Gale Warning 43, NWS Detroit, MI

558 
WHUS73 KDTX 182103
MWWDTX

URGENT - MARINE WEATHER MESSAGE
NATIONAL WEATHER SERVICE DETROIT/PONTIAC MI
403 PM EST MON DEC 18 2017

...GALES TONIGHT THROUGH TUESDAY NIGHT...

.STRONG LOW PRESSURE TRACKING THROUGH JAMES BAY TONIGHT WILL DRIVE A 
COLD FRONT THROUGH THE CENTRAL GREAT LAKES TOMORROW. DEEPER MIXING 
CAUSED BY THE COLD ADVECTION WILL SUPPORT WESTERLY GALES OVER MOST 
OF LAKE HURON, INTO TUESDAY NIGHT. NORTHWEST WINDS ON WEDNESDAY WILL 
THEN GRADUALLY DIMINISH AS HIGH PRESSURE RETURNS TO THE REGION. 
LIGHTER WINDS ON THURSDAY LOOK TO BE SHORT LIVED, AS A STRONG LOW IS 
FORECAST TO TRACK THROUGH THE WESTERN/CENTRAL GREAT LAKES REGION 
DURING THE FRIDAY-SATURDAY TIME PERIOD, SUPPORTING POSSIBLE GALES 
AND HEAVY FREEZING SPRAY OVER THE WEEKEND.

LHZ361-190930-
/O.CON.KDTX.GL.W.0043.171219T0900Z-171220T0900Z/
LAKE HURON FROM 5NM EAST OF MACKINAC BRIDGE TO PRESQUE ISLE LT
BEYOND 5 NM OFF SHORE-
403 PM EST MON DEC 18 2017

...GALE WARNING REMAINS IN EFFECT FROM 4 AM TUESDAY TO 4 AM EST
WEDNESDAY...

* WIND AND WAVES: DURING THE GALE WARNING...EXPECT SUSTAINED 
  WINDS UP TO 31 KNOTS FROM THE WEST WITH GUSTS UP TO 40 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 10 PM EST TUESDAY
  WITH THE LARGEST WAVES EXPECTED AROUND 1 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.

&&

$$

LHZ421-441-190930-
/O.CON.KDTX.GL.W.0043.171219T0500Z-171219T2100Z/
OUTER SAGINAW BAY SW OF ALABASTER TO PORT AUSTIN MI TO INNER
SAGINAW BAY-PORT AUSTIN TO HARBOR BEACH MI-
403 PM EST MON DEC 18 2017

...GALE WARNING REMAINS IN EFFECT FROM MIDNIGHT TONIGHT TO 4 PM
EST TUESDAY...

* WIND AND WAVES: DURING THE GALE WARNING...EXPECT SUSTAINED WINDS
  UP TO 26 KNOTS FROM THE SOUTHWEST WITH GUSTS UP TO 35 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 4 AM EST TUESDAY
  WITH THE LARGEST WAVES EXPECTED AROUND 6 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.

&&

$$

LHZ362-363-462-190930-
/O.CON.KDTX.GL.W.0043.171219T0500Z-171220T0900Z/
LAKE HURON FROM PRESQUE ISLE LIGHT TO STURGEON POINT MI BEYOND
5NM OFF SHORE-
LAKE HURON FROM STURGEON POINT TO ALABASTER MI BEYOND 5NM OFF
SHORE-
LAKE HURON FROM PORT AUSTIN TO HARBOR BEACH BEYOND 5NM OFF SHORE-
403 PM EST MON DEC 18 2017

...GALE WARNING REMAINS IN EFFECT FROM MIDNIGHT TONIGHT TO 4 AM
EST WEDNESDAY...

* 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 10 PM EST 
  TUESDAY WITH THE LARGEST WAVES EXPECTED AROUND 12 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.

&&

$$

LHZ422-190930-
/O.NEW.KDTX.SC.Y.0098.171219T0500Z-171219T2100Z/
INNER SAGINAW BAY SW OF POINT AU GRES TO BAY PORT MI-
403 PM EST MON DEC 18 2017

...SMALL CRAFT ADVISORY IN EFFECT FROM MIDNIGHT TONIGHT TO 4 PM
EST TUESDAY...

THE NATIONAL WEATHER SERVICE IN DETROIT/PONTIAC HAS ISSUED A
SMALL CRAFT ADVISORY WHICH IS IN EFFECT FROM MIDNIGHT TONIGHT TO
4 PM EST TUESDAY. 

* WIND: DURING THE SMALL CRAFT ADVISORY...EXPECT SUSTAINED WINDS 
  UP TO 21 KNOTS FROM THE SOUTHWEST WITH GUSTS UP TO 30 KNOTS. 

* TIMING: THE MAXIMUM WINDS ARE EXPECTED AROUND 4 AM EST TUESDAY.

