213  
WGMY60 PGUM 030730  
FFAGUM  
 
FLOOD WATCH  
NATIONAL WEATHER SERVICE TIYAN GU  
530 PM CHST SAT OCT 3 2026  
 
GUZ001-MPZ001>003-032015-  
/O.CON.PGUM.FA.A.0006.000000T0000Z-261004T1800Z/  
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/  
GUAM-ROTA-TINIAN-SAIPAN-  
530 PM CHST SAT OCT 3 2026  
   
..FLOOD WATCH REMAINS IN EFFECT THROUGH LATE SUNDAY NIGHT
 
 
* WHAT...FLASH FLOODING CAUSED BY EXCESSIVE RAINFALL CONTINUES TO BE  
POSSIBLE.  
 
* WHERE...GUAM, ROTA, SAIPAN AND TINIAN.  
 
* WHEN...THROUGH LATE SUNDAY NIGHT.  
 
* IMPACTS...EXCESSIVE RUNOFF MAY RESULT IN FLOODING OF RIVERS,  
CREEKS, STREAMS, AND OTHER LOW-LYING AND FLOOD-PRONE LOCATIONS.  
FLOODING MAY OCCUR IN POOR DRAINAGE AND URBAN AREAS.  
 
* ADDITIONAL DETAILS...  
- TYPHOON CHOI-WAN (26W) IS STEADILY MOVING NORTHEAST AND AWAY FROM  
THE MARIANAS. TO THE SOUTH OF CHOI-WAN, SURGING MONSOON INFLOW  
WILL MAINTAIN WET CONDITIONS THROUGH SUNDAY, RESULTING IN 3 TO 5  
INCHES OF RAIN FOR GUAM AND ROTA, AND 4 TO 6 INCHES FOR TINIAN  
AND SAIPAN DURING THE WATCH PERIOD.  
- HTTP://WWW.WEATHER.GOV/SAFETY/FLOOD  
 
PRECAUTIONARY/PREPAREDNESS ACTIONS...  
 
YOU SHOULD MONITOR LATER FORECASTS AND BE PREPARED TO TAKE ACTION  
SHOULD FLASH FLOOD WARNINGS BE ISSUED.  
 

 
 

 
 
TM  
 
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