For Mentawai Islands :
No gale warning.
The reliability of the situation is good.
Very cloudy in the morning, storms developing in the afternoon. Possibility of showers late in the morning, showers in the afternoon. In the evening, skies clearing but continuing risk of storms.
Possibility of showers N force 1 turning W force 2 in the middle of the day then SW force 1. Gusts reaching 9 knots in the middle of the day. Moderate sea. Moderate, long swell from SW. Visibility reduced by mist becoming good in the middle of the day then poor.