


Flood Potential Outlook
Issued by NWS Tiyan, Guam
Issued by NWS Tiyan, Guam
770 FGMY70 PGUM 230140 ESFGUM GUC010-MPC100-110-120-230300- Hydrologic Outlook National Weather Service Tiyan GU 1140 AM ChST Wed Jul 23 2025 ...FLOOD WATCH ISSUED FOR THE MARIANAS... The Hydrologic Outlook is being updated to inform of the issuance of the Flood Watch for Guam, Rota, Tinian and Saipan. Flood Watch information can be found on our page at weather.gov/gum $$ DS