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.

&&

$$

LHZ442-190930-
/O.NEW.KDTX.SC.Y.0098.171219T0500Z-171220T0900Z/
HARBOR BEACH TO PORT SANILAC MI-
403 PM EST MON DEC 18 2017

...SMALL CRAFT ADVISORY IN EFFECT FROM MIDNIGHT TONIGHT TO 4 AM
EST WEDNESDAY...

THE NATIONAL WEATHER SERVICE IN DETROIT/PONTIAC HAS ISSUED A
SMALL CRAFT ADVISORY WHICH IS IN EFFECT FROM MIDNIGHT TONIGHT TO
4 AM EST WEDNESDAY. 

* WIND AND WAVES: DURING THE SMALL CRAFT ADVISORY...EXPECT
  SUSTAINED WINDS UP TO 22 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 5 FEET. 

* TIMING: THE MAXIMUM WINDS ARE EXPECTED AROUND 7 AM EST TUESDAY 
  WITH THE LARGEST WAVES EXPECTED AROUND 10 AM EST TUESDAY. 

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.

&&

$$

BT

416 
WHUS73 KDTX 190857
MWWDTX

URGENT - MARINE WEATHER MESSAGE
NATIONAL WEATHER SERVICE DETROIT/PONTIAC MI
357 AM EST TUE DEC 19 2017

...GALES CONTINUE THROUGH TONIGHT...

.COLD FRONT ON TRACK TO SWEEP ACROSS THE CENTRAL GREAT LAKES TODAY. 
DEEPER MIXING RESULTING FROM THE COLD ADVECTION WILL SUPPORT 
WESTERLY GALES OVER MOST OF LAKE HURON THROUGH TONIGHT. NORTHWEST 
WINDS ON WEDNESDAY WILL THEN GRADUALLY DIMINISH AS HIGH PRESSURE 
RETURNS TO THE REGION. LIGHTER WINDS ON THURSDAY LOOK TO BE SHORT 
LIVED, AS A STRONG LOW IS FORECAST TO TRACK THROUGH GREAT LAKES 
REGION DURING THE FRIDAY-SATURDAY TIME PERIOD. THIS MAY BRING 
ANOTHER PERIOD OF GALES, ALONG WITH HEAVY FREEZING SPRAY THIS 
WEEKEND.

LHZ361-192130-
/O.CON.KDTX.GL.W.0043.171219T0900Z-171220T0900Z/
LAKE HURON FROM 5NM EAST OF MACKINAC BRIDGE TO PRESQUE ISLE LT
BEYOND 5 NM OFF SHORE-
357 AM EST TUE DEC 19 2017

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

* WIND AND WAVES: DURING THE GALE WARNING...EXPECT SUSTAINED 
  WINDS UP TO 31 KNOTS FROM THE WEST WITH GUSTS UP TO 40 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 10 PM EST 
  TUESDAY WITH THE LARGEST WAVES EXPECTED AROUND 11 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.

&&

$$

LHZ421-441-192100-
/O.CON.KDTX.GL.W.0043.000000T0000Z-171219T2100Z/
OUTER SAGINAW BAY SW OF ALABASTER TO PORT AUSTIN MI TO INNER
SAGINAW BAY-PORT AUSTIN TO HARBOR BEACH MI-
357 AM EST TUE DEC 19 2017

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

* WIND AND WAVES: DURING THE GALE WARNING...EXPECT SUSTAINED 
  WINDS UP TO 26 KNOTS FROM THE SOUTHWEST WITH GUSTS UP TO 34 
  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 4 AM EST TUESDAY 
  WITH THE LARGEST WAVES EXPECTED AROUND 5 AM EST TUESDAY. 

REFER TO THE LATEST MARINE FORECASTS FOR GREATER DETAIL.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A GALE 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.

&&

$$

LHZ362-363-462-192130-
/O.CON.KDTX.GL.W.0043.000000T0000Z-171220T0900Z/
LAKE HURON FROM PRESQUE ISLE LIGHT TO STURGEON POINT MI BEYOND
5NM OFF SHORE-
LAKE HURON FROM STURGEON POINT TO ALABASTER MI BEYOND 5NM OFF
SHORE-
LAKE HURON FROM PORT AUSTIN TO HARBOR BEACH BEYOND 5NM OFF SHORE-
357 AM EST TUE DEC 19 2017

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

* 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 10 PM EST 
  TUESDAY WITH THE LARGEST WAVES EXPECTED AROUND 12 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.

&&

$$

LHZ422-192100-
/O.CON.KDTX.SC.Y.0098.000000T0000Z-171219T2100Z/
INNER SAGINAW BAY SW OF POINT AU GRES TO BAY PORT MI-
357 AM EST TUE DEC 19 2017

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

* WIND: DURING THE SMALL CRAFT ADVISORY...EXPECT SUSTAINED WINDS 
  UP TO 21 KNOTS FROM THE SOUTHWEST WITH GUSTS UP TO 30 KNOTS. 

