MI 5 NM OFFSHORE TO MID
LAKE-
LAKE MICHIGAN FROM ST. JOSEPH TO SOUTH HAVEN MI 5 NM OFFSHORE TO
MID LAKE-
345 PM CST WED JAN 19 2011

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...THURSDAY THROUGH TUESDAY.

NORTHWEST GALE FORCE WINDS ARE POSSIBLE THURSDAY NIGHT INTO
FRIDAY...AND WILL LIKELY COMBINE WITH LOW TEMPERATURES TO PRODUCE
SIGNIFICANT FREEZING SPRAY.

&&

COMPLETE FORECAST INFORMATION IS AVAILABLE ON THE NWS CHICAGO
WEBPAGE: WEATHER.GOV/CHICAGO

KREIN