Gale Warning 18, NWS Detroit, MI

774 
WHUS73 KDTX 052005
MWWDTX

URGENT - MARINE WEATHER MESSAGE
NATIONAL WEATHER SERVICE DETROIT/PONTIAC MI
405 PM EDT WED APR 5 2017

...STRONG GALE EVENT WITH STORM FORCE POSSIBLE LATE TONIGHT 
THROUGH FRIDAY MORNING...

.THE FOCUS FOR MARINE WEATHER REMAINS SQUARELY ON THE POWERFUL EARLY 
SPRING LOW PRESSURE SYSTEM THAT IS EXPECTED TO TRACK THROUGH THE 
CENTRAL GREAT LAKES ON THURSDAY. THE TRACK OF THE LOW REMAINS AN 
OPTIMAL FOR HIGHEST IMPACTS TO BE OBSERVED OVER THE CENTRAL LAKE 
HURON BASIN INCLUDING SAGINAW BAY. GALE WARNINGS ARE NOW IN EFFECT 
FOR ALL MARINE ZONES INCLUDING LAKE ST CLAIR AND THE MICHIGAN WATERS 
OF LAKE HURON. STORM FORCE WINDS REMAIN POSSIBLE OVER THE CENTRAL 
LAKE HURON WATERS WITH A LONG FETCH OFF OF GEORGIAN BAY. A STORM 
WATCH REMAINS IN EFFECT. THE STRONGEST WINDS, OF UP TO 50 KNOTS, ARE 
FORECASTED TO OCCUR BETWEEN 12Z THURSDAY THROUGH APPROXIMATELY 14Z 
FRIDAY MORNING. LATEST INDICATIONS ARE THAT SIGNIFICANT WAVE HEIGHTS 
WILL BUILD BETWEEN 14 AND 17 FEET OVER MUCH OF THE SOUTHERN LAKE 
HURON BASIN.

LEZ444-060815-
/O.CON.KDTX.SC.Y.0026.000000T0000Z-170406T0200Z/
/O.UPG.KDTX.GL.A.0017.170406T1800Z-170407T1500Z/
/O.NEW.KDTX.GL.W.0019.170406T2000Z-170407T1400Z/
MICHIGAN WATERS OF LAKE ERIE FROM DETROIT RIVER TO NORTH CAPE MI-
405 PM EDT WED APR 5 2017

...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 10 PM EDT THIS
EVENING...
...GALE WARNING IN EFFECT FROM 4 PM THURSDAY TO 10 AM EDT
FRIDAY...

THE NATIONAL WEATHER SERVICE IN DETROIT/PONTIAC HAS ISSUED A GALE
WARNING...WHICH IS IN EFFECT FROM 4 PM THURSDAY TO 10 AM EDT
FRIDAY. 

* WIND AND WAVES: DURING THE GALE WARNING...EXPECT SUSTAINED 
  WINDS UP TO 29 KNOTS FROM THE NORTHWEST WITH GUSTS UP TO 42 
  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 8 PM EDT 
  THURSDAY WITH THE LARGEST WAVES EXPECTED AROUND 9 PM EDT 
  THURSDAY. 

* WIND AND WAVES: DURING THE SMALL CRAFT ADVISORY...EXPECT 
  SUSTAINED WINDS UP TO 23 KNOTS FROM THE NORTHEAST WITH GUSTS 
  UP TO 29 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 9 PM EDT 
  WEDNESDAY WITH THE LARGEST WAVES EXPECTED AROUND 9 PM EDT 
  WEDNESDAY. 

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.

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.

&&

$$

LCZ460-060815-
/O.UPG.KDTX.GL.A.0017.170406T1800Z-170407T1500Z/
/O.NEW.KDTX.GL.W.0019.170406T2000Z-170407T1400Z/
LAKE ST. CLAIR-
405 PM EDT WED APR 5 2017

...GALE WARNING IN EFFECT FROM 4 PM THURSDAY TO 10 AM EDT
FRIDAY...

THE NATIONAL WEATHER SERVICE IN DETROIT/PONTIAC HAS ISSUED A GALE
WARNING...WHICH IS IN EFFECT FROM 4 PM THURSDAY TO 10 AM EDT
FRIDAY. 

* WIND AND WAVES: DURING THE GALE WARNING...EXPECT SUSTAINED 
  WINDS UP TO 33 KNOTS FROM THE NORTH WITH GUSTS UP TO 44 
  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 8 PM EDT 
  THURSDAY WITH THE LARGEST WAVES EXPECTED AROUND 8 PM EDT 
  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.

&&

$$

LHZ361-060815-
/O.EXB.KDTX.GL.W.0018.170406T0800Z-170407T1400Z/
/O.UPG.KDTX.GL.A.0017.170406T1200Z-170407T1500Z/
LAKE HURON FROM 5NM EAST OF MACKINAC BRIDGE TO PRESQUE ISLE LT
BEYOND 5 NM OFF SHORE-
405 PM EDT WED APR 5 2017

...GALE WARNING IN EFFECT FROM 4 AM THURSDAY TO 10 AM EDT
FRIDAY...

THE NATIONAL WEATHER SERVICE IN DETROIT/PONTIAC HAS ISSUED A GALE
WARNING...WHICH IS IN EFFECT FROM 4 AM THURSDAY TO 10 AM EDT
FRIDAY. 

* WIND AND WAVES: DURING THE GALE WARNING...EXPECT SUSTAINED 
  WINDS UP TO 31 KNOTS FROM THE NORTH WITH GUSTS UP TO 42 
  KNOTS. THE LARGEST EXPECTED SIGNIFICANT WAVES WILL BE 8 FEET 
  WITH A POTENTIAL MAXIMUM WAVE HEIGHT OF 11 FEET. 

* TIMING: THE MAXIMUM WINDS ARE EXPECTED AROUND 7 PM EDT 
  THURSDAY WITH THE LARGEST WAVES EXPECTED AROUND 1 PM EDT 
  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.

&&

$$

LHZ421-422-060815-
/O.EXT.KDTX.GL.W.0018.170406T0000Z-170406T0800Z/
/O.EXT.KDTX.SR.A.0001.170406T0800Z-170407T0200Z/
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-
405 PM EDT WED APR 5 2017

...GALE WARNING NOW IN EFFECT FROM 8 PM THIS EVENING TO 4 AM EDT
THURSDAY...
...STORM WATCH NOW IN EFFECT FROM 4 AM EDT THURSDAY THROUGH
THURSDAY EVENING...

THE GALE WARNING IS NOW IN EFFECT FROM 8 PM THIS EVENING TO 4 AM
EDT THURSDAY. 

* WIND AND WAVES: DURING THE GALE WARNING...EXPECT SUSTAINED 
  WINDS UP TO 33 KNOTS FROM THE NORTHEAST WITH GUSTS UP TO 45 
  KNOTS. THE LARGEST EXPECTED SIGNIFICANT WAVES WILL BE 8 FEET 
  WITH A POTENTIAL MAXIMUM WAVE HEIGHT OF 11 FEET. 

* TIMING: THE MAXIMUM WINDS ARE EXPECTED AROUND 3 AM EDT 
  THURSDAY WITH THE LARGEST WAVES EXPECTED AROUND 3 AM EDT 
  THURSDAY. 

THE STORM WATCH IS NOW IN EFFECT FROM 4 AM EDT THURSDAY THROUGH
THURSDAY EVENING. 

* WIND AND WAVES: DURING THE STORM WATCH...EXPECT SUSTAINED 
  WINDS UP TO 40 KNOTS FROM THE NORTHEAST WITH GUSTS UP TO 48 
  KNOTS. THE LARGEST EXPECTED SIGNIFICANT WAVES WILL BE 16 FEET 
  WITH A POTENTIAL MAXIMUM WAVE HEIGHT OF 23 FEET. 

* TIMING: THE MAXIMUM WINDS ARE EXPECTED AROUND 8 AM EDT 
  THURSDAY WITH THE LARGEST WAVES EXPECTED AROUND 12 PM EDT 
  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.

A STORM WATCH IS ISSUED WHEN THE RISK OF STORM FORCE WINDS OF
48 TO 63 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.

&&

$$

LHZ362-363-441-442-462-463-060815-
/O.EXT.KDTX.GL.W.0018.170406T0000Z-170406T0800Z/
/O.EXT.KDTX.SR.A.0001.170406T0800Z-170407T1400Z/
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-PORT AUSTIN TO HARBOR BEACH MI-
HARBOR BEACH TO PORT SANILAC 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-
405 PM EDT WED APR 5 2017

...GALE WARNING NOW IN EFFECT FROM 8 PM THIS EVENING TO 4 AM EDT
THURSDAY...
...STORM WATCH NOW IN EFFECT FROM 4 AM EDT THURSDAY THROUGH
FRIDAY MORNING...

THE GALE WARNING IS NOW IN EFFECT FROM 8 PM THIS EVENING TO 4 AM
EDT THURSDAY. 

* WIND AND WAVES: DURING THE GALE WARNING...EXPECT SUSTAINED 
  WINDS UP TO 33 KNOTS FROM THE NORTHEAST WITH GUSTS UP TO 45 
  KNOTS. THE LARGEST EXPECTED SIGNIFICANT WAVES WILL BE 8 FEET 
  WITH A POTENTIAL MAXIMUM WAVE HEIGHT OF 11 FEET. 

* TIMING: THE MAXIMUM WINDS ARE EXPECTED AROUND 3 AM EDT 
  THURSDAY WITH THE LARGEST WAVES EXPECTED AROUND 3 AM EDT 
  THURSDAY. 

THE STORM WATCH IS NOW IN EFFECT FROM 4 AM EDT THURSDAY THROUGH
FRIDAY MORNING. 

* WIND AND WAVES: DURING THE STORM WATCH...EXPECT SUSTAINED 
  WINDS UP TO 39 KNOTS FROM THE NORTHEAST WITH GUSTS UP TO 49 
  KNOTS. THE LARGEST EXPECTED SIGNIFICANT WAVES WILL BE 17 FEET 
  WITH A POTENTIAL MAXIMUM WAVE HEIGHT OF 24 FEET. 

* TIMING: THE MAXIMUM WINDS ARE EXPECTED AROUND 11 AM EDT 
  THURSDAY WITH THE LARGEST WAVES EXPECTED AROUND 6 AM EDT 
  FRIDAY. 

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.

A STORM WATCH IS ISSUED WHEN THE RISK OF STORM FORCE WINDS OF
48 TO 63 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.

&&

$$

LHZ443-464-060815-
/O.EXT.KDTX.SR.A.0001.170406T0800Z-170407T1400Z/
PORT SANILAC TO PORT HURON MI-
LAKE HURON FROM PORT SANILAC TO PORT HURON BEYOND 5NM OFF SHORE-
405 PM EDT WED APR 5 2017

...STORM WATCH NOW IN EFFECT FROM 4 AM EDT THURSDAY THROUGH
FRIDAY MORNING...

THE STORM WATCH IS NOW IN EFFECT FROM 4 AM EDT THURSDAY THROUGH
FRIDAY MORNING. 

