Gale Warning 40, NWS Detroit, MI

385 
WHUS73 KDTX 051454
MWWDTX

URGENT - MARINE WEATHER MESSAGE
NATIONAL WEATHER SERVICE DETROIT/PONTIAC MI
954 AM EST TUE DEC 5 2017

...STRONG GALES AND MARGINAL STORMS TODAY...

.GALE WARNINGS REMAIN IN EFFECT FOR ALL LAKE HURON MARINE AREAS AND 
UPGRADED TO STORM WARNING FOR OUTER SAGINAW BAY AND CENTRAL LAKE 
HURON. LAKE ST CLAIR IS UPGRADED TO A GALE WARNING AND WESTERN LAKE 
ERIE REMAINS AT SMALL CRAFT ADVISORY FOR NOW. THE WESTERLY GALES AND 
GUSTS TO STORM FORCE ON LAKE HURON WILL BE DUE TO A LARGE AND STRONG 
LOW PRESSURE SYSTEM MOVING FROM LAKE SUPERIOR INTO NORTHERN ONTARIO 
WHILE DEEPENING TO 970 MB. MULTIPLE OBSERVATIONS DURING THE NIGHT 
INDICATED GUSTS IN THE UPPER 40 KT RANGE OVER SOUTHERN WI, IA, 
NORTHERN IL WHILE THE SYSTEM WAS AROUND 982 MB, AND CONSIDERING THE 
DEEPENING TREND DURING THE REST OF THE DAY, AN UPGRADE TO STORM 
WARNING IS WARRANTED FOR OUTER SAGINAW BAY AND CENTRAL LAKE HURON. 
PEAK GUSTS IN THAT AREA WILL BE VERY CLOSE TO 50 KNOTS ON SOUTHWEST 
DIRECTION FUNNELING THROUGH SAGINAW BAY AND INTO THE OPEN WATERS OF 
THE LAKE. WIND CONDITIONS WILL DROP OFF FROM THE PEAK LATER TONIGHT 
BUT 35-40 KNOT GALES WILL THEN CONTINUE THROUGH WEDNESDAY. COLDER 
AIR MOVING INTO THE REGION WILL ALSO PROMOTE INCREASING COVERAGE OF 
LAKE EFFECT SNOW SQUALLS TO FURTHER HINDER MARINE CONDITIONS THROUGH 
THE END OF THE WEEK.

LHZ363-441-462-052115-
/O.CON.KDTX.SR.W.0004.000000T0000Z-171206T0000Z/
/O.CON.KDTX.GL.W.0040.171206T0000Z-171206T2100Z/
LAKE HURON FROM STURGEON POINT TO ALABASTER MI BEYOND 5NM OFF
SHORE-PORT AUSTIN TO HARBOR BEACH MI-
LAKE HURON FROM PORT AUSTIN TO HARBOR BEACH BEYOND 5NM OFF SHORE-
954 AM EST TUE DEC 5 2017

...STORM WARNING REMAINS IN EFFECT UNTIL 7 PM EST THIS EVENING...
...GALE WARNING REMAINS IN EFFECT FROM 7 PM THIS EVENING TO 4 PM
EST WEDNESDAY...

* WIND AND WAVES: DURING THE STORM WARNING...EXPECT SUSTAINED 
  WINDS UP TO 38 KNOTS FROM THE SOUTHWEST 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 9 AM EST TUESDAY 
  WITH THE LARGEST WAVES EXPECTED AROUND 11 AM EST TUESDAY. 

* WIND AND WAVES: DURING THE GALE WARNING...EXPECT SUSTAINED 
  WINDS UP TO 36 KNOTS FROM THE WEST WITH GUSTS UP TO 46 KNOTS. 
  THE LARGEST EXPECTED SIGNIFICANT WAVES WILL BE 13 FEET WITH A 
  POTENTIAL MAXIMUM WAVE HEIGHT OF 19 FEET. 

* TIMING: THE MAXIMUM WINDS ARE EXPECTED AROUND 7 PM EST TUESDAY 
  WITH THE LARGEST WAVES EXPECTED AROUND 7 PM EST TUESDAY. 

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.

&&

$$

LHZ421-052115-
/O.CON.KDTX.SR.W.0004.000000T0000Z-171206T0000Z/
/O.CON.KDTX.GL.W.0039.171206T0000Z-171206T2100Z/
OUTER SAGINAW BAY SW OF ALABASTER TO PORT AUSTIN MI TO INNER
SAGINAW BAY-
954 AM EST TUE DEC 5 2017

...STORM WARNING REMAINS IN EFFECT UNTIL 7 PM EST THIS EVENING...
...GALE WARNING REMAINS IN EFFECT FROM 7 PM THIS EVENING TO 4 PM
EST WEDNESDAY...

* WIND AND WAVES: DURING THE STORM WARNING...EXPECT SUSTAINED 
  WINDS UP TO 37 KNOTS FROM THE SOUTHWEST WITH GUSTS UP TO 48 
  KNOTS. THE LARGEST EXPECTED SIGNIFICANT WAVES WILL BE 10 FEET 
  WITH A POTENTIAL MAXIMUM WAVE HEIGHT OF 14 FEET. 

* TIMING: THE MAXIMUM WINDS ARE EXPECTED AROUND 9 AM EST TUESDAY 
  WITH THE LARGEST WAVES EXPECTED AROUND 4 PM EST TUESDAY. 

* WIND AND WAVES: DURING THE GALE WARNING...EXPECT SUSTAINED 
  WINDS UP TO 35 KNOTS FROM THE WEST WITH GUSTS UP TO 44 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 7 PM EST TUESDAY 
  WITH THE LARGEST WAVES EXPECTED AROUND 10 PM EST TUESDAY. 

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.

&&

$$

LHZ361-362-052115-
/O.CON.KDTX.GL.W.0039.000000T0000Z-171206T2100Z/
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-
954 AM EST TUE DEC 5 2017

...GALE WARNING REMAINS IN EFFECT UNTIL 4 PM EST WEDNESDAY...

* WIND AND WAVES: DURING THE GALE WARNING...EXPECT SUSTAINED 
  WINDS UP TO 36 KNOTS FROM THE SOUTHWEST WITH GUSTS UP TO 47 
  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 10 AM EST 
  TUESDAY WITH THE LARGEST WAVES EXPECTED AROUND 11 AM EST 
  TUESDAY. 

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.

&&

$$

LHZ442-443-463-464-052115-
/O.CON.KDTX.GL.W.0039.000000T0000Z-171206T2100Z/
HARBOR BEACH TO PORT SANILAC MI-PORT SANILAC TO PORT HURON MI-
LAKE HURON FROM HARBOR BEACH TO PORT SANILAC BEYOND 5NM OFF SHORE-
LAKE HURON FROM PORT SANILAC TO PORT HURON BEYOND 5NM OFF SHORE-
954 AM EST TUE DEC 5 2017

...GALE WARNING REMAINS IN EFFECT UNTIL 4 PM EST WEDNESDAY...

* WIND AND WAVES: DURING THE GALE WARNING...EXPECT SUSTAINED 
  WINDS UP TO 32 KNOTS FROM THE SOUTHWEST WITH GUSTS UP TO 42 
  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 6 PM EST TUESDAY 
  WITH THE LARGEST WAVES EXPECTED AROUND 6 PM EST TUESDAY. 

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.

&&

$$

LHZ422-052115-
/O.CON.KDTX.GL.W.0039.000000T0000Z-171206T2100Z/
INNER SAGINAW BAY SW OF POINT AU GRES TO BAY PORT MI-
954 AM EST TUE DEC 5 2017

...GALE WARNING REMAINS IN EFFECT UNTIL 4 PM EST WEDNESDAY...

* WIND AND WAVES: DURING THE GALE WARNING...EXPECT SUSTAINED 
  WINDS UP TO 32 KNOTS FROM THE SOUTHWEST WITH GUSTS UP TO 43 
  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 9 AM EST TUESDAY 
  WITH THE LARGEST WAVES EXPECTED AROUND 4 PM EST TUESDAY. 

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.

&&

$$

LCZ460-052115-
/O.CON.KDTX.GL.W.0039.000000T0000Z-171206T0300Z/
LAKE ST CLAIR-
954 AM EST TUE DEC 5 2017

...GALE WARNING REMAINS IN EFFECT UNTIL 10 PM EST THIS EVENING...

* WIND AND WAVES: DURING THE GALE WARNING...EXPECT SUSTAINED 
  WINDS UP TO 24 KNOTS FROM THE WEST WITH GUSTS UP TO 39 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 4 PM EST TUESDAY 
  WITH THE LARGEST WAVES EXPECTED AROUND 4 PM EST TUESDAY. 

