704  
WHUS73 KDTX 170802  
MWWDTX  
 
URGENT - MARINE WEATHER MESSAGE  
NATIONAL WEATHER SERVICE DETROIT/PONTIAC MI  
402 AM EDT TUE OCT 17 2017  
   
..STRONG SOUTHWEST WINDS TODAY
 
 
.SURFACE HIGH PRESSURE WILL BUILD IN ACROSS THE OHIO RIVER VALLEY AND  
SOUTHEASTERN US AS ANOTHER LOW PRESSURE SYSTEM TO OUR NORTH PASS  
THROUGH NORTHERN ONTARIO. MICHIGAN WILL BE PLACED IN BETWEEN THESE  
TWO SYSTEM AND IT ALLOW THE GRADIENT FLOW TO STRENGTHEN OUT OF THE  
SOUTHWEST TODAY. A LONG FETCH OF GUSTY WINDS OUT OF THE SOUTHWEST AT  
20-30 KNOTS WILL SET UP FOR MUCH OF LAKE HURON BASIN AND SAGINAW  
BAY. THESE WINDS SHOULD PERSIST OVER THE NEXT COUPLE OF DAYS AS  
GRADIENT WINDS WILL REMAIN ELEVATED WITHIN THIS REGIME. SMALL CRAFT  
ADVISORIES ARE IN EFFECT FOR SAGINAW BAY AND THE NEARSHORE WATERS OF  
LAKE HURON FROM PORT AUSTIN TO HARBOR BEACH.  
 
LHZ421-422-441-172200-  
/O.CON.KDTX.SC.Y.0067.000000T0000Z-171017T2200Z/  
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-  
402 AM EDT TUE OCT 17 2017  
 
...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 6 PM EDT THIS  
EVENING...  
 
* WIND AND WAVES: DURING THE SMALL CRAFT ADVISORY...EXPECT  
SUSTAINED WINDS OF 15-20 KNOTS FROM THE SOUTHWEST WITH GUSTS UP  
TO 25 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 11 AM EDT  
TUESDAY WITH THE LARGEST WAVES EXPECTED AROUND 11 AM EDT  
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.  
 

 
 

 
 
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