* TIMING: THE MAXIMUM WINDS ARE EXPECTED AROUND 4 AM EST TUESDAY.

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.

&&

$$

LHZ442-192130-
/O.CON.KDTX.SC.Y.0098.000000T0000Z-171220T0900Z/
HARBOR BEACH TO PORT SANILAC MI-
357 AM EST TUE DEC 19 2017

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

* WIND AND WAVES: DURING THE SMALL CRAFT ADVISORY...EXPECT 
  SUSTAINED WINDS UP TO 22 KNOTS FROM THE SOUTHWEST 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 7 AM EST TUESDAY 
  WITH THE LARGEST WAVES EXPECTED AROUND 3 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.

&&

$$

DRK

388 
WHUS73 KDTX 191442
MWWDTX

URGENT - MARINE WEATHER MESSAGE
NATIONAL WEATHER SERVICE DETROIT/PONTIAC MI
942 AM EST TUE DEC 19 2017

...NORTHWEST GALES TODAY INTO TONIGHT...

.COLD FRONT ON TRACK TO SWEEP ACROSS THE CENTRAL GREAT LAKES TODAY. 
DEEPER MIXING RESULTING FROM THE COLD ADVECTION WILL SUPPORT 
WESTERLY GALES OVER MOST OF LAKE HURON THROUGH TONIGHT. NORTHWEST 
WINDS ON WEDNESDAY WILL THEN GRADUALLY DIMINISH AS HIGH PRESSURE 
RETURNS TO THE REGION. LIGHTER WINDS ON THURSDAY LOOK TO BE SHORT 
LIVED, AS A STRONG LOW IS FORECAST TO TRACK THROUGH GREAT LAKES 
REGION DURING THE FRIDAY-SATURDAY TIME PERIOD. THIS MAY BRING 
ANOTHER PERIOD OF GALES, ALONG WITH HEAVY FREEZING SPRAY THIS 
WEEKEND.

LHZ422-191545-
/O.CAN.KDTX.SC.Y.0098.000000T0000Z-171219T2100Z/
INNER SAGINAW BAY SW OF POINT AU GRES TO BAY PORT MI-
942 AM EST TUE DEC 19 2017

...SMALL CRAFT ADVISORY IS CANCELLED...

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

$$

LHZ463-200900-
/O.EXB.KDTX.GL.W.0043.171219T2100Z-171220T0900Z/
LAKE HURON FROM HARBOR BEACH TO PORT SANILAC BEYOND 5NM OFF SHORE-
942 AM EST TUE DEC 19 2017

...GALE WARNING IN EFFECT FROM 4 PM THIS AFTERNOON TO 4 AM EST
WEDNESDAY...

THE NATIONAL WEATHER SERVICE IN DETROIT/PONTIAC HAS ISSUED A GALE
WARNING WHICH IS IN EFFECT FROM 4 PM THIS AFTERNOON TO 4 AM EST
WEDNESDAY. 

* WIND AND WAVES: DURING THE GALE WARNING...EXPECT SUSTAINED 
  WINDS UP TO 29 KNOTS FROM THE WEST WITH GUSTS UP TO 35 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 11 PM EST 
  TUESDAY 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.

&&

$$

LHZ361-200900-
/O.CON.KDTX.GL.W.0043.000000T0000Z-171220T0900Z/
LAKE HURON FROM 5NM EAST OF MACKINAC BRIDGE TO PRESQUE ISLE LT
BEYOND 5 NM OFF SHORE-
942 AM EST TUE DEC 19 2017

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

* 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 10 FEET WITH A 
  POTENTIAL MAXIMUM WAVE HEIGHT OF 14 FEET. 

* TIMING: THE MAXIMUM WINDS ARE EXPECTED AROUND 10 PM EST 
  TUESDAY WITH THE LARGEST WAVES EXPECTED AROUND 11 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.

&&

$$

LHZ421-441-192100-
/O.CON.KDTX.GL.W.0043.000000T0000Z-171219T2100Z/
OUTER SAGINAW BAY SW OF ALABASTER TO PORT AUSTIN MI TO INNER
SAGINAW BAY-PORT AUSTIN TO HARBOR BEACH MI-
942 AM EST TUE DEC 19 2017

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

* WIND AND WAVES: DURING THE GALE WARNING...EXPECT SUSTAINED 
  WINDS UP TO 23 KNOTS FROM THE SOUTHWEST WITH GUSTS UP TO 30 
  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 9 AM EST TUESDAY 
  WITH THE LARGEST WAVES EXPECTED AROUND 10 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.

