Marine Weather Message
Issued by NWS Detroit/Pontiac, MI

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000
WHUS73 KDTX 170738
MWWDTX

URGENT - MARINE WEATHER MESSAGE
NATIONAL WEATHER SERVICE DETROIT/PONTIAC MI
238 AM EST WED JAN 17 2018

...GALES EXPECTED TODAY AND INTO TONIGHT...

.THE GALE WARNING WILL CONTINUE FOR WEDNESDAY AND WEDNESDAY EVENING
AS STRONG AND UNSTABLE SOUTHWEST FLOW DEVELOPS WITHIN STRENGTHENING
PRESSURE GRADIENT BETWEEN ARCTIC HIGH PRESSURE TO THE SOUTH AND LOW
PRESSURE TRAVERSING THE SOUTHERN SHORES OF HUDSON BAY. GUSTS TO AT
LEAST MARGINAL GALES ARE PROBABLE OVER A GOOD PORTION OF LAKE HURON,
INCLUDING SAGINAW BAY AND THE NORTHERN NEARSHORE WATERS. GUSTS TO 40
KNOT GALES ARE ANTICIPATED OVER THE CENTRAL OPEN WATERS. EPISODES OF
FRESH TO STRONG SOUTHWEST FLOW WILL BE COMMON FOR THE REMAINDER OF
THE WEEK, BUT GUST POTENTIAL WILL DIMINISH DUE TO AN INCREASINGLY
WARM STABLE FETCH.

LHZ363-441-462-172100-
/O.EXT.KDTX.GL.W.0006.180117T1500Z-180118T0900Z/
LAKE HURON FROM STURGEON POINT TO ALABASTER MI BEYOND 5NM OFF
SHORE-PORT AUSTIN TO HARBOR BEACH MI-
LAKE HURON FROM PORT AUSTIN TO HARBOR BEACH BEYOND 5NM OFF SHORE-
238 AM EST WED JAN 17 2018

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

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

* WIND AND WAVES: DURING THE GALE WARNING...EXPECT SUSTAINED
  WINDS UP TO 34 KNOTS FROM THE SOUTHWEST WITH GUSTS UP TO 41
  KNOTS. THE LARGEST EXPECTED SIGNIFICANT WAVES WILL BE 10 FEET
  WITH A POTENTIAL MAXIMUM WAVE HEIGHT OF 14 FEET.

* TIMING: THE MAXIMUM WINDS ARE EXPECTED AROUND 5 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.

&&

$$

LHZ362-421-172100-
/O.CON.KDTX.GL.W.0006.180117T1500Z-180118T0300Z/
LAKE HURON FROM PRESQUE ISLE LIGHT TO STURGEON POINT MI BEYOND
5NM OFF SHORE-
OUTER SAGINAW BAY SW OF ALABASTER TO PORT AUSTIN MI TO INNER
SAGINAW BAY-
238 AM EST WED JAN 17 2018

...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 32 KNOTS FROM THE SOUTHWEST WITH GUSTS UP TO 38
  KNOTS. THE LARGEST EXPECTED SIGNIFICANT WAVES WILL BE 10 FEET
  WITH A POTENTIAL MAXIMUM WAVE HEIGHT OF 14 FEET.

* TIMING: THE MAXIMUM WINDS ARE EXPECTED AROUND 4 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.

&&

$$

IRL



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