958
FZMY50 PGUM 090700
CWFGUM
COASTAL WATERS FORECAST FOR THE MARIANA ISLANDS
NATIONAL WEATHER SERVICE TIYAN GU
500 PM CHST TUE JUN 9 2026
MARIANAS WATERS OUT TO 40 NAUTICAL MILES
PMZ150-092300-
500 PM CHST TUE JUN 9 2026
SYNOPSIS FOR MARIANAS WATERS
LIGHT TO GENTLE EAST WINDS ARE EXPECTED FOR MOST OF THE WEEK,
INCREASING SLIGHTLY FOR WEDNESDAY. THE COMBINED SEAS ARE 3 TO 4
FEET ACROSS ALL COASTAL WATERS, WITH BRIEF PEAKS OF 5 FEET
FOR TINIAN AND SAIPAN, BUT HAS DECREASED FOR GUAM AND ROTA. THIS
IS DUE TO A PASSING TROUGH BRINGING ENOUGH LIFT TO PRODUCE
SHOWERS OVER TINIAN AND SAIPAN. AN UPPER-LEVEL LOW TO THE EAST OF
THE MARIANAS WILL LEND THE SUPPORT FOR THUNDERSTORMS THROUGH
TONIGHT.
PMZ151-152-092300-
GUAM COASTAL WATERS-ROTA COASTAL WATERS-
500 PM CHST TUE JUN 9 2026
TONIGHT
EAST WIND 10 KT. SEAS AROUND 4 FT. WAVE DETAIL:
NORTHEAST 3 FT AT 10 SECONDS AND EAST 2 FT AT 4 SECONDS.
WEDNESDAY
EAST WIND 10 TO 15 KT. SEAS AROUND 4 FT. WAVE
DETAIL: NORTHEAST 3 FT AT 10 SECONDS AND EAST 3 FT AT 4 SECONDS.
WEDNESDAY NIGHT
EAST WIND 10 KT. SEAS AROUND 4 FT. WAVE
DETAIL: NORTHEAST 3 FT AT 9 SECONDS AND EAST 2 FT AT 4 SECONDS.
THURSDAY
EAST WIND 10 KT. SEAS 3 TO 4 FT. WAVE DETAIL:
NORTHEAST 3 FT AT 9 SECONDS AND EAST 2 FT AT 4 SECONDS.
THURSDAY NIGHT
EAST WIND 5 TO 10 KT. SEAS AROUND 4 FT. WAVE
DETAIL: EAST 3 FT AT 9 SECONDS AND EAST 2 FT AT 4 SECONDS.
FRIDAY THROUGH SUNDAY
EAST WIND 5 TO 10 KT. SEAS AROUND 4 FT.
WAVE DETAIL: EAST 3 FT AT 8 SECONDS AND NORTHEAST 2 FT AT
4 SECONDS.
PMZ153-154-092300-
TINIAN COASTAL WATERS-SAIPAN COASTAL WATERS-
500 PM CHST TUE JUN 9 2026
TONIGHT
EAST WIND 5 TO 10 KT. SEAS AROUND 4 FT. WAVE DETAIL:
NORTHEAST 4 FT AT 10 SECONDS AND EAST 2 FT AT 4 SECONDS. SCATTERED
SHOWERS AND ISOLATED THUNDERSTORMS THROUGH MIDNIGHT.
WEDNESDAY
EAST WIND 10 KT. SEAS AROUND 4 FT. WAVE DETAIL:
NORTHEAST 3 FT AT 10 SECONDS AND EAST 2 FT AT 4 SECONDS.
WEDNESDAY NIGHT
EAST WIND 5 TO 10 KT. SEAS 3 TO 4 FT. WAVE
DETAIL: NORTHEAST 3 FT AT 9 SECONDS AND EAST 2 FT AT 4 SECONDS.
THURSDAY
EAST WIND 10 KT. SEAS 3 TO 4 FT. WAVE DETAIL:
NORTHEAST 3 FT AT 9 SECONDS AND EAST 2 FT AT 4 SECONDS.
THURSDAY NIGHT
NORTHEAST WIND 5 TO 10 KT. SEAS 3 TO 4 FT. WAVE
DETAIL: EAST 3 FT AT 9 SECONDS AND NORTHEAST 2 FT AT 4 SECONDS.
FRIDAY THROUGH SUNDAY
EAST WIND 5 KT. SEAS AROUND 3 TO 4 FT.
WAVE DETAIL: EAST 3 FT AT 8 SECONDS AND EAST 2 FT AT 4 SECONDS.
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