* WIND AND WAVES: DURING THE STORM WATCH...EXPECT SUSTAINED 
  WINDS UP TO 36 KNOTS FROM THE NORTH WITH GUSTS UP TO 48 
  KNOTS. THE LARGEST EXPECTED SIGNIFICANT WAVES WILL BE 16 FEET 
  WITH A POTENTIAL MAXIMUM WAVE HEIGHT OF 23 FEET. 

* TIMING: THE MAXIMUM WINDS ARE EXPECTED AROUND 10 PM EDT 
  THURSDAY WITH THE LARGEST WAVES EXPECTED AROUND 5 AM EDT 
  FRIDAY. 

REFER TO THE LATEST MARINE FORECASTS FOR GREATER DETAIL.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A STORM WATCH IS ISSUED WHEN THE RISK OF STORM FORCE WINDS OF
48 TO 63 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.

&&

$$

CB

873 
WHUS73 KDTX 060803
MWWDTX

URGENT - MARINE WEATHER MESSAGE
NATIONAL WEATHER SERVICE DETROIT/PONTIAC MI
403 AM EDT THU APR 6 2017

...GALES TODAY THROUGH FRIDAY MORNING...
...STORMS TONIGHT OVER CENTRAL AND SOUTHERN LAKE HURON...

.A POWERFUL EARLY SPRING LOW PRESSURE SYSTEM REMAINS SET TO IMPACT 
THE GREAT LAKES TODAY THROUGH FRIDAY. THE PRIMARY FORECAST 
ADJUSTMENT IS TO ISSUE THE STORM WARNING FOR CENTRAL AND SOUTHERN 
LAKE HURON TONIGHT AS COLDER AIR MOVES IN THROUGH THE LOW LEVELS AND 
BUILDS ENOUGH INSTABILITY OVER THE WATER FOR FREQUENT 50 KNOT GUSTS.
GALE WARNINGS REMAIN IN EFFECT FOR ALL OTHER MARINE ZONES INCLUDING 
LAKE ST CLAIR AND THE MICHIGAN WATERS OF LAKE HURON. THE STRONGEST 
WINDS, OF UP TO 50 KNOTS, ARE FORECASTED TO OCCUR BETWEEN 00Z 
TONIGHT THROUGH APPROXIMATELY 14Z FRIDAY MORNING AS DIRECTION BACKS 
TOWARD THE NORTH AND PULLS COLDER AIR SOUTHWARD. LATEST INDICATIONS 
ARE THAT SIGNIFICANT WAVE HEIGHTS WILL BUILD BETWEEN 14 AND 17 FEET 
OVER MUCH OF THE SOUTHERN LAKE HURON BASIN WITH MAX WAVES 20 TO 25 
FEET POSSIBLE.

LHZ422-062045-
/O.EXT.KDTX.GL.W.0018.000000T0000Z-170407T1400Z/
/O.CAN.KDTX.SR.A.0001.000000T0000Z-170407T0200Z/
INNER SAGINAW BAY SW OF POINT AU GRES TO BAY PORT MI-
403 AM EDT THU APR 6 2017

...GALE WARNING NOW IN EFFECT UNTIL 10 AM EDT FRIDAY...
...STORM WATCH IS CANCELLED...

THE NATIONAL WEATHER SERVICE IN DETROIT/PONTIAC HAS CANCELLED THE
STORM WATCH. THE GALE WARNING IS NOW IN EFFECT UNTIL 10 AM EDT
FRIDAY. 

* WIND AND WAVES: DURING THE GALE WARNING...EXPECT SUSTAINED WINDS
  UP TO 39 KNOTS FROM THE NORTHEAST WITH GUSTS UP TO 45 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 8 AM EDT 
  THURSDAY WITH THE LARGEST WAVES EXPECTED AROUND 9 AM EDT 
  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.

&&

$$

LHZ362-363-441-442-462-463-062045-
/O.EXT.KDTX.GL.W.0018.000000T0000Z-170407T0000Z/
/O.UPG.KDTX.SR.A.0001.000000T0000Z-170407T1400Z/
/O.NEW.KDTX.SR.W.0003.170407T0000Z-170407T1400Z/
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-PORT AUSTIN TO HARBOR BEACH MI-
HARBOR BEACH TO PORT SANILAC 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-
403 AM EDT THU APR 6 2017

...GALE WARNING NOW IN EFFECT UNTIL 8 PM EDT THIS EVENING...
...STORM WARNING IN EFFECT FROM 8 PM THIS EVENING TO 10 AM EDT
FRIDAY...

THE NATIONAL WEATHER SERVICE IN DETROIT/PONTIAC HAS ISSUED A
STORM WARNING...WHICH IS IN EFFECT FROM 8 PM THIS EVENING TO
10 AM EDT FRIDAY. 

* WIND AND WAVES: DURING THE STORM WARNING...EXPECT SUSTAINED
  WINDS UP TO 37 KNOTS FROM THE NORTH WITH GUSTS UP TO 50 KNOTS.
  THE LARGEST EXPECTED SIGNIFICANT WAVES WILL BE 17 FEET WITH A
  POTENTIAL MAXIMUM WAVE HEIGHT OF 24 FEET. 

* TIMING: THE MAXIMUM WINDS ARE EXPECTED AROUND 8 PM EDT 
  THURSDAY WITH THE LARGEST WAVES EXPECTED AROUND 6 AM EDT 
  FRIDAY. 

THE GALE WARNING IS NOW IN EFFECT UNTIL 8 PM EDT THIS EVENING. 

* WIND AND WAVES: DURING THE GALE WARNING...EXPECT SUSTAINED 
  WINDS UP TO 37 KNOTS FROM THE NORTHEAST WITH GUSTS UP TO 47 
  KNOTS. THE LARGEST EXPECTED SIGNIFICANT WAVES WILL BE 17 FEET 
  WITH A POTENTIAL MAXIMUM WAVE HEIGHT OF 24 FEET. 

* TIMING: THE MAXIMUM WINDS ARE EXPECTED AROUND 11 AM EDT 
  THURSDAY WITH THE LARGEST WAVES EXPECTED AROUND 12 PM EDT 
  THURSDAY. 

REFER TO THE LATEST MARINE FORECASTS FOR GREATER DETAIL.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A STORM WARNING MEANS WINDS OF 48 TO 63 KNOTS ARE IMMINENT OR
OCCURING. RECREATIONAL BOATERS SHOULD REMAIN IN PORT...OR TAKE
SHELTER UNTIL WINDS AND WAVES SUBSIDE. COMMERCIAL VESSELS SHOULD
PREPARE FOR VERY STRONG WINDS AND DANGEROUS SEA CONDITIONS...AND
CONSIDER REMAINING IN PORT OR TAKING SHELTER IN PORT UNTIL WINDS
AND WAVES SUBSIDE.

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.

&&

$$

LHZ421-062045-
/O.EXT.KDTX.GL.W.0018.000000T0000Z-170407T0000Z/
/O.UPG.KDTX.SR.A.0001.000000T0000Z-170407T0200Z/
/O.NEW.KDTX.SR.W.0003.170407T0000Z-170407T1400Z/
OUTER SAGINAW BAY SW OF ALABASTER TO PORT AUSTIN MI TO INNER
SAGINAW BAY-
403 AM EDT THU APR 6 2017

...GALE WARNING NOW IN EFFECT UNTIL 8 PM EDT THIS EVENING...
...STORM WARNING IN EFFECT FROM 8 PM THIS EVENING TO 10 AM EDT
FRIDAY...

THE NATIONAL WEATHER SERVICE IN DETROIT/PONTIAC HAS ISSUED A
STORM WARNING...WHICH IS IN EFFECT FROM 8 PM THIS EVENING TO
10 AM EDT FRIDAY. 

* WIND AND WAVES: DURING THE STORM WARNING...EXPECT SUSTAINED 
  WINDS UP TO 37 KNOTS FROM THE NORTH WITH GUSTS UP TO 48 
  KNOTS. THE LARGEST EXPECTED SIGNIFICANT WAVES WILL BE 15 FEET 
  WITH A POTENTIAL MAXIMUM WAVE HEIGHT OF 22 FEET. 

* TIMING: THE MAXIMUM WINDS ARE EXPECTED AROUND 8 PM EDT 
  THURSDAY WITH THE LARGEST WAVES EXPECTED AROUND 9 PM EDT 
  THURSDAY. 

THE GALE WARNING IS NOW IN EFFECT UNTIL 8 PM EDT THIS EVENING. 

* WIND AND WAVES: DURING THE GALE WARNING...EXPECT SUSTAINED WINDS
  UP TO 37 KNOTS FROM THE NORTH WITH GUSTS UP TO 45 KNOTS. THE 
  LARGEST EXPECTED SIGNIFICANT WAVES WILL BE 16 FEET WITH A 
  POTENTIAL MAXIMUM WAVE HEIGHT OF 23 FEET. 

* TIMING: THE MAXIMUM WINDS ARE EXPECTED AROUND 10 AM EDT 
  THURSDAY WITH THE LARGEST WAVES EXPECTED AROUND 12 PM EDT 
  THURSDAY. 

REFER TO THE LATEST MARINE FORECASTS FOR GREATER DETAIL.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A STORM WARNING MEANS WINDS OF 48 TO 63 KNOTS ARE IMMINENT OR
OCCURING. RECREATIONAL BOATERS SHOULD REMAIN IN PORT...OR TAKE
SHELTER UNTIL WINDS AND WAVES SUBSIDE. COMMERCIAL VESSELS SHOULD
PREPARE FOR VERY STRONG WINDS AND DANGEROUS SEA CONDITIONS...AND
CONSIDER REMAINING IN PORT OR TAKING SHELTER IN PORT UNTIL WINDS
AND WAVES SUBSIDE.

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.

&&

$$

LHZ443-464-062045-
/O.UPG.KDTX.SR.A.0001.000000T0000Z-170407T1400Z/
/O.NEW.KDTX.SR.W.0003.170407T0000Z-170407T1400Z/
PORT SANILAC TO PORT HURON MI-
LAKE HURON FROM PORT SANILAC TO PORT HURON BEYOND 5NM OFF SHORE-
403 AM EDT THU APR 6 2017

...STORM WARNING IN EFFECT FROM 8 PM THIS EVENING TO 10 AM EDT
FRIDAY...

THE NATIONAL WEATHER SERVICE IN DETROIT/PONTIAC HAS ISSUED A
STORM WARNING...WHICH IS IN EFFECT FROM 8 PM THIS EVENING TO
10 AM EDT FRIDAY. 

* WIND AND WAVES: DURING THE STORM WARNING...EXPECT SUSTAINED
  WINDS UP TO 35 KNOTS FROM THE NORTH WITH GUSTS UP TO 50 KNOTS. 
  THE LARGEST EXPECTED SIGNIFICANT WAVES WILL BE 16 FEET WITH A 
  POTENTIAL MAXIMUM WAVE HEIGHT OF 23 FEET. 

* TIMING: THE MAXIMUM WINDS ARE EXPECTED AROUND 8 PM EDT 
  THURSDAY WITH THE LARGEST WAVES EXPECTED AROUND 12 AM EDT 
  FRIDAY. 

