For Mentawai Islands :
No gale warning.
The reliability of the situation is good.
Stormy day. Showers will be frequent and heavy. In the evening, storms developing.
Showers. WNW force 2 becoming force 3 in the middle of the day then NW. Gusts reaching 15 knots in the middle of the day. Slight sea becoming moderate in the middle of the day. Low, fairly long swell from SSW then moderate, short swell from W in the evening. Poor visibility becoming good in the middle of the day then reduced by mist.