Marine Weather Message
Issued by NWS Detroit/Pontiac, MI

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000
WHUS73 KDTX 200240
MWWDTX

URGENT - MARINE WEATHER MESSAGE
NATIONAL WEATHER SERVICE DETROIT/PONTIAC MI
940 PM EST SUN NOV 19 2017

...GALES ARE POSSIBLE ON LAKE HURON MONDAY NIGHT AND TUESDAY...

.A GALE WATCH REMAINS IN EFFECT MONDAY NIGHT INTO TUESDAY AS
WINDS BACK FURTHER TO THE SOUTHWEST AND INCREASE AS LOW PRESSURE
TRACKS ACROSS NORTHERN ONTARIO AND LEADS TO AN STRONG PRESSURE
GRADIENT AS THE TRAILING COLD FRONT APPROACHES ON TUESDAY. WIND
FUNNELING UP SAGINAW BAY LOOKS AS IF IT MAY BE ENOUGH TO BRING
GALE FORCE GUSTS TO THE BAY AS WELL, SO THE WATCH HAS BEEN
EXTENDED FOR THIS AREA. NORTHWEST FLOW BEHIND THE AFOREMENTIONED
COLD FRONT MAY VERY WELL LEAD TO A PERIOD OF GALES INTO TUESDAY
NIGHT, AT LEAST OVER FAR NORTHERN PORTIONS OF LAKE HURON.

LHZ421-201445-
/O.CAN.KDTX.SC.Y.0080.000000T0000Z-171120T0300Z/
/O.CON.KDTX.GL.A.0032.171121T0000Z-171121T1800Z/
OUTER SAGINAW BAY SW OF ALABASTER TO PORT AUSTIN MI TO INNER
SAGINAW BAY-
940 PM EST SUN NOV 19 2017

...GALE WATCH REMAINS IN EFFECT FROM MONDAY EVENING THROUGH
TUESDAY AFTERNOON...
...SMALL CRAFT ADVISORY IS CANCELLED...

THE NATIONAL WEATHER SERVICE IN DETROIT/PONTIAC HAS CANCELLED THE
SMALL CRAFT ADVISORY.

* WIND AND WAVES: DURING THE GALE WATCH...EXPECT SUSTAINED WINDS
  UP TO 28 KNOTS FROM THE SOUTHWEST WITH GUSTS UP TO 39 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 2 AM EST TUESDAY
  WITH THE LARGEST WAVES EXPECTED AROUND 4 AM EST TUESDAY.

REFER TO THE LATEST MARINE FORECASTS FOR GREATER DETAIL.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A GALE WATCH IS ISSUED WHEN THE RISK OF GALE FORCE WINDS OF 34 TO
47 KNOTS HAS SIGNIFICANTLY INCREASED...BUT THE SPECIFIC TIMING
AND/OR LOCATION IS STILL UNCERTAIN. IT IS INTENDED TO PROVIDE
ADDITIONAL LEAD TIME FOR MARINERS WHO MAY WISH TO CONSIDER
ALTERING THEIR PLANS.

&&

$$

LHZ441-200345-
/O.CAN.KDTX.SC.Y.0080.000000T0000Z-171120T0300Z/
PORT AUSTIN TO HARBOR BEACH MI-
940 PM EST SUN NOV 19 2017

...SMALL CRAFT ADVISORY IS CANCELLED...

THE NATIONAL WEATHER SERVICE IN DETROIT/PONTIAC HAS CANCELLED THE
SMALL CRAFT ADVISORY.

$$

LHZ362-363-422-462>464-201445-
/O.CON.KDTX.GL.A.0032.171121T0000Z-171121T1800Z/
LAKE HURON FROM PRESQUE ISLE LIGHT TO STURGEON POINT MI BEYOND
5NM OFF SHORE-
LAKE HURON FROM STURGEON POINT TO ALABASTER MI BEYOND 5NM OFF
SHORE-INNER SAGINAW BAY SW OF POINT AU GRES TO BAY PORT MI-
LAKE HURON FROM PORT AUSTIN TO HARBOR BEACH BEYOND 5NM OFF SHORE-
LAKE HURON FROM HARBOR BEACH TO PORT SANILAC BEYOND 5NM OFF SHORE-
LAKE HURON FROM PORT SANILAC TO PORT HURON BEYOND 5NM OFF SHORE-
940 PM EST SUN NOV 19 2017

...GALE WATCH REMAINS IN EFFECT FROM MONDAY EVENING THROUGH
TUESDAY AFTERNOON...

* WIND AND WAVES: DURING THE GALE WATCH...EXPECT SUSTAINED WINDS
  UP TO 31 KNOTS FROM THE SOUTHWEST WITH GUSTS UP TO 41 KNOTS.
  THE LARGEST EXPECTED SIGNIFICANT WAVES WILL BE 12 FEET WITH A
  POTENTIAL MAXIMUM WAVE HEIGHT OF 17 FEET.

* TIMING: THE MAXIMUM WINDS ARE EXPECTED AROUND 3 AM EST TUESDAY
  WITH THE LARGEST WAVES EXPECTED AROUND 5 AM EST TUESDAY.

REFER TO THE LATEST MARINE FORECASTS FOR GREATER DETAIL.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A GALE WATCH IS ISSUED WHEN THE RISK OF GALE FORCE WINDS OF 34 TO
47 KNOTS HAS SIGNIFICANTLY INCREASED...BUT THE SPECIFIC TIMING
AND/OR LOCATION IS STILL UNCERTAIN. IT IS INTENDED TO PROVIDE
ADDITIONAL LEAD TIME FOR MARINERS WHO MAY WISH TO CONSIDER
ALTERING THEIR PLANS.

&&

$$

SC



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