635  
WHUS73 KDTX 291951  
MWWDTX  
 
URGENT - MARINE WEATHER MESSAGE  
NATIONAL WEATHER SERVICE DETROIT/PONTIAC MI  
351 PM EDT SAT APR 29 2017  
   
..NORTHEAST WINDS INTO TOMORROW
 
 
.UNSETTLED CONDITIONS THROUGH EARLY NEXT WEEK AS A STRONG LOW  
PRESSURE SYSTEM SLOWLY TRACKS THROUGH THE AREA. THE APPROACH OF  
THIS SYSTEM WILL ESTABLISH A LONG DURATION OF MODERATE NORTHEASTERLY  
WINDS LASTING THROUGH THE LATTER HALF OF THE WEEKEND. THE  
COMBINATION OF GUSTY CONDITIONS AND CORRESPONDING INCREASE IN WAVE  
HEIGHTS ACROSS THE WESTERN LAKE HURON BASIN WILL LEAD TO EXTENDED  
SMALL CRAFT ADVISORY CONDITIONS. WINDS TURN SOUTHERLY AND  
STRENGTHEN THROUGHOUT MONDAY IN ADVANCE OF A COLD FRONT. POTENTIAL  
FOR GUSTS UP TO 30 KNOTS FROM WESTERN LAKE ERIE TO SOUTHERN LAKE  
HURON DURING THIS TIME. WINDS THEN BECOME WESTERLY WITH THE FRONTAL  
PASSAGE ON TUESDAY. A WET AND ACTIVE PATTERN TONIGHT THROUGH EARLY  
MONDAY, WITH PERIODS OF HEAVY RAIN AND THUNDERSTORMS POSSIBLE.  
 
LHZ421-422-441-300800-  
/O.CON.KDTX.SC.Y.0034.000000T0000Z-170501T1000Z/  
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-  
351 PM EDT SAT APR 29 2017  
   
..SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 6 AM EDT MONDAY
 
 
* WIND AND WAVES: DURING THE SMALL CRAFT ADVISORY...EXPECT  
SUSTAINED WINDS UP TO 26 KNOTS FROM THE EAST 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 8 AM EDT SUNDAY  
WITH THE LARGEST WAVES EXPECTED AROUND 11 AM EDT 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.  
 

 
 

 
 
LEZ444-300800-  
/O.CON.KDTX.SC.Y.0034.000000T0000Z-170430T2000Z/  
MICHIGAN WATERS OF LAKE ERIE FROM DETROIT RIVER TO NORTH CAPE MI-  
351 PM EDT SAT APR 29 2017  
   
..SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 4 PM EDT SUNDAY
 
 
* WIND AND WAVES: DURING THE SMALL CRAFT ADVISORY...EXPECT  
SUSTAINED WINDS UP TO 20 KNOTS FROM THE NORTHEAST WITH GUSTS  
UP TO 24 KNOTS. THE LARGEST EXPECTED SIGNIFICANT WAVES WILL  
BE 3 FEET WITH A POTENTIAL MAXIMUM WAVE HEIGHT OF 4 FEET.  
 
* TIMING: THE MAXIMUM WINDS ARE EXPECTED AROUND 7 PM EDT  
SATURDAY WITH THE LARGEST WAVES EXPECTED AROUND 12 AM EDT  
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.  
 

 
 

 
 
LHZ442-300800-  
/O.CON.KDTX.SC.Y.0034.170430T0800Z-170430T2000Z/  
HARBOR BEACH TO PORT SANILAC MI-  
351 PM EDT SAT APR 29 2017  
 
...SMALL CRAFT ADVISORY REMAINS IN EFFECT FROM 4 AM TO 4 PM EDT  
SUNDAY...  
 
* WIND AND WAVES: DURING THE SMALL CRAFT ADVISORY...EXPECT  
SUSTAINED WINDS UP TO 22 KNOTS FROM THE EAST WITH GUSTS UP TO  
27 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 10 AM EDT SUNDAY  
WITH THE LARGEST WAVES EXPECTED AROUND 11 AM EDT 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.  
 

 
 

 
 
LHZ443-300800-  
/O.CON.KDTX.SC.Y.0034.000000T0000Z-170430T2000Z/  
PORT SANILAC TO PORT HURON MI-  
351 PM EDT SAT APR 29 2017  
   
..SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 4 PM EDT SUNDAY
 
 
* WIND AND WAVES: DURING THE SMALL CRAFT ADVISORY...EXPECT  
SUSTAINED WINDS UP TO 17 KNOTS FROM THE NORTHEAST WITH GUSTS  
UP TO 23 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 2 AM EDT SUNDAY  
WITH THE LARGEST WAVES EXPECTED AROUND 12 PM EDT 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.  
 

 
 

 
 
SF  
 
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