334
WHGM70 PGUM 031904
MWWGUM
URGENT - MARINE WEATHER MESSAGE
NATIONAL WEATHER SERVICE TIYAN GU
504 AM CHST SUN OCT 4 2026
PMZ151-152-040900-
/O.EXP.PGUM.SE.W.0007.000000T0000Z-261003T1900Z/
/O.NEW.PGUM.SC.Y.0071.261003T1904Z-261006T0700Z/
GUAM COASTAL WATERS-ROTA COASTAL WATERS-
504 AM CHST SUN OCT 4 2026
..SMALL CRAFT ADVISORY IN EFFECT UNTIL 5 PM CHST TUESDAY
..HAZARDOUS SEAS WARNING HAS EXPIRED
* WHAT...SOUTHWEST WINDS 20 TO 30 KT WITH GUSTS UP TO 40 KT AND
SEAS 10 TO 14 FEET EXPECTED.
* WHERE...GUAM AND ROTA COASTAL WATERS.
* WHEN...UNTIL 5 PM CHST TUESDAY.
* IMPACTS...STRONG WINDS CAN CAUSE HAZARDOUS SEAS WHICH COULD
CAPSIZE OR DAMAGE VESSELS AND REDUCE VISIBILITY.
* ADDITIONAL DETAILS...COMBINED SEAS HAVE DIMINISHED BELOW 15 FEET
AS TYPHOON CHOI-WAN MOVES FARTHER AWAY AND THE HAZARDOUS SEAS
WARNING HAS BEEN EXPIRED, BUT WILL REMAIN HAZARDOUS TO SMALL
CRAFT THROUGH THE NEXT FEW DAYS AS THEY REMAIN ELEVATED. SO, A
SMALL CRAFT ADVISORY IS NOW IN EFFECT.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
INEXPERIENCED MARINERS, ESPECIALLY THOSE OPERATING SMALLER
VESSELS, SHOULD AVOID BOATING IN HAZARDOUS CONDITIONS.
PMZ153-154-040600-
/O.CON.PGUM.GL.W.0004.000000T0000Z-261004T0600Z/
TINIAN COASTAL WATERS-SAIPAN COASTAL WATERS-
504 AM CHST SUN OCT 4 2026
...GALE WARNING REMAINS IN EFFECT UNTIL 4 PM CHST THIS
AFTERNOON...
* WHAT...SOUTHWEST WINDS 30 KT WITH FREQUENT GUSTS TO 40 KT AND
SEAS 14 TO 16 FEET.
* WHERE...TINIAN AND SAIPAN COASTAL WATERS.
* WHEN...UNTIL 4 PM CHST SUNDAY.
* IMPACTS...STRONG WINDS WILL CAUSE HAZARDOUS SEAS WHICH COULD
CAPSIZE OR DAMAGE VESSELS AND REDUCE VISIBILITY.
* ADDITIONAL DETAILS...AS TYPHOON CHOI-WAN (26W) MOVES NORTH-
NORTHEAST AND AWAY FROM THE ISLANDS, A STRONG MONSOON SURGE WILL
CONTINUE ACROSS THE AREA. STRONG TO NEAR-GALE FORCE WINDS WITH
FREQUENT GALE-FORCE GUSTS WILL CONTINUE OVER TINIAN AND SAIPAN
COASTAL WATERS THROUGH THIS AFTERNOON, GRADUALLY DIMINISHING
THROUGH TONIGHT.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
A GALE WARNING MEANS WINDS OF 34 TO 47 KNOTS ARE IMMINENT OR
OCCURRING. OPERATING A VESSEL IN GALE CONDITIONS REQUIRES
EXPERIENCE AND PROPERLY EQUIPPED VESSELS.
DECOU
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