784  
WHUS73 KDTX 200809  
MWWDTX  
 
URGENT - MARINE WEATHER MESSAGE  
NATIONAL WEATHER SERVICE DETROIT/PONTIAC MI  
409 AM EDT SUN OCT 20 2019  
   
..GALES POSSIBLE MONDAY INTO MONDAY NIGHT
 
 
.TRANSIENT SURFACE HIGH PRESSURE WILL SUPPORT A BRIEF PERIOD OF LIGHT  
AIR OVER THE WATERS THIS AFTERNOON BEFORE DEEPENING OF UPSTREAM LOW  
PRESSURE FORCES A TRANSITION TO MODERATE EASTERLY TONIGHT. THE LOW  
IS FORECAST TO DEEPEN THROUGH MONDAY SUPPORTING A TRANSITION TO  
UNIFORMLY STRONG SOUTHEAST FLOW WITH GUSTS TO GALES POSSIBLE BY  
MONDAY AFTERNOON. THE RELATIVELY STABLE SOUTHEAST FETCH WILL  
INITIALLY LIMIT WIND GUST POTENTIAL PRIOR TO MORE WIDESPREAD GUSTS  
TO GALES AS COLD AIR INFILTRATES LATER MONDAY NIGHT.  
 
LHZ361-362-202015-  
/O.CON.KDTX.GL.A.0020.191021T1800Z-191022T0800Z/  
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-  
409 AM EDT SUN OCT 20 2019  
 
...GALE WATCH REMAINS IN EFFECT FROM MONDAY AFTERNOON THROUGH  
LATE MONDAY NIGHT...  
 
* WIND AND WAVES: DURING THE GALE WATCH, EXPECT SUSTAINED WINDS  
UP TO 32 KNOTS FROM THE EAST WITH GUSTS UP TO 37 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 EDT MONDAY  
WITH THE LARGEST WAVES EXPECTED AROUND 10 PM EDT MONDAY.  
 
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.  
 

 
 

 
 
LHZ363-462>464-202015-  
/O.CON.KDTX.GL.A.0020.191021T1800Z-191022T0800Z/  
LAKE HURON FROM STURGEON POINT TO ALABASTER MI BEYOND 5NM OFF  
SHORE-  
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-  
409 AM EDT SUN OCT 20 2019  
 
...GALE WATCH REMAINS IN EFFECT FROM MONDAY AFTERNOON THROUGH  
LATE MONDAY NIGHT...  
 
* WIND AND WAVES: DURING THE GALE WATCH, EXPECT SUSTAINED WINDS  
UP TO 30 KNOTS FROM THE SOUTHEAST WITH GUSTS UP TO 33 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 EDT MONDAY  
WITH THE LARGEST WAVES EXPECTED AROUND 11 PM EDT MONDAY.  
 
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.  
 

 
 

 
 
LHZ421-422-441>443-202015-  
/O.CON.KDTX.GL.A.0020.191021T1800Z-191022T0800Z/  
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-  
409 AM EDT SUN OCT 20 2019  
 
...GALE WATCH REMAINS IN EFFECT FROM MONDAY AFTERNOON THROUGH  
LATE MONDAY NIGHT...  
 
* WIND AND WAVES: DURING THE GALE WATCH, EXPECT SUSTAINED WINDS  
UP TO 27 KNOTS FROM THE SOUTH 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 11 PM EDT MONDAY  
WITH THE LARGEST WAVES EXPECTED AROUND 9 PM EDT MONDAY.  
 
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.  
 

 
 

 
 
CB  
 
CLICK HERE TO GO TO PREVIOUS BULLETINS.

The Nexlab MI Page Main Text Page