Alert archive / Michigan / Small Craft Advisories in 2012

Small Craft Advisory 13, NWS Detroit, MI

February 10, 2012

NWS Detroit, MI issued this small craft advisory at Feb 10, 2012, 4:15 PM EST. It took effect at Feb 11, 2012, 4:00 AM EST. It was in force for 48 hr.

The area

The counties it named.

The facts

Issued
Feb 10, 2012, 4:15 PM EST (21:15 UTC)
In effect from
Feb 11, 2012, 4:00 AM EST
Expired
Feb 13, 2012, 4:00 AM EST
In force
48 hr
Issued by
NWS Detroit, MI

The text

As transmitted, in the capitals the NWS used until 2016.

667 
WHUS73 KDTX 102115
MWWDTX

URGENT - MARINE WEATHER MESSAGE
NATIONAL WEATHER SERVICE DETROIT/PONTIAC MI
415 PM EST FRI FEB 10 2012

...A SURGE OF ARCTIC AIR WILL BRING HAZARDOUS MARINE CONDITIONS TO
THE REGION THIS WEEKEND...

.THE COLD FRONT MOVING THROUGH THE GREAT LAKES TODAY WILL GENERATE A 
FEW HOURS OF GALE FORCE WINDS ON THE SOUTH END OF LAKE HURON TONIGHT 
THROUGH SATURDAY MORNING. SUPPORT FOR THE HEADLINE IS FOUND IN 
OBSERVATIONS OF GALE FORCE WIND GUSTS OVER THE SOUTH END OF LAKE 
MICHIGAN DURING THE LATE AFTERNOON HOURS WHICH WILL CARRY EASTWARD 
FOLLOWING A WAVE OF LOW PRESSURE ALONG THE FRONT. OUTSIDE OF THE 
GALE WARNING, SMALL CRAFT ADVISORIES WILL BE IN EFFECT FOR ALL OTHER 
MARINE AREAS. 

STRONG HIGH PRESSURE WILL SETTLE OVER THE PLAINS AND MIDWEST DURING 
SATURDAY AND SUNDAY AS ANOTHER SURGE OF ARCTIC AIR MOVES OVER THE 
NORTHERN GREAT LAKES. THE STEEP PRESSURE GRADIENT WILL MAINTAIN
POTENTIAL FOR NORTHWEST GALES OVER THE NORTH HALF OF LAKE HURON
OPEN WATERS THROUGH SUNDAY BEFORE A MODERATING TREND BEGINS
MONDAY. A GALE WATCH IS IN EFFECT FOR THE NORTH LAKE HURON OPEN
WATERS THROUGH SUNDAY WITH SMALL CRAFT ADVISORIES FOR THE SOUTHERN
NEARSHORE WATERS DUE TO HIGH WAVES.

LHZ363-462-110930-
/O.NEW.KDTX.GL.W.0011.120210T2115Z-120211T1200Z/
/O.CAN.KDTX.GL.A.0009.120211T1700Z-120212T1200Z/
LAKE HURON FROM STURGEON POINT TO ALABASTER MI BEYOND 5NM OFF
SHORE-
LAKE HURON FROM PORT AUSTIN TO HARBOR BEACH BEYOND 5NM OFF SHORE-
415 PM EST FRI FEB 10 2012

...GALE WARNING IN EFFECT UNTIL 7 AM EST SATURDAY...
...GALE WATCH IS CANCELLED...

THE NATIONAL WEATHER SERVICE IN DETROIT/PONTIAC HAS ISSUED A GALE
WARNING...WHICH IS IN EFFECT UNTIL 7 AM EST SATURDAY. 

* WIND AND WAVES: DURING THE GALE WARNING...EXPECT SUSTAINED WINDS
  UP TO 27 KNOTS FROM THE NORTH WITH GUSTS UP TO 35 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 12 AM EST 
  SATURDAY WITH THE LARGEST WAVES EXPECTED AROUND 3 AM EST 
  SATURDAY. 

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.

&&

$$

LHZ421-441-110930-
/O.UPG.KDTX.SC.Y.0011.000000T0000Z-120212T1200Z/
/O.NEW.KDTX.GL.W.0011.120210T2115Z-120211T1200Z/
/O.NEW.KDTX.SC.Y.0013.120211T1200Z-120213T0000Z/
OUTER SAGINAW BAY SW OF ALABASTER TO PORT AUSTIN MI TO INNER
SAGINAW BAY-PORT AUSTIN TO HARBOR BEACH MI-
415 PM EST FRI FEB 10 2012

...GALE WARNING IN EFFECT UNTIL 7 AM EST SATURDAY...
...SMALL CRAFT ADVISORY IN EFFECT FROM 7 AM SATURDAY TO 7 PM EST
SUNDAY...

THE NATIONAL WEATHER SERVICE IN DETROIT/PONTIAC HAS ISSUED A GALE
WARNING...WHICH IS IN EFFECT UNTIL 7 AM EST SATURDAY. A SMALL
CRAFT ADVISORY HAS ALSO BEEN ISSUED. THIS SMALL CRAFT ADVISORY IS
IN EFFECT FROM 7 AM SATURDAY TO 7 PM EST SUNDAY. 

* WIND AND WAVES: DURING THE GALE WARNING...EXPECT SUSTAINED WINDS
  UP TO 27 KNOTS FROM THE NORTH WITH GUSTS UP TO 35 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 7 PM EST FRIDAY 
  WITH THE LARGEST WAVES EXPECTED AROUND 4 AM EST SATURDAY. 

DURING THE SMALL CRAFT ADVISORY

* WIND AND WAVES: DURING THE SMALL CRAFT ADVISORY...EXPECT 
  SUSTAINED WINDS UP TO 24 KNOTS FROM THE NORTH WITH GUSTS UP TO 
  32 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 7 AM EST 
  SATURDAY WITH THE LARGEST WAVES EXPECTED AROUND 7 AM EST 
  SATURDAY. 

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.

&&

$$

LHZ442-443-110930-
/O.UPG.KDTX.SC.Y.0011.000000T0000Z-120212T1200Z/
/O.NEW.KDTX.GL.W.0011.120210T2115Z-120212T0000Z/
/O.NEW.KDTX.SC.Y.0013.120212T0000Z-120213T0000Z/
HARBOR BEACH TO PORT SANILAC MI-PORT SANILAC TO PORT HURON MI-
415 PM EST FRI FEB 10 2012

...GALE WARNING IN EFFECT UNTIL 7 PM EST SATURDAY...
...SMALL CRAFT ADVISORY IN EFFECT FROM 7 PM SATURDAY TO 7 PM EST
SUNDAY...

THE NATIONAL WEATHER SERVICE IN DETROIT/PONTIAC HAS ISSUED A GALE
WARNING...WHICH IS IN EFFECT UNTIL 7 PM EST SATURDAY. A SMALL
CRAFT ADVISORY HAS ALSO BEEN ISSUED. THIS SMALL CRAFT ADVISORY IS
IN EFFECT FROM 7 PM SATURDAY TO 7 PM EST SUNDAY. 

* WIND AND WAVES: DURING THE GALE WARNING...EXPECT SUSTAINED WINDS
  UP TO 28 KNOTS FROM THE NORTH WITH GUSTS UP TO 35 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 2 AM EST 
  SATURDAY WITH THE LARGEST WAVES EXPECTED AROUND 3 AM EST 
  SATURDAY. 

DURING THE SMALL CRAFT ADVISORY

* WIND AND WAVES: DURING THE SMALL CRAFT ADVISORY...EXPECT 
  SUSTAINED WINDS UP TO 21 KNOTS FROM THE WEST WITH GUSTS UP TO 
  27 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 7 AM EST SUNDAY 
  WITH THE LARGEST WAVES EXPECTED AROUND 1 PM EST SUNDAY. 

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.

&&

$$

LHZ463-464-110930-
/O.UPG.KDTX.GL.A.0009.120211T1700Z-120212T1200Z/
/O.NEW.KDTX.GL.W.0011.120210T2115Z-120212T0000Z/
LAKE HURON FROM HARBOR BEACH TO PORT SANILAC BEYOND 5NM OFF SHORE-
LAKE HURON FROM PORT SANILAC TO PORT HURON BEYOND 5NM OFF SHORE-
415 PM EST FRI FEB 10 2012

...GALE WARNING IN EFFECT UNTIL 7 PM EST SATURDAY...

THE NATIONAL WEATHER SERVICE IN DETROIT/PONTIAC HAS ISSUED A GALE
WARNING...WHICH IS IN EFFECT UNTIL 7 PM EST SATURDAY. 

* WIND AND WAVES: DURING THE GALE WARNING...EXPECT SUSTAINED 
  WINDS UP TO 29 KNOTS FROM THE NORTH WITH GUSTS UP TO 36 
  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 2 AM EST 
  SATURDAY WITH THE LARGEST WAVES EXPECTED AROUND 3 AM EST 
  SATURDAY. 

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-LEZ444-110930-
/O.EXB.KDTX.SC.Y.0012.000000T0000Z-120212T0000Z/
LAKE ST. CLAIR-
MICHIGAN WATERS OF LAKE ERIE FROM DETROIT RIVER TO NORTH CAPE MI-
415 PM EST FRI FEB 10 2012

...SMALL CRAFT ADVISORY IN EFFECT UNTIL 7 PM EST SATURDAY...

THE NATIONAL WEATHER SERVICE IN DETROIT/PONTIAC HAS ISSUED A
SMALL CRAFT ADVISORY...WHICH IS IN EFFECT UNTIL 7 PM EST
SATURDAY. 

* WIND AND WAVES: DURING THE SMALL CRAFT ADVISORY...EXPECT 
  SUSTAINED WINDS UP TO 24 KNOTS FROM THE NORTH 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 5 AM EST 
  SATURDAY WITH THE LARGEST WAVES EXPECTED AROUND 5 AM EST 
  SATURDAY. 

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.

&&

$$

LHZ422-110930-
/O.EXT.KDTX.SC.Y.0012.000000T0000Z-120211T1200Z/
INNER SAGINAW BAY SW OF POINT AU GRES TO BAY PORT MI-
415 PM EST FRI FEB 10 2012

...SMALL CRAFT ADVISORY NOW IN EFFECT UNTIL 7 AM EST SATURDAY...

