Sunday22ndJULY 2018, aM SHIFT.
The easterlies remains prevalent while remaining within the vicinity of the islands is a weak convergence zone as was drawn from the surface streamline. The convergence alone, is not active which of the absence of the available mechanism triggering its activeness. Sounding profile is dry with the atmosphere in stability form, whilst aloft, an upper-level ridge exist further north from Samoa. As seen on temperature based images of the atmosphere, a huge dry surge approaches the upper-atmosphere. Cooler temperature will persist towards tonight as winds tends more southeasterly.
Monday UNTIL Saturday:
A deep easterly flow may endure for the beginning of the week, brief showers and intermittent rain possible while unlikely to be heavy. A wind change to northeast from mid-week will see the increase in showery activities, particularly Tuesday and Wednesday. A potential for moderate to heavy falls on Tuesday with the passing of an upper level trough. Tradewind weather will dominate the weekend with few passing showers on the southern side of the mountain range. Warm and dry conditions may be experienced in the lee-ward side for Friday and Saturday.
Observations from the Aunu’u Buoy recorded waves and swells below advisory thresholds and will continue to remain so for the rest of the outlook period.