Gale Warning 26, NWS Chicago, IL

753 
WHUS73 KLOT 192331
MWWLOT

URGENT - MARINE WEATHER MESSAGE
NATIONAL WEATHER SERVICE CHICAGO IL
631 PM CDT THU APR 19 2012

LMZ740>742-200745-
/O.NEW.KLOT.SC.Y.0047.120419T2331Z-120420T0600Z/
/O.CON.KLOT.GL.W.0026.120420T0900Z-120421T0300Z/
WINTHROP HARBOR TO WILMETTE HARBOR-
WILMETTE HARBOR TO NORTHERLY ISLAND-
NORTHERLY ISLAND TO CALUMET HARBOR-
631 PM CDT THU APR 19 2012

...SMALL CRAFT ADVISORY IN EFFECT UNTIL 1 AM CDT FRIDAY...
...GALE WARNING REMAINS IN EFFECT FROM 4 AM TO 10 PM CDT FRIDAY...

THE NATIONAL WEATHER SERVICE IN CHICAGO HAS ISSUED A SMALL CRAFT
ADVISORY...WHICH IS IN EFFECT UNTIL 1 AM CDT FRIDAY. 

* WINDS...NORTHEAST WINDS TO 30 KT THIS EVENING INCREASING TO 35
  KT GALES LATE TONIGHT.

* WAVES...4 TO 6 FT THIS EVENING BUILDING TO 6 TO 9 FT FRIDAY AND
  7 TO 10 FT FRIDAY EVENING. OCCASIONAL WAVES TO 16 FT BY FRIDAY
  EVENING. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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.

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.

&&

$$

LMZ261-362-364-366-563-565-567-868-200745-
/O.CON.KLOT.GL.W.0026.120420T0600Z-120420T2100Z/
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 PENTWATER TO MANISTEE MI 5 NM OFFSHORE TO MID
LAKE-
631 PM CDT THU APR 19 2012

...GALE WARNING REMAINS IN EFFECT FROM 1 AM TO 4 PM CDT FRIDAY...

* WINDS...NORTH TO 35 KT.

* WAVES...7 TO 10 FT. OCCASIONAL WAVES TO 14 FT.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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.

&&

$$

LMZ080-669-671-673-675-743>745-777-779-870-872-874-876-878-200745-
/O.CON.KLOT.GL.W.0026.120420T0900Z-120421T0300Z/
LAKE MICHIGAN FROM MICHIGAN CITY IN TO ST. JOSEPH MI 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 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-
631 PM CDT THU APR 19 2012

...GALE WARNING REMAINS IN EFFECT FROM 4 AM TO 10 PM CDT FRIDAY...

* WINDS...NORTH TO 35 KT.

* WAVES...8 TO 12 FT. OCCASIONAL WAVES TO 16 FT.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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.

&&

$$

MDB

245 
WHUS73 KLOT 200318
MWWLOT

URGENT - MARINE WEATHER MESSAGE
NATIONAL WEATHER SERVICE CHICAGO IL
1018 PM CDT THU APR 19 2012

LMZ740>742-201130-
/O.EXT.KLOT.SC.Y.0047.000000T0000Z-120420T0900Z/
/O.CON.KLOT.GL.W.0026.120420T0900Z-120421T0300Z/
WINTHROP HARBOR TO WILMETTE HARBOR-
WILMETTE HARBOR TO NORTHERLY ISLAND-
NORTHERLY ISLAND TO CALUMET HARBOR-
1018 PM CDT THU APR 19 2012

...SMALL CRAFT ADVISORY NOW IN EFFECT UNTIL 4 AM CDT FRIDAY...
...GALE WARNING REMAINS IN EFFECT FROM 4 AM TO 10 PM CDT FRIDAY...

* WINDS...INCREASING TO 35 KT GALES TOWARD DAYBREAK FRIDAY
  MORNING. 

