FPMY50 PGUM 151134 ZFPGUM Zone Forecast for Guam and the Northern Marianas National Weather Service Tiyan GU 934 PM ChST Wed Apr 15 2026 GUZ001-152100- Guam- 934 PM ChST Wed Apr 15 2026 ...COASTAL FLOOD WARNING NOW IN EFFECT UNTIL 5 AM CHST THURSDAY ALONG SOUTH, WEST AND NORTH FACING SHORELINES... ...HIGH SURF WARNING NOW IN EFFECT UNTIL 5 PM CHST FRIDAY ALONG SOUTH, WEST AND NORTH FACING REEFS... ...TROPICAL STORM WARNING REMAINS IN EFFECT... ...TYPHOON WATCH REMAINS IN EFFECT... ...FLOOD WATCH REMAINS IN EFFECT THROUGH LATE TONIGHT... .TONIGHT...Tropical storm conditions expected. Southwest winds 35 to 45 mph with gusts to 55 mph, decreasing to 30 to 40 mph with gusts to 50 mph late tonight. Mostly cloudy with isolated showers. Lows around 79. Chance of showers 20 percent. .THURSDAY...Windy. Partly cloudy with isolated showers. Southwest winds 25 to 35 mph. Highs around 85. Chance of showers 20 percent. .THURSDAY NIGHT...Breezy. Partly cloudy with isolated showers. West winds 20 to 25 mph. Lows around 78. Chance of showers 20 percent. .FRIDAY AND FRIDAY NIGHT...Breezy. Partly cloudy with isolated showers. West winds 15 to 25 mph. Highs around 86. Lows around 79. Chance of showers 20 percent. .SATURDAY...Partly cloudy with a 20 percent chance of showers. West winds 10 to 15 mph. Highs around 87. .SATURDAY NIGHT AND SUNDAY...Partly cloudy with a 20 percent chance of showers. Lows in the upper 70s. Highs in the upper 80s. .SUNDAY NIGHT THROUGH WEDNESDAY...Partly cloudy with a 20 percent chance of showers. Lows in the upper 70s. Highs in the upper 80s. $$ MPZ001-152100- Rota- 934 PM ChST Wed Apr 15 2026 ...COASTAL FLOOD WARNING NOW IN EFFECT UNTIL 5 PM CHST THURSDAY ALONG SOUTH, WEST AND NORTH FACING SHORELINES... ...HIGH SURF WARNING IN EFFECT UNTIL 5 PM CHST FRIDAY ALONG SOUTH, WEST AND NORTH FACING REEFS... ...TYPHOON WARNING IN EFFECT... ...FLOOD WATCH REMAINS IN EFFECT THROUGH LATE TONIGHT... .TONIGHT...Tropical storm conditions expected. Southwest winds 40 to 50 mph. Mostly cloudy with scattered showers. Lows around 79. Chance of showers 30 percent. .THURSDAY...Tropical Storm conditions possible. Southwest winds 30 to 40 mph. Partly sunny with isolated showers and thunderstorms. Highs around 84. Chance of showers 20 percent. .THURSDAY NIGHT...Windy. Partly cloudy with isolated showers. Southwest winds 25 to 35 mph. Lows around 78. Chance of showers 20 percent. .FRIDAY...Windy. Partly cloudy with isolated showers. Southwest winds 25 to 30 mph. Highs around 85. Chance of showers 20 percent. .FRIDAY NIGHT...Breezy. Partly cloudy with isolated showers. West winds 15 to 20 mph. Lows around 79. Chance of showers 20 percent. .SATURDAY...Breezy. Partly cloudy with a 10 percent chance of showers. West winds 15 to 20 mph. Highs around 85. .SATURDAY NIGHT AND SUNDAY...Partly cloudy with a 20 percent chance of showers. Lows in the upper 70s. Highs in the mid 80s. .SUNDAY NIGHT...Partly cloudy with a 20 percent chance of light showers. Lows in the upper 70s. .MONDAY THROUGH WEDNESDAY...Partly cloudy with a 20 percent chance of showers. Highs in the mid 80s. Lows in the upper 70s. $$ MPZ002-003-152100- Tinian-Saipan- 934 PM ChST Wed Apr 15 2026 ...COASTAL FLOOD WARNING NOW IN EFFECT UNTIL NOON CHST FRIDAY ALONG SOUTH, WEST AND NORTH FACING SHORELINES... ...HIGH SURF WARNING NOW IN EFFECT UNTIL 5 PM CHST FRIDAY ALONG SOUTH, WEST AND NORTH FACING REEFS... ...TYPHOON WARNING REMAINS IN EFFECT... ...FLOOD WATCH REMAINS IN EFFECT THROUGH LATE TONIGHT... .TONIGHT...Typhoon conditions possible. Southwest winds 50 to 60 mph with gusts to 85 mph. Cloudy with widespread showers and isolated thunderstorms. Lows around 78. Chance of showers near 100 percent. .THURSDAY...Tropical storm conditions expected. Southwest winds 40 to 50 mph. Mostly cloudy with scattered showers. Highs around 84. Chance of showers 50 percent. .THURSDAY NIGHT...Tropical storm conditions possible. Southwest winds 30 to 40 mph. Mostly cloudy with scattered showers. Lows around 77. Chance of showers 40 percent. .FRIDAY...Windy. Partly sunny with scattered showers. Southwest winds 25 to 35 mph. Highs around 84. Chance of showers 30 percent. .FRIDAY NIGHT...Breezy. Partly cloudy with isolated showers. West winds 20 to 25 mph. Lows around 78. Chance of showers 20 percent. .SATURDAY...Breezy. Partly cloudy with a 20 percent chance of showers. West winds 15 to 20 mph. Highs around 85. .SATURDAY NIGHT THROUGH SUNDAY NIGHT...Partly cloudy with a 20 percent chance of showers. Lows in the upper 70s. Highs in the mid 80s. .MONDAY THROUGH TUESDAY...Partly cloudy with a 20 percent chance of light showers. Highs in the mid 80s. Lows in the upper 70s. .TUESDAY NIGHT...Mostly cloudy with a 20 percent chance of showers. Lows in the upper 70s. .WEDNESDAY...Mostly sunny with a 20 percent chance of showers. Highs in the upper 80s. $$