textproduct: WSO Pago Pago
This forecast discussion was created in the public domain by the National Weather Service. It can be found in its original form here.
Long term [Thursday through Monday]
The surface convergence will remain nearby throughout the long term forecast period. Continued moisture convergence along the trough will lead to deeper moisture and overall intensification of the trough for the long term forecast period. Models indicate a high likelihood of weak embedded low pressure areas developing along the convergence by mid to late week due to the intensification of the trough. This scenario would signifcantly increase flash flooding potential for the long term forecast period.
Marine
Despite light flow over the American Samoa islands and coastal waters, the aforementioned fresh breeze to the south has generated a strong southeasterly swell that is moving across American Samoa coastal waters. As a result of anticipated building seas, a Small Craft Advisory was issued this morning. The swell is expected to build seas 7 to 9 feet late tonight through Tuesday night with period times nearing 15 seconds. This will make strong surfs and currents likely for south and east facing shores by later tonight. A High Surf Advisory may later be needed as a result. Seas and surfs begin subsiding Wednesday as the swell weakens. However, heavy showers and thunderstorms embedded in the trough may still elevate seas at times.
PPG WATCHES/WARNINGS/ADVISORIES
Small Craft Advisory remains in effect.
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