Marine Weather Message
Issued by NWS Detroit/Pontiac, MI

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000
WHUS73 KDTX 230747
MWWDTX

URGENT - MARINE WEATHER MESSAGE
NATIONAL WEATHER SERVICE DETROIT/PONTIAC MI
347 AM EDT SUN JUL 23 2017

...NORTHEAST WINDS TO BRING BUILDING WAVES TONIGHT...

.A COLD FRONT WILL DROP THROUGH THE AREA LATE TODAY AND TONIGHT,
TRIGGERING SCATTERED SHOWERS AND THUNDERSTORMS ACROSS THE AREA AND
ALLOWING WINDS TO INCREASE FROM THE NORTHEAST OVER ALL OF LAKE
HURON. WINDS WILL THEN TURN NORTH LATE TONIGHT AND MONDAY AS THE
LOW TRACKS THROUGH THE EASTERN GREAT LAKES AND HIGH PRESSURE
BUILDS INTO THE UPPER MIDWEST AND THEN FINALLY INTO MICHIGAN LATE.

WHILE WINDS WILL INCREASE OVER ALL MARINE AREAS, LAKE HURON WILL
ONCE AGAIN BECOME THE FOCUS FOR CONCERN AS GUSTS TOP 20 KNOTS AND
THE LONG FETCH OVER THE WATER ALLOWS WAVE HEIGHTS TO GROW IN
EXCESS OF 4 FEET OVER SAGINAW BAY AND ACROSS THE NEARSHORE WATERS
FROM PORT AUSTIN TO HARBOR BEACH. SMALL CRAFT ADVISORIES ARE IN
EFFECT LATE TONIGHT THROUGH MONDAY. HIGH PRESSURE SETTLING IN
OVERHEAD WILL THEN ALLOW FOR LIGHT WINDS AND IMPROVING WAVE
CONDITIONS BY MONDAY NIGHT.

LHZ421-422-441-232000-
/O.NEW.KDTX.SC.Y.0052.170724T1200Z-170725T0000Z/
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-
347 AM EDT SUN JUL 23 2017

...SMALL CRAFT ADVISORY IN EFFECT FROM 8 AM TO 8 PM EDT MONDAY...

THE NATIONAL WEATHER SERVICE IN DETROIT/PONTIAC HAS ISSUED A
SMALL CRAFT ADVISORY WHICH IS IN EFFECT FROM 8 AM TO 8 PM EDT
MONDAY.

* WIND AND WAVES: DURING THE SMALL CRAFT ADVISORY...EXPECT
  SUSTAINED WINDS UP TO 18 KNOTS FROM THE NORTHEAST WITH GUSTS
  UP TO 25 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 8 AM EDT MONDAY
  WITH THE LARGEST WAVES EXPECTED AROUND 8 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.

&&

$$

DG



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