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.

&&

$$

LEZ444-052115-
/O.CON.KDTX.SC.Y.0089.000000T0000Z-171206T2100Z/
/O.NEW.KDTX.LO.Y.0006.171205T1700Z-171206T0900Z/
MICHIGAN WATERS OF LAKE ERIE FROM DETROIT RIVER TO NORTH CAPE MI-
954 AM EST TUE DEC 5 2017

...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 4 PM EST
WEDNESDAY...
...LOW WATER ADVISORY IN EFFECT UNTIL 4 AM EST WEDNESDAY...

THE NATIONAL WEATHER SERVICE IN DETROIT/PONTIAC HAS ISSUED A LOW
WATER ADVISORY WHICH IS IN EFFECT UNTIL 4 AM EST WEDNESDAY. 

* WATER LEVELS...EXPECTED TO DROP UP TO ONE FOOT BELOW THE 
  CRITICAL MARK FOR SAFE NAVIGATION IN THE WESTERN BASIN THIS 
  AFTERNOON THROUGH THE FIRST HALF OF TONIGHT.

* WIND AND WAVES: DURING THE SMALL CRAFT ADVISORY...EXPECT 
  SUSTAINED WINDS UP TO 25 KNOTS FROM THE WEST WITH GUSTS UP TO 
  35 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 4 PM EST TUESDAY 
  WITH THE LARGEST WAVES EXPECTED AROUND 5 PM EST TUESDAY. 

REFER TO THE LATEST MARINE FORECASTS FOR GREATER DETAIL.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A LOW WATER ADVISORY MEANS WATER LEVELS ARE EXPECTED TO BE
SIGNIFICANTLY BELOW AVERAGE. MARINERS SHOULD USE EXTREME CAUTION
AND TRANSIT AT THE SLOWEST SAFE NAVIGABLE SPEED TO MINIMIZE
IMPACT.

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.

&&

$$

JVC

920 
WHUS73 KDTX 052021
MWWDTX

URGENT - MARINE WEATHER MESSAGE
NATIONAL WEATHER SERVICE DETROIT/PONTIAC MI
321 PM EST TUE DEC 5 2017

...STRONG SOUTHWEST GALES AND MARGINAL STORMS INTO TONIGHT...


LHZ441-462-060915-
/O.CAN.KDTX.SR.W.0004.000000T0000Z-171206T0000Z/
/O.EXT.KDTX.GL.W.0040.171205T2021Z-171206T2100Z/
PORT AUSTIN TO HARBOR BEACH MI-
LAKE HURON FROM PORT AUSTIN TO HARBOR BEACH BEYOND 5NM OFF SHORE-
321 PM EST TUE DEC 5 2017

...GALE WARNING NOW IN EFFECT UNTIL 4 PM EST WEDNESDAY...
...STORM WARNING IS CANCELLED...

THE NATIONAL WEATHER SERVICE IN DETROIT/PONTIAC HAS CANCELLED THE
STORM WARNING. THE GALE WARNING IS NOW IN EFFECT UNTIL 4 PM EST
WEDNESDAY. 

* WIND AND WAVES: DURING THE GALE WARNING...EXPECT SUSTAINED 
  WINDS UP TO 37 KNOTS FROM THE WEST WITH GUSTS UP TO 47 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 6 PM EST TUESDAY 
  WITH THE LARGEST WAVES EXPECTED AROUND 8 PM EST TUESDAY. 

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.

&&

$$

LHZ421-060915-
/O.CAN.KDTX.SR.W.0004.000000T0000Z-171206T0000Z/
/O.EXT.KDTX.GL.W.0039.171205T2021Z-171206T2100Z/
OUTER SAGINAW BAY SW OF ALABASTER TO PORT AUSTIN MI TO INNER
SAGINAW BAY-
321 PM EST TUE DEC 5 2017

...GALE WARNING NOW IN EFFECT UNTIL 4 PM EST WEDNESDAY...
...STORM WARNING IS CANCELLED...

THE NATIONAL WEATHER SERVICE IN DETROIT/PONTIAC HAS CANCELLED THE
STORM WARNING. THE GALE WARNING IS NOW IN EFFECT UNTIL 4 PM EST
WEDNESDAY. 

* WIND AND WAVES: DURING THE GALE WARNING...EXPECT SUSTAINED 
  WINDS UP TO 36 KNOTS FROM THE SOUTHWEST WITH GUSTS UP TO 46 
  KNOTS. THE LARGEST EXPECTED SIGNIFICANT WAVES WILL BE 10 FEET 
  WITH A POTENTIAL MAXIMUM WAVE HEIGHT OF 14 FEET. 

* TIMING: THE MAXIMUM WINDS ARE EXPECTED AROUND 4 PM EST TUESDAY 
  WITH THE LARGEST WAVES EXPECTED AROUND 7 PM EST TUESDAY. 

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.

&&

$$

LHZ363-060915-
/O.CON.KDTX.SR.W.0004.000000T0000Z-171206T0000Z/
/O.CON.KDTX.GL.W.0040.171206T0000Z-171206T2100Z/
LAKE HURON FROM STURGEON POINT TO ALABASTER MI BEYOND 5NM OFF
SHORE-
321 PM EST TUE DEC 5 2017

...STORM WARNING REMAINS IN EFFECT UNTIL 7 PM EST THIS EVENING...
...GALE WARNING REMAINS IN EFFECT FROM 7 PM THIS EVENING TO 4 PM
EST WEDNESDAY...

* WIND AND WAVES: DURING THE STORM WARNING...EXPECT SUSTAINED 
  WINDS UP TO 38 KNOTS FROM THE SOUTHWEST WITH GUSTS UP TO 49 
  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 4 PM EST TUESDAY 
  WITH THE LARGEST WAVES EXPECTED AROUND 5 PM EST TUESDAY. 

* WIND AND WAVES: DURING THE GALE WARNING...EXPECT SUSTAINED 
  WINDS UP TO 37 KNOTS FROM THE WEST 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 7 PM EST TUESDAY 
  WITH THE LARGEST WAVES EXPECTED AROUND 7 PM EST TUESDAY. 

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.

&&

$$

LHZ361-362-060915-
/O.CON.KDTX.GL.W.0039.000000T0000Z-171206T2100Z/
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-
321 PM EST TUE DEC 5 2017

...GALE WARNING REMAINS IN EFFECT UNTIL 4 PM EST WEDNESDAY...

* WIND AND WAVES: DURING THE GALE WARNING...EXPECT SUSTAINED 
  WINDS UP TO 35 KNOTS FROM THE SOUTHWEST WITH GUSTS UP TO 46 
  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 7 PM EST TUESDAY 
  WITH THE LARGEST WAVES EXPECTED AROUND 5 PM EST TUESDAY. 

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.

&&

$$

LHZ442-443-463-464-060915-
/O.CON.KDTX.GL.W.0039.000000T0000Z-171206T2100Z/
HARBOR BEACH TO PORT SANILAC MI-PORT SANILAC TO PORT HURON MI-
LAKE HURON FROM HARBOR BEACH TO PORT SANILAC BEYOND 5NM OFF SHORE-
LAKE HURON FROM PORT SANILAC TO PORT HURON BEYOND 5NM OFF SHORE-
321 PM EST TUE DEC 5 2017

...GALE WARNING REMAINS IN EFFECT UNTIL 4 PM EST WEDNESDAY...

* WIND AND WAVES: DURING THE GALE WARNING...EXPECT SUSTAINED 
  WINDS UP TO 34 KNOTS FROM THE WEST WITH GUSTS UP TO 43 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 6 PM EST TUESDAY 
  WITH THE LARGEST WAVES EXPECTED AROUND 7 PM EST TUESDAY. 

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.

&&

$$

LHZ422-060915-
/O.CON.KDTX.GL.W.0039.000000T0000Z-171206T2100Z/
INNER SAGINAW BAY SW OF POINT AU GRES TO BAY PORT MI-
321 PM EST TUE DEC 5 2017

...GALE WARNING REMAINS IN EFFECT UNTIL 4 PM EST WEDNESDAY...

* WIND AND WAVES: DURING THE GALE WARNING...EXPECT SUSTAINED 
  WINDS UP TO 33 KNOTS FROM THE SOUTHWEST WITH GUSTS UP TO 41 
  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 4 PM EST TUESDAY 
  WITH THE LARGEST WAVES EXPECTED AROUND 3 PM EST TUESDAY. 

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.

