Gale Warning 12, NWS Detroit, MI

919 
WHUS73 KDTX 010907
MWWDTX

URGENT - MARINE WEATHER MESSAGE
NATIONAL WEATHER SERVICE DETROIT/PONTIAC MI
407 AM EST WED MAR 1 2017

...GALES DEVELOPING TODAY AND CONTINUING TONIGHT...

.A SERIES OF LOW PRESSURE SYSTEMS WITH SHOWERS AND THUNDERSTORMS WILL 
TRACK NORTHEAST ALONG A STATIONARY FRONT ACROSS CENTRAL LAKE HURON 
TODAY. WINDS WILL BACK TO THE NORTH DURING THE AFTERNOON BEHIND THE 
LOWS DEPARTURE AND INCREASE TO GALE FORCE GUSTS TO 40 KNOTS THROUGH 
THURSDAY MORNING. RAIN SHOWERS WITH THIS SYSTEM WILL CHANGE TO LAKE 
EFFECT SNOW SHOWERS. NORTHWESTERLY FLOW WILL LINGER THROUGH THE END 
OF THE WEEK ACROSS THE LAKES THEN FOLLOWED BY A GRADUAL INCREASE IN 
SOUTHERLY FLOW AND A WARMING TREND FOR THE WEEKEND.

LHZ361>363-441-442-462-463-012130-
/O.UPG.KDTX.GL.A.0013.170301T1500Z-170302T0900Z/
/O.EXB.KDTX.GL.W.0012.170301T1500Z-170302T0900Z/
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-PORT AUSTIN TO HARBOR BEACH MI-
HARBOR BEACH TO PORT SANILAC 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-
407 AM EST WED MAR 1 2017

...GALE WARNING IN EFFECT FROM 10 AM THIS MORNING TO 4 AM EST
THURSDAY...

THE NATIONAL WEATHER SERVICE IN DETROIT/PONTIAC HAS ISSUED A GALE
WARNING...WHICH IS IN EFFECT FROM 10 AM THIS MORNING TO 4 AM EST
THURSDAY. 

* WIND AND WAVES: DURING THE GALE WARNING...EXPECT SUSTAINED 
  WINDS UP TO 30 KNOTS FROM THE NORTHWEST WITH GUSTS UP TO 39 
  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 
  WEDNESDAY WITH THE LARGEST WAVES EXPECTED AROUND 1 AM EST 
  THURSDAY. 

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.

&&

$$

LHZ443-464-012130-
/O.EXB.KDTX.GL.W.0012.170301T1500Z-170302T0900Z/
PORT SANILAC TO PORT HURON MI-
LAKE HURON FROM PORT SANILAC TO PORT HURON BEYOND 5NM OFF SHORE-
407 AM EST WED MAR 1 2017

...GALE WARNING IN EFFECT FROM 10 AM THIS MORNING TO 4 AM EST
THURSDAY...

THE NATIONAL WEATHER SERVICE IN DETROIT/PONTIAC HAS ISSUED A GALE
WARNING...WHICH IS IN EFFECT FROM 10 AM THIS MORNING TO 4 AM EST
THURSDAY. 

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

* TIMING: THE MAXIMUM WINDS ARE EXPECTED AROUND 12 AM EST 
  THURSDAY WITH THE LARGEST WAVES EXPECTED AROUND 2 AM EST 
  THURSDAY. 

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.

&&

$$

LCZ460-012130-
/O.UPG.KDTX.GL.A.0013.170301T1500Z-170302T0300Z/
/O.EXA.KDTX.GL.W.0012.170301T1500Z-170302T0300Z/
LAKE ST. CLAIR-
407 AM EST WED MAR 1 2017

...GALE WARNING IN EFFECT FROM 10 AM THIS MORNING TO 10 PM EST
THIS EVENING...

THE NATIONAL WEATHER SERVICE IN DETROIT/PONTIAC HAS ISSUED A GALE
WARNING...WHICH IS IN EFFECT FROM 10 AM THIS MORNING TO 10 PM EST
THIS EVENING. 

