For Sumatra SE tips :
No gale warning.
The reliability of the situation is good.
Stormy day. Showers all day. In the evening, overcast skies with risk of thundery outbreaks.
Light showers. WNW wind force 4 continuing all day. Gusts reaching 24 knots in the middle of the day. Moderate sea. Low, fairly long swell from SW. Good visibility becoming good in the middle of the day then excellent.