&&

$$

LCZ460-060300-
/O.CON.KDTX.GL.W.0039.000000T0000Z-171206T0300Z/
LAKE ST CLAIR-
321 PM EST TUE DEC 5 2017

...GALE WARNING REMAINS IN EFFECT UNTIL 10 PM EST THIS EVENING...

* WIND AND WAVES: DURING THE GALE WARNING...EXPECT SUSTAINED 
  WINDS UP TO 25 KNOTS FROM THE WEST WITH GUSTS UP TO 34 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 4 PM EST TUESDAY 
  WITH THE LARGEST WAVES EXPECTED AROUND 4 PM EST TUESDAY. 

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.

&&

$$

LEZ444-060915-
/O.CON.KDTX.LO.Y.0006.000000T0000Z-171206T0900Z/
/O.CON.KDTX.SC.Y.0089.000000T0000Z-171206T2100Z/
MICHIGAN WATERS OF LAKE ERIE FROM DETROIT RIVER TO NORTH CAPE MI-
321 PM EST TUE DEC 5 2017

...LOW WATER ADVISORY REMAINS IN EFFECT UNTIL 4 AM EST
WEDNESDAY...
...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 4 PM EST
WEDNESDAY...

* WATER LEVELS...EXPECTED TO DROP UP TO ONE FOOT BELOW THE 
  CRITICAL MARK FOR SAFE NAVIGATION IN THE WESTERN BASIN THROUGH 
  THE FIRST HALF OF TONIGHT BEFORE STARTING TO RISE. 

* WIND AND WAVES: DURING THE SMALL CRAFT ADVISORY...EXPECT 
  SUSTAINED WINDS UP TO 25 KNOTS FROM THE WEST WITH GUSTS UP TO 
  35 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 EST TUESDAY 
  WITH THE LARGEST WAVES EXPECTED AROUND 5 PM EST TUESDAY. 

REFER TO THE LATEST MARINE FORECASTS FOR GREATER DETAIL.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A LOW WATER ADVISORY MEANS WATER LEVELS ARE EXPECTED TO BE
SIGNIFICANTLY BELOW AVERAGE. MARINERS SHOULD USE EXTREME CAUTION
AND TRANSIT AT THE SLOWEST SAFE NAVIGABLE SPEED TO MINIMIZE
IMPACT.

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.

&&

$$

JVC

200 
WHUS73 KDTX 052359
MWWDTX

URGENT - MARINE WEATHER MESSAGE
NATIONAL WEATHER SERVICE DETROIT/PONTIAC MI
659 PM EST TUE DEC 5 2017

...STRONG SOUTHWEST GALES AND MARGINAL STORMS INTO TONIGHT...

LHZ363-061200-
/O.EXT.KDTX.SR.W.0004.000000T0000Z-171206T0300Z/
/O.EXT.KDTX.GL.W.0040.171206T0300Z-171206T2100Z/
LAKE HURON FROM STURGEON POINT TO ALABASTER MI BEYOND 5NM OFF
SHORE-
659 PM EST TUE DEC 5 2017

...STORM WARNING NOW IN EFFECT UNTIL 10 PM EST THIS EVENING...
...GALE WARNING NOW IN EFFECT FROM 10 PM THIS EVENING TO 4 PM EST
WEDNESDAY...

THE STORM WARNING IS NOW IN EFFECT UNTIL 10 PM EST THIS EVENING. 

* WIND AND WAVES: DURING THE STORM WARNING...EXPECT SUSTAINED 
  WINDS UP TO 37 KNOTS FROM THE SOUTHWEST 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 6 PM EST TUESDAY 
  WITH THE LARGEST WAVES EXPECTED AROUND 6 PM EST TUESDAY. 

THE GALE WARNING IS NOW IN EFFECT FROM 10 PM THIS EVENING TO 4 PM
EST WEDNESDAY. 

* WIND AND WAVES: DURING THE GALE WARNING...EXPECT SUSTAINED 
  WINDS UP TO 35 KNOTS FROM THE WEST WITH GUSTS UP TO 46 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 10 PM EST 
  TUESDAY WITH THE LARGEST WAVES EXPECTED AROUND 10 PM EST 
  TUESDAY. 

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.

&&

$$

LHZ441-462-061200-
/O.CON.KDTX.GL.W.0040.000000T0000Z-171206T2100Z/
PORT AUSTIN TO HARBOR BEACH MI-
LAKE HURON FROM PORT AUSTIN TO HARBOR BEACH BEYOND 5NM OFF SHORE-
659 PM EST TUE DEC 5 2017

...GALE WARNING REMAINS IN EFFECT UNTIL 4 PM EST WEDNESDAY...

* WIND AND WAVES: DURING THE GALE WARNING...EXPECT SUSTAINED 
  WINDS UP TO 37 KNOTS FROM THE WEST WITH GUSTS UP TO 47 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 6 PM EST TUESDAY 
  WITH THE LARGEST WAVES EXPECTED AROUND 8 PM EST TUESDAY. 

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.

&&

$$

LHZ421-061200-
/O.CON.KDTX.GL.W.0039.000000T0000Z-171206T2100Z/
OUTER SAGINAW BAY SW OF ALABASTER TO PORT AUSTIN MI TO INNER
SAGINAW BAY-
659 PM EST TUE DEC 5 2017

...GALE WARNING REMAINS IN EFFECT UNTIL 4 PM EST WEDNESDAY...

* WIND AND WAVES: DURING THE GALE WARNING...EXPECT SUSTAINED 
  WINDS UP TO 36 KNOTS FROM THE WEST WITH GUSTS UP TO 46 KNOTS. 
  THE LARGEST EXPECTED SIGNIFICANT WAVES WILL BE 10 FEET WITH A 
  POTENTIAL MAXIMUM WAVE HEIGHT OF 14 FEET. 

* TIMING: THE MAXIMUM WINDS ARE EXPECTED AROUND 6 PM EST TUESDAY 
  WITH THE LARGEST WAVES EXPECTED AROUND 7 PM EST TUESDAY. 

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.

&&

$$

LHZ361-362-061200-
/O.CON.KDTX.GL.W.0039.000000T0000Z-171206T2100Z/
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-
659 PM EST TUE DEC 5 2017

...GALE WARNING REMAINS IN EFFECT UNTIL 4 PM EST WEDNESDAY...

* WIND AND WAVES: DURING THE GALE WARNING...EXPECT SUSTAINED 
  WINDS UP TO 35 KNOTS FROM THE SOUTHWEST WITH GUSTS UP TO 46 
  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 7 PM EST TUESDAY 
  WITH THE LARGEST WAVES EXPECTED AROUND 6 PM EST TUESDAY. 

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.

&&

$$

LHZ442-443-463-464-061200-
/O.CON.KDTX.GL.W.0039.000000T0000Z-171206T2100Z/
HARBOR BEACH TO PORT SANILAC MI-PORT SANILAC TO PORT HURON MI-
LAKE HURON FROM HARBOR BEACH TO PORT SANILAC BEYOND 5NM OFF SHORE-
LAKE HURON FROM PORT SANILAC TO PORT HURON BEYOND 5NM OFF SHORE-
659 PM EST TUE DEC 5 2017

...GALE WARNING REMAINS IN EFFECT UNTIL 4 PM EST WEDNESDAY...

* WIND AND WAVES: DURING THE GALE WARNING...EXPECT SUSTAINED 
  WINDS UP TO 34 KNOTS FROM THE WEST WITH GUSTS UP TO 43 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 6 PM EST TUESDAY 
  WITH THE LARGEST WAVES EXPECTED AROUND 7 PM EST TUESDAY. 

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.

&&

$$

LHZ422-061200-
/O.CON.KDTX.GL.W.0039.000000T0000Z-171206T2100Z/
INNER SAGINAW BAY SW OF POINT AU GRES TO BAY PORT MI-
659 PM EST TUE DEC 5 2017

...GALE WARNING REMAINS IN EFFECT UNTIL 4 PM EST WEDNESDAY...

* WIND AND WAVES: DURING THE GALE WARNING...EXPECT SUSTAINED 
  WINDS UP TO 33 KNOTS FROM THE WEST WITH GUSTS UP TO 41 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 6 PM EST TUESDAY 
  WITH THE LARGEST WAVES EXPECTED AROUND 6 PM EST TUESDAY. 

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.

&&

$$

LCZ460-060300-
/O.CON.KDTX.GL.W.0039.000000T0000Z-171206T0300Z/
LAKE ST CLAIR-
659 PM EST TUE DEC 5 2017

...GALE WARNING REMAINS IN EFFECT UNTIL 10 PM EST THIS EVENING...