* WAVES...5 TO 8 FT THIS EVENING SUBSIDING TO 4 TO 6 FT
  OVERNIGHT...THEN  BUILDING TO 6 TO 9 FT FRIDAY AND TO 7 TO 10 FT
  FRIDAY EVENING. OCCASIONAL WAVES TO 16 FT BY FRIDAY EVENING.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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.

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.

&&

$$

LMZ261-362-364-366-563-565-567-868-201130-
/O.CON.KLOT.GL.W.0026.120420T0600Z-120420T2100Z/
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 PENTWATER TO MANISTEE MI 5 NM OFFSHORE TO MID
LAKE-
1018 PM CDT THU APR 19 2012

...GALE WARNING REMAINS IN EFFECT UNTIL 4 PM CDT FRIDAY...

* WINDS...NORTH TO 35 KT...WITH GUSTS TO 40 KT POSSIBLE.

* WAVES...8 TO 12 FT. OCCASIONAL WAVES TO 18 FT.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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.

&&

$$

LMZ080-669-671-673-675-743>745-777-779-870-872-874-876-878-201130-
/O.CON.KLOT.GL.W.0026.120420T0900Z-120421T0300Z/
LAKE MICHIGAN FROM MICHIGAN CITY IN TO ST. JOSEPH MI 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 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-
1018 PM CDT THU APR 19 2012

...GALE WARNING REMAINS IN EFFECT FROM 4 AM TO 10 PM CDT FRIDAY...

* WINDS...NORTH TO 35 KT WITH GUSTS TO 40 KT POSSIBLE.

* WAVES...8 TO 12 FT. OCCASIONAL WAVES TO 18 FT.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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.

&&

$$

MDB

445 
WHUS73 KLOT 200759
MWWLOT

URGENT - MARINE WEATHER MESSAGE
NATIONAL WEATHER SERVICE CHICAGO IL
259 AM CDT FRI APR 20 2012

LMZ740>742-201600-
/O.EXT.KLOT.SC.Y.0047.000000T0000Z-120420T1500Z/
/O.EXT.KLOT.GL.W.0026.120420T1500Z-120421T0300Z/
WINTHROP HARBOR TO WILMETTE HARBOR-
WILMETTE HARBOR TO NORTHERLY ISLAND-
NORTHERLY ISLAND TO CALUMET HARBOR-
259 AM CDT FRI APR 20 2012

...SMALL CRAFT ADVISORY NOW IN EFFECT UNTIL 10 AM CDT THIS
MORNING...
...GALE WARNING NOW IN EFFECT FROM 10 AM THIS MORNING TO 10 PM
CDT THIS EVENING...

* WINDS...INCREASING TO 35 KT GALES BY MID MORNING.

* WAVES...4 TO 7 FT EARLY THIS MORNING BUILDING TO 7 TO 10 FT BY
  LATE AFTERNOON. OCCASIONAL WAVES TO 15 FT THIS EVENING.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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.

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.

&&

$$

LMZ261-362-364-366-563-565-567-868-201600-
/O.EXT.KLOT.GL.W.0026.000000T0000Z-120421T0000Z/
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 PENTWATER TO MANISTEE MI 5 NM OFFSHORE TO MID
LAKE-
259 AM CDT FRI APR 20 2012

...GALE WARNING NOW IN EFFECT UNTIL 7 PM CDT THIS EVENING...

* WINDS...NORTHEAST TO 35 KT BECOMING NORTH BY LATE MORNING. GUSTS
  TO 40 KT POSSIBLE.

* WAVES...9 TO 13 FT. OCCASIONAL WAVES TO 19 FT.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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.

&&

$$

LMZ080-669-671-673-675-777-779-870-872-874-876-878-201600-
/O.EXT.KLOT.GL.W.0026.120420T1400Z-120421T0300Z/
LAKE MICHIGAN FROM MICHIGAN CITY IN TO ST. JOSEPH MI 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 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-
259 AM CDT FRI APR 20 2012

...GALE WARNING NOW IN EFFECT FROM 9 AM THIS MORNING TO 10 PM CDT
THIS EVENING...

* WINDS...NORTH TO 40 KT LATE THIS MORNING AND AFTERNOON.

