537
FPMY50 PGUM 121829
ZFPGUM
ZONE FORECAST FOR GUAM AND THE NORTHERN MARIANAS
NATIONAL WEATHER SERVICE TIYAN GU
429 AM CHST MON APR 13 2026
GUZ001-131100-
GUAM-
429 AM CHST MON APR 13 2026
..TROPICAL STORM WARNING IN EFFECT
..TYPHOON WATCH IN EFFECT
...HIGH SURF WARNING IN EFFECT UNTIL 6 PM CHST THURSDAY ALONG NORTH,
EAST, AND SOUTH FACING REEFS...
..FLOOD WATCH IN EFFECT THROUGH WEDNESDAY MORNING
...COASTAL FLOOD WATCH IN EFFECT FROM 6 AM CHST THIS MORNING THROUGH
WEDNESDAY AFTERNOON ALONG NORTH, EAST, AND SOUTH FACING REEFS...
TODAY
VERY WINDY. NORTH WINDS 30 TO 40 MPH. MOSTLY CLOUDY WITH
SCATTERED SHOWERS AND ISOLATED THUNDERSTORMS. HIGHS AROUND 84.
CHANCE OF SHOWERS 50 PERCENT.
TONIGHT
TROPICAL STORM CONDITIONS EXPECTED. NORTH WINDS 35 TO 45
MPH. MOSTLY CLOUDY WITH NUMEROUS LOCALLY HEAVY SHOWERS AND ISOLATED
THUNDERSTORMS. LOWS AROUND 79. CHANCE OF SHOWERS 60 PERCENT.
TUESDAY
TROPICAL STORM CONDITIONS EXPECTED. NORTHWEST WINDS 40 TO
50 MPH WITH GUSTS TO 60 MPH. CLOUDY WITH NUMEROUS LOCALLY HEAVY
SHOWERS SHOWERS AND ISOLATED THUNDERSTORMS. HIGHS AROUND 83. CHANCE
OF SHOWERS 70 PERCENT.
TUESDAY NIGHT
TROPICAL STORM CONDITIONS EXPECTED. WEST WINDS 40
TO 50 MPH. CLOUDY WITH NUMEROUS SHOWERS AND ISOLATED THUNDERSTORMS.
LOWS AROUND 79. CHANCE OF SHOWERS 60 PERCENT.
WEDNESDAY
TROPICAL STORM CONDITIONS EXPECTED. SOUTHWEST WINDS 35
TO 45 MPH. MOSTLY CLOUDY WITH SCATTERED SHOWERS AND ISOLATED
THUNDERSTORMS. HIGHS AROUND 84. CHANCE OF SHOWERS 50 PERCENT.
WEDNESDAY NIGHT AND THURSDAY
WINDY. MOSTLY CLOUDY. SCATTERED
SHOWERS AND ISOLATED THUNDERSTORMS. LOWS IN THE UPPER 70S. HIGHS IN
THE MID 80S. CHANCE OF SHOWERS 50 PERCENT.
THURSDAY NIGHT
WINDY. MOSTLY CLOUDY WITH A 20 PERCENT CHANCE OF
SHOWERS. LOWS IN THE UPPER 70S.
FRIDAY
BREEZY. PARTLY CLOUDY WITH A 20 PERCENT CHANCE OF SHOWERS.
HIGHS IN THE MID 80S.
FRIDAY NIGHT THROUGH SUNDAY
BREEZY. PARTLY CLOUDY WITH A
20 PERCENT CHANCE OF SHOWERS. LOWS IN THE UPPER 70S. HIGHS IN THE
MID 80S.
MPZ001-131100-
ROTA-
429 AM CHST MON APR 13 2026
..TYPHOON WARNING IN EFFECT
...HIGH SURF WARNING IN EFFECT UNTIL 6 PM CHST THURSDAY ALONG NORTH,
EAST, AND SOUTH FACING REEFS...
..FLOOD WATCH IN EFFECT THROUGH WEDNESDAY MORNING
...COASTAL FLOOD WATCH IN EFFECT FROM 6 AM CHST THIS MORNING THROUGH
WEDNESDAY AFTERNOON ALONG NORTH, EAST, AND SOUTH FACING REEFS...
TODAY
VERY WINDY. NORTH WINDS 30 TO 40 MPH. MOSTLY CLOUDY WITH
SCATTERED SHOWERS AND ISOLATED THUNDERSTORMS. HIGHS AROUND 84. CHANCE
OF SHOWERS 50 PERCENT.
TONIGHT
TROPICAL STORM CONDITIONS EXPECTED. NORTH WINDS 40 TO 50
MPH. CLOUDY WITH NUMEROUS HEAVY SHOWERS AND ISOLATED THUNDERSTORMS.
LOWS AROUND 76.
TUESDAY
TROPICAL STORM CONDITIONS EXPECTED WITH TYPHOON CONDITIONS
POSSIBLE. NORTHWEST WINDS 55 TO 65 MPH. GUSTS UP TO 80 MPH. CLOUDY
WITH NUMEROUS HEAVY SHOWERS AND ISOLATED THUNDERSTORMS. HIGHS AROUND
83. CHANCE OF SHOWERS 70 PERCENT.
TUESDAY NIGHT
TROPICAL STORM CONDITIONS EXPECTED. WEST WINDS 55
TO 65 MPH WITH GUSTS TO 75 MPH DECREASING TO 45 TO 55 MPH WITH GUSTS
TO 65 MPH AFTER MIDNIGHT. CLOUDY WITH NUMEROUS HEAVY SHOWERS AND
ISOLATED THUNDERSTORMS. LOWS AROUND 79. CHANCE OF SHOWERS 70
PERCENT.
