064
FPMY50 PGUM 131145
ZFPGUM
ZONE FORECAST FOR GUAM AND THE NORTHERN MARIANAS
NATIONAL WEATHER SERVICE TIYAN GU
945 PM CHST MON APR 13 2026
GUZ001-132200-
GUAM-
945 PM CHST MON APR 13 2026
..TROPICAL STORM WARNING IN EFFECT
..TYPHOON WATCH IN EFFECT
...COASTAL FLOOD WARNING IN EFFECT UNTIL 5 AM CHST THURSDAY ALONG
NORTH, EAST, AND SOUTH FACING REEFS...
...HIGH SURF WARNING REMAINS IN EFFECT UNTIL 6 PM CHST THURSDAY
ALONG NORTH, EAST, AND SOUTH FACING REEFS...
..FLOOD WATCH REMAINS IN EFFECT THROUGH WEDNESDAY MORNING
TONIGHT
TROPICAL STORM CONDITIONS EXPECTED.
NORTHWEST WINDS 40 TO 50 MPH. GUSTS UP TO 60 MPH AFTER MIDNIGHT.
CLOUDY. NUMEROUS HEAVY SHOWERS AND SCATTERED THUNDERSTORMS. LOWS
AROUND 79. CHANCE OF SHOWERS 70 PERCENT.
TUESDAY
TROPICAL STORM CONDITIONS EXPECTED. NORTHWEST WINDS 50 TO
60 MPH WITH GUSTS TO 70 MPH. CLOUDY WITH NUMEROUS HEAVY SHOWERS AND
ISOLATED THUNDERSTORMS. HIGHS AROUND 83. CHANCE OF SHOWERS 80
PERCENT.
TUESDAY NIGHT
TROPICAL STORM CONDITIONS EXPECTED. WEST WINDS 50
TO 60 MPH. CLOUDY WITH NUMEROUS HEAVY SHOWERS AND ISOLATED
THUNDERSTORMS. LOWS AROUND 79. CHANCE OF SHOWERS 60 PERCENT. LOWS
AROUND 79. CHANCE OF SHOWERS 60 PERCENT.
WEDNESDAY
TROPICAL STORM CONDITIONS EXPECTED. WEST WINDS 40 TO 50
MPH. CLOUDY WITH NUMEROUS HEAVY SHOWERS AND ISOLATED THUNDERSTORMS.
HIGHS AROUND 84. CHANCE OF SHOWERS 60 PERCENT.
WEDNESDAY NIGHT AND THURSDAY
VERY WINDY. SOUTHWEST WINDS 30 TO
40 MPH. MOSTLY CLOUDY. SCATTERED SHOWERS AND ISOLATED THUNDERSTORMS.
LOWS AROUND 79. HIGHS AROUND 85. CHANCE OF SHOWERS 50 PERCENT.
THURSDAY NIGHT AND FRIDAY
BREEZY. MOSTLY CLOUDY. A 20 PERCENT
CHANCE OF SHOWERS. LOWS IN THE UPPER 70S. HIGHS IN THE MID 80S.
FRIDAY NIGHT THROUGH SUNDAY NIGHT
BREEZY. PARTLY CLOUDY WITH A
20 PERCENT CHANCE OF SHOWERS. LOWS IN THE UPPER 70S. HIGHS IN THE
MID 80S.
MONDAY
PARTLY CLOUDY WITH A 20 PERCENT CHANCE OF SHOWERS. HIGHS
IN THE MID 80S.
MPZ001-132200-
ROTA-
945 PM CHST MON APR 13 2026
..TYPHOON WARNING IN EFFECT
...COASTAL FLOOD WARNING IN EFFECT UNTIL 5 AM CHST THURSDAY ALONG
NORTH, EAST, AND SOUTH FACING REEFS...
...HIGH SURF WARNING REMAINS IN EFFECT UNTIL 6 PM CHST THURSDAY
ALONG NORTH, EAST, AND SOUTH FACING REEFS...