* WAVES...10 TO 14 FT LATE THIS MORNING AND AFTERNOON. OCCASIONAL
  WAVES TO 21 FT.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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.

&&

$$

LMZ743>745-201600-
/O.EXT.KLOT.GL.W.0026.120420T1500Z-120421T0300Z/
CALUMET HARBOR TO GARY-GARY TO BURNS HARBOR-
BURNS HARBOR TO MICHIGAN CITY-
259 AM CDT FRI APR 20 2012

...GALE WARNING NOW IN EFFECT FROM 10 AM THIS MORNING TO 10 PM
CDT THIS EVENING...

* WINDS...NORTH TO 35 KT.

* WAVES...4 TO 7 FT LATE THIS MORNING AND EARLY THIS AFTERNOON
  BUILDING TO 8 TO 12 FT LATE THIS AFTERNOON AND EVENING.
  OCCASIONAL WAVES TO 18 FT.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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.

&&

$$

MTF

453 
WHUS73 KLOT 201504
MWWLOT

URGENT - MARINE WEATHER MESSAGE
NATIONAL WEATHER SERVICE CHICAGO IL
1004 AM CDT FRI APR 20 2012

LMZ740>742-202315-
/O.EXP.KLOT.SC.Y.0047.000000T0000Z-120420T1500Z/
/O.CON.KLOT.GL.W.0026.000000T0000Z-120421T0300Z/
WINTHROP HARBOR TO WILMETTE HARBOR-
WILMETTE HARBOR TO NORTHERLY ISLAND-
NORTHERLY ISLAND TO CALUMET HARBOR-
1004 AM CDT FRI APR 20 2012

...GALE WARNING REMAINS IN EFFECT UNTIL 10 PM CDT THIS EVENING...
...SMALL CRAFT ADVISORY HAS EXPIRED...

* WINDS...NORTH GALES TO 35 KT.

* WAVES...BUILDING TO 8 TO 12 FT WITH OCCASIONAL WAVES TO 16 FT
  THIS EVENING.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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.

&&

$$

LMZ261-362-364-366-563-565-567-868-202315-
/O.CON.KLOT.GL.W.0026.000000T0000Z-120421T0000Z/
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 PENTWATER TO MANISTEE MI 5 NM OFFSHORE TO MID
LAKE-
1004 AM CDT FRI APR 20 2012

...GALE WARNING REMAINS IN EFFECT UNTIL 7 PM CDT THIS EVENING...

* WINDS...NORTHEAST TO 35 KT BECOMING NORTH BY LATE MORNING.
  GUSTS TO 40 KT POSSIBLE.

* WAVES...BUILDING TO 9 TO 13 FT WITH OCCASIONAL WAVES TO 19 FT.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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.

&&

$$

LMZ080-669-671-673-675-743>745-777-779-870-872-874-876-878-202315-
/O.CON.KLOT.GL.W.0026.000000T0000Z-120421T0300Z/
LAKE MICHIGAN FROM MICHIGAN CITY IN TO ST. JOSEPH MI 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 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-
1004 AM CDT FRI APR 20 2012

...GALE WARNING REMAINS IN EFFECT UNTIL 10 PM CDT THIS EVENING...

* WINDS...NORTH TO 40 KT.

* WAVES...BUILDING TO 10 TO 14 FT WITH OCCASIONAL WAVES TO 20 FT.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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.

&&

$$

IZZI

419 
WHUS73 KLOT 201942
MWWLOT

URGENT - MARINE WEATHER MESSAGE
NATIONAL WEATHER SERVICE CHICAGO IL
242 PM CDT FRI APR 20 2012

LMZ261-362-364-366-563-565-567-868-202045-
/O.CAN.KLOT.GL.W.0026.000000T0000Z-120421T0000Z/
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 PENTWATER TO MANISTEE MI 5 NM OFFSHORE TO MID
LAKE-
242 PM CDT FRI APR 20 2012

...GALE WARNING IS CANCELLED...