* WIND AND WAVES: DURING THE GALE WARNING...EXPECT SUSTAINED WINDS
  UP TO 22 KNOTS FROM THE WEST WITH GUSTS UP TO 38 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 5 PM EST 
  WEDNESDAY WITH THE LARGEST WAVES EXPECTED AROUND 5 PM 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.

&&

$$

LEZ444-012130-
/O.CON.KDTX.GL.W.0012.170301T1500Z-170302T0300Z/
MICHIGAN WATERS OF LAKE ERIE FROM DETROIT RIVER TO NORTH CAPE MI-
407 AM EST WED MAR 1 2017

...GALE WARNING REMAINS IN EFFECT FROM 10 AM THIS MORNING TO
10 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 39 KNOTS. THE
  LARGEST EXPECTED SIGNIFICANT WAVES WILL BE 4 FEET WITH A
  POTENTIAL MAXIMUM WAVE HEIGHT OF 7 FEET. 

* TIMING: THE MAXIMUM WINDS ARE EXPECTED AROUND 4 PM EST WEDNESDAY
  WITH THE LARGEST WAVES EXPECTED AROUND 6 PM 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.

&&

$$

LHZ421-422-012130-
/O.NEW.KDTX.SC.Y.0014.170301T1500Z-170302T0900Z/
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-
407 AM EST WED MAR 1 2017

...SMALL CRAFT ADVISORY IN EFFECT FROM 10 AM THIS MORNING TO 4 AM
EST THURSDAY...

THE NATIONAL WEATHER SERVICE IN DETROIT/PONTIAC HAS ISSUED A
SMALL CRAFT ADVISORY...WHICH IS IN EFFECT FROM 10 AM THIS MORNING
TO 4 AM EST THURSDAY. 

* WIND AND WAVES: DURING THE SMALL CRAFT ADVISORY...EXPECT
  SUSTAINED WINDS UP TO 27 KNOTS FROM THE NORTHWEST WITH GUSTS UP
  TO 32 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 10 PM EST 
  WEDNESDAY WITH THE LARGEST WAVES EXPECTED AROUND 12 AM EST 
  THURSDAY. 

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

486 
WHUS73 KDTX 011446
MWWDTX

URGENT - MARINE WEATHER MESSAGE
NATIONAL WEATHER SERVICE DETROIT/PONTIAC MI
946 AM EST WED MAR 1 2017

...GALES DEVELOPING TODAY AND TONIGHT...

.A SERIES OF LOW PRESSURE SYSTEMS WITH SHOWERS AND THUNDERSTORMS WILL 
TRACK NORTHEAST ALONG A STATIONARY FRONT ACROSS CENTRAL LAKE HURON 
TODAY. WINDS WILL BACK TO THE NORTH DURING THE AFTERNOON BEHIND THE 
LOWS DEPARTURE AND INCREASE TO GALE FORCE GUSTS TO 40 KNOTS THROUGH 
THURSDAY MORNING. RAIN SHOWERS WITH THIS SYSTEM WILL CHANGE TO LAKE 
EFFECT SNOW SHOWERS. NORTHWESTERLY FLOW WILL LINGER THROUGH THE END 
OF THE WEEK ACROSS THE LAKES THEN FOLLOWED BY A GRADUAL INCREASE IN 
SOUTHERLY FLOW AND A WARMING TREND FOR THE WEEKEND.

LCZ460-LEZ444-020300-
/O.CON.KDTX.GL.W.0012.170301T1500Z-170302T0300Z/
LAKE ST. CLAIR-
MICHIGAN WATERS OF LAKE ERIE FROM DETROIT RIVER TO NORTH CAPE MI-
946 AM EST WED MAR 1 2017

...GALE WARNING REMAINS IN EFFECT UNTIL 10 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 39 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 PM EST 
  WEDNESDAY WITH THE LARGEST WAVES EXPECTED AROUND 2 PM 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>363-441>443-462>464-020300-
/O.CON.KDTX.GL.W.0012.170301T1500Z-170302T0900Z/
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-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-
946 AM EST WED MAR 1 2017

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

* WIND AND WAVES: DURING THE GALE WARNING...EXPECT SUSTAINED 
  WINDS UP TO 30 KNOTS FROM THE NORTHWEST WITH GUSTS UP TO 39 
  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 
  WEDNESDAY WITH THE LARGEST WAVES EXPECTED AROUND 1 AM EST 
  THURSDAY. 