&&

$$

LHZ362-363-462-200900-
/O.CON.KDTX.GL.W.0043.000000T0000Z-171220T0900Z/
LAKE HURON FROM PRESQUE ISLE LIGHT TO STURGEON POINT MI BEYOND
5NM OFF SHORE-
LAKE HURON FROM STURGEON POINT TO ALABASTER MI BEYOND 5NM OFF
SHORE-
LAKE HURON FROM PORT AUSTIN TO HARBOR BEACH BEYOND 5NM OFF SHORE-
942 AM EST TUE DEC 19 2017

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

* WIND AND WAVES: DURING THE GALE WARNING...EXPECT SUSTAINED 
  WINDS UP TO 35 KNOTS FROM THE NORTHWEST WITH GUSTS UP TO 43 
  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 12 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.

&&

$$

LHZ442-200900-
/O.CON.KDTX.SC.Y.0098.000000T0000Z-171220T0900Z/
HARBOR BEACH TO PORT SANILAC MI-
942 AM EST TUE DEC 19 2017

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

* WIND AND WAVES: DURING THE SMALL CRAFT ADVISORY...EXPECT 
  SUSTAINED WINDS UP TO 25 KNOTS FROM THE NORTHWEST 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 12 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 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

211 
WHUS73 KDTX 192015
MWWDTX

URGENT - MARINE WEATHER MESSAGE
NATIONAL WEATHER SERVICE DETROIT/PONTIAC MI
315 PM EST TUE DEC 19 2017

...NORTHWEST GALES TONIGHT...

.COLDER AIR STREAMING INTO THE CENTRAL GREAT LAKES THIS AFTERNOON AND 
EVENING WILL SUPPORT AN UPTICK IN THE WINDS OVER MUCH OF LAKE HURON, 
AND WIND GUSTS IN THE 35 TO 40 KNOT RANGE REMAIN ON TARGET TONIGHT. 
NORTHWEST WINDS ON WEDNESDAY WILL THEN GRADUALLY DIMINISH AS HIGH 
PRESSURE RETURNS TO THE REGION. LIGHTER WINDS ON THURSDAY LOOK TO BE 
SHORT LIVED, AS A STRONG LOW IS FORECAST TO TRACK THROUGH GREAT 
LAKES REGION DURING THE FRIDAY-SATURDAY TIME PERIOD. THIS MAY BRING 
ANOTHER PERIOD OF GALES, ALONG WITH HEAVY FREEZING SPRAY THIS 
WEEKEND.

LHZ421-200815-
/O.CAN.KDTX.GL.W.0043.000000T0000Z-171219T2100Z/
/O.EXB.KDTX.SC.Y.0098.000000T0000Z-171220T1500Z/
OUTER SAGINAW BAY SW OF ALABASTER TO PORT AUSTIN MI TO INNER
SAGINAW BAY-
315 PM EST TUE DEC 19 2017

...SMALL CRAFT ADVISORY IN EFFECT UNTIL 10 AM EST WEDNESDAY...
...GALE WARNING IS CANCELLED...

THE NATIONAL WEATHER SERVICE IN DETROIT/PONTIAC HAS ISSUED A
SMALL CRAFT ADVISORY WHICH IS IN EFFECT UNTIL 10 AM EST
WEDNESDAY. 

* WIND AND WAVES: DURING THE SMALL CRAFT ADVISORY...EXPECT 
  SUSTAINED WINDS UP TO 26 KNOTS FROM THE WEST WITH GUSTS UP TO 
  31 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 11 PM EST 
  TUESDAY WITH THE LARGEST WAVES EXPECTED AROUND 1 AM EST 
  WEDNESDAY. 

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.

&&

$$

LHZ441-200300-
/O.EXT.KDTX.GL.W.0043.000000T0000Z-171220T0300Z/
PORT AUSTIN TO HARBOR BEACH MI-
315 PM EST TUE DEC 19 2017

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

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

* WIND AND WAVES: DURING THE GALE WARNING...EXPECT SUSTAINED 
  WINDS UP TO 26 KNOTS FROM THE WEST WITH GUSTS UP TO 33 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.

&&

$$

LHZ463-200815-
/O.CON.KDTX.GL.W.0043.171219T2100Z-171220T0900Z/
LAKE HURON FROM HARBOR BEACH TO PORT SANILAC BEYOND 5NM OFF SHORE-
315 PM EST TUE DEC 19 2017

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

* WIND AND WAVES: DURING THE GALE WARNING...EXPECT SUSTAINED 
  WINDS UP TO 28 KNOTS FROM THE WEST WITH GUSTS UP TO 34 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 10 PM EST 
  TUESDAY 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.

&&

$$

LHZ361-200815-
/O.CON.KDTX.GL.W.0043.000000T0000Z-171220T0900Z/
LAKE HURON FROM 5NM EAST OF MACKINAC BRIDGE TO PRESQUE ISLE LT
BEYOND 5 NM OFF SHORE-
315 PM EST TUE DEC 19 2017

...GALE WARNING REMAINS IN EFFECT UNTIL 4 AM 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 11 FEET WITH A 
  POTENTIAL MAXIMUM WAVE HEIGHT OF 16 FEET. 