THE SMALL CRAFT ADVISORY IS NOW IN EFFECT UNTIL 7 AM EST
SATURDAY. 

* WIND AND WAVES: DURING THE SMALL CRAFT ADVISORY...EXPECT
  SUSTAINED WINDS UP TO 25 KNOTS FROM THE NORTH 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 7 PM EST FRIDAY 
  WITH THE LARGEST WAVES EXPECTED AROUND 8 PM EST FRIDAY. 

REFER TO THE LATEST MARINE FORECASTS FOR GREATER DETAIL.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A SMALL CRAFT ADVISORY MEANS THAT WIND SPEEDS OF 21 TO 33 KNOTS
ARE EXPECTED TO PRODUCE HAZARDOUS WAVE CONDITIONS TO SMALL CRAFT.
INEXPERIENCED MARINERS...ESPECIALLY THOSE OPERATING SMALLER
VESSELS SHOULD AVOID NAVIGATING IN THESE CONDITIONS.

&&

$$

LHZ361-362-110930-
/O.EXT.KDTX.GL.A.0009.120212T0000Z-120213T0000Z/
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-
415 PM EST FRI FEB 10 2012

...GALE WATCH NOW IN EFFECT FROM SATURDAY EVENING THROUGH SUNDAY
EVENING...

THE GALE WATCH IS NOW IN EFFECT FROM SATURDAY EVENING THROUGH
SUNDAY EVENING. 

* WIND AND WAVES: DURING THE GALE WATCH...EXPECT SUSTAINED WINDS
  UP TO 29 KNOTS FROM THE WEST WITH GUSTS UP TO 35 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 12 AM EST SUNDAY 
  WITH THE LARGEST WAVES EXPECTED AROUND 3 AM EST SUNDAY. 

REFER TO THE LATEST MARINE FORECASTS FOR GREATER DETAIL.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A GALE WATCH IS ISSUED WHEN THE RISK OF GALE FORCE WINDS OF 34 TO
47 KNOTS HAS SIGNIFICANTLY INCREASED...BUT THE SPECIFIC TIMING
AND/OR LOCATION IS STILL UNCERTAIN. IT IS INTENDED TO PROVIDE
ADDITIONAL LEAD TIME FOR MARINERS WHO MAY WISH TO CONSIDER
ALTERING THEIR PLANS.

&&

$$

BT
7 follow-up statements
870 
WHUS73 KDTX 110900
MWWDTX

URGENT - MARINE WEATHER MESSAGE
NATIONAL WEATHER SERVICE DETROIT/PONTIAC MI
400 AM EST SAT FEB 11 2012

...A SURGE OF ARCTIC AIR WILL BRING HAZARDOUS MARINE CONDITIONS TO
THE REGION THIS WEEKEND...

.STRONG NORTHERLY WINDS IN THE WAKE OF FRIDAY COLD FRONTAL PASSAGE 
AND HIGH PRESSURE BUILDING OVER THE NORTHERN PLAINS WILL KEEP THE 
GRADIENT FAIRLY TIGHT OVER THE EASTERN LAKES. THIS SETUP WILL 
CONTINUE TO PRODUCE GALE FORCE WINDS OVER THE SOUTH END OF LAKE 
HURON THROUGH THIS AFTERNOON.  OUTSIDE OF THE GALE WARNING, SMALL 
CRAFT ADVISORIES WILL BE IN EFFECT FOR ALL OTHER MARINE AREAS. 

STRONG HIGH PRESSURE WILL SETTLE ACROSS THE CENTRAL PLAINS AND 
MIDWEST TODAY AND SUNDAY AS ANOTHER SURGE OF ARCTIC AIR MOVES OVER 
THE GREAT LAKES. THE RESULTING PRESSURE GRADIENT WILL PRODUCE 
NORTHWEST GALES OVER THE NORTHERN TWO THIRDS OF LAKE HURON OPEN 
WATERS THROUGH SUNDAY AFTERNOON BEFORE A MODERATING TREND BEGINS 
MONDAY. GALE WARNING HAS BEEN ISSUED FOR THOSE AREAS ALONG WITH 
SMALL CRAFT ADVISORIES FOR THE SOUTHERN NEARSHORE WATERS DUE TO HIGH 
WAVES.

LHZ363-462-112130-
/O.CAN.KDTX.GL.W.0011.000000T0000Z-120211T1200Z/
/O.NEW.KDTX.GL.W.0012.120212T0000Z-120212T2100Z/
LAKE HURON FROM STURGEON POINT TO ALABASTER MI BEYOND 5NM OFF
SHORE-
LAKE HURON FROM PORT AUSTIN TO HARBOR BEACH BEYOND 5NM OFF SHORE-
400 AM EST SAT FEB 11 2012

...GALE WARNING IN EFFECT FROM 7 PM THIS EVENING TO 4 PM EST
SUNDAY...
...GALE WARNING IS CANCELLED...

THE NATIONAL WEATHER SERVICE IN DETROIT/PONTIAC HAS ISSUED A GALE
WARNING...WHICH IS IN EFFECT FROM 7 PM THIS EVENING TO 4 PM EST
SUNDAY. 

* WIND AND WAVES: DURING THE GALE WARNING...EXPECT SUSTAINED 
  WINDS UP TO 27 KNOTS FROM THE NORTHWEST WITH GUSTS UP TO 35 
  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 5 AM EST SUNDAY 
  WITH THE LARGEST WAVES EXPECTED AROUND 7 AM EST SUNDAY. 

THE GALE WARNING HAS BEEN CANCELLED. 

REFER TO THE LATEST MARINE FORECASTS FOR GREATER DETAIL.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A GALE WARNING MEANS WINDS OF 34 TO 47 KNOTS ARE IMMINENT OR
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.

&&

$$

LHZ421-441-112130-
/O.CAN.KDTX.GL.W.0011.000000T0000Z-120211T1200Z/
/O.EXT.KDTX.SC.Y.0013.120211T0900Z-120213T0000Z/
OUTER SAGINAW BAY SW OF ALABASTER TO PORT AUSTIN MI TO INNER
SAGINAW BAY-PORT AUSTIN TO HARBOR BEACH MI-
400 AM EST SAT FEB 11 2012

...SMALL CRAFT ADVISORY NOW IN EFFECT UNTIL 7 PM EST SUNDAY...
...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
7 PM EST SUNDAY. 

* WIND AND WAVES: DURING THE SMALL CRAFT ADVISORY...EXPECT 
  SUSTAINED WINDS UP TO 25 KNOTS FROM THE NORTH 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 
  SATURDAY WITH THE LARGEST WAVES EXPECTED AROUND 3 AM EST 
  SATURDAY. 

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.

&&

$$

LHZ361-362-112130-
/O.UPG.KDTX.GL.A.0009.120212T0000Z-120213T0000Z/
/O.EXB.KDTX.GL.W.0011.120212T0000Z-120212T2100Z/
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-
400 AM EST SAT FEB 11 2012

...GALE WARNING IN EFFECT FROM 7 PM THIS EVENING TO 4 PM EST
SUNDAY...

THE NATIONAL WEATHER SERVICE IN DETROIT/PONTIAC HAS ISSUED A GALE
WARNING...WHICH IS IN EFFECT FROM 7 PM THIS EVENING TO 4 PM EST
SUNDAY. 

* 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 11 FEET 
  WITH A POTENTIAL MAXIMUM WAVE HEIGHT OF 16 FEET. 

* TIMING: THE MAXIMUM WINDS ARE EXPECTED AROUND 11 PM EST 
  SATURDAY WITH THE LARGEST WAVES EXPECTED AROUND 6 AM EST 
  SUNDAY. 

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.

&&

$$

LHZ442-443-112130-
/O.CON.KDTX.GL.W.0011.000000T0000Z-120212T0000Z/
/O.CON.KDTX.SC.Y.0013.120212T0000Z-120213T0000Z/
HARBOR BEACH TO PORT SANILAC MI-PORT SANILAC TO PORT HURON MI-
400 AM EST SAT FEB 11 2012

...GALE WARNING REMAINS IN EFFECT UNTIL 7 PM EST THIS EVENING...
...SMALL CRAFT ADVISORY REMAINS IN EFFECT FROM 7 PM THIS EVENING
TO 7 PM EST SUNDAY...

A GALE WARNING REMAINS IN EFFECT UNTIL 7 PM EST THIS EVENING. 

* WIND AND WAVES: DURING THE GALE WARNING...EXPECT SUSTAINED 
  WINDS UP TO 29 KNOTS FROM THE NORTH WITH GUSTS UP TO 36 
  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 
  SATURDAY WITH THE LARGEST WAVES EXPECTED AROUND 3 AM EST 
  SATURDAY. 

A SMALL CRAFT ADVISORY REMAINS IN EFFECT FROM 7 PM THIS EVENING
TO 7 PM EST SUNDAY. 

* WIND AND WAVES: DURING THE SMALL CRAFT ADVISORY...EXPECT 
  SUSTAINED WINDS UP TO 21 KNOTS FROM THE WEST WITH GUSTS UP TO 
  28 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 4 AM EST SUNDAY 
  WITH THE LARGEST WAVES EXPECTED AROUND 11 AM EST SUNDAY. 

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.

&&

$$

LHZ463-464-112130-
/O.CON.KDTX.GL.W.0011.000000T0000Z-120212T0000Z/
LAKE HURON FROM HARBOR BEACH TO PORT SANILAC BEYOND 5NM OFF SHORE-
LAKE HURON FROM PORT SANILAC TO PORT HURON BEYOND 5NM OFF SHORE-
400 AM EST SAT FEB 11 2012

...GALE WARNING REMAINS IN EFFECT UNTIL 7 PM EST THIS EVENING...

A GALE WARNING REMAINS IN EFFECT UNTIL 7 PM EST THIS EVENING. 

* WIND AND WAVES: DURING THE GALE WARNING...EXPECT SUSTAINED 
  WINDS UP TO 29 KNOTS FROM THE NORTH WITH GUSTS UP TO 37 
  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 
  SATURDAY WITH THE LARGEST WAVES EXPECTED AROUND 3 AM EST 
  SATURDAY. 