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.

&&

$$

LHZ421-422-020300-
/O.CON.KDTX.SC.Y.0014.170301T1500Z-170302T0900Z/
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-
946 AM EST WED MAR 1 2017

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

* WIND AND WAVES: DURING THE SMALL CRAFT ADVISORY...EXPECT 
  SUSTAINED WINDS UP TO 27 KNOTS FROM THE NORTHWEST 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 10 PM EST 
  WEDNESDAY WITH THE LARGEST WAVES EXPECTED AROUND 12 AM EST 
  THURSDAY. 

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.

&&

$$

CB

477 
WHUS73 KDTX 012046
MWWDTX

URGENT - MARINE WEATHER MESSAGE
NATIONAL WEATHER SERVICE DETROIT/PONTIAC MI
346 PM EST WED MAR 1 2017

...NORTHWESTERLY GALES TONIGHT...

.NORTH TO NORTHWEST GALES OVER LAKE HURON WILL PERSIST THROUGH LATE 
TONIGHT AS COLDER AIR SPREADS INTO THE AREA. WESTERLY GALES OVER 
LAKES SAINT CLAIR AND ERIE DIMINISH THIS EVENING. MODERATE TO FRESH 
NORTHWESTERLY FLOW WILL LINGER THROUGH THE END OF THE WEEK ACROSS 
THE LAKES THEN FOLLOWED BY A GRADUAL INCREASE IN SOUTHERLY FLOW OVER 
THE WEEKEND.

LCZ460-LEZ444-020900-
/O.EXT.KDTX.GL.W.0012.000000T0000Z-170302T0900Z/
LAKE ST. CLAIR-
MICHIGAN WATERS OF LAKE ERIE FROM DETROIT RIVER TO NORTH CAPE MI-
346 PM EST WED MAR 1 2017

...GALE WARNING NOW IN EFFECT UNTIL 4 AM EST THURSDAY...

THE GALE WARNING IS NOW IN EFFECT UNTIL 4 AM EST THURSDAY. 

* WIND AND WAVES: DURING THE GALE WARNING...EXPECT SUSTAINED 
  WINDS UP TO 26 KNOTS FROM THE WEST WITH GUSTS UP TO 32 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 8 PM EST 
  WEDNESDAY WITH THE LARGEST WAVES EXPECTED AROUND 3 PM 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>363-441>443-462>464-020900-
/O.CON.KDTX.GL.W.0012.000000T0000Z-170302T0900Z/
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-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-
346 PM EST WED MAR 1 2017

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

* WIND AND WAVES: DURING THE GALE WARNING...EXPECT SUSTAINED 
  WINDS UP TO 31 KNOTS FROM THE NORTH 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 11 PM EST 
  WEDNESDAY WITH THE LARGEST WAVES EXPECTED AROUND 2 AM EST 
  THURSDAY. 

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.

&&

$$

LHZ421-422-020900-
/O.CON.KDTX.SC.Y.0014.000000T0000Z-170302T0900Z/
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-
346 PM EST WED MAR 1 2017

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

* WIND AND WAVES: DURING THE SMALL CRAFT ADVISORY...EXPECT 
  SUSTAINED WINDS UP TO 28 KNOTS FROM THE NORTH WITH GUSTS UP 
  TO 36 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 PM EST 
  WEDNESDAY WITH THE LARGEST WAVES EXPECTED AROUND 12 AM EST 
  THURSDAY. 

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.

&&

$$

CB

291 
WHUS73 KDTX 020339
MWWDTX

URGENT - MARINE WEATHER MESSAGE
NATIONAL WEATHER SERVICE DETROIT/PONTIAC MI
1039 PM EST WED MAR 1 2017

...NORTHWESTERLY GALES TONIGHT...