* TIMING: THE MAXIMUM WINDS ARE EXPECTED AROUND 10 PM EST 
  TUESDAY WITH THE LARGEST WAVES EXPECTED AROUND 11 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.

&&

$$

LHZ362-363-462-200815-
/O.CON.KDTX.GL.W.0043.000000T0000Z-171220T0900Z/
LAKE HURON FROM PRESQUE ISLE LIGHT TO STURGEON POINT MI BEYOND
5NM OFF SHORE-
LAKE HURON FROM STURGEON POINT TO ALABASTER MI BEYOND 5NM OFF
SHORE-
LAKE HURON FROM PORT AUSTIN TO HARBOR BEACH BEYOND 5NM OFF SHORE-
315 PM EST TUE DEC 19 2017

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

* WIND AND WAVES: DURING THE GALE WARNING...EXPECT SUSTAINED 
  WINDS UP TO 34 KNOTS FROM THE NORTHWEST WITH GUSTS UP TO 42 
  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 10 PM EST 
  TUESDAY WITH THE LARGEST WAVES EXPECTED AROUND 12 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.

&&

$$

LHZ442-200815-
/O.EXT.KDTX.SC.Y.0098.000000T0000Z-171220T2100Z/
HARBOR BEACH TO PORT SANILAC MI-
315 PM EST TUE DEC 19 2017

...SMALL CRAFT ADVISORY NOW IN EFFECT UNTIL 4 PM EST WEDNESDAY...

THE SMALL CRAFT ADVISORY IS NOW IN EFFECT UNTIL 4 PM EST
WEDNESDAY. 

* WIND AND WAVES: DURING THE SMALL CRAFT ADVISORY...EXPECT 
  SUSTAINED WINDS UP TO 25 KNOTS FROM THE NORTHWEST WITH GUSTS 
  UP TO 31 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 12 AM EST 
  WEDNESDAY WITH THE LARGEST WAVES EXPECTED AROUND 4 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.

&&

$$

JVC

268 
WHUS73 KDTX 200239
MWWDTX

URGENT - MARINE WEATHER MESSAGE
NATIONAL WEATHER SERVICE DETROIT/PONTIAC MI
939 PM EST TUE DEC 19 2017

...GALES CONTINUE...

.COLDER AIR STREAMING INTO THE CENTRAL GREAT LAKES THIS EVENING 
WILL SUPPORT AN UPTICK IN THE WINDS OVER MUCH OF LAKE HURON, AND 
WIND GUSTS IN THE 35 TO 40 KNOT RANGE REMAIN ON TARGET TONIGHT. 
NORTHWEST WINDS ON WEDNESDAY WILL THEN GRADUALLY DIMINISH AS HIGH 
PRESSURE RETURNS TO THE REGION. LIGHTER WINDS ON THURSDAY LOOK TO 
BE SHORT LIVED, AS A STRONG LOW IS FORECAST TO TRACK THROUGH GREAT
LAKES REGION DURING THE FRIDAY-SATURDAY TIME PERIOD. THIS MAY 
BRING ANOTHER PERIOD OF GALES, ALONG WITH HEAVY FREEZING SPRAY 
THIS WEEKEND.

LHZ441-201530-
/O.EXP.KDTX.GL.W.0043.000000T0000Z-171220T0300Z/
/O.EXB.KDTX.SC.Y.0098.171220T0300Z-171220T2100Z/
PORT AUSTIN TO HARBOR BEACH MI-
939 PM EST TUE DEC 19 2017

...SMALL CRAFT ADVISORY IN EFFECT UNTIL 4 PM EST WEDNESDAY...
...GALE WARNING WILL EXPIRE AT 10 PM EST THIS EVENING...

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 27 KNOTS FROM THE WEST WITH GUSTS UP TO 32 
  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 10 PM EST 
  TUESDAY WITH THE LARGEST WAVES EXPECTED AROUND 2 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.

&&

$$

LHZ463-200900-
/O.CON.KDTX.GL.W.0043.000000T0000Z-171220T0900Z/
LAKE HURON FROM HARBOR BEACH TO PORT SANILAC BEYOND 5NM OFF SHORE-
939 PM EST TUE DEC 19 2017

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

* WIND AND WAVES: DURING THE GALE WARNING...EXPECT SUSTAINED 
  WINDS UP TO 28 KNOTS FROM THE WEST WITH GUSTS UP TO 34 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 10 PM EST 
  TUESDAY 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.

