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Hydrologic Outlook — Tutuila and Aunuu; Manua; Swains Island; Rose Atoll Severity: Unknown. Certainty: Possible. ESFPPG An active trough to the north is projected to drift southward and move over the territory by Thursday night. Widespread showers may be heavy and persistent at times with the possibility of thunderstorms. Landslides will also be possible along steep mountainous terrain. Impacts could begin as early as Thursday and are expected to persist through the weekend. While there is still uncertainty in the exact magnitude and duration of rainfall, plan now for wet conditions that could persist through at least Sunday. Keep up to date with the latest forecast information through our internet page (www.weather.gov/ppg), local media, social media, and our NOAA Radio broadcasts.
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