.NORTH TO NORTHWEST GALES OVER LAKE HURON WILL PERSIST THROUGH LATE 
TONIGHT AS COLDER AIR SPREADS INTO THE AREA. WESTERLY GALES OVER 
LAKES SAINT CLAIR AND ERIE DIMINISH THIS EVENING. MODERATE TO FRESH 
NORTHWESTERLY FLOW WILL LINGER THROUGH THE END OF THE WEEK ACROSS 
THE LAKES THEN FOLLOWED BY A GRADUAL INCREASE IN SOUTHERLY FLOW OVER 
THE WEEKEND.

LEZ444-021200-
/O.NEW.KDTX.LO.Y.0002.170302T0339Z-170302T1200Z/
/O.CON.KDTX.GL.W.0012.000000T0000Z-170302T0900Z/
MICHIGAN WATERS OF LAKE ERIE FROM DETROIT RIVER TO NORTH CAPE MI-
1039 PM EST WED MAR 1 2017

...LOW WATER ADVISORY IN EFFECT UNTIL 7 AM EST THURSDAY...
...GALE WARNING REMAINS IN EFFECT UNTIL 4 AM EST THURSDAY...

THE NATIONAL WEATHER SERVICE IN DETROIT/PONTIAC HAS ISSUED A LOW
WATER ADVISORY...WHICH IS IN EFFECT UNTIL 7 AM EST THURSDAY. 

* WATER LEVELS: WATER LEVELS WILL DROP TO NEAR LOW WATER DATUM OR
  ABOUT A LITTLE MORE THAN A FOOT BELOW THE CRITICAL MARK FOR SAFE
  NAVIGATION FOR WESTERN LAKE ERIE. WATER LEVELS WILL RISE BY
  DAYBREAK.  

* WIND AND WAVES: DURING THE GALE WARNING...EXPECT SUSTAINED 
  WINDS UP TO 31 KNOTS FROM THE WEST WITH GUSTS UP TO 37 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 10 PM EST 
  WEDNESDAY WITH THE LARGEST WAVES EXPECTED AROUND 10 PM 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.

A LOW WATER ADVISORY MEANS WATER LEVELS ARE EXPECTED TO BE
SIGNIFICANTLY BELOW AVERAGE. MARINERS SHOULD USE EXTREME CAUTION
AND TRANSIT AT THE SLOWEST SAFE NAVIGABLE SPEED TO MINIMIZE
IMPACT.

&&

$$

LCZ460-020900-
/O.CON.KDTX.GL.W.0012.000000T0000Z-170302T0900Z/
LAKE ST. CLAIR-
1039 PM EST WED MAR 1 2017

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

* WIND AND WAVES: DURING THE GALE WARNING...EXPECT SUSTAINED 
  WINDS UP TO 26 KNOTS FROM THE NORTHWEST WITH GUSTS UP TO 31 
  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 10 PM EST 
  WEDNESDAY WITH THE LARGEST WAVES EXPECTED AROUND 1 AM EST 
  THURSDAY. 

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>363-441>443-462>464-020900-
/O.CON.KDTX.GL.W.0012.000000T0000Z-170302T0900Z/
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-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-
1039 PM EST WED MAR 1 2017

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

* WIND AND WAVES: DURING THE GALE WARNING...EXPECT SUSTAINED 
  WINDS UP TO 31 KNOTS FROM THE NORTHWEST 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 1 AM EST 
  THURSDAY WITH THE LARGEST WAVES EXPECTED AROUND 2 AM EST 
  THURSDAY. 

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.

&&

$$

LHZ421-422-020900-
/O.CON.KDTX.SC.Y.0014.000000T0000Z-170302T0900Z/
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-
1039 PM EST WED MAR 1 2017

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

* WIND AND WAVES: DURING THE SMALL CRAFT ADVISORY...EXPECT 
  SUSTAINED WINDS UP TO 27 KNOTS FROM THE NORTHWEST 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 1 AM EST 
  THURSDAY WITH THE LARGEST WAVES EXPECTED AROUND 12 AM EST 
  THURSDAY. 

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.