..FLOOD WATCH REMAINS IN EFFECT THROUGH WEDNESDAY MORNING
TONIGHT
TROPICAL STORM CONDITIONS EXPECTED. NORTH WINDS 30 TO 40
MPH WITH GUSTS TO 50 MPH INCREASING TO 45 TO 65 MPH WITH GUSTS TO 80
MPH AFTER MIDNIGHT. CLOUDY. NUMEROUS HEAVY SHOWERS AND ISOLATED
THUNDERSTORMS. LOWS AROUND 80. CHANCE OF SHOWERS 70 PERCENT.
TUESDAY
TROPICAL STORM CONDITIONS EXPECTED. TYPHOON CONDITIONS
POSSIBLE. NORTHWEST WINDS 50 TO 70 MPH. GUSTS UP 85 MPH. CLOUDY.
HEAVY SHOWERS AND ISOLATED THUNDERSTORMS. HIGHS AROUND 83. CHANCE OF
SHOWERS NEAR 100 PERCENT.
TUESDAY NIGHT
TROPICAL STORM CONDITIONS EXPECTED. TYPHOON
CONDITIONS POSSIBLE. SOUTHWEST WINDS 45 TO 65 MPH WITH GUSTS TO 80
MPH. CLOUDY. HEAVY SHOWERS AND ISOLATED THUNDERSTORMS IN THE
EVENING, THEN NUMEROUS HEAVY SHOWERS AND ISOLATED THUNDERSTORMS AFTER
MIDNIGHT. LOWS AROUND 79. CHANCE OF SHOWERS NEAR 100 PERCENT.
WEDNESDAY
TROPICAL STORM CONDITIONS EXPECTED. SOUTHWEST WINDS 50
TO 60 MPH. GUSTS UP TO 75 MPH DECREASING TO 65 MPH IN THE AFTERNOON.
CLOUDY. NUMEROUS HEAVY SHOWERS AND ISOLATED THUNDERSTORMS. HIGHS
AROUND 84. CHANCE OF SHOWERS 60 PERCENT.
WEDNESDAY NIGHT
TROPICAL STORM CONDITIONS EXPECTED. SOUTHWEST WINDS
35 TO 45 MPH. MOSTLY CLOUDY. NUMEROUS SHOWERS AND ISOLATED
THUNDERSTORMS. LOWS AROUND 79. CHANCE OF SHOWERS 60 PERCENT.
THURSDAY
WINDY. SOUTHWEST WINDS 25 TO 35 MPH. MOSTLY CLOUDY.
SCATTERED SHOWERS AND ISOLATED THUNDERSTORMS. HIGHS AROUND 84.
CHANCE OF SHOWERS 50 PERCENT.
THURSDAY NIGHT AND FRIDAY
WINDY. MOSTLY CLOUDY. A 20 PERCENT
CHANCE OF SHOWERS. LOWS IN THE UPPER 70S. HIGHS IN THE MID 80S.
FRIDAY NIGHT THROUGH SUNDAY NIGHT
BREEZY. PARTLY CLOUDY WITH A
20 PERCENT CHANCE OF SHOWERS. LOWS IN THE UPPER 70S. HIGHS IN THE
MID 80S.
MONDAY
PARTLY CLOUDY WITH A 20 PERCENT CHANCE OF SHOWERS. HIGHS
IN THE MID 80S.
MPZ002-003-132200-
TINIAN-SAIPAN-
945 PM CHST MON APR 13 2026
..TYPHOON WARNING IN EFFECT
...COASTAL FLOOD WARNING IN EFFECT UNTIL 5 AM CHST THURSDAY ALONG
NORTH, EAST, AND SOUTH FACING REEFS...
...HIGH SURF WARNING REMAINS IN EFFECT UNTIL 6 PM CHST THURSDAY
ALONG NORTH, EAST, AND SOUTH FACING REEFS...