REFER TO THE LATEST MARINE FORECASTS FOR GREATER DETAIL.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A STORM WARNING MEANS WINDS OF 48 TO 63 KNOTS ARE IMMINENT OR
OCCURING. RECREATIONAL BOATERS SHOULD REMAIN IN PORT...OR TAKE
SHELTER UNTIL WINDS AND WAVES SUBSIDE. COMMERCIAL VESSELS SHOULD
PREPARE FOR VERY STRONG WINDS AND DANGEROUS SEA CONDITIONS...AND
CONSIDER REMAINING IN PORT OR TAKING SHELTER IN PORT UNTIL WINDS
AND WAVES SUBSIDE.

&&

$$

LCZ460-LEZ444-062045-
/O.CON.KDTX.GL.W.0019.170406T2000Z-170407T1400Z/
LAKE ST. CLAIR-
MICHIGAN WATERS OF LAKE ERIE FROM DETROIT RIVER TO NORTH CAPE MI-
403 AM EDT THU APR 6 2017

...GALE WARNING REMAINS IN EFFECT FROM 4 PM THIS AFTERNOON TO
10 AM EDT FRIDAY...

* WIND AND WAVES: DURING THE GALE WARNING...EXPECT SUSTAINED 
  WINDS UP TO 33 KNOTS FROM THE NORTH WITH GUSTS UP TO 44 
  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 8 PM EDT 
  THURSDAY WITH THE LARGEST WAVES EXPECTED AROUND 8 PM EDT 
  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.

&&

$$

LHZ361-062045-
/O.CON.KDTX.GL.W.0018.000000T0000Z-170407T1400Z/
LAKE HURON FROM 5NM EAST OF MACKINAC BRIDGE TO PRESQUE ISLE LT
BEYOND 5 NM OFF SHORE-
403 AM EDT THU APR 6 2017

...GALE WARNING REMAINS IN EFFECT UNTIL 10 AM EDT FRIDAY...

* WIND AND WAVES: DURING THE GALE WARNING...EXPECT SUSTAINED 
  WINDS UP TO 31 KNOTS FROM THE NORTH WITH GUSTS UP TO 42 
  KNOTS. THE LARGEST EXPECTED SIGNIFICANT WAVES WILL BE 8 FEET 
  WITH A POTENTIAL MAXIMUM WAVE HEIGHT OF 11 FEET. 

* TIMING: THE MAXIMUM WINDS ARE EXPECTED AROUND 8 PM EDT 
  THURSDAY WITH THE LARGEST WAVES EXPECTED AROUND 8 PM EDT 
  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.

&&

$$

BT

220 
WHUS73 KDTX 060811
MWWDTX

URGENT - MARINE WEATHER MESSAGE
NATIONAL WEATHER SERVICE DETROIT/PONTIAC MI
411 AM EDT THU APR 6 2017

...STORM FORCE WINDS...

.A POWERFUL EARLY SPRING LOW PRESSURE SYSTEM REMAINS SET TO IMPACT 
THE GREAT LAKES TODAY THROUGH FRIDAY. THE PRIMARY FORECAST 
ADJUSTMENT IS TO ISSUE THE STORM WARNING FOR CENTRAL AND SOUTHERN 
LAKE HURON TONIGHT AS COLDER AIR MOVES IN THROUGH THE LOW LEVELS AND 
BUILDS ENOUGH INSTABILITY OVER THE WATER FOR FREQUENT 50 KNOT GUSTS.
GALE WARNINGS REMAIN IN EFFECT FOR ALL OTHER MARINE ZONES INCLUDING 
LAKE ST CLAIR AND THE MICHIGAN WATERS OF LAKE HURON. THE STRONGEST 
WINDS, OF UP TO 50 KNOTS, ARE FORECASTED TO OCCUR BETWEEN 00Z 
TONIGHT THROUGH APPROXIMATELY 14Z FRIDAY MORNING AS DIRECTION BACKS 
TOWARD THE NORTH AND PULLS COLDER AIR SOUTHWARD. LATEST INDICATIONS 
ARE THAT SIGNIFICANT WAVE HEIGHTS WILL BUILD BETWEEN 14 AND 17 FEET 
OVER MUCH OF THE SOUTHERN LAKE HURON BASIN WITH MAX WAVES 20 TO 25 
FEET POSSIBLE.

LHZ362-363-441-442-462-463-062015-
/O.CON.KDTX.GL.W.0018.000000T0000Z-170407T0000Z/
/O.CON.KDTX.SR.W.0003.170407T0000Z-170407T1400Z/
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-PORT AUSTIN TO HARBOR BEACH MI-
HARBOR BEACH TO PORT SANILAC 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-
411 AM EDT THU APR 6 2017

...GALE WARNING REMAINS IN EFFECT UNTIL 8 PM EDT THIS EVENING...
...STORM WARNING REMAINS IN EFFECT FROM 8 PM THIS EVENING TO
10 AM EDT FRIDAY...

* WIND AND WAVES: DURING THE GALE WARNING...EXPECT SUSTAINED 
  WINDS UP TO 37 KNOTS FROM THE NORTHEAST WITH GUSTS UP TO 47 
  KNOTS. THE LARGEST EXPECTED SIGNIFICANT WAVES WILL BE 17 FEET 
  WITH A POTENTIAL MAXIMUM WAVE HEIGHT OF 24 FEET. 

* TIMING: THE MAXIMUM WINDS ARE EXPECTED AROUND 11 AM EDT 
  THURSDAY WITH THE LARGEST WAVES EXPECTED AROUND 12 PM EDT 
  THURSDAY. 

* WIND AND WAVES: DURING THE STORM WARNING...EXPECT SUSTAINED 
  WINDS UP TO 37 KNOTS FROM THE NORTH WITH GUSTS UP TO 49 KNOTS. 
  THE LARGEST EXPECTED SIGNIFICANT WAVES WILL BE 17 FEET WITH A 
  POTENTIAL MAXIMUM WAVE HEIGHT OF 24 FEET. 

* TIMING: THE MAXIMUM WINDS ARE EXPECTED AROUND 8 PM EDT 
  THURSDAY WITH THE LARGEST WAVES EXPECTED AROUND 6 AM EDT 
  FRIDAY. 

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.

A STORM WARNING MEANS WINDS OF 48 TO 63 KNOTS ARE IMMINENT OR
OCCURING. RECREATIONAL BOATERS SHOULD REMAIN IN PORT...OR TAKE
SHELTER UNTIL WINDS AND WAVES SUBSIDE. COMMERCIAL VESSELS SHOULD
PREPARE FOR VERY STRONG WINDS AND DANGEROUS SEA CONDITIONS...AND
CONSIDER REMAINING IN PORT OR TAKING SHELTER IN PORT UNTIL WINDS
AND WAVES SUBSIDE.

&&

$$

LHZ421-062015-
/O.CON.KDTX.GL.W.0018.000000T0000Z-170407T0000Z/
/O.CON.KDTX.SR.W.0003.170407T0000Z-170407T1400Z/
OUTER SAGINAW BAY SW OF ALABASTER TO PORT AUSTIN MI TO INNER
SAGINAW BAY-
411 AM EDT THU APR 6 2017

...GALE WARNING REMAINS IN EFFECT UNTIL 8 PM EDT THIS EVENING...
...STORM WARNING REMAINS IN EFFECT FROM 8 PM THIS EVENING TO
10 AM EDT FRIDAY...

* WIND AND WAVES: DURING THE GALE WARNING...EXPECT SUSTAINED 
  WINDS UP TO 37 KNOTS FROM THE NORTH WITH GUSTS UP TO 46 
  KNOTS. THE LARGEST EXPECTED SIGNIFICANT WAVES WILL BE 16 FEET 
  WITH A POTENTIAL MAXIMUM WAVE HEIGHT OF 23 FEET. 

* TIMING: THE MAXIMUM WINDS ARE EXPECTED AROUND 10 AM EDT 
  THURSDAY WITH THE LARGEST WAVES EXPECTED AROUND 12 PM EDT 
  THURSDAY. 

* WIND AND WAVES: DURING THE STORM WARNING...EXPECT SUSTAINED 
  WINDS UP TO 37 KNOTS FROM THE NORTH WITH GUSTS UP TO 48 KNOTS. 
  THE LARGEST EXPECTED SIGNIFICANT WAVES WILL BE 15 FEET WITH A 
  POTENTIAL MAXIMUM WAVE HEIGHT OF 22 FEET. 

* TIMING: THE MAXIMUM WINDS ARE EXPECTED AROUND 8 PM EDT 
  THURSDAY WITH THE LARGEST WAVES EXPECTED AROUND 9 PM EDT 
  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.

A STORM WARNING MEANS WINDS OF 48 TO 63 KNOTS ARE IMMINENT OR
OCCURING. RECREATIONAL BOATERS SHOULD REMAIN IN PORT...OR TAKE
SHELTER UNTIL WINDS AND WAVES SUBSIDE. COMMERCIAL VESSELS SHOULD
PREPARE FOR VERY STRONG WINDS AND DANGEROUS SEA CONDITIONS...AND
CONSIDER REMAINING IN PORT OR TAKING SHELTER IN PORT UNTIL WINDS
AND WAVES SUBSIDE.

&&

$$

LCZ460-LEZ444-062015-
/O.CON.KDTX.GL.W.0019.170406T2000Z-170407T1400Z/
LAKE ST. CLAIR-
MICHIGAN WATERS OF LAKE ERIE FROM DETROIT RIVER TO NORTH CAPE MI-
411 AM EDT THU APR 6 2017

...GALE WARNING REMAINS IN EFFECT FROM 4 PM THIS AFTERNOON TO
10 AM EDT FRIDAY...

* WIND AND WAVES: DURING THE GALE WARNING...EXPECT SUSTAINED 
  WINDS UP TO 33 KNOTS FROM THE NORTH WITH GUSTS UP TO 44 
  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 8 PM EDT 
  THURSDAY WITH THE LARGEST WAVES EXPECTED AROUND 8 PM EDT 
  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.

&&

$$

LHZ422-062015-
/O.CON.KDTX.GL.W.0018.000000T0000Z-170407T1400Z/
INNER SAGINAW BAY SW OF POINT AU GRES TO BAY PORT MI-
411 AM EDT THU APR 6 2017

...GALE WARNING REMAINS IN EFFECT UNTIL 10 AM EDT FRIDAY...

* WIND AND WAVES: DURING THE GALE WARNING...EXPECT SUSTAINED 
  WINDS UP TO 39 KNOTS FROM THE NORTHEAST WITH GUSTS UP TO 47 
  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 8 AM EDT 
  THURSDAY WITH THE LARGEST WAVES EXPECTED AROUND 9 AM EDT 
  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.

&&

$$

LHZ361-062015-
/O.CON.KDTX.GL.W.0018.000000T0000Z-170407T1400Z/
LAKE HURON FROM 5NM EAST OF MACKINAC BRIDGE TO PRESQUE ISLE LT
BEYOND 5 NM OFF SHORE-
411 AM EDT THU APR 6 2017

...GALE WARNING REMAINS IN EFFECT UNTIL 10 AM EDT FRIDAY...

* WIND AND WAVES: DURING THE GALE WARNING...EXPECT SUSTAINED 
  WINDS UP TO 31 KNOTS FROM THE NORTH WITH GUSTS UP TO 42 
  KNOTS. THE LARGEST EXPECTED SIGNIFICANT WAVES WILL BE 8 FEET 
  WITH A POTENTIAL MAXIMUM WAVE HEIGHT OF 11 FEET. 

