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Dense Fog Advisory


URGENT - MARINE WEATHER MESSAGE
NATIONAL WEATHER SERVICE CHICAGO IL
342 PM CST WED FEB 22 2017

LMZ080-669-671-673-675-777-779-870-872-874-876-878-230545-
/O.CON.KLOT.MF.Y.0009.000000T0000Z-170223T0300Z/
/O.CON.KLOT.GL.A.0010.170224T0600Z-170224T1500Z/
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-
342 PM CST WED FEB 22 2017

...DENSE FOG ADVISORY REMAINS IN EFFECT UNTIL 9 PM CST THIS
EVENING...
...GALE WATCH REMAINS IN EFFECT FROM LATE THURSDAY NIGHT THROUGH
FRIDAY MORNING...

* WINDS...EAST GALES TO 35 KT.

* SIGNIFICANT WAVES...TO 9 FT.

* OCCASIONAL WAVES...TO 11 FT.

* VISIBILITY...LESS THAN ONE QUARTER MILE.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A DENSE FOG ADVISORY MEANS VISIBILITIES WILL FREQUENTLY BE
REDUCED TO LESS THAN ONE MILE. INEXPERIENCED MARINERS...
ESPECIALLY THOSE OPERATING SMALLER VESSELS SHOULD AVOID
NAVIGATING IN THESE CONDITIONS.

A GALE WATCH IS ISSUED WHEN THE RISK OF GALE FORCE WINDS OF 34 TO
47 KNOTS HAS SIGNIFICANTLY INCREASED...BUT THE SPECIFIC TIMING
AND/OR LOCATION IS STILL UNCERTAIN. IT IS INTENDED TO PROVIDE
ADDITIONAL LEAD TIME FOR MARINERS WHO MAY WISH TO CONSIDER
ALTERING THEIR PLANS.

&&

$$

URGENT - MARINE WEATHER MESSAGE
NATIONAL WEATHER SERVICE CHICAGO IL
342 PM CST WED FEB 22 2017

LMZ261-362-364-366-563-565-567-868-230545-
/O.CON.KLOT.MF.Y.0009.000000T0000Z-170223T0300Z/
/O.CON.KLOT.GL.A.0010.170224T0600Z-170224T2000Z/
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 HOLLAND TO WHITEHALL MI 5 NM OFF SHORE TO MID-
LINE OF LAKE-
342 PM CST WED FEB 22 2017

...DENSE FOG ADVISORY REMAINS IN EFFECT UNTIL 9 PM CST THIS
EVENING...
...GALE WATCH REMAINS IN EFFECT FROM LATE THURSDAY NIGHT THROUGH
FRIDAY AFTERNOON...

* WINDS...EAST GALES TO 40 KT.

* SIGNIFICANT WAVES...TO 9 FT.

* OCCASIONAL WAVES...TO 11 FT.

* VISIBILITY...LESS THAN ONE QUARTER MILE.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A DENSE FOG ADVISORY MEANS VISIBILITIES WILL FREQUENTLY BE
REDUCED TO LESS THAN ONE MILE. INEXPERIENCED MARINERS...
ESPECIALLY THOSE OPERATING SMALLER VESSELS SHOULD AVOID
NAVIGATING IN THESE CONDITIONS.

A GALE WATCH IS ISSUED WHEN THE RISK OF GALE FORCE WINDS OF 34 TO
47 KNOTS HAS SIGNIFICANTLY INCREASED...BUT THE SPECIFIC TIMING
AND/OR LOCATION IS STILL UNCERTAIN. IT IS INTENDED TO PROVIDE
ADDITIONAL LEAD TIME FOR MARINERS WHO MAY WISH TO CONSIDER
ALTERING THEIR PLANS.

&&

$$

URGENT - MARINE WEATHER MESSAGE
NATIONAL WEATHER SERVICE GREEN BAY WI
322 PM CST WED FEB 22 2017

...DENSE FOG OVER LAKE MICHIGAN THIS EVENING, STRONG WINDS
EXPECTED BEGINNING THURSDAY NIGHT...

.A MOIST AIRMASS FLOWING OVER THE COLD WATERS OF LAKE MICHIGAN
WILL PRODUCE A PERIOD OF DENSE FOG OVER THE LAKE THROUGH THIS
EVENING. AS A AREA OF LOW PRESSURE APPROACHES THE WESTERN GREAT
LAKES THURSDAY NIGHT AND FRIDAY NORTHEAST WINDS ARE EXPECTED TO
INCREASE AND APPROACH GALE FORCE AT TIMES.