THE NATIONAL WEATHER SERVICE IN CHICAGO HAS CANCELLED THE GALE
WARNING. 

$$

LMZ080-669-671-673-675-740>745-777-779-870-872-874-876-878-210300-
/O.CON.KLOT.GL.W.0026.000000T0000Z-120421T0300Z/
LAKE MICHIGAN FROM MICHIGAN CITY IN TO ST. JOSEPH MI 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 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-
242 PM CDT FRI APR 20 2012

...GALE WARNING REMAINS IN EFFECT UNTIL 10 PM CDT THIS EVENING...

* WINDS...NORTH TO 35 KT.

* WAVES...BUILDING TO 10 TO 14 FT WITH OCCASIONAL WAVES TO 20 FT
  SLOWLY SUBSIDING OVERNIGHT.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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.

&&

$$

IZZI

802 
WHUS73 KLOT 210317
MWWLOT

URGENT - MARINE WEATHER MESSAGE
NATIONAL WEATHER SERVICE CHICAGO IL
1017 PM CDT FRI APR 20 2012


LMZ740>745-210600-
/O.EXP.KLOT.GL.W.0026.000000T0000Z-120421T0300Z/
/O.NEW.KLOT.GL.W.0027.120421T0317Z-120421T0600Z/
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-
1017 PM CDT FRI APR 20 2012

...GALE WARNING IN EFFECT UNTIL 1 AM CDT SATURDAY...
...GALE WARNING HAS EXPIRED...

THE NATIONAL WEATHER SERVICE IN CHICAGO HAS ISSUED A GALE
WARNING...WHICH IS IN EFFECT UNTIL 1 AM CDT SATURDAY. 

* WINDS...NORTH TO 35 KT.

* WAVES...8 TO 12 FT WITH OCCASIONAL WAVES TO 18 FT SLOWLY SUBSIDING
  OVERNIGHT.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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.

&&

$$

LMZ080-669-671-673-675-777-779-870-872-874-876-878-210430-
/O.EXP.KLOT.GL.W.0026.000000T0000Z-120421T0300Z/
LAKE MICHIGAN FROM MICHIGAN CITY IN TO ST. JOSEPH MI 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 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-
1017 PM CDT FRI APR 20 2012

...GALE WARNING HAS EXPIRED...

WINDS HAVE DIMINISHED BELOW GALE FORCE OVER THE OPEN WATERS OF
LAKE MICHIGAN.

$$

KREIN

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE CHICAGO/ROMEOVILLE IL
249 PM CDT THU APR 19 2012

.DISCUSSION...
241 PM CDT

MAIN CONCERNS FOR FORECAST PACKAGE WILL BE DEALING WITH LOW PRESSURE
SYSTEM MOVING ACROSS THE REGION TODAY AND TONIGHT.

