Marine Weather Message
Issued by NWS Detroit/Pontiac, MI

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000
WHUS73 KDTX 160843
MWWDTX

URGENT - MARINE WEATHER MESSAGE
NATIONAL WEATHER SERVICE DETROIT/PONTIAC MI
343 AM EST THU FEB 16 2017

...WIND AND WAVES DECREASING TODAY...

.MIDLEVEL COLD POOL WITHIN THERMAL TROUGH AND ASSOCIATED STEEP LOW
LEVEL LAPSE RATES WILL STAY IN PLACE OVER THE CENTRAL GREAT LAKES
THROUGHOUT THE REMAINDER OF THE MORNING HOURS. NORTHWEST WINDS WILL
REMAIN IN THE 15 TO 25 KNOT RANGE DURING THIS TIME. NORTHWEST WINDS
WILL THEN DECREASE DRAMATICALLY THIS WEEKEND IN RESPONSE TO A
SURFACE RIDGE PUSHING DIRECTLY INTO THE AREA. VARIABLE WINDS ARE
EXPECTED TONIGHT WITH MODEST SOUTHEASTERLY WINDS DEVELOPING FOR
FRIDAY. ALL SIGNS POINT TO AN EXTENDED RUN OF RELATIVELY BENIGN
MARINE CONDITIONS, LESS THAN 20 KNOTS, RIGHT INTO NEXT WEEK. THE ONE
EXCEPTION WILL BE A PERIOD OF MODEST WESTERLY FLOW DEVELOPING OVER
BOTH THE SOUTHERN GREAT LAKES AND NORTHERN GREAT LAKES SATURDAY.
WEST WINDS OF AROUND 20 TO 25 KNOTS WILL BE POSSIBLE THEN.

LHZ441>443-161500-
/O.CON.KDTX.SC.Y.0008.000000T0000Z-170216T1500Z/
PORT AUSTIN TO HARBOR BEACH MI-HARBOR BEACH TO PORT SANILAC MI-
PORT SANILAC TO PORT HURON MI-
343 AM EST THU FEB 16 2017

...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 10 AM EST THIS
MORNING...

* WIND AND WAVES: DURING THE SMALL CRAFT ADVISORY...EXPECT
  SUSTAINED WINDS UP TO 19 KNOTS FROM THE NORTHWEST WITH GUSTS
  UP TO 27 KNOTS. THE LARGEST EXPECTED SIGNIFICANT WAVES WILL
  BE 6 FEET WITH A POTENTIAL MAXIMUM WAVE HEIGHT OF 8 FEET.

* TIMING: THE MAXIMUM WINDS ARE EXPECTED AROUND 4 AM EST
  THURSDAY WITH THE LARGEST WAVES EXPECTED AROUND 3 AM EST
  THURSDAY.

REFER TO THE LATEST MARINE FORECASTS FOR GREATER DETAIL.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A SMALL CRAFT ADVISORY MEANS THAT WIND SPEEDS OF 21 TO 33 KNOTS
ARE EXPECTED TO PRODUCE HAZARDOUS WAVE CONDITIONS TO SMALL CRAFT.
INEXPERIENCED MARINERS...ESPECIALLY THOSE OPERATING SMALLER
VESSELS SHOULD AVOID NAVIGATING IN THESE CONDITIONS.

&&

$$

SF



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