&&

$$

220 
WHUS73 KDTX 020903
MWWDTX

URGENT - MARINE WEATHER MESSAGE
NATIONAL WEATHER SERVICE DETROIT/PONTIAC MI
403 AM EST THU MAR 2 2017

...MODERATE NORTHWEST WIND AND HIGH WAVES TODAY...

.MODERATE TO FRESH NORTHWESTERLY FLOW WILL PERSIST THROUGH THE LATE 
WEEK PERIOD.  EARLY DAY GUSTS WILL EASE THROUGH THE DAY, GENERALLY 
SETTLING BELOW 25 KNOTS.  SOME RENEWED INCREASE TONIGHT, ALLOWING 
GUSTS TO APPROACH 30 KNOTS FOR A TIME LATE TONIGHT THROUGH FRIDAY 
MORNING OVER PORTIONS OF THE LAKE HURON OPENWATERS.  LIGHT WINDS TO 
START THE WEEKEND UNDER HIGH PRESSURE, THEN INCREASING OUT THE 
SOUTHEAST THROUGH THE LATTER HALF OF THE WEEKEND.

LEZ444-021015-
/O.CAN.KDTX.LO.Y.0002.000000T0000Z-170302T1200Z/
/O.EXP.KDTX.GL.W.0012.000000T0000Z-170302T0900Z/
MICHIGAN WATERS OF LAKE ERIE FROM DETROIT RIVER TO NORTH CAPE MI-
403 AM EST THU MAR 2 2017

...LOW WATER ADVISORY IS CANCELLED...
...GALE WARNING HAS EXPIRED...

THE NATIONAL WEATHER SERVICE IN DETROIT/PONTIAC HAS CANCELLED THE
LOW WATER ADVISORY. THE GALE WARNING IS NO LONGER IN EFFECT. 

$$

LHZ441>443-022100-
/O.EXP.KDTX.GL.W.0012.000000T0000Z-170302T0900Z/
/O.NEW.KDTX.SC.Y.0015.170302T0903Z-170302T2100Z/
PORT AUSTIN TO HARBOR BEACH MI-HARBOR BEACH TO PORT SANILAC MI-
PORT SANILAC TO PORT HURON MI-
403 AM EST THU MAR 2 2017

...SMALL CRAFT ADVISORY IN EFFECT UNTIL 4 PM EST THIS AFTERNOON...
...GALE WARNING HAS EXPIRED...

THE NATIONAL WEATHER SERVICE IN DETROIT/PONTIAC HAS ISSUED A
SMALL CRAFT ADVISORY...WHICH IS IN EFFECT UNTIL 4 PM EST THIS
AFTERNOON. 

* WIND AND WAVES: DURING THE SMALL CRAFT ADVISORY...EXPECT 
  SUSTAINED WINDS UP TO 23 KNOTS FROM THE NORTHWEST WITH GUSTS 
  UP TO 31 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 4 AM EST 
  THURSDAY WITH THE LARGEST WAVES EXPECTED AROUND 4 AM EST 
  THURSDAY. 

THE GALE WARNING IS NO LONGER IN EFFECT. 

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-LHZ361>363-462>464-021015-
/O.EXP.KDTX.GL.W.0012.000000T0000Z-170302T0900Z/
LAKE ST. CLAIR-
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-
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-
403 AM EST THU MAR 2 2017

...GALE WARNING HAS EXPIRED...

THE GALE WARNING IS NO LONGER IN EFFECT. 

$$

LHZ421-022100-
/O.EXP.KDTX.SC.Y.0014.000000T0000Z-170302T0900Z/
/O.NEW.KDTX.SC.Y.0015.170302T0903Z-170302T2100Z/
OUTER SAGINAW BAY SW OF ALABASTER TO PORT AUSTIN MI TO INNER
SAGINAW BAY-
403 AM EST THU MAR 2 2017

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

THE NATIONAL WEATHER SERVICE IN DETROIT/PONTIAC HAS ISSUED A
SMALL CRAFT ADVISORY...WHICH IS IN EFFECT UNTIL 4 PM EST THIS
AFTERNOON. 