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.

&&

$$

LHZ422-111500-
/O.EXT.KDTX.SC.Y.0012.000000T0000Z-120211T1500Z/
INNER SAGINAW BAY SW OF POINT AU GRES TO BAY PORT MI-
400 AM EST SAT FEB 11 2012

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

THE SMALL CRAFT ADVISORY IS NOW IN EFFECT UNTIL 10 AM EST THIS
MORNING. 

* WIND AND WAVES: DURING THE SMALL CRAFT ADVISORY...EXPECT 
  SUSTAINED WINDS UP TO 23 KNOTS FROM THE NORTH 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 3 AM EST 
  SATURDAY WITH THE LARGEST WAVES EXPECTED AROUND 4 AM EST 
  SATURDAY. 

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.

&&

$$

LCZ460-LEZ444-112130-
/O.CON.KDTX.SC.Y.0012.000000T0000Z-120212T0000Z/
LAKE ST. CLAIR-
MICHIGAN WATERS OF LAKE ERIE FROM DETROIT RIVER TO NORTH CAPE MI-
400 AM EST SAT FEB 11 2012

...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 7 PM EST THIS
EVENING...

A SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 7 PM EST THIS
EVENING. 

* WIND AND WAVES: DURING THE SMALL CRAFT ADVISORY...EXPECT 
  SUSTAINED WINDS UP TO 24 KNOTS FROM THE NORTH 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 4 AM EST 
  SATURDAY WITH THE LARGEST WAVES EXPECTED AROUND 5 AM EST 
  SATURDAY. 

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.

&&

$$
324 
WHUS73 KDTX 111432
MWWDTX

URGENT - MARINE WEATHER MESSAGE
NATIONAL WEATHER SERVICE DETROIT/PONTIAC MI
932 AM EST SAT FEB 11 2012

...STRONG WINDS THIS WEEKEND...

.STRONG HIGH PRESSURE OVER THE CENTRAL PLAINS THIS AFTERNOON WILL
SLIDE OVER THE SOUTHEASTERN UNITED STATES BY MONDAY MORNING.
MEANWHILE...DEEPENING LOW PRESSURE OVER THE MID ATLANTIC WILL MOVE OFF
THE EAST COAST. THE END RESULT...STRONG NORTHWEST WINDS WILL
PREVAIL ACROSS THE CENTRAL GREAT LAKES THIS WEEKEND AS ARCTIC AIR
FUNNELS THROUGH...WITH GALE FORCE WINDS OVER THE OPEN WATERS OF
LAKE HURON.

LHZ422-111545-
/O.CAN.KDTX.SC.Y.0012.000000T0000Z-120211T1500Z/
INNER SAGINAW BAY SW OF POINT AU GRES TO BAY PORT MI-
932 AM EST SAT FEB 11 2012

...SMALL CRAFT ADVISORY IS CANCELLED...

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

$$

LHZ442-443-120245-
/O.CON.KDTX.GL.W.0011.000000T0000Z-120212T0000Z/
/O.CON.KDTX.SC.Y.0013.120212T0000Z-120213T0000Z/
HARBOR BEACH TO PORT SANILAC MI-PORT SANILAC TO PORT HURON MI-
932 AM EST SAT FEB 11 2012

...GALE WARNING REMAINS IN EFFECT UNTIL 7 PM EST THIS EVENING...
...SMALL CRAFT ADVISORY REMAINS IN EFFECT FROM 7 PM THIS EVENING
TO 7 PM EST SUNDAY...

A GALE WARNING REMAINS IN EFFECT UNTIL 7 PM EST THIS EVENING. 

* WIND AND WAVES: DURING THE GALE WARNING...EXPECT SUSTAINED WINDS
  UP TO 24 KNOTS FROM THE NORTH WITH GUSTS UP TO 35 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 
  SATURDAY WITH THE LARGEST WAVES EXPECTED AROUND 9 AM EST 
  SATURDAY. 

A SMALL CRAFT ADVISORY REMAINS IN EFFECT FROM 7 PM THIS EVENING
TO 7 PM EST SUNDAY. 

* WIND AND WAVES: DURING THE SMALL CRAFT ADVISORY...EXPECT 
  SUSTAINED WINDS UP TO 21 KNOTS FROM THE WEST WITH GUSTS UP TO 
  28 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 4 AM EST SUNDAY 
  WITH THE LARGEST WAVES EXPECTED AROUND 11 AM EST SUNDAY. 

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.

&&

$$

LHZ463-464-120000-
/O.CON.KDTX.GL.W.0011.000000T0000Z-120212T0000Z/
LAKE HURON FROM HARBOR BEACH TO PORT SANILAC BEYOND 5NM OFF SHORE-
LAKE HURON FROM PORT SANILAC TO PORT HURON BEYOND 5NM OFF SHORE-
932 AM EST SAT FEB 11 2012

...GALE WARNING REMAINS IN EFFECT UNTIL 7 PM EST THIS EVENING...

A GALE WARNING REMAINS IN EFFECT UNTIL 7 PM EST THIS EVENING. 

* WIND AND WAVES: DURING THE GALE WARNING...EXPECT SUSTAINED 
  WINDS UP TO 27 KNOTS FROM THE NORTH WITH GUSTS UP TO 35 
  KNOTS. THE LARGEST EXPECTED SIGNIFICANT WAVES WILL BE 11 FEET 
  WITH A POTENTIAL MAXIMUM WAVE HEIGHT OF 16 FEET. 

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

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.

&&

$$

LHZ363-462-120245-
/O.CON.KDTX.GL.W.0012.120212T0000Z-120212T2100Z/
LAKE HURON FROM STURGEON POINT TO ALABASTER MI BEYOND 5NM OFF
SHORE-
LAKE HURON FROM PORT AUSTIN TO HARBOR BEACH BEYOND 5NM OFF SHORE-
932 AM EST SAT FEB 11 2012

...GALE WARNING REMAINS IN EFFECT FROM 7 PM THIS EVENING TO 4 PM
EST SUNDAY...

A GALE WARNING REMAINS IN EFFECT FROM 7 PM THIS EVENING TO 4 PM
EST SUNDAY. 

* WIND AND WAVES: DURING THE GALE WARNING...EXPECT SUSTAINED 
  WINDS UP TO 27 KNOTS FROM THE NORTHWEST WITH GUSTS UP TO 34 
  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 5 AM EST SUNDAY 
  WITH THE LARGEST WAVES EXPECTED AROUND 7 AM EST SUNDAY. 

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.

&&

$$

LHZ361-362-120245-
/O.CON.KDTX.GL.W.0011.120212T0000Z-120212T2100Z/
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-
932 AM EST SAT FEB 11 2012

...GALE WARNING REMAINS IN EFFECT FROM 7 PM THIS EVENING TO 4 PM
EST SUNDAY...

A GALE WARNING REMAINS IN EFFECT FROM 7 PM THIS EVENING TO 4 PM
EST SUNDAY. 

* 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 11 FEET 
  WITH A POTENTIAL MAXIMUM WAVE HEIGHT OF 16 FEET. 

* TIMING: THE MAXIMUM WINDS ARE EXPECTED AROUND 11 PM EST 
  SATURDAY WITH THE LARGEST WAVES EXPECTED AROUND 6 AM EST 
  SUNDAY. 

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.

&&

$$

LHZ421-441-120245-
/O.CON.KDTX.SC.Y.0013.000000T0000Z-120213T0000Z/
OUTER SAGINAW BAY SW OF ALABASTER TO PORT AUSTIN MI TO INNER
SAGINAW BAY-PORT AUSTIN TO HARBOR BEACH MI-
932 AM EST SAT FEB 11 2012

...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 7 PM EST SUNDAY...

A SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 7 PM EST SUNDAY. 

* WIND AND WAVES: DURING THE SMALL CRAFT ADVISORY...EXPECT 
  SUSTAINED WINDS UP TO 23 KNOTS FROM THE NORTH WITH GUSTS UP 
  TO 30 KNOTS. THE LARGEST EXPECTED SIGNIFICANT WAVES WILL BE 9 
  FEET WITH A POTENTIAL MAXIMUM WAVE HEIGHT OF 13 FEET. 

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

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.

&&

$$

LCZ460-LEZ444-120000-
/O.CON.KDTX.SC.Y.0012.000000T0000Z-120212T0000Z/
LAKE ST. CLAIR-
MICHIGAN WATERS OF LAKE ERIE FROM DETROIT RIVER TO NORTH CAPE MI-
932 AM EST SAT FEB 11 2012

...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 7 PM EST THIS
EVENING...

A SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 7 PM EST THIS
EVENING. 

* WIND AND WAVES: DURING THE SMALL CRAFT ADVISORY...EXPECT 
  SUSTAINED WINDS UP TO 22 KNOTS FROM THE NORTH 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 9 AM EST 
  SATURDAY WITH THE LARGEST WAVES EXPECTED AROUND 9 AM EST 
  SATURDAY. 

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.

&&

$$
378 
WHUS73 KDTX 112011
MWWDTX

URGENT - MARINE WEATHER MESSAGE
NATIONAL WEATHER SERVICE DETROIT/PONTIAC MI
311 PM EST SAT FEB 11 2012

...STRONG WINDS AND FREEZING SPRAY THIS WEEKEND...

.A BACK DOOR COLD FRONT WILL ATTEMPT TO SLIDE INTO LAKE HURON 
TONIGHT...TIGHTENING UP THE GRADIENT IN ADDITION TO THE LAKE INDUCED 
TROUGHING WHICH IS EXPECTED TO PRODUCE A PERIOD OF MARGINAL GALE 
FORCE WINDS ACROSS THE MAJORITY OF THE OPEN WATERS OF LAKE 
HURON...AS VERY COLD AIR AND UNSTABLE CONDITIONS ARE PRESENT. A 
WEAKENING RIDGE OF HIGH PRESSURE OVER THE UPPER MISSISSIPPI RIVER 
VALLEY WILL GRADUALLY ADVANCE EAST...ALLOWING WIND AND WAVES TO 
DIMINISH LATER SUNDAY AND MONDAY. MILDER AIR WORKING INTO THE 
CENTRAL GREAT LAKES WILL LEAD TO WINDS DIMINISHING FURTHER AS WE 
HEAD INTO TUESDAY WITH A MORE STABLE REGIME TAKING OVER.