&&

$$

LHZ361-200900-
/O.CON.KDTX.GL.W.0043.000000T0000Z-171220T0900Z/
LAKE HURON FROM 5NM EAST OF MACKINAC BRIDGE TO PRESQUE ISLE LT
BEYOND 5 NM OFF SHORE-
939 PM EST TUE DEC 19 2017

...GALE WARNING REMAINS IN EFFECT UNTIL 4 AM 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 11 FEET WITH A 
  POTENTIAL MAXIMUM WAVE HEIGHT OF 16 FEET. 

* TIMING: THE MAXIMUM WINDS ARE EXPECTED AROUND 10 PM EST 
  TUESDAY WITH THE LARGEST WAVES EXPECTED AROUND 11 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.

&&

$$

LHZ362-363-462-200900-
/O.CON.KDTX.GL.W.0043.000000T0000Z-171220T0900Z/
LAKE HURON FROM PRESQUE ISLE LIGHT TO STURGEON POINT MI BEYOND
5NM OFF SHORE-
LAKE HURON FROM STURGEON POINT TO ALABASTER MI BEYOND 5NM OFF
SHORE-
LAKE HURON FROM PORT AUSTIN TO HARBOR BEACH BEYOND 5NM OFF SHORE-
939 PM EST TUE DEC 19 2017

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

* WIND AND WAVES: DURING THE GALE WARNING...EXPECT SUSTAINED 
  WINDS UP TO 34 KNOTS FROM THE NORTHWEST WITH GUSTS UP TO 42 
  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 10 PM EST 
  TUESDAY WITH THE LARGEST WAVES EXPECTED AROUND 12 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.

&&

$$

LHZ421-201500-
/O.CON.KDTX.SC.Y.0098.000000T0000Z-171220T1500Z/
OUTER SAGINAW BAY SW OF ALABASTER TO PORT AUSTIN MI TO INNER
SAGINAW BAY-
939 PM EST TUE DEC 19 2017

...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 10 AM EST
WEDNESDAY...

* WIND AND WAVES: DURING THE SMALL CRAFT ADVISORY...EXPECT 
  SUSTAINED WINDS UP TO 26 KNOTS FROM THE WEST WITH GUSTS UP TO 
  31 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 11 PM EST 
  TUESDAY WITH THE LARGEST WAVES EXPECTED AROUND 1 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.

&&

$$

LHZ442-201530-
/O.CON.KDTX.SC.Y.0098.000000T0000Z-171220T2100Z/
HARBOR BEACH TO PORT SANILAC MI-
939 PM EST TUE DEC 19 2017

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

* WIND AND WAVES: DURING THE SMALL CRAFT ADVISORY...EXPECT 
  SUSTAINED WINDS UP TO 25 KNOTS FROM THE NORTHWEST WITH GUSTS 
  UP TO 31 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 12 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 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.

&&

$$

MANN

004 
WHUS73 KDTX 200854
MWWDTX

URGENT - MARINE WEATHER MESSAGE
NATIONAL WEATHER SERVICE DETROIT/PONTIAC MI
354 AM EST WED DEC 20 2017

...WAVES REMAIN ELEVATED ALONG THE LAKE HURON SHORELINE...

.GRADUALLY DIMINISHING TREND TO THE EXISTING NORTHWEST WIND TODAY AS 
HIGH PRESSURE LIFTS ACROSS THE REGION. SMALL CRAFT CONDITIONS ALONG 
PORTIONS OF THE NEARSHORE WATERS WILL CONTINUE FOR ELEVATED WAVES AS 
THIS PROCESS UNFOLDS. SURFACE RIDGING WILL MAINTAIN INFLUENCE 
THROUGH THURSDAY, KEEPING WINDS RELATIVELY LIGHT FROM A 
SOUTHEASTERLY DIRECTION. A MODEST INCREASE IN EAST TO SOUTHEAST 
WINDS IS EXPECTED FRIDAY AS LOW PRESSURE TRACKS THROUGH THE NORTHERN 
OHIO VALLEY. WINDS TURN NORTHWESTERLY AND STRENGTHEN IN THE WAKE OF 
THIS LOW SATURDAY. COOLER AIR SPILLING BACK INTO THE REGION DURING 
THE LATTER HALF OF THE HOLIDAY WEEKEND WILL THEN BRING THE POTENTIAL 
FOR A PERIOD OF GALES, ALONG WITH HEAVY FREEZING SPRAY.

LHZ463-201000-
/O.EXP.KDTX.GL.W.0043.000000T0000Z-171220T0900Z/
LAKE HURON FROM HARBOR BEACH TO PORT SANILAC BEYOND 5NM OFF SHORE-
354 AM EST WED DEC 20 2017

...GALE WARNING WILL EXPIRE AT 4 AM EST EARLY THIS MORNING...

THE GALE WARNING WILL EXPIRE AT 4 AM EST EARLY THIS MORNING. 