WEDNESDAY
TROPICAL STORM CONDITIONS EXPECTED. SOUTHWEST WINDS 40
TO 50 MPH. GUSTS UP TO 60 MPH IN THE MORNING. MOSTLY CLOUDY WITH
SCATTERED SHOWERS AND ISOLATED THUNDERSTORMS. HIGHS AROUND 83. CHANCE
OF SHOWERS 50 PERCENT.
WEDNESDAY NIGHT
TROPICAL STORM CONDITIONS POSSIBLE. MOSTLY
CLOUDY. SCATTERED SHOWERS AND ISOLATED THUNDERSTORMS. LOWS IN THE
UPPER 70S. HIGHS IN THE MID 80S. CHANCE OF SHOWERS 50 PERCENT.
THURSDAY AND THURSDAY NIGHT
WINDY. MOSTLY CLOUDY WITH A 20
PERCENT CHANCE OF SHOWERS. HIGHS IN THE MID 80S. LOWS IN THE UPPER
70S.
FRIDAY
BREEZY. PARTLY CLOUDY WITH A 20 PERCENT CHANCE OF SHOWERS.
HIGHS IN THE MID 80S.
FRIDAY NIGHT THROUGH SUNDAY
BREEZY. PARTLY CLOUDY WITH A
20 PERCENT CHANCE OF SHOWERS. LOWS IN THE UPPER 70S. HIGHS IN THE
MID 80S.
MPZ002-003-131100-
TINIAN-SAIPAN-
429 AM CHST MON APR 13 2026
..TYPHOON WARNING IN EFFECT
...HIGH SURF WARNING IN EFFECT UNTIL 6 PM CHST THURSDAY ALONG NORTH,
EAST, AND SOUTH FACING REEFS...
..FLOOD WATCH IN EFFECT THROUGH WEDNESDAY MORNING
...COASTAL FLOOD WATCH IN EFFECT FROM 6 AM CHST THIS MORNING THROUGH
WEDNESDAY AFTERNOON ALONG NORTH, EAST, AND SOUTH FACING REEFS...
TODAY
VERY WINDY. NORTH WINDS 30 TO 40 MPH. MOSTLY CLOUDY WITH
SCATTERED SHOWERS AND ISOLATED THUNDERSTORMS. HIGHS AROUND 84. CHANCE
OF SHOWERS 50 PERCENT.
TONIGHT
TROPICAL STORM CONDITIONS EXPECTED. NORTH WINDS 40 TO 50
MPH. NUMEROUS HEAVY SHOWERS AND ISOLATED THUNDERSTORMS. LOWS AROUND
79. CHANCE OF SHOWERS 70 PERCENT.
TUESDAY
TYPHOON CONDITIONS EXPECTED. NORTH WINDS 50 TO 60 MPH
INCREASING TO 80 TO 120 MPH IN THE AFTERNOON. CLOUDY. NUMEROUS HEAVY
SHOWERS AND ISOLATED THUNDERSTORMS IN THE MORNING, THEN TORRENTIAL
RAIN AND SCATTERED THUNDERSTORMS IN THE AFTERNOON. HIGHS AROUND 83.
CHANCE OF SHOWERS NEAR 100 PERCENT.
TUESDAY NIGHT
TYPHOON CONDITIONS EXPECTED. NORTHWEST WINDS 130 TO
160 MPH BECOMING SOUTHWEST AND DECREASING TO 95 TO 115 MPH AFTER
MIDNIGHT. CLOUDY. TORRENTIAL RAIN AND SCATTERED THUNDERSTORMS. LOWS
AROUND 80. CHANCE OF SHOWERS NEAR 100 PERCENT.
WEDNESDAY AND WEDNESDAY NIGHT
TROPICAL STORM CONDITIONS EXPECTED.
SOUTHWEST WINDS 55 TO 65 MPH WITH GUSTS TO 75 MPH DECREASING TO 45
TO 55 MPH IN THE EVENING. CLOUDY. NUMEROUS HEAVY SHOWERS AND
ISOLATED THUNDERSTORMS. HIGHS AROUND 84. LOWS AROUND 80. CHANCE OF
SHOWERS 70 PERCENT.
THURSDAY AND THURSDAY NIGHT...VERY WINDY. MOSTLY CLOUDY WITH
SCATTERED SHOWERS AND ISOLATED THUNDERSTORMS. LOWS IN THE UPPER 70S.
HIGHS IN THE MID 80S. CHANCE OF SHOWERS 50 PERCENT.
FRIDAY
BREEZY. PARTLY SUNNY WITH A 20 PERCENT CHANCE OF SHOWERS.
HIGHS IN THE MID 80S.
FRIDAY NIGHT THROUGH SUNDAY
BREEZY. PARTLY CLOUDY WITH A
20 PERCENT CHANCE OF SHOWERS. LOWS IN THE UPPER 70S. HIGHS IN THE
MID 80S.
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