* WIND AND WAVES: DURING THE GALE WARNING...EXPECT SUSTAINED 
  WINDS UP TO 25 KNOTS FROM THE WEST 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 8 PM EST TUESDAY 
  WITH THE LARGEST WAVES EXPECTED AROUND 6 PM EST TUESDAY. 

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.

&&

$$

LEZ444-061200-
/O.CON.KDTX.LO.Y.0006.000000T0000Z-171206T0900Z/
/O.CON.KDTX.SC.Y.0089.000000T0000Z-171206T2100Z/
MICHIGAN WATERS OF LAKE ERIE FROM DETROIT RIVER TO NORTH CAPE MI-
659 PM EST TUE DEC 5 2017

...LOW WATER ADVISORY REMAINS IN EFFECT UNTIL 4 AM EST
WEDNESDAY...
...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 4 PM EST
WEDNESDAY...

* EXPECT WATER LEVELS TO DROP UP TO ONE FOOT BELOW THE CRITICAL 
  MARK FOR SAFE NAVIGATION IN THE WESTERN BASIN THROUGH THE FIRST 
  HALF OF TONIGHT BEFORE STARTING TO RISE. 

* WIND AND WAVES: DURING THE SMALL CRAFT ADVISORY...EXPECT 
  SUSTAINED WINDS UP TO 25 KNOTS FROM THE WEST WITH GUSTS UP TO 
  29 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 9 PM EST TUESDAY 
  WITH THE LARGEST WAVES EXPECTED AROUND 10 PM EST TUESDAY. 

REFER TO THE LATEST MARINE FORECASTS FOR GREATER DETAIL.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A LOW WATER ADVISORY MEANS WATER LEVELS ARE EXPECTED TO BE
SIGNIFICANTLY BELOW AVERAGE. MARINERS SHOULD USE EXTREME CAUTION
AND TRANSIT AT THE SLOWEST SAFE NAVIGABLE SPEED TO MINIMIZE
IMPACT.

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.

&&

$$

MR

934 
WHUS73 KDTX 060248
MWWDTX

URGENT - MARINE WEATHER MESSAGE
NATIONAL WEATHER SERVICE DETROIT/PONTIAC MI
948 PM EST TUE DEC 5 2017

...SOUTHWEST GALES THROUGH WEDNESDAY...

.GALES WILL PERSIST THROUGH WEDNESDAY AS CONTINUED COLD AIR 
ADVECTION WITHIN A TIGHT WESTERLY PRESSURE GRADIENT KEEPS UNSTABLE
CONDITIONS OVER THE WATERS. SLIGHTLY LOWER WIND SPEEDS ACROSS 
LAKE ST CLAIR AND LAKE ERIE BEING FARTHER REMOVED FROM THE LOW 
THUS A SMALL CRAFT IS IN EFFECT FOR LAKE ERIE ALONG WITH A LOW 
WATER ADVISORY. COLDER AIR MOVING IN MID TO LATE WEEK WILL ALSO 
INCREASING COVERAGE OF LAKE EFFECT SNOW SQUALLS TO FURTHER HINDER 
MARINE CONDITIONS.

LCZ460-061500-
/O.CAN.KDTX.GL.W.0039.000000T0000Z-171206T0300Z/
/O.EXA.KDTX.SC.Y.0089.000000T0000Z-171206T2100Z/
LAKE ST CLAIR-
948 PM EST TUE DEC 5 2017

...SMALL CRAFT ADVISORY IN EFFECT UNTIL 4 PM EST WEDNESDAY...
...GALE WARNING IS CANCELLED...

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

* WIND AND WAVES: DURING THE SMALL CRAFT ADVISORY...EXPECT 
  SUSTAINED WINDS UP TO 25 KNOTS FROM THE SOUTHWEST WITH GUSTS 
  UP TO 30 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 10 PM EST 
  TUESDAY WITH THE LARGEST WAVES EXPECTED AROUND 10 PM EST 
  TUESDAY. 

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.

&&

$$

LHZ363-061500-
/O.EXP.KDTX.SR.W.0004.000000T0000Z-171206T0300Z/
/O.CON.KDTX.GL.W.0040.171206T0300Z-171206T2100Z/
LAKE HURON FROM STURGEON POINT TO ALABASTER MI BEYOND 5NM OFF
SHORE-
948 PM EST TUE DEC 5 2017

...GALE WARNING REMAINS IN EFFECT UNTIL 4 PM EST WEDNESDAY...
...STORM WARNING WILL EXPIRE AT 10 PM EST THIS EVENING...

THE STORM WARNING WILL EXPIRE AT 10 PM EST THIS EVENING. 

* WIND AND WAVES: DURING THE STORM WARNING...EXPECT SUSTAINED 
  WINDS UP TO 36 KNOTS FROM THE WEST WITH GUSTS UP TO 47 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 9 PM EST TUESDAY 
  WITH THE LARGEST WAVES EXPECTED AROUND 9 PM EST TUESDAY. 

* WIND AND WAVES: DURING THE GALE WARNING...EXPECT SUSTAINED 
  WINDS UP TO 36 KNOTS FROM THE WEST WITH GUSTS UP TO 47 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 10 PM EST 
  TUESDAY WITH THE LARGEST WAVES EXPECTED AROUND 10 PM EST 
  TUESDAY. 

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.

&&

$$

LHZ441-462-061500-
/O.CON.KDTX.GL.W.0040.000000T0000Z-171206T2100Z/
PORT AUSTIN TO HARBOR BEACH MI-
LAKE HURON FROM PORT AUSTIN TO HARBOR BEACH BEYOND 5NM OFF SHORE-
948 PM EST TUE DEC 5 2017

...GALE WARNING REMAINS IN EFFECT UNTIL 4 PM EST WEDNESDAY...

* WIND AND WAVES: DURING THE GALE WARNING...EXPECT SUSTAINED 
  WINDS UP TO 34 KNOTS FROM THE SOUTHWEST WITH GUSTS UP TO 44 
  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 11 PM EST 
  TUESDAY WITH THE LARGEST WAVES EXPECTED AROUND 9 PM EST 
  TUESDAY. 

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.

&&

$$

LHZ421-061500-
/O.CON.KDTX.GL.W.0039.000000T0000Z-171206T2100Z/
OUTER SAGINAW BAY SW OF ALABASTER TO PORT AUSTIN MI TO INNER
SAGINAW BAY-
948 PM EST TUE DEC 5 2017

...GALE WARNING REMAINS IN EFFECT UNTIL 4 PM EST WEDNESDAY...

* WIND AND WAVES: DURING THE GALE WARNING...EXPECT SUSTAINED 
  WINDS UP TO 39 KNOTS FROM THE SOUTHWEST WITH GUSTS UP TO 47 
  KNOTS. THE LARGEST EXPECTED SIGNIFICANT WAVES WILL BE 10 FEET 
  WITH A POTENTIAL MAXIMUM WAVE HEIGHT OF 14 FEET. 

* TIMING: THE MAXIMUM WINDS ARE EXPECTED AROUND 9 PM EST TUESDAY 
  WITH THE LARGEST WAVES EXPECTED AROUND 9 PM EST TUESDAY. 

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.

&&

$$

LHZ361-362-061500-
/O.CON.KDTX.GL.W.0039.000000T0000Z-171206T2100Z/
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-
948 PM EST TUE DEC 5 2017

...GALE WARNING REMAINS IN EFFECT UNTIL 4 PM EST WEDNESDAY...

* WIND AND WAVES: DURING THE GALE WARNING...EXPECT SUSTAINED 
  WINDS UP TO 34 KNOTS FROM THE SOUTHWEST WITH GUSTS UP TO 45 
  KNOTS. THE LARGEST EXPECTED SIGNIFICANT WAVES WILL BE 13 FEET 
  WITH A POTENTIAL MAXIMUM WAVE HEIGHT OF 19 FEET. 

* TIMING: THE MAXIMUM WINDS ARE EXPECTED AROUND 11 PM EST 
  TUESDAY WITH THE LARGEST WAVES EXPECTED AROUND 9 PM EST 
  TUESDAY. 

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.

&&

$$

LHZ442-443-463-464-061500-
/O.CON.KDTX.GL.W.0039.000000T0000Z-171206T2100Z/
HARBOR BEACH TO PORT SANILAC MI-PORT SANILAC TO PORT HURON MI-
LAKE HURON FROM HARBOR BEACH TO PORT SANILAC BEYOND 5NM OFF SHORE-
LAKE HURON FROM PORT SANILAC TO PORT HURON BEYOND 5NM OFF SHORE-
948 PM EST TUE DEC 5 2017

...GALE WARNING REMAINS IN EFFECT UNTIL 4 PM EST WEDNESDAY...

