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.
DISCUSSION
No major threat is expected for this forecast period except for passing showers from time to time and persistent warmer temperatures for the next couple of days. These conditions are likely associated with a mid-level high pressure system that models project to linger over the area for the whole forecast period. More daily high temperatures will likely peak at 90 degrees or more with dry conditions. Also, an easterly wind flow will prevail all through Tuesday night before winds turn northeast on Wednesday. Winds turning northeast is due to a low pressure system developing near the Fiji Islands and is expected to migrate southeast, passing south of the Samoa Islands as it pulls in moisture from the northeast, as it continues to intensify. There is no direct threat for American Samoa and its coastal waters expected from this storm. However, a slight change in the system's location and strength can mean American Samoa and its waters will have a direct impact from this sytem. These uncertainties are expected to be higher after 3 days. Thus, this event will be monitored as the week progresses and more data becomes available.
In the meantime, expect isolated to scattered showers with light to moderate easterlies to persist for tonight through at least Tuesday night.
Marine
Analysis of the latest ocean data shows no significant change from the previous model projections. Seas of 5 to 7 feet will remain for tonight and Friday before a large south swell reaches shorelines on Friday night. This south swell will be accompanied by periods peaking at 20 seconds long or more. The combination of these two features usually mean surfs will likely be enhanced and higher near shorelines, and stronger rip currents will be generated. These would be the main threats for this time frame. Model data continues to show seas subsiding to more favorable conditions on Sunday and remain through the rest of the forecast period. Thus, will continue to monitor conditions and issue alerts as more data becomes available.
PPG WATCHES/WARNINGS/ADVISORIES
NONE
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