LHZ442-443-120815-
/O.CAN.KDTX.GL.W.0011.000000T0000Z-120212T0000Z/
/O.NEW.KDTX.UP.W.0001.120211T2011Z-120212T1200Z/
/O.EXT.KDTX.SC.Y.0013.120211T2011Z-120213T0000Z/
HARBOR BEACH TO PORT SANILAC MI-PORT SANILAC TO PORT HURON MI-
311 PM EST SAT FEB 11 2012

...HEAVY FREEZING SPRAY WARNING IN EFFECT UNTIL 7 AM EST SUNDAY...
...SMALL CRAFT ADVISORY NOW IN EFFECT UNTIL 7 PM EST SUNDAY...
...GALE WARNING IS CANCELLED...

THE NATIONAL WEATHER SERVICE IN DETROIT/PONTIAC HAS ISSUED A
HEAVY FREEZING SPRAY WARNING...WHICH IS IN EFFECT UNTIL 7 AM EST
SUNDAY. 

* EXPECT HEAVY FREEZING SPRAY TO OCCUR UNTIL 7 AM EST SUNDAY.

THE GALE WARNING HAS BEEN CANCELLED. THE SMALL CRAFT ADVISORY IS
NOW IN EFFECT UNTIL 7 PM EST SUNDAY. 

* WIND AND WAVES: DURING THE SMALL CRAFT ADVISORY...EXPECT 
  SUSTAINED WINDS UP TO 26 KNOTS FROM THE NORTHWEST WITH GUSTS 
  UP TO 30 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 SUNDAY 
  WITH THE LARGEST WAVES EXPECTED AROUND 5 AM EST SUNDAY. 

REFER TO THE LATEST MARINE FORECASTS FOR GREATER DETAIL.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A HEAVY FREEZING SPRAY WARNING MEANS HEAVY FREEZING SPRAY IS
EXPECTED TO RAPIDLY ACCUMULATE ON VESSELS. THESE CONDITIONS CAN
BE EXTREMELY HAZARDOUS TO NAVIGATION. IT IS RECOMMENDED THAT
MARINERS NOT TRAINED TO OPERATE IN THESE CONDITIONS OR VESSELS
NOT PROPERLY EQUIPED TO DO SO...REMAIN IN PORT OR AVOID THE
WARING AREA.

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.

&&

$$

LHZ463-464-120815-
/O.CAN.KDTX.GL.W.0011.000000T0000Z-120212T0000Z/
/O.NEW.KDTX.UP.W.0001.120211T2011Z-120212T1200Z/
LAKE HURON FROM HARBOR BEACH TO PORT SANILAC BEYOND 5NM OFF SHORE-
LAKE HURON FROM PORT SANILAC TO PORT HURON BEYOND 5NM OFF SHORE-
311 PM EST SAT FEB 11 2012

...HEAVY FREEZING SPRAY WARNING IN EFFECT UNTIL 7 AM EST SUNDAY...
...GALE WARNING IS CANCELLED...

THE NATIONAL WEATHER SERVICE IN DETROIT/PONTIAC HAS ISSUED A
HEAVY FREEZING SPRAY WARNING...WHICH IS IN EFFECT UNTIL 7 AM EST
SUNDAY. 

* EXPECT HEAVY FREEZING SPRAY TO OCCUR UNTIL 7 AM EST SUNDAY.

THE GALE WARNING HAS BEEN CANCELLED. 

REFER TO THE LATEST MARINE FORECASTS FOR GREATER DETAIL.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A HEAVY FREEZING SPRAY WARNING MEANS HEAVY FREEZING SPRAY IS
EXPECTED TO RAPIDLY ACCUMULATE ON VESSELS. THESE CONDITIONS CAN
BE EXTREMELY HAZARDOUS TO NAVIGATION. IT IS RECOMMENDED THAT
MARINERS NOT TRAINED TO OPERATE IN THESE CONDITIONS OR VESSELS
NOT PROPERLY EQUIPED TO DO SO...REMAIN IN PORT OR AVOID THE
WARING AREA.

&&

$$

LCZ460-LEZ444-112115-
/O.CAN.KDTX.SC.Y.0012.000000T0000Z-120212T0000Z/
LAKE ST. CLAIR-
MICHIGAN WATERS OF LAKE ERIE FROM DETROIT RIVER TO NORTH CAPE MI-
311 PM EST SAT FEB 11 2012

...SMALL CRAFT ADVISORY IS CANCELLED...

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

$$

LHZ363-462-120815-
/O.NEW.KDTX.UP.W.0001.120211T2011Z-120212T1200Z/
/O.EXT.KDTX.GL.W.0012.120211T2200Z-120213T0000Z/
LAKE HURON FROM STURGEON POINT TO ALABASTER MI BEYOND 5NM OFF
SHORE-
LAKE HURON FROM PORT AUSTIN TO HARBOR BEACH BEYOND 5NM OFF SHORE-
311 PM EST SAT FEB 11 2012

...HEAVY FREEZING SPRAY WARNING IN EFFECT UNTIL 7 AM EST SUNDAY...
...GALE WARNING NOW IN EFFECT UNTIL 7 PM EST SUNDAY...

THE NATIONAL WEATHER SERVICE IN DETROIT/PONTIAC HAS ISSUED A
HEAVY FREEZING SPRAY WARNING...WHICH IS IN EFFECT UNTIL 7 AM EST
SUNDAY. 

* EXPECT HEAVY FREEZING SPRAY TO OCCUR UNTIL 7 AM EST SUNDAY.

THE GALE WARNING IS NOW IN EFFECT UNTIL 7 PM EST SUNDAY. 

* WIND AND WAVES: DURING THE GALE WARNING...EXPECT SUSTAINED 
  WINDS UP TO 32 KNOTS FROM THE NORTHWEST WITH GUSTS UP TO 34 
  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 12 AM EST SUNDAY 
  WITH THE LARGEST WAVES EXPECTED AROUND 3 AM EST SUNDAY. 

REFER TO THE LATEST MARINE FORECASTS FOR GREATER DETAIL.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A HEAVY FREEZING SPRAY WARNING MEANS HEAVY FREEZING SPRAY IS
EXPECTED TO RAPIDLY ACCUMULATE ON VESSELS. THESE CONDITIONS CAN
BE EXTREMELY HAZARDOUS TO NAVIGATION. IT IS RECOMMENDED THAT
MARINERS NOT TRAINED TO OPERATE IN THESE CONDITIONS OR VESSELS
NOT PROPERLY EQUIPED TO DO SO...REMAIN IN PORT OR AVOID THE
WARING AREA.

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.

&&

$$

LHZ361-362-120815-
/O.NEW.KDTX.UP.W.0001.120211T2011Z-120212T1200Z/
/O.EXT.KDTX.GL.W.0011.120211T2200Z-120213T0000Z/
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-
311 PM EST SAT FEB 11 2012

...HEAVY FREEZING SPRAY WARNING IN EFFECT UNTIL 7 AM EST SUNDAY...
...GALE WARNING NOW IN EFFECT UNTIL 7 PM EST SUNDAY...

THE NATIONAL WEATHER SERVICE IN DETROIT/PONTIAC HAS ISSUED A
HEAVY FREEZING SPRAY WARNING...WHICH IS IN EFFECT UNTIL 7 AM EST
SUNDAY. 

* EXPECT HEAVY FREEZING SPRAY TO OCCUR UNTIL 7 AM EST SUNDAY.

THE GALE WARNING IS NOW IN EFFECT UNTIL 7 PM EST SUNDAY. 

* WIND AND WAVES: DURING THE GALE WARNING...EXPECT SUSTAINED 
  WINDS UP TO 31 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 8 PM EST 
  SATURDAY WITH THE LARGEST WAVES EXPECTED AROUND 12 AM EST 
  SUNDAY. 

REFER TO THE LATEST MARINE FORECASTS FOR GREATER DETAIL.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A HEAVY FREEZING SPRAY WARNING MEANS HEAVY FREEZING SPRAY IS
EXPECTED TO RAPIDLY ACCUMULATE ON VESSELS. THESE CONDITIONS CAN
BE EXTREMELY HAZARDOUS TO NAVIGATION. IT IS RECOMMENDED THAT
MARINERS NOT TRAINED TO OPERATE IN THESE CONDITIONS OR VESSELS
NOT PROPERLY EQUIPED TO DO SO...REMAIN IN PORT OR AVOID THE
WARING AREA.

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.

&&

$$

LHZ421-441-120815-
/O.NEW.KDTX.UP.W.0001.120211T2011Z-120212T1200Z/
/O.CON.KDTX.SC.Y.0013.000000T0000Z-120213T0000Z/
OUTER SAGINAW BAY SW OF ALABASTER TO PORT AUSTIN MI TO INNER
SAGINAW BAY-PORT AUSTIN TO HARBOR BEACH MI-
311 PM EST SAT FEB 11 2012

...HEAVY FREEZING SPRAY WARNING IN EFFECT UNTIL 7 AM EST SUNDAY...
...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 7 PM EST SUNDAY...

THE NATIONAL WEATHER SERVICE IN DETROIT/PONTIAC HAS ISSUED A
HEAVY FREEZING SPRAY WARNING...WHICH IS IN EFFECT UNTIL 7 AM EST
SUNDAY. 

* EXPECT HEAVY FREEZING SPRAY TO OCCUR UNTIL 7 AM EST SUNDAY.

A SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 7 PM EST SUNDAY. 

* WIND AND WAVES: DURING THE SMALL CRAFT ADVISORY...EXPECT 
  SUSTAINED WINDS UP TO 27 KNOTS FROM THE NORTHWEST WITH GUSTS 
  UP TO 31 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 12 AM EST SUNDAY 
  WITH THE LARGEST WAVES EXPECTED AROUND 5 AM EST SUNDAY. 