* WIND AND WAVES: DURING THE GALE WARNING...EXPECT SUSTAINED 
  WINDS UP TO 31 KNOTS FROM THE SOUTHWEST WITH GUSTS UP TO 39 
  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 11 PM EST 
  TUESDAY WITH THE LARGEST WAVES EXPECTED AROUND 9 PM EST 
  TUESDAY. 

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.

&&

$$

LHZ422-061500-
/O.CON.KDTX.GL.W.0039.000000T0000Z-171206T2100Z/
INNER SAGINAW BAY SW OF POINT AU GRES TO BAY PORT MI-
948 PM EST TUE DEC 5 2017

...GALE WARNING REMAINS IN EFFECT UNTIL 4 PM EST WEDNESDAY...

* WIND AND WAVES: DURING THE GALE WARNING...EXPECT SUSTAINED 
  WINDS UP TO 38 KNOTS FROM THE WEST WITH GUSTS UP TO 46 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 9 PM EST TUESDAY 
  WITH THE LARGEST WAVES EXPECTED AROUND 9 PM EST TUESDAY. 

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.

&&

$$

LEZ444-061500-
/O.CON.KDTX.LO.Y.0006.000000T0000Z-171206T0900Z/
/O.CON.KDTX.SC.Y.0089.000000T0000Z-171206T2100Z/
MICHIGAN WATERS OF LAKE ERIE FROM DETROIT RIVER TO NORTH CAPE MI-
948 PM EST TUE DEC 5 2017

...LOW WATER ADVISORY REMAINS IN EFFECT UNTIL 4 AM EST
WEDNESDAY...
...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 4 PM EST
WEDNESDAY...

* EXPECT WATER LEVELS TO DROP UP TO ONE FOOT BELOW THE CRITICAL 
  MARK FOR SAFE NAVIGATION IN THE WESTERN BASIN THROUGH THE FIRST 
  HALF OF TONIGHT BEFORE STARTING TO RISE. 

* WIND AND WAVES: DURING THE SMALL CRAFT ADVISORY...EXPECT 
  SUSTAINED WINDS UP TO 32 KNOTS FROM THE WEST WITH GUSTS UP TO 
  31 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 9 PM EST TUESDAY 
  WITH THE LARGEST WAVES EXPECTED AROUND 10 PM EST TUESDAY. 

REFER TO THE LATEST MARINE FORECASTS FOR GREATER DETAIL.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A LOW WATER ADVISORY MEANS WATER LEVELS ARE EXPECTED TO BE
SIGNIFICANTLY BELOW AVERAGE. MARINERS SHOULD USE EXTREME CAUTION
AND TRANSIT AT THE SLOWEST SAFE NAVIGABLE SPEED TO MINIMIZE
IMPACT.

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.

&&

$$

MR

316 
WHUS73 KDTX 060851
MWWDTX

URGENT - MARINE WEATHER MESSAGE
NATIONAL WEATHER SERVICE DETROIT/PONTIAC MI
351 AM EST WED DEC 6 2017

...GALES CONTINUE INTO THE AFTERNOON OVER LAKE HURON...

.GALE WARNINGS AND SMALL CRAFT ADVISORIES REMAIN IN EFFECT WITH NO 
CHANGE IN EXPIRATION AS WEAKENING TRENDS REMAIN INTACT IN THIS 
FORECAST CYCLE. A LARGE AND DEEP LOW PRESSURE SYSTEM NEAR JAMES BAY 
WILL MAINTAIN WESTERLY GALES ACROSS LAKE HURON TODAY. GUSTS IN THE 
40 TO 45 KNOT RANGE WILL BE WITHIN REACH FOR A FEW MORE HOURS DURING 
THE MORNING BEFORE SETTLING TOWARD THE 35 KNOT THRESHOLD BY 
AFTERNOON. THE LOW PRESSURE SYSTEM WILL MOVE SLOWLY ACROSS JAMES BAY 
DURING THE DAY WHILE FILLING STEADILY, WHICH WILL ALLOW GUSTS TO 
DROP TOWARD 30 KNOTS BY LATE AFTERNOON AND TONIGHT. ANOTHER FRONT 
WILL MOVE THROUGH OVERNIGHT AND THURSDAY AND BRING AN ADDITIONAL 
SURGE OF COLD AIR INTO THE REGION. IT WILL PRODUCE AN UPTICK IN SNOW 
SQUALLS OVER THE LAKE BUT WILL NOT BRING MUCH ADDITIONAL WIND 
IMPACT. A STRONGER LOW PRESSURE SYSTEM IS THEN DUE TO MOVE THROUGH 
THE CENTRAL GREAT LAKES DURING THE WEEKEND.

LHZ363-062100-
/O.CON.KDTX.GL.W.0040.000000T0000Z-171206T2100Z/
LAKE HURON FROM STURGEON POINT TO ALABASTER MI BEYOND 5NM OFF
SHORE-
351 AM EST WED DEC 6 2017

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

* WIND AND WAVES: DURING THE GALE WARNING...EXPECT SUSTAINED 
  WINDS UP TO 34 KNOTS FROM THE WEST WITH GUSTS UP TO 44 KNOTS. 
  THE LARGEST EXPECTED SIGNIFICANT WAVES WILL BE 13 FEET WITH A 
  POTENTIAL MAXIMUM WAVE HEIGHT OF 19 FEET. 

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

&&

$$

LHZ441-462-062100-
/O.CON.KDTX.GL.W.0040.000000T0000Z-171206T2100Z/
PORT AUSTIN TO HARBOR BEACH MI-
LAKE HURON FROM PORT AUSTIN TO HARBOR BEACH BEYOND 5NM OFF SHORE-
351 AM EST WED DEC 6 2017

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

* WIND AND WAVES: DURING THE GALE WARNING...EXPECT SUSTAINED 
  WINDS UP TO 33 KNOTS FROM THE WEST WITH GUSTS UP TO 42 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 3 AM EST 
  WEDNESDAY WITH THE LARGEST WAVES EXPECTED AROUND 3 AM EST 
  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.

&&

$$

LHZ421-062100-
/O.CON.KDTX.GL.W.0039.000000T0000Z-171206T2100Z/
OUTER SAGINAW BAY SW OF ALABASTER TO PORT AUSTIN MI TO INNER
SAGINAW BAY-
351 AM EST WED DEC 6 2017

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

* WIND AND WAVES: DURING THE GALE WARNING...EXPECT SUSTAINED 
  WINDS UP TO 34 KNOTS FROM THE WEST WITH GUSTS UP TO 42 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 
  WEDNESDAY WITH THE LARGEST WAVES EXPECTED AROUND 3 AM EST 
  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.

&&

$$

LHZ361-362-062100-
/O.CON.KDTX.GL.W.0039.000000T0000Z-171206T2100Z/
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-
351 AM EST WED DEC 6 2017

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

* WIND AND WAVES: DURING THE GALE WARNING...EXPECT SUSTAINED 
  WINDS UP TO 32 KNOTS FROM THE WEST 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 
  WEDNESDAY WITH THE LARGEST WAVES EXPECTED AROUND 3 AM EST 
  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.

&&

$$

LHZ442-443-463-464-062100-
/O.CON.KDTX.GL.W.0039.000000T0000Z-171206T2100Z/
HARBOR BEACH TO PORT SANILAC MI-PORT SANILAC TO PORT HURON MI-
LAKE HURON FROM HARBOR BEACH TO PORT SANILAC BEYOND 5NM OFF SHORE-
LAKE HURON FROM PORT SANILAC TO PORT HURON BEYOND 5NM OFF SHORE-
351 AM EST WED DEC 6 2017

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

* WIND AND WAVES: DURING THE GALE WARNING...EXPECT SUSTAINED 
  WINDS UP TO 31 KNOTS FROM THE WEST WITH GUSTS UP TO 39 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 EST 
  WEDNESDAY WITH THE LARGEST WAVES EXPECTED AROUND 8 AM EST 
  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.

&&

$$

LHZ422-062100-
/O.CON.KDTX.GL.W.0039.000000T0000Z-171206T2100Z/
INNER SAGINAW BAY SW OF POINT AU GRES TO BAY PORT MI-
351 AM EST WED DEC 6 2017

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

* WIND AND WAVES: DURING THE GALE WARNING...EXPECT SUSTAINED 
  WINDS UP TO 32 KNOTS FROM THE WEST WITH GUSTS UP TO 38 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 3 AM EST 
  WEDNESDAY WITH THE LARGEST WAVES EXPECTED AROUND 3 AM EST 
  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.