* WIND AND WAVES: DURING THE SMALL CRAFT ADVISORY...EXPECT 
  SUSTAINED WINDS UP TO 22 KNOTS FROM THE NORTHWEST 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 4 AM EST 
  THURSDAY WITH THE LARGEST WAVES EXPECTED AROUND 4 AM EST 
  THURSDAY. 

THE SMALL CRAFT ADVISORY IS NO LONGER IN EFFECT. 

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.

&&

$$

LHZ422-021015-
/O.EXP.KDTX.SC.Y.0014.000000T0000Z-170302T0900Z/
INNER SAGINAW BAY SW OF POINT AU GRES TO BAY PORT MI-
403 AM EST THU MAR 2 2017

...SMALL CRAFT ADVISORY HAS EXPIRED...

THE SMALL CRAFT ADVISORY IS NO LONGER IN EFFECT. 

$$

BT

Area Forecast Discussion
National Weather Service Detroit/Pontiac MI
1258 PM EST Tue Feb 28 2017

.AVIATION...

Tough Spring like system for the last day of February will cause
problems for aviation.  Overall synopsis is a stationary front
extends from Missouri northeast into north central lower Michigan. A
series of low pressure centers will ride northeast along this front
bringing rounds of showers and thunderstorms through Wednesday
afternoon where the last low pressure system will drive a cold front
through the area behind its departure. Plenty of warm air and
moisture south of the front is producing a wide range of ceilings and
visibilities but more are on the ifr to mvfr side. First wave of
activity will hit the northern tafs sites this evening and early
night while a separate convection development in Indiana may brush
the southern taf sites. There will be breaks in showers between waves
with the next one likely in the 06-12z time frame then last one with
frontal passage 15-18z. Surface gradient will tighten throughout the
night increasing and slightly veering winds to the south southwest.
Any thunderstorm has the potential to produce some hail and strong
wind gusts.

For DTW... mainly mvfr ceilings and visibilities through period with
possibility of ifr ceilings at times.  Thunderstorm potential in the
22-03z time frame as a cluster of thunderstorms are expected to
develop in northern Indiana and move eastward possibly hitting or
just missing to the south. Another round of thunderstorms possible
in the 09-12z time frame. There will be chance for showers or drizzle
at almost any time though. Any thunderstorm could possibly produce
hail and strong wind gusts. Frontal passage tomorrow around 18z will
veer winds to the west and increase substantially as departing
surface low deepens. winds will become sustained around 25 kts with
peak wind gusts to 40kts possible late Wednesday afternoon.

//DTW THRESHOLD PROBABILITIES...

* High for ceiling aob 5000 feet through early Wednesday
  afternoon.

* Low for thunderstorms impacting terminal this evening and early
  night.  Moderate in the 09-12z time frame.

&&

.PREV DISCUSSION...
Issued at 340 AM EST Tue Feb 28 2017

DISCUSSION...

An active period of mid week weather remains on track to affect SE
Michigan today through Wednesday night. Several rounds of showers
and thunderstorms are expected today through tonight with a marginal
risk of severe weather later tonight. Rain is then expected to
change over to snow Wednesday afternoon and continue through evening
amounting to accumulation in the 2 to 4 inch range Tri Cities,
around 2 inches I-69 corridor, to an inch or less south of M-59
through metro Detroit to the Ohio border.

Satellite imagery, radar composite, and model analysis fields help
piece together the scenario for today. The exit region of the
leading upper level jet streak within broad southwest flow aloft is
providing enhanced support for upward motion over the Midwest and
southern Great Lakes. A respectable low level jet response is then
activating the first of a two stage pattern of isentropic lift and
moisture transport responsible for the inbound showers. There has
been some lightning strikes from central Illinois eastward through
Indiana that will be monitored as mid level lapse rates hold
generally less than 7 C/km in the 700-500 mb layer through this
stage of the event. The second stage will be driven by the main
upper jet moving downstream of the Rockies long wave trough this
afternoon. The strong and well defined exit region will further the
development of surface low pressure over the central Plains into the
Mississippi Valley with an eastward extending warm front. The
associated low level jet will force the next round of strong moisture
transport/theta-e advection that will spread showers over Lower
Michigan by early evening. Mid level lapse rates shown in hourly
mesoanalysis near 8 C/km in the 700-500 mb layer over the central
Plains will spread eastward with this forcing and bring a much
better chance of thunderstorms into our area compared to early
portions of the day.

