Marine Weather Message
Issued by NWS Detroit/Pontiac, MI

Current Version | Previous Version | Text Only | Print | Product List | Glossary On
Versions: 1 2 3 4 5 6 7 8
000
WHUS73 KDTX 201506
MWWDTX

URGENT - MARINE WEATHER MESSAGE
NATIONAL WEATHER SERVICE DETROIT/PONTIAC MI
1006 AM EST MON FEB 20 2017

...STRONG SOUTHEAST WINDS DEVELOPING TONIGHT...

.EAST-SOUTHEAST WINDS WILL BE ON THE INCREASE TODAY INTO TUESDAY
MORNING AS STRONG HIGH PRESSURE EXPANDS ACROSS THE EASTERN GREAT
LAKES, WHILE A FRONTAL BOUNDARY APPROACHES THE WESTERN GREAT LAKES.
WARM AIR ABOVE THE COLD LAKE SURFACE WILL KEEP FAIRLY STABLE
CONDITIONS. NONETHELESS, THE GRADIENT INCREASE AND LONG TRAJECTORY
OVER THE LAKES SUGGEST WINDS WILL BECOME RATHER GUSTY LATE TODAY
INTO TONIGHT. GUSTS UP TO 30 KNOTS APPEAR LIKELY ACROSS MUCH OF
LAKE HURON TONIGHT. THERE WILL BE A BRIEF WINDOW WHERE GUSTS MAY
REACH GALE FORCE ON LAKE HURON AROUND DAYBREAK TUESDAY. THE
BREVITY IN THE PERIOD OF POTENTIAL GALES WILL NOT WARRANT A GALE
WATCH/WARNING. THE FRONTAL BOUNDARY WILL SLOWLY MOVE ACROSS LOWER
MI AND LAKE HURON ON TUESDAY. THERE WILL BE SUBSTANTIAL WEAKENING
IN THE WINDS AS THE BROAD FRONTAL BOUNDARY MOVES INTO THE REGION.
FURTHER WEAKENING OF THE POST FRONTAL GRADIENT WILL SUPPORT LIGHT
AND VARIABLE WINDS TUES NIGHT. MODEST SOUTHWEST WINDS ARE THEN
FORECAST TO DEVELOP ON WEDNESDAY.

LHZ441-210400-
/O.NEW.KDTX.SC.Y.0009.170221T0300Z-170221T1700Z/
PORT AUSTIN TO HARBOR BEACH MI-
1006 AM EST MON FEB 20 2017

...SMALL CRAFT ADVISORY IN EFFECT FROM 10 PM THIS EVENING TO NOON
EST TUESDAY...

THE NATIONAL WEATHER SERVICE IN DETROIT/PONTIAC HAS ISSUED A
SMALL CRAFT ADVISORY...WHICH IS IN EFFECT FROM 10 PM THIS EVENING
TO NOON EST TUESDAY.

* WIND AND WAVES: DURING THE SMALL CRAFT ADVISORY...EXPECT
  SUSTAINED WINDS UP TO 23 KNOTS FROM THE SOUTHEAST 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 1 AM EST TUESDAY
  WITH THE LARGEST WAVES EXPECTED AROUND 4 AM EST 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.

&&

$$

SF



USA.gov is the U.S. government's official web portal to all federal, state and local government web resources and services.