&&

$$

LEZ444-062100-
/O.EXT.KDTX.LO.Y.0006.000000T0000Z-171206T2100Z/
/O.CON.KDTX.SC.Y.0089.000000T0000Z-171206T2100Z/
MICHIGAN WATERS OF LAKE ERIE FROM DETROIT RIVER TO NORTH CAPE MI-
351 AM EST WED DEC 6 2017

...LOW WATER ADVISORY NOW IN EFFECT UNTIL 4 PM EST THIS
AFTERNOON...
...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 4 PM EST THIS
AFTERNOON...

THE LOW WATER ADVISORY IS NOW IN EFFECT UNTIL 4 PM EST THIS
AFTERNOON. 

* EXPECT WATER LEVELS TO DROP UP TO ONE FOOT BELOW THE CRITICAL
  MARK FOR SAFE NAVIGATION IN THE WESTERN BASIN THROUGH THIS
  MORNING BEFORE STARTING TO RISE THIS AFTERNOON.

* WIND AND WAVES: DURING THE SMALL CRAFT ADVISORY...EXPECT 
  SUSTAINED WINDS UP TO 26 KNOTS FROM THE WEST WITH GUSTS UP TO 
  30 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 AM EST 
  WEDNESDAY WITH THE LARGEST WAVES EXPECTED AROUND 7 AM EST 
  WEDNESDAY. 

REFER TO THE LATEST MARINE FORECASTS FOR GREATER DETAIL.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A LOW WATER ADVISORY MEANS WATER LEVELS ARE EXPECTED TO BE
SIGNIFICANTLY BELOW AVERAGE. MARINERS SHOULD USE EXTREME CAUTION
AND TRANSIT AT THE SLOWEST SAFE NAVIGABLE SPEED TO MINIMIZE
IMPACT.

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.

&&

$$

LCZ460-062100-
/O.CON.KDTX.SC.Y.0089.000000T0000Z-171206T2100Z/
LAKE ST CLAIR-
351 AM EST WED DEC 6 2017

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

* WIND AND WAVES: DURING THE SMALL CRAFT ADVISORY...EXPECT 
  SUSTAINED WINDS UP TO 25 KNOTS FROM THE SOUTHWEST WITH GUSTS 
  UP TO 31 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 AM EST 
  WEDNESDAY WITH THE LARGEST WAVES EXPECTED AROUND 7 AM EST 
  WEDNESDAY. 

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.

&&

$$

IRL

725 
WHUS73 KDTX 061528
MWWDTX

URGENT - MARINE WEATHER MESSAGE
NATIONAL WEATHER SERVICE DETROIT/PONTIAC MI
ISSUED BY NATIONAL WEATHER SERVICE GRAND RAPIDS MI
1028 AM EST WED DEC 6 2017

...GALES CONTINUE INTO THE AFTERNOON OVER LAKE HURON...

.GALE WARNINGS AND SMALL CRAFT ADVISORIES REMAIN IN EFFECT WITH NO 
CHANGE IN EXPIRATION AS WEAKENING TRENDS REMAIN INTACT IN THIS 
FORECAST CYCLE. A LARGE AND DEEP LOW PRESSURE SYSTEM NEAR JAMES BAY 
WILL MAINTAIN WESTERLY GALES ACROSS LAKE HURON TODAY. GUSTS IN THE 
40 TO 45 KNOT RANGE WILL BE WITHIN REACH FOR A FEW MORE HOURS DURING 
THE MORNING BEFORE SETTLING TOWARD THE 35 KNOT THRESHOLD BY 
AFTERNOON. THE LOW PRESSURE SYSTEM WILL MOVE SLOWLY ACROSS JAMES BAY 
DURING THE DAY WHILE FILLING STEADILY, WHICH WILL ALLOW GUSTS TO 
DROP TOWARD 30 KNOTS BY LATE AFTERNOON AND TONIGHT. ANOTHER FRONT 
WILL MOVE THROUGH OVERNIGHT AND THURSDAY AND BRING AN ADDITIONAL 
SURGE OF COLD AIR INTO THE REGION. IT WILL PRODUCE AN UPTICK IN SNOW 
SQUALLS OVER THE LAKE BUT WILL NOT BRING MUCH ADDITIONAL WIND 
IMPACT. A STRONGER LOW PRESSURE SYSTEM IS THEN DUE TO MOVE THROUGH 
THE CENTRAL GREAT LAKES DURING THE WEEKEND.

LEZ444-062100-
/O.CAN.KDTX.LO.Y.0006.000000T0000Z-171206T2100Z/
/O.CON.KDTX.SC.Y.0089.000000T0000Z-171206T2100Z/
MICHIGAN WATERS OF LAKE ERIE FROM DETROIT RIVER TO NORTH CAPE MI-
1028 AM EST WED DEC 6 2017

...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 4 PM EST THIS
AFTERNOON...
...LOW WATER ADVISORY IS CANCELLED...

THE NATIONAL WEATHER SERVICE IN DETROIT/PONTIAC HAS CANCELLED THE
LOW WATER ADVISORY. 

* WIND AND WAVES: DURING THE SMALL CRAFT ADVISORY...EXPECT 
  SUSTAINED WINDS UP TO 23 KNOTS FROM THE SOUTHWEST WITH GUSTS 
  UP TO 31 KNOTS. THE LARGEST EXPECTED SIGNIFICANT WAVES WILL 
  BE 4 FEET WITH A POTENTIAL MAXIMUM WAVE HEIGHT OF 5 FEET. 

* TIMING: THE MAXIMUM WINDS OCCURRED THIS MORNING AND WILL
  GRADUALLY DECREASE TODAY. 

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.

&&

$$

LHZ361-070330-
/O.CON.KDTX.GL.W.0039.000000T0000Z-171206T2100Z/
/O.NEW.KDTX.SC.Y.0090.171206T2100Z-171207T2200Z/
LAKE HURON FROM 5NM EAST OF MACKINAC BRIDGE TO PRESQUE ISLE LT
BEYOND 5 NM OFF SHORE-
1028 AM EST WED DEC 6 2017

...GALE WARNING REMAINS IN EFFECT UNTIL 4 PM EST THIS AFTERNOON...
...SMALL CRAFT ADVISORY IN EFFECT FROM 4 PM THIS AFTERNOON TO
5 PM EST THURSDAY...

THE NATIONAL WEATHER SERVICE IN DETROIT/PONTIAC HAS ISSUED A
SMALL CRAFT ADVISORY WHICH IS IN EFFECT FROM 4 PM THIS AFTERNOON
TO 5 PM EST THURSDAY. 

* WIND AND WAVES: DURING THE SMALL CRAFT ADVISORY...EXPECT 
  SUSTAINED WINDS UP TO 27 KNOTS FROM THE WEST WITH GUSTS UP TO 
  32 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 4 PM EST 
  WEDNESDAY WITH THE LARGEST WAVES EXPECTED AROUND 7 PM EST 
  WEDNESDAY. 

* WIND AND WAVES: DURING THE GALE WARNING...EXPECT SUSTAINED 
  WINDS UP TO 27 KNOTS FROM THE WEST WITH GUSTS UP TO 36 KNOTS. 
  THE LARGEST EXPECTED SIGNIFICANT WAVES WILL BE 9 FEET WITH A 
  POTENTIAL MAXIMUM WAVE HEIGHT OF 13 FEET. 

* TIMING: MAXIMUM WINDS THIS MORNING WILL GRADUALLY SUBSIDE WITH 
  THE LARGEST WAVES EXPECTED AROUND 3 PM EST 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
OCCURRING. 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.

&&

$$

LHZ363-441-462-062100-
/O.CON.KDTX.GL.W.0040.000000T0000Z-171206T2100Z/
LAKE HURON FROM STURGEON POINT TO ALABASTER MI BEYOND 5NM OFF
SHORE-PORT AUSTIN TO HARBOR BEACH MI-
LAKE HURON FROM PORT AUSTIN TO HARBOR BEACH BEYOND 5NM OFF SHORE-
1028 AM EST WED DEC 6 2017

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

* WIND AND WAVES: DURING THE GALE WARNING...EXPECT SUSTAINED 
  WINDS UP TO 32 KNOTS FROM THE SOUTHWEST WITH GUSTS UP TO 42 
  KNOTS. THE LARGEST EXPECTED SIGNIFICANT WAVES WILL BE 12 FEET 
  WITH A POTENTIAL MAXIMUM WAVE HEIGHT OF 17 FEET. 

* TIMING: MAXIMUM WINDS AND WAVES THIS MORNING WILL GRADUALLY
  SUBSIDE. 

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
OCCURRING. 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.

