Marine Weather Message
Issued by NWS Detroit/Pontiac, MI

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000
WHUS73 KDTX 271941
MWWDTX

URGENT - MARINE WEATHER MESSAGE
NATIONAL WEATHER SERVICE DETROIT/PONTIAC MI
341 PM EDT TUE SEP 27 2016

...SOUTHWEST FLOW TO EASE LATER THIS EVENING...

.SMALL CRAFT ADVISORIES REMAIN IN EFFECT INTO THIS EVENING FOR ALL
MARINE AREAS OF SOUTHEASTERN MICHIGAN AS SOUTHWEST FLOW AROUND AN
UPPER LOW REMAINS GUSTY THROUGH THE DAYLIGHT HOURS. WAVE ACTION WILL
BEGIN TO DIMINISH LATE TODAY, BUT REMAIN IN THE 5 TO 7 FOOT RANGE
OVER THE OPEN WATERS OF CENTRAL LAKE HURON THIS THIS EVENING.

THIS LOW PRESSURE WILL THEN STALL SOUTH OF THE GREAT LAKES FOR THE
REST OF THE WEEK. INCREASING EAST TO NORTHEAST FLOW AROUND THIS
SYSTEM WILL LEAD TO THE RETURN OF SMALL CRAFT ADVISORY CONDITIONS BY
WEDNESDAY NIGHT. THESE CONDITIONS WILL THEN PERSIST FOR THE REST OF
THE WEEK WITH WIND GUSTS TO 25 KNOTS OR BETTER AT TIMES AND HIGH
WAVE ACTION WITHIN THE ONSHORE FLOW.

A STEADY FLOW OF MOISTURE AROUND THE EAST AND NORTHEAST SIDE OF THIS
UPPER LOW WILL MAINTAIN VERY UNSETTLED CONDITIONS ACROSS THE CENTRAL
GREAT LAKES WITH WIDESPREAD SHOWER ACTIVITY AND EMBEDDED THUNDER AT
TIMES. WATERSPOUT CHANCES WILL ALSO INCREASE INTO WEDNESDAY AS THE
CHANCE FOR CONVECTION EXPANDS. IN FACT, THERE APPEARS TO BE A PRETTY
DECENT CHANCE AT A FEW WATERSPOUTS OVER PARTS OF THE AREA WEDNESDAY
AS OVER WATER INSTABILITY BECOMES RATHER IMPRESSIVE. THIS SEEMS MOST
LIKELY OVER PARTS OF LAKE ERIE WHERE THE COVERAGE OF SHOWERS AND/OR
STORMS WILL BE MOST ROBUST.

LCZ460-LEZ444-280200-
/O.CON.KDTX.SC.Y.0054.000000T0000Z-160928T0200Z/
LAKE ST. CLAIR-
MICHIGAN WATERS OF LAKE ERIE FROM DETROIT RIVER TO NORTH CAPE MI-
341 PM EDT TUE SEP 27 2016

...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 10 PM EDT THIS
EVENING...

* WIND AND WAVES: DURING THE SMALL CRAFT ADVISORY...EXPECT
  SUSTAINED WINDS UP TO 22 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 3 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>443-280200-
/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-
341 PM EDT TUE SEP 27 2016

...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 10 PM EDT THIS
EVENING...

* WIND AND WAVES: DURING THE SMALL CRAFT ADVISORY...EXPECT
  SUSTAINED WINDS UP TO 19 KNOTS FROM THE SOUTHWEST 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 3 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.

&&

$$

DG



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