textproduct: WSO Pago Pago

DISCUSSION

The threat of flash flooding and heavy showers has significantly decreased in the last 12 to 16 hours. Partly cloudy skies with minimal to no rainfall was observed throughout the day. These conditions are further supported by the stable atmospheric profile shown on the upper air observations (RAOB) from this afternoon (02/00Z). Additionally, the latest satellite imageries show the trough south of the area as gentle north winds remain across the territory. Model projections show a light to moderate east wind flow prevailing after tonight. With the east wind flow, embedded passing showers is expected.

By the end of the week, model data shows a low pressure system developing to the west-northwest of the Fiji Islands, migrating south-southeast. As this system migrates closer to the Fiji Islands and south of the territory, it will slightly turn winds northeast with embedded passing showers to remain. Model data projects no impacts to the territory from this system.

Therefore, expect isolated to scattered showers with light to moderate north winds for tonight turning east on Thursday through the end of the forecast period.

Marine

Data collected at the PacIOOS buoys show calm and serene conditions. Seas of 5 to 7 feet are projected to remain tonight through at least Friday. The Wave Watch III model data shows a large south swell reaching shorelines by Friday night through the end of the forecast period. This swell is expected to reach advisory thresholds as peak periods are projected to reach 20 seconds or longer. Seas of 7 to 9 feet are expected, and with the long periods, high surfs and strong rip currents will likely be a threat for this time frame. Thus, expect favorable conditions for tonight through Friday, becoming unfavorable for the rest of the period.

PPG WATCHES/WARNINGS/ADVISORIES

NONE