REST OF TODAY AND TONIGHT...WARM FRONT STRETCHES ACROSS NORTHERN
ILLINOIS THIS AFTERNOON. THE FRONTAL BOUNDARY SHOWS UP WELL ON
RADAR WITH STARK TEMPERATURE/WIND CONTRAST ACROSS THE
BOUNDARY...WHICH LIES ALMOST DIRECTLY OVER THE NWS OFFICE IN
ROMEOVILLE. AS OF 19Z OB...KLOT REPORTS AN EAST WINDS WITH A
TEMPERATURE OF 67 WHILE KJOT LESS THAN 10 MILES TO THE SOUTHWEST
HAS GUSTY SOUTHERLY WINDS WITH A TEMPERATURE OF 76. THIS CONTRAST
IS FURTHER ILLUSTRATED BY TEMPERATURES ACROSS THE SOUTHERN CWA IN
THE UPPER 70S...PONTIAC EVEN REACHING 81 THIS AFTERNOON...VS
TEMPERATURES IN THE NORTH IN THE LOW 50S...AND EVEN 40S ALONG THE
LAKE SHORE. THE FRONT WILL GRADUALLY LIFT NORTHWARD INTO WISCONSIN
THIS EVENING. MEANWHILE...H5 TROUGH WILL BEGIN TO DIG ACROSS THE
CENTRAL PLAINS WITH SURFACE LOW BECOMING BETTER ORGANIZED ACROSS
THE MID MISSISSIPPI VALLEY. BEST FOCUSED ISENTROPIC ASCENT AHEAD
OF THE LOW WILL SET UP JUST NORTH OF THE CWA...THUS HAVE DECREASED
POPS ACROSS THE SOUTHERN HALF OF THE CWA THIS EVENING TO KEEP
THOSE AREAS DRY. PRECIP CHANCES WILL INCREASE FROM THE WEST LATER
THIS EVENING AS SURFACE COLD FRONT BEGINS TO PUSH SOUTHEAST ACROSS
THE CWA. PWATS IN EXCESS OF AN INCH ARE EXPECTED ALONG THE FRONTAL
BOUNDARY...BUT MOISTURE REMAINS IN CLOSE PROXIMITY TO THE FRONT.
BETTER UPPER LEVEL SUPPORT ASSOCIATED WITH THE H5 WAVE AND WEAK
COUPLED JETS WILL REMAIN NORTH OF THE CWA WHILE VERY MODEST
INSTABILITY SPANS THE FRONTAL BOUNDARY. MUCAPE VALUES OF A FEW
HUNDRED J/KG ARE POSSIBLE ALONG THE FRONT AND WILL SUPPORT A
THREAT FOR THUNDERSTORMS. ALL SAID...EXPECT PRECIP THREAT TO
REMAIN TIED CLOSELY TO THE FORCING ALONG THE FRONT AS THE CWA
FALLS IN BETWEEN THE BETTER UPPER LEVEL SUPPORT TO THE NORTH AND
BETTER INSTABILITY TO THE SOUTH.

FOR FRIDAY...MODELS CONTINUE TO TREND SOMEWHAT FASTER WITH THE
POSITION OF THE FRONT AND SHOULD SEE MOST PRECIP OUT OF THE CWA BY
EARLY TO MID AFTERNOON. HIGH PRESSURE BEGINS TO BUILD IN FROM THE
NORTH WITH COLD AIR ALSO DROPPING SOUTH. H85 TEMPS ARE EXPECTED TO
FALL BELOW 0C FRIDAY EVENING. EXPECT SKIES TO CLEAR FRIDAY NIGHT
SETTING STAGE FOR STRONG RADIATIONAL COOLING. TEMPERATURES ARE
EXPECTED TO FALL NEAR FREEZING WEST OF THE FOX RIVER VALLEY FRIDAY
NIGHT. WILL HAVE TO MONITOR FROST POTENTIAL FOR FRIDAY NIGHT.

THIS WEEKEND...UNCERTAINTY BEGINS TO BUILD INTO THE FORECAST
BEGINNING THIS WEEKEND. UPPER LEVEL RIDGE AMPLIFIES OVER THE WESTERN
CONUS LEAVING THE UPPER MIDWEST IN NORTHWEST FLOW. MODELS TRY TO
DEVELOP PRECIP AHEAD OF SHEARED VORT MAX RIDING DOWN THE RIDGE
SATURDAY AND SUNDAY. FORECAST SOUNDINGS OVER NORTHERN ILLINOIS
INDICATE A DEEP DRY LAYER IN PLACE FOR THIS PERIOD THOUGH AND WILL
BE DIFFICULT FOR PRECIP TO REACH SURFACE. DID NOT INTRODUCE ANY
POPS FOR THIS WEEKEND AS ECMWF/NAM KEEP THE AREA DRY WITH PRECIP
TO THE NORTHWEST...BUT GFS DOES TRY TO DEVELOP PRECIP INTO
NORTHERN ILLINOIS SATURDAY NIGHT AND GIVEN NORTHWEST FLOW REGIME
WOULD NOT BE COMPLETELY SURPRISED IF THERE IS SOME PERIOD OF
PRECIP THIS WEEKEND.