* TIMING: THE MAXIMUM WINDS ARE EXPECTED AROUND 8 PM EDT 
  THURSDAY WITH THE LARGEST WAVES EXPECTED AROUND 8 PM EDT 
  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.

&&

$$

LHZ443-464-062015-
/O.CON.KDTX.SR.W.0003.170407T0000Z-170407T1400Z/
PORT SANILAC TO PORT HURON MI-
LAKE HURON FROM PORT SANILAC TO PORT HURON BEYOND 5NM OFF SHORE-
411 AM EDT THU APR 6 2017

...STORM WARNING REMAINS IN EFFECT FROM 8 PM THIS EVENING TO
10 AM EDT FRIDAY...

* WIND AND WAVES: DURING THE STORM WARNING...EXPECT SUSTAINED 
  WINDS UP TO 35 KNOTS FROM THE NORTH WITH GUSTS UP TO 49 
  KNOTS. THE LARGEST EXPECTED SIGNIFICANT WAVES WILL BE 16 FEET 
  WITH A POTENTIAL MAXIMUM WAVE HEIGHT OF 23 FEET. 

* TIMING: THE MAXIMUM WINDS ARE EXPECTED AROUND 8 PM EDT 
  THURSDAY WITH THE LARGEST WAVES EXPECTED AROUND 12 AM EDT 
  FRIDAY. 

REFER TO THE LATEST MARINE FORECASTS FOR GREATER DETAIL.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A STORM WARNING MEANS WINDS OF 48 TO 63 KNOTS ARE IMMINENT OR
OCCURING. RECREATIONAL BOATERS SHOULD REMAIN IN PORT...OR TAKE
SHELTER UNTIL WINDS AND WAVES SUBSIDE. COMMERCIAL VESSELS SHOULD
PREPARE FOR VERY STRONG WINDS AND DANGEROUS SEA CONDITIONS...AND
CONSIDER REMAINING IN PORT OR TAKING SHELTER IN PORT UNTIL WINDS
AND WAVES SUBSIDE.

&&

$$

DRC

930 
WHUS73 KDTX 061223
MWWDTX

URGENT - MARINE WEATHER MESSAGE
NATIONAL WEATHER SERVICE DETROIT/PONTIAC MI
823 AM EDT THU APR 6 2017

...GALES AND STORMS TODAY AND TONIGHT...

.A POWERFUL EARLY SPRING LOW PRESSURE SYSTEM REMAINS SET TO IMPACT 
THE GREAT LAKES TODAY THROUGH FRIDAY. THE PRIMARY FORECAST 
ADJUSTMENT IS TO ISSUE THE STORM WARNING FOR CENTRAL AND SOUTHERN 
LAKE HURON TONIGHT AS COLDER AIR MOVES IN THROUGH THE LOW LEVELS AND 
BUILDS ENOUGH INSTABILITY OVER THE WATER FOR FREQUENT 50 KNOT GUSTS.
GALE WARNINGS REMAIN IN EFFECT FOR ALL OTHER MARINE ZONES INCLUDING 
LAKE ST CLAIR AND THE MICHIGAN WATERS OF LAKE HURON. THE STRONGEST 
WINDS, OF UP TO 50 KNOTS, ARE FORECASTED TO OCCUR BETWEEN 00Z 
TONIGHT THROUGH APPROXIMATELY 14Z FRIDAY MORNING AS DIRECTION BACKS 
TOWARD THE NORTH AND PULLS COLDER AIR SOUTHWARD. LATEST INDICATIONS 
ARE THAT SIGNIFICANT WAVE HEIGHTS WILL BUILD BETWEEN 14 AND 17 FEET 
OVER MUCH OF THE SOUTHERN LAKE HURON BASIN WITH MAX WAVES 20 TO 25 
FEET POSSIBLE.

LHZ421-070030-
/O.CAN.KDTX.GL.W.0018.000000T0000Z-170407T0000Z/
/O.EXT.KDTX.SR.W.0003.170406T1223Z-170407T1400Z/
OUTER SAGINAW BAY SW OF ALABASTER TO PORT AUSTIN MI TO INNER
SAGINAW BAY-
823 AM EDT THU APR 6 2017

...STORM WARNING NOW IN EFFECT UNTIL 10 AM EDT FRIDAY...
...GALE WARNING IS CANCELLED...

THE NATIONAL WEATHER SERVICE IN DETROIT/PONTIAC HAS CANCELLED THE
GALE WARNING. THE STORM WARNING IS NOW IN EFFECT UNTIL 10 AM EDT
FRIDAY. 

* WIND AND WAVES: DURING THE STORM WARNING...EXPECT SUSTAINED 
  WINDS UP TO 37 KNOTS FROM THE NORTHEAST WITH GUSTS UP TO 48 
  KNOTS. THE LARGEST EXPECTED SIGNIFICANT WAVES WILL BE 16 FEET 
  WITH A POTENTIAL MAXIMUM WAVE HEIGHT OF 23 FEET. 

* TIMING: THE MAXIMUM WINDS ARE EXPECTED AROUND 10 AM EDT 
  THURSDAY WITH THE LARGEST WAVES EXPECTED AROUND 12 PM EDT 
  THURSDAY. 

REFER TO THE LATEST MARINE FORECASTS FOR GREATER DETAIL.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A STORM WARNING MEANS WINDS OF 48 TO 63 KNOTS ARE IMMINENT OR
OCCURING. RECREATIONAL BOATERS SHOULD REMAIN IN PORT...OR TAKE
SHELTER UNTIL WINDS AND WAVES SUBSIDE. COMMERCIAL VESSELS SHOULD
PREPARE FOR VERY STRONG WINDS AND DANGEROUS SEA CONDITIONS...AND
CONSIDER REMAINING IN PORT OR TAKING SHELTER IN PORT UNTIL WINDS
AND WAVES SUBSIDE.

&&

$$

LHZ422-070030-
/O.UPG.KDTX.GL.W.0018.000000T0000Z-170407T1400Z/
/O.EXB.KDTX.SR.W.0003.170406T1223Z-170407T0400Z/
INNER SAGINAW BAY SW OF POINT AU GRES TO BAY PORT MI-
823 AM EDT THU APR 6 2017

...STORM WARNING IN EFFECT UNTIL MIDNIGHT EDT TONIGHT...

THE NATIONAL WEATHER SERVICE IN DETROIT/PONTIAC HAS ISSUED A
STORM WARNING...WHICH IS IN EFFECT UNTIL MIDNIGHT EDT TONIGHT. 

* WIND AND WAVES: DURING THE STORM WARNING...EXPECT SUSTAINED 
  WINDS UP TO 39 KNOTS FROM THE NORTHEAST WITH GUSTS UP TO 48 
  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 8 AM EDT 
  THURSDAY WITH THE LARGEST WAVES EXPECTED AROUND 9 AM EDT 
  THURSDAY. 

REFER TO THE LATEST MARINE FORECASTS FOR GREATER DETAIL.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A STORM WARNING MEANS WINDS OF 48 TO 63 KNOTS ARE IMMINENT OR
OCCURING. RECREATIONAL BOATERS SHOULD REMAIN IN PORT...OR TAKE
SHELTER UNTIL WINDS AND WAVES SUBSIDE. COMMERCIAL VESSELS SHOULD
PREPARE FOR VERY STRONG WINDS AND DANGEROUS SEA CONDITIONS...AND
CONSIDER REMAINING IN PORT OR TAKING SHELTER IN PORT UNTIL WINDS
AND WAVES SUBSIDE.

&&

$$

LHZ362-363-441-442-462-463-070030-
/O.CON.KDTX.GL.W.0018.000000T0000Z-170407T0000Z/
/O.CON.KDTX.SR.W.0003.170407T0000Z-170407T1400Z/
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-PORT AUSTIN TO HARBOR BEACH MI-
HARBOR BEACH TO PORT SANILAC 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-
823 AM EDT THU APR 6 2017

...GALE WARNING REMAINS IN EFFECT UNTIL 8 PM EDT THIS EVENING...
...STORM WARNING REMAINS IN EFFECT FROM 8 PM THIS EVENING TO
10 AM EDT FRIDAY...

* WIND AND WAVES: DURING THE GALE WARNING...EXPECT SUSTAINED 
  WINDS UP TO 37 KNOTS FROM THE NORTHEAST WITH GUSTS UP TO 47 
  KNOTS. THE LARGEST EXPECTED SIGNIFICANT WAVES WILL BE 17 FEET 
  WITH A POTENTIAL MAXIMUM WAVE HEIGHT OF 24 FEET. 

* TIMING: THE MAXIMUM WINDS ARE EXPECTED AROUND 11 AM EDT 
  THURSDAY WITH THE LARGEST WAVES EXPECTED AROUND 12 PM EDT 
  THURSDAY. 

* WIND AND WAVES: DURING THE STORM WARNING...EXPECT SUSTAINED 
  WINDS UP TO 37 KNOTS FROM THE NORTH WITH GUSTS UP TO 49 KNOTS. 
  THE LARGEST EXPECTED SIGNIFICANT WAVES WILL BE 17 FEET WITH A 
  POTENTIAL MAXIMUM WAVE HEIGHT OF 24 FEET. 

* TIMING: THE MAXIMUM WINDS ARE EXPECTED AROUND 8 PM EDT 
  THURSDAY WITH THE LARGEST WAVES EXPECTED AROUND 6 AM EDT 
  FRIDAY. 

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.

A STORM WARNING MEANS WINDS OF 48 TO 63 KNOTS ARE IMMINENT OR
OCCURING. RECREATIONAL BOATERS SHOULD REMAIN IN PORT...OR TAKE
SHELTER UNTIL WINDS AND WAVES SUBSIDE. COMMERCIAL VESSELS SHOULD
PREPARE FOR VERY STRONG WINDS AND DANGEROUS SEA CONDITIONS...AND
CONSIDER REMAINING IN PORT OR TAKING SHELTER IN PORT UNTIL WINDS
AND WAVES SUBSIDE.

&&

$$

LCZ460-LEZ444-070030-
/O.CON.KDTX.GL.W.0019.170406T2000Z-170407T1400Z/
LAKE ST. CLAIR-
MICHIGAN WATERS OF LAKE ERIE FROM DETROIT RIVER TO NORTH CAPE MI-
823 AM EDT THU APR 6 2017

...GALE WARNING REMAINS IN EFFECT FROM 4 PM THIS AFTERNOON TO
10 AM EDT FRIDAY...

* WIND AND WAVES: DURING THE GALE WARNING...EXPECT SUSTAINED 
  WINDS UP TO 33 KNOTS FROM THE NORTH WITH GUSTS UP TO 44 
  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 8 PM EDT 
  THURSDAY WITH THE LARGEST WAVES EXPECTED AROUND 8 PM EDT 
  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.

&&

$$

LHZ361-070030-
/O.CON.KDTX.GL.W.0018.000000T0000Z-170407T1400Z/
LAKE HURON FROM 5NM EAST OF MACKINAC BRIDGE TO PRESQUE ISLE LT
BEYOND 5 NM OFF SHORE-
823 AM EDT THU APR 6 2017

...GALE WARNING REMAINS IN EFFECT UNTIL 10 AM EDT FRIDAY...

