For Sumatra SE tips :
No gale warning.
The reliability of the situation is good.
Sun and storm clouds in the morning,storms developing in the afternoon. Showers all day. In the evening, very cloudy with risk of storms.
Light showers. W force 4 in the morning becoming force 3 in the evening. Gusts reaching 20 knots in the middle of the day. Slight sea. Low, fairly long swell from SSW. Excellent visibility becoming poor in the evening.