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  Storm Center: Weather Alerts: Warnings


 
My Location: San Francisco, CA 
 
Current Time: 11:57:28 AM PDT

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Weather Alert
    Other Weather Alerts
Type Hydrologic Outlook

River Statement

Issued By NWS Tiyan GU
Issuing Time Sun, 20 Jul 2025 21:57:00 PDT
Broadcast Time Sun, 20 Jul 2025 21:57:00 PDT
Valid Until Tue, 22 Jul 2025 01:30:00 PDT
Brief Description Hydrologic Outlook
Detailed Description ESFGUM This Hydrologic Outlook is for the Guam, Rota, Tinian and Saipan. A tropical disturbance, Joint Typhoon Warning Center's Invest 98W, is centered southeast of Guam near 9N154E. This invest is expected to move toward the Marianas through the week as it slowly develops. 98W is expected to bring heavy rainfall to the Marianas Thursday evening through Sunday. Models differ on location and strength of 98W as it moves through the Marianas, however, they do agree that heavy rainfall is likely as early as Thursday, continuing through the weekend. There is a potential for Guam and the CNMI to see rainfall amounts of 5 to 10 inches by Sunday, though locally heavier amounts are possible. This rainfall is expected to produce minor flooding across the islands, with flash flooding possible in areas of heavier rainfall, especially over southern Guam. Residents on the Marianas need to closely monitor this developing situation as watches, advisories and warnings could be issued later. If living near streams and rivers, prepare to move items away from stream and river banks. Make sure storm drains nearby are not clogged, especially if living in low-lying areas.
       
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Guam River Statement
Missouri River Statement
       
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