NEXT WEEK...ON MONDAY AN UPPER CLOSED LOW IS FORECAST TO DEVELOP
ACROSS THE EASTERN CONUS AND MODELS CONTINUE TO STRUGGLE ON THE
DETAILS OF THIS SYSTEM. ECMWF DEVELOPS THE LOW OVER THE LOWER
APPALACHIAN RANGE AND HAS IT VERY SLOW DRIFTING EASTWARD...MOVING
OFF THE EAST COAST THURSDAY. MEANWHILE...THE GFS DEVELOPS THE UPPER
LOW OVER NEW ENGLAND AREA AND PUSHES IT NORTH INTO CANADA. GFS LOOKS
VERY LITTLE LIKE ITS ENSEMBLE MEAN WHICH HAS RIDGING IN PLACE
WED-THUR WHILE THE 12Z DETERMINISTIC RUN HAS LOW PRESSURE PUSHING
ACROSS THE REGION. GIVEN LARGE AMOUNT OF UNCERTAINTY...DID NOT STRAY
MUCH FROM MODEL CONSENSUS...WHICH INCLUDES SOME CHANCES FOR
PRECIP. BMD

&&

.AVIATION...

//ORD AND MDW CONCERNS...UPDATED 18Z...

* WINDS FAVORING A NORTHEAST TO EAST DIRECTION THIS AFTERNOON AND
  EVENING.

* RAIN AND SHOWERS DEVELOPING LATE TONIGHT.

* DETERIORATING CIGS TONIGHT INTO FRIDAY MORNING.

PAW

//DISCUSSION...UPDATED 18Z...

FRONT HAS PUSHED TO THE SOUTH OF THE TERMINALS THIS MORNING AND
BECOME NEARLY STATIONARY. A LOW WILL MOVE ALONG THE FRONT AND
CROSS NORTHERN ILLINOIS LATE TONIGHT INTO FRIDAY MORNING. THEN THE
FRONT WILL MOVE TO THE SOUTHEAST ON FRIDAY AFTER THE LOW PASSES BY.
DETAILS OF THE POSITION OF THE LOW AND THE FRONT WILL DETERMINE
WIND DIRECTIONS...AND ARE NOT COMPLETELY CERTAIN AT THIS TIME.

SHOWERS AND SOME THUNDERSTORMS WILL BE DEVELOPING LATER NEAR THE
FRONT AND INCREASE AS THE LOW APPROACHES. THESE COULD GET INTO THE
RFD AREA THIS EVENING...BUT WILL BE LATER IN THE NIGHT AT THE
EASTERN TERMINALS. WITH PRECIPITATION NEARBY AND A LOW PRESSURE
CENTER MOVING ACROSS THE AREA CEILINGS WILL BE LOWERING BY LATE
TONIGHT. THEY COULD GO IFR FOR A WHILE FRIDAY MORNING.

PAW

//ORD AND MDW CONFIDENCE...UPDATED 18Z...

* MEDIUM CONFIDENCE IN WIND TREND.

* MEDIUM CONFIDENCE IN PRECIPITATION TIMING LATE TONIGHT.

* HIGH CONFIDENCE IN CIG TREND TONIGHT INTO FRIDAY...LOW
  CONFIDENCE IN MVFR VERSUS IFR VALUES.

PAW

//OUTLOOK FOR ORD/MDW FOR 00Z SATURDAY-12Z THURSDAY...UPDATED 12Z...

 * FRIDAY...MVFR. SHRA
 * SATURDAY THROUGH MONDAY...VFR
 * TUESDAY...CHC TSRA.

SHEA

&&

.MARINE...
158 PM CDT

MAIN FEATURE OF THE AFTERNOON MARINE PKG WILL BE TO UPGRADE THE
GALE WATCH TO A GALE WARNING.