* WIND AND WAVES: DURING THE GALE WARNING...EXPECT SUSTAINED 
  WINDS UP TO 31 KNOTS FROM THE NORTH WITH GUSTS UP TO 42 
  KNOTS. THE LARGEST EXPECTED SIGNIFICANT WAVES WILL BE 8 FEET 
  WITH A POTENTIAL MAXIMUM WAVE HEIGHT OF 11 FEET. 

* TIMING: THE MAXIMUM WINDS ARE EXPECTED AROUND 8 PM EDT 
  THURSDAY WITH THE LARGEST WAVES EXPECTED AROUND 8 PM EDT 
  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.

&&

$$

LHZ443-464-070030-
/O.CON.KDTX.SR.W.0003.170407T0000Z-170407T1400Z/
PORT SANILAC TO PORT HURON MI-
LAKE HURON FROM PORT SANILAC TO PORT HURON BEYOND 5NM OFF SHORE-
823 AM EDT THU APR 6 2017

...STORM WARNING REMAINS IN EFFECT FROM 8 PM THIS EVENING TO
10 AM EDT FRIDAY...

* WIND AND WAVES: DURING THE STORM WARNING...EXPECT SUSTAINED 
  WINDS UP TO 35 KNOTS FROM THE NORTH WITH GUSTS UP TO 49 
  KNOTS. THE LARGEST EXPECTED SIGNIFICANT WAVES WILL BE 16 FEET 
  WITH A POTENTIAL MAXIMUM WAVE HEIGHT OF 23 FEET. 

* TIMING: THE MAXIMUM WINDS ARE EXPECTED AROUND 8 PM EDT 
  THURSDAY WITH THE LARGEST WAVES EXPECTED AROUND 12 AM EDT 
  FRIDAY. 

REFER TO THE LATEST MARINE FORECASTS FOR GREATER DETAIL.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A STORM WARNING MEANS WINDS OF 48 TO 63 KNOTS ARE IMMINENT OR
OCCURING. RECREATIONAL BOATERS SHOULD REMAIN IN PORT...OR TAKE
SHELTER UNTIL WINDS AND WAVES SUBSIDE. COMMERCIAL VESSELS SHOULD
PREPARE FOR VERY STRONG WINDS AND DANGEROUS SEA CONDITIONS...AND
CONSIDER REMAINING IN PORT OR TAKING SHELTER IN PORT UNTIL WINDS
AND WAVES SUBSIDE.

&&

$$

SC

896 
WHUS73 KDTX 061944
MWWDTX

URGENT - MARINE WEATHER MESSAGE
NATIONAL WEATHER SERVICE DETROIT/PONTIAC MI
344 PM EDT THU APR 6 2017

...STORM AND GALE FORCE WINDS TONIGHT...

.AVAILABLE OBSERVATIONS SUGGEST ONGOING HIGH END GALES ACROSS 
SOUTHERN LAKE HURON. THERE WERE SEVERAL HOURS OF STORM FORCE 
NORTHEAST WINDS DOWN SAGINAW BAY EARLIER. THESE HAVE SINCE 
DIMINISHED AS THE WIND HAVE BACK MORE TOWARD THE NORTH OVER THE BAY. 
THERE WILL BE A TIGHTENING OF THE SFC GRADIENT THIS EVENING WHICH 
WILL SUPPORT AN UPTICK IN THE WINDS. THIS IS EXPECTED TO RESULT IN A 
FEW STORM FORCE WIND GUSTS OVER CENTRAL AND SOUTHERN LAKE HURON. 
DEEPENING OF THE SFC LOW OVER UPSTATE NEW YORK TONIGHT WILL SUSTAIN 
A HEALTHY GRADIENT, REMAINING HIGHLY SUPPORTIVE OF GALE FORCE WIND 
GUSTS INTO FRI MORNING. THE BEST CHANCE FOR STORM FORCE GUSTS WILL 
BE THIS EVENING. SO THERE IS A POSSIBILITY THAT THE STORM WARNINGS 
WILL BE ABLE TO BE DOWNGRADED EITHER LATE THIS EVENING OR EARLY FRI 
MORNING. WINDS WILL THEN STEADILY DECREASE DURING THE DAY FRIDAY AS 
THE GRADIENT RELAXES AND OVER LAKE STABILITY INCREASES.

LHZ422-070745-
/O.CAN.KDTX.SR.W.0003.000000T0000Z-170407T0400Z/
/O.EXA.KDTX.GL.W.0018.000000T0000Z-170407T1400Z/
INNER SAGINAW BAY SW OF POINT AU GRES TO BAY PORT MI-
344 PM EDT THU APR 6 2017

...GALE WARNING IN EFFECT UNTIL 10 AM EDT FRIDAY...
...STORM WARNING IS CANCELLED...

THE NATIONAL WEATHER SERVICE IN DETROIT/PONTIAC HAS ISSUED A GALE
WARNING...WHICH IS IN EFFECT UNTIL 10 AM EDT FRIDAY. 

* WIND AND WAVES: DURING THE GALE WARNING...EXPECT SUSTAINED 
  WINDS UP TO 36 KNOTS FROM THE NORTHEAST WITH GUSTS UP TO 49 
  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 3 PM EDT 
  THURSDAY WITH THE LARGEST WAVES EXPECTED AROUND 3 PM EDT 
  THURSDAY. 

THE STORM WARNING HAS BEEN CANCELLED. 

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.

&&

$$

LHZ362-363-441-442-462-463-070745-
/O.CAN.KDTX.GL.W.0018.000000T0000Z-170407T0000Z/
/O.EXT.KDTX.SR.W.0003.170406T2200Z-170407T1400Z/
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-PORT AUSTIN TO HARBOR BEACH MI-
HARBOR BEACH TO PORT SANILAC 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-
344 PM EDT THU APR 6 2017

...STORM WARNING NOW IN EFFECT UNTIL 10 AM EDT FRIDAY...
...GALE WARNING IS CANCELLED...

THE NATIONAL WEATHER SERVICE IN DETROIT/PONTIAC HAS CANCELLED THE
GALE WARNING. THE STORM WARNING IS NOW IN EFFECT UNTIL 10 AM EDT
FRIDAY. 

* WIND AND WAVES: DURING THE STORM WARNING...EXPECT SUSTAINED 
  WINDS UP TO 39 KNOTS FROM THE NORTH WITH GUSTS UP TO 50 
  KNOTS. THE LARGEST EXPECTED SIGNIFICANT WAVES WILL BE 17 FEET 
  WITH A POTENTIAL MAXIMUM WAVE HEIGHT OF 24 FEET. 

* TIMING: THE MAXIMUM WINDS ARE EXPECTED AROUND 7 PM EDT 
  THURSDAY WITH THE LARGEST WAVES EXPECTED AROUND 7 AM EDT 
  FRIDAY. 

REFER TO THE LATEST MARINE FORECASTS FOR GREATER DETAIL.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A STORM WARNING MEANS WINDS OF 48 TO 63 KNOTS ARE IMMINENT OR
OCCURING. RECREATIONAL BOATERS SHOULD REMAIN IN PORT...OR TAKE
SHELTER UNTIL WINDS AND WAVES SUBSIDE. COMMERCIAL VESSELS SHOULD
PREPARE FOR VERY STRONG WINDS AND DANGEROUS SEA CONDITIONS...AND
CONSIDER REMAINING IN PORT OR TAKING SHELTER IN PORT UNTIL WINDS
AND WAVES SUBSIDE.

&&

$$

LCZ460-LEZ444-070745-
/O.EXT.KDTX.GL.W.0019.170406T2000Z-170407T1700Z/
LAKE ST. CLAIR-
MICHIGAN WATERS OF LAKE ERIE FROM DETROIT RIVER TO NORTH CAPE MI-
344 PM EDT THU APR 6 2017

...GALE WARNING NOW IN EFFECT UNTIL 1 PM EDT FRIDAY...

THE GALE WARNING IS NOW IN EFFECT UNTIL 1 PM EDT FRIDAY. 

* WIND AND WAVES: DURING THE GALE WARNING...EXPECT SUSTAINED 
  WINDS UP TO 32 KNOTS FROM THE NORTH WITH GUSTS UP TO 48 
  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 6 PM EDT 
  THURSDAY WITH THE LARGEST WAVES EXPECTED AROUND 8 PM EDT 
  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.

&&

$$

LHZ421-070745-
/O.EXT.KDTX.SR.W.0003.000000T0000Z-170407T1100Z/
OUTER SAGINAW BAY SW OF ALABASTER TO PORT AUSTIN MI TO INNER
SAGINAW BAY-
344 PM EDT THU APR 6 2017

...STORM WARNING NOW IN EFFECT UNTIL 7 AM EDT FRIDAY...

THE STORM WARNING IS NOW IN EFFECT UNTIL 7 AM EDT FRIDAY. 

* WIND AND WAVES: DURING THE STORM WARNING...EXPECT SUSTAINED 
  WINDS UP TO 37 KNOTS FROM THE NORTHEAST WITH GUSTS UP TO 48 
  KNOTS. THE LARGEST EXPECTED SIGNIFICANT WAVES WILL BE 15 FEET 
  WITH A POTENTIAL MAXIMUM WAVE HEIGHT OF 22 FEET. 

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

REFER TO THE LATEST MARINE FORECASTS FOR GREATER DETAIL.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A STORM WARNING MEANS WINDS OF 48 TO 63 KNOTS ARE IMMINENT OR
OCCURING. RECREATIONAL BOATERS SHOULD REMAIN IN PORT...OR TAKE
SHELTER UNTIL WINDS AND WAVES SUBSIDE. COMMERCIAL VESSELS SHOULD
PREPARE FOR VERY STRONG WINDS AND DANGEROUS SEA CONDITIONS...AND
CONSIDER REMAINING IN PORT OR TAKING SHELTER IN PORT UNTIL WINDS
AND WAVES SUBSIDE.

&&

$$

LHZ443-464-070745-
/O.EXT.KDTX.SR.W.0003.170406T2200Z-170407T1400Z/
PORT SANILAC TO PORT HURON MI-
LAKE HURON FROM PORT SANILAC TO PORT HURON BEYOND 5NM OFF SHORE-
344 PM EDT THU APR 6 2017

...STORM WARNING NOW IN EFFECT UNTIL 10 AM EDT FRIDAY...

THE STORM WARNING IS NOW IN EFFECT UNTIL 10 AM EDT FRIDAY. 

* WIND AND WAVES: DURING THE STORM WARNING...EXPECT SUSTAINED 
  WINDS UP TO 38 KNOTS FROM THE NORTH WITH GUSTS UP TO 50 
  KNOTS. THE LARGEST EXPECTED SIGNIFICANT WAVES WILL BE 16 FEET 
  WITH A POTENTIAL MAXIMUM WAVE HEIGHT OF 23 FEET. 

* TIMING: THE MAXIMUM WINDS ARE EXPECTED AROUND 7 PM EDT 
  THURSDAY WITH THE LARGEST WAVES EXPECTED AROUND 8 PM EDT 
  THURSDAY. 

