Marine Weather Message
Issued by NWS Detroit/Pontiac, MI

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344
WHUS73 KDTX 290250
MWWDTX

URGENT - MARINE WEATHER MESSAGE
NATIONAL WEATHER SERVICE DETROIT/PONTIAC MI
1050 PM EDT WED SEP 28 2016

...MODERATE EASTERLY FLOW AND HIGH WAVES OVER THE NEXT COUPLE
DAYS...

.STRONG NORTHEAST WINDS WILL DEVELOP OVER THE CENTRAL GREAT LAKES
TONIGHT AS HIGH PRESSURE SETTLES IN OVER ONTARIO AND AS LOW PRESSURE
DROPS INTO THE OHIO VALLEY AND THEN KENTUCKY. THIS PATTERN WILL
REMAIN FAIRLY STAGNANT INTO FRIDAY, PROVIDING A PROLONGED PERIOD OF
NORTHEAST WINDS WITH SUSTAINED SPEEDS IN THE 15 TO 25 KNOT RANGE.
THE PERSISTENT NORTHEAST WIND AND LARGE FETCH OVER BOTH LAKE HURON
AND WESTERN LAKE ERIE WILL ALLOW LARGE WAVES TO BUILD FROM TONIGHT
INTO FRIDAY NIGHT. SMALL CRAFT ADVISORIES REMAIN IN EFFECT FOR ALL
MARINE AREAS INTO LATE FRIDAY NIGHT DUE TO LARGE WAVES AND GUSTY
WINDS. THE AREA OF LOW PRESSURE WILL LIFT BACK NORTHWARD INTO
MICHIGAN LATE FRIDAY NIGHT INTO SATURDAY. THIS WILL DECREASE THE
SURFACE PRESSURE GRADIENT AND TURN WINDS MORE TO THE EAST, ALLOWING
WIND SPEEDS AND WAVE HEIGHTS TO DECREASE OVERNIGHT.

MOISTURE WILL MEANWHILE CONTINUE TO WRAP AROUND THE AREA OF LOW
PRESSURE INTO THE WEEKEND, PROVIDING NUMEROUS SHOWERS BUT ONLY A LOW
CHANCE FOR THUNDERSTORMS. THE COOL AIRMASS WILL PROVIDE A CHANCE FOR
WATERSPOUTS TONIGHT AND THURSDAY AS THE COLDER AIR RESIDES OVER THE
WARM LAKE WATERS.

LHZ421-422-441>443-291500-
/O.CON.KDTX.SC.Y.0055.000000T0000Z-161001T0400Z/
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-
1050 PM EDT WED SEP 28 2016

...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL MIDNIGHT EDT
FRIDAY NIGHT...

* WIND AND WAVES: DURING THE SMALL CRAFT ADVISORY...EXPECT
  SUSTAINED WINDS UP TO 24 KNOTS FROM THE EAST WITH GUSTS UP TO
  30 KNOTS. THE LARGEST EXPECTED SIGNIFICANT WAVES WILL BE 7
  FEET WITH A POTENTIAL MAXIMUM WAVE HEIGHT OF 10 FEET.

* TIMING: THE MAXIMUM WINDS ARE EXPECTED AROUND 8 AM EDT
  THURSDAY WITH THE LARGEST WAVES EXPECTED AROUND 1 PM EDT
  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.

&&

$$

LCZ460-LEZ444-291500-
/O.CON.KDTX.SC.Y.0055.160929T1200Z-161001T0400Z/
LAKE ST. CLAIR-
MICHIGAN WATERS OF LAKE ERIE FROM DETROIT RIVER TO NORTH CAPE MI-
1050 PM EDT WED SEP 28 2016

...SMALL CRAFT ADVISORY REMAINS IN EFFECT FROM 8 AM THURSDAY TO
MIDNIGHT EDT FRIDAY NIGHT...

* WIND AND WAVES: DURING THE SMALL CRAFT ADVISORY...EXPECT
  SUSTAINED WINDS UP TO 21 KNOTS FROM THE EAST WITH GUSTS UP TO
  26 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 11 PM EDT
  THURSDAY WITH THE LARGEST WAVES EXPECTED AROUND 4 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.

&&

$$

BT



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