Marine Weather Message
Issued by NWS Detroit/Pontiac, MI

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384
WHUS73 KDTX 260745
MWWDTX

URGENT - MARINE WEATHER MESSAGE
NATIONAL WEATHER SERVICE DETROIT/PONTIAC MI
345 AM EDT MON SEP 26 2016

...STRONG SOUTHWEST WINDS AROUND 30 KNOTS TODAY AND TUESDAY...

.SMALL CRAFT ADVISORIES REMAIN IN EFFECT THROUGH TUESDAY EVENING.
FRESH SOUTHEASTERLY FLOW IN ADVANCE OF A LOW PRESSURE SYSTEM OVER
WESTERN ONTARIO WILL VEER TO THE WEST AFTER DAYBREAK AS A SURFACE
COLD FRONT TRACKS THROUGH THE REGION.

FORECAST INFORMATION CONTINUES TO SUPPORT THAT WIND GUSTS OVER THE
OPEN WATERS OF LAKE HURON WILL TOP OUT IN THE LOWER 30 KNOT RANGE,
REMAINING JUST BELOW GALE LEVELS. WEST WINDS OF 30 KNOTS WILL
CONTINUE THROUGH TONIGHT BEFORE EASING SLIGHTLY INTO THE 25 TO 30
KNOT RANGE FOR ALL OF TUESDAY. WILL CONTINUE TO FORGO A GALE WARNING
AND WILL CONTINUE TO MONITOR MARINE OBSERVATIONS.

THE LARGE UPPER LEVEL LOW PRESSURE SYSTEM WILL TRACK SOUTHWARD
ACROSS THE CENTRAL GREAT LAKES TUESDAY AND TUESDAY NIGHT. THE LOW
PRESSURE WILL MAINTAIN VERY UNSETTLED CONDITIONS THROUGH THE MIDDLE
OF THE UPCOMING WEEK. THE COLD AIRMASS ASSOCIATED WITH THIS PATTERN
WILL BE CONDUCIVE TO THUNDERSTORM DEVELOPMENT AND POSSIBLE
WATERSPOUTS AS INSTABILITY INCREASE ABOVE THE RELATIVELY MILD WATERS
OF THE GREAT LAKES.

LCZ460-LEZ444-261945-
/O.CON.KDTX.SC.Y.0054.160926T1800Z-160928T0200Z/
LAKE ST. CLAIR-
MICHIGAN WATERS OF LAKE ERIE FROM DETROIT RIVER TO NORTH CAPE MI-
345 AM EDT MON SEP 26 2016

...SMALL CRAFT ADVISORY REMAINS IN EFFECT FROM 2 PM THIS
AFTERNOON TO 10 PM EDT TUESDAY...

* WIND AND WAVES: DURING THE SMALL CRAFT ADVISORY...EXPECT
  SUSTAINED WINDS UP TO 20 KNOTS FROM THE SOUTHWEST WITH GUSTS
  UP TO 28 KNOTS. THE LARGEST EXPECTED SIGNIFICANT WAVES WILL
  BE 3 FEET WITH A POTENTIAL MAXIMUM WAVE HEIGHT OF 4 FEET.

* TIMING: THE MAXIMUM WINDS ARE EXPECTED AROUND 2 PM EDT TUESDAY
  WITH THE LARGEST WAVES EXPECTED AROUND 3 PM EDT TUESDAY.

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>443-261945-
/O.CON.KDTX.SC.Y.0054.000000T0000Z-160928T0200Z/
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-
345 AM EDT MON SEP 26 2016

...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 10 PM EDT
TUESDAY...

* WIND AND WAVES: DURING THE SMALL CRAFT ADVISORY...EXPECT
  SUSTAINED WINDS UP TO 26 KNOTS FROM THE WEST WITH GUSTS UP TO
  32 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 6 PM EDT MONDAY
  WITH THE LARGEST WAVES EXPECTED AROUND 4 AM EDT MONDAY.

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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