FPMY50 PGUM 141812 ZFPGUM Zone Forecast for Guam and the Northern Marianas National Weather Service Tiyan GU 412 AM ChST Wed Apr 15 2026 GUZ001-151015- Guam- 412 AM ChST Wed Apr 15 2026 ...TROPICAL STORM WARNING IN EFFECT... ...TYPHOON WATCH IN EFFECT... ...COASTAL FLOOD WARNING REMAINS IN EFFECT UNTIL 5 AM CHST THURSDAY ALONG SOUTH, WEST, NORTH FACING REEFS... ...HIGH SURF WARNING REMAINS IN EFFECT UNTIL 6 PM CHST THURSDAY ALONG SOUTH, WEST, AND NORTH FACING REEFS... ...FLOOD WATCH REMAINS IN EFFECT THROUGH TONIGHT... .TODAY...Tropical storm conditions expected. West winds 50 to 60 mph gusts to 75, decreasing to 40 to 50 mph this afternoon. Cloudy with numerous showers, becoming scattered this afternoon. Isolated thunderstorms. Highs around 84. Chance of showers 60 percent. .TONIGHT...Tropical storm conditions expected. Southwest winds 35 to 45 mph. Mostly cloudy with scattered showers and isolated thunderstorms. Lows around 79. Chance of showers 50 percent. .THURSDAY...Windy. Partly sunny with scattered showers and isolated thunderstorms. Southwest winds 25 to 35 mph. Highs around 85. Chance of showers 50 percent. .THURSDAY NIGHT...Breezy. Mostly cloudy with isolated showers. Southwest winds 20 to 25 mph. Lows around 78. Chance of showers 20 percent. .FRIDAY...Breezy. Partly sunny with a 20 percent chance of showers. West winds 20 to 25 mph. Highs around 86. .FRIDAY NIGHT THROUGH MONDAY...Breezy. Partly cloudy with a 20 percent chance of showers. Lows in the upper 70s. Highs in the upper 80s. .MONDAY NIGHT AND TUESDAY...Partly cloudy with a 10 percent chance of light showers. Lows in the upper 70s. Highs in the upper 80s. $$ MPZ001-151015- Rota- 412 AM ChST Wed Apr 15 2026 ...TYPHOON WARNING IN EFFECT... ...COASTAL FLOOD WARNING REMAINS IN EFFECT UNTIL 5 AM CHST THURSDAY ALONG SOUTH, WEST, AND NORTH FACING REEFS... ...HIGH SURF WARNING REMAINS IN EFFECT UNTIL 6 PM CHST THURSDAY ALONG SOUTH, WEST, AND NORTH FACING REEFS... ...FLOOD WATCH REMAINS IN EFFECT THROUGH TONIGHT... .TODAY...Tropical storm conditions expected. Southwest winds 50 to 60 mph with gusts to 75 mph, decreasing to 45 to 55 mph with gusts to 65 mph in the afternoon. Cloudy with numerous heavy showers and isolated thunderstorms. Highs around 84. Chance of showers 70 percent. .TONIGHT...Tropical storm conditions expected. Southwest winds 35 to 45 mph. Mostly cloudy with scattered showers and isolated thunderstorms. Lows around 79. Chance of showers 50 percent. .THURSDAY...Windy. Southwest winds 25 to 35 mph. Mostly cloudy with scattered showers and isolated thunderstorms. Highs around 84. Chance of showers 50 percent. .THURSDAY NIGHT...Windy. Mostly cloudy. Scattered showers and isolated thunderstorms in the evening, then isolated showers after midnight. Southwest winds 25 to 30 mph. Lows around 78. Chance of showers 50 percent. .FRIDAY...Breezy. Partly sunny with a 20 percent chance of showers. Southwest winds 20 to 25 mph. Highs around 85. .FRIDAY NIGHT...Breezy. Partly cloudy with a 20 percent chance of showers. Lows in the upper 70s. .SATURDAY THROUGH MONDAY...Breezy. Partly cloudy with a 20 percent chance of showers. Highs in the mid 80s. Lows in the upper 70s. .MONDAY NIGHT AND TUESDAY...Partly cloudy with a 20 percent chance of light showers. Lows in the upper 70s. Highs in the mid 80s. $$ MPZ002-003-151015- Tinian-Saipan- 412 AM ChST Wed Apr 15 2026 ...TYPHOON WARNING IN EFFECT... ...COASTAL FLOOD WARNING REMAINS IN EFFECT UNTIL 5 AM CHST THURSDAY ALONG NORTH, EAST, SOUTH AND WEST FACING REEFS... ...HIGH SURF WARNING REMAINS IN EFFECT UNTIL 6 PM CHST THURSDAY ALONG NORTH, EAST, SOUTH AND WEST FACING REEFS... ...FLOOD WATCH REMAINS IN EFFECT THROUGH TONIGHT... .TODAY...Typhoon conditions expected. South winds 125 to 145 mph with gusts to 170 mph decreasing to 95 to 115 mph around noon, then to 65 to 85 mph late afternoon. Cloudy. Heavy showers and scattered thunderstorms in the morning, then heavy showers and isolated thunderstorms in the afternoon. Highs around 83. Chance of showers 90 percent. .TONIGHT...Tropical storm conditions expected. Southwest winds 50 to 65 mph. Gusts up to 75 mph in the evening. Cloudy. Numerous heavy showers and isolated thunderstorms in the evening, then scattered showers and isolated thunderstorms after midnight. Lows around 79. Chance of showers 70 percent. .THURSDAY...Tropical storm conditions expected. Southwest winds 40 to 50 mph. Mostly cloudy with scattered showers and isolated thunderstorms. Highs around 84. Chance of showers 50 percent. .THURSDAY NIGHT...Windy. Southwest winds 30 to 35 mph. Mostly cloudy with scattered showers and isolated thunderstorms. Lows around 77. Chance of showers 50 percent. .FRIDAY...Windy. Partly sunny with a 20 percent chance of showers. Southwest winds 25 to 30 mph. Highs around 84. .FRIDAY NIGHT...Breezy. Mostly cloudy with a 20 percent chance of showers. Lows in the upper 70s. .SATURDAY THROUGH MONDAY...Breezy. Partly cloudy with a 20 percent chance of showers. Highs in the mid 80s. Lows in the upper 70s. .MONDAY NIGHT AND TUESDAY...Partly cloudy with a 10 percent chance of light showers. Lows in the upper 70s. Highs in the upper 80s. $$