Marine Weather Message
Issued by NWS Detroit/Pontiac, MI

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000
WHUS73 KDTX 161943
MWWDTX

URGENT - MARINE WEATHER MESSAGE
NATIONAL WEATHER SERVICE DETROIT/PONTIAC MI
343 PM EDT WED AUG 16 2017

...INCREASING WAVES ON SOUTHEAST WINDS THURSDAY...

.SOUTHEAST TO SOUTH FLOW WILL INCREASE SUBSTANTIALLY THURSDAY AS A
STORM SYSTEM MOVES ACROSS THE GREAT LAKES REGION. SHOWERS AND
THUNDERSTORMS ARE EXPECTED WITH THIS SYSTEM ON THURSDAY. BEHIND THE
COLD FRONT, THURSDAY NIGHT, MODERATE SOUTHWEST TO WEST FLOW WILL
SETUP. THE STRONGER WINDS WILL ENCOURAGE HIGHER WAVES TO INITIALLY
SETUP IN THE SOUTHEAST FLOW ALONG THE LAKE HURON SHORELINE, THEN
TRANSITION TO A MORE TYPICAL OFFSHORE FLOW SETUP WITH HIGHER WAVES
IN SAGINAW BAY ON FRIDAY.

LHZ441-442-170830-
/O.NEW.KDTX.SC.Y.0055.170817T1500Z-170819T0000Z/
PORT AUSTIN TO HARBOR BEACH MI-HARBOR BEACH TO PORT SANILAC MI-
343 PM EDT WED AUG 16 2017

...SMALL CRAFT ADVISORY IN EFFECT FROM 11 AM THURSDAY TO 8 PM EDT
FRIDAY...

THE NATIONAL WEATHER SERVICE IN DETROIT/PONTIAC HAS ISSUED A
SMALL CRAFT ADVISORY WHICH IS IN EFFECT FROM 11 AM THURSDAY TO
8 PM EDT FRIDAY.

* WIND AND WAVES: DURING THE SMALL CRAFT ADVISORY...EXPECT
  SUSTAINED WINDS UP TO 20 KNOTS FROM THE SOUTHWEST WITH GUSTS
  UP TO 25 KNOTS. THE LARGEST EXPECTED SIGNIFICANT WAVES WILL
  BE 5 FEET WITH A POTENTIAL MAXIMUM WAVE HEIGHT OF 7 FEET.

* TIMING: THE MAXIMUM WINDS ARE EXPECTED AROUND 9 AM EDT FRIDAY
  WITH THE LARGEST WAVES EXPECTED AROUND 12 AM EDT FRIDAY.

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.

&&

$$

MR



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