REFER TO THE LATEST MARINE FORECASTS FOR GREATER DETAIL.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A HEAVY FREEZING SPRAY WARNING MEANS HEAVY FREEZING SPRAY IS
EXPECTED TO RAPIDLY ACCUMULATE ON VESSELS. THESE CONDITIONS CAN
BE EXTREMELY HAZARDOUS TO NAVIGATION. IT IS RECOMMENDED THAT
MARINERS NOT TRAINED TO OPERATE IN THESE CONDITIONS OR VESSELS
NOT PROPERLY EQUIPED TO DO SO...REMAIN IN PORT OR AVOID THE
WARING AREA.

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.

&&

$$
495 
WHUS73 KDTX 120859
MWWDTX

URGENT - MARINE WEATHER MESSAGE
NATIONAL WEATHER SERVICE DETROIT/PONTIAC MI
359 AM EST SUN FEB 12 2012

...STRONG WINDS TO PERSIST THROUGH THIS EVENING...

.A WEAK SHORTWAVE WILL PASS EAST OF LAKE HURON EARLY TODAY EMBEDDED 
IN THE NORTHWEST FLOW ALOFT. THIS TROUGH...ALONG WITH BROAD HIGH 
PRESSURE OVER THE CENTRAL PLAINS...WILL KEEP THE PRESSURE GRADIENT 
TIGHT OVER THE GREAT LAKES UNTIL THIS EVENING. IN ADDITION...A VERY 
COLD AIRMASS OVER THE LAKES WILL PRODUCE UNSTABLE CONDITIONS OVER 
LAKE HURON. THIS WILL PRODUCE MARGINAL GALE FORCE WINDS OVER THE 
MAJORITY OF THE OPEN WATERS OF LAKE HURON TODAY. WEAK RIDGING WILL 
BUILD INTO THE REGION TODAY AS THE HIGH PRESSURE SYSTEM SLIDES TO 
THE SOUTHEAST. THIS WILL ADVECT A WARMER AIRMASS AND ALLOW WINDS TO 
RELAX LATER THIS EVENING. STABLE CONDITIONS WILL PERSIST INTO MONDAY 
BEFORE THE NEXT LOW PRESSURE SYSTEM ADVANCES TOWARD THE REGION FROM 
THE CENTRAL PLAINS.

LHZ363-462-122130-
/O.CAN.KDTX.UP.W.0001.000000T0000Z-120212T1200Z/
/O.CON.KDTX.GL.W.0012.000000T0000Z-120213T0000Z/
LAKE HURON FROM STURGEON POINT TO ALABASTER MI BEYOND 5NM OFF
SHORE-
LAKE HURON FROM PORT AUSTIN TO HARBOR BEACH BEYOND 5NM OFF SHORE-
359 AM EST SUN FEB 12 2012

...GALE WARNING REMAINS IN EFFECT UNTIL 7 PM EST THIS EVENING...
...HEAVY FREEZING SPRAY WARNING IS CANCELLED...

THE NATIONAL WEATHER SERVICE IN DETROIT/PONTIAC HAS CANCELLED THE
HEAVY FREEZING SPRAY WARNING. A GALE WARNING REMAINS IN EFFECT
UNTIL 7 PM EST THIS EVENING. 

* WIND AND WAVES: DURING THE GALE WARNING...EXPECT SUSTAINED 
  WINDS UP TO 28 KNOTS FROM THE WEST WITH GUSTS UP TO 35 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 5 AM EST SUNDAY 
  WITH THE LARGEST WAVES EXPECTED AROUND 3 AM EST SUNDAY. 

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.

&&

$$

LHZ361-362-122130-
/O.CAN.KDTX.UP.W.0001.000000T0000Z-120212T1200Z/
/O.CON.KDTX.GL.W.0011.000000T0000Z-120213T0000Z/
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-
359 AM EST SUN FEB 12 2012

...GALE WARNING REMAINS IN EFFECT UNTIL 7 PM EST THIS EVENING...
...HEAVY FREEZING SPRAY WARNING IS CANCELLED...

THE NATIONAL WEATHER SERVICE IN DETROIT/PONTIAC HAS CANCELLED THE
HEAVY FREEZING SPRAY WARNING. A GALE WARNING REMAINS IN EFFECT
UNTIL 7 PM EST THIS EVENING. 

* WIND AND WAVES: DURING THE GALE WARNING...EXPECT SUSTAINED 
  WINDS UP TO 28 KNOTS FROM THE NORTHWEST WITH GUSTS UP TO 35 
  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 SUNDAY 
  WITH THE LARGEST WAVES EXPECTED AROUND 3 AM EST SUNDAY. 

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.

&&

$$

LHZ421-441-122130-
/O.CAN.KDTX.UP.W.0001.000000T0000Z-120212T1200Z/
/O.EXT.KDTX.SC.Y.0013.000000T0000Z-120213T0900Z/
OUTER SAGINAW BAY SW OF ALABASTER TO PORT AUSTIN MI TO INNER
SAGINAW BAY-PORT AUSTIN TO HARBOR BEACH MI-
359 AM EST SUN FEB 12 2012

...SMALL CRAFT ADVISORY NOW IN EFFECT UNTIL 4 AM EST MONDAY...
...HEAVY FREEZING SPRAY WARNING IS CANCELLED...

THE NATIONAL WEATHER SERVICE IN DETROIT/PONTIAC HAS CANCELLED THE
HEAVY FREEZING SPRAY WARNING. THE SMALL CRAFT ADVISORY IS NOW IN
EFFECT UNTIL 4 AM EST MONDAY. 

* WIND AND WAVES: DURING THE SMALL CRAFT ADVISORY...EXPECT 
  SUSTAINED WINDS UP TO 25 KNOTS FROM THE WEST WITH GUSTS UP TO 
  30 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 SUNDAY 
  WITH THE LARGEST WAVES EXPECTED AROUND 3 AM EST SUNDAY. 

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.

&&

$$

LHZ442-443-122130-
/O.CAN.KDTX.UP.W.0001.000000T0000Z-120212T1200Z/
/O.CON.KDTX.SC.Y.0013.000000T0000Z-120213T0000Z/
HARBOR BEACH TO PORT SANILAC MI-PORT SANILAC TO PORT HURON MI-
359 AM EST SUN FEB 12 2012

...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 7 PM EST THIS
EVENING...
...HEAVY FREEZING SPRAY WARNING IS CANCELLED...

THE NATIONAL WEATHER SERVICE IN DETROIT/PONTIAC HAS CANCELLED THE
HEAVY FREEZING SPRAY WARNING. A SMALL CRAFT ADVISORY REMAINS IN
EFFECT UNTIL 7 PM EST THIS EVENING. 

* WIND AND WAVES: DURING THE SMALL CRAFT ADVISORY...EXPECT 
  SUSTAINED WINDS UP TO 22 KNOTS FROM THE WEST WITH GUSTS UP TO 
  26 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 SUNDAY 
  WITH THE LARGEST WAVES EXPECTED AROUND 3 AM EST SUNDAY. 

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.

&&

$$

LHZ463-464-121000-
/O.CAN.KDTX.UP.W.0001.000000T0000Z-120212T1200Z/
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 AM EST SUN FEB 12 2012

...HEAVY FREEZING SPRAY WARNING IS CANCELLED...

THE NATIONAL WEATHER SERVICE IN DETROIT/PONTIAC HAS CANCELLED THE
HEAVY FREEZING SPRAY WARNING. 

$$
828 
WHUS73 KDTX 122015
MWWDTX

URGENT - MARINE WEATHER MESSAGE
NATIONAL WEATHER SERVICE DETROIT/PONTIAC MI
315 PM EST SUN FEB 12 2012

...GALES TO SUBSIDE LATER THIS EVENING...

.THE GALE WARNING FOR THE OPEN WATERS FOR HARBOR BEACH AND POINTS 
NORTH IS STILL SET TO EXPIRE ON SCHEDULE THIS EVENING AS THE 
PRESSURE GRADIENT RELAXES BEHIND THE PASSING SHORTWAVE ALOFT. SMALL 
CRAFT ADVISORIES FOR THE NEARSHORE ZONES WILL EXPIRE FROM SOUTH TO 
NORTH THIS EVENING AS SUBSIDING WINDS WILL TURN TO THE WEST AND 
ALLOW WAVE HEIGHTS TO FALL BELOW 5 FEET. WINDS WILL TURN TO THE 
SOUTHWEST ON MONDAY WITH BREEZY CONDITIONS PERSISTING THROUGH MONDAY 
NIGHT. TUESDAY WILL FEATURE DIMINISHING WINDS AS THE PRESSURE 
GRADIENT EASES BEHIND A PASSING LOW PRESSURE SYSTEM. AFTER 
TODAY...NO MAJOR WIND EVENTS ARE FORECAST FOR THE NEXT SEVEN DAYS.

LHZ363-462-130000-
/O.CON.KDTX.GL.W.0012.000000T0000Z-120213T0000Z/
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 SUN FEB 12 2012

...GALE WARNING REMAINS IN EFFECT UNTIL 7 PM EST THIS EVENING...

A GALE WARNING REMAINS IN EFFECT UNTIL 7 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 33 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 5 PM EST SUNDAY 
  WITH THE LARGEST WAVES EXPECTED AROUND 3 PM EST SUNDAY. 

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.

&&

$$

LHZ361-362-130000-
/O.CON.KDTX.GL.W.0011.000000T0000Z-120213T0000Z/
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-
315 PM EST SUN FEB 12 2012

...GALE WARNING REMAINS IN EFFECT UNTIL 7 PM EST THIS EVENING...

A GALE WARNING REMAINS IN EFFECT UNTIL 7 PM EST THIS EVENING. 

* 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 9 FEET WITH A 
  POTENTIAL MAXIMUM WAVE HEIGHT OF 13 FEET. 

* TIMING: THE MAXIMUM WINDS ARE EXPECTED AROUND 5 PM EST SUNDAY 
  WITH THE LARGEST WAVES EXPECTED AROUND 6 PM EST SUNDAY. 

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.