&&

$$

LHZ362-421-422-442-443-463-464-062100-
/O.CON.KDTX.GL.W.0039.000000T0000Z-171206T2100Z/
LAKE HURON FROM PRESQUE ISLE LIGHT TO STURGEON POINT 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-
HARBOR BEACH TO PORT SANILAC MI-PORT SANILAC TO PORT HURON MI-
LAKE HURON FROM HARBOR BEACH TO PORT SANILAC BEYOND 5NM OFF SHORE-
LAKE HURON FROM PORT SANILAC TO PORT HURON BEYOND 5NM OFF SHORE-
1028 AM EST WED DEC 6 2017

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

* WIND AND WAVES: DURING THE GALE WARNING...EXPECT SUSTAINED 
  WINDS UP TO 31 KNOTS FROM THE SOUTHWEST WITH GUSTS UP TO 41 
  KNOTS. THE LARGEST EXPECTED SIGNIFICANT WAVES WILL BE 11 FEET 
  WITH A POTENTIAL MAXIMUM WAVE HEIGHT OF 16 FEET. 

* TIMING: MAXIMUM WINDS AND WAVES THIS MORNING WILL GRADUALLY
  SUBSIDE. 

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
OCCURRING. 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.

&&

$$

LCZ460-062100-
/O.CON.KDTX.SC.Y.0089.000000T0000Z-171206T2100Z/
LAKE ST CLAIR-
1028 AM EST WED DEC 6 2017

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

* WIND AND WAVES: DURING THE SMALL CRAFT ADVISORY...EXPECT 
  SUSTAINED WINDS UP TO 24 KNOTS FROM THE SOUTHWEST 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: MAXIMUM WINDS AND WAVES THIS MORNING WILL GRADUALLY
  SUBSIDE.

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.

&&

$$

GUEST

920 
WHUS73 KDTX 062043
MWWDTX

URGENT - MARINE WEATHER MESSAGE
NATIONAL WEATHER SERVICE DETROIT/PONTIAC MI
343 PM EST WED DEC 6 2017

...WINDS AND WAVES GRADUALLY DECREASING...

.WIND GUSTS HAVE DROPPED BELOW GALE FORCE...ALTHOUGH A FEW GUSTS
AROUND 35 KNOTS WILL REMAIN POSSIBLE BEFORE 6 PM OVER SAGINAW BAY
AND THE OPEN WATERS. OTHERWISE...SMALL CRAFT ADVISORY CONDITIONS
ARE EXPECTED TO PERSIST ALONG THE STRAITS OF MACKINAC.

LHZ361-070845-
/O.CAN.KDTX.GL.W.0039.000000T0000Z-171206T2100Z/
/O.EXT.KDTX.SC.Y.0090.171206T2043Z-171207T2200Z/
LAKE HURON FROM 5NM EAST OF MACKINAC BRIDGE TO PRESQUE ISLE LT
BEYOND 5 NM OFF SHORE-
343 PM EST WED DEC 6 2017

...SMALL CRAFT ADVISORY NOW IN EFFECT UNTIL 5 PM EST THURSDAY...
...GALE WARNING IS CANCELLED...

THE NATIONAL WEATHER SERVICE IN DETROIT/PONTIAC HAS CANCELLED THE
GALE WARNING. THE SMALL CRAFT ADVISORY IS NOW IN EFFECT UNTIL
5 PM EST THURSDAY. 

* WIND AND WAVES: DURING THE SMALL CRAFT ADVISORY...EXPECT
  SUSTAINED WINDS UP TO 26 KNOTS FROM THE WEST WITH GUSTS TO 33
  KNOTS. THE LARGEST EXPECTED SIGNIFICANT WAVES WILL BE 9 FEET 
  WITH A POTENTIAL MAXIMUM WAVE HEIGHT OF 13 FEET. 

* TIMING: WINDS WILL GRADUALLY DECREASE. LARGEST WAVES EXPECTED 
  AROUND 7 PM EST WEDNESDAY. 

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.

&&

$$

LHZ363-441-462-062145-
/O.CAN.KDTX.GL.W.0040.000000T0000Z-171206T2100Z/
LAKE HURON FROM STURGEON POINT TO ALABASTER MI BEYOND 5NM OFF
SHORE-PORT AUSTIN TO HARBOR BEACH MI-
LAKE HURON FROM PORT AUSTIN TO HARBOR BEACH BEYOND 5NM OFF SHORE-
343 PM EST WED DEC 6 2017

...GALE WARNING IS CANCELLED...

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

$$

LHZ362-421-422-442-443-463-464-062145-
/O.CAN.KDTX.GL.W.0039.000000T0000Z-171206T2100Z/
LAKE HURON FROM PRESQUE ISLE LIGHT TO STURGEON POINT 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-
HARBOR BEACH TO PORT SANILAC MI-PORT SANILAC TO PORT HURON MI-
LAKE HURON FROM HARBOR BEACH TO PORT SANILAC BEYOND 5NM OFF SHORE-
LAKE HURON FROM PORT SANILAC TO PORT HURON BEYOND 5NM OFF SHORE-
343 PM EST WED DEC 6 2017

...GALE WARNING IS CANCELLED...

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

$$

LCZ460-LEZ444-062145-
/O.EXP.KDTX.SC.Y.0089.000000T0000Z-171206T2100Z/
LAKE ST CLAIR-
MICHIGAN WATERS OF LAKE ERIE FROM DETROIT RIVER TO NORTH CAPE MI-
343 PM EST WED DEC 6 2017

...SMALL CRAFT ADVISORY WILL EXPIRE AT 4 PM EST THIS AFTERNOON...

THE SMALL CRAFT ADVISORY WILL EXPIRE AT 4 PM EST THIS AFTERNOON. 

* WIND AND WAVES: WINDS OF 20 TO 25 KNOTS WITH GUSTS TO 30 KNOTS
  WILL CONTINUE TO SUBSIDE. WAVES WILL ALSO CONTINUE TO DIMINISH.

* TIMING: WINDS AND WAVES WILL CONTINUE TO DECREASE.

$$

GUEST

Area Forecast Discussion
National Weather Service Detroit/Pontiac MI
343 AM EST Tue Dec 5 2017

.DISCUSSION...

STRONG WINDS EXPECTED ACROSS MUCH OF SOUTHEAST MICHIGAN TODAY...

NEAR TERM / TODAY THROUGH TONIGHT

As of 340 AM EST...Powerful 982 hPa low pressure system currently
located near western Lake Superior will continue to move
northeastward into central Ontario, further rapidly deepening
throughout the day. Phasing of the northern and southern streams will
allow the low to deepen to sub 970 hPa, with the latest RAP pushing
965 hPa, a quite impressive transition season storm.

Across southeast Michigan, scattered showers continue ahead of an
approaching strong cold front, which will usher in winter-like
temperatures across the region today. Earlier model guidance
indicated a more robust line of showers with even a few embedded
storms, but this scenario has not materialized as a surge in the
cold front has displaced the bulk of the frontogenetical forcing
away from the immediate region. As a consequence, rainfall amounts
for most areas will actually only end up being a tenth of an inch or
less. The cold front is still progged to exit eastern Michigan
roughly 12z, with much drier air filtering in behind the front as
the system's dry slot moves overhead. Ahead of the front,
temperatures will spike into the mid 50s within the next few hours,
before beginning to plummet after daybreak with falling temperatures
throughout the day. By this evening, there will have been a 20-25
degree temperature swing in the span of roughly 12 hours as
temperatures plummet into the lower 30s. Behind the front, generally
dry weather is expected through at least early this evening.

The big weather story for today will be the strong winds before and
in the wake of the frontal passage. Ahead of the frontal passage,
south/southwesterly winds will commonly gust 30-40 mph, with gusts
exceeding 40 mph possible within showers that are able to tap higher
momentum air aloft. There will be 2 waves of strongest winds today.
The first will occur with the frontal passage itself early this
morning, where a surge in the frontal circulation noted by a kinked
isobaric map and frontal analysis will enhance the frontogenetical
density currents for a quick pop of near 40 mph gusts as winds shift
to the southwest.

A brief reduction in gusts will then be possible shortly after
daybreak due to the initial low capping inversion in the wake of the
front, but gusts of 25-30 mph will still be common due to the tight
gradient flow in place. By around noontime, the second surge in
gusts will begin and persist into the evening hours as strong CAA
and a drying boundary layer profile steepen low-level lapse rates to
nearly superadiabatic and rapidly destabilize the static stability
profile. Boundary layer momentum profile is quite impressive this
afternoon, with enhanced momentum transfer in a mixing depth profile
exceeding 5 kft in many places. This has already been verified by
upstream obs in Iowa/Wisconsin/Illinois frequently gusting 40+
knots. Coupled with the fact that the surface low will end up being
almost 10 hPa deeper than forecasts were indicating just 24 hours
ago, and an enhanced pressure rise field aided by left-exit region
ageostrophic circulation from a potent 160+ southern stream jet
streak moving by overhead, gusts exceeding 45 mph will be likely
today across much of southeast Michigan.

