Marine Weather Message
Issued by NWS Detroit/Pontiac, MI

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000
WHUS73 KDTX 200753
MWWDTX

URGENT - MARINE WEATHER MESSAGE
NATIONAL WEATHER SERVICE DETROIT/PONTIAC MI
353 AM EDT SAT MAY 20 2017

...GUSTY WINDS AND ELEVATED WAVES CONTINUE TODAY...

.A LOW PRESSURE SYSTEM WILL BE LIFTING NORTHWARD THROUGH THE WESTERN
GREAT LAKE SATURDAY NIGHT AND SUNDAY. THIS SYSTEM WILL PULL A WARM
FRONT THROUGH THE EASTERN LAKES SATURDAY NIGHT WITH A COLD FRONT
QUICKLY FOLLOWING ON SUNDAY. THIS WILL RESULT IN SEVERAL WIND SHIFTS
THROUGH THE WEEKEND WHICH WILL LEAD TO VARYING WAVE HEIGHTS THROUGH
THAT PERIOD AS WELL. FORECAST STARTS OFF WITH NORTHEASTERLY FLOW
TODAY GUSTING TO AROUND 20 KNOTS WITH WAVES BUILDING ALONG THE
WESTERN HURON BASIN. WINDS TURN MORE EASTERLY AS THE WARM FRONT
APPROACHES SHIFTING THE HIGHER WAVES SLIGHTLY NORTHWARD.  THIS WILL
LEAD TO MARGINAL SMALL CRAFT CONDITIONS THROUGH MOST OF THE DAY.
WINDS WILL VEER TO THE SOUTHEAST WHILE STILL GUSTING TO NEAR 20
KNOTS ON SUNDAY REDUCING THE WAVE HEIGHTS ALONG THE NEARSHORE WATERS
THUS SMALL CRAFT ADVISORIES ARE LESS LIKELY.

LHZ442-443-201400-
/O.CON.KDTX.SC.Y.0038.000000T0000Z-170520T1400Z/
HARBOR BEACH TO PORT SANILAC MI-PORT SANILAC TO PORT HURON MI-
353 AM EDT SAT MAY 20 2017

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

* WIND AND WAVES: DURING THE SMALL CRAFT ADVISORY...EXPECT
  SUSTAINED WINDS UP TO 17 KNOTS FROM THE NORTHEAST WITH GUSTS
  UP TO 18 KNOTS. THE LARGEST EXPECTED SIGNIFICANT WAVES WILL
  BE 4 FEET WITH A POTENTIAL MAXIMUM WAVE HEIGHT OF 5 FEET.

* TIMING: THE MAXIMUM WINDS ARE EXPECTED AROUND 4 AM EDT
  SATURDAY WITH THE LARGEST WAVES EXPECTED AROUND 5 AM EDT
  SATURDAY.

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.

&&

$$

LHZ421-422-441-202000-
/O.CON.KDTX.SC.Y.0038.000000T0000Z-170520T2000Z/
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-
353 AM EDT SAT MAY 20 2017

...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 4 PM EDT THIS
AFTERNOON...

* WIND AND WAVES: DURING THE SMALL CRAFT ADVISORY...EXPECT
  SUSTAINED WINDS UP TO 20 KNOTS FROM THE NORTHEAST WITH GUSTS
  UP TO 24 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 4 AM EDT
  SATURDAY WITH THE LARGEST WAVES EXPECTED AROUND 6 AM EDT
  SATURDAY.

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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