&&

$$

LHZ421-441-130815-
/O.CON.KDTX.SC.Y.0013.000000T0000Z-120213T0900Z/
OUTER SAGINAW BAY SW OF ALABASTER TO PORT AUSTIN MI TO INNER
SAGINAW BAY-PORT AUSTIN TO HARBOR BEACH MI-
315 PM EST SUN FEB 12 2012

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

A SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 4 AM EST MONDAY. 

* WIND AND WAVES: DURING THE SMALL CRAFT ADVISORY...EXPECT 
  SUSTAINED WINDS UP TO 22 KNOTS FROM THE WEST WITH GUSTS UP TO 
  29 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 5 PM EST SUNDAY 
  WITH THE LARGEST WAVES EXPECTED AROUND 3 PM EST SUNDAY. 

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.

&&

$$

LHZ442-443-130000-
/O.CON.KDTX.SC.Y.0013.000000T0000Z-120213T0000Z/
HARBOR BEACH TO PORT SANILAC MI-PORT SANILAC TO PORT HURON MI-
315 PM EST SUN FEB 12 2012

...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 7 PM EST THIS
EVENING...

A SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 7 PM EST THIS
EVENING. 

* WIND AND WAVES: DURING THE SMALL CRAFT ADVISORY...EXPECT 
  SUSTAINED WINDS UP TO 20 KNOTS FROM THE WEST WITH GUSTS UP TO 
  25 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 5 PM EST SUNDAY 
  WITH THE LARGEST WAVES EXPECTED AROUND 3 PM EST SUNDAY. 

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.

&&

$$
511 
WHUS73 KDTX 130225
MWWDTX

URGENT - MARINE WEATHER MESSAGE
NATIONAL WEATHER SERVICE DETROIT/PONTIAC MI
925 PM EST SUN FEB 12 2012

...WINDS AND WAVES CONTINUE TO SLOWLY SUBSIDE OVERNIGHT...

.THE GALE WARNING FOR THE OPEN WATERS FOR HARBOR BEACH AND POINTS 
NORTH EXPIRED THIS EVENING AS THE PRESSURE GRADIENT RELAXES BEHIND
THE PASSING SHORTWAVE ALOFT. SMALL CRAFT ADVISORIES HAVE ALSO
EXPIRED ACROSS THE SOUTHERN NEARSHORE ZONES...HOWEVER THEY REMAIN
IN EFFECT ACROSS THE TIP OF THE THUMB WITH CONTINUED GUSTY WINDS
AND HIGHER WAVES. WINDS WILL TURN TO THE SOUTHWEST ON MONDAY WITH
BREEZY CONDITIONS PERSISTING THROUGH MONDAY NIGHT. TUESDAY WILL
FEATURE DIMINISHING WINDS AS THE PRESSURE GRADIENT EASES BEHIND A
PASSING LOW PRESSURE SYSTEM. AFTER TONIGHT...NO MAJOR WIND EVENTS
ARE FORECAST FOR THE NEXT SEVEN DAYS.

LHZ421-441-130900-
/O.CON.KDTX.SC.Y.0013.000000T0000Z-120213T0900Z/
OUTER SAGINAW BAY SW OF ALABASTER TO PORT AUSTIN MI TO INNER
SAGINAW BAY-PORT AUSTIN TO HARBOR BEACH MI-
925 PM EST SUN FEB 12 2012

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

A SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 4 AM EST MONDAY. 

* WIND AND WAVES: DURING THE SMALL CRAFT ADVISORY...EXPECT 
  SUSTAINED WINDS UP TO 22 KNOTS FROM THE WEST WITH GUSTS UP TO 
  26 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 MONDAY 
  WITH THE LARGEST WAVES EXPECTED AROUND 9 PM EST SUNDAY. 

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.

&&

$$

KURIMSKI
083 
WHUS73 KDTX 130840
MWWDTX

URGENT - MARINE WEATHER MESSAGE
NATIONAL WEATHER SERVICE DETROIT/PONTIAC MI
340 AM EST MON FEB 13 2012

...WINDS AND WAVES CONTINUE TO SUBSIDE EARLY THIS MORNING...

.AN EMERGING SOUTHWEST FLOW WILL REMAIN GUSTY TODAY IN ADVANCE 
OF AN APPROACHING MID LEVEL TROUGH.  SOUTHWEST WINDS WILL 
DIMINISH ON TUESDAY AS THE GRADIENT EASES BEHIND THIS SYSTEM.  
WEAKER SOUTHWEST FLOW WILL MAINTAIN STABLE CONDITIONS THROUGH 
WEDNESDAY.  A STRENGTHENING LOW PRESSURE SYSTEM WILL TRACK THROUGH 
THE GREAT LAKES ON THURSDAY.  A PERIOD OF STRONGER NORTHWEST WINDS 
MAY ACCOMPANY THE COLDER AIR WRAPPING IN BEHIND THIS SYSTEM 
THURSDAY NIGHT AND FRIDAY.

LHZ421-441-130945-
/O.EXP.KDTX.SC.Y.0013.000000T0000Z-120213T0900Z/
OUTER SAGINAW BAY SW OF ALABASTER TO PORT AUSTIN MI TO INNER
SAGINAW BAY-PORT AUSTIN TO HARBOR BEACH MI-
340 AM EST MON FEB 13 2012

...SMALL CRAFT ADVISORY WILL EXPIRE AT 4 AM EST EARLY THIS
MORNING...

THE SMALL CRAFT ADVISORY WILL EXPIRE AT 4 AM EST EARLY THIS
MORNING. 

* WIND AND WAVES: DURING THE SMALL CRAFT ADVISORY...EXPECT 
  SUSTAINED WINDS UP TO 19 KNOTS FROM THE WEST WITH GUSTS UP TO 
  21 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 MONDAY 
  WITH THE LARGEST WAVES EXPECTED AROUND 3 AM EST MONDAY. 

$$

What forecasters said that day

The local office's own words before this small craft advisory went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

NWS Detroit, MI wrote its last area forecast discussion before this small craft advisory went out at Feb 10, 4:05 PM EST, 10 minutes earlier.

Area forecast discussion, Feb 10, 4:05 PM EST, 10 minutes before
AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE DETROIT/PONTIAC MI
405 PM EST FRI FEB 10 2012

.SHORT TERM...THROUGH TONIGHT

SHORTWAVE ENERGY CONTINUES TO DROP THROUGH THE UPPER MIDWEST AND
WESTERN GREAT LAKES THIS AFTERNOON...AS IT ROTATES DOWN AROUND AN
UPPER VORTEX OVER HUDSON BAY AND NORTHERN QUEBEC. SHORTWAVE
TROUGH AXIS IS EXPECTED TO PIVOT ACROSS MICHIGAN TONIGHT...PUSHING
AN AREA OF LOW PRESSURE ACROSS SOUTHEAST MICHIGAN OUT AHEAD OF IT.
AN ASSOCIATED COLD FRONT WILL ALSO SWEEP ACROSS THE AREA AS THE LOW
WORKS ACROSS...PASSING SOUTH-SOUTHEAST ACROSS THE FORECAST AREA
BETWEEN 3PM AND MIDNIGHT.

LIGHT SNOW SPREAD INTO THE LATE THIS MORNING AS LOW-LEVEL MOISTURE
ADVECTION BEGAN TO COMBINE WITH LIGHT ISENTROPIC ASCENT AHEAD OF
THE APPROACHING LOW. SOUTHWESTERLY FLOW OFF LAKE MICHIGAN ALSO
PROVIDED AN EXTRA DOSE OF MOISTURE AND INSTABILITY. OUT TO OUR
WEST...THE COLD FRONT HAS ALREADY TRAVELED ACROSS MUCH OF LAKE
MICHIGAN...AND WAS ALIGNED ROUGHLY BETWEEN A MUSKEGON TO WAUKEGAN
(WI) LINE AT AROUND 3PM. THIS SHOULD CUT OFF THE MOISTURE FEED
FROM LAKE MICHIGAN INTO OUR AREA SOON. WE WILL ALSO START TO SEE A
TRANSITION IN FORCING MECHANISM OVER THE NEXT SEVERAL HOURS AS THE
LOW CROSSES OVERHEAD AND THE FRONT APPROACHES. THE COLD FRONT WILL
WORK DOWN ACROSS THE AREA THIS EVENING. NAM/GFS CROSS SECTIONS
SHOW STRONG FGEN FORCING IN THE LOW LEVELS WITH LOW STABILITY
WITHIN AND ABOVE THIS LAYER. THIS SHOULD HELP PROVIDE BURSTS OF
INTENSE SNOWFALL THIS EVENING JUST AHEAD OF AND ALONG THE
FRONT...WHICH WILL LIKELY CAUSE VISIBILITIES TO FALL TO ABOUT 1/2
MILE AT TIMES. SOME UNCERTAINTY EXISTS REGARDING DURATION OF
SNOWFALL AND EVEN WITH AMOUNTS AS THE FRONT...AND AREA OF
DEFORMATION...START TO TAKE ON A MORE SOUTHWEST TO NORTHEAST
ORIENTATION AS THE LOW MOVES ACROSS THE AREA. PIVOT POINT LOOKS TO
OCCUR BETWEEN M-59 AND THE SAGINAW VALLEY...AND THIS IS WHERE THE
HIGHEST SNOWFALL TOTALS ARE EXPECTED. SNOW TOTALS BEFORE MIDNIGHT
LOOK TO RANGE BETWEEN 1 AND 3 INCHES FOR MOST AREAS...WITH
LOCATIONS BETWEEN M-59 AND SAGINAW LOOKING TO BE TOWARDS THE
HIGHER END OF THAT RANGE.