The evening segment of showers/storms will generally be along and
ahead of the surface warm front that is projected with good model
agreement to follow into Lower Michigan. Consensus of high res model
depictions of non-zero surface based CAPE suggest the warm sector
will spread over most of SE Michigan by midnight and set the stage
for yet another round of showers and storms for the overnight hours.
This round will develop as the surface wave slides along the front
to our north followed by strong linear forcing under the upper jet
axis and along the trailing prefrontal trough and cold front. The
amount of instability that will be available for convection is the
greatest uncertainty during this segment of the event. As to be
expected during the night, high res models are very conservative
with surface based instability. They show generally less than 500
J/kg with surface dewpoint in the mid to upper 50s, and with 700-500
mb lapse rates generally less than 7 C/km. That being said, the
strong forcing supplied by the boundaries and associated ageostrophic
circulations will likely help to organize storms into a linear mode
that would make damaging wind the primary concern through sunrise
Wednesday. The latest day 1 outlook with marginal risk just over the
Ohio border reflects the highest probability area where instability
will be adequate for a greater degree of convective organization and
where wind gusts could possibly reach the ground through any surface
based stable layer. Along with severe weather potential is prospects
for excessive rainfall which could exceed 1 inch between midnight and
sunrise Wednesday morning on top of the quarter to half inch that is
likely with the prior activity expected today.

The very active period of weather for the Great Lakes will continue
Wednesday with secondary surface low development along the cold
front. This will be tied to the approach of the upper level trough
and associated vorticity maximum and will just reinforce the already
strong low level temperature gradient over the region. Critical
aspects of the forecast during this stage will be the timing of the
mid level dry slot during the morning and the eventual track of the
surface wave through Lower Michigan. Both will have influence on the
pace of rain changing to snow and snowfall totals through Wednesday
night associated with the strong and well-defined deformation zone
that will develop as the upper wave cross the area. A mid to late
afternoon rain/snow transition is maintained over the Tri Cities and
northern Thumb while nudging accumulation up into the 2 to 4 inch
range for the event total. There is some potential for
overachievement under the deformation forcing as mid level moisture
will be plentiful judging by 2-3 g/kg specific humidity in the 850-
700 mb layer with very low stability up to about 400 mb. The pattern
appears progressive enough to remain under advisory criteria for now
with all models indicating little to no additional accumulation
after midnight Wednesday night.

The end of the week will be quieter, at least relative to the mid
week period, as a textbook clipper is expected to move through Lower
Michigan Thursday night into Friday. This system could produce an
inch or two of snow as it moves through the region, mainly south of
I-69 on current projections. This will be followed by a warming
trend that remains on track for the weekend.

MARINE...

South to southeast flow will increase today in advance of an
approaching low pressure system. Relatively stable conditions
suggest that wind gusts should top out around 25 knots during the
day over Lake Huron. This primarily southerly direction will also
minimize wave concerns over the nearshore waters. The low pressure
will slowly track through the Central Great Lakes late tonight into
Wednesday.

Stronger north winds will develop as this system moves to the east,
and while a few gale force gusts will be possible over the open
waters of Lake Huron Wednesday into Wednesday night, it appears that
gusts to around 30 knots will be a more common occurrence. Given
this fact, will hold off on a Gale Watch with this forecast and
allow the model solutions to better define low pressure strength and
position. Winds will quickly diminish on Thursday as high pressure
begins to encroach on the area. This high will then build across the
area Friday and Friday night.

HYDROLOGY...

Deepening low pressure coming out of the Central Plains will spread
showers and thunderstorms over Lower Michigan today through
Wednesday. Total rainfall during this time is expected to range from
0.75 inches to 1.25 inches with the bulk of the heaviest rain
falling tonight. Bands of heavier showers and thunderstorms will
have potential to result in locally higher rates/amounts. Minor
flooding of lying areas is possible along with rises in area rivers
and streams. Much colder air will filter in by the end of the day on
Wednesday, changing any precipitation to snow. Snowfall Wednesday
evening will contribute minimally to the runoff.

