Marine Weather Message
Issued by NWS Tiyan, Guam

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WHGM70 PGUM 232008
MWWGUM

URGENT - MARINE WEATHER MESSAGE
NATIONAL WEATHER SERVICE TIYAN GU
608 AM CHST TUE OCT 24 2017

PMZ151-152-240900-
/O.UPG.PGUM.SC.Y.0006.000000T0000Z-171025T0800Z/
/O.NEW.PGUM.SE.W.0003.171023T2008Z-171024T1200Z/
/O.NEW.PGUM.SC.Y.0008.171024T1200Z-171025T0800Z/
GUAM COASTAL WATERS-ROTA COASTAL WATERS-
608 AM CHST TUE OCT 24 2017

...HAZARDOUS SEAS WARNING IN EFFECT UNTIL 10 PM CHST THIS
EVENING...
...SMALL CRAFT ADVISORY IN EFFECT FROM 10 PM THIS EVENING TO 6 PM
CHST WEDNESDAY...

THE NATIONAL WEATHER SERVICE IN TIYAN HAS ISSUED A HAZARDOUS SEAS
WARNING, WHICH IS IN EFFECT UNTIL 10 PM CHST THIS EVENING.
A SMALL CRAFT ADVISORY WILL BE IN EFFECT FROM 10 PM THIS EVENING
TO 6 PM CHST WEDNESDAY.

WINDS...TROPICAL STORM FORCE WINDS POSSIBLE. WINDS WILL INCREASE
TO BETWEEN 35 KT WITH GUST TO 45 KT TODAY. WINDS WILL GRADUALLY
DECREASE TONIGHT.

SEAS...SEAS OF 10 TO 15 FEET WILL BRIEFLY RISE TO 15 TO 20 FEET
THIS AFTERNOON AND THIS EVENING AS TROPICAL STORM 27W PASSES NEAR
THE MARIANAS. THESE SEAS WILL DECREASE LATE TONIGHT FALLING BELOW
DANGEROUS LEVELS BUT WILL REMAIN HAZARDOUS THROUGH WEDNESDAY...
THEN BEGIN TO SLOWLY DIMINISH WEDNESDAY NIGHT...AND SHOULD FALL
BELOW HAZARDOUS LEVELS THURSDAY.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A HAZARDOUS SEAS WARNING MEANS HAZARDOUS SEA CONDITIONS ARE
IMMINENT OR OCCURRING. RECREATIONAL BOASTERS SHOULD REMAIN IN
PORT...OR TAKE SHELTER UNTIL WAVES SUBSIDE.  COMMERCIAL VESSELS
SHOULD PREPARE FOR ROUGH SEAS AND CONSIDER REMAINING IN PORT OR
TAKING SHELTER IN PORT UNTIL HAZARDOUS SEAS SUBSIDE.

A SMALL CRAFT ADVISORY MEANS THAT WIND SPEEDS OF 21 TO 33 KNOTS
ARE EXPECTED TO PRODUCE WAVE CONDITIONS HAZARDOUS TO SMALL CRAFT.
INEXPERIENCED MARINERS...ESPECIALLY THOSE OPERATING SMALLER
VESSELS...SHOULD AVOID SAILING IN THESE CONDITIONS.

&&

$$

PMZ153-154-240900-
/O.CON.PGUM.SC.Y.0006.000000T0000Z-171025T0800Z/
TINIAN COASTAL WATERS-SAIPAN COASTAL WATERS-
608 AM CHST TUE OCT 24 2017

...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 6 PM CHST
WEDNESDAY...

WINDS...WINDS WILL INCREASE TO BETWEEN 20 AND 30 KT EARLY
TODAY. WINDS WILL GRADUALLY DECREASE STARTING WEDNESDAY.

SEAS...SEAS OF 9 TO 12 FEET WILL CONTINUE THROUGH WEDNESDAY...
THEN BEGIN TO SLOWLY DIMINISH WEDNESDAY NIGHT...AND SHOULD FALL
BELOW HAZARDOUS LEVELS THURSDAY.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

INEXPERIENCED MARINERS...ESPECIALLY THOSE OPERATING SMALLER
VESSELS...SHOULD AVOID SAILING IN THESE CONDITIONS.

&&

$$

ZIOBRO


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