AREA OF DEFORMATION LOOKS TO MOVE OUT OF THE AREA CLOSE TO
MIDNIGHT...HOWEVER LAKE EFFECT PROCESSES SHOULD THEN KICK IN WITH
NORTHERLY FLOW OFF LAKE HURON. ALTHOUGH MUCH DRIER AIR WILL BE
ADVECTING INTO THE AREA BEHIND THE FRONT...A VERY LOW ALTITUDE DGZ
AND LINGERING LOW-LEVEL MOISTURE WITHIN THIS LAYER SHOULD ALLOW
SHOWERS TO DEVELOP. LAKE EFFECT PROCESSES LOOK TO GENERATE
ADDITIONAL SNOWFALL BETWEEN MIDNIGHT AND 7 AM...WITH AN ADDITIONAL
INCH OF SNOW POSSIBLE OVER THE THUMB. STRONG FLOW SHOULD ALLOW LAKE
EFFECT BANDS TO CARRY FAR ENOUGH INLAND TO SPREAD LIGHT SNOW SHOWERS
OVER MUCH OF SOUTHEAST MICHIGAN HOWEVER.

OTHER ISSUE TONIGHT BESIDES THE SNOW WILL BE THE ARRIVAL OF A VERY
COLD AIRMASS. MIN TEMPS ARE EXPECTED TO FALL BETWEEN 10 AND 15
DEGREES FOR MOST OF THE AREA. GUSTY WINDS WILL DEVELOP BEHIND THE
FRONT...WITH GUSTS TO 30 MPH LOWERING WIND CHILL VALUES TO BETWEEN 0
AND -10 AFTER MIDNIGHT.

&&

.LONG TERM... SATURDAY THROUGH FRIDAY

MID LEVEL MOISTURE WILL PEEL AWAY TO THE EAST QUICKLY AFTER SUNRISE
SATURDAY MORNING AND THE LOW LEVEL WIND WILL BACK TOWARD THE
NORTHWEST. THIS WILL OCCUR AS THE FRONT AND LOW PRESSURE SYSTEM
EXIT TOWARD THE ATLANTIC COAST AND WILL HELP SHUT DOWN LAKE
EFFECT SNOW IN THE THUMB. AFTER THAT, THE STORY WILL BE THE BRISK
AND COLD CONDITIONS THAT WILL SETTLE IN WITH THE ARCTIC AIR MASS.
THE LOW LEVEL THERMAL TROUGH WILL BE FIRMLY IN PLACE BY AFTERNOON
WITH MODEL SOUNDINGS SUGGESTING MAX TEMPS WILL STRUGGLE TO REACH
THE 20S. SOME MODIFICATION BY THE LAKE AGGREGATE AND SOME
STRENGTHENING FEBRUARY SUN COULD COMPENSATE AS LOW LEVEL COLD
ADVECTION BECOMES NEUTRAL BUT THE SURFACE HEATING WILL BE MUTED BY
SNOW COVER AND LIKELY JUST ADD SOME CLOUDS AND GENERATE SOME
FLURRIES. IN THE END, WIND CHILL IN THE SINGLE DIGITS WILL FEEL
HARSH COMPARED TO WHAT WE HAVE ALL GROWN ACCUSTOMED THIS SEASON.
THE COLD TEMPERATURES WILL PERSIST INTO SATURDAY NIGHT AS LOW
LEVEL FLOW BACKS MORE TOWARD THE WEST. IT WILL BE BROADLY CYCLONIC
AND WILL REINFORCE THE COLD AIR IN THE LOW LEVELS. MODEL OUTPUT
LOOKS REASONABLE WITH A BULLISH DEPICTION OF STRATUS COVERAGE AS
THE MAIN RESULT OF THE COLDER AIR. THE CLOUDS, ALONG WITH A 10 TO
20 KNOT GRADIENT FLOW, WILL KEEP THE BOTTOM FROM DROPPING OUT OF
TEMPERATURES BY SUNRISE SUNDAY MORNING, BUT WIND CHILL DOWN AROUND
ZERO WILL AGAIN CARRY THE MOST IMPACT.

DRY CONDITIONS WILL BE ENSURED SUNDAY THROUGH MONDAY BY THE
PROGRESSION OF THE LONG WAVE TROUGH OUT OF THE GREAT LAKES REPLACED
BY AN UPPER RIDGE AND SURFACE HIGH PRESSURE SLIDING INTO THE OHIO
VALLEY. LOW TEMPERATURES SUNDAY NIGHT WILL ONLY BE A DEGREE OR TWO
WARMER AS RADIATIONAL COOLING POTENTIAL WILL BE MUCH GREATER UNDER
SOME OPEN SKY AND WITH POTENTIAL FOR WEAK GRADIENT WIND TO DECOUPLE
OVER SNOW COVERED GROUND. A MORE CONVINCING TEMPERATURE REBOUND IS
LIKELY MONDAY INTO TUESDAY. SOLUTIONS ARE CONSISTENT ACROSS MODEL
RUNS SHOWING THIS BEING MORE A RESULT OF THE ARCTIC AIR DEPARTURE
THAN ANY GREAT AMOUNT OF SOUTHWEST FLOW.

THE DEVELOPMENT OF A SPLIT FLOW CHARACTER IN THE LARGER SCALE UPPER
AIR PATTERN WILL INTRODUCE FORECAST CHALLENGES DURING THE MID WEEK
PERIOD. THIS WILL BE TIED TO THE TIMING AND TRACK OF SHORT WAVES IN
BOTH THE NORTHERN AND SOUTHERN STREAMS AS THEY MOVE EAST OF THE
MISSISSIPPI AND INTO THE GREAT LAKES. THE FIRST SUCH WAVE IS SHOWN
BY THE GLOBAL MODELS TO BE MORE OF SOUTHERN STREAM SYSTEM ENTERING
THE AREA BY TUESDAY WITH A TRANSITION TO MORE OF A NORTHERN STREAM
INFLUENCE AFTER THAT. THE TUESDAY SYSTEM WILL BRING SOME GULF
MODIFIED AIR NORTHWARD INTO THE GREAT LAKES THAT WILL HELP WITH A
PATTERN OF SNOW WHICH IS SHOWN WITH GOOD AGREEMENT IN THE MODEL DATA
TO BE ON THE LIGHT SIDE IN TERMS OF POTENTIAL ACCUMULATION. AFTER
THAT, THE TENDENCY FOR A TRANSITION TO MORE OF NORTHERN STREAM
INFLUENCE IN THE GREAT LAKES WILL BE FOSTERED BY HEIGHT FALLS IN THE
SOUTHERN STREAM LAGGING OVER THE FOUR CORNERS REGION. THERE IS SOME
STABILITY IN RECENT MODEL SOLUTIONS IN THAT AREA WHICH ADDS SOME
CONFIDENCE TO THE TRANSITION TO GREATER NORTHERN STREAM INFLUENCE IN
THE GREAT LAKES. THAT TRANSITION WILL BRING LOW PREDICTABILITY ON
THE SHORT WAVE/CLIPPER FEATURES EXPECTED TO MOVE THROUGH THE GREAT
LAKES DURING THE SECOND HALF OF THE WEEK BUT THE LARGER SCALE
PATTERN TYPICALLY SUPPORTS JUST LIGHT PRECIPITATION AMOUNTS WITH NO
BIG INTRUSION OF ARCTIC AIR.

&&

.MARINE...

THE COLD FRONT MOVING THROUGH THE GREAT LAKES TODAY WILL GENERATE A
FEW HOURS OF GALE FORCE WINDS ON THE SOUTH END OF LAKE HURON TONIGHT
THROUGH SATURDAY MORNING. SUPPORT FOR THE HEADLINE IS FOUND IN
OBSERVATIONS OF GALE FORCE WIND GUSTS OVER THE SOUTH END OF LAKE
MICHIGAN DURING THE LATE AFTERNOON HOURS WHICH WILL CARRY EASTWARD
FOLLOWING A WAVE OF LOW PRESSURE ALONG THE FRONT. OUTSIDE OF THE
GALE WARNING, SMALL CRAFT ADVISORIES WILL BE IN EFFECT FOR ALL OTHER
MARINE AREAS.

STRONG HIGH PRESSURE WILL SETTLE OVER THE PLAINS AND MIDWEST DURING
SATURDAY AND SUNDAY AS ANOTHER SURGE OF ARCTIC AIR MOVES OVER THE
GREAT LAKES. THE STEEP PRESSURE GRADIENT WILL MAINTAIN POTENTIAL FOR
NORTHWEST GALES OVER THE NORTH HALF OF LAKE HURON OPEN WATERS
THROUGH SUNDAY BEFORE A MODERATING TREND BEGINS MONDAY. A GALE WATCH
IS IN EFFECT FOR THE NORTH LAKE HURON OPEN WATERS THROUGH SUNDAY
WITH SMALL CRAFT ADVISORIES FOR THE SOUTHERN NEARSHORE WATERS DUE TO
HIGH WAVES.

&&

.AVIATION...ISSUED 1200 PM EST FRI FEB 10 2012

//DISCUSSION...

MOST SITES NOW SEEING LIGHT SNOW AHEAD OF AN APPROACHING COLD FRONT.
MBS AREA LOOKS TO EXPERIENCE THE WORST VSBYS WITH THIS SNOW
EVENT...DROPPING TO 1/2SM AT TIMES. SITES SOUTH OF PTK WILL LIKELY
DROP TO 2SM -SN...WITH ONLY ISOLATED WORSE RESTRICTIONS. SOUTHWEST
WINDS HAVE USHERED IN SOME MOISTURE FROM BOTH THE MID-MISSISSIPPI
VALLEY AND LAKE MICHIGAN. THAT AND SOME WEAK ASCENT FROM UNSTABLE
CONDITIONS OVER THE LAKE ARE LEADING TO A SLIGHTLY STRONGER AND
EARLIER-HITTING SNOW EVENT. HAVE TIMED OUT THE BEST CHANCES FOR
MODERATE SNOW AND ALSO HIGH WIND GUSTS IN THE TAFS.

FOR DTW...MVFR CONDITIONS WILL PERSIST THROUGH MOST OF TODAY. WORST
SNOW APPEARS TO BE AROUND 00-05Z THIS EVENING...AND WILL LIKELY ONLY
DROP TO 2SM WITH OCCL 1SM. SNOW RATES WILL LIKELY TOP OUT NEAR 1/2 INCH
PER HOUR WITH TOTAL ACCUMS UP TO 2 INCHES STILL EXPECTED.

//DTW THRESHOLD THREATS...

* HIGH CONFIDENCE IN CEILING BELOW 5000 FEET THROUGH TONIGHT.

