Marine Weather Message
Issued by NWS Detroit/Pontiac, MI

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WHUS73 KDTX 312233
MWWDTX

URGENT - MARINE WEATHER MESSAGE
NATIONAL WEATHER SERVICE DETROIT/PONTIAC MI
633 PM EDT WED AUG 31 2016

...PROLONGED NORTHERLY WINDS TO BRING HIGH WAVES...

.NORTHERLY WINDS WILL INCREASE TONIGHT AND THURSDAY AS A SECOND COLD
FRONT DROPS THROUGH THE CENTRAL GREAT LAKES. WINDS WILL BE STRONGEST
OVER LAKE HURON, WHERE GUSTS WILL REACH BETWEEN 25 AND 30 KNOTS. IN
ADDITION TO THE GUSTY WINDS, THE LONG FETCH OVER THE LENGTH OF THE
LAKE WILL ALLOW WAVE HEIGHTS TO BUILD BETWEEN 3 TO 5 FEET OVER
SOUTHERN LAKE HURON TONIGHT. A SMALL CRAFT ADVISORY REMAINS IN
EFFECT FOR THE SOUTHERN LAKE HURON NEARSHORE WATERS WITH THE
EXCEPTION OF INNER SAGINAW BAY. WINDS WILL GRADUALLY DECREASE OVER
THE REGION THURSDAY NIGHT AND EARLY FRIDAY AS HIGH PRESSURE SLOWLY
BUILDS INTO THE AREA. HIGH PRESSURE WILL REMAIN IN CONTROL THROUGH
THE WEEKEND, BRINGING DRY QUIET WEATHER AND NO MARINE CONCERNS.

THE DEEP LAYER OF COLD AIR SURGING SOUTHWARD OVER THE WARM LAKE
WATERS WILL ALSO SUPPORT WATERSPOUT DEVELOPMENT OVER ALL OF THE
CENTRAL GREAT LAKES BOTH TONIGHT AND THURSDAY. MULTIPLE WATERSPOUTS
WERE ALREADY OBSERVED WEDNESDAY AFTERNOON OVER LAKE SUPERIOR.

LHZ421-441-011045-
/O.EXT.KDTX.SC.Y.0051.160831T2233Z-160902T1200Z/
OUTER SAGINAW BAY SW OF ALABASTER TO PORT AUSTIN MI TO INNER
SAGINAW BAY-PORT AUSTIN TO HARBOR BEACH MI-
633 PM EDT WED AUG 31 2016

...SMALL CRAFT ADVISORY NOW IN EFFECT UNTIL 8 AM EDT FRIDAY...

THE SMALL CRAFT ADVISORY IS NOW IN EFFECT UNTIL 8 AM EDT FRIDAY.

* WIND AND WAVES: DURING THE SMALL CRAFT ADVISORY...EXPECT
  SUSTAINED WINDS UP TO 17 KNOTS FROM THE NORTH WITH GUSTS UP
  TO 22 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 11 PM EDT
  WEDNESDAY WITH THE LARGEST WAVES EXPECTED AROUND 1 AM 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.

&&

$$

LHZ442-443-011045-
/O.EXT.KDTX.SC.Y.0051.160831T2233Z-160902T1200Z/
HARBOR BEACH TO PORT SANILAC MI-PORT SANILAC TO PORT HURON MI-
633 PM EDT WED AUG 31 2016

...SMALL CRAFT ADVISORY NOW IN EFFECT UNTIL 8 AM EDT FRIDAY...

THE SMALL CRAFT ADVISORY IS NOW IN EFFECT UNTIL 8 AM EDT FRIDAY.

* WIND AND WAVES: DURING THE SMALL CRAFT ADVISORY...EXPECT
  SUSTAINED WINDS UP TO 17 KNOTS FROM THE NORTH WITH GUSTS UP
  TO 22 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 3 PM EDT
  THURSDAY WITH THE LARGEST WAVES EXPECTED AROUND 12 AM 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.

&&

$$

DG



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