* WIND AND WAVES: DURING THE GALE WARNING...EXPECT SUSTAINED 
  WINDS UP TO 27 KNOTS FROM THE NORTHWEST WITH GUSTS UP TO 33 
  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 3 AM EST 
  WEDNESDAY WITH THE LARGEST WAVES EXPECTED AROUND 3 AM EST 
  WEDNESDAY. 

$$

LHZ361-201000-
/O.EXP.KDTX.GL.W.0043.000000T0000Z-171220T0900Z/
LAKE HURON FROM 5NM EAST OF MACKINAC BRIDGE TO PRESQUE ISLE LT
BEYOND 5 NM OFF SHORE-
354 AM EST WED DEC 20 2017

...GALE WARNING WILL EXPIRE AT 4 AM EST EARLY THIS MORNING...

THE GALE WARNING WILL EXPIRE AT 4 AM EST EARLY THIS MORNING. 

* WIND AND WAVES: DURING THE GALE WARNING...EXPECT SUSTAINED 
  WINDS UP TO 29 KNOTS FROM THE NORTHWEST 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: THE MAXIMUM WINDS ARE EXPECTED AROUND 3 AM EST 
  WEDNESDAY WITH THE LARGEST WAVES EXPECTED AROUND 3 AM EST 
  WEDNESDAY. 

$$

LHZ362-363-462-201000-
/O.EXP.KDTX.GL.W.0043.000000T0000Z-171220T0900Z/
LAKE HURON FROM PRESQUE ISLE LIGHT TO STURGEON POINT MI BEYOND
5NM OFF SHORE-
LAKE HURON FROM STURGEON POINT TO ALABASTER MI BEYOND 5NM OFF
SHORE-
LAKE HURON FROM PORT AUSTIN TO HARBOR BEACH BEYOND 5NM OFF SHORE-
354 AM EST WED DEC 20 2017

...GALE WARNING WILL EXPIRE AT 4 AM EST EARLY THIS MORNING...

THE GALE WARNING WILL EXPIRE AT 4 AM EST EARLY THIS MORNING. 

* WIND AND WAVES: DURING THE GALE WARNING...EXPECT SUSTAINED 
  WINDS UP TO 29 KNOTS FROM THE NORTHWEST WITH GUSTS UP TO 36 
  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. 

$$

LHZ421-201500-
/O.CON.KDTX.SC.Y.0098.000000T0000Z-171220T1500Z/
OUTER SAGINAW BAY SW OF ALABASTER TO PORT AUSTIN MI TO INNER
SAGINAW BAY-
354 AM EST WED DEC 20 2017

...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 10 AM EST THIS
MORNING...

* WIND AND WAVES: DURING THE SMALL CRAFT ADVISORY...EXPECT 
  SUSTAINED WINDS UP TO 24 KNOTS FROM THE NORTHWEST WITH GUSTS 
  UP TO 30 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 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 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.

&&

$$

LHZ441-442-202100-
/O.CON.KDTX.SC.Y.0098.000000T0000Z-171220T2100Z/
PORT AUSTIN TO HARBOR BEACH MI-HARBOR BEACH TO PORT SANILAC MI-
354 AM EST WED DEC 20 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 27 KNOTS FROM THE NORTHWEST WITH GUSTS 
  UP TO 33 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 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 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.

&&

$$

DRK

Area Forecast Discussion
National Weather Service Detroit/Pontiac MI
349 AM EST Mon Dec 18 2017

.DISCUSSION...

Starting off with a little weather across lower MI as a warm front
lifts north through the area toward a stall front laid out across
mid MI. A shortwave ejecting out of the mid level trough over the
southwest conus will track along the front through southern lower MI
this morning and into the afternoon hours while a pv filament along
the longwave trough axis drops into the state. There has been decent
low level moisture present across the area for a couple days and
appears there will be a weak thermal ridge ahead of the shortwave
with enhanced 850mb moisture transport with it. Add in a brief
window with right entrance jet dynamics aloft skirting across
mid/northern MI and looks like chances are increasing for a period
of precipitation this morning. Main question for the forecast
through this afternoon will be ptype. Thermal profile north of I69
is cold enough for frozen precip, with soundings showing some ice
crystals at onset this morning. Mid level moisture gets stripped
away fairly quickly leading to more of a drizzle or freezing drizzle
setup. This leads to the second question, will the precip arrive
before the mid level moisture vacates or before the warm air pushing
north makes it too warm at the surface to allow freezing drizzle.
All in all with a low qpf scenario as advertised by most of the
hires suite, think any freezing drizzle that occurs should have
minimal impact. Areas of drizzle or light rain showers should linger
into the afternoon across eastern portions of the CWA as broader
area of lift with the height fall center passes.