* HIGH CONFIDENCE IN SNOW AS PRECIPITATION TYPE.

&&

.DTX WATCHES/WARNINGS/ADVISORIES...

MI...NONE.

LAKE HURON...
     GALE WARNING...LHZ363-LHZ421-LHZ441-LHZ462...UNTIL 7 AM SATURDAY.

     SMALL CRAFT ADVISORY...OUTER SAGINAW BAY AND THE NEARSHORE WATERS
     FROM PORT AUSTIN TO HARBOR BEACH...FROM 7 AM SATURDAY TO 7 PM
     SUNDAY.

     GALE WARNING...LHZ442-LHZ443-LHZ463-LHZ464...UNTIL 7 PM SATURDAY.

     SMALL CRAFT ADVISORY...NEARSHORE WATERS FROM HARBOR BEACH TO PORT
     HURON...FROM 7 PM SATURDAY TO 7 PM SUNDAY.

     SMALL CRAFT ADVISORY...INNER SAGINAW BAY...UNTIL 7 AM SATURDAY.

     GALE WATCH...LHZ361-LHZ362...FROM 7 PM SATURDAY TO 7 PM SUNDAY.

LAKE ST CLAIR...
     SMALL CRAFT ADVISORY...UNTIL 7 PM SATURDAY.

MI WATERS OF LAKE ERIE...
     SMALL CRAFT ADVISORY...UNTIL 7 PM SATURDAY.

&&

SHORT TERM...HLO
LONG TERM....BT
MARINE.......HLO/BT
AVIATION.....HLO

YOU CAN OBTAIN YOUR LATEST NATIONAL WEATHER SERVICE FORECASTS ONLINE
AT WWW.WEATHER.GOV/DETROIT (ALL LOWER CASE).
Hazardous weather outlook, Feb 10, 11:49 AM EST, 4 hours 26 minutes before
HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE DETROIT/PONTIAC MI
1149 AM EST FRI FEB 10 2012

MIZ047>049-053>055-060>063-068>070-075-076-082-083-111700-
MIDLAND-BAY-HURON-SAGINAW-TUSCOLA-SANILAC-SHIAWASSEE-GENESEE-LAPEER-
ST. CLAIR-LIVINGSTON-OAKLAND-MACOMB-WASHTENAW-WAYNE-LENAWEE-MONROE-
1149 AM EST FRI FEB 10 2012

THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF SOUTHEAST
MICHIGAN.

.DAY ONE...THIS AFTERNOON AND TONIGHT

A WIDESPREAD AREA OF SNOWFALL WILL DEVELOP AND MOVE ACROSS
SOUTHEAST MICHIGAN THIS AFTERNOON AND EVENING. ACCUMULATIONS ARE
EXPECTED TO RANGE BETWEEN 2 AND 4 INCHES ALONG AND NORTH OF THE
I-69 CORRIDOR...AND BETWEEN 1 AND 3 INCHES SOUTH OF THERE.

.DAYS TWO THROUGH SEVEN...SATURDAY THROUGH THURSDAY

NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME.

.SPOTTER INFORMATION STATEMENT...

SPOTTER ACTIVATION WILL NOT BE NEEDED TODAY AND TONIGHT...HOWEVER
SNOWFALL REPORTS OF GREATER THAN ONE INCH...AND STORM TOTALS...WOULD
BE APPRECIATED.

LCZ422-423-460-LEZ444-LHZ361>363-421-422-441>443-462>464-111700-
ST. CLAIR RIVER-DETROIT RIVER-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-
1149 AM EST FRI FEB 10 2012

THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF LAKE ERIE...LAKE
HURON AND LAKE ST CLAIR.

.DAY ONE...THIS AFTERNOON AND TONIGHT

SMALL CRAFT ADVISORIES ARE IN EFFECT THROUGH SUNDAY MORNING FOR
THE NEARSHORE WATERS OF LAKE HURON INCLUDING OUTER SAGINAW BAY.
A GALE WATCH IS IN EFFECT FOR THE OPEN WATERS OF LAKE HURON
SATURDAY AFTERNOON THROUGH SUNDAY MORNING. PLEASE REFER TO THE
LATEST MARINE FORECAST FOR MORE DETAILS.

.DAYS TWO THROUGH SEVEN...SATURDAY THROUGH THURSDAY

NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME.

.SPOTTER INFORMATION STATEMENT...

SPOTTER ACTIVATION WILL NOT BE NEEDED TODAY AND TONIGHT.

HLO/MR

YOU CAN OBTAIN YOUR LATEST NATIONAL WEATHER SERVICE FORECASTS ONLINE
AT WWW.WEATHER.GOV/DETROIT (ALL LOWER CASE).

In the hours before

Special weather statement, Feb 10, 11:42 AM EST, 4 hours 33 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE DETROIT/PONTIAC MI
1142 AM EST FRI FEB 10 2012

MIZ047>049-053>055-060>063-068>070-101900-
MIDLAND-BAY-HURON-SAGINAW-TUSCOLA-SANILAC-SHIAWASSEE-GENESEE-
LAPEER-ST. CLAIR-LIVINGSTON-OAKLAND-MACOMB-
INCLUDING THE CITIES OF...MIDLAND...BAY CITY...BAD AXE...
SAGINAW...CARO...SANDUSKY...OWOSSO...FLINT...LAPEER...
PORT HURON...HOWELL...PONTIAC...WARREN
1142 AM EST FRI FEB 10 2012

...LIGHT SNOW THROUGH THE EARLY AFTERNOON...

LIGHT SNOW WILL CONTINUE TO AFFECT THE AREA THROUGH THE EARLY
AFTERNOON TODAY AS MOISTURE SPREADS INTO THE REGION AHEAD OF A
COLD FRONT. SNOW AMOUNTS THROUGH 200 PM SHOULD RANGE FROM A
DUSTING TO A FEW TENTHS OF AN INCH. MORE MODERATE SNOWFALL IS THEN
EXPECTED TO SPREAD INTO THE AREA AFTER 200 PM AS THE COLD FRONT
BEGINS TO DROP ACROSS THE AREA. ACCUMULATIONS FROM LATE THIS
AFTERNOON THROUGH MIDNIGHT ARE EXPECTED TO RANGE BETWEEN 2 AND 4
INCHES ALONG AND NORTH OF THE I-69 CORRIDOR AND BETWEEN 1 AND 3
INCHES SOUTH OF THERE. MOTORISTS ARE URGED TO USE CAUTION WHILE
TRAVELING TODAY...ESPECIALLY THIS EVENING WHEN SNOW WILL BE THE HEAVIEST.

HLO
Special weather statement, Feb 10, 3:47 PM EST, 28 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE DETROIT/PONTIAC MI
347 PM EST FRI FEB 10 2012

MIZ047>049-053>055-060>062-102300-
MIDLAND-BAY-HURON-SAGINAW-TUSCOLA-SANILAC-SHIAWASSEE-GENESEE-
LAPEER-
INCLUDING THE CITIES OF...MIDLAND...BAY CITY...BAD AXE...
SAGINAW...CARO...SANDUSKY...OWOSSO...FLINT...LAPEER
347 PM EST FRI FEB 10 2012

...ACCUMULATING SNOWFALL FOR THE EVENING COMMUTE...

SNOW WILL INCREASE IN INTENSITY BETWEEN 4PM AND 7PM TONIGHT AS A
STRONG COLD FRONT APPROACHES. MODERATE BURSTS OF SNOWFALL WILL
LIMIT VISIBILITIES TO AROUND 1/2 MILE AT TIMES BEFORE SNOW BEGINS
TO DECREASE IN INTENSITY AGAIN AROUND 10PM. TOTAL ACCUMULATIONS BY
LATE TONIGHT ARE EXPECTED TO RANGE BETWEEN 2 AND 3 INCHES.

MIZ063-068>070-075-076-082-083-102300-
ST. CLAIR-LIVINGSTON-OAKLAND-MACOMB-WASHTENAW-WAYNE-LENAWEE-
MONROE-
INCLUDING THE CITIES OF...PORT HURON...HOWELL...PONTIAC...
WARREN...ANN ARBOR...DETROIT...ADRIAN...MONROE
347 PM EST FRI FEB 10 2012

...ACCUMULATING SNOWFALL EXPECTED THIS EVENING...

LIGHT SNOWFALL WILL CONTINUE SPREAD INTO SOUTHEAST MICHIGAN THROUGH
THE LATE AFTERNOON AND VERY EARLY EVENING. SNOW AMOUNTS THROUGH
6PM ARE EXPECTED TO REMAIN BELOW ONE-HALF INCH. AN AREA OF MORE
MODERATE SNOW WILL THEN MOVE ACROSS THE AREA BETWEEN 6PM AND 10PM
AS A STRONG COLD FRONT APPROACHES. MODERATE BURSTS OF SNOWFALL WILL
LIMIT VISIBILITIES TO AROUND 1/2 MILE AT TIMES THIS EVENING BEFORE SNOW
BEGINS TO DECREASE IN INTENSITY AGAIN AROUND MIDNIGHT. TOTAL
ACCUMULATIONS BY LATE TONIGHT ARE EXPECTED TO RANGE BETWEEN 1 AND
3 INCHES.

HLO
Local storm report, Feb 10, 4:03 PM EST, 12 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE DETROIT/PONTIAC MI
403 PM EST FRI FEB 10 2012

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0330 PM     SNOW             5 W SAGINAW             43.42N 84.05W
02/10/2012  M1.3 INCH        SAGINAW            MI   CO-OP OBSERVER

            6 HOUR TOTAL

0400 PM     SNOW             SAGINAW                 43.42N 83.95W
02/10/2012  M1.5 INCH        SAGINAW            MI   TRAINED SPOTTER

            6 HOUR TOTAL

&&

ADODSON

The office that day

Everything else NWS Detroit, MI issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Feb 10, 3:51 AM ESTSmall Craft AdvisoryDTX35 hr
Feb 10, 4:15 PM ESTGale WarningDTX51 hr

Nearby

Small Craft Advisories in Michigan, 2012Every small craft advisory in 2012

Sources

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text.