&&

.DTX WATCHES/WARNINGS/ADVISORIES...
MI...NONE.
Lake Huron...Gale Watch from Wednesday morning through late Wednesday night for
     LHZ361>363-441-442-462-463.

Lake St Clair...Gale Watch from Wednesday morning through Wednesday evening for
     LCZ460.

Michigan waters of Lake Erie...Gale Watch from Wednesday morning through Wednesday evening for
     LEZ444.

&&

AVIATION.....DRC
DISCUSSION...BT
MARINE.......DG
HYDROLOGY....BT

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

Hazardous Weather Outlook
National Weather Service Detroit/Pontiac MI
453 AM EST Tue Feb 28 2017

MIZ068>070-075-076-082-083-011000-
Livingston-Oakland-Macomb-Washtenaw-Wayne-Lenawee-Monroe-
453 AM EST Tue Feb 28 2017

This hazardous weather outlook is for portions of southeast
Michigan.

.DAY ONE...Today and Tonight

There is a chance of thunderstorms tonight, mainly after midnight,
with a marginal risk of severe weather. A few storms during the
evening could produce less than 1 inch hail. Thunderstorm coverage
will increase after midnight as a low pressure system moves into
Lower Michigan. Damaging wind gusts to 60 mph are expected to be the
primary hazard during this time. Locally heavy rainfall is also
possible which could lead to ponding of water on roads and minor
flooding of prone areas. Storm motion is projected west to east at
45 mph.

.DAYS TWO THROUGH SEVEN...Wednesday through Monday

Rain will change to snow late Wednesday into Wednesday night with
accumulation around 1 inch possible mainly along and north of the
M-59 corridor.

.SPOTTER INFORMATION STATEMENT...

Dispatchers please notify your emergency managers immediately. Spotter
activation may be needed tonight.

MIZ047>049-053>055-060>063-011000-
Midland-Bay-Huron-Saginaw-Tuscola-Sanilac-Shiawassee-Genesee-Lapeer-
St. Clair-
453 AM EST Tue Feb 28 2017

This hazardous weather outlook is for portions of southeast
Michigan.

.DAY ONE...Today and Tonight

There is a chance of thunderstorms tonight, mainly after midnight.
A few storms during the evening could produce less than 1 inch
hail. Thunderstorm coverage will increase after midnight as a low
pressure system moves into Lower Michigan. Locally heavy rainfall is
possible which could lead to ponding of water on roads and minor
flooding of prone areas. Storm motion is projected west to east at
45 mph.

.DAYS TWO THROUGH SEVEN...Wednesday through Monday

Rain will change to snow Wednesday afternoon and continue through
Wednesday evening. Accumulation in the 2 to 4 inch range is likely
for the Tri Cities and northern Thumb and 1 to 2 inches along the
I-69 corridor.

.SPOTTER INFORMATION STATEMENT...

Spotter activation is not yet planned for tonight.

LCZ460-LEZ444-LHZ361>363-421-422-441>443-462>464-011000-
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-
453 AM EST Tue Feb 28 2017

This hazardous weather outlook is for portions of Lake Erie, Lake
Huron and Lake St Clair.

.DAY ONE...Today and Tonight

There is a chance of thunderstorms tonight, mainly after midnight and
mainly over the south half of Lake Huron through western Lake Erie.
A few storms during the evening could produce less than 1 inch hail.
Thunderstorm coverage will increase after midnight as a low pressure
system moves into Lower Michigan. High wind greater than 35 knots is
expected to be the primary hazard during this time. Storm motion is
projected west to east at 40 knots.

.DAYS TWO THROUGH SEVEN...Wednesday through Monday

Small craft advisories may be needed Wednesday afternoon through
Wednesday night as stronger north wind builds waves over southern
Lake Huron.

.SPOTTER INFORMATION STATEMENT...

Dispatchers please notify your emergency managers immediately. Spotter
activation may be needed tonight near western Lake Erie.

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

BT