LMZ541>543-230530-
/O.CON.KGRB.MF.Y.0002.000000T0000Z-170223T0300Z/
/O.NEW.KGRB.GL.A.0002.170224T0600Z-170224T2100Z/
ROCK ISLAND PASSAGE TO STURGEON BAY WI-
STURGEON BAY TO TWO RIVERS WI-TWO RIVERS TO SHEBOYGAN WI-
322 PM CST WED FEB 22 2017

...DENSE FOG ADVISORY REMAINS IN EFFECT UNTIL 9 PM CST THIS
EVENING...
...GALE WATCH IN EFFECT FROM LATE THURSDAY NIGHT THROUGH FRIDAY
AFTERNOON...

THE NATIONAL WEATHER SERVICE IN GREEN BAY HAS ISSUED A GALE
WATCH, WHICH IS IN EFFECT FROM LATE THURSDAY NIGHT THROUGH FRIDAY
AFTERNOON.

* WINDS...SOUTH AT 10 TO 20 KNOTS VEERING NORTHWEST TONIGHT, THEN
  VEERING NORTHEAST ON THURSDAY. NORTHEAST WINDS INCREASE TO 30
  KNOTS WITH GUSTS TO ABOUT 35 KNOTS THURSDAY EVENING.

* WAVES...2 TO 4 FEET BUILDING TO 5 TO 8 FEET THURSDAY NIGHT.

* VISIBILITY...WIDESPREAD VISIBILITY BELOW 1 MILE.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A DENSE FOG ADVISORY MEANS VISIBILITIES WILL FREQUENTLY BE
REDUCED TO LESS THAN ONE MILE. INEXPERIENCED MARINERS...
ESPECIALLY THOSE OPERATING SMALLER VESSELS SHOULD AVOID
NAVIGATING IN THESE CONDITIONS.

A GALE WATCH IS ISSUED WHEN THE RISK OF GALE FORCE WINDS HAS
SIGNIFICANTLY INCREASED, BUT THE SPECIFIC TIMING AND LOCATION IS
STILL UNCERTAIN.  IT IS INTENDED TO PROVIDE ADDITIONAL LEAD TIME
FOR MARINERS WHO MAY WISH TO CONSIDER ALTERING THEIR PLANS.

&&

$$

URGENT - MARINE WEATHER MESSAGE
NATIONAL WEATHER SERVICE MARQUETTE MI
417 PM EST WED FEB 22 2017

LMZ248-250-230530-
/O.CON.KMQT.MF.Y.0003.000000T0000Z-170223T0300Z/
/O.NEW.KMQT.GL.A.0006.170224T0900Z-170224T2000Z/
SEUL CHOIX POINT TO POINT DETOUR MI-
5NM EAST OF A LINE FROM FAIRPORT MI TO ROCK ISLAND PASSAGE-
417 PM EST WED FEB 22 2017

...DENSE FOG ADVISORY REMAINS IN EFFECT UNTIL 10 PM EST THIS
EVENING...
...GALE WATCH IN EFFECT FROM LATE THURSDAY NIGHT THROUGH FRIDAY
AFTERNOON...

THE NATIONAL WEATHER SERVICE IN MARQUETTE HAS ISSUED A GALE
WATCH...WHICH IS IN EFFECT FROM LATE THURSDAY NIGHT THROUGH
FRIDAY AFTERNOON.

* WIND AND WAVES DURING THE GALE WATCH: EXPECT SUSTAINED WINDS OF
  UP TO 29 KNOTS FROM THE NORTHEAST...WITH GUSTS UP TO 36 KNOTS.
  THE LARGEST EXPECTED SIGNIFICANT WAVES WILL BE 8 FEET WITH A
  MAXIMUM WAVE HEIGHT OF UP TO 12 FEET POSSIBLE.

* TIMING: THE MAXIMUM WINDS ARE EXPECTED AROUND 9 AM EST FRIDAY
  WITH THE LARGEST WAVES EXPECTED AROUND 11 AM EST FRIDAY.

A DENSE FOG ADVISORY REMAINS IN EFFECT UNTIL 10 PM EST THIS
EVENING.