..FLOOD WATCH REMAINS IN EFFECT THROUGH WEDNESDAY MORNING
TONIGHT
TROPICAL STORM CONDITIONS EXPECTED. NORTHEAST WINDS 45 TO
65 MPH WITH GUSTS TO 85 MPH. CLOUDY. SCATTERED SHOWERS AND ISOLATED
THUNDERSTORMS BECOMING NUMEROUS HEAVY SHOWERS AND SCATTERED
THUNDERSTORMS AROUND MIDNIGHT. LOWS AROUND 79. CHANCE OF SHOWERS 70
PERCENT.
TUESDAY
TYPHOON CONDITIONS EXPECTED. NORTHEAST WINDS 60 TO 70 MPH
INCREASING TO 95 TO 105 MPH NEAR NOON, THEN NEAR 110 TO 125 MPH
LATER IN THE AFTERNOON. CLOUDY. NUMEROUS HEAVY SHOWERS AND SCATTERED
THUNDERSTORMS BECOMING WIDESPREAD HEAVY SHOWERS AND SCATTERED
THUNDERSTORMS LATER IN THE MORNING. HIGHS AROUND 83. CHANCE OF
SHOWERS NEAR 100 PERCENT.
TUESDAY NIGHT
TYPHOON CONDITIONS EXPECTED. NORTHEAST WINDS 125 TO
145 MPH WITH GUSTS TO 160 MPH SHIFTING TO THE SOUTHWEST 100 TO 115
MPH AFTER MIDNIGHT. CLOUDY WITH TORRENTIAL RAIN AND SCATTERED
THUNDERSTORMS. LOWS AROUND 79. CHANCE OF SHOWERS NEAR 100 PERCENT.
WEDNESDAY
TYPHOON CONDITIONS EXPECTED. SOUTHWEST WINDS 70 TO 85
MPH WITH GUSTS TO 85 MPH DECREASING TO 55 TO 65 MPH WITH GUSTS TO 75
MPH IN THE AFTERNOON. CLOUDY. HEAVY SHOWERS AND ISOLATED
THUNDERSTORMS IN THE MORNING, THEN NUMEROUS HEAVY SHOWERS AND
ISOLATED THUNDERSTORMS IN THE AFTERNOON. HIGHS AROUND 83. CHANCE OF
SHOWERS NEAR 100 PERCENT.
WEDNESDAY NIGHT
TROPICAL STORM CONDITIONS EXPECTED. SOUTHWEST
WINDS 45 TO 55 MPH WITH GUSTS TO 65 MPH. CLOUDY. NUMEROUS HEAVY
SHOWERS AND ISOLATED THUNDERSTORMS IN THE EVENING, THEN SCATTERED
SHOWERS AND ISOLATED THUNDERSTORMS AFTER MIDNIGHT. LOCALLY HEAVY
RAINFALL POSSIBLE IN THE EVENING. LOWS AROUND 78. CHANCE OF SHOWERS
70 PERCENT.
THURSDAY
TROPICAL STORM CONDITIONS EXPECTED. SOUTHWEST WINDS 35
TO 45 MPH. CLOUDY WITH NUMEROUS SHOWERS AND ISOLATED THUNDERSTORMS.
HIGHS AROUND 83. CHANCE OF SHOWERS 60 PERCENT.
THURSDAY NIGHT
WINDY. MOSTLY CLOUDY. 30 PERCENT CHANCE OF SHOWERS
AND SLIGHT CHANCE OF THUNDERSTORMS. LOWS IN THE UPPER 70S.
FRIDAY
BREEZY. PARTLY SUNNY WITH A 20 PERCENT CHANCE OF SHOWERS.
HIGHS IN THE MID 80S.
FRIDAY NIGHT THROUGH SUNDAY NIGHT
BREEZY. PARTLY CLOUDY WITH A
20 PERCENT CHANCE OF SHOWERS. LOWS IN THE UPPER 70S. HIGHS IN THE
MID 80S.
MONDAY
PARTLY CLOUDY WITH A 20 PERCENT CHANCE OF SHOWERS. HIGHS
IN THE MID 80S.
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