REFER TO THE LATEST MARINE FORECASTS FOR GREATER DETAIL.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A STORM WARNING MEANS WINDS OF 48 TO 63 KNOTS ARE IMMINENT OR
OCCURING. RECREATIONAL BOATERS SHOULD REMAIN IN PORT...OR TAKE
SHELTER UNTIL WINDS AND WAVES SUBSIDE. COMMERCIAL VESSELS SHOULD
PREPARE FOR VERY STRONG WINDS AND DANGEROUS SEA CONDITIONS...AND
CONSIDER REMAINING IN PORT OR TAKING SHELTER IN PORT UNTIL WINDS
AND WAVES SUBSIDE.

&&

$$

LHZ361-070745-
/O.CON.KDTX.GL.W.0018.000000T0000Z-170407T1400Z/
LAKE HURON FROM 5NM EAST OF MACKINAC BRIDGE TO PRESQUE ISLE LT
BEYOND 5 NM OFF SHORE-
344 PM EDT THU APR 6 2017

...GALE WARNING REMAINS IN EFFECT UNTIL 10 AM EDT FRIDAY...

* WIND AND WAVES: DURING THE GALE WARNING...EXPECT SUSTAINED 
  WINDS UP TO 30 KNOTS FROM THE NORTH WITH GUSTS UP TO 42 
  KNOTS. THE LARGEST EXPECTED SIGNIFICANT WAVES WILL BE 8 FEET 
  WITH A POTENTIAL MAXIMUM WAVE HEIGHT OF 11 FEET. 

* TIMING: THE MAXIMUM WINDS ARE EXPECTED AROUND 8 PM EDT 
  THURSDAY WITH THE LARGEST WAVES EXPECTED AROUND 9 PM EDT 
  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.

&&

$$

SC

552 
WHUS73 KDTX 070357
MWWDTX

URGENT - MARINE WEATHER MESSAGE
NATIONAL WEATHER SERVICE DETROIT/PONTIAC MI
1157 PM EDT THU APR 6 2017

...STORM AND GALE FORCE WINDS OVERNIGHT...

.AVAILABLE OBSERVATIONS SUGGEST ONGOING HIGH END GALES ACROSS 
SOUTHERN LAKE HURON. THERE WERE SEVERAL HOURS OF STORM FORCE 
NORTHEAST WINDS DOWN SAGINAW BAY EARLIER. THESE HAVE SINCE 
DIMINISHED AS THE WIND HAVE BACK MORE TOWARD THE NORTH OVER THE BAY. 
THERE WILL BE A TIGHTENING OF THE SFC GRADIENT THIS EVENING WHICH 
WILL SUPPORT AN UPTICK IN THE WINDS. THIS IS EXPECTED TO RESULT IN A 
FEW STORM FORCE WIND GUSTS OVER CENTRAL AND SOUTHERN LAKE HURON. 
DEEPENING OF THE SFC LOW OVER UPSTATE NEW YORK TONIGHT WILL SUSTAIN 
A HEALTHY GRADIENT, REMAINING HIGHLY SUPPORTIVE OF GALE FORCE WIND 
GUSTS INTO FRI MORNING. THE BEST CHANCE FOR STORM FORCE GUSTS WILL 
BE THIS EVENING. SO THERE IS A POSSIBILITY THAT THE STORM WARNINGS 
WILL BE ABLE TO BE DOWNGRADED EITHER LATE THIS EVENING OR EARLY FRI 
MORNING. WINDS WILL THEN STEADILY DECREASE DURING THE DAY FRIDAY AS 
THE GRADIENT RELAXES AND OVER LAKE STABILITY INCREASES.

LHZ421-071400-
/O.CAN.KDTX.SR.W.0003.000000T0000Z-170407T1100Z/
/O.EXA.KDTX.GL.W.0018.000000T0000Z-170407T1400Z/
OUTER SAGINAW BAY SW OF ALABASTER TO PORT AUSTIN MI TO INNER
SAGINAW BAY-
1157 PM EDT THU APR 6 2017

...GALE WARNING IN EFFECT UNTIL 10 AM EDT FRIDAY...
...STORM WARNING IS CANCELLED...

THE NATIONAL WEATHER SERVICE IN DETROIT/PONTIAC HAS ISSUED A GALE
WARNING...WHICH IS IN EFFECT UNTIL 10 AM EDT FRIDAY. 

* WIND AND WAVES: DURING THE GALE WARNING...EXPECT SUSTAINED 
  WINDS UP TO 35 KNOTS FROM THE NORTH WITH GUSTS UP TO 48 
  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 2 AM EDT FRIDAY 
  WITH THE LARGEST WAVES EXPECTED AROUND 4 AM EDT FRIDAY. 

THE STORM WARNING HAS BEEN CANCELLED. 

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.

&&

$$

LHZ422-071400-
/O.CON.KDTX.GL.W.0018.000000T0000Z-170407T1400Z/
INNER SAGINAW BAY SW OF POINT AU GRES TO BAY PORT MI-
1157 PM EDT THU APR 6 2017

...GALE WARNING REMAINS IN EFFECT UNTIL 10 AM EDT FRIDAY...

* WIND AND WAVES: DURING THE GALE WARNING...EXPECT SUSTAINED 
  WINDS UP TO 28 KNOTS FROM THE NORTH WITH GUSTS UP TO 43 
  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 11 PM EDT 
  THURSDAY WITH THE LARGEST WAVES EXPECTED AROUND 11 PM EDT 
  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-LEZ444-071600-
/O.CON.KDTX.GL.W.0019.000000T0000Z-170407T1700Z/
LAKE ST. CLAIR-
MICHIGAN WATERS OF LAKE ERIE FROM DETROIT RIVER TO NORTH CAPE MI-
1157 PM EDT THU APR 6 2017

...GALE WARNING REMAINS IN EFFECT UNTIL 1 PM EDT FRIDAY...

* WIND AND WAVES: DURING THE GALE WARNING...EXPECT SUSTAINED 
  WINDS UP TO 29 KNOTS FROM THE NORTH WITH GUSTS UP TO 45 
  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 11 PM EDT 
  THURSDAY WITH THE LARGEST WAVES EXPECTED AROUND 11 PM EDT 
  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.

&&

$$

LHZ361-071400-
/O.CON.KDTX.GL.W.0018.000000T0000Z-170407T1400Z/
LAKE HURON FROM 5NM EAST OF MACKINAC BRIDGE TO PRESQUE ISLE LT
BEYOND 5 NM OFF SHORE-
1157 PM EDT THU APR 6 2017

...GALE WARNING REMAINS IN EFFECT UNTIL 10 AM EDT FRIDAY...

* WIND AND WAVES: DURING THE GALE WARNING...EXPECT SUSTAINED 
  WINDS UP TO 28 KNOTS FROM THE NORTH WITH GUSTS UP TO 42 
  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 12 AM EDT FRIDAY 
  WITH THE LARGEST WAVES EXPECTED AROUND 11 PM EDT 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.

&&

$$

LHZ362-363-441>443-462>464-071400-
/O.CON.KDTX.SR.W.0003.000000T0000Z-170407T1400Z/
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-PORT AUSTIN TO HARBOR BEACH MI-
HARBOR BEACH TO PORT SANILAC MI-PORT SANILAC TO PORT HURON 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-
1157 PM EDT THU APR 6 2017

...STORM WARNING REMAINS IN EFFECT UNTIL 10 AM EDT FRIDAY...

* WIND AND WAVES: DURING THE STORM WARNING...EXPECT SUSTAINED 
  WINDS UP TO 37 KNOTS FROM THE NORTH WITH GUSTS UP TO 50 
  KNOTS. THE LARGEST EXPECTED SIGNIFICANT WAVES WILL BE 17 FEET 
  WITH A POTENTIAL MAXIMUM WAVE HEIGHT OF 24 FEET. 

* TIMING: THE MAXIMUM WINDS ARE EXPECTED AROUND 3 AM EDT FRIDAY 
  WITH THE LARGEST WAVES EXPECTED AROUND 7 AM EDT FRIDAY. 

REFER TO THE LATEST MARINE FORECASTS FOR GREATER DETAIL.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A STORM WARNING MEANS WINDS OF 48 TO 63 KNOTS ARE IMMINENT OR
OCCURING. RECREATIONAL BOATERS SHOULD REMAIN IN PORT...OR TAKE
SHELTER UNTIL WINDS AND WAVES SUBSIDE. COMMERCIAL VESSELS SHOULD
PREPARE FOR VERY STRONG WINDS AND DANGEROUS SEA CONDITIONS...AND
CONSIDER REMAINING IN PORT OR TAKING SHELTER IN PORT UNTIL WINDS
AND WAVES SUBSIDE.

&&

$$

787 
WHUS73 KDTX 070747
MWWDTX

URGENT - MARINE WEATHER MESSAGE
NATIONAL WEATHER SERVICE DETROIT/PONTIAC MI
347 AM EDT FRI APR 7 2017

...NORTHERLY GALES TO CONTINUE THROUGH THIS AFTERNOON...

.NORTHWEST WINDS IN THE 30 TO 40 KNOT RANGE EARLY THIS MORNING WILL 
CONTINUE TO DIMINISH DURING THE DAY, DROPPING INTO THE 15 TO 25 KNOT 
RANGE THIS EVENING. WITH THE DOWNWARD TREND IN WINDS, STORM WARNINGS 
HAVE BEEN CONVERTED TO GALE WARNINGS, AND THE GALE WARNINGS ALONG 
THE NEARSHORE WATERS HAVE BEEN CONVERTED TO SMALL CRAFT ADVISORIES. 
A RIDGE OF HIGH PRESSURE ARRIVING SATURDAY MORNING WILL LEAD TO 
LIGHT WINDS THROUGH THE DAY ON SATURDAY, WITH INCREASING SOUTHERLY 
WINDS FOR THE SECOND HALF OF THE WEEKEND INTO MONDAY, BUT LIKELY 
REMAINING UNDER 30 KNOTS.

LHZ362-363-441>443-462>464-072000-
/O.CAN.KDTX.SR.W.0003.000000T0000Z-170407T1400Z/
/O.EXB.KDTX.GL.W.0018.000000T0000Z-170407T2000Z/
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-PORT AUSTIN TO HARBOR BEACH MI-
HARBOR BEACH TO PORT SANILAC MI-PORT SANILAC TO PORT HURON 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-
347 AM EDT FRI APR 7 2017

...GALE WARNING IN EFFECT UNTIL 4 PM EDT THIS AFTERNOON...
...STORM WARNING IS CANCELLED...

THE NATIONAL WEATHER SERVICE IN DETROIT/PONTIAC HAS ISSUED A GALE
WARNING WHICH IS IN EFFECT UNTIL 4 PM EDT THIS AFTERNOON. 

* WIND AND WAVES: DURING THE GALE WARNING...EXPECT SUSTAINED 
  WINDS UP TO 37 KNOTS FROM THE NORTH WITH GUSTS UP TO 44 
  KNOTS. THE LARGEST EXPECTED SIGNIFICANT WAVES WILL BE 17 FEET 
  WITH A POTENTIAL MAXIMUM WAVE HEIGHT OF 24 FEET. 