Based on these factors, have issued a Wind Advisory for all of
southeast Michigan excluding Lenawee and Monroe counties, although
these counties may need to be added later this morning after
watching trends in obs. While most gusts will be in the 40-45 mph
range, enough frequent gusts exceeding 45 mph warrant the advisory
issuance, and cannot rule out gusts as high as 55 mph at times in
the Saginaw Valley. Travel will be difficult throughout the day,
especially along north/south oriented highways where a significant
crosswind component will be in play. Unsecured loose outdoor objects
will easily blow around as well, along with possible downed tree
limbs and power lines resulting in sporadic power outages.

Gusts diminish below advisory levels shortly after sunset, but
continue to remain elevated around 25-35 mph. As the surface low
lifts further off to the northeast, the cyclonic flow in its wake
and much colder air moving over the mild lakes will provide the
spark for the onset of a lake effect snow regime. Abundant dry air
in the boundary layer should preclude most activity from affecting
southeast Michigan tonight, but enough saturation in the -10 to -15
C layer across central portions of the forecast area coupled with a
passing secondary shortwave in the cyclonic flow could lead to a
period of potential snow squalls this evening. Confidence is low on
this scenario panning out, but it is a nonzero probability that
should be monitored as the day progresses. If any squalls occur,
gusts easily exceeding 30 mph will be possible along with a quick
coating to a few tenths of snow. Low temperatures will bottom out in
the mid 20s with continued CAA.

SHORT/LONG TERM / WEDNESDAY THROUGH MONDAY

The weather pattern for the next several days will be dominated by a
lake effect snow regime, but southeast Michigan will struggle to see
much in the way of any significant activity, with more of a
southwesterly component in the boundary layer hindering activity
from a more favorable westerly flow regime. Still, periods of
flurries to scattered snow showers will be possible, with generally
little to no snow accumulation. Model guidance continues to hint at
a more substantial band affecting the southern two-thirds of the
area Thursday, but the bulk of accumulations will remain further
west.

Forecast gets a little more muddled heading into the weekend as
passing shortwaves reinforce longwave troughing over the eastern
half of the CONUS, with the potential for a few clipper systems to
affect the region with some light snow. Cold temperatures will
persist through the weekend, with highs in the 20s and 30s. Lows
will generally be in the 20s each night.

&&

.MARINE...

Gale warnings remain in effect for all Lake Huron marine areas and
upgraded to storm warning for outer Saginaw Bay and central Lake
Huron. Lake St Clair is upgraded to a gale warning and western Lake
Erie remains at small craft advisory for now. The westerly gales and
gusts to storm force on Lake Huron will be due to a large and strong
low pressure system moving from Lake Superior into northern Ontario
while deepening to 970 mb. Multiple observations during the night
indicated gusts in the upper 40 kt range over southern WI, IA,
northern IL while the system was around 982 mb, and considering the
deepening trend during the rest of the day, an upgrade to storm
warning is warranted for outer Saginaw Bay and central Lake Huron.
Peak gusts in that area will be very close to 50 knots on southwest
direction funneling through Saginaw Bay and into the open waters of
the lake. Wind conditions will drop off from the peak later tonight
but 35-40 knot gales will then continue through Wednesday. Colder
air moving into the region will also promote increasing coverage of
lake effect snow squalls to further hinder marine conditions through
the end of the week.

&&

.PREV DISCUSSION...
Issued at 1144 PM EST Mon Dec 4 2017

AVIATION...

Band of showers will work through area in the 06z-11z time frame in
advance and along cold front. KMBS/KFNT will start out with showers
at 06z with activity moving into KDTW/KDET between 07z-08z. Embedded
thunderstorm remains a possibility, but mainly for KMBS given recent
radar/lightning trends. Strong surge of winds noted along/behind
from near mid Mississippi valley should sweep through terminals late
tonight with gusts in excess of 35 knots and perhaps to 40 knots
(especially KMBS). Gusty SW winds continue through Tuesday and to a
degree Tuesday night. Cigs, however, will rise from MVFR along and
behind front to lower vfr Tuesday to scatter clouds by the end of
the forecast period (mainly KPTK south).

For DTW...Cigs will be below 5kft with showers working into terminal
near 07z. Still an outside shot at brief thunder, but Hires models
this evening suggest current activity, which is already lacking CGs,
will weaken further overnight. SW winds will gust to 35+ knots in
behind the cold front and persist more or less into late afternoon
to early evening Tuesday.

//DTW THRESHOLD PROBABILITIES...

* High for cigs aob 5kft overnight, medium on Tuesday.

* Low for thunderstorms impacting terminal 07z-09z.

&&

.DTX WATCHES/WARNINGS/ADVISORIES...
MI...NONE.
Lake Huron...Gale Warning until 4 PM EST Wednesday for LHZ363-462-463.

     Gale Warning until 10 AM EST Wednesday for LHZ361-362-441>443-464.

     Gale Warning until 7 AM EST Wednesday for LHZ421-422.

Lake St Clair...Small Craft Advisory until 4 AM EST Wednesday for LCZ460.

Michigan waters of Lake Erie...Small Craft Advisory until 4 AM EST Wednesday for LEZ444.

&&

DISCUSSION...IRL
MARINE.......BT
AVIATION.....DG

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

Hazardous Weather Outlook
National Weather Service Detroit/Pontiac MI
1052 AM EST Mon Dec 4 2017

MIZ047>049-053>055-060>063-068>070-075-076-082-083-051600-
Midland-Bay-Huron-Saginaw-Tuscola-Sanilac-Shiawassee-Genesee-Lapeer-
St. Clair-Livingston-Oakland-Macomb-Washtenaw-Wayne-Lenawee-Monroe-
1052 AM EST Mon Dec 4 2017

This hazardous weather outlook is for portions of southeast
Michigan.

.DAY ONE...Today and Tonight

A strong cold front will bring a narrow window for wind gusts to
reach or slightly exceed 40 mph after 4am tonight.

There is a slight chance of thunderstorms tonight.

.DAYS TWO THROUGH SEVEN...Tuesday through Sunday

A strong cold front will bring a narrow window for wind gusts to
reach or slightly exceed 40 mph mainly before 8am Tuesday.

Wind gusts may approach 40 mph again on Tuesday afternoon.

.SPOTTER INFORMATION STATEMENT...

Spotter activation will not be needed today and tonight.

LCZ460-LEZ444-LHZ361>363-421-422-441>443-462>464-051600-
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-
1052 AM EST Mon Dec 4 2017

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

.DAY ONE...Today and Tonight

Gale warnings and small craft advisories are in effect. See the
forecast for detail.

There is a slight chance of thunderstorms tonight.

.DAYS TWO THROUGH SEVEN...Tuesday through Sunday

Gale warnings and small craft advisories 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.

Special Weather Statement
National Weather Service Detroit/Pontiac MI
1202 AM EST Tue Dec 5 2017

MIZ047>049-053>055-060>063-068>070-075-076-082-083-050900-
Midland-Bay-Huron-Saginaw-Tuscola-Sanilac-Shiawassee-Genesee-
Lapeer-St. Clair-Livingston-Oakland-Macomb-Washtenaw-Wayne-
Lenawee-Monroe-
Including the cities of Midland, Bay City, Bad Axe, Saginaw,
Caro, Sandusky, Owosso, Flint, Lapeer, Port Huron, Howell,
Pontiac, Warren, Ann Arbor, Detroit, Adrian, and Monroe
1202 AM EST Tue Dec 5 2017

...STRONG WINDS ACCOMPANYING COLD FRONTAL PASSAGE TONIGHT...

South to southwest winds will continue to strengthen ahead of an
approaching cold front. Wind gusts of 30-40 mph will be common
through the night. A line of showers with a few embedded
thunderstorms will precede the frontal passage, with a brief
period of 40-50 mph wind gusts possible in the strongest activity.
Timing of these strongest winds will be between midnight and 4 AM.

Behind the cold front, winds will shift to the west southwest and
continue to remain strong with frequent gusts likely exceeding 40
mph, especially during the afternoon hours.

Travel may become difficult at times tonight and continuing
through the day Tuesday, especially for high profile vehicles.
Lighter, unsecure outdoor items may easily blow around as well.

IRL