Marine Weather Message
Issued by NWS Detroit/Pontiac, MI

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000
WHUS73 KDTX 212114
MWWDTX

URGENT - MARINE WEATHER MESSAGE
NATIONAL WEATHER SERVICE DETROIT/PONTIAC MI
414 PM EST SAT JAN 21 2017

...DENSE FOG AFFECT THE GREAT LAKES TONIGHT...

.LIGHT EAST TO SOUTHEASTERLY WINDS WILL REMAIN IN PLACE THROUGH THE
OVERNIGHT HOURS... WITH THE EXCEPTION OF A MORE SOUTHERLY COMPONENT
PREDOMINANT OVER WESERN LAKE ERIE SOUTH OF A SLOW NORTHWARD MOVING
WARM FRONT. WIDESPREAD FOG SHOULD ALSO CONTINUE OVER MOST MARINE
AREAS OF LAKE HURON OVERNIGHT.  INTERESTINGLY, NOT MUCH FOG HAS
OCCURRED OVER LAKE ERIE, LAKE ST. CLAIR OR EVEN LAKE MICIGAN DESPITE
DEWPOINTS CLIMBING INTO THE 50S. LIKELY THERE IS AN EXTREMELY
SHALLOW COLD MARINE LAYER KEEPING MOISTURE OFF THE SURFACE.

WEAK TO MODERATE SURFACE LOW EXPECTED TO PASS SOUTH OF THE GREAT
LAKES SUNDAY WILL GRADUALLY BACK WINDS TO A MORE EASTERLY DIRECTION
AND PERHAPS BRIEFLY NORTHEAST. WIND SPEEDS LIKELY TO INCREASE TO
AROUND 25-30 KNOTS OR SO BY THE END OF THE DAY SUNDAY AND CONTINUE
THROUGH MONDAY AFTERNOON.

NEXT LOW PROGGED TO CROSS LOWER MICIGAN AND LAKE HURON BETWEEN 12Z
AND 18Z MONDAY TURNING WIND WESTERLY IN THE SOUTHERN LAKES WEDNESDAY
AND NORTHWESTERLY IN THE NORTHEN LAKES BY THURSDAY MORNING.  SPEEDS
SHOULD REMAIN JUST SUB-GALE FOR THE MOST PART.

LCZ460-220915-
/O.CON.KDTX.MF.Y.0003.000000T0000Z-170122T1500Z/
LAKE ST. CLAIR-
414 PM EST SAT JAN 21 2017

...DENSE FOG ADVISORY REMAINS IN EFFECT UNTIL 10 AM EST SUNDAY...

* EXPECT DENSE FOG WITH VISIBILITIES OF ONE QUARTER OF A MILE OR
  LESS UNTIL 10 AM EST SUNDAY.

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.

&&

$$

LHZ421-422-441>443-462>464-220915-
/O.CON.KDTX.MF.Y.0001.000000T0000Z-170122T1500Z/
OUTER SAGINAW BAY SW OF ALABASTER TO PORT AUSTIN MI TO INNER
SAGINAW BAY-INNER SAGINAW BAY SW OF POINT AU GRES TO BAY PORT MI-
PORT AUSTIN TO HARBOR BEACH MI-HARBOR BEACH TO PORT SANILAC MI-
PORT SANILAC TO PORT HURON MI-
LAKE HURON FROM PORT AUSTIN TO HARBOR BEACH BEYOND 5NM OFF SHORE-
LAKE HURON FROM HARBOR BEACH TO PORT SANILAC BEYOND 5NM OFF SHORE-
LAKE HURON FROM PORT SANILAC TO PORT HURON BEYOND 5NM OFF SHORE-
414 PM EST SAT JAN 21 2017

...DENSE FOG ADVISORY REMAINS IN EFFECT UNTIL 10 AM EST SUNDAY...

* EXPECT DENSE FOG WITH VISIBILITIES OF ONE QUARTER OF A MILE OR
  LESS UNTIL 10 AM EST SUNDAY.

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.

&&

$$

LHZ361>363-220915-
/O.CON.KDTX.MF.Y.0002.000000T0000Z-170122T1500Z/
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-
414 PM EST SAT JAN 21 2017

...DENSE FOG ADVISORY REMAINS IN EFFECT UNTIL 10 AM EST SUNDAY...

* EXPECT DENSE FOG WITH VISIBILITIES OF ONE QUARTER OF A MILE OR
  LESS UNTIL 10 AM EST SUNDAY.

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.

&&

$$

CB



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