A LOW PRESSURE SYSTEM OVER WEST CENTRAL QUEBEC CONTINUES TO SLIDE
NORTHEAST WITH A TRAILING FRONTAL BOUNDARY THAT HAS PUSHED SOUTH
ACROSS SOUTHERN LAKE MICHIGAN...STRETCHING WEST INTO THE CENTRAL
PLAINS WHERE ANOTHER LOW PRESSURE SYSTEM WAS DEVELOPING THIS
AFTERNOON. A WEAK AREA OF HIGH PRESSURE HAS PUSHED OVER CENTRAL
ONTARIO...WHICH THE COMBINATION OF THE TWO SYSTEMS AND THE FRONTAL
BOUNDARY HAS RESULTED IN BREEZY CONDITIONS ACROSS THE NORTHERN
HALF OF LAKE MICHIGAN...WITH A LIGHTER WIND GRADIENT FURTHER
SOUTH. FOR THE MOST PART OBSERVATIONS ACROSS THE LAKE HAVE HOVERED
IN THE 15 TO 25 KT RANGE. GUIDANCE SUGGESTS THAT AS THE LOW
PRESSURE SYSTEM OVER THE CENTRAL PLAINS CONTINUES TO DEVELOP AND
LIFT NORTHEAST TOWARDS THE WESTERN GREAT LAKES/UPPER MIDWEST
TONIGHT...THAT THE FRONTAL BOUNDARY WILL BEGIN TO LIFT NORTH. AS
THIS BOUNDARY LIFTS NORTH WINDS MAY RELAX FURTHER OR BECOME LESS
THAN 10KT ACROSS THE FAR SOUTHERN THIRD OF THE LAKE.
HOWEVER...FURTHER NORTH THE GRADIENT WILL RAPIDLY TIGHTEN AND
RESULT IN NORTH/NORTHEAST WINDS INCREASING TO GALES TO 35 KT. A
FEW GUSTS MAY APPROACH 40 KT OVERNIGHT INTO FRIDAY MORNING.

THEN THE LOW PRESSURE SLIDES EAST ACROSS THE CENTER OF LAKE
MICHIGAN WITH THE GRADIENT INCREASING OVER THE ENTIRE
LAKE...ALLOWING GALES TO STRETCH FURTHER SOUTH AND COVER ALL OF
LAKE MICHIGAN BY DAYBREAK FRIDAY. IT IS ALSO POSSIBLE THAT GALE
CRITERIA MAY NOT REACH THE NEARSHORE WATERS UNTIL CLOSER TO
DAYBREAK FRIDAY...HOWEVER BASED ON THE FORECASTED GUIDANCE OF
A VERY TIGHT GRADIENT...FEEL THAT WINDS WILL BE RAPIDLY INCREASING
BEHIND THE LOW PRESSURE AND HAVE OPTED TO START THE GALE WARNING
EARLIER.

THEN THE GRADIENT BEGINS TO SLACKEN ACROSS THE NORTHERN HALF OF
THE LAKE BY MIDDAY FRI...ENOUGH TO BRING WINDS DOWN BELOW GALE
CRITERIA FOR THE NORTHERN THIRD. A WEAKENING GRADIENT EVENTUALLY
ARRIVES ACROSS THE SOUTHERN HALF OF THE LAKE FRIDAY EVENING. WITH
THE PROLONGED PERIOD OF NORTH WINDS FRIDAY...WAVES COULD EASILY
APPROACH 10 FT ACROSS THE ILLINOIS/NORTHWEST INDIANA NEARSHORE
WATERS.

WINDS SHOULD GO BELOW GALE CRITERIA FRIDAY NIGHT...HOWEVER REMAIN
WITHIN SMALL CRAFT CRITERIA. THUS IT APPEARS LIKELY A SMALL CRAFT
ADVISORY WILL BE NEEDED AFTER THE GALE WARNING EXPIRES FOR THE
NEARSHORE WATERS.

AFTER FRIDAY A PERIOD OF QUIET WEATHER RETURNS TO THE GREAT LAKES
REGION THROUGH THE UPCOMING WEEKEND.

BEACHLER

&&

.LOT WATCHES/WARNINGS/ADVISORIES...
IL...NONE.
IN...NONE.
LM...GALE WARNING...LMZ261-LMZ362-LMZ364-LMZ366-LMZ563-LMZ565-LMZ567-
     LMZ868...1 AM FRIDAY TO 4 PM FRIDAY.

