524  
FPMY50 PGUM 220848  
ZFPGUM  
 
ZONE FORECAST FOR GUAM AND THE NORTHERN MARIANAS  
NATIONAL WEATHER SERVICE TIYAN GU  
648 PM CHST SAT AUG 22 2026  
 
GUZ001-MPZ001>003-222030-  
GUAM-ROTA-TINIAN-SAIPAN-  
648 PM CHST SAT AUG 22 2026  
 
...HIGH SURF ADVISORY IN EFFECT UNTIL 4 PM CHST SUNDAY ALONG WEST  
AND NORTH FACING REEFS...  
...HIGH RIP CURRENT RISK IN EFFECT THROUGH SUNDAY AFTERNOON ALONG  
WEST AND NORTH FACING REEFS...  
   
TONIGHT  
MOSTLY CLOUDY WITH SCATTERED LOCALLY HEAVY SHOWERS AND  
ISOLATED THUNDERSTORMS. SOUTHWEST WINDS 10 TO 15 MPH. LOWS AROUND  
78. CHANCE OF SHOWERS 40 PERCENT.    
SUNDAY  
PARTLY SUNNY WITH SCATTERED HEAVY SHOWERS AND ISOLATED  
THUNDERSTORMS. SOUTHWEST WINDS 15 TO 20 MPH. HIGHS AROUND 87. CHANCE  
OF SHOWERS 40 PERCENT.   
SUNDAY NIGHT  
MOSTLY CLOUDY WITH SCATTERED HEAVY SHOWERS AND  
ISOLATED THUNDERSTORMS. SOUTHWEST WINDS 10 TO 15 MPH. LOWS AROUND  
77. CHANCE OF SHOWERS 50 PERCENT.    
MONDAY THROUGH TUESDAY NIGHT  
MOSTLY CLOUDY WITH NUMEROUS HEAVY  
SHOWERS AND ISOLATED THUNDERSTORMS. SOUTHWEST WINDS 10 TO 20 MPH.  
HIGHS AROUND 86. LOWS AROUND 77. CHANCE OF SHOWERS 60 PERCENT.    
WEDNESDAY  
CLOUDY WITH SHOWERS LIKELY AND A SLIGHT CHANCE OF  
THUNDERSTORMS. HIGHS IN THE LOWER 80S. CHANCE OF SHOWERS 70 PERCENT.   
WEDNESDAY NIGHT  
MOSTLY CLOUDY WITH A 50 PERCENT CHANCE OF SHOWERS  
AND A SLIGHT CHANCE OF THUNDERSTORMS. LOWS IN THE UPPER 70S.    
THURSDAY  
BREEZY. MOSTLY CLOUDY WITH SHOWERS LIKELY AND A SLIGHT  
CHANCE OF THUNDERSTORMS. HIGHS IN THE MID 80S. CHANCE OF SHOWERS  
60 PERCENT.    
THURSDAY NIGHT  
BREEZY. CLOUDY WITH SHOWERS LIKELY AND A SLIGHT  
CHANCE OF THUNDERSTORMS. LOWS IN THE UPPER 70S. CHANCE OF SHOWERS  
70 PERCENT.    
FRIDAY THROUGH SATURDAY  
BREEZY. MOSTLY CLOUDY WITH A CHANCE OF  
SHOWERS AND A SLIGHT CHANCE OF THUNDERSTORMS. HIGHS IN THE MID 80S.  
LOWS IN THE UPPER 70S. CHANCE OF SHOWERS 50 PERCENT.  
 
 
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