Weather quiets down during the mid week period as longwave pattern
flattens out with the jet focused over the US/Canadian border. This
keeps the bulk of energy over southern Canada with only a short wave
clipping the northern Great Lakes Tuesday. We will stay on the warm
side of the jet allowing highs once again into the low to mid 40s. A
cold front will dig down through the northern/eastern Great Lakes
Tuesday night on the nose of a flaring up 150+ knot jet. Not much
moisture to support any precip, but temps will drop for Wednesday
back just below mid December average into the low/mid 30s.

Slight warming trend for Thursday as the main thermal gradient
meanders slowly back north again as shortwave ridge slides over the
region. This is in response to a developing system over the plains
that will lift through the Ohio Valley and Great Lakes Friday and
Saturday. This is a larger more developed system that will carry
much more moisture with it (GFS advertising near 1" PWAT) as it is
able to tap into Gulf moisture. Both the GFS and ECMWF have been
showing this system for a couple days now but continue to bounce
around with track of the low and thus strength/orientation of
frontal boundaries. Ptypes may be a concern early and late in the
event depending where the low and lead warm advective flank sets up,
but bulk of precip on Friday night looks to be liquid as the warm
sector reaches north into Ontario.

In the wake of this system, cold air will return for the foreseeable
future. Models have been quite persistent in deepening the longwave
trough over the west/central conus with a surge of cold air from
northern Canada. 850mb temps dropping into the Midwest have been
colder than -30C for a few models runs now.

&&

.MARINE...

Light wind and low waves will continue over all marine areas today
as a weak low and warm front move through the central Great Lakes.
This low will bring some areas of light rain and fog during the
daylight period. A strong low pressure system organizing over
central Canada today will track into the Hudson Bay region tonight.
Winds will respond to the increasing pressure gradient downstream,
leading to strengthening southwest flow overnight. The potential for
a period of gusts to gales will exist over the open waters, despite
the diminishing overlake stability as warmer air works into the
region. Strong cold front attendant to this low will then sweep
across the region on Tuesday. This will bring a longer window for
potential gales Tuesday and Tuesday night, as instability deepens
again under colder post-frontal westerly winds.  Winds ease into
Wednesday as high pressure settles over the marine areas.

&&

.PREV DISCUSSION...
Issued at 1222 AM EST Mon Dec 18 2017

AVIATION...

Difficult forecast continues as low level moisture advection begins
to increase as surface wave lifts toward lower Michigan. Main trend
this evening is to be much more bullish with light precipitation in
the 09-13Z timeframe on northern periphery of cyclonic circulation. A
fairly consistent consensus has developed with more coverage of
light qpf at less than 0.05inch. Taking the model soundings at face
value for depth of saturation. As a result, carrying a prevailing
group for light snow at MBS while including -FZRASN at FNT. With
surface temperature lifting above the freezing mark, and outside of
better deformation forcing will only be carrying a DZ mention for
the southern TAF sites. Unidirectional southwest flow with little
advections will keep low cloud over the area.

For DTW...given observation trends, rolled back on the LIFR/IFR
vsby/cig forecast. Did include prevailing drizzle with surface
temperatures above zero.

//DTW THRESHOLD PROBABILITIES...

* High for ceiling 5000 ft or less tonight.

* Moderate for rain precip type tonight.

* Low for 200 ft ceiling and/or 1/2 sm visibility tonight and Monday
  morning.

&&

.DTX WATCHES/WARNINGS/ADVISORIES...
MI...NONE.
Lake Huron...Gale Warning from midnight tonight to 4 AM EST Wednesday for LHZ362-
     363-462.

     Gale Warning from midnight tonight to 4 PM EST Tuesday for LHZ421-
     441.

     Gale Warning from 4 AM Tuesday to 4 AM EST Wednesday for LHZ361.

Lake St Clair...NONE.
Michigan waters of Lake Erie...NONE.
&&

DISCUSSION...DRK
MARINE.......MR
AVIATION.....MR

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

Hazardous Weather Outlook
National Weather Service Detroit/Pontiac MI
359 PM EST Sun Dec 17 2017

MIZ047>049-053>055-060>063-068>070-075-076-082-083-182100-
Midland-Bay-Huron-Saginaw-Tuscola-Sanilac-Shiawassee-Genesee-Lapeer-
St. Clair-Livingston-Oakland-Macomb-Washtenaw-Wayne-Lenawee-Monroe-
359 PM EST Sun Dec 17 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...Monday through Saturday

No hazardous weather is expected at this time.

.SPOTTER INFORMATION STATEMENT...

Spotter activation will not be needed today and tonight.

LCZ460-LEZ444-LHZ361>363-421-422-441>443-462>464-182100-
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-
359 PM EST Sun Dec 17 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...Monday through Saturday

The potential exists for southwesterly gales to develop across
central and northern Lake Huron late Monday night into Tuesday night.
A Gale Watch has been issued. See marine discussion for more details.

.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.

AA