PLEASE SEE THE LATEST MARINE FORECASTS FOR MORE DETAILED
INFORMATION.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A DENSE FOG ADVISORY MEANS VISIBILITIES WILL FREQUENTLY BE
REDUCED TO LESS THAN ONE MILE. INEXPERIENCED MARINERS...ESPECIALLY
THOSE OPERATING SMALLER VESSELS SHOULD AVOID NAVIGATING IN THESE
CONDITIONS.

A GALE WATCH IS ISSUED WHEN THE RISK OF GALE FORCE WINDS OF 34 TO
47 KNOTS HAS SIGNIFICANTLY INCREASED...BUT THE SPECIFIC TIMING
AND/OR LOCATION IS STILL UNCERTAIN. IT IS INTENDED TO PROVIDE
ADDITIONAL LEAD TIME FOR MARINERS WHO MAY WISH TO CONSIDER
ALTERING THEIR PLANS.

&&

$$

URGENT - MARINE WEATHER MESSAGE
NATIONAL WEATHER SERVICE DETROIT/PONTIAC MI
348 PM EST WED FEB 22 2017

...AREAS OF DENSE FOG TO PERSIST TONIGHT...

.WARM AND MOIST SOUTHWESTERLY FLOW OVER THE COLDER WATERS IS
PRODUCING ARES OF LOW STRATUS AND FOG,  MOSTLY OVER THE NORTHERN
HALF OF LAKE HURON.  LOW PRESSURE WILL SLIDE ACROSS THE STRAITS
REGION LATE TONIGHT BEFORE EXITING NORTHEAST OF LAKE HURON BY
DAYBREAK THURSDAY. THE RESULT WILL BE A VEERING OF THE WINDS TO THE
NORTHWEST, BRINGING DRIER AIR ACROSS THE LAKE AND THEREBY SCOURING
OUT LINGERING FOG.  SOME LIGHT RAIN SHOWERS MAY ACCOMPANY THIS SYSTEM

DEEPENING LOW PRESSURE IS FORECAST TO MOVE FROM IOWA TO NORTHERN
MICHIGAN ON FRIDAY. EASTERLY WINDS WILL INCREASE ACROSS LAKE HURON
IN RESPONSE. THERE IS FAIRLY HIGH PROBABILITY THAT GUSTS ACROSS THE
NORTHERN AND CENTRAL PORTIONS OF THE LAKE WILL REACH 30 KNOTS, WITH
A CHANCE FOR SOME GALE FORCE WIND GUSTS. GUSTY WINDS WILL THEN ENSUE
FRIDAY NIGHT INTO SATURDAY AS THE SYSTEM LIFTS NORTHEAST OF THE
REGION, WITH A BETTER CHANCE FOR GALE FORCE GUSTS WITH A LONGER
DURATION.

LHZ361>363-230915-
/O.CON.KDTX.MF.Y.0004.000000T0000Z-170223T1200Z/
LAKE HURON FROM 5NM EAST OF MACKINAC BRIDGE TO PRESQUE ISLE LT
BEYOND 5 NM OFF SHORE-
LAKE HURON FROM PRESQUE ISLE LIGHT TO STURGEON POINT MI BEYOND
5NM OFF SHORE-
LAKE HURON FROM STURGEON POINT TO ALABASTER MI BEYOND 5NM OFF
SHORE-
348 PM EST WED FEB 22 2017

...DENSE FOG ADVISORY REMAINS IN EFFECT UNTIL 7 AM EST THURSDAY...

* EXPECT DENSE FOG WITH VISIBILITIES OF ONE QUARTER OF A MILE OR
  LESS UNTIL 7 AM EST THURSDAY.

REFER TO THE LATEST MARINE FORECASTS FOR GREATER DETAIL.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A DENSE FOG ADVISORY MEANS VISIBILITIES WILL FREQUENTLY BE
REDUCED TO LESS THAN ONE MILE. INEXPERIENCED MARINERS, ESPECIALLY
THOSE OPERATING SMALLER VESSELS, SHOULD AVOID NAVIGATING IN THESE
CONDITIONS.

&&

$$

MR

U.S. Dept. of Commerce
NOAA National Weather Service
1325 East West Highway
Silver Spring, MD 20910
E-mail: w-nws.webmaster@noaa.gov
Page last modified: June 2, 2009
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