THURSDAY 19th APRIL 2018 PM.
TONIGHT & TOMORROW:
Currently at the surface, Samoa is affected by a moist Northerly wind-flow thus the issuance of the latest forecast. A short-wave trough riding along the ridge of high pressure is expected to affect our shores later tonight. Aloft, an upper-level ridge was analysed to the Southern parts of the islands, diverging winds concentrates on the Northern Fijian islands which is enhancing the growth of the surface circulation (TD 14F). Moisture is suspended in the atmosphere because of the activeness of the SPCZ, convections is concentrated to the Southwest of Samoa which marks the location of the SPCZ which is linked to the TD 14F which somehow will have no threat to our islands. Expect cloudy skies with isolated showers though may become moderate later tonight and for tomorrow, cloudiness from time to time with isolated showers in the afternoon towards the evening.
SATURDAY TILL THURSDAY:
Winds will tend Easterly on Saturday evening and so begins the arrival of the Trades. Showers will minimise as the high pressure to the South will direct cool Trades for our islands.
Wave height have reduced as of last observation hence the cancellation of the advisory earlier this afternoon. Wave watch model predicts wave heights and swells to remain below the advisory threshold.