431 WHUS73 KDTX 150250 MWWDTX URGENT - MARINE WEATHER MESSAGE NATIONAL WEATHER SERVICE DETROIT/PONTIAC MI 950 PM EST TUE NOV 14 2017 ...GALES EXPECTED LATE WEDNESDAY INTO THURSDAY... .THE GALE WATCH HAS BEEN UPGRADED TO A GALE WARNING OVER THE LAKE HURON OPEN WATERS FOR LATE WEDNESDAY AND THURSDAY. SMALL CRAFT ADVISORIES WILL ALSO BE ISSUED FOR THE NEARSHORE WATERS AND LAKE ST CLAIR. SOUTHERLY WINDS WILL INCREASE LATE TONIGHT INTO WEDNESDAY MORNING WITHIN TIGHTENING PRESSURE GRADIENT BETWEEN HIGH PRESSURE OVER THE NEW ENGLAND STATES AND LOW PRESSURE AND THE ATTENDING COLD FRONT APPROACHING THROUGH THE UPPER MIDWEST. WHILE THIS RELATIVELY MILD SOUTHERLY FLOW WILL LEAD TO INCREASING STABILITY, IT STILL APPEARS THAT WIND SPEEDS WILL REACH 20 TO 30 KNOTS OVER PARTS OF THE OPEN WATERS BY EARLY WEDNESDAY MORNING. SIMILAR WIND SPEEDS CONTINUE INTO WEDNESDAY EVENING, VEERING TO THE SOUTHWEST AS THE AFOREMENTIONED LOW PRESSURE TRACKS TO NEAR NORTHERN LAKE HURON AND THE COLD FRONT SWEEPS THROUGH THE REGION. GREATER INSTABILITY WITHIN COLDER NORTHWEST FLOW IN THE WAKE OF THIS SYSTEM WILL LEAD TO A SECOND MAXIMUM IN WIND GUST POTENTIAL LATE WEDNESDAY NIGHT INTO THURSDAY MORNING. DURING THIS TIME FRAME, WIND GUSTS OVER PARTS OF THE OPEN WATERS MAY REACH 40 KNOTS. LHZ361>363-462>464-151500- /O.EXT.KDTX.GL.W.0033.171115T2300Z-171116T2200Z/ LAKE HURON FROM 5NM EAST OF MACKINAC BRIDGE TO PRESQUE ISLE LT BEYOND 5 NM OFF SHORE- 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- 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- 950 PM EST TUE NOV 14 2017 ...GALE WARNING NOW IN EFFECT FROM 6 PM WEDNESDAY TO 5 PM EST THURSDAY... THE GALE WARNING IS NOW IN EFFECT FROM 6 PM WEDNESDAY TO 5 PM EST THURSDAY. * WIND AND WAVES: DURING THE GALE WARNING...EXPECT SUSTAINED WINDS UP TO 33 KNOTS FROM THE NORTHWEST WITH GUSTS UP TO 43 KNOTS. THE LARGEST EXPECTED SIGNIFICANT WAVES WILL BE 14 FEET WITH A POTENTIAL MAXIMUM WAVE HEIGHT OF 20 FEET. * TIMING: THE MAXIMUM WINDS ARE EXPECTED AROUND 6 AM EST THURSDAY WITH THE LARGEST WAVES EXPECTED AROUND 9 AM EST THURSDAY. REFER TO THE LATEST MARINE FORECASTS FOR GREATER DETAIL. PRECAUTIONARY/PREPAREDNESS ACTIONS... A GALE WARNING MEANS WINDS OF 34 TO 47 KNOTS ARE IMMINENT OR OCCURING. OPERATING A VESSEL IN GALE CONDITIONS REQUIRES EXPERIENCE AND PROPERLY EQUIPPED VESSELS. IT IS HIGHLY RECOMMENDED THAT MARINERS WITHOUT THE PROPER EXPERIENCE SEEK SAFE HARBOR PRIOR TO THE ONSET OF GALE CONDITIONS. && $$ LCZ460-LEZ444-LHZ421-422-441>443-151500- /O.EXT.KDTX.SC.Y.0078.171115T2300Z-171116T2200Z/ LAKE ST CLAIR- MICHIGAN WATERS OF LAKE ERIE FROM DETROIT RIVER TO NORTH CAPE MI- OUTER SAGINAW BAY SW OF ALABASTER TO PORT AUSTIN MI TO INNER SAGINAW BAY-INNER SAGINAW BAY SW OF POINT AU GRES TO BAY PORT MI- PORT AUSTIN TO HARBOR BEACH MI-HARBOR BEACH TO PORT SANILAC MI- PORT SANILAC TO PORT HURON MI- 950 PM EST TUE NOV 14 2017 ...SMALL CRAFT ADVISORY NOW IN EFFECT FROM 6 PM WEDNESDAY TO 5 PM EST THURSDAY... THE SMALL CRAFT ADVISORY IS NOW IN EFFECT FROM 6 PM WEDNESDAY TO 5 PM EST THURSDAY. * WIND AND WAVES: DURING THE SMALL CRAFT ADVISORY...EXPECT SUSTAINED WINDS UP TO 26 KNOTS FROM THE WEST WITH GUSTS UP TO 34 KNOTS. THE LARGEST EXPECTED SIGNIFICANT WAVES WILL BE 9 FEET WITH A POTENTIAL MAXIMUM WAVE HEIGHT OF 13 FEET. * TIMING: THE MAXIMUM WINDS ARE EXPECTED AROUND 3 AM EST THURSDAY WITH THE LARGEST WAVES EXPECTED AROUND 12 PM EST THURSDAY. REFER TO THE LATEST MARINE FORECASTS FOR GREATER DETAIL. PRECAUTIONARY/PREPAREDNESS ACTIONS... A SMALL CRAFT ADVISORY MEANS THAT WIND SPEEDS OF 21 TO 33 KNOTS ARE EXPECTED TO PRODUCE HAZARDOUS WAVE CONDITIONS TO SMALL CRAFT. INEXPERIENCED MARINERS...ESPECIALLY THOSE OPERATING SMALLER VESSELS SHOULD AVOID NAVIGATING IN THESE CONDITIONS. && $$ SC