* TIMING: THE MAXIMUM WINDS ARE EXPECTED AROUND 5 AM EDT FRIDAY 
  WITH THE LARGEST WAVES EXPECTED AROUND 7 AM EDT FRIDAY. 

THE STORM WARNING HAS BEEN CANCELLED. 

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-LEZ444-072000-
/O.CAN.KDTX.GL.W.0019.000000T0000Z-170407T1700Z/
/O.NEW.KDTX.SC.Y.0027.170407T0747Z-170407T2000Z/
LAKE ST. CLAIR-
MICHIGAN WATERS OF LAKE ERIE FROM DETROIT RIVER TO NORTH CAPE MI-
347 AM EDT FRI APR 7 2017

...SMALL CRAFT ADVISORY IN EFFECT UNTIL 4 PM EDT THIS AFTERNOON...
...GALE WARNING IS CANCELLED...

THE NATIONAL WEATHER SERVICE IN DETROIT/PONTIAC HAS ISSUED A
SMALL CRAFT ADVISORY WHICH IS IN EFFECT UNTIL 4 PM EDT THIS
AFTERNOON. 

* WIND AND WAVES: DURING THE SMALL CRAFT ADVISORY...EXPECT
  SUSTAINED WINDS UP TO 27 KNOTS FROM THE NORTHWEST WITH GUSTS UP
  TO 33 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 5 AM EDT FRIDAY 
  WITH THE LARGEST WAVES EXPECTED AROUND 3 AM EDT FRIDAY. 

THE GALE WARNING HAS BEEN CANCELLED. 

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.

&&

$$

LHZ361-070900-
/O.CAN.KDTX.GL.W.0018.000000T0000Z-170407T1400Z/
LAKE HURON FROM 5NM EAST OF MACKINAC BRIDGE TO PRESQUE ISLE LT
BEYOND 5 NM OFF SHORE-
347 AM EDT FRI APR 7 2017

...GALE WARNING IS CANCELLED...

THE NATIONAL WEATHER SERVICE IN DETROIT/PONTIAC HAS CANCELLED THE
GALE WARNING. 

$$

LHZ421-422-071400-
/O.CON.KDTX.GL.W.0018.000000T0000Z-170407T1400Z/
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-
347 AM EDT FRI APR 7 2017

...GALE WARNING REMAINS IN EFFECT UNTIL 10 AM EDT THIS MORNING...

* WIND AND WAVES: DURING THE GALE WARNING...EXPECT SUSTAINED WINDS
  UP TO 34 KNOTS FROM THE NORTH WITH GUSTS UP TO 38 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 5 AM EDT FRIDAY 
  WITH THE LARGEST WAVES EXPECTED AROUND 4 AM EDT FRIDAY. 

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.

&&

$$

DG

254 
WHUS73 KDTX 071358
MWWDTX

URGENT - MARINE WEATHER MESSAGE
NATIONAL WEATHER SERVICE DETROIT/PONTIAC MI
958 AM EDT FRI APR 7 2017

...NORTHERLY GALES REMAIN IN PLACE OVER THE SOUTHERN BASIN OF LAKE
HURON THIS MORNING...

.NORTHWEST WINDS IN THE 30 TO 40 KNOT RANGE EARLY THIS MORNING WILL 
CONTINUE TO DIMINISH DURING THE DAY, DROPPING INTO THE 15 TO 25 KNOT 
RANGE THIS EVENING. WITH THE DOWNWARD TREND IN WINDS, STORM WARNINGS 
HAVE BEEN CONVERTED TO GALE WARNINGS, AND THE GALE WARNINGS ALONG 
THE NEARSHORE WATERS HAVE BEEN CONVERTED TO SMALL CRAFT ADVISORIES. 
A RIDGE OF HIGH PRESSURE ARRIVING SATURDAY MORNING WILL LEAD TO 
LIGHT WINDS THROUGH THE DAY ON SATURDAY, WITH INCREASING SOUTHERLY 
WINDS FOR THE SECOND HALF OF THE WEEKEND INTO MONDAY, BUT LIKELY 
REMAINING UNDER 30 KNOTS.

LHZ421-422-072000-
/O.CAN.KDTX.GL.W.0018.000000T0000Z-170407T1400Z/
/O.EXA.KDTX.SC.Y.0027.000000T0000Z-170407T2000Z/
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-
958 AM EDT FRI APR 7 2017

...SMALL CRAFT ADVISORY IN EFFECT UNTIL 4 PM EDT THIS AFTERNOON...
...GALE WARNING IS CANCELLED...

THE NATIONAL WEATHER SERVICE IN DETROIT/PONTIAC HAS ISSUED A
SMALL CRAFT ADVISORY...WHICH IS IN EFFECT UNTIL 4 PM EDT THIS
AFTERNOON. 

* WIND AND WAVES: DURING THE SMALL CRAFT ADVISORY...EXPECT
  SUSTAINED WINDS UP TO 31 KNOTS FROM THE NORTH WITH GUSTS UP TO
  30 KNOTS. THE LARGEST EXPECTED SIGNIFICANT WAVES WILL BE 11 FEET WITH
A POTENTIAL MAXIMUM WAVE HEIGHT OF 16 FEET. 

* TIMING: THE MAXIMUM WINDS ARE EXPECTED AROUND 9 AM EDT FRIDAY 
  WITH THE LARGEST WAVES EXPECTED AROUND 9 AM EDT FRIDAY. 

THE GALE WARNING HAS BEEN CANCELLED. 

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.

&&

$$

LHZ362-363-071500-
/O.CAN.KDTX.GL.W.0018.000000T0000Z-170407T2000Z/
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-
958 AM EDT FRI APR 7 2017

...GALE WARNING IS CANCELLED...

THE NATIONAL WEATHER SERVICE IN DETROIT/PONTIAC HAS CANCELLED THE
GALE WARNING. 

$$

LHZ441>443-462>464-072000-
/O.CON.KDTX.GL.W.0018.000000T0000Z-170407T2000Z/
PORT AUSTIN TO HARBOR BEACH MI-HARBOR BEACH TO PORT SANILAC MI-
PORT SANILAC TO PORT HURON 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-
958 AM EDT FRI APR 7 2017

...GALE WARNING REMAINS IN EFFECT UNTIL 4 PM EDT THIS AFTERNOON...

* WIND AND WAVES: DURING THE GALE WARNING...EXPECT SUSTAINED 
  WINDS UP TO 33 KNOTS FROM THE NORTH WITH GUSTS UP TO 43 
  KNOTS. THE LARGEST EXPECTED SIGNIFICANT WAVES WILL BE 16 FEET 
  WITH A POTENTIAL MAXIMUM WAVE HEIGHT OF 23 FEET. 

* TIMING: THE MAXIMUM WINDS ARE EXPECTED AROUND 9 AM EDT FRIDAY 
  WITH THE LARGEST WAVES EXPECTED AROUND 9 AM EDT FRIDAY. 

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-LEZ444-072000-
/O.CON.KDTX.SC.Y.0027.000000T0000Z-170407T2000Z/
LAKE ST. CLAIR-
MICHIGAN WATERS OF LAKE ERIE FROM DETROIT RIVER TO NORTH CAPE MI-
958 AM EDT FRI APR 7 2017

...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 4 PM EDT THIS
AFTERNOON...

* WIND AND WAVES: DURING THE SMALL CRAFT ADVISORY...EXPECT 
  SUSTAINED WINDS UP TO 26 KNOTS FROM THE NORTH WITH GUSTS UP 
  TO 32 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 9 AM EDT FRIDAY 
  WITH THE LARGEST WAVES EXPECTED AROUND 10 AM EDT FRIDAY. 

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.

&&

$$

CB

931 
WHUS73 KDTX 071959
MWWDTX

URGENT - MARINE WEATHER MESSAGE
NATIONAL WEATHER SERVICE DETROIT/PONTIAC MI
359 PM EDT FRI APR 7 2017

...NORTHERLY WINDS TO SLOWLY DIMINISH THIS EVENING...

.NORTHWEST WINDS ARE SLOWLY RELAXING AS SURFACE HIGH PRESSURE BEGINS 
TO PUSH INTO THE REGION. SPEEDS WILL DROP DRAMATICALLY AFTER SUNSET 
TONIGHT. AFTER A PERIOD OF LIGHT SOUTHWESTERLY FLOW ON SATURDAY, 
INCREASED SOUTHERLY FLOW WILL OCCUR ON SUNDAY. THE NEXT STORM SYSTEM 
WILL BRING AN ELEVATED CHANCE FOR SHOWERS AND THUNDERSTORMS MONDAY.

LHZ441>443-080200-
/O.CAN.KDTX.GL.W.0018.000000T0000Z-170407T2000Z/
/O.EXB.KDTX.SC.Y.0027.000000T0000Z-170408T0200Z/
PORT AUSTIN TO HARBOR BEACH MI-HARBOR BEACH TO PORT SANILAC MI-
PORT SANILAC TO PORT HURON MI-
359 PM EDT FRI APR 7 2017

...SMALL CRAFT ADVISORY IN EFFECT UNTIL 10 PM EDT THIS EVENING...
...GALE WARNING IS CANCELLED...

THE NATIONAL WEATHER SERVICE IN DETROIT/PONTIAC HAS ISSUED A
SMALL CRAFT ADVISORY...WHICH IS IN EFFECT UNTIL 10 PM EDT THIS
EVENING. 

* WIND AND WAVES: DURING THE SMALL CRAFT ADVISORY...EXPECT
  SUSTAINED WINDS UP TO 28 KNOTS FROM THE NORTH WITH GUSTS UP TO
  30 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 PM EDT FRIDAY 
  WITH THE LARGEST WAVES EXPECTED AROUND 3 PM EDT FRIDAY. 

THE GALE WARNING HAS BEEN CANCELLED. 

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.

&&

$$

LHZ462>464-072100-
/O.CAN.KDTX.GL.W.0018.000000T0000Z-170407T2000Z/
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-
359 PM EDT FRI APR 7 2017

...GALE WARNING IS CANCELLED...

THE NATIONAL WEATHER SERVICE IN DETROIT/PONTIAC HAS CANCELLED THE
GALE WARNING. 

$$

LCZ460-LEZ444-080200-
/O.EXT.KDTX.SC.Y.0027.000000T0000Z-170408T0200Z/
LAKE ST. CLAIR-
MICHIGAN WATERS OF LAKE ERIE FROM DETROIT RIVER TO NORTH CAPE MI-
359 PM EDT FRI APR 7 2017

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

THE SMALL CRAFT ADVISORY IS NOW IN EFFECT UNTIL 10 PM EDT THIS
EVENING. 

* WIND AND WAVES: DURING THE SMALL CRAFT ADVISORY...EXPECT 
  SUSTAINED WINDS UP TO 20 KNOTS FROM THE NORTH WITH GUSTS UP 
  TO 30 KNOTS. THE LARGEST EXPECTED SIGNIFICANT WAVES WILL BE 2 
  FEET WITH A POTENTIAL MAXIMUM WAVE HEIGHT OF 2 FEET. 

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

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.

&&

$$

LHZ421-422-080200-
/O.EXT.KDTX.SC.Y.0027.000000T0000Z-170408T0200Z/
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-
359 PM EDT FRI APR 7 2017

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

THE SMALL CRAFT ADVISORY IS NOW IN EFFECT UNTIL 10 PM EDT THIS
EVENING. 

