For Shag Rock :
No gale warning.
The reliability of the situation is very good.
Fair weather with mostly clear skies. In the evening, skies with few clouds.
NW force 3 in the morning turning S force 2 in the evening. Gusts reaching 16 knots in the middle of the day. Smooth to slight sea. Low, short swell from SW. Excellent visibility becoming good in the evening.