     GALE WARNING...LMZ080-LMZ669-LMZ671-LMZ673-LMZ675-LMZ740-LMZ741-
     LMZ742-LMZ743-LMZ744-LMZ745-LMZ777-LMZ779-LMZ870-LMZ872-
     LMZ874-LMZ876-LMZ878...4 AM FRIDAY TO 10 PM FRIDAY.

&&

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE CHICAGO/ROMEOVILLE IL
1033 AM CDT THU APR 19 2012

ILZ003>006-008-010>014-019>023-032-033-039-INZ001-002-010-011-019-
201545-
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-
1033 AM CDT THU APR 19 2012 /1133 AM EDT THU APR 19 2012/

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

.DAY ONE...THIS AFTERNOON AND TONIGHT.

THERE IS A SLIGHT CHANCE OF THUNDERSTORMS TODAY...MAINLY NORTH OF
THE INTERSTATE 88 CORRIDOR. THERE IS A SLIGHT CHANCE OF
THUNDERSTORMS ACROSS NORTH CENTRAL ILLINOIS THIS EVENING...THEN
ACROSS MUCH OF THE OUTLOOK AREA TONIGHT MAINLY AFTER MIDNIGHT. NO
SEVERE WEATHER IS EXPECTED.

.DAYS TWO THROUGH SEVEN...FRIDAY THROUGH WEDNESDAY.

THERE IS A SLIGHT CHANCE OF THUNDERSTORMS FRIDAY MORNING MAINLY
EAST OF INTERSTATE 55 IN ILLINOIS...AND ACROSS NORTHWEST INDIANA.

.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>745-201545-
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-
1033 AM CDT THU APR 19 2012

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

.DAY ONE...THIS AFTERNOON AND TONIGHT.

THERE IS A SLIGHT CHANCE OF THUNDERSTORMS TODAY...AND AGAIN AFTER
MIDNIGHT TONIGHT.

.DAYS TWO THROUGH SEVEN...FRIDAY THROUGH WEDNESDAY.

THERE IS A SLIGHT CHANCE OF THUNDERSTORMS FRIDAY MORNING...MAINLY
SOUTH AND EAST OF CHICAGO.

STRONG NORTH WINDS WILL RESULT IN HIGH WAVES AND HAZARDOUS
CONDITIONS FOR SMALL CRAFT FRIDAY THROUGH SATURDAY NIGHT. NORTH
WINDS OF GALE FORCE ARE LIKELY FRIDAY AND FRIDAY EVENING.

&&

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-
870-872-874-876-878-201545-
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-
1033 AM CDT THU APR 19 2012

THIS HAZARDOUS WEATHER OUTLOOK IS FOR THE OPEN WATERS OF LAKE
MICHIGAN.

.DAY ONE...THIS AFTERNOON AND TONIGHT.

THERE IS A SLIGHT CHANCE OF THUNDERSTORMS ACROSS FAR SOUTHERN
LAKE MICHIGAN TODAY AND TONIGHT.

NORTH GALES ARE LIKELY TONIGHT ON NORTHERN LAKE MICHIGAN.

.DAYS TWO THROUGH SEVEN...FRIDAY THROUGH WEDNESDAY.

THERE IS A SLIGHT CHANCE OF THUNDERSTORMS ON FAR SOUTHERN LAKE
MICHIGAN FRIDAY MORNING.

NORTH GALES ARE EXPECTED ACROSS THE ENTIRE LAKE FRIDAY...AND
ACROSS SOUTHERN LAKE MICHIGAN FRIDAY EVENING.

&&

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

BMD

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE CHICAGO/ROMEOVILLE IL
853 AM CDT THU APR 19 2012

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0845 AM     HAIL             LOVES PARK              42.34N 89.01W
04/19/2012  E0.25 INCH       WINNEBAGO          IL   TRAINED SPOTTER

&&

RC