* WIND AND WAVES: DURING THE SMALL CRAFT ADVISORY...EXPECT 
  SUSTAINED WINDS UP TO 15 KNOTS FROM THE NORTHWEST WITH GUSTS 
  UP TO 22 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 3 PM EDT FRIDAY 
  WITH THE LARGEST WAVES EXPECTED AROUND 3 PM EDT FRIDAY. 

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.

&&

$$

CB

Area Forecast Discussion
National Weather Service Detroit/Pontiac MI
1154 PM EDT Tue Apr 4 2017

.AVIATION...

Existing low VFR stratus on track to lift out of the southeast
Michigan airspace through the early morning period.  Satellite
trends correspond well with latest model guidance, lending
confidence expectations for this process to continue over all areas
by 07-08z.  This clearing sky, in conjunction with a gradually
diminishing northwest wind, will maintain the potential for some
degree of fog development before daybreak.  Continue to favor a
conservative approach /MVFR/ given the unclear signal, with just
enough wind and some increase in cirrus overnight perhaps acting to
limit greater development.  Winds turn to northeasterly and
strengthen again Wednesday, turning gusty during the afternoon
period.  Mid level cloud to thicken and lower with time into the
afternoon.  Deeper plume of moisture arriving in advance of strong
low pressure will bring a deteriorating conditions in developing
light rain toward evening.

For DTW...Existing low stratus to clear the terminal by 08z, per
extrapolation of upstream satellite trends.  Clear skies across the
lowest 5000 ft then expected through Wednesday afternoon.
Diminishing northwest wind overnight, shifting to northeasterly and
increasing Wednesday.

//DTW THRESHOLD PROBABILITIES...

* High for ceilings below 5000 ft prior to 08z, low thereafter
  overnight.  High again Wednesday evening.

&&

.PREV DISCUSSION...
Issued at 347 PM EDT Tue Apr 4 2017

DISCUSSION...

A fast moving mid level wave tracking east along the cold front
trailing the departing low will keep light rain showers going over
SE MI for a few more hours this afternoon. A few stray showers may
linger into the early evening but a weak area of high pressure will
begin building into the region which will help bring an end to the
showers. Could see some thinning of the clouds tonight and into
early Wednesday but cirrus associated with the next system will
already begin spreading north over the region.

Much attention in the forecast remains on the Wednesday night to
Friday period when a deep mid/upper level trough and associated
surface low will lift northeast out of the southern plains and
through the region. The expansive and dynamic system will cover much
of the eastern conus by Thursday morning with the northern and
western portion of the precip shield over lower MI through this
time. The center of the surface low is progged to track across
western Lake Erie initially as a strong jet streak rotates around
the base of the trough resulting in max height fall region shifting
toward the east coast causing the surface high to elongate with
trailing trough/low center just east of the area. This will keep
precip chances around possibly into Friday morning before pulling
away.

This system presents several forecast challenges from rainfall
amounts and possible flooding, to ptype and snowfall amounts, what
portion of the QPF goes to snow vs rain, and also strong winds. QPF
has been consistently in the 1-2 inch range across the CWA with
highest amounts across the Saginaw Valley and Thumb and lesser
amounts toward the Ohio border. Ptype continues to be a big issue as
thermal profiles hover around the 0C line up to nearly 10k feet at
times. Additionally the surface temp will likely be just above
freezing with dewpoints also in the low 30s which means wet bulb
cooling will be less of a factor than normal. Soundings also show a
warm layer developing in the 5-8kft layer as a result of the warm
conveyor belt wrapping around the system.

The deformation forcing will be quite strong with this dynamic
system and will lift north through the area Wednesday night. Models
continue to show this band of forcing eventually settling north and
west of our CWA but will be close enough to result in enhanced
precip rates for a period across the Saginaw Valley. Temperatures up
that way could be cold enough for more snow than rain during the
tail end of the deformation lifting through thus light snowfall
accumulations are in the forecast prior to 12Z Thursday. A
strengthening trowal will set up for Thursday with the deformation
band still nearby resulting in more snow across the north, most
likely mixing with rain, or switching back and forth. Ptype should
transition to rain quickly as one heads south out toward Flint
Wednesday night, but cold air gradually working southeast through
lower MI Thursday into the overnight will present a possible
changeover for all locations. The trowal will linger through
Thursday night as the system slowly lifts up the east coast. Light
accums will be possible through the overnight. All in all it looks
like the area will range from about 2-4 inches north of I69 and
maybe 0-2 inches to the south. With the thermal profile so
susceptible to small changes resulting in big forecast differences,
expect fine tuning with future forecast packages. If higher amounts
can materialize, a winter weather advisory will not be out of the
question, especially when taking into account strong wind gusts (see
next paragraph).

Lastly we'll quickly look at winds. Very strong northeasterly winds
will arrive on the backside of this system Thursday with nearly 50
knots as low as 925mb in the column. With mixing depths looking to
extend up to 900-925mb, we could see some good winds reach the
surface, especially near the Lake Huron Shoreline where unimpeded
flow off the lake will allow stronger gusts. Forecast will go with
gusts reaching 35-40 knots which may necessitate a Wind Advisory
headline.

A general drying trend will commence on Friday as the low moves east
and high pressure builds into the region. Drier conditions will
prevail through the weekend as high pressure remains in place. An
upper level ridge axis moving eastward across the Great Lakes over
the weekend will allow southerly flow to set up into early next
week. The result will be a moderating temperature trend with highs
in the 50s on Saturday increasing to the 60s on Sunday and near 70
on Monday. The next chance for rain and thunderstorms returns early
next week as low pressure approaches the region from the west.

MARINE...

Winds and waves will decrease during the night as weak high pressure
expands across the northern Great Lakes. Low pressure now developing
over the southern plains is forecast to strengthen as it lifts into
the Ohio Valley on Wednesday. The low will then lift across the
eastern Great Lakes Thursday and Thursday night where it is forecast
to undergo further deepening. This will result in developing
northeast winds on Wednesday, increasing to gale force across most
of Lake Huron Wednesday night. There is a high probability that wind
gusts will reach 35 knot gales Wed night. Further increase in the
winds is expected Thursday into Thursday night, while they slowly
back toward the north. By Thursday evening, gale force winds are
also expected across Lakes St Clair and Erie.

There is high probabilities that wind gusts will reach 40 to 45
knots on Lake Huron. Probability for storm force wind gusts on
southern Lake Huron late Thurs and Thurs night is around 50 percent.
This does suggest that later shifts may have to issue a storm
watch/warning for portions of Lake Huron.

HYDROLOGY...

A long duration precipitation event is forecast to begin Wednesday
afternoon/evening and persist into early Friday morning. The
precipitation will begin as rain on Wednesday. Some locations will
see a transition to snow Thursday and Thursday night. Total liquid
equivalent precipitation from this system is expected to range from
eight tenths of an inch up to 2 inches. The higher totals are
expected across the Saginaw Valley and Thumb regions. This amount of
precipitation combined with recent rainfall does suggest a chance
for area rivers to approach and/or exceed flood stage late in the
week. Even if the bulk of the precipitation falls as snow across the
Saginaw Valley, it will rapidly melt Fri into Saturday, so rises on
rivers are still expected.

Prolonged strong northeast winds on Saginaw Bay is likely to slow
the discharge from the Saginaw River. This may result in minor
flooding along the river Thursday.

&&

.DTX WATCHES/WARNINGS/ADVISORIES...
MI...NONE.
Lake Huron...Gale Watch from late Wednesday night through Friday afternoon for
     LHZ362-363-441-462.

     Gale Watch from Thursday afternoon through Friday afternoon for
     LHZ442-443-463-464.

     Gale Watch from late Wednesday night through late Thursday night
     for LHZ361.

     Gale Watch from Wednesday evening through Friday afternoon for
     LHZ421-422.

Lake St Clair...Gale Watch from Thursday evening through late Thursday night for
     LCZ460.

Michigan waters of Lake Erie...Gale Watch from Thursday evening through late Thursday night for
     LEZ444.

&&

AVIATION.....MR
DISCUSSION...DRK/JD
MARINE.......SC
HYDROLOGY....SC

You can obtain your latest National Weather Service forecasts online
at www.weather.gov/detroit.

Hazardous Weather Outlook
National Weather Service Detroit/Pontiac MI
410 PM EDT Tue Apr 4 2017

MIZ060>063-068>070-075-076-082-083-052015-
Shiawassee-Genesee-Lapeer-St. Clair-Livingston-Oakland-Macomb-
Washtenaw-Wayne-Lenawee-Monroe-
410 PM EDT Tue Apr 4 2017

This hazardous weather outlook is for portions of southeast
Michigan.

.DAY ONE...This Afternoon and Tonight

No hazardous weather is expected at this time.

.DAYS TWO THROUGH SEVEN...Wednesday through Monday

A strong low pressure system will track through the region Wednesday
through Friday bringing a mix of precipitation to the area. Rain
will potentially mix with snow at times late Wednesday night through
Thursday night. At this time...precipitation is expected to remain
mostly rain through Thursday. Light snow accumulations will then be
possible Thursday night.

Northeasterly winds will also increase on Thursday behind this low
pressure system with gusts possibly reaching 45 mph. A wind advisory
may be needed.

.SPOTTER INFORMATION STATEMENT...

Spotter activation will not be needed today and tonight.

MIZ047>049-053>055-052015-
Midland-Bay-Huron-Saginaw-Tuscola-Sanilac-
410 PM EDT Tue Apr 4 2017

This hazardous weather outlook is for portions of southeast
Michigan.

.DAY ONE...This Afternoon and Tonight

No hazardous weather is expected at this time.

.DAYS TWO THROUGH SEVEN...Wednesday through Monday

A strong low pressure system will track through the region Wednesday
through Friday bringing a mix of precipitation to the area. Rain
will mix with snow late Wednesday night before transitioning to all
snow either Thursday or Thursday night. At this time light snow
accumulations are expected late Thursday into Thursday night.
However...the expected snowfall is highly sensitive to the forecast
temperature and further revisions to the forecast are anticipated.

In addition...northeasterly winds will also increase on Thursday
behind this low pressure system with gusts possibly reaching 45 mph,
especially along the Lake Huron shoreline. A wind advisory may be
needed.

.SPOTTER INFORMATION STATEMENT...

Spotter activation will not be needed today and tonight.

LCZ460-LEZ444-LHZ361>363-421-422-441>443-462>464-052015-
Lake St. Clair-
Michigan Waters of Lake Erie from Detroit River to North Cape MI-
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-
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-
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-
410 PM EDT Tue Apr 4 2017

This hazardous weather outlook is for portions of Lake Erie, Lake
Huron and Lake St Clair.

.DAY ONE...This Afternoon and Tonight

No hazardous weather is expected at this time.

.DAYS TWO THROUGH SEVEN...Wednesday through Monday

Gale watches are in effect. See the forecast for detail.

.SPOTTER INFORMATION STATEMENT...

Spotter activation will not be needed today and tonight.

You can obtain your latest National Weather Service forecasts online
at www.weather.gov/detroit.

DRK