SATURDAY 23RdJUNE 2018, PM.
Light North to Northeast wind-flow prevails over Samoa due to a ridge of high pressure system from far southeast. Few-Scattered low-level clouds was observed hourly throughout today which was also coincide well with latest satellite loops. Surface streamline analysis placed a weakening trough just west of the forecast zone with a ridge of high pressure system slowly building from far south west. Minimum showery activities predicted for the now-cast period, as a result of Stratocumulus ridging along the Northerly flow. No significant event forecast for tonight aside from brief showers as mentioned above.
Tradewinds will continue to maintain dry and stable weather conditions for the beginning of the new week. The tail end of a frontal system/trough will provide some instability by mid-week. Another strong high pressure system moving from Southwest will increase our winds strength and will continue the tradewind weather for the long term forecast.
Data from Aunu’u wave buoy shows wave heights ranging from 5-7 feet. Prediction from the Aunu’u wave buoy and COSSPAC (BOM) show swells to remain below the advisory threshold throughout the outlook period until Monday of the new week an increase in southerly swells will occur.